Light-emitting element and display device using same
First Claim
1. A light-emitting element comprising:
- a light-emitting layer having a flat surface at least a portion therein; and
a tilted reflective surface is made in a peripheral area surrounding said flat surface of light-emitting layer and has a tilt angle against said flat surface of said light-emitting layer, wherein, an optical waveguide layer is overlaid in an area surrounded by said tilted reflective surface on said light-emitting layer, and wherein, said optical waveguide layer is optically isolated by said tilted reflective surface.
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Abstract
A self light emitting display device having high level of the external coupling efficiency and high grade image presentation as no optical cross-talk or blur can be obtained by a new light-emitting element. The device is constructed as follows. A plurality of picture elements, each of which picture elements has an organic layer composing light emitting areas, a transparent electrode and a reflective electrodes, are formed on a substrate. Between the picture elements, a bank which has a tilted reflective surface is formed so that the light emitting area is surrounded by the bank wherein the transparent optical waveguide layer is formed as optically isolated for each of the picture elements.
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Citations
18 Claims
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1. A light-emitting element comprising:
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a light-emitting layer having a flat surface at least a portion therein; and
a tilted reflective surface is made in a peripheral area surrounding said flat surface of light-emitting layer and has a tilt angle against said flat surface of said light-emitting layer, wherein, an optical waveguide layer is overlaid in an area surrounded by said tilted reflective surface on said light-emitting layer, and wherein, said optical waveguide layer is optically isolated by said tilted reflective surface. - View Dependent Claims (2)
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3. A display device having a plurality of light-emitting elements that construct picture elements aligned on a substrate in a formation of a matrix wherein, said light-emitting element comprising:
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a light-emitting layer having a flat surface at least a portion therein; and
a tilted reflective surface is made in a peripheral area surrounding said flat surface of light-emitting layer and has a tilt angle against said flat surface of said light-emitting layer, wherein, an optical waveguide layer is overlaid in an area surrounded by said tilted reflective surface on said light-emitting layer, and wherein, said optical waveguide layer is optically isolated from each of said picture element. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification