Invention Grant
- Patent Title: Liquid crystal display device
- Patent Title (中): 液晶显示装置
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Application No.: US11045576Application Date: 2005-01-27
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Publication No.: US07643116B2Publication Date: 2010-01-05
- Inventor: Hidefumi Yoshida , Masakazu Shibasaki , Tsuyoshi Kamada , Kunihiro Tashiro , Yasutoshi Tasaka , Kazuya Ueda
- Applicant: Hidefumi Yoshida , Masakazu Shibasaki , Tsuyoshi Kamada , Kunihiro Tashiro , Yasutoshi Tasaka , Kazuya Ueda
- Applicant Address: JP Kawasaki TW Hsinchu
- Assignee: Fujitsu Limited,Au Optronics Corporation
- Current Assignee: Fujitsu Limited,Au Optronics Corporation
- Current Assignee Address: JP Kawasaki TW Hsinchu
- Agency: Greer, Burns & Crain, Ltd.
- Priority: JP2004-210690 20040716
- Main IPC: G02F1/1335
- IPC: G02F1/1335

Abstract:
In a retardation film (c plate) for canceling the optical effect of a liquid crystal layer, the optical effect of the liquid crystal layer which is represented by Δnd/λ increases as the wavelength λ of incident light decreases. Accordingly, in order to cancel this effect, a negative retardation needs to be reduced as the wavelength of incident light increases. In a retardation film (a plate) for rotating the direction of polarization of light, an in-plane retardation needs to be increased as the wavelength λ of incident light increases. It is preferable that both of these retardation films be placed. However, compared to known technologies, light leakage can be suppressed even using only any one of the retardation films.
Public/Granted literature
- US20060012738A1 Liquid crystal display device Public/Granted day:2006-01-19
Information query
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