公开(公告)号：US20160189623A1

公开(公告)日：2016-06-30

申请号：US14973656

申请日：2015-12-17

Applicant: LG Display Co., Ltd.

Inventor： Koichi Miwa ,  Seong-Eok Han ,  Junghyun Lee ,  Yonghan Jo

IPC: G09G3/32

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0439 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0276 ,  G09G2320/0295 ,  G09G2320/045 ,  G09G2320/0673 ,  G09G2340/0428

Abstract: An OLED display device includes an OLED display panel on which subpixels are disposed, a gamma reference voltage supply circuit supplying gamma reference voltages that are variable during driving and when sensing a threshold voltage, and a data driver supplying data voltages based on the gamma reference voltages to data lines. The data driver senses a voltage of a sensing node within each of the subpixels in sensing mode. A timing controller controls the data driver, and performs a compensation process based on the voltage sensed by the data driver.

Abstract translation: OLED显示装置包括其上设置有子像素的OLED显示面板，伽马参考电压供应电路，其提供在驱动期间可变的伽马参考电压和感测阈值电压时的伽马参考电压;以及基于伽马参考电压提供数据电压的数据驱动器 到数据线。 数据驱动器在感测模式下感测每个子像素内的感测节点的电压。 定时控制器控制数据驱动器，并且基于由数据驱动器感测的电压来执行补偿处理。

公开(公告)号：US11308892B2

公开(公告)日：2022-04-19

申请号：US17102124

申请日：2020-11-23

Applicant: LG Display Co., Ltd.

Inventor： Kyung-Hyun Cho ,  Jae-Deok Ko ,  Seong-Eok Han

IPC: G09G3/3208 ,  G09G3/3291 ,  G09G3/3258 ,  G09G3/3266

Abstract: The disclosure relates to an organic light emitting display device that can detect a defect in a scan transistor in the device in which the scan transistor and a sensing transistor simultaneously operate, and the device includes: an OLED in a subpixel; a driving transistor connected between the OLED and a driving voltage line; a scan transistor connected between a first node through which a data voltage is applied to the driving transistor and a data line; a sensing transistor connected between a second node between the driving transistor, the OLED, and a reference voltage line; and a defect detector for applying the data voltage in a state in which both the scan transistor and the sensing transistor are turned off and then detecting an amount of charges charged in a parasitic capacitor of the OLED to determine whether the scan transistor is defective due to foreign substances.

公开(公告)号：US09824634B2

公开(公告)日：2017-11-21

申请号：US14973656

申请日：2015-12-17

Applicant: LG Display Co., Ltd.

Inventor： Koichi Miwa ,  Seong-Eok Han ,  Junghyun Lee ,  Yonghan Jo

IPC: G09G3/30 ,  G09G3/3258 ,  G09G3/3233

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0439 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0276 ,  G09G2320/0295 ,  G09G2320/045 ,  G09G2320/0673 ,  G09G2340/0428

Abstract: An OLED display device includes an OLED display panel on which subpixels are disposed, a gamma reference voltage supply circuit supplying gamma reference voltages that are variable during driving and when sensing a threshold voltage, and a data driver supplying data voltages based on the gamma reference voltages to data lines. The data driver senses a voltage of a sensing node within each of the subpixels in sensing mode. A timing controller controls the data driver, and performs a compensation process based on the voltage sensed by the data driver.