Invention Grant
- Patent Title: Liquid crystal display device and electronic apparatus
- Patent Title (中): 液晶显示装置及电子装置
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Application No.: US12107210Application Date: 2008-04-22
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Publication No.: US07751004B2Publication Date: 2010-07-06
- Inventor: Toshiharu Matsushima
- Applicant: Toshiharu Matsushima
- Applicant Address: JP Azumino-shi
- Assignee: Epson Imaging Devices Corporation
- Current Assignee: Epson Imaging Devices Corporation
- Current Assignee Address: JP Azumino-shi
- Agency: K&L Gates LLP
- Priority: JP2007-120549 20070501
- Main IPC: G02F1/1335
- IPC: G02F1/1335

Abstract:
In a transflective type liquid crystal display device of an FFS system, a plurality of pixels has a transmissive display area for emitting transmissive display light and a reflective display area for emitting reflective display light, and the reflective display area is equipped with a retardation layer. Polarization axes of polarizers are perpendicular to each other and an alignment direction of the liquid crystal layer is parallel to or perpendicular to the polarization axis of the first polarizer. The angle of a slow axis of the retardation layer is not less than 20° and not more than 25° or not less than 60° and not more than 75° with respect to the polarization axis of the first polarizer. A retardation value of the liquid crystal layer in the reflective area exceeds a quarter wavelength, and a retardation value of the retardation layer exceeds a half wavelength.
Public/Granted literature
- US20080273152A1 LIQUID CRYSTAL DISPLAY DEVICE AND ELECTRONIC APPARATUS Public/Granted day:2008-11-06
Information query
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