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1. US20110255281 - Light-emitting device, light-emitting module, and method for manufacturing light-emitting device

Office United States of America
Application Number 13142171
Application Date 16.12.2009
Publication Number 20110255281
Publication Date 20.10.2011
Grant Number 08366294
Grant Date 05.02.2013
Publication Kind B2
IPC
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21
LIGHTING
V
FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
7
Reflectors for light sources
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
33
Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
48
characterised by the semiconductor body packages
58
Optical field-shaping elements
60
Reflective elements
F21V 7/00
H01L 33/60
CPC
H01L 33/60
H01L 33/641
Applicants Showa Denko K.K.
Inventors Takei Tomoyuki
Miki Hisayuki
Agents Sughrue Mion, PLLC
Priority Data 2008331579 25.12.2008 JP
Title
(EN) Light-emitting device, light-emitting module, and method for manufacturing light-emitting device
Abstract
(EN)

A light-emitting chip (22) includes: a container (30) having a concave portion (31); first to fourth lead portions (61) to (64), provided to be exposed to the concave portion (31); and a first blue LED to a fourth blue LED (74) mounted on the first to fourth lead portions (61) to (64) exposed to the concave portion (31). The container (30) includes a first container portion (40) covering the region of the concave portion (31) where the first to fourth lead portions (61) to (64) are not exposed, and a second container portion (50) contacting the first to fourth lead portions (61) to (64) without being exposed to the concave portion (31) and accommodating the first container portion (40). The first container portion (40) is formed of a material having higher light reflectivity than that of the second container portion (50), and the second container portion (50) is formed of a material having higher thermal conductivity than that of the first container portion (40). Thus, a decrease in extraction efficiency for light emitted from a light-emitting element can be suppressed, and a rise in the temperature of the light-emitting element in response to the light emission can be suppressed.

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