LED device structure to improve light output
First Claim
1. A light-emitting device, comprising:
- (a) a substrate;
(b) a plurality of LED elements formed over the substrate, each LED element including a transparent or semi-transparent electrode, a reflective electrode, and one or more layers, at least one of which is light-emitting, formed between the transparent or semi-transparent electrode and reflective electrode, the transparent or semi-transparent electrode and reflective electrode defining a single, controllable light-emitting area, whereby the plurality of LED elements comprise a plurality of different light-emitting materials, wherein the plurality of LED elements emit light into a waveguide defined by the respective transparent or semi-transparent electrode, reflective electrode, and the one or more layers; and
(c) one or more first topographical features and one or more second topographical features different from the first topographical features formed over the substrate throughout at least one LED element, and within a single, controllable light-emitting area, wherein the first and second topographical features disrupt the waveguiding of light within the single, controllable light-emitting area to increase the emission of light in at least one direction, and wherein the first or second topographical features are either indentations or extrusions.
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Accused Products
Abstract
A light-emitting device, including a substrate; a LED element formed over the substrate including a transparent or semi-transparent electrode, a reflective electrode, and one or more layers, at least one of which is light-emitting, formed between the transparent or semi-transparent electrode and reflective electrode, the transparent or semi-transparent electrode and reflective electrode defining a single, controllable light-emitting area, wherein the LED element emits light into a waveguide defined by the transparent or semi-transparent electrode, reflective electrode, and the one or more layers; and one or more first topographical features and one or more second topographical features different from the first topographical features formed over the substrate within the single, controllable light-emitting area, wherein the first and second topographical features disrupt the waveguiding of light within the single, controllable light-emitting area to increase the emission of light in at least one direction.
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Citations
17 Claims
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1. A light-emitting device, comprising:
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(a) a substrate; (b) a plurality of LED elements formed over the substrate, each LED element including a transparent or semi-transparent electrode, a reflective electrode, and one or more layers, at least one of which is light-emitting, formed between the transparent or semi-transparent electrode and reflective electrode, the transparent or semi-transparent electrode and reflective electrode defining a single, controllable light-emitting area, whereby the plurality of LED elements comprise a plurality of different light-emitting materials, wherein the plurality of LED elements emit light into a waveguide defined by the respective transparent or semi-transparent electrode, reflective electrode, and the one or more layers; and (c) one or more first topographical features and one or more second topographical features different from the first topographical features formed over the substrate throughout at least one LED element, and within a single, controllable light-emitting area, wherein the first and second topographical features disrupt the waveguiding of light within the single, controllable light-emitting area to increase the emission of light in at least one direction, and wherein the first or second topographical features are either indentations or extrusions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A light-emitting device, comprising:
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(a) a substrate; (b) a plurality of LED elements formed over the substrate, each LED element including a transparent or semi-transparent electrode, a reflective electrode, and one or more layers, at least one of which is light-emitting, formed between the transparent or semi-transparent electrode and reflective electrode, the transparent or semi-transparent electrode and reflective electrode defining a single, controllable light-emitting area, whereby the plurality of LED elements comprise a plurality of the light-emitting materials, wherein the plurality of LED elements emit light into a waveguide defined by the respective transparent or semi-transparent electrode, reflective electrode, and the one or more layers; and (c) one or more first topographical features and one or more second topographical features different from the first topographical features formed over the substrate throughout at least one LED element, and within a single, controllable light-emitting area, wherein the first and second topographical features disrupt the waveguiding of light within the single, controllable light-emitting area to increase the emission of light in at least one direction, and wherein the first and second topographical features are large enough to maintain a non-planar structure as the layers in the LED element are deposited.
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Specification