Invention Grant
- Patent Title: Light control sheet and light control window
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Application No.: US16877644Application Date: 2020-05-19
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Publication No.: US11442322B2Publication Date: 2022-09-13
- Inventor: Tetsushi Yoshida
- Applicant: TOPPAN PRINTING CO., LTD.
- Applicant Address: JP Taito-ku
- Assignee: TOPPAN PRINTING CO., LTD.
- Current Assignee: TOPPAN PRINTING CO., LTD.
- Current Assignee Address: JP Taito-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JPJP2017-254088 20171228
- Main IPC: G02F1/1334
- IPC: G02F1/1334 ; G02F1/137 ; B60J1/00 ; B60J3/04 ; B60J3/06 ; G02F1/1335 ; G02F1/1337 ; G02F1/1343 ; B60J1/08 ; B60J1/18

Abstract:
A light control sheet including a light control layer sandwiched between first and second orientation layers and including a polymer network in which domains are dispersed and filled with a liquid crystal composition including a liquid crystal molecule and a dichroic dye, a pair of transparent electrodes sandwiching the orientation layers, and a polarizing layer positioned on an opposite side of the first orientation layer to the light control layer. The light control layer has a transmittance that increases upon application of a driving voltage to the pair of transparent electrodes. When the driving voltage is not applied between the transparent electrodes, the orientation layers orient the liquid crystal molecule and the dichroic dye horizontally to the orientation layers and orient an orient absorption ax of the dichroic dye to cross an absorption axis of the polarizing layer as viewed in a thickness direction of the light control layer.
Public/Granted literature
- US20200278566A1 LIGHT CONTROL SHEET AND LIGHT CONTROL WINDOW Public/Granted day:2020-09-03
Information query
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