公开(公告)号：US10319309B2

公开(公告)日：2019-06-11

申请号：US15783832

申请日：2017-10-13

Applicant: LG Display Co., Ltd.

Inventor： Junghyeon Kim ,  Jinhan Yoon ,  Hanjin Bae

IPC: G06F3/038 ,  G09G5/00 ,  G09G3/3291 ,  G09G3/20 ,  G09G3/3233 ,  G09G3/3266

Abstract: The present invention provides a display device that comprises a display panel displaying an image, M reference voltage generators (M is an integer of 2 or greater) that respectively supply reference voltages to N display areas (N is an integer of 2 or greater) defined on the display panel, and a voltage variation corrector that corrects for voltage variations between the M reference voltages (M is an integer of 2 or greater).

公开(公告)号：US09779655B2

公开(公告)日：2017-10-03

申请号：US14968475

申请日：2015-12-14

Applicant: LG Display Co., Ltd.

Inventor： Hanjin Bae

IPC: G09G3/30 ,  G09G3/3225 ,  G09G3/3208

CPC classification number: G09G3/3225 ,  G09G3/3208 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2330/021

Abstract: An organic light emitting display can include a display panel including pixels, a degradation sensing circuit to sense a threshold voltage of organic light emitting diodes (OLEDs) in the pixels and calculate an average degradation value based on the sensed threshold voltage of the OLEDs, a compensation target adjustor to adjust a compensation target based on the average degradation value, when the average degradation value is reduced by a previously determined reference value, and a data modulator to add and subtract a luminance compensation value determined depending on the adjusted compensation target to and from input digital video data and modulate the input digital video data. Also, each time the average degradation value is reduced by the previously determined reference value, the compensation target adjustor reduces stepwise the compensation target in conformity with changes in the average degradation value, and a stepwise adjustment width of the compensation target is non-uniform.

公开(公告)号：US09230472B2

公开(公告)日：2016-01-05

申请号：US13679595

申请日：2012-11-16

Applicant: LG DISPLAY CO., LTD.

Inventor： Hanjin Bae

IPC: G09G3/32

CPC classification number: G09G3/3225 ,  G09G3/3208 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2330/021

Abstract: An organic light emitting display includes a display panel including pixels, a degradation sensing circuit which senses a threshold voltage of organic light emitting diodes included in the pixels and calculates an average degradation value defined by an average luminance value due to the degradation based on the sensed threshold voltage, a compensation target adjustor which adjusts a compensation target based on the average degradation value, each time the average degradation value is reduced by a previously determined reference value, and a data modulator which adds and subtracts a luminance compensation value determined depending on the adjusted compensation target to and from digital video data and modulates the digital video data.

Abstract translation: 有机发光显示器包括包括像素的显示面板，劣化感测电路，其检测包括在像素中的有机发光二极管的阈值电压，并计算由于根据感测到的劣化导致的平均亮度值所限定的平均劣化值 阈值电压，补偿目标调整器，其每当平均劣化值被预先确定的参考值减小时，基于平均劣化值来调整补偿目标;以及数据调制器，其加和减去根据该阈值电压确定的亮度补偿值 对数字视频数据进行调整补偿目标，并调制数字视频数据。