Patent application number | Description | Published |
20100037493 | Wear-Resistant, Impact-Resistant Excavator Bucket Manufactured by Casting and Manufacturing Method Thereof - An excavator bucket is manufactured by: making a wooden or metallic casting pattern; inserting the casting pattern into a molding box and subjecting the inserted pattern to sand casting; taking out the pattern from the molding box to form a mold cavity; heating an ingot at a temperature of 1600-1650° C., and pouring the heated ingot into the mold cavity; solidifying the poured ingot and separating the upper mold portion and the molding box from the solidified ingot, thus producing a sand-cast bucket; charging the sand-cast bucket into an electric furnace, heating the charged bucket at a temperature of 900-1100° C., and quenching the heated bucket in cold water; subjecting the coupling part of the quenched bucket to boring, face milling, drilling and tapping; assembling parts, bushings, pins and bolts, to the coupling part; and washing, drying and painting the assembled bucket. | 02-18-2010 |
20100284166 | METHOD FOR FABRICATION OF THIN FILM PHOSPHOR, THIN FILM PHOSPHOR, AND PHOSPHOR PROUCT USING THE SAME - Disclosed are a method for fabrication of a thin film phosphor, a thin film phosphor and a product using the same. The thin film phosphor is fabricated by adsorbing a raw material to a surface of a substrate simultaneously with diffusing the same or, otherwise, depositing the raw material on the substrate and heating the same, so as to diffuse the raw material from the surface of the substrate into the substrate wherein the substrate contains at least one selected from constitutional elements of the phosphor. The fabricated thin film phosphor has a constitutional composition continuously varied to gradually come close to a constitutional composition of the substrate when the constitutional elements of the phosphor are diffused from a surface to an inner side of the substrate. In particular, if the substrate material, the raw material and the phosphor layer material have the same or similar structure, and when the phosphor layer material has an anisotropic texture structure, light luminance is maximized while a decay time is minimized. According to this disclosure, different thin film phosphors with improved luminance comparable to that of a powder phosphor may be fabricated. Compared to such powder phosphor, the thin film phosphor fabricated as described above is thermally and chemically stable and does not exhibit an interference pattern or light reflection between the thin film phosphor and the substrate so as to have excellent light transmission, thereby being applicable to large-scale display devices. | 11-11-2010 |
Patent application number | Description | Published |
20080204378 | Organic electro luminescence display and driving method thereof - An organic electro luminescence display and driving method uses an image determination unit to generate image determination signals indicative of whether images generated in response to data signals are moving images still images, selects a gamma value corresponding to the brightness of the ambient light sensed, applies gamma correction signals corresponding to selected gamma values to control grey level voltages of the data signals, generates a selection signal based on a comparison of a previously set reference value with the photo sensor signal, and generates R′,G′,B′ data to vary an input image RGB data to correspond to the selection signal, varies a change range of the changing R′,G′,B′ data to correspond to the image determination signal, and supplies the varied change range of the changing data (R′,G′,B′ data) to the data driver. | 08-28-2008 |
20080204475 | Power reduction driving controller, organic light emitting display including the same, and associated methods - A power reduction driving controller includes an image analyzer adapted to analyze input image data, a scaling factor calculator adapted to generate a scaling factor with respect to the analyzed input image data, and to apply the scaling factor to the input image data to generate a scaled-down image data, and an intensity resealing unit adapted to reduce an overall intensity level of the input image data. | 08-28-2008 |
20100124082 | METHOD FOR SELECTING THE OPTIMUM NUMBER OF PHASES FOR CONVERTER AND SYSTEM USING THE SAME - A method for selecting the optimum number of phases for a converter is provided, which selects a duty range using an input voltage and an output voltage, obtains ripple values for multiple phases in the duty range, and selects the optimum number of phases using the corresponding ripple values. The method for selecting the optimum number of phases for a converter includes a duty range selection step of selecting a duty range using an input voltage and an output voltage, a ripple value calculation step of obtaining ripple values for multiple phases within the selected duty range, a range ripple selection step of selecting one or more phases in the duty range, and a rated ripple selection step of selecting the phases having the minimum ripple value in a rated duty among the phases selected in the range ripple selection step. | 05-20-2010 |
20100188375 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A light emitting display is configured to reduce or prevent motion blur by shortening a time that a black frame is displayed between image frames. One embodiment includes display region, a data driver, a scan driver, and a controller. The display region displays frames of images according to a data signal and a scan signal. The data driver transmits data for displaying first frames and second (black) frames between the first frames. The scan driver includes first and second scan driving circuits for transmitting scan signals, and a switch unit for selectively coupling the first and second scan driving circuits. The scan driver transmits scan signals sequentially during the first frames and transmits scan signals to at least two of the scan lines concurrently by driving the first and second scan driving circuits in parallel during the second frames. The controller transmits a driving control signal to control the switch. | 07-29-2010 |
20130335041 | POWER CONVERSION APPARATUS AND METHOD OF CONTROLLING THE SAME - A power conversion apparatus including a current source converter configured to convert Alternate Current (AC) power to Direct Current (DC) power; a power controller configured to set a d-axis current command and a q-axis current command, which correspond to the AC power to the current source converter, by reflecting a difference between a measurement DC link voltage measured at an output terminal of the current source converter and a DC link voltage set by a DC link voltage command; and a phase angle controller configured to adjust a phase angle of the current source converter and transmit the adjusted phase angle to the current source converter, in response to the d-axis current command and the q-axis current command. | 12-19-2013 |
20140035495 | METHODS AND APPARATUSES FOR OBTAINING MAXIMUM MAGNETIC FLUX OF PERMANENT MAGNET SYNCHRONOUS MOTORS - A method of obtaining a maximum magnetic flux of a permanent magnet synchronous motor may comprise: receiving a first command voltage from a current controller to control current applied to the permanent magnet synchronous motor; receiving an on/off duty ratio of a control pulse signal to control an output voltage of an inverter that drives the permanent magnet synchronous motor, the on/off duty ratio being determined based on the first command voltage; generating a second command voltage corresponding to the output voltage to be output from the inverter based on the on/off duty ratio of the control pulse signal; obtaining a maximum command voltage error by comparing the first and second command voltages; and/or obtaining the maximum command magnetic flux of the permanent magnet synchronous motor according to a position of a rotor of the permanent magnet synchronous motor based on the maximum command voltage error. | 02-06-2014 |
20140070755 | METHODS AND APPARATUSES FOR CONTROLLING OUTPUT VOLTAGES OF INVERTERS DRIVING ELECTRIC MOTORS - A method of controlling an output voltage of an inverter driving an electric motor may include calculating a current total harmonic distortion (THD) of a current output to the electric motor; comparing the current THD with a reference current THD; determining a pulse width modulation (PWM) method to be changed from a first modulation method that reduces harmonic components of the current output to the electric motor to a second modulation method when the current THD is less than the reference current THD, the PWM method modulating a pulse width of a control pulse signal for controlling the output voltage of the inverter; and/or generating the control pulse signal based on the determined PWM method. | 03-13-2014 |
20140111166 | CIRCUITS FOR CHARGING BATTERIES AND BOOSTING VOLTAGES OF BATTERIES, AND METHODS OF CHARGING BATTERIES - A circuit may comprise a direct current (DC)/DC boost converter connected to a battery that includes a plurality of cells; a DC link connected between the DC/DC boost converter and an inverter; and/or a charging circuit connected between the battery and the DC link. The charging circuit may be connected to the DC/DC boost converter in parallel. A method of charging a battery using a regenerative energy of a motor may include storing the regenerative energy of the motor by using a converter with a multi-winding transformer, selecting a cell to be charged from among a plurality of cells included in the battery, and transferring the stored regenerative energy to the selected cell by using the converter. | 04-24-2014 |
20140206097 | Apparatus for Providing Sample Gas and Related Methods - An apparatus for providing a sample gas includes a gas dosing part, a first pressure gauge for measuring a pressure of a sample gas dosed through the gas dosing part, a plurality of flow lines positioned between the gas dosing part and a gas analyzer that can be opened or closed according to the pressure measured by the first pressure gauge, a plurality of control valves respectively formed in the plurality of flow lines and controlling the plurality of flow lines to be opened or closed, a bypass line formed on at least one of the plurality of flow lines and exhausting some of the sample gas flowing along the flow lines, and a controller for selecting one of the plurality of flow lines according to the pressure measured by the first pressure gauge and controlling the control valves formed in the selected flow line. | 07-24-2014 |
Patent application number | Description | Published |
20090278866 | Gamma corrected display device - A display device includes a pixel unit including a plurality of pixels, a data driver adapted to supply data signals to the pixels, and a timing controller adapted to supply data control signals and image data to the data driver, wherein the timing controller is adapted to divide the pixel unit into a plurality of regions and supply gamma values assigned to each region to the data driver. | 11-12-2009 |
20100007674 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD FOR DRIVING THE SAME - In an organic light emitting display, a gamma can be applied according to color regardless of the sequence of data output from a data driver, even if a separate gamma by color is used. A method for driving the organic light emitting display is also provided. | 01-14-2010 |
20100097302 | ORGANIC LIGHT EMITTING DISPLAY - An organic light emitting display includes a display unit including a plurality of pixels coupled to scan lines and data lines, a data driver for applying data signals to the data lines, a black data inserting unit between the display unit and the data driver for applying black data to the display unit, the black data being applied between periods in which the data signals are applied, and a timing controller for controlling the data driver and the black data inserting unit. | 04-22-2010 |
20120062481 | FLAT PANEL DISPLAY WITH INTEGRATED TOUCH SCREEN PANEL - A flat panel display having an integrated touch screen panel directly formed on a sealing thin film is disclosed. In the display, sensing lines of the touch screen panel are formed to extend to a substrate of the display panel, on which organic light emitting elements are formed, so that the touch screen panel and the display panel are connected to a flexible printed circuit board, thereby simplifying manufacturing processes and decreasing product cost. | 03-15-2012 |
20140168189 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD FOR DRIVING THE SAME - An organic light emitting diode (OLED) display and a method for driving the same, which can display an image with more uniform luminance is disclosed. In one aspect, the OLED display includes a plurality of pixels arranged in a matrix of a plurality of rows and a plurality of columns; a data driver supplying second data signals corresponding to a second data obtained by converting a first data, in response to first data signals corresponding to the first data or a data control signal; and a compensator converting output currents output from the pixels, corresponding to the first data signals into a output voltages, and supplying, to the data driver, the data control signal for converting the first data into the second data, corresponding to the output voltages and the first data based on the output voltages and the first data. | 06-19-2014 |
20140333686 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel for a display panel includes an organic light emitting diode and two driving transistors. The first driving transistor supplies current from a first power source to the organic light emitting diode based on a voltage applied to a first node. The second driving transistor coupled between an electrode of the first driving transistor and the organic light emitting diode. The second driving transistor is turned on or turned off corresponding to a data signal supplied from a data line. A third transistor, coupled between a gate electrode of the second driving transistor and the data line, is turned on when a scan signal is supplied to a scan line. A compensation circuit is coupled to the first node to compensate for a voltage corresponding to a threshold voltage of the first driving transistor. | 11-13-2014 |
Patent application number | Description | Published |
20090002810 | Sheet Type Phosphors, Preparation Method Thereof, And Light Emitting Devices Using These Phosphors - The present invention relates to a sheet type phosphor used for a light source absorbing blue/near ultraviolet light and emitting visible light, wherein the phosphor is obtained by molding a phosphor alone or a mixture of the phosphor and a light transmissive ceramic material in the shape of a sheet, a preparation method of the phosphor, and a light emitting device using the phosphor. A light emitting device for wavelength conversion manufactured by bonding the sheet type phosphor of the present invention to a light emitting device chip for emitting light from near ultraviolet to blue light induces remarkable reduction of defect rate and manufacturing cost and provides excellent thermal durability and color reproducibility as compared with a conventional light emitting device using phosphor powder. Further, the sheet type phosphor can be applied to a light source for LCD backlight, household lighting or the like. | 01-01-2009 |
20090243805 | RFID TAG AND RFID SYSTEM USING THE SAME - An RFID tag and an RFID tag using the same are disclosed, wherein the RFID tag comprises: a circuit unit arranged on a first part of a board; and a loop type antenna on a second part of the board. | 10-01-2009 |
20100001102 | Nozzle Assembly for Injector - The present invention relates to a nozzle assembly for an injector that enables production of high quality injection products by effectively exhausting gas in a molten plastic flowing at a high speed. The present invention may include a body having a molten plastic pathway through which the molten plastic passes; a head, one end thereof being connected to the body and the other end thereof being provided with an injecting hole for injecting the molten plastic; a poppet mounted in the body, first and second plastic moving groves being formed in a length direction thereof at an exterior circumference thereof such that the molten plastic passes through the first and second plastic moving groves and gas in the molten plastic is extracted; and a first vent ring exhausting the extracted gas to the exterior of the body, the poppet being inserted in the first vent ring, wherein the molten plastic pathway is only communicated with the second plastic moving groove. | 01-07-2010 |
20140097642 | STRENGTH REINFORCEMENT DEVICE FOR FRONT SHOCK ABSORBER OF VEHICLE - Provided is a strength reinforcement device for a front shock absorber of a vehicle to provide a sufficient supporting force in spite of a load transferred to the front shock absorber. To this end, a cowl inner lower panel and a reinforce panel which form a box-shape cross-section structure are provided and their both side end portions are integrally connected to shock absorber supporting panels. A support panel is integrally formed in front end portions of both side ends of the cowl inner lower panel to cover and be integrally connected to the front portions of the shock absorber supporting panels, thereby easily distributing the loads transferred in various directions from the shock absorber supporting panels engaged with the front shock absorbers and providing a sufficient supporting force for the shock absorber supporting panels. | 04-10-2014 |