公开(公告)号：US20240127761A1

公开(公告)日：2024-04-18

申请号：US17289291

申请日：2021-04-25

Applicant: TCL China Star Optoelectronics Technology Co., Ltd.

Inventor： Daobing HU ,  Guangmiao WAN ,  Hang WANG ,  Xu WANG ,  Cong HU ,  Hongyuan XU ,  Woosung SON

IPC: G09G3/34 ,  G09G3/32

CPC classification number: G09G3/3406 ,  G09G3/32 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/064

Abstract: A backlight driving method and a display panel are provided. The backlight driving method provided by the present application uses pulse width modulation technology to modulate a low-level pulse width of a scan signal. By increasing a low-level pulse width to increase the pulse period, a number of high-level pulses is reduced, thereby reducing a high-level pulse time. Therefore, a time for a TFT to receive a high-level voltage is also reduced, thereby improving a stability of the TFT and also improving a problem of a threshold voltage drift of the TFT.

公开(公告)号：US20240221696A1

公开(公告)日：2024-07-04

申请号：US18139976

申请日：2023-04-27

Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Jun ZHAO ,  Bin ZHAO ,  Juncheng XIAO ,  Hongyuan XU ,  Shi TANG ,  Guangmiao WAN ,  Daobing HU ,  Meinan LI ,  Maoxia ZHU ,  Yu LIU

IPC: G09G3/36 ,  G02F1/1333 ,  G02F1/13357 ,  G09G3/32 ,  G09G3/34

CPC classification number: G09G3/36 ,  G02F1/13336 ,  G02F1/133603 ,  G09G3/32 ,  G09G3/3406 ,  G09G2300/026 ,  G09G2320/0666

Abstract: The present application provides a splicing display device includes a liquid crystal display screen and an inorganic light emitting diode display screen. A color point coordinate of a color of a light emitted by the liquid crystal display screen in the CIE 1931 XYZ chromaticity diagram is in a first gamut triangle. A color point coordinate of a color of a light emitted by the inorganic light emitting diode display screen in the CIE 1931 XYZ chromaticity diagram is in a second gamut triangle. A gamut boundary of the second gamut triangle surrounds a gamut boundary of the first gamut triangle, and a difference between a NTSC color gamut corresponding to the second gamut triangle and a NTSC color gamut corresponding to the first gamut triangle is less than 30%.