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Preparation method for light-emitting diode provided with white light photonic crystals

A technology of light-emitting diodes and photonic crystals, applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of high defect rate and long processing time of photonic crystals

Inactive Publication Date: 2013-07-24
GUANGDONG REAL FAITH LIGHTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method has the drawbacks of long processing time and high photonic crystal defect rate

Method used

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  • Preparation method for light-emitting diode provided with white light photonic crystals
  • Preparation method for light-emitting diode provided with white light photonic crystals
  • Preparation method for light-emitting diode provided with white light photonic crystals

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Embodiment Construction

[0014] A method for preparing a light-emitting diode with white light photonic crystals provided by the present invention will be described in detail below with reference to the accompanying drawings and specific examples.

[0015] Wherein, in the following description, various aspects of the present invention will be described. However, those skilled in the art can only use some or all structures or processes of the present invention to implement the present invention. For clarity of explanation, specific numbers, arrangements and sequences are set forth, but it will be apparent that the invention may be practiced without these specific details. In other instances, well-known features have not been described in detail in order not to obscure the invention.

[0016] In general, the present invention uses electron beam direct writing (Electron beam direct writing) in combination with nano-electromechanical (NEMS) to make a nano-scale microstructure metal shielding layer, and co...

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Abstract

The invention provides a preparation method for a light-emitting diode provided with white light photonic crystals. The preparation method comprises the following steps of: preparing a nanometer microstructure metal shielding layer in an electron beam direct-writing matching nano electromechanical mode; preparing yellow, red, green and blue fluorescent powder by using high-temperature transparentglues, printing fluorescent glues with various colors on the metal shielding layer at the position of a plastic base material, and baking to form nanometer microstructures with various colors; coating a polypropylene plastic film on the photonic crystals to form a protective film so as to realize white light photonic crystal attaching; and placing an uncut light-emitting diode (LED) wafer on a three-shaft dry film light resistance attaching machine, removing the plastic base material and the protective film, and performing baking and pulse laser annealing to attach the photonic crystals on anLED chip.

Description

technical field [0001] The invention relates to optical crystal technology, more specifically, to a method for preparing a light-emitting diode with white light photonic crystals. Background technique [0002] Photonic crystals are photonic bandgap materials. From the perspective of material structure, photonic crystals are artificially designed and manufactured crystals with periodic dielectric structures on the optical scale. The structure of photonic crystals is just like the periodic appearance of ions in the crystal lattice nodes of semiconductor materials. Photonic crystals are materials with low refractive index (such as artificially caused air holes) that periodically appear in certain positions of high refractive index materials. Materials with high and low refractive indices are arranged alternately to form a periodic structure, which can produce a photonic crystal band gap. However, the distances between the periodically arranged low-refractive index sites are th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/00H01L33/50H01L33/48
Inventor 王培贤苏晋平
Owner GUANGDONG REAL FAITH LIGHTING TECH