JP2007027431A - 発光装置 - Google Patents
発光装置 Download PDFInfo
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- JP2007027431A JP2007027431A JP2005207673A JP2005207673A JP2007027431A JP 2007027431 A JP2007027431 A JP 2007027431A JP 2005207673 A JP2005207673 A JP 2005207673A JP 2005207673 A JP2005207673 A JP 2005207673A JP 2007027431 A JP2007027431 A JP 2007027431A
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- H01L33/00—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
- H01L33/02—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 characterised by the semiconductor bodies
- H01L33/20—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 characterised by the semiconductor bodies with a particular shape, e.g. curved or truncated substrate
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- H01L33/48—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 characterised by the semiconductor body packages
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
- H01L2224/45001—Core members of the connector
- H01L2224/45099—Material
- H01L2224/451—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
- H01L2224/45144—Gold (Au) as principal constituent
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H01L2924/01004—Beryllium [Be]
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- H01L2924/01012—Magnesium [Mg]
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L2924/01—Chemical elements
- H01L2924/01057—Lanthanum [La]
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01063—Europium [Eu]
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01078—Platinum [Pt]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01079—Gold [Au]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/301—Electrical effects
- H01L2924/3025—Electromagnetic shielding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—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
- H01L33/48—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 characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/505—Wavelength conversion elements characterised by the shape, e.g. plate or foil
Abstract
【解決手段】容器、前記容器内に配置され、SiC基板を有する上面が多角形の発光チップ(1)、発光チップ(1)の上面に設けられた電極パッド(5)、前記容器の底面に設けられたリード電極(7)、発光チップ1上面の角部の上方を経由し、発光チップ(1)の側面を縦方向に画定する辺(4a)に沿って設けられ、電極パッド(5)とリード電極(7)とを接続する導電性ワイヤー(6)、および、発光チップ(1)を封止し、蛍光体が透光性部材に分散されてなる蛍光体層を具備することを特徴とする。
【選択図】図2
Description
SiC基板やGaN基板等の半導体基板を用いたLEDチップにおいては、正電極および負電極は、LEDチップの上面および下面に形成され、こうした半導体基板を用いたLEDチップは、光取り出し効率を改善するために素子基板の側面部分が斜め方向に加工されている。これによって、チップの上面だけでなく、斜めに加工した側面からも発光が得られる。こうした構造において、チップが覆われずに露出してしまう部分が生じ、これによって色ずれの原因ともなる。(例えば、特許文献2参照)
一般に、蛍光体は、粒径が大きいほど光変換効率が高いので、大粒径の蛍光体を高濃度に含有する蛍光体層でLEDチップをコーティングすることが望ましい。蛍光体を含有した樹脂をLEDチップに塗布する際、樹脂は導電性ワイヤーに引き寄せられやすく、LEDチップ周辺に均一な厚さの蛍光体層を形成できない。また、大粒径の蛍光体は沈降しやすいため導電性ワイヤーの下に回りこみにくく、蛍光体層における蛍光体の密度が不均一となる。不均一な厚さの蛍光体層や蛍光体の大きな密度分布は、色むらの原因となる。
前記容器内に配置され、半導体基板を有する上面が多角形の発光チップ、
前記発光チップの上面に設けられた電極パッド、
前記容器の底面に設けられた第1のリード電極、
前記発光チップ上面の角部の上方を経由し、前記発光チップの側面を縦方向に画定する辺に沿って設けられ、前記電極パッドと前記第1のリード電極とを接続する導電性ワイヤー、および
前記発光チップを封止し、蛍光体が透光性部材に分散されてなる蛍光体層
を具備することを特徴とする。
まず、LEDチップは、汎用のn型電極層と、SiC層と、窒化物半導体(AlxGayInzN、0≦x≦1、0≦y≦1、0≦z≦1、x+y+z=1)からなる発光層と、p型電極層とが積層して構成され青色領域の発光をなす。このLEDチップは、SiC基板を有し、上面が四角形である。また、チップのサイズは、底面300μm角である。LEDチップ上面の中央領域、具体的には上面200μm角の中心領域には、直径約100μmのAuSu製の電極パッドが設けられている。
蛍光体を(Y.Gd)3(Al.Gd)5O12:Ceに変更した以外は、実施例1と同様にして、発光装置を作製し、出力を調べた。その結果を図6のグラフに示す。図6に示されるように、上面の角部上方を通過する方向に導電性ワイヤーを配置した場合(c)には、光出力は側面を横切る場合(a)の1.4倍程度に増加する。
4…LEDチップ側面; 4a,4b…チップ側面を縦方向に画定する辺
5…上面電極パッド; 6,6a,6b…導電性ワイヤー
7,8,8a,8b…リード電極; 10…蛍光体層; 11…パッケージカップ。
Claims (5)
- 容器、
前記容器内に配置され、半導体基板を有する上面が多角形の発光チップ、
前記発光チップの上面に設けられた電極パッド、
前記容器の底面に設けられた第1のリード電極、
前記発光チップ上面の角部の上方を経由し、前記発光チップの側面を縦方向に画定する辺に沿って設けられ、前記電極パッドと前記第1のリード電極とを接続する導電性ワイヤー、および
前記発光チップを封止し、蛍光体が透光性部材に分散されてなる蛍光体層
を具備することを特徴とする発光装置。 - 前記蛍光体層は、80μm以上240μm以下の厚さで前記発光チップの上から前記容器の底にわたって存在することを特徴とする請求項1に記載の発光装置。
- 前記半導体基板と前記容器の底面との間に第2のリード電極を備えることを特徴とする請求項1または2に記載の発光装置。
- 前記蛍光体層における前記蛍光体は、YAG蛍光体であることを特徴とする請求項1ないし3のいずれか1項に記載の発光装置。
- 前記蛍光体層における前記蛍光体は、ケイ酸塩蛍光体であることを特徴とする請求項1ないし3のいずれか1項に記載の発光装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005207673A JP2007027431A (ja) | 2005-07-15 | 2005-07-15 | 発光装置 |
US11/355,886 US7663307B2 (en) | 2005-07-15 | 2006-02-17 | Light-emitting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005207673A JP2007027431A (ja) | 2005-07-15 | 2005-07-15 | 発光装置 |
Publications (1)
Publication Number | Publication Date |
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JP2007027431A true JP2007027431A (ja) | 2007-02-01 |
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ID=37661061
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Application Number | Title | Priority Date | Filing Date |
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JP2005207673A Pending JP2007027431A (ja) | 2005-07-15 | 2005-07-15 | 発光装置 |
Country Status (2)
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US (1) | US7663307B2 (ja) |
JP (1) | JP2007027431A (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20120016786A (ko) * | 2010-08-17 | 2012-02-27 | 서울반도체 주식회사 | 발광 장치 |
US10121948B2 (en) | 2015-12-22 | 2018-11-06 | Nichia Corporation | Light emitting device including different shapes of light emitting element having higher light extraction efficiency |
JP2019033263A (ja) * | 2018-08-30 | 2019-02-28 | 日亜化学工業株式会社 | パッケージ及びそれを用いた発光装置 |
US10608147B2 (en) | 2014-09-04 | 2020-03-31 | Nichia Corporation | Package and light-emitting device |
WO2023248760A1 (ja) * | 2022-06-23 | 2023-12-28 | スタンレー電気株式会社 | 半導体発光装置、および、半導体発光装置の製造方法 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006245020A (ja) * | 2005-02-28 | 2006-09-14 | Sharp Corp | 発光ダイオード素子とその製造方法 |
JP4557824B2 (ja) * | 2005-07-04 | 2010-10-06 | 株式会社東芝 | 発光装置およびその製造方法 |
JP2007273562A (ja) * | 2006-03-30 | 2007-10-18 | Toshiba Corp | 半導体発光装置 |
JP4282693B2 (ja) | 2006-07-04 | 2009-06-24 | 株式会社東芝 | 半導体発光素子及びその製造方法 |
JP2008078580A (ja) * | 2006-09-25 | 2008-04-03 | Toshiba Corp | 半導体装置の製造方法 |
CN101752483B (zh) * | 2008-12-15 | 2011-09-28 | 富士迈半导体精密工业(上海)有限公司 | 发光二极管 |
GB201418772D0 (en) * | 2014-10-22 | 2014-12-03 | Infiniled Ltd | Display |
GB201418810D0 (en) | 2014-10-22 | 2014-12-03 | Infiniled Ltd | Display |
JP6156402B2 (ja) * | 2015-02-13 | 2017-07-05 | 日亜化学工業株式会社 | 発光装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0799345A (ja) | 1993-09-28 | 1995-04-11 | Nichia Chem Ind Ltd | 発光ダイオード |
TW383508B (en) * | 1996-07-29 | 2000-03-01 | Nichia Kagaku Kogyo Kk | Light emitting device and display |
JP3421520B2 (ja) | 1996-11-19 | 2003-06-30 | 三洋電機株式会社 | 発光装置及びその製造方法 |
JPH10209496A (ja) | 1997-01-24 | 1998-08-07 | Rohm Co Ltd | 半導体発光素子 |
JP2000150966A (ja) | 1998-11-16 | 2000-05-30 | Matsushita Electronics Industry Corp | 半導体発光装置及びその製造方法 |
JP3882539B2 (ja) * | 2000-07-18 | 2007-02-21 | ソニー株式会社 | 半導体発光素子およびその製造方法、並びに画像表示装置 |
TWI292961B (en) * | 2002-09-05 | 2008-01-21 | Nichia Corp | Semiconductor device and an optical device using the semiconductor device |
TWI228323B (en) * | 2002-09-06 | 2005-02-21 | Sony Corp | Semiconductor light emitting device and its manufacturing method, integrated semiconductor light emitting device and manufacturing method thereof, image display device and its manufacturing method, illumination device and manufacturing method thereof |
JP4072632B2 (ja) | 2002-11-29 | 2008-04-09 | 豊田合成株式会社 | 発光装置及び発光方法 |
US6806658B2 (en) | 2003-03-07 | 2004-10-19 | Agilent Technologies, Inc. | Method for making an LED |
JP2005191530A (ja) * | 2003-12-03 | 2005-07-14 | Sumitomo Electric Ind Ltd | 発光装置 |
JP2005191420A (ja) | 2003-12-26 | 2005-07-14 | Stanley Electric Co Ltd | 波長変換層を有する半導体発光装置およびその製造方法 |
-
2005
- 2005-07-15 JP JP2005207673A patent/JP2007027431A/ja active Pending
-
2006
- 2006-02-17 US US11/355,886 patent/US7663307B2/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20120016786A (ko) * | 2010-08-17 | 2012-02-27 | 서울반도체 주식회사 | 발광 장치 |
KR101719641B1 (ko) * | 2010-08-17 | 2017-03-24 | 서울반도체 주식회사 | 발광 장치 |
US10608147B2 (en) | 2014-09-04 | 2020-03-31 | Nichia Corporation | Package and light-emitting device |
US10121948B2 (en) | 2015-12-22 | 2018-11-06 | Nichia Corporation | Light emitting device including different shapes of light emitting element having higher light extraction efficiency |
US10431725B2 (en) | 2015-12-22 | 2019-10-01 | Nichia Corporation | Light emitting device including different shapes of light emitting element having higher light extraction efficiency |
JP2019033263A (ja) * | 2018-08-30 | 2019-02-28 | 日亜化学工業株式会社 | パッケージ及びそれを用いた発光装置 |
WO2023248760A1 (ja) * | 2022-06-23 | 2023-12-28 | スタンレー電気株式会社 | 半導体発光装置、および、半導体発光装置の製造方法 |
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Publication number | Publication date |
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US20070013304A1 (en) | 2007-01-18 |
US7663307B2 (en) | 2010-02-16 |
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