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：US11768414B2

公开(公告)日：2023-09-26

申请号：US17559183

申请日：2021-12-22

Applicant: LG Display Co., Ltd.

Inventor： Jeong-Tae Hwang ,  Seung-Tae Kim

IPC: G02F1/1362 ,  G09G3/36 ,  G09G3/3291 ,  G02F1/1368 ,  H10K59/131 ,  H10K59/35

CPC classification number: G02F1/136286 ,  G02F1/1368 ,  G09G3/3291 ,  G09G3/3688 ,  H10K59/131 ,  H10K59/353

Abstract: A display device includes first and second gate lines extending in a first direction; first and second data lines extending in a second direction and crossing the first and second gate lines; and a first horizontal pixel row including first, second, and third sub-pixels sequentially arranged in the first direction, wherein the first sub-pixel is connected to the first gate line and the first data line, the second sub-pixel is connected to the second gate line and the first data line, and the third sub-pixel is connected to the first gate line and the second data line.

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。

公开(公告)号：US09530353B2

公开(公告)日：2016-12-27

申请号：US14012768

申请日：2013-08-28

Applicant: LG Display Co., Ltd.

Inventor： Seung-Tae Kim ,  Han-Jin Bae ,  Ho-Min Lim ,  Won-Kyu Ha ,  Hak-Su Kim

IPC: G09G3/30 ,  G09G3/32

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0866 ,  G09G2300/0876 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/043

Abstract: An organic electroluminescent display device includes an organic electroluminescent diode receiving a driving voltage and a first ground voltage; first and second driving thin film transistors for providing a driving current to the organic electroluminescent diode; a first switching thin film transistor receiving a data voltage and switched by an nth scan signal; a second switching thin film transistor switched by a current providing signal; a third switching thin film transistor receiving a second ground voltage and switched by a selection signal; a fourth switching thin film transistor disposed among an output terminal of the second switching thin film transistor; and a first capacitor disposed among the output terminal of the first switching thin film transistor, the gate terminal of the first driving thin film transistor and the gate terminal of the second driving thin film transistor.

Abstract translation: 有机电致发光显示装置包括接收驱动电压和第一接地电压的有机电致发光二极管; 用于向有机电致发光二极管提供驱动电流的第一和第二驱动薄膜晶体管; 接收数据电压并由第n扫描信号切换的第一开关薄膜晶体管; 通过电流提供信号切换的第二开关薄膜晶体管; 接收第二接地电压并通过选择信号切换的第三开关薄膜晶体管; 第四开关薄膜晶体管，设置在第二开关薄膜晶体管的输出端之间; 以及设置在第一开关薄膜晶体管的输出端子，第一驱动薄膜晶体管的栅极端子和第二驱动薄膜晶体管的栅极端子之间的第一电容器。

公开(公告)号：US08994707B2

公开(公告)日：2015-03-31

申请号：US13725715

申请日：2012-12-21

Applicant: LG Display Co., Ltd.

Inventor： Jin-Hyoung Kim ,  Seung-Tae Kim ,  Ho-Min Lim

IPC: G09G5/00 ,  G09G3/32 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/20 ,  G09G2310/0248 ,  G09G2310/0254 ,  G09G2310/027

Abstract: Discussed are a display device and a method for controlling the same, which are capable of achieving a reduction in power consumption, through selective application of a charge share mode or a pre-charge mode in accordance with the swing width of a data voltage. The disclosed method includes the steps of determining a positive or negative polarity of input image data on the basis of reference data and outputting a pre-charge enable signal when two successive image data have the same polarity; supplying a pre-charge voltage to a corresponding output channel in response to the pre-enable signal; and converting the image data into a data voltage, supplying the converted data voltage to a corresponding data line through the corresponding output channel.

Abstract translation: 讨论了通过根据数据电压的摆动宽度选择性地应用电荷共享模式或预充电模式来讨论能够实现功率消耗降低的显示装置及其控制方法。 所公开的方法包括以下步骤：基于参考数据确定输入图像数据的正极性或负极性，并且当两个连续图像数据具有相同极性时输出预充电使能信号; 响应于所述预启用信号，向对应的输出通道提供预充电电压; 并将图像数据转换为数据电压，通过相应的输出通道将转换的数据电压提供给对应的数据线。

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。