Method of manufacturing electroluminescent display device...

Details Method of manufacturing electroluminescent display device... Method of manufacturing electroluminescent display device...

2007-05-29

2007-05-29

Williams, Joseph (Department: 2879)

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

C445S025000

Reexamination Certificate

active

10378082

ABSTRACT:
A concave and convex portion is formed on the surface of the planarization insulating film. The surface of the anode also has a concave and convex portion, reflecting the concave and convex structure of the planarization insulating film. The hole transportation layer, the emissive layer, the electron transportation layer and the cathode are disposed on the anode through vacuum evaporation. The surface of the hole transportation layer, the emissive layer, the electron transportation layer, and the cathode has the concave and convex structure, respectively, reflecting the concave and convex structure on the surface of the anode. The effective light-emitting area of the emissive layer is larger than that of a conventional device. That is, a higher brightness can be achieved by increasing the effective light-emitting area of the EL device. Also, the life span of the EL device is extended while keeping its brightness at a conventional level.

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