LIGHT EMITTING DIODE PACKAGE HAVING MULTI-STEPPED REFLECTING SURFACE STRUCTURE AND FABRICATION METHOD THEREOF
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Abstract
A high luminance and high output LED package using an LED as a light source and a fabrication method thereof. The LED package includes an Al substrate with a recessed multi-stepped reflecting surface formed therein and a light source composed of LEDs mounted on the reflecting surface and electrically connected to patterned electrodes. The LED package also includes anodized insulation layers formed between the patterned electrodes and the substrate, and an encapsulant covering over the light source of the substrate. The LED package further includes an Al heat radiator formed under the LEDs to enhance heat radiation capacity. According to the present invention, the substrate is made of Al material and anodized to form insulation layers thereon, allowing superior heat radiation effect of the LED, thereby significantly increasing the lifetime and light emission efficiency of the LED package.
21 Citations
7 Claims
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1-3. -3. (canceled)
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4. A method of fabricating an LED package having a multi-stepped reflecting surface structure, comprising:
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etching a surface of a substrate to integrally form a reflecting surface; anodizing surfaces of the substrate to form insulation layers; coating a highly reflective metallic material on the reflecting surface; forming patterned electrodes on the insulation layers of the substrate; mounting a light source on the substrate and electrically connecting the light source to the patterned electrodes; and forming an encapsulant over the light source of the substrate. - View Dependent Claims (5, 6, 7)
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Specification