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US 6,057,647 AGranted
Light emitting device used for display device
AssigneeCasio Computer Co., Ltd.
InventorsHiroshi Kurosawa, Tomoyuki Shirasaki, Hiroyasu Jobetto
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Abstract
In the present invention, a partition wall having a matrix shape is formed on anode electrodes so as to divide them further into dots of a small region, which are surrounded by the partition wall. With this structure, if a dark spot which is a non-light emitting region, is created in one dot, the growth of the spot can be stopped by the partition wall. Therefore, good display property can be maintained for a long time.
Claims13
A display device having a plurality of pixels each comprising:
- a first electrode;
- a partition wall having a plurality of openings, formed on said first electrode;
- a plurality of light emitting layers surrounded by said partition wall, formed respectively in said plurality of openings of said partition wall;
- a plurality of conductive layers surrounded by said partition wall, formed respectively on said plurality of light emitting layers;
- and
- a second electrode formed to cover said plurality of conductive layers and said partition wall.
3 more elements
A display device comprising:
- a plurality of anodes;
- a plurality of cathodes;
- wherein one of said plurality of anodes and one of said plurality of cathodes cross to make a region which functions as a pixel,
- a partition wall having a plurality of openings to expose the anode, formed on each pixel;
- light emitting layers formed in said plurality of openings of said partition wall, to be separated from each other;
- and
- electro-conductive layers formed on said light emitting layers formed in said plurality of openings of said partition wall, to be separated from each other;
- wherein said cathodes covers the electro-conductive layers and said partition wall.
5 more elements
Dependencies are inferred from the claim text.