JP2013091809A - 熱硬化性光反射用樹脂組成物、並びにその樹脂組成物を用いた光半導体素子搭載用基板及び光半導体装置 - Google Patents
熱硬化性光反射用樹脂組成物、並びにその樹脂組成物を用いた光半導体素子搭載用基板及び光半導体装置 Download PDFInfo
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- JP2013091809A JP2013091809A JP2013010094A JP2013010094A JP2013091809A JP 2013091809 A JP2013091809 A JP 2013091809A JP 2013010094 A JP2013010094 A JP 2013010094A JP 2013010094 A JP2013010094 A JP 2013010094A JP 2013091809 A JP2013091809 A JP 2013091809A
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Abstract
【解決手段】熱硬化性成分と、白色顔料と、添加剤とを含有する熱硬化性光反射用樹脂組成物であって、成形温度180℃、成形圧力6.9MPa、硬化時間90秒の条件下でトランスファー成形した時に生じるバリ長さが5mm以下であり、かつ熱硬化後の上記樹脂組成物の波長350nm〜800nmにおける光反射率が80%以上であることを特徴とする熱硬化性光反射用樹脂組成物を調製する。
【選択図】 図1
Description
(1)熱硬化性成分と、白色顔料と、添加剤とを含有する熱硬化性光反射用樹脂組成物であって、成形温度180℃、成形圧力6.9MPa、硬化時間90秒の条件下でトランスファー成形した時に生じるバリ長さが5mm以下であり、かつ熱硬化後の上記樹脂組成物の波長350nm〜800nmにおける光反射率が80%以上であることを特徴とする熱硬化性光反射用樹脂組成物。
(実施例1〜12、比較例1〜4)
1.熱硬化性光反射用樹脂組成物の調製
下記表1及び表2に示した配合割合に従って各成分を配合し、ミキサーによって十分に混練した後にミキシングロールによって所定条件下で溶融混練して混練物を得た。さらに、得られた混練物を粉砕することによって、実施例1〜12及び比較例1〜4の熱硬化性光反射用樹脂組成物を各々調製した。なお、表1及び2に示した各成分の配合量の単位は重量部である。表における空欄は該当する成分の配合が無いことを意味する。
先に調製した実施例1〜12及び比較例1〜4の各々の樹脂組成物について、以下の手順に従って、光反射率及びバリ長さを測定した。また、各々の樹脂組成物を成形して得られる基板のワイヤボンディング性について検討し、評価した。それらの結果を下記表1及び表2に示す。
先に調製した各々の熱硬化性光反射用樹脂組成物を、成形金型温度180℃、成形圧力6.9MPa、硬化時間90秒の条件下でトランスファー成形した後、150℃で2時間にわたって後硬化することによって、厚み1.0mmの試験片をそれぞれ作製した。次いで、積分球型分光光度計V−750型(日本分光株式会社製)を用いて、波長400nmにおける各試験片の光反射率を測定した。
先に調製した各々の熱硬化性光反射用樹脂組成物を、ポットを用いて、バリ測定用金型(図4を参照)に流し込み、次いで硬化させることによって樹脂組成物を成形した。なお、成形時の金型温度は180℃、成形圧力は6.9MPa、樹脂の流し込み時間(トランスファー時間)は10秒であり、硬化温度は180℃、硬化時間は90秒とした。成形後、バリ測定用金型の上型を外し、成形時に金型の上型と下型との隙間を流れて生じたバリの長さの最大値を、ノギスを使用して測定した。
最初に、成形金型温度180℃、成形圧力6.9MPa、硬化時間90秒の条件下でトランスファー成形した後、150℃で2時間にわたって後硬化することによって、光半導体素子搭載用基板をそれぞれ作製した。
次に、作製した上記基板の光半導体素子搭載領域となる凹部に光半導体素子を搭載した後、ワイヤボンダ(HW22U−H、九州松下電器株式会社製、商品名)及び直径28μmのボンディングワイヤを使用して、光半導体素子と基板とをワイヤボンディングすることによって、電気的に接続した。ワイヤボンディング時の基板の加熱温度は180℃とした。ワイヤボンディング性は、光半導体素子と基板とを電気的に接続するワイヤボンディングのワイヤ引っ張り強度を、プルテスターPTR−01(株式会社レスカ製、商品名)を使用して測定し、その値について下記の評価基準に従って評価した。
◎:引っ張り強度10g以上
○:引っ張り強度4g以上10g未満
△:引っ張り強度4g未満
×:ボンディング不可
*2:ヘキサヒドロ無水フタル酸(和光純薬社製)
*3:メチルヘキサヒドロ無水フタル酸(日立化成工業社製、商品名HN5500)
*4:日本化学工業社製、商品名PX−4ET
*5:トリメトキシエポキシシラン(東レダウコーニング社製、商品名A−187)
*7:脂肪族エーテル(東洋ペトロライト社製、商品名 ユニトックス420)
*8:溶融シリカ(電気化学工業社製、商品名FB−301)
*9:中空粒子(住友3M社製、商品名S60−HS)
*10:アルミナ(アドマテックス社製、商品名AO−25R)
*12:添加剤(日油株式会社製、商品名マープルーフG−017581、重量平均分子量10,000、エポキシ当量240、メタクリル酸グリシジルとメタクリル酸メチルとの共重合体)
*13:添加剤(日油株式会社製、商品名マープルーフG−01100、重量平均分子量12,000、エポキシ当量170、メタクリル酸グリシジルの単独重合体)
101 透明封止樹脂
102 ボンディングワイヤ
103 熱硬化性反射用樹脂(リフレクター)
104 Ni/Agめっき
105 金属配線
106 蛍光体
107 はんだバンプ
110 光半導体素子搭載用基板
200 光半導体素子搭載領域
300 LED素子
301 ワイヤボンド
302 透明封止樹脂
303 リフレクター
304 リード
305 蛍光体
306 ダイボンド材
400 バリ測定用金型(上型)
401 バリ測定用金型(下型)
402 樹脂注入口
403 キャビティ
404 スリット(75μm)
405 スリット(50μm)
406 スリット(30μm)
407 スリット(20μm)
408 スリット(10μm)
409 スリット(2μm)
410 樹脂バリ
Claims (15)
- 熱硬化性成分と、白色顔料と、添加剤とを含有する熱硬化性光反射用樹脂組成物であって、成形温度180℃、成形圧力6.9MPa、硬化時間90秒の条件下でトランスファー成形した時に生じるバリ長さが5mm以下であり、かつ熱硬化後の前記樹脂組成物の波長350nm〜800nmにおける光反射率が80%以上であることを特徴とする熱硬化性光反射用樹脂組成物。
- 前記添加剤が、前記熱硬化性成分と反応可能な反応性基を有する(メタ)アクリル酸誘導体の重合体又は共重合体を含むことを特徴とする請求項1に記載の熱硬化性光反射用樹脂組成物。
- 前記添加剤が、(メタ)アクリル酸グリシジルと、他のエチレン性不飽和化合物との共重合体を含むことを特徴とする請求項2に記載の熱硬化性光反射用樹脂組成物。
- 前記添加剤が、(メタ)アクリル酸グリシジルと、(メタ)アクリル酸メチルとの共重合体を含むことを特徴とする請求項3に記載の熱硬化性光反射用樹脂組成物。
- 前記添加剤の重量平均分子量が、1,000〜100,000であることを特徴とする請求項1〜4のいずれかに記載の熱硬化性光反射用樹脂組成物。
- 前記熱硬化性成分が、エポキシ樹脂と、該エポキシ樹脂と硬化可能な硬化剤とを含むことを特徴とする請求項1〜5のいずれかに記載の熱硬化性光反射用樹脂組成物。
- 前記エポキシ樹脂が1分子中に2個以上のエポキシ基を有するエポキシ樹脂であり、前記硬化剤が1分子中に1個以上の酸無水物基を有する化合物であることを特徴とする請求項6に記載の熱硬化性光反射用樹脂組成物。
- 前記添加剤の添加量が、前記エポキシ樹脂100重量部に対し、5〜30重量部の範囲であることを特徴とする請求項6または7に記載の熱硬化性光反射用樹脂組成物。
- 前記白色顔料が、アルミナ、酸化マグネシウム、酸化アンチモン、酸化チタン、酸化ジルコニウム、及び無機中空粒子からなる群の中から選ばれる少なくとも1種であることを特徴とする請求項1〜8のいずれかに記載の熱硬化性光反射用樹脂組成物。
- 前記白色顔料の中心粒径が0.1〜50μmの範囲内であることを特徴とする請求項1〜9のいずれかに記載の熱硬化性光反射用樹脂組成物。
- 前記樹脂組成物が、さらに無機充填剤を含むことを特徴とする請求項1〜10のいずれかに記載の熱硬化性光反射用樹脂組成物。
- 前記無機充填剤と前記白色顔料との合計配合量が、前記樹脂組成物全体に対して、10体積%〜85体積%の範囲であることを特徴とする請求項11に記載の熱硬化性光反射用樹脂組成物。
- 請求項1〜12のいずれかに記載の熱硬化性光反射用樹脂組成物を用いてなることを特徴とする光半導体素子搭載用基板。
- 光半導体素子搭載領域となる凹部が1つ以上形成されてなる光半導体素子搭載用基板であって、少なくとも前記凹部の内周側面が請求項1〜12のいずれかに記載の光反射用熱硬化性樹脂組成物から構成されることを特徴とする光半導体素子搭載用基板。
- 請求項14に記載の光半導体素子搭載用基板と、
前記光半導体素子搭載用基板の凹部底面に搭載された光半導体素子と、
前記光半導体素子を覆うように前記凹部内に形成された蛍光体含有透明封止樹脂層とを少なくとも備えることを特徴とする光半導体装置。
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WO2014199728A1 (ja) * | 2013-06-13 | 2014-12-18 | 日東電工株式会社 | 光半導体リフレクタ用エポキシ樹脂組成物、光半導体装置用熱硬化性樹脂組成物およびそれを用いて得られる光半導体装置用リードフレーム、封止型光半導体素子ならびに光半導体装置 |
KR20160100943A (ko) | 2013-12-18 | 2016-08-24 | 닛뽄 가야쿠 가부시키가이샤 | 열경화성 수지 조성물, 이것을 사용한 광반도체 장치용 반사부재의 제조 방법, 및 광반도체 장치 |
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JP5421546B2 (ja) * | 2007-07-05 | 2014-02-19 | 日立化成株式会社 | 熱硬化性光反射用樹脂組成物、並びにその樹脂組成物を用いた光半導体素子搭載用基板及び光半導体装置 |
JP6133004B2 (ja) * | 2009-03-31 | 2017-05-24 | 日立化成株式会社 | 光反射用熱硬化性樹脂組成物、光半導体素子搭載用基板及びその製造方法、並びに光半導体装置 |
JP5844252B2 (ja) | 2010-04-02 | 2016-01-13 | 株式会社カネカ | 硬化性樹脂組成物、硬化性樹脂組成物タブレット、成形体、半導体のパッケージ、半導体部品及び発光ダイオード |
JP2012084810A (ja) * | 2010-10-14 | 2012-04-26 | Toppan Printing Co Ltd | Led素子用リードフレーム基板及び発光素子 |
JP5831424B2 (ja) * | 2012-10-17 | 2015-12-09 | 日立化成株式会社 | 光反射用熱硬化性樹脂組成物、光半導体素子搭載用基板及びその製造方法、並びに光半導体装置 |
JP5670534B1 (ja) * | 2013-10-16 | 2015-02-18 | 台湾太陽油▲墨▼股▲分▼有限公司 | 白色熱硬化性樹脂組成物、その硬化物、及びそれを用いたディスプレイ用部材 |
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JP5825650B2 (ja) * | 2013-06-13 | 2015-12-02 | 日東電工株式会社 | 光半導体リフレクタ用エポキシ樹脂組成物、光半導体装置用熱硬化性樹脂組成物およびそれを用いて得られる光半導体装置用リードフレーム、封止型光半導体素子ならびに光半導体装置 |
KR20160100943A (ko) | 2013-12-18 | 2016-08-24 | 닛뽄 가야쿠 가부시키가이샤 | 열경화성 수지 조성물, 이것을 사용한 광반도체 장치용 반사부재의 제조 방법, 및 광반도체 장치 |
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