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US 8,410,505 B2Granted
Light-emitting diode having a reflective layer between a transparent insulating layer and an electrode
AssigneeChi Mei Lighting Technology Corp.
InventorsChanghsin Chu, Kuohui Yu
Life of this patent
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Abstract
A light-emitting diode (LED) structure and a method for manufacturing the same. The LED structure includes a substrate, an illuminant epitaxial structure, first conductivity type and second conductivity type contact layers, a transparent insulating layer, first and second reflective layers, first and second barrier layers, and first conductivity type and second conductivity type electrodes.
Claims7
A light-emitting diode (LED) structure, comprising:
- a substrate;
- an illuminant epitaxial structure, comprising:
- a first conductivity type semiconductor layer, disposed on the substrate;
- an active layer, disposed on a first part of the first conductivity type semiconductor layer and exposing a second part of the first conductivity type semiconductor layer;
- and
- a second conductivity type semiconductor layer, disposed on the active layer and having a conductivity type different from that of the first conductivity type semiconductor layer;
- at least one first conductivity type contact layer, disposed on the second part of the first conductivity type semiconductor layer;
- at least one second conductivity type contact layer, disposed on the second conductivity type semiconductor layer;
- a transparent insulating layer, covering the illuminant epitaxial structure, the at least one first conductivity type contact layer and the at least one second conductivity type contact layer and having a top surface, wherein the transparent insulating layer comprises a first contact hole and a second contact hole respectively exposing a part of the at least one first conductivity type contact layer and a part of the at least one second conductivity type contact layer;
- a first reflective layer, covering sidewalls of the first contact hole, an exposed part of the at least one first conductivity type contact layer, and a part of the top surface of the transparent insulating layer;
- a second reflective layer, covering sidewalls of the second contact hole, an exposed part of the at least one second conductivity type contact layer, and the other part of the top surface of the transparent insulating layer;
- a first conductivity type electrode, disposed on the first reflective layer and filling up the first contact hole;
- and
- a second conductivity type electrode, disposed on the second reflective layer and filling up the second contact hole.
11 more elements
Dependencies are inferred from the claim text.