DEEP-ULTRAVIOLET LED AND METHOD FOR MANUFACTURING SAME

Title:

DEEP-ULTRAVIOLET LED AND METHOD FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2017/038961

Kind Code:

A1

Abstract:

A deep-ultraviolet LED having a design wavelength of λ and comprising a reflective electrode layer, an extremely thin-film metal layer, and a p-type contact layer which are disposed in that order from an opposite side from a substrate. The deep-ultraviolet LED further comprises a hemispherical lens which is bonded to a backside of the substrate on the p-type contact layer side and which is transparent to the wavelength λ, and is characterized in that the hemispherical lens has a refractive index which is greater than or equal to an average value of a refractive index of the substrate and a refractive index of air and which is within the refractive index of the substrate, the hemispherical lens having a radius greater than or equal to the radius of the inscribed circle of the substrate and on the order of the radius of the circumscribed circle thereof.

Inventors:

KASHIMA YUKIO (JP)
MATSUURA ERIKO (JP)
KOKUBO MITSUNORI (JP)
TASHIRO TAKAHARU (JP)
HIRAYAMA HIDEKI (JP)
KAMIMURA RYUICHIRO (JP)
OSADA YAMATO (JP)
MORITA TOSHIRO (JP)

Application Number:

PCT/JP2016/075756

Publication Date:

March 09, 2017

Filing Date:

September 02, 2016

Export Citation:

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Assignee:

MARUBUN CO LTD (JP)
TOSHIBA MACHINE CO LTD (JP)
RIKEN (JP)
ULVAC INC (JP)
TOKYO OHKA KOGYO CO LTD (JP)

International Classes:

H01L33/10; H01L33/00; H01L33/32; H01L33/36

Foreign References:

JP5757512B1	2015-07-29
JP2002305328A	2002-10-18
JP2015041763A	2015-03-02

Other References: