公开(公告)号：US09030387B2

公开(公告)日：2015-05-12

申请号：US13725416

申请日：2012-12-21

Applicant: LG Display Co., Ltd.

Inventor： Ui-Taek Jeong ,  Na-Ri Kim ,  Ji-Eun Lee

IPC: G09G3/30 ,  G09G3/32

CPC classification number: G09G3/3225 ,  G09G3/3233 ,  G09G2320/0295

Abstract: Disclosed is a light emitting display device capable of minimizing deviation of current driving capability between driving switching devices of respective pixels, thereby achieving enhanced screen quality. A method of driving the light emitting display device includes sensing the threshold voltage and mobility of driving Thin Film Transistor (TFT) of each pixel through each data line or each power line using a first sensing voltage; correcting an error of the mobility between the driving TFTs by again sensing the mobility of the driving TFT of each pixel through each data line or each power line using a second voltage; and compensating for video data to be displayed on a display panel using the threshold voltage and the corrected mobility.

Abstract translation: 公开了一种发光显示装置，其能够使各像素的驱动开关装置之间的电流驱动能力的偏差最小化，从而实现增强的屏幕质量。 一种驱动发光显示装置的方法包括使用第一感测电压通过每条数据线或每条电力线检测每个像素的驱动薄膜晶体管（TFT）的阈值电压和迁移率; 通过使用第二电压再次感测通过每个数据线或每个电力线的每个像素的驱动TFT的迁移率来校正驱动TFT之间的迁移率的误差; 以及使用阈值电压和校正的移动性补偿要在显示面板上显示的视频数据。

公开(公告)号：US20140022289A1

公开(公告)日：2014-01-23

申请号：US13711789

申请日：2012-12-12

Applicant: LG DISPLAY CO., LTD.

Inventor： Ji-Eun Lee ,  Bum-Sik Kim ,  Seung-Tae Kim ,  Won-Kyu Ha ,  Kil-Hwan Oh

IPC: G09G3/32 ,  G09G5/10

CPC classification number: G09G3/3283 ,  G09G3/006 ,  G09G3/3233 ,  G09G3/3291 ,  G09G5/10 ,  G09G2310/0251 ,  G09G2320/043 ,  G09G2330/12

Abstract: The present invention relates to an organic light emitting diode display device capable of sensing driving current of each pixel with a simple configuration to compensate for a luminance deviation between pixels and a pixel current sensing method thereof. The organic light emitting diode display device includes a display panel including 2N (N being a natural number) pixels that share a reference line though which a reference signal is supplied and are respectively connected to 2N data lines through which data signals are applied, and a data driver for driving the 2N pixels sharing the reference line in a time division manner through the data lines, sensing currents of the time-division-driven 2N pixels as voltages through the shared reference line and outputting the sensed currents, in a sensing mode.

Abstract translation: 本发明涉及一种有机发光二极管显示装置，其能够以简单的配置来感测每个像素的驱动电流，以补偿像素之间的亮度偏差和其像素电流检测方法。 有机发光二极管显示装置包括：显示面板，其包括2N（N为自然数）像素，共享参考线，参考信号被提供，并且分别连接到2N数据线，数据信号通过该数据线施加， 数据驱动器，用于通过数据线以时分方式驱动共享参考线的2N个像素，通过共享参考线感测时分驱动的2N像素的电流作为电压，并以感测模式输出感测的电流。

公开(公告)号：US20130169699A1

公开(公告)日：2013-07-04

申请号：US13725416

申请日：2012-12-21

Applicant: LG DISPLAY CO., LTD.

Inventor： Ui-Taek Jeong ,  Na-Ri Kim ,  Ji-Eun Lee

IPC: G09G3/32

CPC classification number: G09G3/3225 ,  G09G3/3233 ,  G09G2320/0295

Abstract: Disclosed is a light emitting display device capable of minimizing deviation of current driving capability between driving switching devices of respective pixels, thereby achieving enhanced screen quality. A method of driving the light emitting display device includes sensing the threshold voltage and mobility of driving Thin Film Transistor (TFT) of each pixel through each data line or each power line using a first sensing voltage; correcting an error of the mobility between the driving TFTs by again sensing the mobility of the driving TFT of each pixel through each data line or each power line using a second voltage; and compensating for video data to be displayed on a display panel using the threshold voltage and the corrected mobility.

Abstract translation: 公开了一种发光显示装置，其能够使各像素的驱动开关装置之间的电流驱动能力的偏差最小化，从而实现增强的屏幕质量。 一种驱动发光显示装置的方法包括使用第一感测电压通过每条数据线或每条电力线检测每个像素的驱动薄膜晶体管（TFT）的阈值电压和迁移率; 通过使用第二电压再次感测通过每个数据线或每个电力线的每个像素的驱动TFT的迁移率来校正驱动TFT之间的迁移率的误差; 以及使用阈值电压和校正的移动性补偿要在显示面板上显示的视频数据。

公开(公告)号：US12190829B2

公开(公告)日：2025-01-07

申请号：US18062516

申请日：2022-12-06

Applicant: LG Display Co., Ltd.

Inventor： Joon-Ki Kim ,  Ji-Eun Lee

IPC: G09G3/3291 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/3266

Abstract: An organic light emitting diode display device includes: a timing controlling unit generating an image data, a data control signal and a gate control signal; a data driving unit generating a data voltage using the image data and the data control signal and including an output channel outputting one of the data voltage and a pre-charge voltage; a gate driving unit generating a gate1 voltage, a gate2 voltage, a gate3 voltage, an emission1 voltage and an emission2 voltage using the gate control signal; a display panel including a subpixel, a gate line, a data line and a reset line, the subpixel including first to seventh transistors, a storage capacitor and a light emitting diode; and a selecting unit connecting the output channel to one of the data line and the reset line.

公开(公告)号：US08988329B2

公开(公告)日：2015-03-24

申请号：US13715080

申请日：2012-12-14

Applicant: LG Display Co., Ltd.

Inventor： Joong-Sun Yoon ,  Seung-Tae Kim ,  Ji-Hyun Kang ,  Ji-Eun Lee

IPC: G09G3/30 ,  G09G3/32

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0861 ,  G09G2320/0295

Abstract: Disclosed are an OLED display device and method for sensing characteristic parameters of pixel driving circuits. The display device includes a display panel including pixels each having a light emitting element and a pixel driving circuit for independently driving the light emitting element, and a characteristic parameter detecting unit for driving the pixel driving circuit of one of the plural pixels, which is a sensing pixel, sensing a voltage discharged in accordance with characteristics of a driving TFT in the pixel driving circuit of the sensing pixel, on a data line connected to the pixel driving circuit of the sensing pixel, among data lines connected to respective pixel driving circuits of the pixels, and detecting a threshold voltage (Vth) of the driving TFT and a deviation of a process characteristic parameter (k-parameter) of the driving TFT, using the measured voltage.

Abstract translation: 公开了用于检测像素驱动电路的特征参数的OLED显示装置和方法。 该显示装置包括：显示面板，包括各自具有发光元件的像素和用于独立驱动发光元件的像素驱动电路的像素;以及特性参数检测单元，用于驱动多个像素中的一个像素驱动电路 感测像素，在与感测像素的像素驱动电路连接的数据线上感测根据感测像素的像素驱动电路中的驱动TFT的特性放电的电压，连接到各个像素驱动电路的数据线 并且使用测量的电压检测驱动TFT的阈值电压（Vth）和驱动TFT的处理特性参数（k参数）的偏差。

公开(公告)号：US09035976B2

公开(公告)日：2015-05-19

申请号：US13711789

申请日：2012-12-12

Applicant: LG Display Co., Ltd.

Inventor： Ji-Eun Lee ,  Bum-Sik Kim ,  Seung-Tae Kim ,  Won-Kyu Ha ,  Kil-Hwan Oh

IPC: G09G3/32 ,  G09G5/10 ,  G06F3/038 ,  G09G3/00

CPC classification number: G09G3/3283 ,  G09G3/006 ,  G09G3/3233 ,  G09G3/3291 ,  G09G5/10 ,  G09G2310/0251 ,  G09G2320/043 ,  G09G2330/12

Abstract: The present invention relates to an organic light emitting diode display device capable of sensing driving current of each pixel with a simple configuration to compensate for a luminance deviation between pixels and a pixel current sensing method thereof. The organic light emitting diode display device includes a display panel including 2N (N being a natural number) pixels that share a reference line though which a reference signal is supplied and are respectively connected to 2N data lines through which data signals are applied, and a data driver for driving the 2N pixels sharing the reference line in a time division manner through the data lines, sensing currents of the time-division-driven 2N pixels as voltages through the shared reference line and outputting the sensed currents, in a sensing mode.

Abstract translation: 本发明涉及一种有机发光二极管显示装置，其能够以简单的配置来感测每个像素的驱动电流，以补偿像素之间的亮度偏差和其像素电流检测方法。 有机发光二极管显示装置包括：显示面板，其包括2N（N为自然数）像素，共享参考线，参考信号被提供，并且分别连接到2N数据线，数据信号通过该数据线施加， 数据驱动器，用于通过数据线以时分方式驱动共享参考线的2N个像素，通过共享参考线感测时分驱动的2N像素的电流作为电压，并以感测模式输出感测的电流。