JP5960014B2 - 蛍光接着シート、光半導体素子−蛍光体層感圧接着体および光半導体装置 - Google Patents
蛍光接着シート、光半導体素子−蛍光体層感圧接着体および光半導体装置 Download PDFInfo
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- JP5960014B2 JP5960014B2 JP2012216864A JP2012216864A JP5960014B2 JP 5960014 B2 JP5960014 B2 JP 5960014B2 JP 2012216864 A JP2012216864 A JP 2012216864A JP 2012216864 A JP2012216864 A JP 2012216864A JP 5960014 B2 JP5960014 B2 JP 5960014B2
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
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- 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
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Description
75℃雰囲気における剥離強度PS75℃:支持体に積層された前記接着剤層を前記蛍光体層に感圧接着し、その後、温度75℃において、前記支持体および接着剤層を、剥離角度180度、速度300mm/分で前記蛍光体層から剥離したときの剥離強度。
一般式(1):
上記一般式(1)中、R1で示される1価の炭化水素基において、飽和炭化水素基としては、例えば、炭素数1〜6の直鎖状または分岐状のアルキル基(メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、ペンチル基、ヘキシル基など)、例えば、炭素数3〜6のシクロアルキル基(シクロペンチル基、シクロヘキシル基など)などが挙げられる。
一般式(2):
mは、好ましくは、3以上の整数を示し、また、例えば、10以下の整数、好ましくは、6以下の整数でもある。
75℃雰囲気における剥離強度PS75℃:支持体に積層された接着剤層4を蛍光体層3に感圧接着し、その後、温度75℃において、支持体および接着剤層4を、剥離角度180度、速度300mm/分で蛍光体層3から剥離したときの剥離強度。つまり、75℃雰囲気における接着剤層4の蛍光体層3に対する剥離強度。
作製例1
酸化イットリウム粒子(純度99.99%、lot:N−YT4CP、日本イットリウム社製)11.34g、酸化アルミニウム粒子(純度99.99%、品番「AKP−30」、住友化学社製)8.577g、および、酸化セリウム粒子0.087gからなる蛍光体の原料粉末を調製した。
作製例2
YAG蛍光体粉末(品番BYW01A、平均粒子径9μm、Phosphor Tech社製)を2液混合タイプの熱硬化性シリコーンエラストマー(信越シリコーン社製、品番KER2500)に、YAG蛍光体粉末の濃度が25質量%となるように、分散させた溶液を、アプリケーターを用いてガラス板上に塗工して、厚み150μmの蛍光体皮膜を形成し、蛍光体皮膜を100℃で1時間、続いて、150℃で1時間加熱することにより、厚み150μmのCステージの蛍光体樹脂シート(蛍光体シート)を作製した。
準備例1
シリコーン感圧接着剤組成物(商品名、PSA 600、モメンティブ社製)を準備した。
・シラノール基両末端ポリジメチルシロキサン
・オクタメチルシクロテトラシロキサン(式(2)中、R1:すべてメチル、m:3) 1〜5質量%(固形分総量に対して)
・ベンゾイル系過酸化物の混合物(ジベンゾイルパーオキシド、ベンゾイルm−メチルベンゾイルパーオキシドおよびm−トルイルパーオキシドの混合物) 少量
・トルエン 固形分に対して45質量%
(シリコーン感圧接着剤組成物の準備)
比較準備例1
シリコーン感圧接着剤組成物(商品名、SD 4580 PSA、東レ・ダウコーニング社製)を準備した。
・シラノール基両末端ポリジメチルシロキサン
・ベンゾイル系過酸化物の混合物(ジベンゾイルパーオキシド、ベンゾイルm−メチルベンゾイルパーオキシドおよびm−トルイルパーオキシドの混合物) 少量
・トルエン 固形分に対して70質量%
(アクリル感圧接着剤組成物の準備)
比較準備例2
特開平6−172729号公報の実施例2の処方を参考にして、アクリル感圧接着剤を準備した。
実施例1
作製例1の蛍光体セラミックプレートの上面全面に準備例1のシリコーン感圧接着剤組成物を塗布して、皮膜を形成した。続いて、溶媒を留去した。
作製例1の蛍光体セラミックプレートに代えて、作製例2の蛍光体樹脂シートを用いた以外は、実施例1と同様に処理して、蛍光接着シートを得(図1参照)、続いて、LED装置を製造した(図2(b)参照)。
シリコーン感圧接着剤層の厚みを60μmに変更した以外は、実施例1と同様に処理して、蛍光接着シートを得(図1参照)、続いて、LED装置を製造した(図2(b)参照)。
シリコーン感圧接着剤層の厚みを120μmに変更した以外は、実施例1と同様に処理して、蛍光接着シートを得(図1参照)、続いて、LED装置を製造した(図2(b)参照)。
準備例1のシリコーン感圧接着剤組成物に代えて、比較準備例1のシリコーン感圧接着剤組成物を用いた以外は、実施例1と同様に処理して、蛍光接着シートを得(図1参照)、続いて、LED装置を製造した(図2(b)参照)。
準備例1のシリコーン感圧接着剤組成物に代えて、比較準備例2のアクリル感圧接着剤組成物を用いた以外は、実施例1と同様に処理して、蛍光接着シートを得(図1参照)、続いて、LED装置を製造した(図2(b)参照)。
準備例1のシリコーン感圧接着剤組成物に代えて、比較準備例2のアクリル感圧接着剤組成物を用いた以外は、実施例2と同様に処理して、蛍光接着シートを得(図1参照)、続いて、LED装置を製造した(図2(b)参照)。
実施例および比較例のそれぞれの感圧接着剤層について、蛍光体シートに対する剥離強度を以下の方法によって評価した。
1.剥離強度
25℃と75℃とのそれぞれの雰囲気における感圧接着剤層の蛍光体セラミックプレートに対する剥離強度を、19mm幅での引き剥がし接着力測定[N/19mm]によって算出した。
剥離(引き剥がし)条件:剥離角度180度
引張速度300mm/分
測定後、75℃雰囲気における剥離強度PS75℃[N/19mm]の、25℃雰囲気における剥離強度PS25℃[N/19mm]に対する百分率([PS75℃/PS25℃]×100)を算出した。
2.LED装置を点灯した際の蛍光体層の表面温度
実施例および比較例のそれぞれのLED装置を、十分なサイズのヒートシンクと熱伝導グリースにて接続させ、また、電源と電気的に接続した。次いで、電源から350mAの電流を印加してLED装置を発光させ、1分間発光させた後の蛍光体層の表面温度をサーモグラフィーで測定した。
3.経時での発光信頼性
上記2.で作製したLED装置を、350mAで初期発光させた際の発光輝度(初期輝度)と、30日間連続して発光させたときの輝度(30日後輝度)とをそれぞれ測定した。
2 LED(LD)
3 蛍光体層(蛍光体シート)
4 接着剤層
5 基板
6 蛍光接着シート
7 LED装置(LD照射装置)
10 LEDパッケージ(LDパッケージ)
11 リフレクタ
12 第2封止層
Claims (7)
- 蛍光体を含有する蛍光体層と、
前記蛍光体層の厚み方向一方面に積層される接着剤層とを備え、
前記接着剤層は、シリコーン感圧接着剤組成物から形成され、
下記剥離強度の百分率が、30%以上であることを特徴とする、蛍光接着シート。
剥離強度の百分率=[(75℃雰囲気における剥離強度PS75℃)/(25℃雰囲気における剥離強度PS25℃)]×100
75℃雰囲気における剥離強度PS75℃:支持体に積層された前記接着剤層を前記蛍光体層に感圧接着し、その後、温度75℃において、前記支持体および接着剤層を、剥離角度180度、速度300mm/分で前記蛍光体層から剥離したときの剥離強度。
25℃雰囲気における剥離強度PS25℃:支持体に積層された前記接着剤層を前記蛍光体層に感圧接着し、その後、温度75℃において、前記支持体および接着剤層を、剥離角度180度、速度300mm/分で前記蛍光体層から剥離したときの剥離強度。 - 前記剥離強度の百分率が、200%以下であることを特徴とする、請求項1に記載の蛍光接着シート。
- 前記蛍光体層が、前記蛍光体のセラミックから形成されていることを特徴とする、請求項1または2に記載の蛍光接着シート。
- 前記蛍光体層が、前記蛍光体および樹脂を含有する蛍光体樹脂組成物から形成されていることを特徴とする、請求項1または2に記載の蛍光接着シート。
- 光半導体素子と、
前記光半導体素子の厚み方向一方面に感圧接着する請求項1〜4のいずれか一項に記載の蛍光接着シートと
を備えることを特徴とする、光半導体素子−蛍光体層感圧接着体。 - 基板と、
前記基板に実装される光半導体素子と、
前記光半導体素子の厚み方向一方面に感圧接着する請求項1〜4のいずれか一項に記載の蛍光接着シートと
を備えることを特徴とする、光半導体装置。 - 基板と、前記基板に実装される光半導体素子と、前記基板の厚み方向一方側に形成され、前記厚み方向に投影したときに、前記光半導体素子を囲むように配置されるリフレクタと、前記リフレクタ内に充填され、前記光半導体素子を封止する封止層とを備える光半導体パッケージと、
前記光半導体パッケージの前記厚み方向一方面に感圧接着する請求項1〜4のいずれか一項に記載の蛍光接着シートと
を備えることを特徴とする、光半導体装置。
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JP2012216864A JP5960014B2 (ja) | 2012-09-28 | 2012-09-28 | 蛍光接着シート、光半導体素子−蛍光体層感圧接着体および光半導体装置 |
US14/030,013 US20140091346A1 (en) | 2012-09-28 | 2013-09-18 | Phosphor adhesive sheet, optical semiconductor element-phosphor layer pressure-sensitive adhesive body, and optical semiconductor device |
EP13185714.6A EP2712908A3 (en) | 2012-09-28 | 2013-09-24 | Phosphor adhesive sheet, optical semiconductor element-phosphor layer pressure-sensitive adhesive body, and optical semiconductor device |
TW102134355A TWI602897B (zh) | 2012-09-28 | 2013-09-24 | 螢光接著片材、光半導體元件-螢光體層壓感接著體及光半導體裝置 |
KR1020130115088A KR20140042728A (ko) | 2012-09-28 | 2013-09-27 | 형광 접착 시트, 광반도체 소자-형광체층 감압 접착체 및 광반도체 장치 |
CN201310451606.2A CN103715335A (zh) | 2012-09-28 | 2013-09-27 | 荧光粘接片、光半导体元件-荧光体层压敏粘接体和光半导体装置 |
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-
2012
- 2012-09-28 JP JP2012216864A patent/JP5960014B2/ja not_active Expired - Fee Related
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2013
- 2013-09-18 US US14/030,013 patent/US20140091346A1/en not_active Abandoned
- 2013-09-24 TW TW102134355A patent/TWI602897B/zh not_active IP Right Cessation
- 2013-09-24 EP EP13185714.6A patent/EP2712908A3/en not_active Withdrawn
- 2013-09-27 CN CN201310451606.2A patent/CN103715335A/zh active Pending
- 2013-09-27 KR KR1020130115088A patent/KR20140042728A/ko not_active Application Discontinuation
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Publication number | Publication date |
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JP2014070136A (ja) | 2014-04-21 |
TWI602897B (zh) | 2017-10-21 |
EP2712908A3 (en) | 2015-04-08 |
TW201412928A (zh) | 2014-04-01 |
EP2712908A2 (en) | 2014-04-02 |
US20140091346A1 (en) | 2014-04-03 |
CN103715335A (zh) | 2014-04-09 |
KR20140042728A (ko) | 2014-04-07 |
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