High-brightness light emitting diode
First Claim
1. A high-brightness light emitting diode, comprising:
- an Si substrate;
a first adhesive layer formed on said Si substrate;
a reflective layer formed on said first adhesive layer;
an LED epitaxial layer formed on said reflective layer, having a pn junction structure to define a first-type layer and a second-type layer adjacent to said reflective layer, and having a metal contact layer formed by partial surface of said second-type layer;
a first-type ohmic contact electrode formed on said first-type layer of said LED epitaxial layer;
an a second-type ohmic contact electrode formed on said metal contact layer of said LED epitaxial layer.
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Abstract
The present invention discloses a high-brightness light emitting diode (LED), which primarily includes a LED epitaxial layer with a reflective layer and a Si substrate with an adhesive layer. The LED epitaxial layer is bonded with the Si substrate by attaching the reflective layer and the adhesive layer. An n-type ohmic contact electrode and a p-type ohmic contact electrode are deposed on the front side of the LED. In the present invention, the reflective layer, the adhesive layer and the ohmic contact electrodes preferably perform single function, so that the most appropriate materials can be applied. Therefore, the LED of the present invention can exhibit excellent brightness.
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Citations
17 Claims
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1. A high-brightness light emitting diode, comprising:
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an Si substrate;
a first adhesive layer formed on said Si substrate;
a reflective layer formed on said first adhesive layer;
an LED epitaxial layer formed on said reflective layer, having a pn junction structure to define a first-type layer and a second-type layer adjacent to said reflective layer, and having a metal contact layer formed by partial surface of said second-type layer;
a first-type ohmic contact electrode formed on said first-type layer of said LED epitaxial layer;
an a second-type ohmic contact electrode formed on said metal contact layer of said LED epitaxial layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification