Light emitting diode structure

The utility model brings forward a light emitting diode structure. Similar triangular micro cavity structures are arranged in a substrate, by use of the refractive index differences between the substrate and cavities, a total-reflection critical angle is changed, the total reflection phenomenon is r...

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Bibliographic Details
Main Authors XU CHENKE, XU SHENGXIAN, LIN SUHUI, CHEN GONG, PENG KANGWEI
Format Patent
LanguageEnglish
Published 22.07.2015
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Summary:The utility model brings forward a light emitting diode structure. Similar triangular micro cavity structures are arranged in a substrate, by use of the refractive index differences between the substrate and cavities, a total-reflection critical angle is changed, the total reflection phenomenon is reduced, emission outwards of light emitted by a luminescent layer is effectively improved, and the light extraction efficiency of a light emitting diode is improved; compared to a conventional ball-type cavity, the volume of the cavity structures is effectively increased, and the proportion of reflected light is enhanced; and a reflection layer is arranged below the substrate in a match mode so that the extraction probability of the light from the side wall of a chip is further improved.
Bibliography:Application Number: CN20152198829U