JP6483613B2 - 紫外線発光装置 - Google Patents
紫外線発光装置 Download PDFInfo
- Publication number
- JP6483613B2 JP6483613B2 JP2015536597A JP2015536597A JP6483613B2 JP 6483613 B2 JP6483613 B2 JP 6483613B2 JP 2015536597 A JP2015536597 A JP 2015536597A JP 2015536597 A JP2015536597 A JP 2015536597A JP 6483613 B2 JP6483613 B2 JP 6483613B2
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- Japan
- Prior art keywords
- ultraviolet light
- light emitting
- emitting element
- type
- pad electrode
- Prior art date
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers 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 having potential barriers 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
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F32/00—Homopolymers and copolymers of cyclic compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system
- C08F32/02—Homopolymers and copolymers of cyclic compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings
- C08F32/04—Homopolymers and copolymers of cyclic compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having one carbon-to-carbon double bond
-
- H—ELECTRICITY
- 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
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
- H01L2224/14—Structure, shape, material or disposition of the bump connectors prior to the connecting process of a plurality of bump connectors
-
- H—ELECTRICITY
- 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
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
- H01L2224/161—Disposition
- H01L2224/16151—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/16221—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/16225—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
-
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- H01L2924/181—Encapsulation
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Description
前記封止樹脂の内の少なくとも前記紫外線発光素子のパッド電極と接触する特定部分が、第1タイプの非晶質フッ素樹脂であり、前記第1タイプの非晶質フッ素樹脂を構成する重合体または共重合体の末端官能基が、前記パッド電極を構成する金属に対して結合性を呈する反応性官能基であって、前記紫外線発光素子の発光スペクトル強度がピーク値の1%以上となる発光波長範囲の短波長端が、前記第1タイプの非晶質フッ素樹脂の吸収波長範囲の長波長端より長波長側にあることを第3の特徴とする紫外線発光装置が提供される。
CF2=CFOCF(CF3)CF=CF2、
CF2=CFOCF2CF2CF=CF2、
CF2=CFOCF2CF(CF3)CF=CF2、
CF2=CFOCF(CF3)CF2CF=CF2、
CF2=CFOCFClCF2CF=CF2、
CF2=CFOCCl2CF2CF=CF2、
CF2=CFOCF2OCF=CF2、
CF2=CFOC(CF3)2OCF=CF2、
CF2=CFOCF2CF(OCF3)CF=CF2、
CF2=CFCF2CF=CF2、
CF2=CFCF2CF2CF=CF2、
CF2=CFCF2OCF2CF=CF2。
上記実施形態では、本発明装置の好適な実施形態の一例を詳細に説明した。本発明装置の構成は、上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々の変形実施が可能である。以下に、本発明装置の別の態様につき説明する。
2: 紫外線発光素子
3: 封止樹脂
3a,3b: 樹脂膜
4: 集光レンズ
5: バンプ材料
6: 塗工液
10: 基材
11: 第1金属電極配線
12: 第2金属電極配線
12a: 第2金属電極配線の凸部
13: 側壁部
14,15: リード端子
16,17: パッド電極
18: 間隙
20: サファイア基板
21: AlN層
22: AlGaN層
23: n型クラッド層(n型AlGaN)
24: 活性層
25: 電子ブロック層(p型AlGaN)
26: p型クラッド層(p型AlGaN)
27: pコンタクト層(p型GaN)
28: p電極
29: n電極
30: 保護絶縁膜
A1: 第1領域
A2: 第2領域
Claims (9)
- 窒化物半導体からなる紫外線発光素子と前記紫外線発光素子を被覆する紫外線透過性の封止樹脂を備えてなる紫外線発光装置であって、
前記紫外線発光素子のパッド電極が、p電極側の第1パッド電極とn電極側の第2パッド電極を備えて構成され、
第1及び第2金属電極配線が基材の表面の一部に形成された基台を備え、
前記紫外線発光素子が前記基台上にフリップチップ実装により載置され、
前記紫外線発光素子の前記第1パッド電極と前記基台の前記第1金属電極配線が、前記紫外線発光素子の前記第2パッド電極と前記基台の前記第2金属電極配線が、夫々、互いに対向し、バンプ材料を介して電気的且つ物理的に接続しており、
前記封止樹脂の内の少なくとも前記紫外線発光素子の前記第1パッド電極と前記第2パッド電極の間に存在し、前記第1パッド電極と前記第2パッド電極の両方と接触する特定部分が、第1タイプの非晶質フッ素樹脂であり、
前記紫外線発光素子の前記第1及び第2パッド電極が形成されている側と前記基台の上面との間の空隙に、前記第1タイプの非晶質フッ素樹脂が充填されており、
前記第1タイプの非晶質フッ素樹脂を構成する重合体または共重合体の末端官能基が、前記パッド電極を構成する金属に対して結合性を呈する反応性官能基であるCOOH基またはCOOR基を備え、但し、前記COOR中のRはアルキル基であり、
前記紫外線発光素子の発光スペクトル強度がピーク値の1%以上となる発光波長範囲の短波長端の波長が、前記末端官能基が前記COOH基の場合、265nm以上であり、前記末端官能基が前記COOR基の場合、260nm以上であり、
前記封止樹脂の内の前記特定部分以外の部分が、前記第1タイプの非晶質フッ素樹脂とは異なる末端官能基を備えた第2タイプの非晶質フッ素樹脂であり、
前記第2タイプの非晶質フッ素樹脂を構成する重合体または共重合体の末端官能基が、前記パッド電極を構成する金属に対して結合性を呈しない非反応性官能基であることを特徴とする紫外線発光装置。 - 前記紫外線発光素子の発光中心波長が290nm以上365nm以下であることを特徴とする請求項1に記載の紫外線発光装置。
- 窒化物半導体からなる紫外線発光素子と前記紫外線発光素子を被覆する紫外線透過性の封止樹脂を備えてなる紫外線発光装置であって、
前記紫外線発光素子のパッド電極が、p電極側の第1パッド電極とn電極側の第2パッド電極を備えて構成され、
第1及び第2金属電極配線が基材の表面の一部に形成された基台を備え、
前記紫外線発光素子が前記基台上にフリップチップ実装により載置され、
前記紫外線発光素子の前記第1パッド電極と前記基台の前記第1金属電極配線が、前記紫外線発光素子の前記第2パッド電極と前記基台の前記第2金属電極配線が、夫々、互いに対向し、バンプ材料を介して電気的且つ物理的に接続しており、
前記封止樹脂の内の少なくとも前記紫外線発光素子の前記第1パッド電極と前記第2パッド電極の間に存在し、前記第1パッド電極と前記第2パッド電極の両方と接触する特定部分が、第1タイプの非晶質フッ素樹脂であり、
前記紫外線発光素子の前記第1及び第2パッド電極が形成されている側と前記基台の上面との間の空隙に、前記第1タイプの非晶質フッ素樹脂が充填されており、
前記第1タイプの非晶質フッ素樹脂を構成する重合体または共重合体の末端官能基が、前記パッド電極を構成する金属に対して結合性を呈する反応性官能基であるCOOH基またはCOOR基を備え、但し、前記COOR中のRはアルキル基であり、
前記紫外線発光素子の発光中心波長が290nm以上365nm以下であり、
前記封止樹脂の内の前記特定部分以外の部分が、前記第1タイプの非晶質フッ素樹脂とは異なる末端官能基を備えた第2タイプの非晶質フッ素樹脂であり、
前記第2タイプの非晶質フッ素樹脂を構成する重合体または共重合体の末端官能基が、前記パッド電極を構成する金属に対して結合性を呈しない非反応性官能基であることを特徴とする紫外線発光装置。 - 前記紫外線発光素子の発光中心波長が300nm以上365nm以下であることを特徴とする請求項2または3に記載の紫外線発光装置。
- 窒化物半導体からなる紫外線発光素子と前記紫外線発光素子を被覆する紫外線透過性の封止樹脂を備えてなる紫外線発光装置であって、
前記紫外線発光素子のパッド電極が、p電極側の第1パッド電極とn電極側の第2パッド電極を備えて構成され、
第1及び第2金属電極配線が基材の表面の一部に形成された基台を備え、
前記紫外線発光素子が前記基台上にフリップチップ実装により載置され、
前記紫外線発光素子の前記第1パッド電極と前記基台の前記第1金属電極配線が、前記紫外線発光素子の前記第2パッド電極と前記基台の前記第2金属電極配線が、夫々、互いに対向し、バンプ材料を介して電気的且つ物理的に接続しており、
前記封止樹脂の内の少なくとも前記紫外線発光素子の前記第1パッド電極と前記第2パッド電極の間に存在し、前記第1パッド電極と前記第2パッド電極の両方と接触する特定部分が、第1タイプの非晶質フッ素樹脂であり、
前記紫外線発光素子の前記第1及び第2パッド電極が形成されている側と前記基台の上面との間の空隙に、前記第1タイプの非晶質フッ素樹脂が充填されており、
前記第1タイプの非晶質フッ素樹脂を構成する重合体または共重合体の末端官能基が、前記パッド電極を構成する金属に対して結合性を呈する反応性官能基であって、
前記紫外線発光素子の発光スペクトル強度がピーク値の1%以上となる発光波長範囲の短波長端が、前記第1タイプの非晶質フッ素樹脂の吸収波長範囲の長波長端より長波長側にあり、
前記封止樹脂の内の前記特定部分以外の部分が、前記第1タイプの非晶質フッ素樹脂とは異なる末端官能基を備えた第2タイプの非晶質フッ素樹脂であり、
前記第2タイプの非晶質フッ素樹脂を構成する重合体または共重合体の末端官能基が、前記パッド電極を構成する金属に対して結合性を呈しない非反応性官能基であることを特徴とする紫外線発光装置。 - 前記重合体または前記共重合体を構成する構造単位が、含フッ素脂肪族環構造を有することを特徴とする請求項1〜5の何れか1項に記載の紫外線発光装置。
- 前記封止樹脂の内の前記第1及び第2金属電極配線と接触する部分が、前記第1タイプの非晶質フッ素樹脂であることを特徴とする請求項1〜6の何れか1項に記載の紫外線発光装置。
- 前記非反応性官能基がパーフルオロアルキル基であることを特徴とする請求項1〜7の何れか1項に記載の紫外線発光装置。
- 前記非反応性官能基がCF3であることを特徴とする請求項8に記載の紫外線発光装置。
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