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Patent Searching and Data


Title:
LIGHT-EMITTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/060531
Kind Code:
A1
Abstract:
Provided is a light-emitting apparatus capable of achieving improved reliability and maintenance of a prescribed reflectance while reducing pinholes in a reflection enhancing layer. The mounting substrate of the light-emitting apparatus has an aluminum base having a first face, and a multilayer film formed on the first face, said multilayer film having: a reflection layer for reflecting, in the upward direction of the light-emitting apparatus, light emitted from a light-emitting element toward the mounting substrate; a reflection enhancing layer for enhancing the reflection, in the upward direction of the light-emitting apparatus, of light emitted from the light-emitting element toward the mounting substrate; and an adhesive layer for adhering of the reflection layer and the reflection enhancing layer. The arithmetic mean roughness (Ra) of the surface of the multilayer film is 2.00 nm or less.

Inventors:
IINO TAKASHI (JP)
IMAI SADATO (JP)
AMEMIYA KEI (JP)
Application Number:
PCT/JP2020/036435
Publication Date:
April 01, 2021
Filing Date:
September 25, 2020
Export Citation:
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Assignee:
CITIZEN ELECTRONICS (JP)
CITIZEN WATCH CO LTD (JP)
International Classes:
H01L33/60; F21V19/00; H01L23/14; H01L33/22; H01L33/46
Foreign References:
JP2016025160A2016-02-08
JP2007194385A2007-08-02
JP2011171379A2011-09-01
JP2012099555A2012-05-24
JP2008112979A2008-05-15
JP2010114387A2010-05-20
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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