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US 7,008,858 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 method for manufacturing a light emitting diode comprising the steps of:
- forming an LED stack over a first substrate;
- forming a reflective layer over said LED stack;
- forming a first reaction layer over said reflective layer;
- forming a second reaction layer over a second substrate;
- and
- holding together said first reaction layer and said second reaction layer by means of an adhesive 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 polymide (PI), benzocyclobutene (BCB), and perfluorocyclobutane (PFCB).
6 more elements
Dependencies are inferred from the claim text.