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US 6,555,969 B2Granted
EL display device and manufacturing method thereof
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorShunpei Yamazaki
Life of this patent
Estimating the term…
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.
Claims44
A display device comprising:
- a substrate;
- a light emitting layer provided over said substrate;
- a conducting film comprising an anode and provided over said substrate, said anode provided over said light emitting layer;
- an input wiring provided over said substrate;
- an insulating film provided over said input wiring;
- an opening provided in said insulating film;
- wherein said conducting film is provided over said insulating film and in contact with said input wiring through said opening.
4 more elements
A display device comprising:
- a substrate;
- a cathode provided over said substrate;
- a light emitting layer provided over said cathode;
- a conducting film comprising an anode and provided over said substrate, said anode provided over said light emitting layer;
- an input wiring provided over said substrate;
- an insulating film provided over said input wiring;
- an opening provided in said insulating film;
- wherein said conducting film is provided over said insulating film and in contact with said input wiring through said opening, and
- wherein a surface of said cathode has a textured structure comprising projecting portions.
6 more elements
A display device comprising:
- a substrate;
- a light emitting layer provided over said substrate;
- a conducting film comprising an anode and provided over said substrate, said anode provided over said light emitting layer;
- a power supply line provided over said substrate;
- an insulating film provided over said power supply line;
- an opening provided in said insulating film;
- wherein said conducting film is provided over said insulating film and in contact with said power supply line through said opening.
4 more elements
A display device comprising:
- a substrate;
- a cathode provided over said substrate;
- a light emitting layer provided over said cathode;
- a conducting film comprising an anode and provided over said substrate, said anode provided over said light emitting layer;
- a power supply line provided over said substrate;
- an insulating film provided over said power supply line;
- an opening provided in said insulating film;
- wherein said conducting film is provided over said insulating film and in contact with said power supply line through said opening, and
- wherein a surface of said cathode has a textured structure comprising projecting portions.
6 more elements
A display device comprising:
- a substrate;
- a light emitting layer provided over said substrate;
- a conducting film comprising an anode and provided over said substrate, said anode provided over said light emitting layer;
- an input wiring provided over said substrate;
- an insulating film provided over said input wiring;
- a tapered opening provided in said insulating film;
- wherein said conducting film is provided over said insulating film and in contact with said input wiring through said opening.
4 more elements
A display device comprising:
- a substrate;
- a cathode provided over said substrate;
- a light emitting layer provided over said cathode;
- a conducting film comprising an anode and provided over said substrate, said anode provided over said light emitting layer;
- an input wiring provided over said substrate;
- an insulating film provided over said input wiring;
- a tapered opening provided in said insulating film;
- wherein said conducting film is provided over said insulating film and in contact with said input wiring through said opening, and
- wherein a surface of said cathode has a textured structure comprising projecting portions.
6 more elements
A display device comprising:
- a substrate;
- a light emitting layer provided over said substrate;
- a conducting film comprising an anode and provided over said substrate, said anode provided over said light emitting layer;
- a power supply line provided over said substrate;
- an insulating film provided over said power supply line;
- a tapered opening provided in said insulating film;
- wherein said conducting film is provided over said insulating film and in contact with said power supply line through said opening.
4 more elements
A display device comprising:
- a substrate;
- a cathode provided over said substrate;
- a light emitting layer provided over said cathode;
- a conducting film comprising an anode and provided over said substrate, said anode provided over said light emitting layer;
- a power supply line provided over said substrate;
- an insulating film provided over said power supply line;
- a tapered opening provided in said insulating film;
- wherein said conducting film is provided over said insulating film and in contact with said power supply line through said opening, and
- wherein a surface of said cathode has a textured structure comprising projecting portions.
6 more elements
Dependencies are inferred from the claim text.