公开(公告)号：US11663974B2

公开(公告)日：2023-05-30

申请号：US17477955

申请日：2021-09-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Baoyun Wu ,  Zebang Guo ,  Hui Zhao

IPC: G09G3/3258 ,  G09G3/3291 ,  G09G5/10 ,  G09G3/00

CPC classification number: G09G3/3258 ,  G09G3/3291 ,  G09G5/10 ,  G09G2320/0626

Abstract: A correction method of a cathode voltage is provided, including: controlling an image generator to send a first image test signal including a cathode voltage to a display module to be tested at each brightness level of the display module to be tested; controlling an optical measuring device to measure a first display parameter of the image displayed by the display module to be tested according to the first image test signal; obtaining the first display parameter from the optical measuring device, and determining whether the first display parameter is within a display parameter threshold ramie; progressively adjusting the cathode voltage according to a determination result, and using a second image test signal including an adjusted cathode voltage to test the display module to be tested and obtain a second display parameter until a corrected cathode voltage at a current brightness level is obtained.

公开(公告)号：US11955068B2

公开(公告)日：2024-04-09

申请号：US17488581

申请日：2021-09-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Baoyun Wu ,  Zebang Guo ,  Hui Zhao

IPC: G09G3/3208 ,  G09G3/36 ,  G09G3/20

CPC classification number: G09G3/3208 ,  G09G3/3696 ,  G09G3/2074 ,  G09G2310/0297 ,  G09G2320/0233 ,  G09G2330/028

Abstract: Embodiments of the present disclosure provide a gamma standard voltage generating circuit, a gamma driving voltage generating circuit and a display device. The gamma standard voltage generating circuit includes: a constant voltage element for outputting a constant voltage; a following voltage element coupled to a driving voltage terminal, for outputting a following voltage changing with a driving voltage of the driving voltage terminal; a selecting element electrically coupled to the constant voltage element and the following voltage element, for outputting the following voltage 10 or the constant voltage as an output voltage; a comparison element electrically coupled to the selecting element, for controlling the selecting element to output the following voltage when the output voltage meets a preset standard, and controlling the selecting element to output the constant voltage when the output voltage does not meet the preset standard; the constant voltage does not meet the preset standard.

公开(公告)号：US11941209B2

公开(公告)日：2024-03-26

申请号：US17630128

申请日：2021-04-19

Applicant: BOE Technology Group Co., Ltd.

Inventor： Jiuzhen Wang ,  Meizhu Zheng ,  Lupeng Bian ,  Biao Gao ,  Zebang Guo ,  Xiongnan Zhang ,  Boyang Shi ,  Shengxing Zhang ,  Jian Cai ,  Dalin Xiang

IPC: G06F3/044 ,  B32B27/32 ,  B32B37/02

CPC classification number: G06F3/044 ,  B32B27/325 ,  B32B37/02 ,  B32B2457/208 ,  G06F2203/04102 ,  G06F2203/04103

Abstract: Provides in the present disclosure are a touch module, a preparation method therefor, and a display device. The touch module is formed by means of attaching a polarizing function layer to a side of a touch function layer by a first bonding layer; attaching a cyclo olefin polymer (COP) film layer to another side of the touch function layer by a second bonding layer; and attaching a third bonding layer to a side, facing away from the second bonding layer, of the COP film layer.