HIGHLY EFFICIENT LED WITH MICROCOLUMN ARRAY EMITTING SURFACE
First Claim
1. A light emitting diode comprising a two-dimensional microcolumn array, wherein said two-dimensional microcolumn array is etched on the surface of a P-type GaN layer.
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Abstract
A highly efficient light emitting diode with microcolumn array emitting surface, wherein the microcolumn array is prepared on the emitting surface of the light emitting diode, and can be formed with a two-dimensional periodic or non-periodic structure, the length and height of each microcolumn are in the same order of magnitude as, more specifically are from half to a few of, the wavelength of the emitting light. This invention utilizes a strong diffraction effect of the microcolumn array to increase the luminous efficiency of the light emitting diode. The distribution of light emitting is uniform. Compared with the conventional two-dimensional photonic crystal light emitting diode, the manufacturing process of this invention is simple, and the manufacturing cost is low. Compared with the conventional porous surface light emitting diode, the luminous efficiency of the light emitting diode according to this invention is high.
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Citations
5 Claims
- 1. A light emitting diode comprising a two-dimensional microcolumn array, wherein said two-dimensional microcolumn array is etched on the surface of a P-type GaN layer.
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