Integrated color LED chip
First Claim
1. A multicolor display comprising a substrate;
- and at least one multicolor generation site coupled to said substrate, each of said at least one multicolor generation sites comprised of;
at least two light emitting regions proximate to one another; and
at least one wavelength conversion layer applied to at least one of said at least two light emitting regions, wherein said at least two light emitting regions in combination with said at least one wavelength conversion layer emit at least two different colors.
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Accused Products
Abstract
A method and apparatus for achieving multicolor displays using an integrated color chip is provided. The integrated color chip contains one or more multicolor generation sites on a single substrate. Each multicolor generation site is comprised of two or more light emitting regions in close proximity to one another, the number of light emitting regions per site dependent upon the number of required colors. The active light generation system for each light emitting region, e.g., an LED, is preferably identical in device structure although size and shape may vary. In order to achieve the desired colors, one or more light conversion layers are applied to individual light emitting regions. Each light emitting region may also include index matching layers, preferably interposed between the outermost surface of the light emitter and the light conversion layer, and protective layers. In order to minimize cross-talk and achieve improved contrast, opaque material is preferably deposited between adjacent light emitting regions. Cross-talk may also be minimized by locating the light emitting regions on a substantially non-reflective substrate.
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Citations
40 Claims
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1. A multicolor display comprising
a substrate; - and
at least one multicolor generation site coupled to said substrate, each of said at least one multicolor generation sites comprised of;
at least two light emitting regions proximate to one another; and
at least one wavelength conversion layer applied to at least one of said at least two light emitting regions, wherein said at least two light emitting regions in combination with said at least one wavelength conversion layer emit at least two different colors.
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2. A multicolor display comprising
a substrate; - and
a multicolor generation site grown on said substrate comprising;
at least two LEDs proximate to one another; and
a first wavelength conversion layer applied to a light emitting surface of a first of said at least two LEDs, wherein said at least two LEDs in combination with said first wavelength conversion layer emit at least two different colors. - View Dependent Claims (3, 4, 5)
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6. A multicolor display comprising
a substrate; - and
a plurality of multicolor generation sites grown on said substrate, each of said plurality of multicolor generation sites comprised of;
at least two LEDs proximate to one another; and
a wavelength conversion layer deposited on a light emitting surface of a first of said at least two LEDs, wherein said at least two LEDs in combination with said wavelength conversion layer emit at least two different colors. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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16. A multicolor display comprising
a substrate; - and
a plurality of multicolor generation sites grown on said substrate, each of said plurality of multicolor generation sites comprised of;
three LEDs proximate and immediately adjacent to one another;
a first wavelength conversion layer deposited on a light emitting surface of a first of said three LEDs; and
a second wavelength conversion layer deposited on a light emitting surface of a second of said three LEDs, wherein said three LEDs in combination with said first and second wavelength conversion layers emit three different wavelengths.
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31. A method of fabricating an active, multicolor display, comprising the steps of:
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defining a plurality of multicolor generation sites on a single substrate;
growing at least two LEDs on said substrate at each of said plurality of multicolor generation sites; and
depositing a wavelength conversion layer on a light emitting surface of at least one of said at least two LEDs at each of said plurality of multicolor generation sites.
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32. A method of fabricating an active, multicolor display, comprising the steps of:
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defining a plurality of multicolor generation sites on a single substrate;
growing three LEDs on said substrate at each of said plurality of multicolor generation sites;
depositing a first wavelength conversion layer on a light emitting surface of a first of said three LEDs at each of said plurality of multicolor generation sites; and
depositing a second wavelength conversion layer on a light emitting surface of a second of said three LEDs at each of said plurality of multicolor generation sites. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40)
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Specification