US 11,892,673 B2
Dimming assembly, backlight module, and liquid crystal display device
Xiaoyan Tu, Beijing (CN); Ting Cui, Beijing (CN); Chengkun Liu, Beijing (CN); Hongyu Zhao, Beijing (CN); Ming Li, Beijing (CN); Shaochuan Ouyang, Beijing (CN); Dingjie Zheng, Beijing (CN); Yuhang Lin, Beijing (CN); Hui Yu, Beijing (CN); Long Hu, Beijing (CN); Han Zhang, Beijing (CN); Liri Chen, Beijing (CN); Jie Liu, Beijing (CN); Panhong Xu, Beijing (CN); and Ming Chen, Beijing (CN)
Assigned to FUZHOU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Fujian (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/765,797
Filed by Fuzhou BOE Optoelectronics Technology Co., Ltd., Fujian (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Mar. 9, 2021, PCT No. PCT/CN2021/079722
§ 371(c)(1), (2) Date Mar. 31, 2022,
PCT Pub. No. WO2021/208638, PCT Pub. Date Oct. 21, 2021.
Claims priority of application No. 202020583969.7 (CN), filed on Apr. 17, 2020.
Prior Publication US 2022/0404541 A1, Dec. 22, 2022
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/0051 (2013.01) 19 Claims
OG exemplary drawing
 
1. A dimming assembly, comprising:
a first prism having a first surface and a second surface opposite to each other, the first surface including a plurality of first dimming portions, each first dimming portion including two first side surfaces, and edges of the two first side surfaces away from the second surface intersecting at a first intersection line; and
a second prism disposed on a side where the second surface of the first prism is located, a surface of the second prism proximate to the second surface including a plurality of second dimming portions, each second dimming portion including two second side surfaces, and edges of the two second side surfaces proximate to the second surface intersecting at a second intersection line, wherein
a distance between orthographic projections of two adjacent first intersection lines on the second surface is less than a distance between orthographic projections of two adjacent second intersection lines on the second surface; and
an acute angle between an extending direction of an orthographic projection of the first intersection line on the second surface and an extending direction of an orthographic projection of the second intersection line on the second surface is greater than 0 degrees and less than 10 degrees.