Patent application number | Description | Published |
20100026993 | METHOD AND APPARATUS FOR MANUFACTURING DISPLAY DEVICE - Provided are a method and apparatus for manufacturing a display device, which can ensure precise alignment and attachment of a lenticular sheet onto a display panel. The method includes sequentially stacking a display panel and a lenticular sheet on a stage, irradiating light that is incident in parallel toward the display panel and the lenticular sheet from below the display panel, detecting the light that has passed through the display panel and the lenticular sheet, and determining an axial direction of a columnar lens formed on the lenticular sheet. | 02-04-2010 |
20110032438 | LIQUID CRYSTAL LENS PANEL, METHOD OF MANUFACTURING THE SAME AND DISPLAY DEVICE HAVING THE LIQUID CRYSTAL LENS PANEL - A liquid crystal lens panel includes a first substrate, a second substrate, a liquid crystal layer and a light-blocking member. The first substrate includes a plurality of individual electrodes. The individual electrode receives a voltage to have a light path length distribution of a Fresnel lens shape. The second substrate includes a common electrode opposition the individual electrodes. The liquid crystal layer is disposed between the first and second substrates. The light-blocking member is disposed on an area in correspondence with the individual electrode in which a voltage discontinuously varied is applied thereto. Thus, a liquid crystal lens panel of a Fresnel lens type is realized to decrease a liquid crystal cell gap, so that a process efficiency of the liquid crystal lens panel may be enhanced and a manufacturing cost of the liquid crystal lens panel may be reduced. | 02-10-2011 |
20110037838 | METHOD FOR DISPLAYING A STEREOSCOPIC IMAGE AND STEREOSCOPIC IMAGE DISPLAY DEVICE FOR PERFORMING THE METHOD - A stereoscopic image display device includes a display panel, a temporal division plate and a lenticular lens. The display panel includes a gate line, a data line, and a unit pixel of a horizontal pixel structure in which a long side is parallel with the first direction and a short side is parallel with the second direction. The display panel displays a 2D image based on an image control signal. The temporal division plate includes a plurality of shutters disposed on the display panel extending in the second direction. The temporal division plate opens and closes m shutters corresponding to each unit pixel, in a sequence, ‘m’ being a natural number no less than 2). The lenticular lens is disposed on the temporal division plate to convert the 2D image passing the temporal division plate into a 3D image. | 02-17-2011 |
20110038044 | LENS ARRAY AND 3-DIMENSIONAL DISPLAY APPARATUS INCLUDING THE SAME - A lens array according to an exemplary embodiment of the present invention includes: a first upper lattice plate including a plurality of first upper lattices; a first lower lattice plate including a plurality of first lower lattices; a first membrane disposed between the first upper lattice plate and the first lower lattice plate; a transparent liquid filled in the first lower lattice plate; and a hydraulic pressure controller positioned in the first lower lattice plate, wherein the first upper lattice and the first lower lattice are engaged with each other, thereby forming a plurality of first regions. | 02-17-2011 |
20110102560 | METHOD OF DISPLAYING STEREOSCOPIC IMAGE AND STEREOSCOPIC IMAGE DISPLAY DEVICE FOR PERFORMING THE SAME - A stereoscopic image display device includes a display panel and an optical lens assembly. The display panel includes a plurality of pixels. The display panel temporally divides M view images corresponding to M viewing spaces to display the temporally divided image on a display panel. ‘M’ is a natural number of no less than two. The optical lens assembly converts the view image displayed on the display panel into N stereoscopic images in which directions of the view images are different from each other to emit the converted view image toward a viewing space corresponding to the view image displayed on the display panel. ‘N’ is a natural number no less than two. | 05-05-2011 |
20110109964 | LIQUID ELASTIC MEMBRANE PRISM AND 3 DIMENSION DISPLAY DEVICE HAVING THE SAME - A stereoscopic display is provided. The stereoscopic display is able to control a viewing position and make a viewing angel wide. On top of a display panel, an image is provided through a plurality of pixels and is separated to a left-eye image and a right-eye image by a lenticular lens. An elastic membrane prism array controls an angle of emitted light. An elastic membrane prism array is disposed on the lenticular lens or on and under the lenticular lens. The elastic membrane prism array includes a prism body having a first chamber and a second chamber, a wall disposed between the first and second chamber, a prism plate connected to the wall, a piston adapted for moving back-and-forth and a transporting tube disposed between the piston and the prism body. | 05-12-2011 |
20110164318 | DISPLAY DEVICE AND LENTICULAR SHEET OF THE DISPLAY DEVICE - A display device includes a display panel on which a plurality of pixels are arranged in a matrix in a first direction and in a second direction intersecting the first direction, and a lenticular sheet which is disposed above the display panel and includes a plurality of polygonal prism lenses that are arranged in the second direction. Each of the polygonal prism lenses extends in a third direction intersecting the second direction, and includes a plurality of flat surfaces or curved surfaces. | 07-07-2011 |
20110175857 | METHOD FOR DISPLAYING STEREO-SCOPIC IMAGE AND DISPLAY APPARATUS FOR PERFORMING THE SAME - A method for displaying a stereoscopic image of a display apparatus, the display apparatus can divide a received frame image corresponding to the preset column areas to generate M sub-frame images. In this example, the display apparatus may include a plurality of lenticular lenses disposed over a display panel to divide the display panel into a plurality of column areas. Each of the lenticular lenses may include a lenticular plate converting a flat image displayed on each of the column area into K stereoscopic images having directions different from each other. The M sub-frame images may be displayed on the display panel in a time division method. M shutters disposed over the M lenticular lenses according to the sub-frame image displayed on the display panel may selectively be opened and closed. Herein, K and M are natural numbers. | 07-21-2011 |
20110216169 | DISPLAY APPARATUS - A display apparatus includes a display panel and an optical member. The display panel includes a plurality of a pixel and displays a 2D image. The optical member includes a plurality of a lens, each having a plurality of a focal point and configured such that at least two pixels of the display panel correspond to one 3D pixel. The optical member divides the 2D image into left and right-eye images by using the lenses of the optical member. | 09-08-2011 |
20110228181 | IMAGE DISPLAY DEVICE USING DIFFRACTIVE LENS - The present invention relates to an image display device using a diffractive lens. An image display device according to an exemplary embodiment of the present invention includes a display panel displaying an image, and a diffractive lens for the image of the display panel to be recognized as a two-dimensional (2D) image or a three-dimensional (3D) image, wherein the diffractive lens modifies a path of light by using an optical principle of a Fresnel zone plate. | 09-22-2011 |
20120013602 | STEREOSCOPIC IMAGE DISPLAY - A stereoscopic image display includes; a display panel including a pixel including; a first subpixel, and a second subpixel disposed adjacent to the first subpixel, wherein the first subpixel and the second subpixel are adjacent along a subpixel border line which is a virtual line disposed at an interface between the first subpixel and the second subpixel, and a lenticular lens disposed on the display panel, the lenticular lens having a lens axis, in which the lens axis and a subpixel border line may intersect each other, or a portion of the subpixel border line may be substantially parallel with the lens axis. | 01-19-2012 |
20120062559 | Method for Converting Two-Dimensional Image Into Stereo-Scopic Image, Method for Displaying Stereo-Scopic Image and Stereo-Scopic Image Display Apparatus for Performing the Method for Displaying Stereo-Scopic Image - In a method for displaying a stereo-scopic image a border for each of multi-viewpoint images is formed around an edge of a display region, and each bordered multi-viewpoint image is converted into a synthetic image. The synthetic image is displayed as a stereo-scopic image in the display region through a lenticular lens inclined by a predetermined angle with respect to a display panel. Therefore, a two-dimensional image may be effectively converted into the stereo-scopic image decreasing saw-edged shapes at the border of the stereo-scopic image, improving display quality. | 03-15-2012 |
20120075434 | Three dimensional image display - A liquid crystal lens unit is provided for use in an autostereoscopic 3D image display. Light passing through the liquid crstyal lens unit is refracted by a liquid crystal layer arranged by an electric field. The voltage levels applied to the to the liquid crystal layer are periodically changed thereby periodically oscillating the position of the focus profile of the liquid crystal lens unit. As a result, moiré patterns are removed and display quality is improved. | 03-29-2012 |
20120105750 | IMAGE DISPLAY DEVICE USING DIFFRACTIVE DEVICE - An image display device includes a display panel displaying an image and a diffractive device. The diffractive device operates in a 2D mode to enable perception of a 2D image from the image of the display panel and in a 3D mode to enable perception of the image of the display panel as a 3D image. The diffractive device includes a plurality of unit devices. When the diffractive device operates in 3D mode, at least one of the plurality of unit devices operates in a lens mode and a barrier mode during different periods. | 05-03-2012 |
20120162550 | IMAGE DISPLAY DEVICE USING DIFFRACTIVE ELEMENT - An image display device includes a display panel displaying an image, and a diffractive element formed to operate in a 2D mode or a 3D mode so that the image of the display panel is perceived as a 2D image or a 3D image after passing through the diffractive element. In the image display device, the diffractive element includes a first substrate and a second substrate facing each other, a first electrode layer formed on the first substrate that includes a plurality of zones, a second electrode layer formed on the second substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. Further, when the diffractive element operates in the 3D mode, a common voltage is applied to the second electrode layer, and polarity of voltages applied to the first electrode layer with respect to the common voltage is inverted every zone. | 06-28-2012 |
20120206666 | DISPLAY DEVICE USING SWITCHING PANEL AND METHOD FOR MANUFACTURING SWITCHING PANEL - An image display device includes a display panel which displays an image, and a switching panel which operates in a 2-dimensional (“2D”) mode or in a 3-dimensional (“3D”) mode, where the switching panel controls the image of the display panel to be recognized as a 2D image in the 2D mode and as a 3D image in the 3D mode, where the switching panel includes: a first and second substrates opposite to each other; a first electrode layer on the first substrate; a first alignment layer on the first electrode layer; a second electrode layer on the second substrate; and a liquid crystal layer between the first substrate and the second substrate, where the switching panel includes a unit elements, and when no voltage is applied between the first electrode layer and the second electrode layer, a pretilt angle of the liquid crystal layer is repeated in the unit elements. | 08-16-2012 |
20120300042 | LENS MODULE AND DISPLAY APPARATUS HAVING THE SAME - A lens module includes a lens panel and a lens driving part. The lens panel includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes first electrodes and second electrodes alternately disposed thereon that partially overlap each other and are electrically insulated from each other. The second substrate is opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The lens driving part provides a substantially equal voltage to both ends of each of the first and second electrodes. | 11-29-2012 |
20130107174 | TWO-DIMENSIONAL/THREE-DIMENSIONAL SWITCHABLE DISPLAY APPARATUS | 05-02-2013 |
20130120366 | DISPLAY PANEL WITH 3D CAPABILITY AND DISPLAY APPARATUS HAVING THE SAME - A display apparatus having a display panel and a lenticular plate is configured for displaying 3D images. The display panel includes a plurality of light output-controlling portions and a light blocking portion surrounding them. The light output-controlling portions each has a non-rectangular shape, for example a parallelogram shape. A width of the light blocking portion between adjacent light output-controlling portions is determined according to a repetition period of the light output-controlling portions and according to an inclination angle of the lenticular plate. The configuration prevents or suppresses perception of a Moiré artifact pattern. | 05-16-2013 |
20130135545 | TWO-DIMENSIONAL/THREE-DIMENSIONAL SWITCHABLE DISPLAY APPARATUS - A two-dimensional/three-dimensional switchable display apparatus includes: a display panel; a first substrate disposed on the display panel; a first electrode layer disposed on the first substrate and including a plurality of first electrodes; a second substrate disposed on the first substrate; a second electrode layer disposed on the second substrate and including a plurality of second electrodes; and a liquid crystal layer disposed between the first and second substrates. A plurality of lens units are formed in association with a first position of the liquid crystal layer when a lens forming voltage profile is applied to the first electrodes and a common voltage is applied to the second electrodes. When the common voltage is applied to the first electrodes and the lens forming voltage is applied to the second electrodes, the plurality of lens units are formed in association with a second position spaced apart from the first position. | 05-30-2013 |
20130176520 | DISPLAY DEVICE - A display includes a display panel including a plurality of pixels, a polarizer disposed on a first side of the display panel, a phase retardation film disposed on the polarizer and glasses comprising a first eye glass portion and a second eye glass portion, wherein at least one of the plurality of pixels includes a first sub-pixel and a second sub-pixel, and the phase retardation film includes a first phase retardation portion corresponding to the first sub-pixel and a second phase retardation portion corresponding to the second sub-pixel. | 07-11-2013 |
20130229449 | THREE-DIMENSIONAL DISPLAY DEVICE - A three-dimensional display device comprises a flat display panel and an image-converting sheet disposed on or above the display panel. The display panel comprises a matrix of unit display cells arranged as rows and columns and where the cells are spaced apart to have respective row and column direction pitches. The image-converting sheet comprises a plurality of inclined lenticular lenses where the inclination is set according to the row and column direction pitches so as to reduce perception of Moiré patterns when stereo-scopic images are projected through the image-converting sheet to an observer viewing the display panel as an upright panel having respectively different left and right stereo-scopic image projections. | 09-05-2013 |
20140118412 | DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - A display apparatus includes: a pixel part including a plurality of pixels arranged substantially in a matrix form, where the matrix form includes a unit matrix having X columns in a horizontal direction and Y rows in a vertical direction, where X and Y are natural numbers; and a plurality of light controlling parts inclined with respect to the vertical direction of the pixels on the pixel part at an inclined angle of θ, where the inclined angle of θ satisfies the following equation: θ=tan | 05-01-2014 |
20140160378 | DISPLAY APPARATUS - A display apparatus includes a display panel configured to selectively display a two-dimensional image and a three-dimensional image, a light-source unit providing the display panel with light, and a liquid crystal (“LC”) barrier panel disposed between the display panel and the light-source unit and including a unit barrier part. The unit barrier part includes a plurality of barrier electrodes driven to form a barrier blocking the light and an opening transmitting the light. An LC lens panel is disposed between the LC barrier panel and the display panel and includes a unit lens part, the unit lens part including a plurality of lens electrodes which is driven as a unit lens. | 06-12-2014 |
20140267961 | IMAGE DISPLAY DEVICE USING DIFFRACTIVE LENS - The present invention relates to an image display device using a diffractive lens. An image display device according to an exemplary embodiment of the present invention includes a display panel displaying an image, and a diffractive lens for the image of the display panel to be recognized as a two-dimensional (2D) image or a three-dimensional (3D) image, wherein the diffractive lens modifies a path of light by using an optical principle of a Fresnel zone plate. | 09-18-2014 |
20140300961 | STEREOSCOPIC IMAGE DISPLAY DEVICE - A stereoscopic image display device, including a display unit comprising a plurality of pixel units, wherein at least one of the pixel units has a short side extended in a first direction and a long side extended in a second direction different from the first direction, and an image conversion unit comprising a lenticular lens overlapped with at least two of the pixel units arranged in the first direction, wherein the lenticular lens is extended in the second direction and a first prism corresponding to the lenticular lens is arranged in the second direction. | 10-09-2014 |
20150077667 | THREE-DIMENSIONAL IMAGE DISPLAY DEVICE - A three-dimensional display panel includes an array of pixels arranged in row and column directions, and at least one lenticular lens configured to form N viewpoints in different directions. The at least one lenticular lens has a longitudinal axis inclined by an angle of θ with respect to a column direction of the pixel, and a pitch P of the at least one lenticular lens in the row direction thereof satisfies | 03-19-2015 |
20150256821 | TWO-DIMENSIONAL/THREE-DIMENSIONAL SWITCHABLE DISPLAY APPARATUS - A two-dimensional/three-dimensional switchable display apparatus includes: a display panel; a first substrate disposed on the display panel; a first electrode layer disposed on the first substrate and including a plurality of first electrodes; a second substrate disposed on the first substrate; a second electrode layer disposed on the second substrate and including a plurality of second electrodes; and a liquid crystal layer disposed between the first and second substrates. A plurality of lens units are formed in association with a first position of the liquid crystal layer when a lens forming voltage profile is applied to the first electrodes and a common voltage is applied to the second electrodes. When the common voltage is applied to the first electrodes and the lens forming voltage is applied to the second electrodes, the plurality of lens units are formed in association with a second position spaced apart from the first position. | 09-10-2015 |
20150261001 | IMAGE DISPLAY DEVICE USING DIFFRACTIVE LENS - The present invention relates to an image display device using a diffractive lens. An image display device according to an exemplary embodiment of the present invention includes a display panel displaying an image, and a diffractive lens for the image of the display panel to be recognized as a two-dimensional (2D) image or a three-dimensional (3D) image, wherein the diffractive lens modifies a path of light by using an optical principle of a Fresnel zone plate. | 09-17-2015 |
20160028410 | DELAY CELL, DELAY LOCKED LOOK CIRCUIT, AND PHASE LOCKED LOOP CIRCUIT - A delay cell includes a first transistor and a second transistor, at least one of which has a fully depleted silicon-on-insulator (FD-SOI) structure. A first control voltage is applied to the body of the first transistor and a second control voltage is applied to the body of the second transistors in order to adjust the delay time of the delay cell. DLL and PLL circuits includes this type of delay cell. | 01-28-2016 |
Patent application number | Description | Published |
20110045877 | POP-UP APPARATUS FOR PORTABLE COMMUNICATION DEVICE - A pop-up apparatus for a portable communication device for insertion or ejection of parts of the portable communication device is provided. The pop-up apparatus preferably includes a body housing, a pop-up housing embedded in the body housing and inserted into or ejected from the body housing. The insertion or ejection can be performed by applying pressure to button on a surface thereof in a direction that it is pressed, and at least one or more pop-up hinge portions are provided between the body housing and the pop-up housing to insert the pop-up housing into or eject the pop-up housing from the body housing by pressing of the pop-up housing. | 02-24-2011 |
20110050683 | THREE-DIMENSIONAL DISPLAY DEVICE - A three-dimensional display device comprises a flat display panel and an image-converting sheet disposed on or above the display panel. The display panel comprises a matrix of unit display cells arranged as rows and columns and where the cells are spaced apart to have respective row and column direction pitches. The image-converting sheet comprises a plurality of inclined lenticular lenses where the inclination is set according to the row and column direction pitches so as to reduce perception of Moiré patterns when stereo-scopic images are projected through the image-converting sheet to an observer viewing the display panel as an upright panel having respectively different left and right stereo-scopic image projections. | 03-03-2011 |
20110063533 | METHOD OF DISPLAYING STEREOSCOPIC IMAGES MIXED WITH MONOSCOPIC IMAGES AND MONO/STEREOSCOPIC IMAGE DISPLAY APPARATUS CAPABLE OF PERFORMING THE METHOD - An image display apparatus is provided that can display one or both of 2D imagery and 3D imagery in respective but randomly selectable display areas of the apparatus. The apparatus a display panel, a driving circuit part, a polarization switch panel and a lens. The driving circuit part processes received frame image data representing two-dimensional (2D) imagery and three-dimensional (3D) imagery to thus provide the display panel with the processed frame image. The polarization switch panel is disposed above the display panel. The polarization switch panel is switched into a first polarization mode in correspondence with 2D imagery being displayed by the display panel and it is switched into a second polarization mode in correspondence with 3D imagery being displayed by the display panel. The lens is reacts differently to light rays having the effect of the first polarization mode imparted to them and to light rays having the effect of the second polarization mode imparted to them. More specifically, the lens strongly refracts light rays that are imparted with the second polarization mode (3D imagery light) and weakly or not at all refracts light rays that are imparted with the first polarization mode (2D imagery light). Thus, both the 2D image and the 3D image may be displayed on one screen. | 03-17-2011 |
20140085719 | DIPSLAY PANEL AND DISPLAY APPARATUS HAVING THE SAME - A display panel includes a transmit-control portion and a light blocking portion. The pixel-transmit portion may include a pair of first sides and a pair of second sides and transmitting light, the pair of the first sides being inclined with respect to a horizontal-axis direction and substantially parallel with each other, the pair of the second sides being inclined with respect to a vertical-axis direction and substantially parallel with each other. The blocking portion may surround the pixel-transmit portion and block the light. | 03-27-2014 |
20140328083 | LIGHT EMITTING DEVICE PACKAGE AND BACKLIGHT UNIT COMPRISING THE SAME - Disclosed is a light emitting element package having excellent heat radiation performance and high luminance, and a backlight unit including the same. The light emitting element package includes a package including a lead frame, a light emitting element provided on the lead frame, and a molded material combined with the lead frame and having an opening for emitting light generated by the light emitting element, and a reflection structure having an opening corresponding to the opening of the molded material, and contacting the molded material. | 11-06-2014 |
20140332310 | WATERPROOF SOUND TRANSMITTING SHEET, AND METHOD FOR PRODUCING SAME - Disclosed herein is a waterproof sound-transmitting sheet, the thickness of which can easily be adjusted and which has a high sound transmitting efficiency and excellent waterproofness, and a method for producing same. The waterproof sound-transmitting sheet, which is attached to a sound hole of a case, includes: a support layer made of a film-shaped porous material and formed in the case; and a waterproofing layer formed on one side of the support layer in the shape of a porous nanoweb in which fine fiber strands are crosswisely layered and exposed to the outside of the case. | 11-13-2014 |
20150014088 | Waterproof Sound Transmitting Sheet, and Method for Producing Same - Disclosed herein is a waterproof sound-transmitting sheet having high sound transfer efficiency and excellent water proofing performance and a method for producing same. The waterproof sound-transmitting sheet includes: a sound-transmitting layer made of a polymer material and formed in the shape of a web having a plurality of pores; and a coating layer formed on at least one side of the sound-transmitting layer to block pores existing on the surface of the sound-transmitting layer. | 01-15-2015 |
20150030797 | ADHESIVE TAPE AND METHOD OF MANUFACTURING THE SAME - Provided is an adhesive tape including: a substrate; and an adhesive layer laminated on one surface or both surfaces of the substrate, wherein one or both of the substrate and the adhesive layer are produced in a nano-web form in which fiber strands are captured by a spinning method. Thus, the adhesive tape can be made thin, and an adhesive strength can be improved. In addition, the adhesive tape can be precisely attached on a corrugated surface. When the adhesive tape attached between components is separated from the components, the adhesive layers can be prevented from remaining on the surfaces of the components. | 01-29-2015 |
20150030828 | MATTE FILM AND METHOD OF MANUFACTURING THE SAME - Provided is matte film including: a film layer that is formed in a nano-web shape by electrospinning a polymer material; an ink layer that is coated on one surface of the film layer: and an adhesive layer that is laminated on the other surface of the film layer through electrospinning. Since the film layer is formed in a nano-web shape so that fiber strands are accumulated, the matte film can be thinly produced and have a non-glossy function of performing scattered reflection of light and a fingerprint-preventive function of making fingerprints imprinted. Further. the surface strength of the matte film can be reinforced. | 01-29-2015 |
20160057833 | METHOD FOR MANUFACTURING LIGHT-EMITTING DEVICE PACKAGES, LIGHT-EMITTING DEVICE PACKAGE STRIP, AND LIGHT-EMITTING DEVICE PACKAGE - Disclosed is a method for manufacturing a chip scale package (CSP) for a light-emitting diode (LED). The method may include a light-emitting device mounting step for mounting a plurality of light-emitting devices on a substrate strip, a phosphor forming step for forming a phosphor on the plurality of light-emitting devices, a reflective member forming step for forming a reflective member on the substrate strip to surround the phosphor, and a package singulation step for singulating unit packages by cutting the substrate strip and the reflective member. | 02-25-2016 |
Patent application number | Description | Published |
20100261578 | Friction Element Load Sensing in an Automatic Transmission - A load sensor assembly for measuring an amount of torque transmitted through a torque establishing element includes a core mounted on a transmission housing and a load sensor mounted on the core. The load sensor is positioned against a portion of the torque establishing element whereby a portion of the amount of torque transmitted through the torque establishing element travels through the load sensor and is measured. A cable is connected to the load sensor for transmitting a signal representative of the amount of torque to a transmission controller. | 10-14-2010 |
20100262344 | Closed-Loop Torque Phase Control for Shifting Automatic Transmission Gear Ratios Based on Friction Element Load Sensing - A closed loop shift control apparatus and method based on friction element load controls a torque transfer phase when shifting from a low gear configuration to a high gear configuration for an automatic transmission system. When pressure actuated friction elements are selectively engaged and released to establish torque flow paths in the transmission, measurements or estimates of torsional load exerted on the off-going friction element are used to predict the optimal off-going friction element release timing for achieving a consistent shift feel. The ideal timing to release the off-going friction element is uniquely defined when torque load exerted onto the off-going friction element becomes substantially zero. An on-coming clutch engagement process is controlled by a closed loop control based on measurements or estimates of on-coming clutch torque capacity for a constant shift feel under dynamically changing conditions. | 10-14-2010 |
20110039657 | METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL - Systems and methods are provided for controlling a vehicle system including an engine that is selectively shut-down during engine idle-stop conditions, the system further including a hydraulic circuit comprising a hydraulically actuated transmission component, an accumulator, and an auxiliary transmission fluid pump. One example method comprises, during a first idle-stop engine shut-down condition, where the accumulator pressure is above a threshold, delivering pressurized transmission fluid to the hydraulic circuit from the accumulator, while disabling the auxiliary pump. The method further comprises, during a second idle-stop engine shut-down condition, where the accumulator pressure is below the threshold, operating the auxiliary pump and delivering at least some pressurized transmission fluid to the hydraulic circuit from the operating pump without travelling through the accumulator. | 02-17-2011 |
20110130245 | METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL - Methods and systems are provided for controlling a vehicle system including a selectively shut-down engine, a torque converter and a torque converter lock-up clutch. One example method comprises, during an idle-stop engine shut-down, restricting flow of transmission fluid out of the torque converter, and adjusting engagement of the torque converter lock-up clutch to adjust a drag torque on the engine to stop the engine. | 06-02-2011 |
20110135498 | METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL - Methods and systems are provided for pressurizing a transmission hydraulic circuit including a transmission mechanical pump coupled to an engine though a gearbox. One example method comprises, during an engine start, adjusting a speed ratio between the transmission pump and the engine between a first speed ratio and a second speed ratio, the pump rotating faster relative to the engine at the first speed ratio as compared with the second speed ratio. | 06-09-2011 |
20110136620 | METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL - Methods and systems are provided for controlling a vehicle engine coupled to a stepped-gear-ratio transmission. One example method comprises, in response to a first vehicle moving condition, shutting down the engine and at least partially disengaging the transmission while the vehicle is moving; and during a subsequent restart, while the vehicle is moving, starting the engine using starter motor assistance and adjusting a degree of engagement of a transmission clutch to adjust a torque transmitted to a wheel of the vehicle. | 06-09-2011 |
20110136621 | METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL - Methods and systems are provided for reducing driveline unwinding during successive engine shutdown and restart operations. In one example, during an engine shutdown, torsion is maintained in a transmission gear-train until an engine restart is requested by engaging one or more transmission clutches while applying wheel brakes. | 06-09-2011 |
20120010044 | METHOD FOR CONTROLLING AN ENGINE THAT MAY BE AUTOMATICALLY STOPPED - A method for improving starting of an engine that may be repeatedly stopped and started is presented. In one embodiment, the method adjusts a transmission tie-up force in response to engine starting. The method may improve vehicle launch for stop/start vehicles. | 01-12-2012 |
20120130608 | Synchronous Automatic Transmission Up-Shift Control Utilizing Input Torque Signal - A synchronous automatic transmission up-shift control utilizes input torque measurements. The input torque is measured during an up-shift having preparatory, torque, and inertia phases. Target input torque profiles for the torque and inertia phases are determined based on the input torque during the preparatory phase. During the torque phase, an engine torque is controlled to cause the input torque to achieve the target profile for the torque phase. During the inertia phase, an on-coming clutch is controlled to cause the input torque to achieve the target profile for the inertia phase. | 05-24-2012 |
20120130610 | Non-Synchronous Automatic Transmission Up-Shift Control Utilzing Input Torque Signal - A non-synchronous automatic transmission up-shift control utilizes input torque measurements. The input torque is measured during an up-shift having preparatory, torque, and inertia phases. Target input torque profiles for the torque and inertia phases are determined based on the input torque during the preparatory phase. During the torque phase, an engine torque is controlled to cause the input torque to achieve the target profile for the torque phase. During the inertia phase, the on-coming clutch is controlled to cause the input torque to achieve the target profile for the inertia phase. | 05-24-2012 |
20120238405 | METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL - Methods and systems are provided for controlling a vehicle engine coupled to a stepped-gear-ratio transmission. One example method comprises, in response to a first vehicle moving condition, shutting down the engine and at least partially disengaging the transmission while the vehicle is moving; and during a subsequent restart, while the vehicle is moving, starting the engine using starter motor assistance and adjusting a degree of engagement of a transmission clutch to adjust a torque transmitted to a wheel of the vehicle. | 09-20-2012 |
20120264567 | METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL - Methods and systems are provided for pressurizing a transmission hydraulic circuit including a transmission mechanical pump coupled to an engine though a gearbox. One example method comprises, during an engine start, adjusting a speed ratio between the transmission pump and the engine between a first speed ratio and a second speed ratio, the pump rotating faster relative to the engine at the first speed ratio as compared with the second speed ratio. In this way, the pump may be driven at different speed ratios relative to the engine to provide better pressurization in the transmission. | 10-18-2012 |
20120316738 | Clutch Torque Trajectory Correction to Provide Torque Hole Filling During a Ratio Upshift - A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated friction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a torque source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a torque source is modulated. A perceptible transmission output torque reduction during an upshift is avoided. Measured torque values are used during a torque phase of the upshift to correct an estimated oncoming friction element target torque so that transient torque disturbances at an oncoming clutch are avoided and torque transients at the output shaft are reduced. | 12-13-2012 |
20130085035 | METHOD FOR CONTROLLING AN ENGINE THAT MAY BE AUTOMATICALLY STOPPED - A method for improving starting of an engine that may be repeatedly stopped and started is presented. In one embodiment, the method adjusts a transmission tie-up force in response to engine starting. The method may improve vehicle launch for stop/start vehicles. | 04-04-2013 |
20130116088 | METHOD FOR STARTING AN ENGINE - A method for improving starting of an engine that may be repeatedly stopped and started is presented. In one example, the method adjusts a desired engine speed to at least two levels during engine speed run-up from cranking to engine idle speed. The method may improve vehicle launch for stop/start vehicles. | 05-09-2013 |
20130116090 | Friction Element Load Sensing in an Automatic Transmission - A load sensor assembly for measuring an amount of torque transmitted through a torque establishing element includes a core mounted on a transmission housing and a load sensor mounted on the core. The load sensor is positioned against a portion of the torque establishing element whereby a portion of the amount of torque transmitted through the torque establishing element travels through the load sensor and is measured. A cable is connected to the load sensor for transmitting a signal representative of the amount of torque to a transmission controller. | 05-09-2013 |
20130153353 | CLUTCH TORQUE TRAJECTORY CORRECTION TO PROVIDE TORQUE HOLE FILLING DURING A RATIO UPSHIFT - A multiple ratio transmission having an input shaft, an output shaft and oncoming clutch and off-going clutch for effecting ratio upshifts is provided. The transmission also includes a transmission controller configured for controlling shifts. During the torque phase of a ratio upshift, the controller increases input torque. Next, the controller estimates an oncoming clutch target torque. The controller controls a torque input to ensure the off-going clutch remains locked. The controller measures an actual transmission value for a torque transmitting element of the transmission and corrects the oncoming clutch target torque using the actual transmission value whereby an increasing torque for the oncoming friction element is achieved with minimal torque transients along the output shaft during the upshift. | 06-20-2013 |
20130296118 | METHODS AND SYSTEMS FOR A VEHICLE DRIVELINE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline operating modes may be manually selected to improve hybrid driveline operation during off road conditions. The approaches may improve vehicle drivability and reduce driveline degradation. | 11-07-2013 |
20130296119 | METHODS AND SYSTEMS FOR CONDITIONALLY ENTERING A DRIVELINE SAILING MODE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a driveline may selectively enter a sailing mode to provide quick driveline torque response with reduced impact on fuel economy. | 11-07-2013 |
20130296120 | METHODS AND SYSTEMS FOR DRIVELINE SAILING MODE ENTRY - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, entry conditions for entering a driveline sailing mode are described. Driveline sailing mode may improve driveline torque response and vehicle drivability. | 11-07-2013 |
20130296124 | METHODS AND SYSTEMS FOR A DRIVELINE DUAL MASS FLYWHEEL - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, compensation is provided for a dual mass flywheel positioned in a vehicle driveline. The approaches may reduce driveline torque disturbances. | 11-07-2013 |
20130296125 | METHODS AND SYSTEMS FOR OPERATING A DRIVELINE CLUTCH - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, operation of a driveline disconnect clutch is adjusted to compensate for clutch wear and manufacturing tolerances. | 11-07-2013 |
20130296126 | METHODS AND SYSTEMS FOR ENGINE CRANKING - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine may be started in one of two ways depending on operating conditions. In particular, the engine may be started via a lower power output electric machine or a higher power output electric machine. | 11-07-2013 |
20130296128 | METHOD AND SYSTEM TO MANAGE DRIVELINE OSCILLATIONS WITH CLUTCH PRESSURE CONTROL - A system and method for controlling a vehicle having an electric traction motor coupled to a transmission by a clutch include modifying torque transmitted to the driveline by modifying the clutch apply pressure in response to a difference between rotational speed of a driveline component and a filtered rotational speed of the driveline component to reduce driveline oscillation when the clutch is unlocked. The clutch pressure may be modified in response to a vehicle event that may otherwise induce driveline oscillations, such as a transmission ratio change or regenerative braking, for example. | 11-07-2013 |
20130296132 | METHODS AND SYSTEMS FOR ADJUSTING DRIVELINE DISCONNECT CLUTCH OPERATION - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, torque transferred via a driveline disconnect clutch is estimated based on characteristics of a torque converter to improve driveline operation. | 11-07-2013 |
20130297115 | METHODS AND SYSTEMS FOR OPERATING A DRIVELINE DISCONNECT CLUTCH RESPONSIVE TO ENGINE OPERATING CONDITIONS - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a driveline disconnect clutch transfer function may be adapted in response to engine operating conditions during closing of the driveline disconnect clutch. | 11-07-2013 |
20130297116 | METHODS AND SYSTEMS FOR OPERATING A VEHICLE DRIVELINE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is accelerated to a speed of a driveline integrated starter/generator before the engine is coupled to the driveline integrated starter/generator. | 11-07-2013 |
20130297117 | METHODS AND SYSTEMS PROVIDING DRIVELINE BRAKING - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline braking may transition from regenerative braking to engine braking to reduce the possibility of battery degradation. | 11-07-2013 |
20130297118 | METHODS AND SYSTEMS FOR LAUNCHING A VEHICLE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is started and idled before engine torque is required so that driveline torque response may be improved. | 11-07-2013 |
20130297119 | METHODS AND SYSTEMS FOR ADJUSTING DRIVELINE OPERATION DURING AN ACCELERATOR TIP-OUT - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine may be operated at an idle speed while a driveline disconnect clutch separating the engine from a driveline is open in response to a reduction in driver demand torque. Engine torque may be applied to the driveline by simply closing the driveline disconnect clutch. | 11-07-2013 |
20130297121 | METHODS AND SYSTEMS FOR DRIVELINE MODE TRANSITIONS - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a method for transitioning between regenerative braking and providing positive torque to a driveline is presented. | 11-07-2013 |
20130297157 | METHODS AND SYSTEMS FOR IMPROVING TRANSMISSION SHIFTING - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is couple to a transmission in response to a transmission upshift to reduce transmission output shaft torque disturbances. | 11-07-2013 |
20140046529 | METHODS AND SYSTEMS FOR OPERATING A DRIVELINE DISCONNECT CLUTCH - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, application of a driveline disconnect clutch to start an engine is described. The approach applies the driveline disconnect clutch to rotate an engine and at least partially disengages the driveline disconnect clutch to reduce the possibility of a reduction in torque applied to vehicle wheels. | 02-13-2014 |
20140057754 | METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL - Methods and systems are provided for controlling a vehicle engine coupled to a stepped-gear-ratio transmission. One example method comprises, in response to a first vehicle moving condition, shutting down the engine and at least partially disengaging the transmission while the vehicle is moving; and during a subsequent restart, while the vehicle is moving, starting the engine using starter motor assistance and adjusting a degree of engagement of a transmission clutch to adjust a torque transmitted to a wheel of the vehicle. | 02-27-2014 |
20140057755 | METHOD FOR STARTING AN ENGINE - A method for improving starting of an engine that may be repeatedly stopped and started is presented. In one example, the method adjusts a desired engine speed to at least two levels during engine speed run-up from cranking to engine idle speed. The method may improve vehicle launch for stop/start vehicles. | 02-27-2014 |
20140094343 | METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL - Methods and systems are provided for controlling a vehicle system including a selectively shut-down engine, a torque converter and a torque converter lock-up clutch. One example method comprises, during an idle-stop engine shut-down, restricting flow of transmission fluid out of the torque converter, and adjusting engagement of the torque converter lock-up clutch to adjust a drag torque on the engine to stop the engine. | 04-03-2014 |
20140100082 | METHOD AND SYSTEM FOR STOPPING AN ENGINE - A method and a system for improving operation of a hybrid vehicle are presented. In one example, a disconnect clutch is operated in response to an engine stop request to adjust an engine stopping position during an engine shutdown. The approach may reduce engine starting time after the engine stop. | 04-10-2014 |
20140100727 | METHOD AND SYSTEM FOR OPERATING A HYBRID POWERTRAIN - A method and a system for improving operation of a hybrid vehicle are presented. In one example, operation of a hybrid driveline is adjusted in response to driving conditions that may cause wheel slip or a stuck vehicle. The approach may reduce driveline wear and improve vehicle drivability. | 04-10-2014 |
20140121059 | Clutch Torque Trajectory Correction To Provide Torque Hole Filling During A Ratio Upshift - A multiple ratio transmission having an input shaft, an output shaft and oncoming clutch and off-going clutch for effecting ratio upshifts is provided. The transmission also includes a transmission controller configured for controlling shifts. During the torque phase of a ratio upshift, the controller increases input torque. Next, the controller estimates an oncoming clutch target torque. The controller controls a torque input to ensure the off-going clutch remains locked. The controller measures an actual transmission value for a torque transmitting element of the transmission and corrects the oncoming clutch target torque using the actual transmission value whereby an increasing torque for the oncoming friction element is achieved with minimal torque transients along the output shaft during the upshift. | 05-01-2014 |
20140148304 | Adjusting Clutch Slip Based on Sensed Parameter of Transmission Shaft to Control NVH Level in Vehicle Powertrain - A vehicle powertrain includes a transmission and a clutch. The slip of the clutch is adjusted to a target where a magnitude of a sensed parameter of a shaft of the transmission corresponds to a desired noise, vibration, and harshness (NVH) level in the powertrain. The sensed parameter of the transmission shaft may be one of acceleration, speed, and torque of the transmission shaft. The transmission shaft may be one of the input shaft and output shaft of the transmission. | 05-29-2014 |
20140274555 | AUTOMATIC TRANSMISSION SHIFT CONTROL BASED ON TRANSMISSION INPUT SHAFT TORQUE SIGNAL - A system and method for minimizing torque disturbances during a shift event for an automatic transmission control actual transmission input shaft torque using a transmission input shaft signal produced by an input shaft torque sensor. The torque sensor provides a signal to a controller that monitors the measured transmission input torque. The torque sensor may be implemented by a strain gauge, a piezoelectric load cell, or a magneto-elastic torque sensor. The system may include a vehicle powertrain having an engine, a transmission coupled to the engine via a torque converter, an input torque sensor coupled to the input shaft of the transmission and a controller configured to control engine torque to cause the measured transmission input shaft torque to achieve a target transmission input shaft torque during the shift event. | 09-18-2014 |
20140274556 | AUTOMATIC TRANSMISSION SHIFT CONTROL BASED ON TORQUE PHASE DETECTION USING MEASURED TRANSMISSION INPUT TORQUE - A system and method for controlling a vehicle powertrain having a transmission to improve shift quality to detect the start of a torque phase of the shift based on a measured transmission input shaft torque. A torque sensor provides a signal to a controller that monitors initial rise time of the measured transmission input shaft torque. The torque sensor may be implemented by a strain gauge, a piezoelectric load cell, or a magneto-elastic torque sensor. The system may include a vehicle powertrain having an engine, a transmission coupled to the engine via a torque converter and a controller configured to initiate torque phase control when the slope of the transmission input shaft torque exceeds a predetermined threshold after initiation of the shift preparatory phase. | 09-18-2014 |
20140277974 | AUTOMATIC TRANSMISSION SHIFT CONTROL BASED ON CLUTCH TORQUE CAPACITY DETECTION USING CALCULATED TRANSMISSION INPUT TORQUE - A system and method for controlling a vehicle powertrain having a transmission to improve shift quality is based on detection of an initial rise time of an on-coming clutch torque capacity, which indicates the start of the torque phase. The initial rise time is detected using a transmission input shaft torque computation. The system may include a vehicle powertrain having an engine, a transmission coupled to the engine via a torque converter and a controller configured to initiate torque phase control when a difference between a first transmission input shaft torque and a second transmission input shaft torque exceeds a first predetermined threshold parameter during a shift event characterized by a preparatory phase, a torque phase and an inertia phase. | 09-18-2014 |
20140287872 | Clutch Torque Trajectory Correction to Provide Torque Hole Filling during a Ratio Upshift - A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated friction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a torque source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a torque source is modulated. A perceptible transmission output torque reduction during an upshift is avoided. Measured torque values are used during a torque phase of the upshift to correct an estimated oncoming friction element target torque so that transient torque disturbances at an oncoming clutch are avoided and torque transients at the output shaft are reduced. | 09-25-2014 |
20140323266 | METHODS AND SYSTEMS FOR ADJUSTING DRIVELINE OPERATION DURING AN ACCELERATOR TIP-OUT - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine may be operated at an idle speed while a driveline disconnect clutch separating the engine from a driveline is open in response to a reduction in driver demand torque. Engine torque may be applied to the driveline by simply closing the driveline disconnect clutch. | 10-30-2014 |
20140323267 | METHODS AND SYSTEMS FOR DRIVELINE SAILING MODE ENTRY - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, entry conditions for entering a driveline sailing mode are described. Driveline sailing mode may improve driveline torque response and vehicle drivability. | 10-30-2014 |
20150024904 | Adjusting Clutch Slip Based on Sensed Parameter of Transmission Shaft to Control Vehicle NVH - A vehicle powertrain includes a transmission and a clutch. The slip of the clutch is adjusted to a predefined target where a sensed parameter of a shaft of the transmission corresponds to a specified noise, vibration, and harshness (NVH) level in the powertrain. The sensed parameter of the transmission shaft may be one of acceleration, speed, and torque of the transmission shaft. The transmission shaft may be one of the input shaft and output shaft of the transmission. | 01-22-2015 |
20150051045 | METHODS AND SYSTEMS FOR VEHICLE DRIVELINE TORQUE ESTIMATION - Systems and methods for improving hybrid vehicle torque control are presented. The system and methods included may estimate driveline torque via springs of a dual mass flywheel. The estimated driveline torque may provide feedback for adjusting operation of a driveline disconnect clutch and/or engine torque. | 02-19-2015 |
20150072832 | METHODS AND SYSTEMS FOR OPERATING A VEHICLE DRIVELINE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is accelerated to a speed of a driveline integrated starter/generator before the engine is coupled to the driveline integrated starter/generator. | 03-12-2015 |
20150105216 | METHODS AND SYSTEMS FOR LAUNCHING A VEHICLE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is started and idled before engine torque is required so that driveline torque response may be improved. | 04-16-2015 |
20150141197 | METHODS AND SYSTEMS FOR DRIVELINE MODE TRANSITIONS - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a method for transitioning between regenerative braking and providing positive torque to a driveline is presented. | 05-21-2015 |
20150183416 | METHOD AND SYSTEM FOR STOPPING AN ENGINE - A method and a system for improving operation of a hybrid vehicle are presented. In one example, a disconnect clutch is operated in response to an engine stop request to adjust an engine stopping position during an engine shutdown. The approach may reduce engine starting time after the engine stop. | 07-02-2015 |
20150210270 | METHODS AND SYSTEMS FOR A VEHICLE DRIVELINE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline operating modes may be manually selected to improve hybrid driveline operation during off road conditions. The approaches may improve vehicle drivability and reduce driveline degradation. | 07-30-2015 |
20150251651 | METHODS AND SYSTEMS FOR CONDITIONALLY ENTERING A DRIVELINE SAILING MODE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a driveline may selectively enter a sailing mode to provide quick driveline torque response with reduced impact on fuel economy. | 09-10-2015 |
20150251652 | METHODS AND SYSTEMS FOR ADJUSTING DRIVELINE DISCONNECT CLUTCH OPERATION - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, torque transferred via a driveline disconnect clutch is estimated based on characteristics of a torque converter to improve driveline operation. | 09-10-2015 |
20150266469 | METHODS AND SYSTEMS FOR ENGINE CRANKING - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine may be started in one of two ways depending on operating conditions. In particular, the engine may be started via a lower power output electric machine or a higher power output electric machine. | 09-24-2015 |
20150344026 | METHODS AND SYSTEMS FOR OPERATING A DRIVELINE CLUTCH - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, operation of a driveline disconnect clutch is adjusted to compensate for clutch wear and manufacturing tolerances. | 12-03-2015 |
20150353069 | METHODS AND SYSTEMS PROVIDING DRIVELINE BRAKING - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline braking may transition from regenerative braking to engine braking to reduce the possibility of battery degradation. | 12-10-2015 |
20150360683 | METHODS AND SYSTEMS FOR OPERATING A DRIVELINE DISCONNECT CLUTCH - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, application of a driveline disconnect clutch to start an engine is described. The approach applies the driveline disconnect clutch to rotate an engine and at least partially disengages the driveline disconnect clutch to reduce the possibility of a reduction in torque applied to vehicle wheels. | 12-17-2015 |