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US 2014/0175485 A1Published application
Light emitting diode with enhanced light extraction
AssigneeFormosa Epitaxy Incorporation
InventorsKeng-Ying Liao, Yu-Hsuan Liu
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Abstract
A light-emitting diode includes a substrate, a stacked semiconductor structure on one side of the substrate, and a reflection layer on the other side of the substrate opposite to the stacked semiconductor structure. At least one contact electrode is disposed on the stacked semiconductor structure. The contact electrode includes a pad electrode and at least one finger electrode extending from the pad electrode. A light-guiding structure is disposed along the finger electrode.
Claims13
A light-emitting diode, comprising:
- a substrate;
- a stacked semiconductor structure disposed on the substrate;
- at least one contact electrode electrically coupled with the stacked semiconductor structure;
- and
- at least one light-guiding structure comprising at least two inclined opposite sidewalls, and the light-guiding structure disposed between the contact electrode and the stacked semiconductor structure, wherein at least part of light emitted from the stacked semiconductor structure can be redirected to escape from at least one of the inclined opposite sidewalls.
2 more elements
A light-emitting diode, comprising:
- a substrate;
- an stacked semiconductor structure on the substrate, wherein the stacked semiconductor structure comprises a first layer, an active layer, and a second layer, wherein the active layer is sandwiched between the first layer and the second layer;
- a first contact electrode disposed on the second layer, wherein the first contact electrode comprising a first pad electrode and at least one first finger electrode extending from the first pad electrode;
- a second contact electrode disposed on a top surface of the first layer within an exposed region, wherein the second contact electrode comprising a second pad electrode and at least one second finger electrode extending from the second pad electrode;
- at least one light-guiding structure disposed under the first finger electrode;
- and
- a least two light-guiding structures separately disposed under the second finger electrode.
4 more elements
Dependencies are inferred from the claim text.