Invention Grant
- Patent Title: Reflective display having improved brightness and contrast
- Patent Title (中): 具有改善亮度和对比度的反光显示器
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Application No.: US12097421Application Date: 2006-12-11
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Publication No.: US08149495B2Publication Date: 2012-04-03
- Inventor: Sander Jurgen Roosendaal , Martinus Hermanus Wilhelmus Maria Van Delden
- Applicant: Sander Jurgen Roosendaal , Martinus Hermanus Wilhelmus Maria Van Delden
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee Address: NL Eindhoven
- Agent Larry Liberchuk
- Priority: EP05112172 20051214
- International Application: PCT/IB2006/054740 WO 20061211
- International Announcement: WO2007/069179 WO 20070621
- Main IPC: G02B26/00
- IPC: G02B26/00 ; G02F1/15 ; G02F1/1333

Abstract:
A reflective display, comprising a plurality of pixels (10), each having a first electrode, a light-modifying layer (12), and a second electrode (3; 16) arranged to enable formation of an electric field in the light-modifying layer (12) through application of a voltage between the electrodes. The pixel (10) further includes an active portion (16) which is switchable between light-modifying states by means of said electric field, and an inactive portion (17). The inactive portion (17) is arranged for reflecting light so as to direct at least a fraction of incoming light (20) impinging on the inactive portion (17) towards the active portion (16). As a result, a contrast ratio of the reflective display is improved, since light is now directed from the inactive portion towards the active portion and thus contributes to the displayed image as observed by a viewer.
Public/Granted literature
- US20080278796A1 Reflective Display Having Improved Brightness and Contrast Public/Granted day:2008-11-13
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