US 12,265,306 B2
Light adjustment device
Hiroya Morimoto, Tokyo (JP); and Shunpei Takeuchi, Tokyo (JP)
Assigned to JAPAN DISPLAY INC., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Jul. 10, 2023, as Appl. No. 18/349,190.
Claims priority of application No. 2022-112033 (JP), filed on Jul. 12, 2022.
Prior Publication US 2024/0019742 A1, Jan. 18, 2024
Int. Cl. G02F 1/1347 (2006.01); G02F 1/1337 (2006.01); G02F 1/1339 (2006.01); G02F 1/1343 (2006.01)
CPC G02F 1/1347 (2013.01) [G02F 1/1337 (2013.01); G02F 1/1339 (2013.01); G02F 1/134309 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A light adjustment device comprising a panel unit including a plurality of light adjustment panels stacked in a first direction, wherein
the light adjustment panels each include
a first substrate,
a second substrate overlapping the first substrate in a first direction,
a first alignment film provided on the first substrate,
a second alignment film provided on the second substrate and overlapping the first alignment film in the first direction,
a seal material provided between the first substrate and the second substrate and on the outer side of the first alignment film and the second alignment film,
a liquid crystal layer provided between the first alignment film and the second alignment film and sealed by the seal material, and
a conductive member providing conduction between a first electrode provided on the first substrate and a second electrode provided on the second substrate,
the first alignment film and the second alignment film each have a first edge that are recessed toward a center of each of the light adjustment panels,
the conductive member is positioned at a gap portion between the first edge and the seal material and is within an area sealed by the seal material,
a plurality of infiltration prevention members each protruding in the first direction is are provided between the first edge and the conductive member at the gap portion,
each of the infiltration prevention members has a substantially L shape and continuously extends from one end to the other end, and has both ends coupled to the seal material, and
the infiltration prevention members are provided on both sides of the first substrate and the second substrate,
a constant gap in the first direction is provided between:
the infiltration prevention members that are provided on a side of the first substrate and that have a same height; and
the infiltration prevention members that are provided on a side of the second substrate having and that have a same height, and
the infiltration prevention members on the side of the first substrate are provided and arranged at intervals, that is unfilled by the first alignment film, from the first edge toward the conductive member.