公开(公告)号：US20240203349A1

公开(公告)日：2024-06-20

申请号：US18494413

申请日：2023-10-25

Applicant: LG Display Co., Ltd.

Inventor： Seokhyun HONG ,  JungHyeon KIM ,  Jaeik YOO

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2330/021

Abstract: According to embodiments of the present disclosure, there may be provided a display device and a driving method. During a first type sensing time period during display driving, a voltage difference between a first node and a second node of a driving transistor is set to correspond to a threshold voltage stored in a memory, whereby it is possible to compensate for, in real time period, threshold voltage variations of driving transistors.

公开(公告)号：US20240257707A1

公开(公告)日：2024-08-01

申请号：US18529290

申请日：2023-12-05

Applicant: LG Display Co., Ltd.

Inventor： Jaeik YOO ,  JungHyeon KIM ,  SangHo YU ,  Tae-Wook KIM

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/2096 ,  G09G3/32 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2320/048 ,  G09G2330/021

Abstract: A controller and a display device including the controller are discussed. The display device can perform a compensation based on a stress value for each sub-pixel and update a correction table used for compensation using a sensing value acquired at a preset period. As such, it is possible to improve the accuracy of real-time compensation. In addition, since it is possible to compensate for a sub-pixel for which a sensing value is not acquired using an indirect gain according to the ratio of the stress values of the sub-pixel to a sensing value, the accuracy of compensation can be improved even if sensing for each sub-pixel sharing a sensing line may not be easy.

公开(公告)号：US20180033366A1

公开(公告)日：2018-02-01

申请号：US15655581

申请日：2017-07-20

Applicant: LG Display Co., Ltd.

Inventor： Jaeik YOO ,  Myunggi LIM ,  Osung DO

IPC: G09G3/3233 ,  G09G3/3275 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2003 ,  G09G3/3275 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2320/0219 ,  G09G2320/0238 ,  G09G2320/029

Abstract: The sensing method for an organic light-emitting display comprises: defining a pixel group comprising a reference pixel and two or more valid pixels, among a plurality of pixels arranged on a horizontal line; obtaining a black level current sensing value by applying a black level data voltage to the reference pixel; obtaining a current sensing value for a given gray level by applying a data voltage for the given gray level higher than the black level to each of the valid pixels; and obtaining a pixel current sensing value by subtracting the black level current sensing value from the current sensing value for the given gray level to eliminate common noise.