US 12,204,186 B2
Privacy filter, display panel, and display device
Rui He, Wuhan (CN); Wei Cheng, Wuhan (CN); and Changchih Huang, Wuhan (CN)
Assigned to Wuhan China Star Optoelectronics Technology Co., Ltd., Wuhan (CN)
Appl. No. 17/605,054
Filed by Wuhan China Star Optoelectronics Technology Co., Ltd., Wuhan (CN)
PCT Filed Sep. 7, 2021, PCT No. PCT/CN2021/116979
§ 371(c)(1), (2) Date Oct. 20, 2021,
PCT Pub. No. WO2023/015645, PCT Pub. Date Feb. 16, 2023.
Claims priority of application No. 202110932688.7 (CN), filed on Aug. 13, 2021.
Prior Publication US 2024/0019725 A1, Jan. 18, 2024
Int. Cl. G02F 1/13 (2006.01); G02F 1/1334 (2006.01); G02F 1/1335 (2006.01); G02F 1/1337 (2006.01); G02F 1/137 (2006.01)
CPC G02F 1/1323 (2013.01) [G02F 1/13345 (2021.01); G02F 1/133528 (2013.01); G02F 1/133531 (2021.01); G02F 1/133753 (2013.01); G02F 1/13706 (2021.01); G02F 1/13712 (2021.01); G02F 2413/08 (2013.01); G02F 2413/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display panel, comprising a panel body;
a first polarizer, disposed on one side of the panel body;
a dimming liquid crystal layer, disposed on one side of the first polarizer away from the panel body and comprising a plurality of polymer networks and a plurality of liquid crystal molecules distributed in the polymer networks, wherein each of the plurality of polymer networks is extended in a first direction, and the first direction tilts relative to a normal direction of the first polarizer; and
a second polarizer, disposed on one side of the dimming liquid crystal layer away from the first polarizer, an optical axis direction of the first polarizer being parallel to an optical axis direction of the second polarizer, wherein
in a first mode, each of long axes of the plurality of liquid crystal molecules is extended in the first direction; and
in a second mode, each of the long axes of the plurality of liquid crystal molecules is extended in a second direction, the second direction is different from the first direction, and a viewing angle of the display panel in the first model is less than a viewing angle of the display panel in the second mode.