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US 2025/0052937 A1Published application
Liquid crystal optical element and display device
AssigneesJapan Display Inc., Osaka University
InventorsKoichi IGETA, Junji KOBASHI, Yasushi TOMIOKA, Shinichiro OKA, Hiroyuki YOSHIDA
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Abstract
According to one embodiment, a liquid crystal optical element includes a transparent substrate, and a liquid crystal layer which faces the transparent substrate and has a cholesteric liquid crystal and an additive exhibiting liquid crystallinity. Refractive anisotropy of the additive is less than refractive anisotropy of the liquid crystal layer.
Claims14
A liquid crystal optical element comprising:
- a transparent substrate;
- and
- a liquid crystal layer which faces the transparent substrate and has a cholesteric liquid crystal and an additive exhibiting liquid crystallinity, wherein
- refractive anisotropy of the additive is less than refractive anisotropy of the liquid crystal layer.
1 more element
A liquid crystal optical element comprising:
- a transparent substrate;
- and
- a liquid crystal layer which faces the transparent substrate and has a cholesteric liquid crystal and an additive exhibiting liquid crystallinity, wherein
- refractive anisotropy of the additive is less than refractive anisotropy of the cholesteric liquid crystal.
1 more element
A display device comprising:
- a transparent substrate having a first main surface and a second main surface which faces the first main surface;
- a display module which faces the first main surface in a first area of the transparent substrate and is configured to emit display light;
- a first liquid crystal layer which faces the second main surface in the first area and has a first cholesteric liquid crystal;
- a second liquid crystal layer which overlaps the first liquid crystal layer and has a second cholesteric liquid crystal;
- and
- a third liquid crystal layer which overlaps the second liquid crystal layer and has a third cholesteric liquid crystal, wherein
- each of the first liquid crystal layer, the second liquid crystal layer and the third liquid crystal layer has an additive exhibiting liquid crystallinity,
- the first cholesteric liquid crystal, the second cholesteric liquid crystal and the third cholesteric liquid crystal have helical pitches which are different from each other, and
- refractive anisotropy of the additive is less than refractive anisotropy of each of the first liquid crystal layer, the second liquid crystal layer and the third liquid crystal layer.
6 more elements
A display device comprising:
- a transparent substrate having a first main surface and a second main surface which faces the first main surface;
- a display module which faces the first main surface in a first area of the transparent substrate and is configured to emit display light;
- a first liquid crystal layer which faces the second main surface in the first area and has a first cholesteric liquid crystal;
- a second liquid crystal layer which overlaps the first liquid crystal layer and has a second cholesteric liquid crystal;
- and
- a third liquid crystal layer which overlaps the second liquid crystal layer and has a third cholesteric liquid crystal, wherein
- each of the first liquid crystal layer, the second liquid crystal layer and the third liquid crystal layer has an additive exhibiting liquid crystallinity,
- the first cholesteric liquid crystal, the second cholesteric liquid crystal and the third cholesteric liquid crystal have helical pitches which are different from each other, and
- refractive anisotropy of the additive is less than refractive anisotropy of each of the first cholesteric liquid crystal, the second cholesteric liquid crystal and the third cholesteric liquid crystal.
6 more elements
Dependencies are inferred from the claim text.