公开(公告)号：US11087698B2

公开(公告)日：2021-08-10

申请号：US16922728

申请日：2020-07-07

Applicant: LG Display Co., Ltd.

Inventor： Donggun Lee ,  Kyujin Kim

IPC: G09G3/3291 ,  G09G3/3266 ,  G09G3/3233

Abstract: A display device is proposed, the display device including a display panel having a plurality of pixels; a data driving circuit converting pixel data to a data voltage based on a gamma compensation voltage to supply the same to the plurality of pixels through a plurality of data lines; a gate driving circuit supplying a scan signal through a gate line connected to pixels of each horizontal line of the display panel; a power supply unit supplying a pixel driving voltage to the plurality of pixels through a power line; and a gamma reference voltage adjusting unit adjusting a range of the gamma compensation voltage based on a pixel driving voltage measurement value measured in synchronization with the scan signal at a plurality of positions on the display panel.

公开(公告)号：US10600369B2

公开(公告)日：2020-03-24

申请号：US15835171

申请日：2017-12-07

Applicant: LG DISPLAY CO., LTD.

Inventor： Taehun Kim ,  Kitae Kwon ,  Kyujin Kim ,  Jiah Kim

IPC: G09G3/3291 ,  G09G3/3233 ,  G09G3/3258

Abstract: The disclosure relates to data driver and organic light emitting display device. The data driver includes: an input unit configured to receive an input data; a compensation data generator configured to generate a compensation data by applying a compensation value to the input data; a converter unit configured to convert the input data into an image data voltage and to convert the compensation data into a compensation data voltage; and an output unit configured to separately output the image data voltage and the compensation data voltage to a data line of the organic light emitting display.

公开(公告)号：US10248239B2

公开(公告)日：2019-04-02

申请号：US15630182

申请日：2017-06-22

Applicant: LG Display Co., Ltd.

Inventor： Byeongseong So ,  Kyujin Kim ,  Taehun Kim ,  Seungjin Yoo

IPC: G06F3/041 ,  G02F1/1333 ,  G09G3/36 ,  G06F3/044 ,  G02F1/1343 ,  G09G3/20 ,  G11C19/28

Abstract: A touch sensor integrated type display device includes: a display panel including: pixels connected to data lines and gate lines and division-driven into a plurality of panel blocks, and a plurality of touch sensors connected to the pixels, a display driving circuit providing data of an input image to the pixels in multiple display periods divided from one frame period, and a touch sensing circuit driving the touch sensors and sensing a touch input in a touch sensing period allocated between the display periods of the frame period, adjacent panel blocks being division-driven in the display periods that are separated from each other with the touch sensing period, in which the touch sensors are driven, interposed therebetween, the display driving circuit including a shift register: shifting a gate pulse in accordance with a shift clock timing, and sequentially supplying the gate pulse to the gate lines.

公开(公告)号：US10474265B2

公开(公告)日：2019-11-12

申请号：US15712423

申请日：2017-09-22

Applicant: LG Display Co., Ltd.

Inventor： Byeongseong So ,  Kitae Kwon ,  Kyujin Kim ,  Seungwan Cho

IPC: G06F3/041 ,  G02F1/1333 ,  G02F1/1343 ,  G09G3/36 ,  G11C19/28

Abstract: A touch sensor integrated type display device includes: a display panel including first and second panel blocks (PBs), each including a pixel array with embedded touch sensors, a display driving circuit providing image data to pixels of the first and second PBs during a display period, and a touch sensing circuit driving the touch sensors of the first and second PBs during a touch sensing period, the display driving circuit including a shift register sequentially providing gate pulses (GPs) to gate lines, the shift register including: a first stage group (SG) applying a GP to gate lines in the first PB, a bridge stage connected in cascade to a last stage of the first SG, and providing a first carry signal, and a second SG applying a GP to gate lines in the second PB, a first stage of the second SG operating in response to the first carry signal.

公开(公告)号：US11114034B2

公开(公告)日：2021-09-07

申请号：US16921251

申请日：2020-07-06

Applicant: LG Display Co., Ltd.

Inventor： Donggun Lee ,  Kyujin Kim ,  Taehun Kim ,  Seungjin Yoo

IPC: G09G3/3258 ,  G09G3/3291 ,  G09G3/3266

Abstract: A display device is proposed, the display device including a display panel and a driving circuit, and pixels included in the display panel includes a driving transistor, a light emitting element, a capacitor, and first to sixth switching transistors T1 to T6. T1 senses threshold voltage of the driving transistor, the capacitor stores data voltage and a threshold voltage in both electrodes, T2 applies data voltage to the capacitor, T3 initializes the storage capacitor to reference voltage, and T4 initialize the light emitting element to reference voltage, T5 controls current flow between the driving transistor and the light emitting element, and T6 connects both electrodes of the capacitor. The driving circuit divides one frame into an initialization period, a program period, and a light emission period to drive a pixel, and stops light emission of the light emitting device and make equal voltage across the capacitor, in the initialization period.

公开(公告)号：US10475386B2

公开(公告)日：2019-11-12

申请号：US15856945

申请日：2017-12-28

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyujin Kim

IPC: G09G3/30 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3233 ,  G09G3/3275

Abstract: The disclosure relates to display panel and electroluminescence display using the same. The display panel includes: a sub-pixel, which comprises a light-emitting element and a driving element for driving the light-emitting element, the light-emitting element emitting light by a current in the driving element during a driving phase; and a power switching circuit configured to supply a first driving voltage to the sub-pixel during the driving phase in an active period and a blanking interval, and supply a second driving voltage to the sub-pixel during a data writing phase of the active period and during resetting, sensing, and data writing phases of the blanking interval.

公开(公告)号：US10303019B2

公开(公告)日：2019-05-28

申请号：US15605347

申请日：2017-05-25

Applicant: LG Display Co., Ltd.

Inventor： Sangjin Nam ,  Ooksang Yoo ,  Kyujin Kim ,  Seungjin Yoo

IPC: G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1347 ,  G02F1/13357

Abstract: A light valve panel and a liquid crystal display using the same are discussed. The light valve panel according to an aspect includes a liquid crystal layer, a first electrode including a block corresponding one-to-one with a light valve data line, and a second electrode facing the first electrode with the liquid crystal layer interposed therebetween. An angle between a vertical edge of the block and the light valve data line is greater than 0° and less than 90°. The liquid crystal display device according to another aspect includes a display panel, a backlight unit, and a light valve panel.

公开(公告)号：US09910329B2

公开(公告)日：2018-03-06

申请号：US14839467

申请日：2015-08-28

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyujin Kim ,  Ooksang Yoo ,  Taehun Kim

IPC: G02F1/1368 ,  G02F1/1362 ,  G09G3/36

CPC classification number: G02F1/136213 ,  G02F1/136286 ,  G02F1/1368 ,  G09G3/3614 ,  G09G3/3655 ,  G09G3/3688 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2300/0876 ,  G09G2310/0297 ,  G09G2310/066 ,  G09G2370/08

Abstract: A liquid crystal display (LCD) device according to an embodiment includes a liquid crystal panel in which a gate line, a dummy data line, and a data line are disposed, a timing controller configured to generate compensation data, a data driver configured to generate a compensation data voltage on the basis of the compensation data, provide the generated compensation data voltage to the dummy data line, and provide a data voltage for displaying an image to the data line, a common electrode configured to provide a common voltage to pixels of the liquid crystal panel, and a compensation capacitor positioned outside of a pixel array of the liquid crystal panel and charged upon receiving the compensation data voltage.

公开(公告)号：US11289024B2

公开(公告)日：2022-03-29

申请号：US16921274

申请日：2020-07-06

Applicant: LG Display Co., Ltd.

Inventor： Kyujin Kim ,  Taehun Kim ,  Donggun Lee

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

Abstract: A display device includes: a display panel provided with multiple pixels; a driving circuit; and a power generator, wherein each of the pixels includes: a first switching transistor of which a gate electrode is connected to the gate line, of which a first electrode is connected to the data line, and of which a second electrode is connected to a first node; a driving transistor of which a gate electrode is connected to a reference line and thus receives a reference voltage supplied from the power generator, of which a first electrode is connected to the first node, and of which a second electrode is connected to a second node; and a light-emitting device of which an anode electrode is connected to the second node, and of which a cathode electrode is connected to a power line through which the power generator supplies a low-potential power supply voltage.

公开(公告)号：US11049460B2

公开(公告)日：2021-06-29

申请号：US16922728

申请日：2020-07-07

Applicant: LG Display Co., Ltd.

Inventor： Donggun Lee ,  Kyujin Kim

IPC: G09G3/3291 ,  G09G3/3266 ,  G09G3/3233

Abstract: A display device is proposed, the display device including a display panel having a plurality of pixels; a data driving circuit converting pixel data to a data voltage based on a gamma compensation voltage to supply the same to the plurality of pixels through a plurality of data lines; a gate driving circuit supplying a scan signal through a gate line connected to pixels of each horizontal line of the display panel; a power supply unit supplying a pixel driving voltage to the plurality of pixels through a power line; and a gamma reference voltage adjusting unit adjusting a range of the gamma compensation voltage based on a pixel driving voltage measurement value measured in synchronization with the scan signal at a plurality of positions on the display panel.