Invention Grant
- Patent Title: Double-sided display apparatus
- Patent Title (中): 双面显示装置
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Application No.: US11660370Application Date: 2005-08-17
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Publication No.: US08049840B2Publication Date: 2011-11-01
- Inventor: Takashi Akiyama
- Applicant: Takashi Akiyama
- Applicant Address: JP Tokyo
- Assignee: Citizen Holdings Co., Ltd.
- Current Assignee: Citizen Holdings Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- Priority: JP2004-237052 20040817
- International Application: PCT/JP2005/015302 WO 20050817
- International Announcement: WO2006/019174 WO 20060223
- Main IPC: G02F1/1347
- IPC: G02F1/1347 ; G02F1/1335

Abstract:
The object of the invention is to provide a display apparatus that can partially eliminate the need for a backlight unit and that achieves a corresponding reduction in thickness. The display apparatus includes two display panels arranged one on top of the other and each having two transparent substrates disposed opposite each other with a liquid crystal layer provided therebetween, and the first display panel has a reflective layer, a light-guiding transparent substrate, and a light control layer, and the second transparent substrate, reflective layer, light control layer, and light source together constitute an illuminating means for illuminating the second display panel which is an illuminated member, with provisions made to illuminate the second display panel by the light emerging from the light-guiding transparent substrate.
Public/Granted literature
- US20070206137A1 Display Apparatus Public/Granted day:2007-09-06
Information query
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