Patent application number | Description | Published |
20100237800 | LIGHT EMITTING DEVICE AND DRIVING CIRCUIT THEREOF - A light emitting device comprises a first light emitting unit and a second light emitting unit connected in series with each other, and a PTF unit connected in parallel with the first light emitting unit and in series with the second light emitting unit. Each of the first light emitting unit and second light emitting unit comprises at least one LED. The PTF unit allows the second light emitting unit to be operated before operation of the first light emitting unit upon application of an AC voltage source. The light emitting device reduces total harmonic distortion and flickering, and improves power factor and optical efficiency. A driving circuit of the light emitting device is also disclosed. | 09-23-2010 |
20100244727 | LIGHT-EMITTING DIODE DRIVER - A light-emitting diode (LED) driver used to power at least one LED with an alternating current (AC) voltage source is provided. The LED driver includes a rectifying unit applying N-fold higher voltage than the voltage from the AC voltage source to the LED. The rectifying unit includes a first charging unit to charge a first voltage, and a second charging unit to charge a second voltage. The first voltage includes the voltage at the AC voltage source during a first half-cycle of one AC voltage cycle, and the second voltage includes the first voltage and the voltage at the AC voltage source during the second half-cycle of the AC voltage cycle. Accordingly, the LED driver may improve light-emitting efficiency and reduce flicker of LEDs. | 09-30-2010 |
20100328961 | LIGHT-EMITTING MODULE - A light-emitting module includes a printed circuit board (PCB), a fastening member, and a light-emitting package. The PCB has a power-supplying pad to provide electrical power. The fastening member is disposed on the PCB and has a package-receiving hole exposing the power-supplying pad. The light-emitting package is received by the package-receiving hole such that the light-emitting package is electrically connected to the power-supplying pad and detachably coupled with the fastening member. Therefore, the light-emitting package may be easily combined with the PCB, and the light-emitting package may be replaced when desired. | 12-30-2010 |
20110181196 | DIMMER FOR A LIGHT EMITTING DEVICE - Exemplary embodiments of the present invention relate to a dimmer for a light emitting device using an alternating (AC) voltage source. The dimmer includes a switch to be switched in response to a switching control signal and to deliver an AC voltage of an AC voltage source to the light emitting device, a current detector to detect an electric current to be provided to the light emitting device and to output a current detection signal, and a controller to output the switching control signal in response to a dimming control signal and the current detection signal. | 07-28-2011 |
20120074849 | ILLUMINATION SYSTEM - An illumination system according to an exemplary embodiment of the present invention includes at least one light emitting apparatus including at least one light emitting module detachably coupled to the at least one light emitting apparatus, the at least one light emitting module including an information storage unit to store characteristic information of the at least one light emitting module. The at least one light emitting apparatus also includes a controller configured to detect whether the at least one light emitting module is connected to or disconnected from the at least one light emitting apparatus, and to read out the characteristic information of the at least one light emitting module according to a detection result, wherein the characteristic information includes unique identification information or absolute lifetime information of the at least one light emitting module. | 03-29-2012 |
20120098448 | LIGHT EMITTING DIODE DRIVING DEVICE - An exemplary embodiment of the present invention discloses a light emitting diode (LED) driving device for an LED device having a plurality of LEDs, the driving device including a rectifying unit configured to receive an alternating current (AC) voltage and output a rectified voltage, and a driving control unit configured to drive the plurality of LEDs based on stored data by receiving the rectified voltage at a first period. | 04-26-2012 |
20140362071 | BACKLIGHT DRIVING APPARATUS - A backlight driving apparatus that drives a backlight unit having a plurality of LEDs is provided, which includes a rectifying unit rectifying an AC voltage and generating a driving voltage for the plurality of LEDs, a plurality of connection changing units changing connection relations between the plurality of LEDs depending on a level of the driving voltage, and a light output compensation unit generating a compensation voltage using the driving voltage and selectively supplying the compensation voltage to the plurality of LEDs. | 12-11-2014 |
20150028760 | LED LUMINAIRE - A light-emitting diode (LED) luminaire includes a light-emitting part, a rectification unit configured to perform full-wave rectification of an alternating current (AC) voltage to supply a first drive voltage to the light-emitting part, a power factor compensation unit configured to be charged with the first drive voltage during a charge period and supply a second drive voltage to the light-emitting part during a compensation period, and an LED drive controller configured to determine a voltage level of the first drive voltage or the second drive voltage and control sequential driving of the first LED group to the n | 01-29-2015 |
20150084541 | LED DIMMER, LED LIGHTING DEVICE COMPRISING SAME, AND METHOD FOR CONTROLLING DIMMING OF LED LIGHTING DEVICE - A light-emitting diode (LED) dimmer for an LED lighting device, including a power switch, a drive voltage supply, and a LED light-emitting unit. Operating zones of the LED lighting device are changed in accordance with the switching of the power switch, and a dimming level for a next operating zone is determined on the basis of the dimming level and time while the power switch was on during the previous operating period. | 03-26-2015 |
20150154917 | BACKLIGHT MODULE, METHOD FOR DRIVING SAME AND DISPLAY DEVICE USING SAME - A display device includes a power rectifying unit for rectifying alternating power, a power factor correction unit correcting the power factor of the alternating power and outputting a power factor corrected voltage containing a direct current voltage component having at least a predetermined size, a display module driven by the power factor corrected voltage, a backlight unit, and a driving unit supplying the main driving voltage to a backlight unit, receiving the power factor corrected voltage when the size of the rectified voltage is smaller than a preset threshold value to generate a supplementary driving voltage. | 06-04-2015 |
20150181659 | LED DRIVING DEVICE - Disclosed is an LED driving apparatus capable of removing a non-light-emitting section and extending device life span by adding an optical power compensation circuit to a driving circuit of a multi-stage current driving mode. The design is more efficient with respect to a forward voltage of an LED array driven by the multi-stage current driving circuit and the unique operational characteristics of the optical power compensation circuit. The LED driving apparatus drives a plurality of LED groups and includes a rectification unit for rectifying an AC voltage to generate a ripple voltage at an output, an optical power compensation unit to supply a pre-stored compensation voltage to the LED array when the ripple voltage is less than a minimum forward voltage in the plurality of LED groups, and a constant current driving unit connected the plurality of LED groups to sequentially drive each LED group with a constant current. | 06-25-2015 |
20150245427 | LED DRIVING APPARATUS AND DRIVING METHOD FOR CONTINUOUSLY DRIVING LED - Disclosed herein are a light emitting diode (LED) driving apparatus and driving method for continuously driving an LED. According to the present invention, an LED driving apparatus and driving method for continuously driving an LED capable of compensating for a light output of an LED lighting using an energy chargeable and dischargeable element and/or circuit are proposed. | 08-27-2015 |
20150296582 | LED LUMINESCENCE APPARATUS - An LED luminescence apparatus is provided, which includes a rectifying unit rectifying an AC voltage and generating a rectified voltage; a plurality of LEDs connected in series to an output terminal of the rectifying unit; a plurality of switches having drain terminals connected to cathodes of the plurality of LEDs, respectively; and a switch control unit sensing current through a plurality of resistors connected to source terminals of the plurality of switches, respectively, comparing the sensed current with a set reference current, and outputting a voltage corresponding to a difference between the sensed current and the set reference current to a gate terminal of each of the plurality of switches. | 10-15-2015 |
20150305098 | LED DRIVING CIRCUIT FOR CONTINUOUSLY DRIVING LED, LED LIGHTING DEVICE COMPRISING SAME AND DRIVING METHOD - An exemplary embodiment discloses a light-emitting diode (LED) driving circuit including an LED driving module configured to provide a first driving voltage to an LED light emitting module including a first LED group to an n-th LED group, n is an integer which is equal to or larger than 2, and sequentially drive the first LED group to the n-th LED group depending on a voltage level of the first driving voltage and a second driving voltage providing module configured to store some of the first driving voltage and selectively provide a second driving voltage to some of the LED groups other than at least the first LED group to an m-th LED group among the LED groups in a V | 10-22-2015 |
20150312977 | LED LUMINESCENCE APPARATUS AND METHOD OF DRIVING THE SAME - A light-emitting diode (LED) driving circuit configured to drive LED units includes a rectification circuit unit to receive an alternating current (AC) power voltage and rectify the AC power voltage to output a unidirectional ripple voltage, a pulse-width modulation (PWM) signal generation unit to generate PWM decision signals. The PWM signal generation unit is configured to sequentially drive the LEDs according to the PWM decision signals. | 10-29-2015 |
Patent application number | Description | Published |
20090237369 | TOUCH PANEL DISPLAY AND METHOD OF MANUFACTURING THE SAME - A display having a touch panel capability is provided. The display includes a first substrate and a second substrate opposing each other, a thin-film transistor for pixel driving formed on the first substrate, and a thin-film transistor for touch position detection including a source electrode and a drain electrode formed on the first substrate, and a gate electrode formed on the second substrate. | 09-24-2009 |
20100289733 | THIN FILM TRANSISTOR DISPLAY PANEL - A thin-film transistor display panel according to one or more embodiments is provided. According to an embodiment, a thin-film transistor display panel includes an insulation substrate, a gate line that is formed on the insulation substrate and is extended in a first direction, a first data line and a second data line that cross with the first gate line, and are respectively extended side by side in a second direction, a first switching element that is electrically connected to the gate line and the first data line, a second switching element that is electrically connected to the gate line and the second data line, a first pixel electrode that is connected to the first switching element, and is at least partly overlapped with the gate line of the front end, a second pixel electrode that is connected to the second switching element, and is arranged with the first pixel electrode side by side, and a storage line that is at least partly overlapped with the first pixel electrode and the second pixel electrode by being formed with the gate line side by side and being formed at both sides of the first pixel electrode and the second pixel electrode. | 11-18-2010 |
20130143463 | MANUFACTURING METHOD OF DISPLAY PANEL - A manufacturing method for a display panel includes: forming a first display panel including a plurality of pixel electrodes, gate lines and data lines connected to the pixel electrodes, a first pad unit connected to the gate lines, and a second pad unit connected to the data lines; forming a second display panel including a common electrode; forming a first short point connected to the first pad unit; forming a second short point connected to the second pad unit; adhering the first display panel and the second display panel; dividing the second display panel into a plurality of regions insulated from each other, a first region corresponding to the first short point, a second region corresponding to the second short point, and a third region; and applying a first voltage to the first region, a second voltage to the second region, and a third voltage to the third region. | 06-06-2013 |
20130162616 | TRANSPARENT DISPLAY APPARATUS - A transparent display apparatus includes a display panel including a plurality of pixels arranged in rows and columns, a plurality of gate lines, a plurality of data lines including first and second data lines, a gate driver, and a data driver. Each of the pixels comprises sub-pixels arranged in a row direction, each gate line is operatively coupled to sub-pixels arranged in a corresponding row, and each first and second data line is operatively coupled to sub-pixels arranged in a corresponding column. The gate driver sequentially applies a gate signal to the pixels through the gate lines. The data driver applies sub-data signals to the sub-pixels through the first data lines, and applies down data signals to the sub-pixels through the second data lines. Each of the down data signals has a voltage level lower than a voltage level of a corresponding sub-data signal. | 06-27-2013 |
20130194536 | LIQUID CRYSTAL DISPLAY - A liquid crystal display is provided. A liquid crystal display includes: a first substrate; a thin film transistor disposed on the first substrate; and a first electrode disposed on the thin film transistor and connected to an output terminal of the thin film transistor, wherein the first electrode includes a first region and a second region each including a plurality of minute branches separated from each other by open parts, portions of at least two minute branches among the plurality of minute branches are connected to form a plurality of minute plate branches, and wherein the minute plate branch has a wider width than a minute branch. | 08-01-2013 |
20130242239 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display including a partial plate electrode along with a minute pattern in pixel electrode thereby increasing the viewing angle and the lateral visibility of the liquid crystal display, as well as the response speed A step provider is provided to reinforce the control force of the liquid crystal molecules, thereby reducing the texture generated in the center of the pixel. | 09-19-2013 |
20140159068 | DISPLAY DEVICE - A display device includes: a substrate; a signal line on the substrate; a signal input line on the substrate and connected to a driver; a first insulating layer between the signal line and the signal input line; a second insulating layer on the signal line, the signal input line and the first insulating layer; an organic layer on the second insulating layer; a first contact hole defined in the organic layer, the first insulating layer and the second insulating layer and exposing the signal line; a second contact hole defined in the organic layer and the second insulating layer and exposing the signal input line; and a connecting member on the organic layer, and connecting the signal line and the signal input line to each other through the first contact hole and the second contact hole, respectively. | 06-12-2014 |
20150070612 | THIN FILM TRANSISTOR SUBSTRATE AND MANUFACTURING METHOD THEREOF - A thin film transistor array panel includes a first substrate, a gate line disposed on the first substrate and includes a lower layer including titanium, a middle layer including a transparent conductive material, and an upper layer including copper, a pixel electrode disposed on the first substrate and includes a lower layer including titanium, and an upper layer including the transparent conductive material, a gate insulating layer disposed on the gate line and the pixel electrode, a semiconductor layer disposed on the gate insulating layer, a data line and a drain electrode disposed on the semiconductor layer, a passivation layer which covers the data line and the drain electrode, and a common electrode disposed on the passivation layer. | 03-12-2015 |
20150085229 | DISPLAY SUBSTRATE AND DISPLAY PANEL HAVING THE SAME - A display substrate is disclosed. In one aspect, the display substrate includes a base substrate having a first refractive index and receiving external light and an insulating layer disposed below the base substrate and having a second refractive index different from the first refractive index. The display substrate also includes a pixel electrode disposed below the first insulating layer and a first compensation layer forming an interface with the insulating layer and having a third refractive index greater than the first refractive index and less than the second refractive index. The first compensation layer is disposed between the first insulating layer and the base substrate. | 03-26-2015 |
20150138470 | LIQUID CRYSTAL DISPLAY PANEL AND METHOD OF MANUFACTURING THE SAME - A liquid crystal display panel is provided. The liquid crystal display panel includes a first substrate comprising a pixel area and a non-pixel area surrounding the pixel area, a thin-film transistor (TFT) disposed on the pixel area of the first substrate and a pixel electrode connected to the TFT, and a plurality of metal wirings disposed on the non-pixel area of the first substrate and one or more dummy patterns disposed adjacent to the metal wirings. The TFT includes a gate electrode, a source electrode, and a drain electrode, and the dummy patterns are formed of a same material as at least one of the gate source, the source electrode, and the drain electrode. | 05-21-2015 |
20150187800 | DISPLAY PANEL AND METHOD OF MANUFACTURING THE SAME - A display panel includes a first base substrate that includes an upper surface to which an external light is incident and a lower surface facing the upper surface and includes a plurality of pixel areas and a peripheral area adjacent to the pixel areas when viewed in a plan view, a plurality of pixels disposed on the lower surface of the first base substrate to respectively correspond to the pixel areas, and a black matrix layer disposed between the pixels and the lower surface of the first base substrate to overlap the peripheral area. The black matrix layer includes a low reflection layer disposed on the lower surface of the first base substrate and a light blocking layer disposed on the low reflection layer. | 07-02-2015 |
20150223359 | DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME - A display device includes a first supporting member disposed in the first pad area of the first base substrate and spaced apart from the sealing member to define a predetermined space. A second supporting member is filled in the predetermined space by filling and curing liquid material. This protects the display panel from harsh ambience, such as light, heat and moistures, reducing the sealing and black matrix area. Such improvement can decrease the bezel size, effectively increasing viewable area of the display, which becomes more important in the mobile device. | 08-06-2015 |
20150234240 | LIQUID CRYSTAL DISPLAY - A liquid crystal display is provided. A liquid crystal display includes: a first substrate; a thin film transistor disposed on the first substrate; and a first electrode disposed on the thin film transistor and connected to an output terminal of the thin film transistor, wherein the first electrode includes a first region and a second region each including a plurality of minute branches separated from each other by open parts, portions of at least two minute branches among the plurality of minute branches are connected to form a plurality of minute plate branches, and wherein the minute plate branch has a wider width than a minute branch. | 08-20-2015 |
20150285964 | DISPLAY DEVICE - Provided is a display device including: a display panel including a display area where an image is displayed and a non-display area surrounding the display area; and a first polarization member disposed on a front surface of the display panel and including a polarization area corresponding to the display area and a light blocking area corresponding to the non-display area, wherein the first polarization member corresponding to the light blocking area includes a plurality of scattering patterns which reduce reflectance of the non-display area. | 10-08-2015 |
20160091743 | CURVED LIQUID CRYSTAL DISPLAY - A curved liquid crystal display according to an exemplary embodiment of the present system and method includes: a first substrate; a first thin film display layer disposed at an upper surface of the first substrate; a second substrate; a second thin film display layer disposed at a lower surface of the second substrate; a sealant disposed at an edge of the first substrate and the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate and sealed by the sealant, wherein the first thin film display layer and the second thin film display layer face each other, the first substrate and the second substrate are curved to have the same degree of curvature, and a thickness of a side surface of the second substrate is thinner than a thickness of a center portion of the second substrate. | 03-31-2016 |
20160109763 | CURVED DISPLAY DEVICE - A display device according to an exemplary embodiment of the present inventive concept includes: a first insulation substrate; a thin film transistor disposed on the first insulation substrate; a pixel electrode coupled to the thin film transistor; a second insulation substrate facing the first insulation substrate; and a common electrode disposed on the second insulation substrate. The pixel electrode includes a first subpixel electrode including a first vertical stem portion and a first horizontal stem portion that is disposed perpendicular to the first vertical stem portion at an end of the first vertical stem portion, and a second subpixel electrode including a second vertical stem portion and a second horizontal stem portion that is disposed perpendicular to the second vertical stem portion at an end of the second vertical step portion. | 04-21-2016 |
20160109765 | CURVED DISPLAY DEVICE - A curved display device according to an exemplary embodiment of the present system and method includes: a first insulation substrate; a gate line and a data line disposed on the first insulation substrate to cross each other; a thin film transistor coupled to the gate line and the data line; a pixel electrode disposed on the thin film transistor; a common electrode facing the pixel electrode; and a liquid crystal layer disposed between the pixel electrode and the common electrode and having liquid crystal molecules. The pixel electrode includes: a cross-shaped stem portion; minute branch portions extending from the cross-shaped stem portion; and minute slits disposed between the minute branch portions, wherein a width of the minute slit is greater than that of the minute branch portion. | 04-21-2016 |
20160109768 | DISPLAY DEVICE - A display device according to an exemplary embodiment includes: a first insulation substrate; a thin film transistor disposed on the first insulation substrate; and a pixel electrode coupled to the thin film transistor. The pixel electrode includes a first subpixel electrode that is divided into two regions configured to arrange liquid crystal molecules while including one first horizontal stem portion, and a second subpixel electrode that includes a plurality of second horizontal stem portions. | 04-21-2016 |
20160109769 | DISPLAY DEVICE - A display device according to an exemplary embodiment of the present inventive concept includes: a first insulation substrate; a thin film transistor; a pixel electrode; a second insulation substrate; and a common electrode. The pixel electrode includes a first subpixel electrode including a first horizontal stem portion and a first vertical stem portion perpendicular thereto at one end of the first horizontal stem portion and a second subpixel electrode including a second vertical stem portion and a second horizontal stem portion perpendicular thereto at one end of the second horizontal stem portion, a plurality of regions in which arrangements of liquid crystal molecules are respectively different are divided by the first horizontal stem portion, the first vertical stem portion, the second horizontal stem portion, and the second vertical stem portion, and each of the plurality of regions has a longest vertical length of less than about 100 μm. | 04-21-2016 |
Patent application number | Description | Published |
20120281403 | LED LAMP - An exemplary embodiment of the present invention relates to a light-emitting diode (LED) lamp including a first light-emitting unit and a second light-emitting unit arranged above and below a reflector, so that light is emitted in both an upwards and downwards direction and light is reflected by the reflector, and so that the LED lamp has light distribution characteristics similar to those of conventional filament lamps. | 11-08-2012 |
20130314918 | LED ILLUMINATION APPARATUS - An LED illumination apparatus according to an exemplary embodiment of the present invention includes a substrate, a light source disposed on the substrate, a cover unit, wherein the cover unit is configured to cover the light source, which is disposed on the substrate, and a reflector which is configured to extend from the cover unit inside to the upper substrate, whereby a light generated by the light source illuminates an area below a bottom side of the substrate. | 11-28-2013 |
20140355245 | LED ILLUMINATION APPARATUS - An LED illumination apparatus according to an exemplary embodiment of the present invention includes a substrate, a light source disposed on the substrate, a cover unit, wherein the cover unit is configured to cover the light source, which is disposed on the substrate, and a reflector which is configured to extend from the cover unit inside to the upper substrate, whereby a light generated by the light source illuminates an area below a bottom side of the substrate. | 12-04-2014 |
20150204507 | LED ILLUMINATION APPARATUS - An LED illumination apparatus according to an exemplary embodiment of the present invention includes a substrate, a light source disposed on the substrate, a cover unit, wherein the cover unit is configured to cover the light source, which is disposed on the substrate, and a reflector which is configured to extend from the cover unit inside to the upper substrate, whereby a light generated by the light source illuminates an area below a bottom side of the substrate. | 07-23-2015 |
20150204513 | LED ILLUMINATION APPARATUS - An LED illumination apparatus according to an exemplary embodiment of the present invention includes a substrate, a light source disposed on the substrate, a cover unit, wherein the cover unit is configured to cover the light source, which is disposed on the substrate, and a reflector which is configured to extend from the cover unit inside to the upper substrate, whereby a light generated by the light source illuminates an area below a bottom side of the substrate. | 07-23-2015 |
20150211691 | LED ILLUMINATION APPARATUS - An LED illumination apparatus according to an exemplary embodiment of the present invention includes a substrate, a light source disposed on the substrate, a cover unit, wherein the cover unit is configured to cover the light source, which is disposed on the substrate, and a reflector which is configured to extend from the cover unit inside to the upper substrate, whereby a light generated by the light source illuminates an area below a bottom side of the substrate. | 07-30-2015 |
20150211692 | LED ILLUMINATION APPARATUS - An LED illumination apparatus according to an exemplary embodiment of the present invention includes a substrate, a light source disposed on the substrate, a cover unit, wherein the cover unit is configured to cover the light source, which is disposed on the substrate, and a reflector which is configured to extend from the cover unit inside to the upper substrate, whereby a light generated by the light source illuminates an area below a bottom side of the substrate. | 07-30-2015 |
20150354757 | LED LAMP - The present invention relates to an LED lamp having improved directivity, which includes: a substrate having light emitting sources mounted on the front surface thereof; an inner cover, which is disposed to cover the substrate and a space to the front of the substrate and which includes a penetration area allowing the penetration of light and a reflection area reflecting light, so that a part of the light emitted from the light emitting sources is reflected by the reflection area and directed toward the sides or the back of the substrate; and an outer cover which is disposed to cover the inner cover and a space to the outside of the inner cover and which allows light to penetrate therethrough. | 12-10-2015 |
Patent application number | Description | Published |
20150069444 | LIGHT EMITTING DIODE - A light emitting diode and a method of fabricating the same, the light emitting diode including a substrate, a semiconductor layer formed on one surface of the substrate, and an anti-reflection element formed on the other surface of the substrate and including a nano-pattern. The anti-reflection element is interposed between the substrate and air. | 03-12-2015 |
20150084084 | LIGHT EMITTING DIODE AND LED MODULE HAVING THE SAME - Disclosed are an LED and an LED module. The LED includes: a first conductivity type semiconductor layer; a mesa disposed over the first conductivity type semiconductor layer and including an active layer and a second conductivity type semiconductor layer; a first ohmic-contact structure in contact with the first conductivity type semiconductor layer; a second ohmic-contact structure in contact with the second conductivity type semiconductor layer; a lower insulating layer at least partially covering the mesa and the first conductivity type semiconductor layer and disposed to form a first opening part at least partially exposing the first ohmic-contact structure and a second opening part at least partially exposing the second ohmic-contact structure; and a current distributing layer connected to the first ohmic-contact structure at least partially exposed by the first opening part and disposed to form a third opening part at least partially exposing the second opening part. | 03-26-2015 |
20150084085 | LIGHT EMITTING DEVICE HAVING WIDE BEAM ANGLE AND METHOD OF FABRICATING THE SAME - A light emitting device having a wide beam angle and a method of fabricating the same. The light emitting device includes a light emitting structure, a substrate disposed on the light emitting structure, and an anti-reflection layer covering side surfaces of the light emitting structure and the substrate, and at least a portion of an upper surface of the substrate is exposed. | 03-26-2015 |
20150108525 | LIGHT EMITTING DIODE FOR SURFACE MOUNT TECHNOLOGY, METHOD OF MANUFACTURING THE SAME, AND METHOD OF MANUFACTURING LIGHT EMITTING DIODE MODULE - Provided are a light emitting diode (LED) in which a conductive barrier layer surrounding a reflective metal layer is defined by a protective insulating layer, and a method of manufacturing the same. A reflection pattern including a reflective metal layer and a conductive barrier layer is formed on an emission structure in which a first semiconductor layer, an active layer, and a second semiconductor layer are formed. The conductive barrier layer prevents diffusion of a reflective metal layer and extends to a protective insulating layer recessed under a photoresist pattern having an overhang structure during a forming process. Accordingly, a phenomenon where the conductive barrier layer is in contact with sidewalls of the photoresist pattern having an over-hang structure and the reflective metal layer forms points is prevented. Thus, LED modules having various shapes may be manufactured. | 04-23-2015 |
20150108528 | LIGHT EMITTING DIODE MODULE FOR SURFACE MOUNT TECHNOLOGY AND METHOD OF MANUFACTURING THE SAME - Provided is a light emitting diode (LED) in which a side surface of a reflective metal layer has a predetermined angle, and occurrence of cracks in a conductive barrier layer formed on the reflective metal layer can be prevented. Also, an LED module using LEDs is disclosed. A reflection pattern electrically connected to a second semiconductor layer is partially exposed by patterning a first insulating layer. Accordingly, a first pad is formed through the partially opened first pad region. Also, a conductive reflection layer electrically connected to a first semiconductor layer forms a second pad region formed by patterning a second insulating layer. A second pad is formed on the second pad region. | 04-23-2015 |
20150200230 | WAFER LEVEL LIGHT-EMITTING DIODE ARRAY AND METHOD FOR MANUFACTURING SAME - Disclosed are a light emitting diode array on a wafer level and a method of forming the same. The light emitting diode array includes a growth substrate; a plurality of light emitting diodes arranged on the substrate, wherein each of the plurality of light emitting diodes has a first semiconductor layer, an active layer and a second semiconductor layer; and a plurality of upper electrodes arranged on the plurality of light emitting diodes and formed of an identical material, wherein each of the plurality of upper electrodes is electrically connected to the first semiconductor layer of a respective one of the light emitting diodes. At least one of the upper electrodes is electrically connected to the second semiconductor layer of an adjacent one of the light emitting diodes, and another of the upper electrodes is insulated from the second semiconductor layer of an adjacent one of the light emitting diodes. Accordingly, it is possible to provide a light emitting diode array that can be driven under at a high voltage and simplify a forming process thereof. | 07-16-2015 |
20150214440 | LIGHT EMITTING DIODE FOR SURFACE MOUNT TECHNOLOGY, METHOD OF MANUFACTURING THE SAME, AND METHOD OF MANUFACTURING LIGHT EMITTING DIODE MODULE - Provided are a light emitting diode (LED) in which a conductive barrier layer surrounding a reflective metal layer is defined by a protective insulating layer, and a method of manufacturing the same. A reflection pattern including a reflective metal layer and a conductive barrier layer is formed on an emission structure in which a first semiconductor layer, an active layer, and a second semiconductor layer are formed. The conductive barrier layer prevents diffusion of a reflective metal layer and extends to a protective insulating layer recessed under a photoresist pattern having an overhang structure during a forming process. Accordingly, a phenomenon where the conductive barrier layer is in contact with sidewalls of the photoresist pattern having an over-hang structure and the reflective metal layer forms points is prevented. Thus, LED modules having various shapes may be manufactured. | 07-30-2015 |
20150255504 | WAFER LEVEL LIGHT-EMITTING DIODE ARRAY - A light emitting diode array is provide to include: a substrate; light emitting diodes positioned over the substrate, each including a first semiconductor layer, an active layer, and a second semiconductor layer, wherein each light emitting diode is disposed to form a first via hole structure exposing a portion of the corresponding first semiconductor layer; lower electrodes disposed over the second semiconductor layer; a first interlayer insulating layer disposed over the lower electrodes and configured to expose the portion of the first semiconductor layer of corresponding light emitting diodes; upper electrodes electrically connected to the first semiconductor layer through the first via hole structure, wherein the first via hole structure is disposed in parallel with one side of the corresponding second semiconductor layer and the first interlayer insulating layer is disposed to form a second via hole structure exposing a portion of the lower electrodes. | 09-10-2015 |
20150270442 | LIGHT-EMITTING DIODE AND APPLICATION THEREFOR - A light-emitting diode is provided to include: a transparent substrate having a first surface, a second surface, and a side surface; a first conductive semiconductor layer positioned on the first surface of the transparent substrate; a second conductive semiconductor layer positioned on the first conductive semiconductor layer; an active layer positioned between the first conductive semiconductor layer and the second conductive semiconductor layer; a first pad electrically connected to the first conductive semiconductor layer; and a second pad electrically connected to the second conductive semiconductor layer, wherein the transparent substrate is configured to discharge light generated by the active layer through the second surface of the transparent substrate, and the light-emitting diode has a beam angle of at least 140 degrees or more. Accordingly, a light-emitting diode suitable for a backlight unit or a surface lighting apparatus can be provided. | 09-24-2015 |
20150280086 | WAFER LEVEL LIGHT-EMITTING DIODE ARRAY - A wafer level light-emitting diode (LED) array includes: a growth substrate; a plurality of LEDs arranged over the substrate, each including a first semiconductor layer, an activation layer, and a second semiconductor layer; a plurality of upper electrodes formed from a common material and electrically connected to the first semiconductor layers of the corresponding LEDs; and first and second pads arranged over the upper electrodes. The LEDs are connected in series by the upper electrodes, the first pad is electrically connected to an input LED from among the LEDs connected in series, and the second pad is electrically connected to an output LED from among the LEDs connected in series. Accordingly, a flip chip-type LED array can be provided which can be driven with a high voltage. | 10-01-2015 |
20150287762 | LIGHT-EMITTING DIODE AND APPLICATION THEREFOR - A light-emitting diode is provided to include: a transparent substrate having a first surface, a second surface, and a side surface; a first conductive semiconductor layer positioned on the first surface of the transparent substrate; a second conductive semiconductor layer positioned on the first conductive semiconductor layer; an active layer positioned between the first conductive semiconductor layer and the second conductive semiconductor layer; a first pad electrically connected to the first conductive semiconductor layer; and a second pad electrically connected to the second conductive semiconductor layer, wherein the transparent substrate is configured to discharge light generated by the active layer through the second surface of the transparent substrate, and the light-emitting diode has a beam angle of at least 140 degrees or more. Accordingly, a light-emitting diode suitable for a backlight unit or a surface lighting apparatus can be provided. | 10-08-2015 |
20150287888 | LIGHT-EMITTING DIODE AND APPLICATION THEREFOR - A light-emitting diode is provided to include: a transparent substrate having a first surface, a second surface, and a side surface; a first conductive semiconductor layer positioned on the first surface of the transparent substrate; a second conductive semiconductor layer positioned on the first conductive semiconductor layer; an active layer positioned between the first conductive semiconductor layer and the second conductive semiconductor layer; a first pad electrically connected to the first conductive semiconductor layer; and a second pad electrically connected to the second conductive semiconductor layer, wherein the transparent substrate is configured to discharge light generated by the active layer through the second surface of the transparent substrate, and the light-emitting diode has a beam angle of at least 140 degrees or more. Accordingly, a light-emitting diode suitable for a backlight unit or a surface lighting apparatus can be provided. | 10-08-2015 |
20150295138 | LIGHT EMITTING DIODE MODULE FOR SURFACE MOUNT TECHNOLOGY AND METHOD OF MANUFACTURING THE SAME - An LED is provided to include: a first conductive type semiconductor layer; an active layer positioned over the first conductive type semiconductor layer; a second conductive type semiconductor layer positioned over the active layer; and a defect blocking layer comprising a masking region to cover at least a part of the top surface of the second conductive semiconductor layer and an opening region to partially expose the top surface of the second conductive type semiconductor layer, wherein the active layer and the second conductive type semiconductor layer are disposed to expose a part of the first conductive type semiconductor layer, and wherein the defect blocking layer comprises a first region and a second region surrounding the first region, and a ratio of the area of the opening region to the area of the masking region in the first region is different from a ratio of the area of the opening region to the area of the masking region in the second region. | 10-15-2015 |
20150325752 | LIGHT EMITTING DEVICE HAVING WIDE BEAM ANGLE AND METHOD OF FABRICATING THE SAME - A light emitting device having a wide beam angle and a method of fabricating the same. The light emitting device includes a light emitting structure, a substrate disposed on the light emitting structure, and an anti-reflection layer covering side surfaces of the light emitting structure and the substrate, and at least a portion of an upper surface of the substrate is exposed. | 11-12-2015 |
20150380620 | LIGHT EMITTING DIODE, METHOD OF FABRICATING THE SAME AND LED MODULE HAVING THE SAME - Disclosed are a light emitting diode (LED), an LED module including the same, and a method of fabricating the same. The light emitting diode includes a first conductive-type semiconductor layer; a second conductive-type semiconductor layer; an active layer interposed between the first conductive-type semiconductor layer and the second conductive-type semiconductor layer; a first electrode pad region electrically connected to the first conductive-type semiconductor layer; a second electrode pad region electrically connected to the second conductive-type semiconductor layer; and a spark gap formed between a first leading end electrically connected to the first electrode pad region and a second leading end electrically connected to the second electrode pad region. The spark gap can achieve electrostatic discharge protection of the light emitting diode. | 12-31-2015 |
20150380621 | LIGHT-EMITTING DIODE MODULE HAVING LIGHT-EMITTING DIODE JOINED THROUGH SOLDER PASTE AND LIGHT-EMITTING DIODE - Disclosed are a light emitting diode and a light emitting diode module. The light emitting diode module includes a printed circuit board and a light emitting diode joined thereto through a solder paste. The light emitting diode includes a first electrode pad electrically connected to a first conductive type semiconductor layer and a second electrode pad connected to a second conductive type semiconductor layer, wherein each of the first electrode pad and the second electrode pad includes at least five pairs of Ti/Ni layers or at least five pairs of Ti/Cr layers and the uppermost layer of Au. Thus a metal element such as Sn in the solder paste is prevented from diffusion so as to provide a reliable light emitting diode module. | 12-31-2015 |
20160072011 | LIGHT EMITTING DIODE, METHOD OF FABRICATING THE SAME AND LED MODULE HAVING THE SAME - Disclosed are a light emitting diode (LED), an LED module including the same, and a method of fabricating the same. The light emitting diode includes a first conductive-type semiconductor layer; a second conductive-type semiconductor layer; an active layer interposed between the first conductive-type semiconductor layer and the second conductive-type semiconductor layer; a first electrode pad region electrically connected to the first conductive-type semiconductor layer; a second electrode pad region electrically connected to the second conductive-type semiconductor layer; and a spark gap formed between a first leading end electrically connected to the first electrode pad region and a second leading end electrically connected to the second electrode pad region. The spark gap can achieve electrostatic discharge protection of the light emitting diode. | 03-10-2016 |
20160111600 | LIGHT EMITTING DIODE, METHOD OF FABRICATING THE SAME AND LED MODULE HAVING THE SAME - A light emitting diode is provided to include a first conductive-type semiconductor layer; a mesa including a second conductive-type semiconductor layer disposed on the first conductive-type semiconductor layer and an active layer interposed between the first and the second conductive-type semiconductor layers; and a first electrode disposed on the mesa, wherein the first conductive-type semiconductor layer includes a first contact region disposed around the mesa along an outer periphery of the first conductive-type semiconductor layer; and a second contact region at least partially surrounded by the mesa, the first electrode is electrically connected to at least a portion of the first contact region and at least a portion of the second contact region, and a linewidth of an adjoining region between the first contact region and the first electrode is greater than the linewidth of an adjoining region between the second contact region and the first electrode. | 04-21-2016 |