US 11,988,924 B2
Light control device and illumination device
Tae Kurokawa, Tokyo (JP); Takeo Koito, Tokyo (JP); and Masashi Mitsui, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Jun. 3, 2022, as Appl. No. 17/805,330.
Application 17/805,330 is a continuation of application No. PCT/JP2020/038685, filed on Oct. 13, 2020.
Claims priority of application No. 2019-223755 (JP), filed on Dec. 11, 2019.
Prior Publication US 2022/0299826 A1, Sep. 22, 2022
Int. Cl. G02F 1/1343 (2006.01); G02F 1/1333 (2006.01); G02F 1/1347 (2006.01)
CPC G02F 1/134309 (2013.01) [G02F 1/133345 (2013.01); G02F 1/1347 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A light control device comprising:
a first substrate including first to third electrodes formed in an annular shape and a fourth electrode;
a second substrate; and
a liquid crystal layer held between the first substrate and the second substrate, wherein
the first electrode and the second electrode are arranged in a first direction,
the first electrode and the third electrode are arranged in a direction different from the first direction,
the fourth electrode is adjacent to the first to third electrodes,
the first substrate further includes a first conductive line intersecting the first electrode and the second electrode, a second conductive line intersecting the third electrode, and an insulating film provided between the first and second conductive lines and the first to fourth electrodes,
the first electrode and the second electrode are electrically connected to the first conductive line,
the third electrode is electrically connected to the second conductive line, and
the fourth electrode is located between the first conductive line and the second conductive line and is configured to have electric potential different from electric potentials of the first to third electrodes.