Structure of LED, and fabricating method

Abstract

The structure of LED includes following parts: permanent baseplate possessing first surface; being located on the first surface, the metal layer is divided to first region and second region, and the first region is as first electrode; crystal grain is located at second region of the metal layer. The crystal grain includes at least stacked second electrode and luminous region. Through junction technique of crystal grain, the crystal grain is jointed to the second region of the metal layer so as to form electrical connection between metal layer and luminous region. Overcoming issue of light absorbed by base plate, the invention raises luminous efficiency greatly. Processing technique in low temperature for fusing chip and base plate does not deteriorate chip. Features are: high qualification rate of products, easy of heat elimination. The disclosed structure is suitable to application of LED in high power.

Description

technical field [0001] The present invention relates to a structure of a light emitting diode and a manufacturing method thereof, and in particular to a structure of a chip bonding light emitting diode and a manufacturing method thereof. Background technique [0002] Please refer to figure 1 , which is a schematic diagram of a known aluminum indium gallium phosphide quaternary light emitting diode (AlGaInP Quaternary Light Emitting Diode). The structure of the quaternary light emitting diode 100 grows a light emitting region (Light Emitting Region) 110 on an n-type doped GaAs (n-doped GaAs) substrate (Substrate) 102 . The light emitting region 110 includes an n-doped aluminum indium gallium phosphide (n-doped AlGaInP) layer 103 grown on an n-doped gallium arsenide substrate (n-doped GaAs) 102, grown on an n-doped phosphide Aluminum indium gallium phosphide active layer (AlGaInP Active layer) 104 on aluminum indium gallium (n-doped AlGaInP) layer 103, p-type doped aluminum ...

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Problems solved by technology

[0013] Similarly, before the temporary substrate 102 and the permanent substrate joint 122 are removed in the processing technology of the above-mentioned light emitting diode, the mechanical strength of the light-emitting region 110 is easily broken during the processing process due to the lack of the support of the temporary substrate 102, which also affects the quality of the processing technology. Pass rate

Furthermore, because the first and second electrodes are produced after the chip bonding step is completed, the process must go through the step of temperature fusion (Alloy), which makes the efficiency of the light emitting diode worse.

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