公开(公告)号：US20240257740A1

公开(公告)日：2024-08-01

申请号：US18423911

申请日：2024-01-26

Applicant: LG Display Co., Ltd.

Inventor： MinKyung LEE ,  ChangHoon JEON ,  Li-Jin KIM

IPC: G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2340/0435

Abstract: A light emitting display apparatus includes a pixel having a pixel driving circuit and a light emitting device, and a gate driver supplying gate signals to the pixel driving circuit. The pixel driving circuit includes a switching transistor and a first light emitting transistor. The first light emitting transistor is connected between an anode of the light emitting device and a first node, and the switching transistor is connected between a data line in the light emitting display panel and the first node. During use, the gate driver turns on the first light emitting transistor M times per second (M is a natural number of 3 or more) and turns on the switching transistor S times smaller than M times and more than one time (S is a natural number of 2 or more) per second. One second is divided into a refresh period and an anode reset period.

公开(公告)号：US20240257741A1

公开(公告)日：2024-08-01

申请号：US18425453

申请日：2024-01-29

Applicant: LG Display Co., Ltd.

Inventor： MinKyung LEE ,  ChangHoon JEON ,  Li-Jin KIM

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2340/0435

Abstract: A light emitting display apparatus includes a pixel including a pixel driving circuit and a light emitting device, and a gate driver supplying gate signals to the pixel driving circuit. The pixel driving circuit includes a switching transistor, a driving transistor, and a first light emitting transistor. The first light emitting transistor is connected between an anode of the light emitting device and a first node, the driving transistor controls the size of the current supplied to the light emitting device through the first node and the first light emitting transistor, and the switching transistor controls the supply of a data voltage to the light emitting device through the first node. During the use of the light emitting display apparatus, one second is divided into a refresh period and an anode reset period, and the switching transistor is turned on only during the refresh period.

公开(公告)号：US20230215339A1

公开(公告)日：2023-07-06

申请号：US18072111

申请日：2022-11-30

Applicant: LG Display Co., Ltd.

Inventor： YeoMyeong YOON ,  Li-Jin KIM

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2320/0233 ,  G09G2320/0686 ,  G09G2360/16 ,  G09G2320/0626 ,  G09G2310/08 ,  G09G2300/0842 ,  G09G2320/0242 ,  G09G2320/0666

Abstract: A method of correcting input image data for a display device can include receiving input image data by a controller in the display device, a first portion of the input image data corresponding to a first region of a display panel in the display device and a second portion of the input image data corresponding to a second region of the display panel having a pixel density different than a pixel density of the first region; and correcting, by the controller, at least some of the input image data to generate corrected image data based on at least one white correction value or at least one monochromatic correction value.

公开(公告)号：US20230215324A1

公开(公告)日：2023-07-06

申请号：US18073306

申请日：2022-12-01

Applicant: LG Display Co., Ltd.

Inventor： YeoMyeong YOON ,  Li-Jin KIM ,  HyunJun MIN

IPC: G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2007 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0871 ,  G09G2310/08 ,  G09G2310/027 ,  G09G2320/045 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2320/0276 ,  G09G2320/0693 ,  G09G2330/028 ,  G09G2360/147

Abstract: A luminance difference correction method and a light emitting display apparatus using the same is discussed. The luminance difference correction method can include receiving by an camera an image, which is output from a camera region of a light emitting display panel and is reflected by at least one of a reflector or a cover glass associated with the apparatus. The method can further include analyzing by a controller the image received by the camera, and varying a level of at least one of (i) a gamma voltage used to generate a data voltage to be output to data lines included in the light emitting display panel, and (ii) one or more of driving voltages supplied to pixels included in the light emitting display panel.