US 11,914,236 B2
Liquid crystal display device
Koji Murata, Kameyama (JP); Hiroshi Tsuchiya, Kameyama (JP); Shinpei Higashida, Kameyama (JP); Takahiro Sasaki, Kameyama (JP); Takashi Satoh, Kameyama (JP); and Shinji Shimada, Kameyama (JP)
Assigned to Sharp Display Technology Corporation, Kameyama (JP)
Filed by Sharp Display Technology Corporation, Kameyama (JP)
Filed on Jan. 3, 2023, as Appl. No. 18/092,858.
Claims priority of application No. 2022-000450 (JP), filed on Jan. 5, 2022.
Prior Publication US 2023/0213798 A1, Jul. 6, 2023
Int. Cl. G02F 1/13 (2006.01); G02F 1/1335 (2006.01); G02F 1/1343 (2006.01); G02F 1/133 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/1323 (2013.01) [G02F 1/13306 (2013.01); G02F 1/133512 (2013.01); G02F 1/133514 (2013.01); G02F 1/134309 (2013.01); G02F 1/1336 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A liquid crystal display device comprising:
a liquid crystal panel provided with sub-pixels arranged in a matrix pattern; and
a control circuit,
the liquid crystal panel sequentially including an active matrix substrate, a liquid crystal layer, and a color filter substrate,
the active matrix substrate sequentially including a first substrate, a first electrode, a first insulating layer, and second electrodes arranged in the respective sub-pixels and including a first linear electrode extending in a first direction,
the color filter substrate including a second substrate, a black matrix lying between the sub-pixels, a color filter layer, a third electrode including second linear electrodes, and a fourth electrode which is a floating electrode,
the third electrode and the fourth electrode disposed between the black matrix and the liquid crystal layer,
the second linear electrodes extending in a second direction that intersects the first direction and each overlapping a portion of the black matrix extending in the second direction,
the fourth electrode disposed in the same layer as the third electrode and between the second linear electrodes and overlapping at least a portion of the black matrix in a plan view, and
the control circuit configured to switch between an application of a driving voltage and an application of a constant voltage to the third electrode.