Invention Grant
- Patent Title: Liquid crystal display
- Patent Title (中): 液晶显示器
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Application No.: US10288235Application Date: 2002-11-04
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Publication No.: US07079207B2Publication Date: 2006-07-18
- Inventor: Keiji Kashima
- Applicant: Keiji Kashima
- Applicant Address: JP Tokyo
- Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Dellett & Walters
- Priority: JP2001-340602 20011106
- Main IPC: G02F1/1335
- IPC: G02F1/1335

Abstract:
A liquid crystal display improves light utilization efficiency with a cholesteric liquid crystal filter to ensure color density enough to enable both transmission and reflection type displays. The display comprises a liquid crystal display device comprising a liquid crystal layer between transparent substrates, a voltage applying electrode, a driving circuit, an illumination light source, and a pair of circularly polarizing plates. A cholesteric liquid crystal filter semitransparent to red, green and blue wavelength ranges is located on the illumination light-directing side. The liquid crystal layer viewing side has a cholesteric liquid crystal color filter array capable of transmitting red, green and blue wavelength ranges and reflecting light in other wavelength ranges depending on a pixel arrangement, and absorption type color filter array is located in alignment therewith and capable of transmitting only red, green and blue wavelength ranges and absorbing light in other wavelengths.
Public/Granted literature
- US20030160924A1 Liquid crystal display Public/Granted day:2003-08-28
Information query
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