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Substrate for mounting light-emitting element and light-emitting device employing the substrate

A light-emitting element and substrate technology, which is applied in the field of light-emitting devices and substrates for mounting light-emitting elements. It can solve the problems of warping of the glass layer substrate and not being suitable for products, and achieve the effect that the reflectivity is not easy to decrease and the luminous efficiency is good.

Inactive Publication Date: 2011-10-12
AGC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the glass layer described in this publication is crystallized during firing, there is a large difference between the shrinkage of the substrate during firing and the shrinkage of the glass layer, resulting in warping of the substrate after firing, which is not suitable for use in product
In addition, when the silver reflective layer reacts with the glass layer during firing, there is also a problem of so-called silver coloration that changes from yellow to brown.

Method used

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  • Substrate for mounting light-emitting element and light-emitting device employing the substrate
  • Substrate for mounting light-emitting element and light-emitting device employing the substrate
  • Substrate for mounting light-emitting element and light-emitting device employing the substrate

Examples

Experimental program
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Effect test

Embodiment 1

[0062] First, a green sheet for obtaining the substrate main body 1 for mounting a light-emitting element is produced. The green sheet was produced as follows. According to 60.4 mol% SiO 2 , 15.6 mol% B 2 o 3 , 6 mol% Al 2 o 3 , 15 mol% CaO, 1 mol% K 2 O, 2 mol% Na 2 The proportion of O is blended and mixed, and the raw material mixture is put into a platinum crucible and melted at 1600° C. for 60 minutes, and then the molten glass is poured out and cooled. The glass was pulverized by an alumina ball mill for 40 hours to obtain a glass powder for a substrate main body. In addition, ethanol was used as a solvent during pulverization.

[0063] 40% by mass of the glass powder for the substrate main body and 60% by mass of alumina filler (manufactured by Showa Denko Co., Ltd., trade name: AL-45H) were blended and mixed to prepare a glass ceramic composition. Into 50 g of the glass-ceramic composition, 15 g of an organic solvent (a solvent obtained by mixing toluene, xylen...

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Abstract

To provide a substrate for mounting a light-emitting element, which is provided with a reflection layer having a high optical reflectance and being less susceptible to deterioration of the reflectance due to corrosion and which has an improved light extraction efficiency and heat dissipation property, and a light-emitting device employing such a substance. A substrate for mounting a light-emitting element, which comprises a substrate main body having a mounting surface on which a light-emitting element is to be mounted, a reflection layer formed on a part of the mounting surface of the substrate main body and containing silver, and a vitreous insulating layer formed on the reflection layer and composed of glass and a ceramic filler, wherein the vitreous insulating layer has a surface swell of at most 5 [mu]m in a span of 300 [mu]m.

Description

technical field [0001] The present invention relates to a substrate for mounting a light-emitting element and a light-emitting device using the substrate, and more particularly to a substrate for mounting a light-emitting element capable of preventing a decrease in reflectance, and a light-emitting device using the substrate. Background technique [0002] In recent years, light-emitting devices using light-emitting elements have been used as lighting, various displays, and backlights for large-scale liquid crystal televisions, etc., as light-emitting diode elements (light-emitting elements) have become brighter and whiter. Generally, a substrate for mounting a light-emitting element on which a light-emitting element is mounted is required to have high reflectivity capable of efficiently reflecting light emitted from the element. [0003] Therefore, currently, it is attempted to provide a reflective layer on the surface of the substrate for the purpose of reflecting the light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48H01L33/64H01L33/60H01L25/075
CPCH01L33/60H01L2224/48091H01L2224/48137H01L2224/48227H01L2224/45144H01L2924/181H01L2924/00014H01L2924/00H01L2924/00012H01L33/48
Inventor 谷田正道冈田利久
Owner AGC INC
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