US 12,461,413 B2
Dimming assembly, backlight module and display device
Minghui Zhahg, Beijing (CN); Lei Liu, Beijing (CN); Yao Zhang, Beijing (CN); Dongyu Liu, Beijing (CN); and Hui Guo, Beijing (CN)
Assigned to Nanjing BOE Display Technology CO., LTD., Jiangsu (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 18/704,910
Filed by Nanjing BOE Display Technology CO., LTD., Jiangsu (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Jul. 28, 2023, PCT No. PCT/CN2023/110020
§ 371(c)(1), (2) Date Apr. 25, 2024,
PCT Pub. No. WO2025/025014, PCT Pub. Date Feb. 6, 2025.
Prior Publication US 2025/0271700 A1, Aug. 28, 2025
Int. Cl. G02F 1/133 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/133607 (2021.01) [G02F 1/133611 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A dimming assembly, comprising:
a first prism sheet and a second prism sheet disposed oppositely; the first prism sheet has a first surface and a second surface which are opposite to each other, wherein the first surface comprises a plurality of first dimming portions extending in a first direction and arranged in an array;
the second prism sheet has a third surface and a fourth surface which are opposite to each other, wherein the third surface is located on a side of the second prism sheet close to the first prism sheet, and the third surface comprises a plurality of second dimming portions extending in a second direction and arranged in an array; and
an auxiliary film located on a side of the first prism sheet away from the second prism sheet;
wherein the first prism sheet further has at least one first side surface extending in a third direction and connecting the first surface with the second surface, and the second prism sheet further has at least one second side surface extending in the third direction and connecting the third surface with the fourth surface; an included angle between the third direction and the first direction is a first cutting angle of the first prism sheet, and an included angle between the third direction and the second direction is a second cutting angle of the second prism sheet; and
an absolute value of the second cutting angle of the second prism sheet is greater than an absolute value of the first cutting angle of the first prism sheet, and the absolute values of the first cutting angle and the second cutting angle are greater than or equal to 0 and less than 90 degrees.