公开(公告)号：US11087687B2

公开(公告)日：2021-08-10

申请号：US15685445

申请日：2017-08-24

Applicant: LG DISPLAY CO., LTD.

Inventor： Mookyoung Hong ,  Nari Kim

IPC: G09G3/3233 ,  G09G3/3241 ,  G09G3/3258

Abstract: A display device includes a display panel, a driver IC, and a control circuit. The control circuit includes operation circuitry to calculate the magnitude of a driving current flowing in a first pixel column in response to first voltage information from the driver IC, where the first voltage information corresponding to a voltage level of a first power supply line applied to a first pixel group of the display panel. The operation circuitry also calculates a compensation gain by comparing the magnitude of the driving current with preset current information. Further, the control circuit includes a compensator to receive a first data signal, generate a second data signal by applying the compensation gain to the first data signal, and transfer the second data signal to the driver IC. The display device and driving method may suppress image quality degradation by monitoring a high-potential voltage and correcting a data signal.

公开(公告)号：US09111491B2

公开(公告)日：2015-08-18

申请号：US14134173

申请日：2013-12-19

Applicant: LG Display Co., Ltd.

Inventor： Kyoung Don Woo ,  Nari Kim ,  Jae Hoon Jung

IPC: G09G3/32

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G3/3291 ,  G09G2300/0819 ,  G09G2310/0248 ,  G09G2310/0262 ,  G09G2320/0295 ,  G09G2320/043

Abstract: An organic light emitting display device includes a display panel including a plurality of pixels having an organic light emitting diode and a pixel circuit; a gate driver to supply the plurality of pixels with a scan signal, a sensing signal, and a driving voltage; a data driver to supply data voltages and a reference voltage to the plurality of pixels in a driving mode, and sense voltages charged into the plurality of pixels in a sensing mode; a discharging driving unit to initialize voltages of a plurality of sensing power lines when the display device switches from the driving mode to the sensing mode; a timing controller to control the gate driver, the data driver, and the discharging driving unit to operate in and switch between the driving mode and the sensing mode; and a memory to store compensation data for the plurality of pixels.

Abstract translation: 有机发光显示装置包括：显示面板，包括具有有机发光二极管的多个像素和像素电路; 用于向所述多个像素提供扫描信号，感测信号和驱动电压的栅极驱动器; 数据驱动器，用于以驱动模式向所述多个像素提供数据电压和参考电压;以及在感测模式下感测充电到所述多个像素中的电压; 放电驱动单元，用于在显示装置从驱动模式切换到感测模式时初始化多个感测电力线的电压; 定时控制器，用于控制所述栅极驱动器，所述数据驱动器和所述放电驱动单元在所述驱动模式和所述感测模式之间操作并切换; 以及用于存储多个像素的补偿数据的存储器。

公开(公告)号：US20140176409A1

公开(公告)日：2014-06-26

申请号：US14056368

申请日：2013-10-17

Applicant: LG Display Co., Ltd.

Inventor： Tae Gung Kim ,  Kyeong Kun Jang ,  Ho Min Lim ,  Nari Kim ,  Myung-Gi Lim

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/048 ,  G09G2360/16

Abstract: Disclosed is an organic light emitting display device and a method of driving the same that can improve compensation performance of degradation of a driving TFT. A method of driving an organic light emitting display device comprises generating an estimated degradation value of a driving TFT by using accumulated data through input data counting; compensating all the pixels of a display panel by using a first gain value, which is initially set, and the estimated degradation value; generating a sensing value by sensing all or some of the pixels of the display panel after driving is performed for a certain time; generating a second gain value by compensating the first gain value if an error between the estimated degradation value and the sensing value is more than a reference value; generating compensation data by compensating the estimated degradation value by using the second gain value; and compensating all the pixels of the display panel by using the compensation data.

Abstract translation: 公开了一种有机发光显示装置及其驱动方法，其可以改善驱动TFT的劣化的补偿性能。 驱动有机发光显示装置的方法包括通过使用通过输入数据计数的累积数据来产生驱动TFT的估计劣化值; 通过使用初始设置的第一增益值和估计的劣化值来补偿显示面板的所有像素; 通过感测驱动后的显示面板的全部或一些像素在一定时间内产生感测值; 如果估计的劣化值和感测值之间的误差大于参考值，则通过补偿第一增益值来产生第二增益值; 通过使用所述第二增益值补偿所述估计劣化值来产生补偿数据; 并通过使用补偿数据来补偿显示面板的所有像素。

公开(公告)号：US09805642B2

公开(公告)日：2017-10-31

申请号：US14108356

申请日：2013-12-17

Applicant: LG Display Co., Ltd.

Inventor： Nari Kim ,  Seung Tae Kim ,  Tae Gung Kim ,  Ji Eun Lee

IPC: G09G3/3208 ,  G09G3/3233

CPC classification number: G09G3/3208 ,  G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/045

Abstract: An organic light emitting display device includes a display panel having a plurality of pixels provided with a pixel circuit to operate an organic light emitting diode, and a driving circuit to drive the display panel, wherein ‘n’ horizontal sensing lines are formed in the display panel, and a method for driving the display device includes: dividing the ‘n’ horizontal sensing lines formed in the display panel into a plurality of blocks; and sequentially or non-sequentially sensing the plurality of blocks via the sensing lines, wherein the plurality of blocks are sensed in order from the first to the last of the ‘n’ sensing lines by a sequential or non-sequential method.

公开(公告)号：US09349317B2

公开(公告)日：2016-05-24

申请号：US14056368

申请日：2013-10-17

Applicant: LG DISPLAY CO., LTD.

Inventor： Tae Gung Kim ,  Kyeong Kun Jang ,  Ho Min Lim ,  Nari Kim ,  Myung-Gi Lim

IPC: G09G3/36 ,  G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/048 ,  G09G2360/16

Abstract: Disclosed is an organic light emitting display device and a method of driving the same that can improve compensation performance of degradation of a driving TFT. A method of driving an organic light emitting display device comprises generating an estimated degradation value of a driving TFT by using accumulated data through input data counting; compensating all the pixels of a display panel by using a first gain value, which is initially set, and the estimated degradation value; generating a sensing value by sensing all or some of the pixels of the display panel after driving is performed for a certain time; generating a second gain value by compensating the first gain value if an error between the estimated degradation value and the sensing value is more than a reference value; generating compensation data by compensating the estimated degradation value by using the second gain value; and compensating all the pixels of the display panel by using the compensation data.

Abstract translation: 公开了一种有机发光显示装置及其驱动方法，其可以改善驱动TFT的劣化的补偿性能。 驱动有机发光显示装置的方法包括通过使用通过输入数据计数的累积数据来产生驱动TFT的估计劣化值; 通过使用初始设置的第一增益值和估计的劣化值来补偿显示面板的所有像素; 通过感测驱动后的显示面板的全部或一些像素在一定时间内产生感测值; 如果估计的劣化值和感测值之间的误差大于参考值，则通过补偿第一增益值来产生第二增益值; 通过使用所述第二增益值补偿所述估计劣化值来产生补偿数据; 并通过使用补偿数据来补偿显示面板的所有像素。

公开(公告)号：US20140176525A1

公开(公告)日：2014-06-26

申请号：US14134173

申请日：2013-12-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyoung Don Woo ,  Nari Kim ,  Jae Hoon Jung

IPC: G09G3/32

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G3/3291 ,  G09G2300/0819 ,  G09G2310/0248 ,  G09G2310/0262 ,  G09G2320/0295 ,  G09G2320/043

Abstract: An organic light emitting display device includes a display panel including a plurality of pixels having an organic light emitting diode and a pixel circuit; a gate driver to supply the plurality of pixels with a scan signal, a sensing signal, and a driving voltage; a data driver to supply data voltages and a reference voltage to the plurality of pixels in a driving mode, and sense voltages charged into the plurality of pixels in a sensing mode; a discharging driving unit to initialize voltages of a plurality of sensing power lines when the display device switches from the driving mode to the sensing mode; a timing controller to control the gate driver, the data driver, and the discharging driving unit to operate in and switch between the driving mode and the sensing mode; and a memory to store compensation data for the plurality of pixels.

Abstract translation: 有机发光显示装置包括：显示面板，包括具有有机发光二极管的多个像素和像素电路; 用于向所述多个像素提供扫描信号，感测信号和驱动电压的栅极驱动器; 数据驱动器，用于以驱动模式向所述多个像素提供数据电压和参考电压;以及在感测模式下感测充电到所述多个像素中的电压; 放电驱动单元，用于在显示装置从驱动模式切换到感测模式时初始化多个感测电力线的电压; 定时控制器，用于控制所述栅极驱动器，所述数据驱动器和所述放电驱动单元在所述驱动模式和所述感测模式之间操作并切换; 以及用于存储多个像素的补偿数据的存储器。

公开(公告)号：US10896637B2

公开(公告)日：2021-01-19

申请号：US15717146

申请日：2017-09-27

Applicant: LG Display Co., Ltd.

Inventor： Nari Kim ,  Seung Tae Kim ,  Tae Gung Kim ,  Ji Eun Lee

IPC: G09G3/3233 ,  G09G3/3208

Abstract: An organic light emitting display device includes a display panel having a plurality of pixels provided with a pixel circuit to operate an organic light emitting diode, and a driving circuit to drive the display panel, wherein ‘n’ horizontal sensing lines are formed in the display panel, and a method for driving the display device includes: dividing the ‘n’ horizontal sensing lines formed in the display panel into a plurality of blocks; and sequentially or non-sequentially sensing the plurality of blocks via the sensing lines, wherein the plurality of blocks are sensed in order from the first to the last of the ‘n’ sensing lines by a sequential or non-sequential method.

公开(公告)号：US20180018915A1

公开(公告)日：2018-01-18

申请号：US15717146

申请日：2017-09-27

Applicant: LG Display Co., Ltd.

Inventor： Nari Kim ,  Seung Tae Kim ,  Tae Gung Kim ,  Ji Eun Lee

IPC: G09G3/3208 ,  G09G3/3233

CPC classification number: G09G3/3208 ,  G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/045

Abstract: An organic light emitting display device includes a display panel having a plurality of pixels provided with a pixel circuit to operate an organic light emitting diode, and a driving circuit to drive the display panel, wherein ‘n’ horizontal sensing lines are formed in the display panel, and a method for driving the display device includes: dividing the ‘n’ horizontal sensing lines formed in the display panel into a plurality of blocks; and sequentially or non-sequentially sensing the plurality of blocks via the sensing lines, wherein the plurality of blocks are sensed in order from the first to the last of the ‘n’ sensing lines by a sequential or non-sequential method.

公开(公告)号：US20140176401A1

公开(公告)日：2014-06-26

申请号：US14108356

申请日：2013-12-17

Applicant: LG Display Co., Ltd.

Inventor： Nari Kim ,  Seung Tae Kim ,  Tae Gung Kim ,  Ji Eun Lee

IPC: G09G3/32

CPC classification number: G09G3/3208 ,  G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/045

Abstract: An organic light emitting display device includes a display panel having a plurality of pixels provided with a pixel circuit to operate an organic light emitting diode, and a driving circuit to drive the display panel, wherein ‘n’ horizontal sensing lines are formed in the display panel, and a method for driving the display device includes: dividing the ‘n’ horizontal sensing lines formed in the display panel into a plurality of blocks; and sequentially or non-sequentially sensing the plurality of blocks via the sensing lines, wherein the plurality of blocks are sensed in order from the first to the last of the ‘n’ sensing lines by a sequential or non-sequential method.

Abstract translation: 有机发光显示装置包括：具有多个像素的显示面板，具有用于操作有机发光二极管的像素电路;以及驱动电路，驱动显示面板，其中在显示器中形成“n”个水平感测线 面板和用于驱动显示装置的方法包括：将形成在显示面板中的“n”个水平感测线划分成多个块; 并且经由感测线顺序地或非顺序地感测多个块，其中通过顺序或非顺序方法从“n”个感测线的第一到最后的顺序感测多个块。