Title:
LIQUID CRYSTAL OPTICAL ELEMENT
Document Type and Number:
WIPO Patent Application WO/2023/013215
Kind Code:
A1
Abstract:
The purpose of an embodiment of the present invention is to provide a liquid crystal optical element whereby a desired reflection performance can be obtained. According to an embodiment, a liquid crystal optical element includes: an optical waveguide including a first main surface and a second main surface opposing the first main surface; a first alignment film disposed on the second main surface; a first liquid crystal layer that is stacked on the first alignment film, includes a first cholesteric liquid crystal, and reflects at least a portion of light, that enters through the optical waveguide, toward the optical waveguide; a second alignment film that is stacked on the first liquid crystal layer; and a second liquid crystal layer that is stacked on the second alignment film, includes a second cholesteric liquid crystal, and reflects at least a portion of the light, that enters through the optical waveguide, toward the optical waveguide.
Inventors:
IGETA KOICHI (JP)
OKA SHINICHIRO (JP)
TOMIOKA YASUSHI (JP)
KOBASHI JUNJI (JP)
YOSHIDA HIROYUKI (JP)
OKA SHINICHIRO (JP)
TOMIOKA YASUSHI (JP)
KOBASHI JUNJI (JP)
YOSHIDA HIROYUKI (JP)
Application Number:
PCT/JP2022/021570
Publication Date:
February 09, 2023
Filing Date:
May 26, 2022
Export Citation:
Assignee:
JAPAN DISPLAY INC (JP)
UNIV OSAKA (JP)
UNIV OSAKA (JP)
International Classes:
G02B5/30; H01L31/054; H02S40/22
Domestic Patent References:
| WO2019131966A1 | 2019-07-04 | |||
| WO2021132615A1 | 2021-07-01 | |||
| WO2020075738A1 | 2020-04-16 |
Foreign References:
| JP2004126576A | 2004-04-22 | |||
| JP2003255299A | 2003-09-10 | |||
| JP2020501186A | 2020-01-16 |
Attorney, Agent or Firm:
S & S INTERNATIONAL PPC (JP)
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