US 12,446,392 B2
Photovoltaic cell device
Shinichiro Oka, Tokyo (JP); Koichi Igeta, Tokyo (JP); Yasuyuki Yamada, Tokyo (JP); and Hiroumi Kinjo, Tokyo (JP)
Assigned to JAPAN DISPLAY INC., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Jul. 3, 2023, as Appl. No. 18/346,277.
Claims priority of application No. 2022-108479 (JP), filed on Jul. 5, 2022.
Prior Publication US 2024/0015993 A1, Jan. 11, 2024
Int. Cl. H10K 30/87 (2023.01); G02F 1/1337 (2006.01); H10K 30/50 (2023.01)
CPC H10K 30/87 (2023.02) [G02F 1/133753 (2013.01); H10K 30/50 (2023.02)] 7 Claims
OG exemplary drawing
 
1. A photovoltaic cell device comprising:
a transparent substrate comprising a first main surface and a second main surface opposed to the first main surface;
a liquid crystal layer disposed on the second main surface side of the transparent substrate and comprising a cholesteric liquid crystal including liquid crystal molecules; and
photovoltaic cells disposed on at least one of the first main surface side and the second main surface side of the transparent substrate in a first direction, each formed into a strip shape, and arranged with a gap along the first direction between the photovoltaic cells, wherein
a width in the first direction of each of the photovoltaic cells is less than the gap,
the first direction is a short-side direction of the photovoltaic cells,
the liquid crystal layer is cured in a state where alignment directions of the liquid crystal molecules are fixed,
in the liquid crystal layer, the cholesteric liquid crystal comprises a reflective surface configured to reflect circularly polarized light, and
the reflective surface is inclined with respect to the second main surface of the transparent substrate.