US 11,921,384 B2
Light control device and illumination device
Takeo Koito, Tokyo (JP); Tae Kurokawa, Tokyo (JP); and Masashi Mitsui, Tokyo (JP)
Assigned to JAPAN DISPLAY INC., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Aug. 5, 2022, as Appl. No. 17/881,610.
Application 17/881,610 is a continuation of application No. PCT/JP2020/047432, filed on Dec. 18, 2020.
Claims priority of application No. 2020-019706 (JP), filed on Feb. 7, 2020.
Prior Publication US 2022/0373831 A1, Nov. 24, 2022
Int. Cl. G02F 1/1347 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01); G02F 1/1343 (2006.01); G02F 1/137 (2006.01); G02F 1/29 (2006.01)
CPC G02F 1/1347 (2013.01) [G02F 1/133528 (2013.01); G02F 1/13362 (2013.01); G02F 1/134309 (2013.01); G02F 1/13756 (2021.01); G02F 1/29 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A light control device comprising, in a liquid crystal cell comprising a liquid crystal layer between a pair of substrates:
an insulating substrate; and
first to fourth electrodes arranged in order on the insulating substrate and formed in a strip shape,
wherein an interval between the first electrode and the second electrode, an interval between the second electrode and the third electrode, and an interval between the third electrode and the fourth electrode are different from each other,
widths of the respective first to fourth electrodes are different from each other, and
a pitch between the first electrode and the second electrode, a pitch between the second electrode and the third electrode, and a pitch between the third electrode and the fourth electrode are equal to each other.