US 11,796,845 B2
Louver, viewing angle control element and display device
Yasuhiro Takahashi, Tokyo (JP); and Jin Hirosawa, Tokyo (JP)
Assigned to JAPAN DISPLAY INC., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Jan. 9, 2023, as Appl. No. 18/151,489.
Claims priority of application No. 2022-003105 (JP), filed on Jan. 12, 2022.
Prior Publication US 2023/0221592 A1, Jul. 13, 2023
Int. Cl. G02F 1/1337 (2006.01); G02F 1/13 (2006.01); G02F 1/1343 (2006.01); G02F 1/137 (2006.01); G02F 1/1335 (2006.01); G02F 1/1333 (2006.01)
CPC G02F 1/1323 (2013.01) [G02F 1/137 (2013.01); G02F 1/1337 (2013.01); G02F 1/133345 (2013.01); G02F 1/133512 (2013.01); G02F 1/133553 (2013.01); G02F 1/134309 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A louver comprising:
a first transparent substrate;
a first organic insulating film provided on an inner surface side of the first transparent substrate, and comprising a first inclined surface, a second inclined surface facing the first inclined surface, and a third inclined surface facing the second inclined surface;
a first reflective layer provided along the first inclined surface;
a second reflective layer spaced apart from the first reflective layer and provided along the second inclined surface;
a second organic insulating film which covers the first reflective layer and the second reflective layer;
a first light-shielding layer provided in the first inclined surface;
a second light-shielding layer spaced apart from the first light-shielding layer and provided in the second inclined surface;
a first light shield located between the first transparent substrate and the first light-shielding layer and formed of a metal material;
a second light shield located between the first transparent substrate and the second light-shielding layer and formed of a metal material;
a first insulating film which covers the first light shield and the second light shield;
a third light shield overlapping the first light shield, located between the first insulating film and the first light-shielding layer and formed of a black resinous material;
a fourth light shield overlapping the second light shield, located between the first insulating film and the second light-shielding layer and formed of a black resinous material; and
a second insulating film which covers the third light shield and the fourth light shield,
wherein
the first reflective layer comprises a first reflective surface which is in contact with the second organic insulating film,
the second reflective layer comprises a second reflective surface which is in contact with the second organic insulating film,
an interval between the first reflective surface and the second reflective surface increases with distance from the first transparent substrate,
the first reflective layer is stacked in the first light-shielding layer, and
the second reflective layer is stacked in the second light-shielding layer.