US 11,985,849 B2
Polarizer and manufacturing method thereof, display panel, and display device
Chi Yu, Beijing (CN); Yu Zhang, Beijing (CN); Weiyun Huang, Beijing (CN); and Zhenli Zhou, Beijing (CN)
Assigned to CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Chengdu (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/415,771
Filed by CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Nov. 9, 2020, PCT No. PCT/CN2020/127469
§ 371(c)(1), (2) Date Jun. 18, 2021,
PCT Pub. No. WO2021/093702, PCT Pub. Date May 20, 2021.
Claims priority of application No. 201911121009.7 (CN), filed on Nov. 15, 2019.
Prior Publication US 2022/0069262 A1, Mar. 3, 2022
Int. Cl. H10K 50/80 (2023.01); F21V 8/00 (2006.01); G02B 5/30 (2006.01); G02F 1/1335 (2006.01); H10K 59/65 (2023.01)
CPC H10K 50/868 (2023.02) [G02B 5/3025 (2013.01); G02B 6/0056 (2013.01); G02F 1/133528 (2013.01); H10K 59/65 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A polarizer, comprising: a polarizing layer, wherein
the polarizing layer comprises a first polarizing region and a second polarizing region; and
a light transmittance of the first polarizing region is greater than a light transmittance of the second polarizing region, and a ratio of the light transmittance of the first polarizing region to the light transmittance of the second polarizing region is 1.1:1 to 2.6:1;
the first polarizing region has been treated to have a light transmittance of the first polarizing region by arranging a metal mask with an opening corresponding to the first polarizing region on a surface of at least one side of the polarizing layer to be treated, and placing the polarizing layer to be treated at a processing temperature for another processing time;
a portion of the metal mask other than the opening is configured to block water vapor from entering the polarizing layer, and the opening of the metal mask serves as an unobstructed region to allow water vapor to enter the polarizing layer through the opening; and at the same time of treating the polarizing layer to be treated under the treatment temperature, the polarizing layer to be treated is under a treatment humidity.