公开(公告)号：US20160322001A1

公开(公告)日：2016-11-03

申请号：US15140094

申请日：2016-04-27

Applicant: LG Display Co., Ltd.

Inventor： Osung DO ,  Kyoungdon WOO ,  Seokhyun HONG

IPC: G09G3/3291 ,  G09G3/20

CPC classification number: G09G3/3291 ,  G09G3/2007 ,  G09G2300/0452 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/10

Abstract: A four-primary-color organic light emitting display comprises: a display panel where a plurality of first-color pixels, second-color pixels, third-color pixels, and fourth-color pixels are disposed; and a data drive circuit that has a single, digital-to-analog converter to generate first- to fourth-color data voltages and to apply the first-color data voltage to the first-color pixels, the second-color data voltage to the second-color pixels, the third-color data voltage to the third-color pixels, and the fourth-color data voltage to the fourth-color pixels. Herein, the maximum grayscale voltages for the first- to fourth-color data voltages are adjusted to be different on a single gamma graph defined as the input grayscale versus output voltage.

Abstract translation: 四原色有机发光显示器包括：显示面板，其中设置有多个第一颜色像素，第二彩色像​​素，第三颜色像素和第四颜色像素; 以及数据驱动电路，其具有单个数模转换器以产生第一至第四颜色数据电压并将第一颜色数据电压施加到第一颜色像素，将第二颜色数据电压施加到第一颜色数据电压 第二颜色像素，第三颜色数据电压到第三颜色像素，以及第四颜色数据电压到第四颜色像素。 这里，将第一至第四色数据电压的最大灰度电压调整为在被定义为输入灰度与输出电压的单个伽马图上不同。

公开(公告)号：US20180033366A1

公开(公告)日：2018-02-01

申请号：US15655581

申请日：2017-07-20

Applicant: LG Display Co., Ltd.

Inventor： Jaeik YOO ,  Myunggi LIM ,  Osung DO

IPC: G09G3/3233 ,  G09G3/3275 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2003 ,  G09G3/3275 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2320/0219 ,  G09G2320/0238 ,  G09G2320/029

Abstract: The sensing method for an organic light-emitting display comprises: defining a pixel group comprising a reference pixel and two or more valid pixels, among a plurality of pixels arranged on a horizontal line; obtaining a black level current sensing value by applying a black level data voltage to the reference pixel; obtaining a current sensing value for a given gray level by applying a data voltage for the given gray level higher than the black level to each of the valid pixels; and obtaining a pixel current sensing value by subtracting the black level current sensing value from the current sensing value for the given gray level to eliminate common noise.

公开(公告)号：US20190035331A1

公开(公告)日：2019-01-31

申请号：US15858917

申请日：2017-12-29

Applicant: LG Display Co., Ltd.

Inventor： Osung DO ,  Kyoungdon WOO ,  Hyuckjun KIM ,  Jaeyoon BAE

IPC: G09G3/3233 ,  G09G3/34

CPC classification number: G09G3/3233 ,  G09G3/3413 ,  G09G2300/0452 ,  G09G2300/0842 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/0693

Abstract: The present disclosure relates to an electroluminescent display device and a driving method of the same. The electroluminescent display device comprises a display panel, including a plurality of data lines, a plurality of sensing lines, a plurality of gate lines, and pixels which are arranged in matrix at each intersection between those lines to form a plurality of display lines; a sensing circuit, for sensing a pixel current in the pixels, integrating the pixel current to obtain a sensing voltage, and generating a sensing data based on the sensing voltage during a sensing operation period; and a compensation unit for calculating a compensation value for electrical characteristics of the pixels based on the sensing data.

公开(公告)号：US20180122294A1

公开(公告)日：2018-05-03

申请号：US15783847

申请日：2017-10-13

Applicant: LG Display Co., Ltd.

Inventor： Osung DO ,  Juyoung NOH

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/3275 ,  G09G5/008 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/02 ,  G09G2370/08 ,  G09G2370/10

Abstract: The display device according to an embodiment of the present disclosure comprises a display panel; a source drive IC configured to provide data voltages to the pixels, convert signals indicating driving characteristics of the pixels into sensing data and output the sensing data; and a timing controller configured to transmit a control data packet and a video data packet to the source drive IC through first and second wire pairs and receive the sensing data from the source drive IC through the second wire pair, wherein the timing controller is configured to load lock information indicating whether a clock extracted from a signal provided from the source drive IC through the second wire pair is locked or not into the control data packet and provide the control data packet to the source drive IC through the first wire pair, when receiving data from the source drive IC.

公开(公告)号：US20180114815A1

公开(公告)日：2018-04-26

申请号：US15792285

申请日：2017-10-24

Applicant: LG DISPLAY CO., LTD.

Inventor： Taeyoung LEE ,  Changwoo LEE ,  Osung DO

IPC: H01L27/32 ,  H01L51/50 ,  G09F9/30 ,  H05B33/22 ,  H05B33/28 ,  H05B33/02 ,  G06K9/00 ,  H01L51/52 ,  H01L51/56

CPC classification number: H01L27/32 ,  G06K9/00013 ,  G06K9/0004 ,  G09F9/30 ,  H01L27/3244 ,  H01L51/0031 ,  H01L51/50 ,  H01L51/5203 ,  H01L51/56 ,  H05B33/02 ,  H05B33/22 ,  H05B33/28

Abstract: An organic light emitting display device in an embodiment of the present invention comprises a display panel equipped with a plurality of pixels each including an OLED and a driving TFT for driving the OLED and a sensing circuit connected to pixels through a sensing line and detecting driving characteristics of a corresponding pixel. The sensing circuit may comprise a plural sensing units including an integrator for integrating currents respectively flowing two adjacent sensing lines connected to inverting and non-inverting input terminals of a fully differential amplifier, a sampling unit for respectively sampling two integral outputs of the integrator and a scaler for regulating an operating range of outputs of the sampling unit, a differential amplifier for differentially amplifying one or more outputs of the scaler, and an ADC for converting an output of the differential amplifier into a digital sensing value.

公开(公告)号：US20160078834A1

公开(公告)日：2016-03-17

申请号：US14857411

申请日：2015-09-17

Applicant: LG DISPLAY CO., LTD.

Inventor： Seokhyun HONG ,  Chulwon LEE ,  Juyoung NOH ,  Osung DO

IPC: G09G3/36 ,  G11C19/00 ,  G09G3/32

CPC classification number: G11C19/00 ,  G09G3/20 ,  G09G3/3266 ,  G09G3/3674 ,  G09G2310/0218 ,  G09G2310/0267 ,  G09G2310/0286 ,  G11C19/287

Abstract: A gate driving circuit and a display device using the same are discussed. The gate driving circuit according to an embodiment includes a first shift register configured to sequentially shift a gate start pulse in response to a gate shift clock and output a gate pulse shifted on a per block basis, each block including a plurality of gate lines, a second shift register configured to sequentially shift the gate start pulse in response to the gate shift clock and output a gate pulse shifted on a per gate line basis, and a controller configured to supply the gate shift clock to one of the first and second shift registers.

Abstract translation: 讨论了栅极驱动电路和使用其的显示装置。 根据实施例的栅极驱动电路包括第一移位寄存器，其被配置为响应于栅极移位时钟顺序移位栅极起始脉冲，并输出以每个块为基准移位的栅极脉冲，每个块包括多个栅极线， 第二移位寄存器，其被配置为响应于所述栅极移位时钟顺序移位所述栅极起始脉冲，并输出在每个栅极线上移位的栅极脉冲，以及控制器，被配置为将所述栅极移位时钟提供给所述第一和第二移位寄存器 。