公开(公告)号：US20190206325A1

公开(公告)日：2019-07-04

申请号：US16226582

申请日：2018-12-19

申请人： LG DISPLAY CO., LTD.

发明人： Kyung-Rok Kim ,  Taegung Kim

IPC分类号： G09G3/3241 ,  G09G3/32 ,  G09G3/3275

CPC分类号： G09G3/2096 ,  G09G3/3225 ,  G09G3/3275 ,  G09G2300/0857 ,  G09G2300/0861

摘要： Disclosed is a display apparatus having a simplified configuration. The display apparatus includes a substrate including a display area including a plurality of pixel areas defined in a first direction and a second direction intersecting the first direction and a non-display area surrounding the display area, a plurality of pixels each including a pixel driving chip provided in a corresponding pixel area of the plurality of pixel areas of the substrate and a light emission part connected to the pixel driving chip, a plurality of pixel data transfer lines sequentially transferring digital pixel data to pixel driving chips of pixels arranged in the first direction, and a plurality of clock transfer lines sequentially transferring a reference clock to the pixel driving chips of the pixels arranged in the first direction. The pixel driving chip allows the light emission part to emit light, based on the digital pixel data and the reference clock input thereto.

公开(公告)号：US09830854B2

公开(公告)日：2017-11-28

申请号：US15189403

申请日：2016-06-22

申请人： LG Display Co., Ltd.

发明人： Taegung Kim ,  Junghyeon Kim

IPC分类号： G09G3/3225 ,  G09G3/3233

CPC分类号： G09G3/3225 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2310/0289 ,  G09G2320/0233 ,  G09G2320/0252 ,  G09G2320/0295 ,  G09G2320/043

摘要： A device for sensing a threshold voltage of a driving TFT in an organic light emitting display includes a data drive circuit and a timing controller. The data drive circuit applies a data voltage to a gate node of the driving TFT during a first programming period, determines a source node voltage of the driving TFT as a first sensing voltage during a first sensing period in which a gate-source voltage is constant and higher than the threshold voltage, applies another data voltage to the gate node during a second programming period, and determines the source node voltage as a second sensing voltage during a second sensing period in which the gate-source voltage is constant and higher than the threshold voltage. The timing controller calculates a ratio between the first and second sensing voltages, and obtains a change in the threshold voltage using a change in the ratio.

公开(公告)号：US11011592B2

公开(公告)日：2021-05-18

申请号：US16223051

申请日：2018-12-17

申请人： LG Display Co., Ltd.

发明人： Kyung-Rok Kim ,  Taegung Kim ,  SeungTae Kim

IPC分类号： H01L27/32 ,  G09G3/3291 ,  G09G3/32

摘要： Disclosed is a light emitting display apparatus. The light emitting display apparatus includes a substrate including a display area including a plurality of pixel areas and a non-display area surrounding the display area, first to nth gate lines passing through the display area of the substrate, first to mth data lines passing through the display area of the substrate, first to mth pixel driving power lines passing through the display area of the substrate, a plurality of pixels provided in at least one pixel area of the substrate and connected to an adjacent gate line, an adjacent data line, and an adjacent pixel driving power line, and at least one data buffer chip provided in the display area of the substrate and connected to a corresponding data line of the first to mth data lines. Accordingly, a constant data voltage charging rate of each of the pixels is maintained regardless of a distance between a data driving circuit and each of the pixels.

公开(公告)号：US10185431B2

公开(公告)日：2019-01-22

申请号：US15229033

申请日：2016-08-04

申请人： LG Display Co., Ltd.

发明人： Taegung Kim ,  Jongmin Lee ,  Jinhan Yoon

IPC分类号： G06F3/041 ,  G09G3/3225 ,  G09G3/3266 ,  G02F1/1333 ,  G06F3/044 ,  G09G3/3233

摘要： A touch sensor integrated display device and a method for driving the same are disclosed. The touch sensor integrated display device includes a display panel, each pixel of a pixel array including an OLED and a driving TFT applying a source-drain current to the OLED, the pixel array being divided into touch blocks, each touch block including pixels and a sensing target pixel line coupled to a subset of the pixels, and a panel drive circuit configured to, in a touch sensing period, supply a scan control signal and a sensing control signal to the sensing target pixel line corresponding to a touch block, set a gate-source voltage of the driving TFT coupled to the sensing target pixel line to turn on the driving TFT, and output a sensing value by sensing a change in the source-drain current of the driving TFT caused by a touch input.

公开(公告)号：US09685119B2

公开(公告)日：2017-06-20

申请号：US14586567

申请日：2014-12-30

申请人： LG DISPLAY CO., LTD.

发明人： Taegung Kim ,  Junghyeon Kim ,  Jinhan Yoon

IPC分类号： G09G3/30 ,  G09G3/3291 ,  G09G3/3275 ,  G09G3/00 ,  G09G3/3258 ,  G09G3/3233 ,  G09G3/3225

CPC分类号： G09G3/3291 ,  G09G3/006 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2300/0828 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0223 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/045 ,  G09G2330/12

摘要： An organic light emitting display is provided which offers shorter sensing time and higher sensing accuracy when sensing variations in electrical characteristics of a driving element. The organic light emitting display can include: a display panel with a plurality of pixels; a gate driving circuit that generates a sensing gate pulse corresponding to one line sensing ON time in a sensing operation and sequentially supplies the same to gate lines in a line sequential manner; a data driving circuit comprising a plurality of current integrators that perform an integration of the source-drain current of the driving TFT of each pixel input through the sensing lines and an ADC that sequentially digitizes the output of the current integrators to output digital sensed values; and a timing controller that controls the operations of the gate driving circuit and data driving circuit.

公开(公告)号：US20170031485A1

公开(公告)日：2017-02-02

申请号：US14981486

申请日：2015-12-28

申请人： LG Display Co., Ltd.

发明人： Taegung Kim ,  Sangho Yu ,  Hyuckjun Kim

IPC分类号： G06F3/041 ,  G06F3/044 ,  G09G3/32

摘要： A disclosed touch sensor integrated display device includes a display panel; and a data drive circuit configured to set a gate-source voltage to turn on a driving TFT in the display panel by applying a data voltage for touch sensing to a gate node of the driving TFT through a data line and a reference voltage to a source node of the driving TFT through a sensing line, during a reset period based on a scan control signal and a sensing control signal, and to output a sensing value by sensing a change in a source-drain current of the driving TFT caused by touch input, during a sensing period subsequent to the reset period.

摘要翻译： 所公开的触摸传感器集成显示装置包括显示面板; 以及数据驱动电路，其被配置为通过将数据线和参考电压施加到驱动TFT的栅极节点，将源极电压设置为使得显示面板中的驱动TFT接通，以将触摸感测的数据电压施加到源极 在基于扫描控制信号和感测控制信号的复位期间，通过感测线路驱动TFT的节点，并且通过感测由触摸输入引起的驱动TFT的源极 - 漏极电流的变化来输出感测值 ，在复位周期之后的感测期间。

公开(公告)号：US20240257705A1

公开(公告)日：2024-08-01

申请号：US18498399

申请日：2023-10-31

申请人： LG Display Co., Ltd.

发明人： Minhoi Kim ,  Taegung Kim

IPC分类号： G09G3/20 ,  G09G3/3233

CPC分类号： G09G3/2096 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0243 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/045

摘要： A display device is disclosed that includes a display panel having pixels configured to display images during a first frame, a second frame, and a third frame, each of the first frame, the second frame, and the third frame including an active period and a blanking period; a counting circuit configured to count a duration of the blanking period of the first frame after the active period of the first frame; a comparison circuit configured to compare the counted duration of the blanking period of the first frame with a threshold time required for sensing at least one pixel or a threshold time required to prepare for driving the pixels during the second frame; and a delay decision circuit configured to determine whether to increase a duration of the blanking period of the first frame based on the comparison.

公开(公告)号：US20240249662A1

公开(公告)日：2024-07-25

申请号：US18542257

申请日：2023-12-15

申请人： LG Display Co., Ltd.

发明人： Suncheol Noh ,  Taegung Kim ,  Junwoo Yun

IPC分类号： G09G3/20 ,  G09G3/3233

CPC分类号： G09G3/2096 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247

摘要： A display device includes a display panel including a plurality of pixels, the plurality of pixels driven during a first frame with a first driving frequency and a second frame with a second driving frequency, a frequency generation unit configured to generate first frequency information indicative of the first driving frequency of the first frame after an end of the first frame, a gain generation unit configured to receive the first frequency information indicative of the first driving frequency generated by the frequency generation unit and generate a first gain value for the second frame based on the first driving frequency of the first frame indicated in the received first frequency information, and a video data output unit configured to output video data generated based on the first gain value to a data driving unit during the second frame.

公开(公告)号：US20240221597A1

公开(公告)日：2024-07-04

申请号：US18502897

申请日：2023-11-06

申请人： LG Display Co., Ltd.

发明人： JaeYeong Go ,  Taegung Kim ,  DongJun You ,  HwakDong Park

IPC分类号： G09G3/20

CPC分类号： G09G3/2096 ,  G09G3/20 ,  G09G2310/0243 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2330/021 ,  G09G2340/0435 ,  G09G2360/02 ,  G09G2360/12

摘要： A display apparatus includes a display panel including a plurality of pixels; a timing controller generating image data, a data control signal, and a gate control signal, based on an input image signal and an input control signal; a data driver generating a data signal for an output image based on the image data and the data control signal and supplying the data signal to the pixels; a gate driver generating a gate signal based on the gate control signal and supplying the gate signal for the output image to the pixels. The timing controller detects a frame period corresponding to a frame rate of the input image and when the detected frame period is longer than the critical period, inserts a sub frame duration to output active data for image refresh after outputting active data of an output frame duration corresponding to the output image.

公开(公告)号：US20190206330A1

公开(公告)日：2019-07-04

申请号：US16226432

申请日：2018-12-19

申请人： LG DISPLAY CO., LTD.

发明人： Kyung-Rok Kim ,  Taegung Kim ,  Haejin Park ,  EunJi Park ,  Kimin Son

IPC分类号： G09G3/3266 ,  G09G3/32 ,  G09G3/3275 ,  G06F3/044 ,  H01L27/32

摘要： Disclosed is a display apparatus with a simplified configuration. The display apparatus may include gate lines passing through a display area of a substrate, data lines passing through the display area of the substrate, pixel driving power lines passing through the display area of the substrate, a plurality of pixels having a pixel driving chip mounted on at least one pixel area defined on the substrate and connected and connected to an adjacent gate line and data line and a light emission part connected to the pixel driving chip, a gate driving chip array part mounted in a non-display area of the substrate and connected to the gate lines, and a data driving chip array part mounted in the non-display area of the substrate and connected to the data lines.