LED STRUCTURE WITH BRAGG FILM AND METAL LAYER

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20120043567A1
SERIAL NO

12858889

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention discloses an LED structure with a Bragg film and a metal layer, wherein a Bragg film and a metal layer are coated on a bottom of a sapphire substrate. The Bragg film includes two optical layers having different refractive indexes and alternately stacked. The materials and thickness of the optical layers of the Bragg film are optimized to form a high-reflectivity area via optical operation, which can effectively reflect the incident light generated by the light emitting layer from different incident angles. The Bragg film together with the metal layer can reflect the light, which is projected downward, to be emitted from the top or lateral of an LED structure. Therefore, the present invention can greatly increase the light-extraction efficiency of the LED structure.

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Patent Owner(s)

Patent OwnerAddress
HIGH POWER OPTO INCNO 8 KEYUAN 3RD RD XITUN DIST TAICHUNG CITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
LEE, Yea-Chen Hsinchu County, TW 12 98
YAN, Liang-Jyi Taipei County, TW 11 84

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