US 12,443,076 B2
Liquid crystal display panel, liquid crystal display device, and manufacturing method for liquid crystal display device
Akira Banjouya, Kanagawa (JP)
Assigned to Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed by Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed on Dec. 1, 2022, as Appl. No. 18/073,198.
Claims priority of application No. 2021-213855 (JP), filed on Dec. 28, 2021.
Prior Publication US 2023/0205018 A1, Jun. 29, 2023
Int. Cl. G02F 1/1339 (2006.01); G02F 1/1333 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/1339 (2013.01) [G02F 1/133302 (2021.01); G02F 1/133331 (2021.01); G02F 1/133354 (2021.01); G02F 1/133602 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A liquid crystal display panel, comprising:
a first substrate curved in a first direction;
a second substrate curved in the first direction and facing the first substrate;
a liquid crystal sandwiched between the first substrate and the second substrate; and
a seal that adheres the first substrate and the second substrate to each other, and that seals the liquid crystal, wherein
when cross-sectionally viewing on a cross-section including the first direction and a display direction,
a curved surface provided in a display region surrounded by inner peripheral ends of the seal, and conforming to a first main surface of the first substrate facing the second substrate includes at least one inflection point, and tangent planes of the curved surface at each inner peripheral end of the seal are parallel to each other,
the curved surface includes at least one convex surface and at least one concave surface continuous with the at least one convex surface, the at least one convex surface having a curvature radius different than a curvature radius of the at least one concave surface,
a sum of at least one center angle of the at least one convex surface is equal to a sum of at least one center angle of the at least one concave surface, and
a length of a center line of a thickness direction of the first substrate and a length of a center line of a thickness direction of the second substrate are equal in the display region.