Substrate for mounting light-emitting element and light-emitting device

A technology for light-emitting elements and light-emitting devices, applied in the field of light-emitting devices and substrates for mounting light-emitting elements, can solve the problems of deviation, inability to fully increase the proportion of light reflected to the front of the substrate, damage to the optical axis, etc., to suppress tilt and reduce light distribution. The effect of uneven characteristics and less loss of light

Inactive Publication Date: 2011-12-14
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is a problem that almost all the light entering the substrate from the light-emitting element is scattered in the substrate, so the ratio of light reflected to the front of the substrate cannot be sufficiently increased.
[0011] In addition, if the mounting part has unevenness, the fixed light-emitting element may be tilted, and damage or optical axis deviation may occur due to subsequent wire bonding.

Method used

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  • Substrate for mounting light-emitting element and light-emitting device
  • Substrate for mounting light-emitting element and light-emitting device
  • Substrate for mounting light-emitting element and light-emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0179] The above-mentioned composition 1 for the first protective layer and the resin component were blended at a ratio of 60% by mass of the glass ceramic composition and 40% by mass of the resin component, kneaded in a magnetic mortar for 1 hour, and then carried out 3 times with three rollers. Disperse to prepare glass paste 1 for the first protective layer.

[0180] In addition, the glass-ceramic composition 1 for the second protective layer and the resin component were mixed at a ratio of 60% by mass of the glass-ceramic composition and 40% by mass of the resin component, kneaded in a magnetic mortar for 1 hour, and then carried out with three rollers. Dispersion was carried out three times to prepare glass paste 1 for the second protective layer. In addition, as the resin component, a resin component obtained by preparing and dispersing ethyl cellulose and α-terpineol at a mass ratio of 85:15 was used.

[0181] Next, the substrate main body green sheet 2 is produced.

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Abstract

To provide a substrate for a light-emitting element, being less susceptible to the loss of light supplied from a light emitting element, having high utilization efficiency of light, being excellent in flatness of a mounting surface on which a light-emitting element is to be mounted, and having a low heat resistance, when used for a light-emitting device. A substrate 1 for mounting a light-emitting element, which comprises a substrate main body 2, a reflection layer 6 composed mainly of silver (Ag) or a silver alloy, formed on a part of the substrate main body 2, a first protective layer 7 composed mainly of a sintered product of a glass powder, formed so as to cover the entire surface of the reflection layer 6, and a second protective layer 8 a part which constitutes a mounting portion 10 on which a light-emitting element is to be mounted, formed on the first protective layer 7, wherein the first protective layer 7 contains substantially no alumina filler, and further the second protective layer 8 is made of a sintered product of a glass powder containing a ceramic filler 9.

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 in which a mounting surface on which a light-emitting element is mounted has good flatness and a decrease in light extraction efficiency is suppressed, and a light-emitting device using the substrate. Background technique [0002] In recent years, light-emitting devices using light-emitting diode elements (LEDs) have been used as lighting, various displays, and backlights for large-scale liquid crystal televisions, etc., as light-emitting diode elements (chips) have become brighter and whiter. Generally, a substrate for mounting a light-emitting element on which a light-emitting diode element is mounted is required to have high reflectivity to efficiently reflect light emitted from the element. [0003] However, there is a problem that almost all t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48H01L33/56H01L33/60H01L33/64
CPCH01L33/60H01L33/44H01L33/486H01L2924/0002H01L2224/48091H01L2224/48227H01L2924/181H01L2924/00014H01L2924/00012H01L33/48
Inventor 中山胜寿
Owner ASAHI GLASS CO LTD
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