Manufacturing process for solid state lighting device on a conductive substrate
First Claim
1. A method for fabricating a light emitting device, comprising:
- forming a trench in a first surface of a silicon substrate having the first surface and a second surface opposite to the first surface, leaving a portion of the first surface and a substrate exposed, the trench having a first sloped surface not parallel to the first or second surfaces of the substrate;
forming a light emission layer over the first sloped surfaced of the trench, but not over portion of the first surface of the substrate exposed; and
completely removing the substrate from the second surface of the substrate to expose the light emission layer within the first sloped of the trench, but not over the portion of the first surface of the substrate.
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Abstract
A method for fabricating a light emitting device includes forming a trench in a first surface on first side of a substrate. The trench comprises a first sloped surface not parallel to the first surface, wherein the substrate has a second surface opposite to the first surface of the substrate. The method also includes forming alight emission layer over the first trench surface, but not over the remainder of the first substrate surface, and removing at least a portion of the substrate from the second side of the substrate to expose the light emission layer and allow it to emit light out of the protrusion or protrusions on the second side of the substrate. These protrusions may be elongated pyramids.
82 Citations
18 Claims
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1. A method for fabricating a light emitting device, comprising:
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forming a trench in a first surface of a silicon substrate having the first surface and a second surface opposite to the first surface, leaving a portion of the first surface and a substrate exposed, the trench having a first sloped surface not parallel to the first or second surfaces of the substrate; forming a light emission layer over the first sloped surfaced of the trench, but not over portion of the first surface of the substrate exposed; and completely removing the substrate from the second surface of the substrate to expose the light emission layer within the first sloped of the trench, but not over the portion of the first surface of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification