Display device with anode contacting input-output wiring through opening in insulating film
View Patent ↗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.
1. A display device comprising:
a substrate;
a base film formed over said substrate;
an input-output wiring provided over said base film;
an insulating film comprising a resin over said input-output wiring, said insulating film having an opening;
an anode formed over said insulating film and extending into said opening to contact said input-output wiring;
a cathode formed opposite said anode; and
a light emitting layer formed over said substrate and between said cathode and said anode,
wherein said input-output wiring extends beyond a side edge of said insulating film,
wherein said cathode has projecting portions, and
wherein a spacing between the projecting portions is in the range of 0.05 to 1 μm.
2. A device according to claim 1 further comprising a passivation film provided over said anode.
3. A device according to claim 1 wherein said display device is incorporated into one selected from the group consisting of a video camera, a digital camera, a goggle type display, a game machine, a car navigation system, a personal computer, a portable information terminal, a mobile computer, a portable telephone, an electronic book and an image playback device.
4. A device according to claim 1 wherein said light emitting layer comprises an organic light emitting layer.
5. A display device comprising:
a substrate;
a base film over said substrate;
a source wiring provided over said substrate;
an input-output wiring provided over said base film and provided in a same layer as said source wiring;
an insulating film comprising a resin over said input-output wiring, said insulating film having an opening;
an anode formed over said insulating film and extending into said opening to contact said input-output wiring;
a cathode formed opposite said anode; and
a light emitting layer formed between said cathode and said anode,
wherein said input-output wiring extends beyond a side edge of said insulating film,
wherein said cathode has projecting portions, and
wherein a spacing between the projecting portions is in the range of 0.05 to 1 μm.
6. A device according to claim 5 wherein said display device is incorporated into one selected from the group consisting of a video camera, a digital camera, a goggle type display, a game machine, a car navigation system, a personal computer, a portable information terminal, a mobile computer, a portable telephone, an electronic book and an image playback device.
7. A device according to claim 5 wherein said light emitting layer comprises an organic light emitting layer.
8. A display device comprising:
a substrate;
a base film over said substrate;
a drain wiring provided over said substrate;
an input-output wiring provided over said base film and provided in a same layer as said drain wiring;
an insulating film comprising a resin over said input-output wiring, said insulating film having an opening;
an anode formed over said insulating film and extending into said opening to contact said input-output wiring;
a cathode formed opposite said anode; and
a light emitting layer formed between said cathode and said anode,
wherein said input-output wiring extends beyond a side edge of said insulating film,
wherein said cathode has projecting portions, and
wherein a spacing between the projecting portions is in the range of 0.05 to 1 μm.
9. A device according to claim 8 wherein said display device is incorporated into one selected from the group consisting of a video camera, a digital camera, a goggle type display, a game machine, a car navigation system, a personal computer, a portable information terminal, mobile computer, a portable telephone, an electronic book and an image playback device.
10. A device according to claim 8 wherein said light emitting layer comprises an organic light emitting layer.
11. A display device comprising:
a substrate;
a base film over said substrate;
a TFT provided over said substrate;
a cathode provided over said substrate and connected with one of a source region and a drain region of said TFT;
a light emitting layer provided over said cathode;
an input-output wiring provided over said base film;
an insulating film comprising a resin over said input-output wiring, said insulating film having an opening; and
an anode formed over said insulating film and extending into said opening to contact said input-output wiring,
wherein said input-output wiring extends beyond a side edge of said insulating film,
wherein said cathode has projecting portions, and
wherein a spacing between the projecting portions is in the range of 0.05 to 1 μm.
12. A device according to claim 11 wherein said display device is incorporated into one selected from the group consisting of a video camera, a digital camera, a goggle type display, a game machine, a car navigation system, a personal computer, a portable information terminal, a mobile computer, a portable telephone, an electronic book and an image playback device.
13. A device according to claim 11 wherein said light emitting layer comprises an organic light emitting layer.
14. A display device comprising:
a substrate;
a base film formed over said substrate;
a cathode formed over said substrate;
a light emitting layer provided over said cathode;
an anode provided over said light emitting layer;
an input-output wiring provided over said base film for imparting a voltage to said anode;
an insulating film comprising a resin over said input-output wiring, said insulating film having an opening; and
a passivation film to cover an edge of said insulating film and contact with said input-output wiring,
wherein said anode is provided over said insulating film and extending into said opening to contact said input-output wiring,
wherein said cathode has projecting portions, and
wherein a spacing between the projecting portions is in the range of 0.05 to 1 μm.
15. A device according to claim 14 wherein said display device is incorporated into one selected from the group consisting of a video camera, a digital camera, a goggle type display, a game machine, a car navigation system, a personal computer, a portable information terminal, a mobile computer, a portable telephone, an electronic book and an image playback device.
16. A device according to claim 14 wherein said light emitting layer comprises an organic light emitting layer.