US 12,032,238 B2
Optical adjusting film, backlight module and display device
Heling Zhu, Beijing (CN); Xin Li, Beijing (CN); Jian Sang, Beijing (CN); Shubai Zhang, Beijing (CN); Kangle Chang, Beijing (CN); and Lu Yu, Beijing (CN)
Assigned to BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/265,691
Filed by BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Jul. 22, 2020, PCT No. PCT/CN2020/103434
§ 371(c)(1), (2) Date Feb. 3, 2021,
PCT Pub. No. WO2021/023009, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 201910712077.4 (CN), filed on Aug. 2, 2019.
Prior Publication US 2021/0191192 A1, Jun. 24, 2021
Int. Cl. G02F 1/1335 (2006.01); G02F 1/13 (2006.01)
CPC G02F 1/133524 (2013.01) [G02F 1/1323 (2013.01); G02F 1/133607 (2021.01)] 17 Claims
OG exemplary drawing
 
1. An optical adjusting film comprising:
a first substrate and a second substrate opposite to each other;
a first electrode layer on a side of the first substrate facing the second substrate;
a second electrode layer on a side of the second substrate facing the first substrate;
a polymer dispersed liquid crystal layer between the first electrode layer and the second electrode layer; and
an anti-adsorption surface layer on a side of the first substrate away from the second substrate, and/or on a side of the second substrate away from the first substrate, the anti-adsorption surface layer being configured to suppress adsorption between the optical adjusting film and a solid surface,
wherein static friction coefficient k between the anti-adsorption surface layer and a lower polarizer satisfies: k≤0.35,
static friction coefficient k between the anti-adsorption surface layer and an anti-peek film satisfies: k≤0.35; and
a contact angle a of distilled water with respect to a surface of the anti-adsorption surface layer away from the polymer dispersed liquid crystal layer satisfies: a≥70°.