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US 7,009,217 B2Granted
Light emitting diode having an adhesive layer and a reflective layer and manufacturing method thereof
AssigneeEpistar Corporation
InventorsWen-Huang Liu, Tzu-Feng Tseng, Min-Hsun Hsieh, Ting-Wei Yeh, Jen-Shui Wang
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Abstract
A light emitting diode having an adhesive layer and a reflective layer and a manufacturing method thereof featured by adhering together a light emitting diode stack and a substrate having a reflective metal layer by use of a transparent adhesive layer so that the light rays directed to the reflective metal layer can be reflected therefrom to improve the brightness of the light emitting diode.
Claims6
A light emitting diode comprising:
- a substrate;
- a first reaction layer formed over the substrate;
- an adhesive layer formed over said first reaction layer;
- a second reaction layer formed over said adhesive layer;
- a reflective layer formed over said second reaction layer;
- and
- an LED stack formed over said reflective layer,
- wherein each of the first and second reaction layers comprises at least a material selected from the group consisting of SiNx, Ti, and Cr, and is formed to enhance an adhesion provided by the adhesive layer;
- and
- wherein said adhesive layer comprises a material selected from the group consisting of polyimide (P1), benzocyclobutene (BCB), and perfluorocyclobutane (PFCB).
7 more elements
Dependencies are inferred from the claim text.