US 12,461,383 B2
Active retarder for 3D image display and display device
Takahiro Sasaki, Kameyama (JP); Hiromi Matsumoto, Kameyama (JP); Takashi Satoh, Kameyama (JP); and Akira Sakai, Kameyama (JP)
Assigned to Sharp Display Technology Corporation, Kameyama (JP)
Filed by Sharp Display Technology Corporation, Kameyama (JP)
Filed on Nov. 28, 2023, as Appl. No. 18/521,019.
Claims priority of application No. 2022-206835 (JP), filed on Dec. 23, 2022.
Prior Publication US 2024/0210721 A1, Jun. 27, 2024
Int. Cl. G02B 30/25 (2020.01); G02B 30/00 (2020.01); G02B 30/31 (2020.01); G02F 1/1335 (2006.01); G02F 1/1339 (2006.01); G02F 1/1347 (2006.01)
CPC G02B 30/25 (2020.01) [G02B 30/00 (2020.01); G02B 30/31 (2020.01); G02F 1/133512 (2013.01); G02F 1/1339 (2013.01); G02F 1/13394 (2013.01); G02F 1/1347 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An active retarder for a three-dimensional (3D) image display, the active retarder comprising:
an optical laminate that comprises:
a pair of substrates;
a pair of electrodes disposed between the pair of substrates;
a liquid crystal layer formed from a liquid crystal material containing liquid crystal molecules;
columnar spacers; and
light-blocking components, each shielding a corresponding columnar spacer, among the columnar spacers, from light,
wherein the light-blocking components are arranged in a dot pattern in a plan view correspondingly to the columnar spacers that are arranged in a dot pattern in the plan view,
each of the light-blocking components overlaps and is located above the corresponding columnar spacer, and
only the light-blocking components are capable of blocking the light.