公开(公告)号：US11508284B2

公开(公告)日：2022-11-22

申请号：US16916162

申请日：2020-06-30

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Yang Yang ,  Bojia Lv ,  Xiangzi Kong

IPC: G09G3/00 ,  G09G3/20

Abstract: Disclosed are a grayscale compensation method and apparatus, and a display device. The grayscale compensation method includes obtaining a basic grayscale of each compensation device; obtaining an equivalent lighting duration of the each compensation device, where the equivalent lighting duration is a duration of lighting the compensation device with a preset grayscale obtained by converting an actual lighting duration of the compensation device; if the equivalent duration reaches a preset time point, obtaining a grayscale compensation parameter corresponding to the compensation device by searching a table according to the preset time point and the basic grayscale, and performing grayscale compensation on a sub-pixel in the compensation device according to the grayscale compensation parameter and the basic grayscale.

公开(公告)号：US11189221B2

公开(公告)日：2021-11-30

申请号：US16835313

申请日：2020-03-31

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Junting Ouyang ,  Yang Yang ,  Bojia Lv ,  Kerui Xi ,  Boquan Lin ,  Xiangzi Kong

IPC: G09G3/30 ,  G09G3/3208

Abstract: Provided is a display brightness compensation method including: setting an aging grayscale of a monochrome pixel of each of n test display panels; setting m test grayscales of the monochrome pixel; during a time period, illuminating the aging grayscale of the monochrome pixel, periodically illuminating each test grayscale of the monochrome pixel, and periodically obtaining a test display brightness of the monochrome pixel at the test grayscale at the aging grayscale; calculating a brightness-time characteristic of the monochrome pixel at each of the m test grayscales at the aging grayscale; and compensating an actual display brightness of a monochrome pixel of a target display panel at a current display moment based on the brightness-time characteristic. Both m and n are positive integers greater than or equal to 2. The monochrome pixels of any two test display panels have different aging grayscales.

公开(公告)号：US11056062B2

公开(公告)日：2021-07-06

申请号：US16839091

申请日：2020-04-03

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Junkai Liu ,  Yang Yang ,  Xiangzi Kong ,  Shuai Yang

IPC: G09G3/3275 ,  G09G3/3266 ,  G09G3/3225

Abstract: Provided are an organic light emitting display device and a driving method thereof. The display device includes data lines, first detection lines, first compensation detection circuits, a display driving chip, a compensation chip and a control chip. Each data line is electrically connected to a corresponding first detection line through at least one first compensation detection circuit. The display driving chip sends a reference data signal to the data lines in a detection stage. The compensation chip acquires signals collected by the first detection lines and sends the signals to the control chip in the detection stage. The control chip determines a data signal compensation parameter according to the received signals, and controls the display driving chip to provide a display data signal to the data lines in a display stage according to the data signal compensation parameter.