公开(公告)号：US20150154908A1

公开(公告)日：2015-06-04

申请号：US14547878

申请日：2014-11-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Woojin NAM ,  Jintaek CHOI ,  Seongmin CHOI

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/0408 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2320/0295 ,  G09G2320/041 ,  G09G2320/045 ,  G09G2330/08

Abstract: Provided is an organic light emitting diode (OLED) display device including a plurality of pixels to display images, each of the pixels including an OLED, a driving transistor connected to the OLED, and a switching transistor configured to supply data signals to the OLED, the device including: a sensor configured to sense a change amount of a mobility of the driving transistor; a compensation value calculator configured to obtain a change amount of a threshold voltage of the driving transistor based on the sensed change amount of the mobility; and a data compensator configured to adjust the data signals based on the sensed change amount of mobility and the obtained change amount of the threshold voltage.

Abstract translation: 提供了一种包括多个像素以显示图像的有机发光二极管（OLED）显示设备，每个像素包括OLED，连接到OLED的驱动晶体管和被配置为向OLED提供数据信号的开关晶体管， 所述装置包括：传感器，被配置为感测所述驱动晶体管的迁移率的变化量; 补偿值计算器，被配置为基于所感测的移动性的改变量来获得驱动晶体管的阈值电压的变化量; 以及数据补偿器，被配置为基于所感测的迁移率的变化量和所获得的阈值电压的改变量来调整数据信号。

公开(公告)号：US20220122548A1

公开(公告)日：2022-04-21

申请号：US17460080

申请日：2021-08-27

Applicant: LG Display Co., Ltd.

Inventor： JinTaek CHOI ,  Hyojung PARK ,  Seongmin CHOI

IPC: G09G3/3275

Abstract: Embodiments of the disclosure relate to a controller and a display device. As the display device is driven, the stress value is accumulated, and a compensation value based on the accumulated stress value is applied upon driving the display. Thus, it is possible to compensate for degradation of subpixels in real time. Further, the amount of degradation of the subpixel is sensed at a preset time, and the stress value is corrected based on the degradation amount sensing data. Thus, it is possible to enhance the accuracy of real-time compensation for degradation of subpixels while minimizing sensing of degradation of subpixels.