Invention Grant
US07710028B2 EL display device having pixel electrode with projecting portions and manufacturing method thereof
失效
具有突出部分的像素电极的EL显示装置及其制造方法
- Patent Title: EL display device having pixel electrode with projecting portions and manufacturing method thereof
- Patent Title (中): 具有突出部分的像素电极的EL显示装置及其制造方法
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Application No.: US12208528Application Date: 2008-09-11
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Publication No.: US07710028B2Publication Date: 2010-05-04
- Inventor: Shunpei Yamazaki
- Applicant: Shunpei Yamazaki
- Applicant Address: JP
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP
- Agency: Cook Alex Ltd.
- Priority: JP11-250965 19990903; JP11-336249 19991126
- Main IPC: H05B33/00
- IPC: H05B33/00 ; H05B33/06 ; H01J1/62

Abstract:
Reducing the manufacturing cost of an EL display device and an electronic device furnished with the EL display device is taken as an objective. A textured structure in which projecting portions are formed on the surface of a cathode is used. External stray light is diffusely (irregularly) reflected by the action of the projecting portions when reflected by the surface of the cathode, and therefore a defect in which the face of an observer or the surrounding scenery is reflected in the surface of the cathode can be prevented. This can be completed without using a conventionally necessary high price circular polarizing film, and therefore it is possible to reduce the cost of manufacturing the EL display device.
Public/Granted literature
- US20090051270A1 EL Display Device and Manufacturing Method Thereof Public/Granted day:2009-02-26
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