US 12,253,760 B2
Display screen and display apparatus
Jing Wang, Beijing (CN); Peng Li, Beijing (CN); Yangyang Cai, Beijing (CN); Chunbing Zhang, Beijing (CN); Xiang Li, Beijing (CN); Bochang Wang, Beijing (CN); Hetao Wang, Beijing (CN); Zhanchang Bu, Beijing (CN); Yu Zhang, Beijing (CN); and Shou Li, Beijing (CN)
Assigned to BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/788,038
Filed by BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Jun. 25, 2021, PCT No. PCT/CN2021/102271
§ 371(c)(1), (2) Date Jun. 22, 2022,
PCT Pub. No. WO2022/266983, PCT Pub. Date Dec. 29, 2022.
Prior Publication US 2024/0168337 A1, May 23, 2024
Int. Cl. G02F 1/1335 (2006.01); G02F 1/137 (2006.01); G09G 3/20 (2006.01); G09G 3/34 (2006.01); G09G 3/36 (2006.01)
CPC G02F 1/133626 (2021.01) [G02F 1/133504 (2013.01); G02F 1/133531 (2021.01); G02F 1/137 (2013.01); G09G 3/2007 (2013.01); G09G 3/2096 (2013.01); G09G 3/3406 (2013.01); G09G 3/36 (2013.01); G02F 2202/28 (2013.01); G09G 2310/0243 (2013.01); G09G 2310/0297 (2013.01); G09G 2320/02 (2013.01); G09G 2320/0626 (2013.01); G09G 2330/021 (2013.01); G09G 2340/00 (2013.01); G09G 2360/144 (2013.01); G09G 2360/16 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display apparatus, comprising a display screen, wherein the display screen comprises:
a transmissive liquid crystal panel, wherein the transmissive liquid crystal panel comprises a displaying side and a non-displaying side arranged opposite to each other;
a first polarizer, arranged at the displaying side of the transmissive liquid crystal panel;
a second polarizer, arranged at the non-displaying side of the transmissive liquid crystal panel, wherein a direction of a transmission axis of the first polarizer is perpendicular to a direction of a transmission axis of the second polarizer;
a scattering layer, arranged between the first polarizer and the transmissive liquid crystal panel, and/or arranged between the second polarizer and the transmissive liquid crystal panel; and
a reflective polarizer, the reflective polarizer being arranged between the transmissive liquid crystal panel and the second polarizer;
wherein the display apparatus further comprises:
a backlight module, configured for providing a light source to the display screen;
a video signal processing unit, configured for controlling a video display signal of the display screen;
a light detection unit, configured for collecting ambient light data;
a microcontroller unit connected to the light detection unit and the video signal processing unit, the microcontroller unit being configured for generating a mode switching signal according to the ambient light data collected by the light detection unit, and for controlling an operating state of the backlight module and an operating state of the video signal processing unit, to cause the display apparatus to be switched between a transmissive mode and a reflective mode,
wherein in the transmissive mode, the backlight module is turned on, and the video signal processing unit sends a first image display signal to the display screen; and
in the reflective mode, the backlight module is turned off, and the video signal processing unit sends a second image display signal to the display screen, an image grey scale of the first image display signal and an image grey scale of the second image display signal are complementary.