Patent Number: 7,710,028

Title: EL display device having pixel electrode with projecting portions and manufacturing method thereof

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.

Inventors: Yamazaki; Shunpei (Tokyo, JP)

Assignee: Semiconductor Energy Laboratory Co., Ltd.

International Classification: H05B 33/00 (20060101); H01J 1/62 (20060101); H05B 33/06 (20060101)

Expiration Date: 5/04/12018