Title:
PHOTOALIGNMENT CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/130913
Kind Code:
A1
Abstract:
A photoalignment control device (1) comprises: a first substrate (10) and a second substrate (20), which are translucent and arranged opposite each other; a first electrode layer (40) and a second electrode layer (50), which are translucent and arranged opposite each other between the first substrate (10) and the second substrate (20); and a photoalignment layer (30) arranged between the first electrode layer (40) and the second electrode layer (50). The photoalignment layer (30) includes: an irregularly-structured layer (31) having a plurality of projections (33); and a variable refractive index layer (32) arranged to fill the spaces between the plurality of projections (33) with the refractive index changing in accordance with a voltage applied between the first electrode layer (40) and the second electrode layer (50). The photoalignment layer is configured to switch between a transparent state and a photoaligned state, in which incident light is bent while traveling, in accordance with a change in the refractive index of the variable refractive index layer (32). When the photoalignment layer (30) is in the photoaligned state, the photoalignment ratio of the photoalignment control device (1) is 27% or greater, and the direct radiation ratio is 10% or less.
Inventors:
SHIBATA MASAOMI
WAKASA YU
OTA MASUYUKI
WAKASA YU
OTA MASUYUKI
Application Number:
PCT/JP2018/042809
Publication Date:
July 04, 2019
Filing Date:
November 20, 2018
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G02F1/19; G02F1/167
Domestic Patent References:
| WO2016063500A1 | 2016-04-28 | |||
| WO2016163079A1 | 2016-10-13 |
Foreign References:
| JP2015114640A | 2015-06-22 |
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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