US 12,078,891 B2
Liquid crystal device
Kojiro Ikeda, Tokyo (JP); Takeo Koito, Tokyo (JP); Koichi Nagao, Tokyo (JP); and Shinichiro Tanaka, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by JAPAN DISPLAY INC., Tokyo (JP)
Filed on Sep. 12, 2023, as Appl. No. 18/367,116.
Application 18/367,116 is a continuation of application No. PCT/JP2022/005860, filed on Feb. 15, 2022.
Claims priority of application No. 2021-040606 (JP), filed on Mar. 12, 2021.
Prior Publication US 2023/0418108 A1, Dec. 28, 2023
Int. Cl. G02F 1/1337 (2006.01); G02F 1/1343 (2006.01); G02F 1/1347 (2006.01)
CPC G02F 1/1337 (2013.01) [G02F 1/134309 (2013.01); G02F 1/1347 (2013.01); G02F 2201/124 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A liquid crystal device comprising:
a first liquid crystal cell;
a second liquid crystal cell overlapping the first liquid crystal cell;
a third liquid crystal cell overlapping the second liquid crystal cell; and
a fourth liquid crystal cell overlapping the third liquid crystal cell, wherein
each of the first liquid crystal cell and the second liquid crystal cell comprises:
a first transparent substrate;
a first alignment film;
a first strip electrode and a second strip electrode located between the first transparent substrate and the first alignment film, arranged at an interval, and configured to have mutually different voltages applied thereto;
a second transparent substrate;
a second alignment film;
a third strip electrode and a fourth strip electrode located between the second transparent substrate and the second alignment film, arranged at an interval, and configured to have mutually different voltages applied thereto; and
a liquid crystal layer located between the first alignment film and the second alignment film,
an extension direction of each of the first strip electrode and the second strip electrode in the first liquid crystal cell is different from an extension direction of each of the first strip electrode and the second strip electrode in the second liquid crystal cell,
in each of the first liquid crystal cell and the second liquid crystal cell, the extension direction of each of the first strip electrode and the second strip electrode is orthogonal to an extension direction of each of the third strip electrode and the fourth strip electrode in plan view,
when a side of the first transparent substrate is referred to as a reference, a direction orthogonal to the side is referred to as a first direction, and a direction parallel to the side is referred to as a second direction in each of the first liquid crystal cell and the second liquid crystal cell,
an alignment treatment direction of the first alignment film is parallel to the first direction,
an alignment treatment direction of the second alignment film is parallel to the second direction,
the extension direction of the first strip electrode intersects with the first direction,
the extension direction of the third strip electrode intersects with the second direction,
each of the third liquid crystal cell and the fourth liquid crystal cell comprises the first strip electrode, the second strip electrode, the third strip electrode, and the fourth strip electrode,
the first strip electrode and the second strip electrode in the first liquid crystal cell, and the first strip electrode and the second strip electrode in the third liquid crystal cell, have rotational symmetry of 90° in plan view, and
the first strip electrode and the second strip electrode in the second liquid crystal cell, and the first strip electrode and the second strip electrode in the fourth liquid crystal cell, have rotational symmetry of 90° in plan view.