US 12,147,127 B2
Liquid crystal display
Tetsuo Fukaya, Kameyama (JP)
Assigned to Sharp Display Technology Corporation, Kameyama (JP)
Filed by Sharp Display Technology Corporation, Kameyama (JP)
Filed on Jan. 9, 2024, as Appl. No. 18/407,595.
Claims priority of application No. 2023-012982 (JP), filed on Jan. 31, 2023.
Prior Publication US 2024/0255815 A1, Aug. 1, 2024
Int. Cl. G02F 1/1345 (2006.01); G02F 1/1343 (2006.01); G02F 1/1362 (2006.01); G02F 1/1368 (2006.01)
CPC G02F 1/134372 (2021.01) [G02F 1/136286 (2013.01); G02F 1/1368 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A liquid crystal display in a fringe field switching mode including a first pixel and a second pixel which are contiguous to each other, the liquid crystal display comprising, in order:
a first substrate;
a liquid crystal layer; and
a second substrate, wherein
the first substrate has at least one layer of a lower layer member, a first pixel electrode and a second pixel electrode which are disposed corresponding to each of the first pixel and the second pixel, an interlayer insulating film, and a common electrode provided with a plurality of parallel slits, in order toward a liquid crystal layer side,
the at least one layer of the lower layer member has a first region and a second region having a smaller thickness than that of the first region, and via a step difference portion is located between the first region and the second region,
the first pixel electrode and the second pixel electrode are disposed in the first region, and the second region is disposed between the first pixel electrode and the second pixel electrode,
the common electrode includes a first common electrode and a second common electrode that overlap the first pixel electrode and the second pixel electrode, respectivelv, and further includes a third common electrode that overlaps the second region, and
in a cross-sectional view, surfaces of the first pixel electrode and the second pixel electrode on the liquid crystal laver side have the same height as a surface of the third common electrode that is on the liquid crystal layer side, or the surfaces of the first pixel electrode and the second pixel electrode on the liquid crystal layer side protrude toward the liquid crystal layer side compared to the surface of the third common electrode, such that the height of the surfaces of the first and second pixel electrodes on the liquid crystal layer side is higher than the height of the surface of the third common electrode.