Invention Grant
- Patent Title: Display device
- Patent Title (中): 显示设备
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Application No.: US11613654Application Date: 2006-12-20
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Publication No.: US07804559B2Publication Date: 2010-09-28
- Inventor: Yuji Egi , Tetsuji Ishitani , Takeshi Nishi
- Applicant: Yuji Egi , Tetsuji Ishitani , Takeshi Nishi
- Applicant Address: JP Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi-shi, Kanagawa-ken
- Agency: Fish & Richardson P.C.
- Priority: JP2005-380220 20051228
- Main IPC: G02F1/1335
- IPC: G02F1/1335
Abstract:
A display device with a higher contrast ratio is provided. The display device is provided with stacked polarizing plates arranged displaced from a parallel nicol state. Moreover, in the display device, at least one of a pair of stacked polarizing plates is displaced from a parallel state. The pair of stacked polarizing plates is arranged in a cross nicol state. A retardation plate may be provided between the polarizing plate and the substrate. As a result, the contrast ratio can be increased.
Public/Granted literature
- US20070146579A1 DISPLAY DEVICE Public/Granted day:2007-06-28
Information query
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