US 11,719,870 B2
All-around curved polarizer
Ming-Shing Lo, Taoyuan (TW); Jian Hung Wu, Taoyuan (TW); Hisn Hsing Li, Taoyuan (TW); and Mao-Sung Huang, Taoyuan (TW)
Assigned to BenQ Materials Corporation, Taoyuan (TW)
Filed by BenQ Materials Corporation, Taoyuan (TW)
Filed on Feb. 23, 2022, as Appl. No. 17/673,911.
Claims priority of application No. 110131592 (TW), filed on Aug. 26, 2021.
Prior Publication US 2023/0072560 A1, Mar. 9, 2023
Int. Cl. G02B 5/30 (2006.01); G02B 1/08 (2006.01); G02B 1/14 (2015.01); G02F 1/1335 (2006.01)
CPC G02B 5/305 (2013.01) [G02B 1/08 (2013.01); G02B 1/14 (2015.01); G02B 5/3033 (2013.01); C09K 2323/03 (2020.08); G02F 1/133541 (2021.01)] 8 Claims
OG exemplary drawing
 
1. An all-around curved polarizer for an all-around curved display device, comprising:
a polarizing layer;
a first protective layer disposed at a side of the polarizing layer facing to the all-around curved display device and having a first coefficient of thermal expansion; and
a second protective layer disposed at the other side of the polarizing layer opposed to the all-around curved display device and having a second coefficient of thermal expansion;
wherein the all-around curved polarizer comprises a flat display area and a curved display area surrounding the flat display area; and
wherein the first coefficient of the thermal expansion of the first protective layer is between 10*10−6/° C. and 20*10−6/° C., and the second coefficient of thermal expansion of the second protective layer is between 25*10/° C. and 40*10−6/ºC.