Light-emitting elements
First Claim
1. A multi-color light-emitting element comprising a first optical micro-cavity structure having a first film of organic material providing a light-emitting region thereof and an optical length determining its emission wavelength, and a second optical micro-cavity structure having a second film of organic material providing a light-emitting region thereof and an optical length, different from said optical length of said first micro-cavity structure, determining its emission wavelength, whereby said emission wavelengths of said first and second optical micro-cavity structures are different from one another to provide multi-color light emission.
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Accused Products
Abstract
A multi-color light-emitting element has at least two optical micro-cavity structures having respectively different optical lengths determining their emission wavelengths. Each micro-cavity structure contains a film of or organic material as a light-emitting region, which may be a single film of uniform thickness in the element.
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Citations
27 Claims
- 1. A multi-color light-emitting element comprising a first optical micro-cavity structure having a first film of organic material providing a light-emitting region thereof and an optical length determining its emission wavelength, and a second optical micro-cavity structure having a second film of organic material providing a light-emitting region thereof and an optical length, different from said optical length of said first micro-cavity structure, determining its emission wavelength, whereby said emission wavelengths of said first and second optical micro-cavity structures are different from one another to provide multi-color light emission.
- 5. A multi-color light-emitting element having at least two optical micro-cavity structures, each said optical micro-cavity structure comprising at least a thin film of organic light-emitting material, at least two reflecting surfaces on opposite sides of said thin film and a path for light emission from said optical cavity structure, each said optical micro-cavity structure having an optical length determined by the spacing of said two reflecting surfaces thereof, wherein said optical lengths of said at least two optical micro-cavity structures are different from one another so that said optical micro-cavity structures emit light at different wavelengths provides multi-color light emission.
- 14. A multi-color light-emitting element having a substrate and, formed on said substrate, a plurality of pixels of each of at least two types respectively emitting light of different wavelength from one another to provide multi-color emission, each said pixel having an optical micro-cavity structure including, as a light-emitting region, a thin film of organic material for emitting light of the wavelength of the pixel, said optical micro-cavity structure having an optical length determining the peak wavelength of the light emitted by it under resonant condition.
- 16. A substrate for use in the manufacture of a multi-color light emitting element having a plurality of micro-cavities having optical lengths different from one another to provide multi-color light emission, comprising a transparent substrate, a half mirror structure formed on said substrate and comprised of a plurality of dielectric films and a transparent conductive layer formed on said half mirror structure.
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19. A multi-color light-emitting element comprising:
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a semitransparent reflective layer; a plurality of transparent conductive first electrodes formed as strips extending parallel to each other in a first direction; an organic light-emitting layer of substantially constant thickness formed over said plurality of transparent conductive first electrodes; and a plurality of second electrodes formed as strips extending over the organic light-emitting layer in a second direction, substantially perpendicular to said first direction, such that portions where the first electrodes intersect the second electrodes form pixels for emission of light from optical micro-cavities formed between the second electrodes and the semitransparent conductive first electrodes have different thicknesses from one another to provide different optical lengths of the optical micro-cavities corresponding thereto to thereby emit light at different wavelengths from one another to provide multi-color emission. - View Dependent Claims (21, 23, 25)
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20. A multi-color light-emitting element comprising:
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a semitransparent reflecting layer; a plurality of transparent conductive first electrodes formed as strips extending parallel to each other in a first direction; an organic light-emitting layer of substantially constant thickness formed over said plurality of transparent conductive first electrodes; and a plurality of spacers formed between said semitransparent reflective layer and said first electrodes, wherein said spacers have different thicknesses from one another to provide different optical lengths of the optical micro-cavities corresponding thereto to thereby emit light at different wavelengths from one another to provide multi-color emission. - View Dependent Claims (22, 24)
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26. A multi-color light-emitting element comprising:
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a semitransparent reflective layer; a plurality of transparent conductive first electrodes formed as strips extending parallel to each other in a first direction; and an organic light-emitting layer of substantially constant thickness formed over said plurality of transparent conductive first electrodes; wherein a first one of said transparent conductive first electrodes is formed directly on said semitransparent reflective layer to provide a first optical cavity having a first optical length such that said first optical micro-cavity emits light of a first wavelength, wherein a second one of said transparent conductive first electrodes is formed on a first spacer having a first predetermined thickness to provide a second optical micro-cavity having a second optical length so that said second optical micro-cavity emits light of a second wavelength, and wherein a third one of said transparent conductive first electrodes is formed on a second spacer having a second predetermined thickness to provide a third optical micro-cavity having a third optical length so that said third optical micro-cavity emits light of a third wavelength. - View Dependent Claims (27)
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Specification