Title:
ULTRAVIOLET LED LIGHT SOURCE FLIP CHIP STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2019/056630
Kind Code:
A1
Abstract:
Disclosed in the present invention is an ultraviolet light-emitting diode (LED) light source flip chip structure, comprising: a substrate, and a buffer and nucleation layer, a superlattice structure, a n-type conductive layer, a quantum well active region, an electron blocking layer, a p-type conductive layer, a current expanding layer, and a metal reflective layer, which are sequentially provided in a first direction; a first electrode groove that penetrates the metal reflective layer and part of the current expanding layer; a second electrode groove that penetrates the n-type conductive layer, the quantum well active region, the electron blocking layer, the p-type conductive layer, the current expanding layer, and the metal reflective layer; a p electrode that is connected to the first electrode groove, and an n electrode that is connected to the second electrode groove; a ring-shaped metal strip structure that is provided on a side of an epitaxial layer structure that faces away from the substrate, the ring-shaped metal strip structure providing a ring-shaped package for the p electrode and the n electrode, and being connected to the p electrode but not connected to the n electrode. The ultraviolet LED light source flip chip structure has the advantages of high light emitting efficiency, resistance to damage caused by electrostatic discharge, fast heat dissipation, aging resistance, and high reliability.
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Inventors:
HE MIAO (CN)
YANG SIPAN (CN)
WANG CHENGMIN (CN)
ZHOU HAILIANG (CN)
YANG SIPAN (CN)
WANG CHENGMIN (CN)
ZHOU HAILIANG (CN)
Application Number:
PCT/CN2017/117622
Publication Date:
March 28, 2019
Filing Date:
December 21, 2017
Export Citation:
Assignee:
UNIV GUANGDONG TECHNOLOGY (CN)
International Classes:
H01L33/38; H01L33/48; H01L33/58; H01L33/60; H01L33/62; H01L33/64
Domestic Patent References:
| WO2015036443A1 | 2015-03-19 |
Foreign References:
| CN106981563A | 2017-07-25 | |||
| CN101897046A | 2010-11-24 | |||
| CN107195743A | 2017-09-22 | |||
| CN102157662A | 2011-08-17 | |||
| CN204144307U | 2015-02-04 | |||
| CN104377291A | 2015-02-25 | |||
| CN105934834A | 2016-09-07 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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