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Light-emitting diode and method of manufacturing same

  • US 9,741,913 B2
  • Filed: 08/07/2012
  • Issued: 08/22/2017
  • Est. Priority Date: 08/11/2011
  • Status: Expired due to Fees
First Claim
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1. A method of manufacture of a light-emitting diode comprising a substrate upon which are sequentially provided a reflecting layer, a transparent film wherein multiple ohmic contact electrodes are embedded at intervals, and a compound semiconductor layer sequentially including a current diffusion layer and a light-emitting layer, which comprises the following steps in this order:

  • a step of forming a compound semiconductor layer that includes a light-emitting layer and a current diffusion layer on a growth substrate in this order;

    a step of forming multiple ohmic contact electrodes that are disposed at intervals on said current diffusion layer, wherein said ohmic contact electrodes are cylindrical members having a diameter of about 5 to 20 μ

    m;

    a step of forming a transparent film having a film thickness of 0.05 to 1.00 μ

    m on said current diffusion layer so as to cover a periphery of the surface facing the substrate of each of said multiple ohmic contact electrodes and so as to expose a part of the surface except for the covered periphery;

    a step of forming a reflecting layer on said transparent film, and on the exposed portions of said ohmic contact electrodes;

    a step of forming a bonding layer on said reflecting layer;

    a step of bonding a substrate to said bonding layer;

    and a step of removing said growth substrate,wherein current diffusion layer is composed of any one of GaP, {AlxGa(1-x)}(1-y)InyP, or {AlxGa(1-x)}(1-y)InyAs.

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