US 11,668,980 B2
Liquid-crystal module and spatial light modulator
Shihao Tang, Shanghai (CN); Yang Zeng, Shanghai (CN); Feng Lu, Shanghai (CN); Qijun Yao, Shanghai (CN); Yaodong Wu, Shanghai (CN); Ziyu Shi, Shanghai (CN); and Yaqi Kuang, Shanghai (CN)
Assigned to HUBEI YANGTZE INDUSTRIAL INNOVATION CENTER OF ADVANCED DISPLAY CO., LTD., Wuhan (CN)
Filed by Hubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd., Wuhan (CN)
Filed on Dec. 17, 2020, as Appl. No. 17/124,618.
Claims priority of application No. 202011242552.5 (CN), filed on Nov. 9, 2020.
Prior Publication US 2022/0146875 A1, May 12, 2022
Int. Cl. G02F 1/1339 (2006.01); G02F 1/1347 (2006.01); G02F 1/1335 (2006.01); C09K 11/02 (2006.01)
CPC G02F 1/13394 (2013.01) [G02F 1/1347 (2013.01); G02F 1/13396 (2021.01); G02F 1/133512 (2013.01); G02F 1/133514 (2013.01); C09K 11/02 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A spatial light modulator, comprising:
a first liquid-crystal module and a second liquid-crystal module that are arranged opposite to each other, wherein:
the first liquid-crystal module includes a first array substrate, a first color filter substrate, a first liquid-crystal layer, and a plurality of first spacers, wherein the first liquid-crystal layer and the plurality of first spacers are disposed between the first array substrate and the first color filter substrate,
the second liquid-crystal module includes a second array substrate, a second color filter substrate, a second liquid-crystal layer, and a plurality of second spacers, wherein the second liquid-crystal layer and the plurality of second spacers are disposed between the second array substrate and the second color filter substrate,
the first array substrate, the first liquid-crystal layer, the first color filter substrate, the second color filter substrate, the second liquid-crystal layer, and the second array substrate are stacked sequentially,
at least one first spacer of the plurality of first spacers forms a first overlapped unit, at least one second spacer of the plurality of second spacers forms a second overlapped unit, and an orthographic projection of the first overlapped unit on the first array substrate fully overlaps an orthographic projection of the second overlapped unit on the first array substrate,
an orthographic projection of the first color filter substrate on the first array substrate is symmetrical with respect to a first axis,
the orthographic projection of the first overlapped unit on the first array substrate is symmetrical with respect to the first axis,
the orthographic projection of the first color filter substrate on the first array substrate is further symmetrical with respect to a second axis, wherein the second axis is perpendicular to the first axis, and
the orthographic projection of the first overlapped unit on the first array substrate is further symmetrical with respect to the second axis.