Invention Grant
- Patent Title: Optical shuttering device based on liquid crystals with attenuation of switching noises of said liquid crystals, corresponding viewing goggles and display device
- Patent Title (中): 基于具有所述液晶切换噪声衰减的液晶的光学快门装置,对应的观察眼镜和显示装置
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Application No.: US13144449Application Date: 2009-11-16
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Publication No.: US08817196B2Publication Date: 2014-08-26
- Inventor: Jean-Louis De Bougrenet De La Tocnaye , Bertrand Caillaud , Emmanuel Daniel , Robert Bellini , Olivier Castany
- Applicant: Jean-Louis De Bougrenet De La Tocnaye , Bertrand Caillaud , Emmanuel Daniel , Robert Bellini , Olivier Castany
- Applicant Address: FR Brest
- Assignee: Institut Telecom/Telecom Bretagne
- Current Assignee: Institut Telecom/Telecom Bretagne
- Current Assignee Address: FR Brest
- Agency: Westman Champlin & Koehler, P.A.
- Agent David D. Brush
- Priority: FR0950153 20090113
- International Application: PCT/EP2009/065257 WO 20091116
- International Announcement: WO2010/081573 WO 20100722
- Main IPC: G02F1/1335
- IPC: G02F1/1335 ; H04N13/04

Abstract:
An optical shuttering device is provided, which includes an optical cell with a liquid crystal material between first and second transparent substrates and controlled by an electronic switching circuit. The switching circuit includes a power supply module, providing a control voltage, and a switching element mounted in series between the power supply module and the cell, making it possible to switch the cell between an on state and an off state. The electronic switching circuit furthermore includes a current source mounted in series between the power supply module and the switching element. The substrates preferably have different thickness and material.
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