JP7357195B2 - 補強用樹脂組成物、電子部品、電子部品の製造方法、実装構造体及び実装構造体の製造方法 - Google Patents
補強用樹脂組成物、電子部品、電子部品の製造方法、実装構造体及び実装構造体の製造方法 Download PDFInfo
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- JP7357195B2 JP7357195B2 JP2018226757A JP2018226757A JP7357195B2 JP 7357195 B2 JP7357195 B2 JP 7357195B2 JP 2018226757 A JP2018226757 A JP 2018226757A JP 2018226757 A JP2018226757 A JP 2018226757A JP 7357195 B2 JP7357195 B2 JP 7357195B2
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- H01L2224/81815—Reflow soldering
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- 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
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/81—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a bump connector
- H01L2224/818—Bonding techniques
- H01L2224/8185—Bonding techniques using a polymer adhesive, e.g. an adhesive based on silicone, epoxy, polyimide, polyester
- H01L2224/81855—Hardening the adhesive by curing, i.e. thermosetting
- H01L2224/81862—Heat curing
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- 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
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/81—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a bump connector
- H01L2224/81905—Combinations of bonding methods provided for in at least two different groups from H01L2224/818 - H01L2224/81904
- H01L2224/81906—Specific sequence of method steps
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- 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
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/81—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a bump connector
- H01L2224/81909—Post-treatment of the bump connector or bonding area
- H01L2224/81951—Forming additional members, e.g. for reinforcing
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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
- H01L2924/06—Polymers
- H01L2924/066—Phenolic resin
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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
- H01L2924/06—Polymers
- H01L2924/0665—Epoxy resin
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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
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
- H01L2924/1815—Shape
- H01L2924/1816—Exposing the passive side of the semiconductor or solid-state body
- H01L2924/18161—Exposing the passive side of the semiconductor or solid-state body of a flip chip
Description
本開示の一実施形態に係る補強用樹脂組成物(以下、樹脂組成物(X)ともいう)は、エポキシ樹脂(A)、フェノール樹脂(B)及びベンゾオキサジン化合物(C)を含む。
以下、本実施形態の樹脂組成物(X)、電子部品100(図2参照)、電子部品100の製造方法(図3A~図3C参照)、実装構造体1(図4A~図4C参照)、及び実装構造体1の製造方法(図5A~図5C参照)を、詳細に説明する。
本実施形態の樹脂組成物(X)は、上述の通り、エポキシ樹脂(A)と、フェノール樹脂(B)と、ベンゾオキサジン化合物(C)とを含む。さらに樹脂組成物(X)は、活性剤(D)を含むことが好ましい。以下、エポキシ樹脂(A)、フェノール樹脂(B)、ベンゾオキサジン化合物(C)及び活性剤(D)の詳細を説明する。
エポキシ樹脂(A)は、エポキシ基を有する化合物であり、加熱によって硬化する性質を有する。このためエポキシ樹脂(A)は、樹脂組成物(X)に熱硬化性を付与することができる。
フェノール樹脂(B)は、フェノール性水酸基を有する化合物である。このフェノール性水酸基は、エポキシ樹脂(A)のエポキシ基と反応することができる。
ベンゾオキサジン化合物(C)は、ジヒドロベンゾオキサジン環を含有する化合物である。ベンゾオキサジン化合物(C)は、原材料の種類によって、種々の構造を有する。ベンゾオキサジン化合物(C)は、例えば、各種のフェノール、アミンおよびホルムアルデヒド等から合成することができる。
樹脂組成物(X)は、上述の通り、活性剤(D)を含むことが好ましい。活性剤(D)は、金属酸化膜を除去する機能を有するため、樹脂組成物(X)が活性剤(D)を含むことにより、樹脂組成物(X)にフラックス作用を付与することができる。なお、フラックス作用とは、はんだペーストが塗布される金属表面に生じた酸化皮膜を除去するという還元作用、及び、溶融はんだの表面張力を低下させて、はんだの接合金属表面への濡れ性を促進する作用を意味する。
樹脂組成物(X)は、エポキシ樹脂(A)、フェノール樹脂(B)、ベンゾオキサジン化合物(C)及び活性剤(D)以外の成分(E)を含んでいてもよい。成分(E)は、例えばロジン等の成分改質剤、フィラー、チクソ性付与剤等を含むことができる。
樹脂組成物(X)において、エポキシ樹脂(A)、フェノール樹脂(B)、ベンゾオキサジン化合物(C)及び活性剤(D)の合計に対する、エポキシ樹脂(A)の割合は、20重量%以上60重量%以下であることが好ましい。
以下、樹脂組成物(X)を用いて、導体とはんだ製のバンプとの継目を補強する補強部を作製する方法について説明する。
以下、樹脂組成物(X)を適用した電子部品100の構成と、その製造方法とを説明する。
本実施形態の電子部品100について、図2を参照しながら説明する。なお、以下に示す電子部品100の構成はあくまで一例であり、電子部品100の構成は、以下の内容に限定されない。
以下、電子部品100の製造方法を、図3A~図3Cを参照しながら説明する。
(1)実装構造体
本実施形態の実装構造体1について、図4A~図4Cを参照しながら説明する。なお、以下に示す実装構造体1の構成はあくまで一例であり、実装構造体1の構成は、以下の内容に限定されない。
以下、図4Aに示す実装構造体1の製造方法を、図5A~図5Cを参照しながら説明する。
表1に示す成分を、表1に示す割合で混合することにより、樹脂組成物を得た。なお、表1に示す成分の詳細は次のとおりである。
・EPICLON835LV:25℃で液状のビスフェノールF型エポキシ樹脂、エポキシ当量160~170、25℃での粘度2000~2500mPa・s、DIC株式会社製、品名EPICLON835LV。
・MEH8000H:25℃で液状のフェノール樹脂、25℃の粘度1500~3500mPa・s、明和化成株式会社製、品番MEH-8000H。
・P-d:p-d型ベンゾオキサジン化合物、四国化成株式会社製。
・2P4MHZ:2-フェニル-4-ヒドロキシメチル-5-メチルイミダゾール、品番2P4MHZ-PW、四国化成工業株式会社製。
・アジピン酸:アジピン酸、融点152~155℃、東京化成工業株式会社製。
・コハク酸:コハク酸、融点185~189℃、東京化成工業株式会社製。
・TEA:トリエタノールアミン、融点199℃、東京化成工業株式会社製。
・グアニジン:グアニジン塩酸塩、融点185~189℃、東京化成工業株式会社製。
(1)硬化性
実施例1~10及び比較例1~6の樹脂組成物の240℃におけるゲルタイムを測定した。ゲルタイムの測定には、TAインスツルメンツ社製のレオメーター(DISCOVERY HR-2)を使用した。なお、ゲルタイムとは、樹脂組成物(X)の貯蔵弾性率と、損失弾性率とが一致するまでの時間である。そして、樹脂組成物のゲルタイムを以下の基準で評価した。その結果を、下記の表1及び表2に示す。
・A:120秒以上600秒未満(硬化性が特に良好)
・B:60秒以上120秒未満(硬化性が良好)
・C:60秒未満又は600秒以上(硬化性を有する)
実施例1~10及び比較例1~6の樹脂組成物を用いて、銅製の板の上に厚み0.1mmの膜を形成した。融点222℃のSAC305はんだを、直径0.35mmの球状に成形し、このSAC305はんだを膜の上に載せた。続いて、板を膜及びSAC305はんだごと、240℃で3分間加熱してから、室温まで冷却した。続いて、SAC305はんだの、平面視の直径(D)及び高さ寸法(H)を確認し、その結果に基づいて、{(D-H)/D}×100(%)の式で算出される値を求めた。この値を濡れ性の指標とした。この値を以下の基準で評価した。その結果を、下記の表1及び表2に示す。
・A:55%以上(はんだへの濡れ性が特に良好)。
・B:40%以上55%未満(はんだへの濡れ性が良好)。
・C:40%未満(はんだへの濡れ性を有する)。
実施例1~10及び比較例1~6の樹脂組成物から硬化物を作製した。具体的には、銅製の板(2.5cm×2.5cm)の上に0.5mm厚のコの字型のシリコンゴムを貼り付けて樹脂組成物を流し込み、スライドガラス(2.5cm×2.5cm厚み1mm)を上からかぶせ、樹脂組成物が漏れ出さないようクリップで固定した。続いて、樹脂組成物を、240℃の硬化炉の中で20分間加熱して硬化させることにより、厚さ0.5mm、大きさ2.0cm×2.0cmの硬化物を作製した。この硬化物が有するボイド(気泡)を観察し、以下の基準で評価した。その結果を、下記の表1及び表2に示す。
・A:ボイドの数が10個未満。
・B:ボイドの数が10個以上30個未満。
・C:ボイドの数が30個以上。
上記硬化性、濡れ性、及びボイドの評価結果を、以下の基準で評価した。その結果を下記の表1及び表2に示す。
・A:硬化性、濡れ性、及びボイドの評価において、全てA評価。
・B:硬化性、濡れ性、及びボイドの評価において、B評価が一つ以上、C評価がない。
・C:硬化性、濡れ性、及びボイドの評価において、C評価が一つ以上。
2 回路基板
3 電子部品
20 継目
21 第1導体
30、32 バンプ
31 第2導体
100 電子部品
200 電子部品本体
210 導体
Claims (9)
- エポキシ樹脂(A)、
フェノール樹脂(B)、
ベンゾオキサジン化合物(C)及び
活性剤(D)を含み、
前記エポキシ樹脂(A)、前記フェノール樹脂(B)、前記ベンゾオキサジン化合物(C)及び前記活性剤(D)の合計に対する、
前記エポキシ樹脂(A)の割合が20重量%以上60重量%以下であり、
前記フェノール樹脂(B)の割合が10重量%以上40重量%以下であり、
前記ベンゾオキサジン化合物(C)の割合が5重量%以上30重量%以下であり、
前記活性剤(D)の割合が10重量%以上40重量%以下である、
補強用樹脂組成物。 - 前記活性剤(D)は、融点が130℃以上220℃以下である有機酸(D1)を含む、
請求項1に記載の補強用樹脂組成物。 - 前記活性剤(D)は、融点が130℃以上220℃以下であるアミン(D2)を含む、
請求項1に記載の補強用樹脂組成物。 - 前記フェノール樹脂(B)は、水酸基当量が70g/eq以上150g/eq以下であるフェノールノボラック樹脂(B1)を含む、
請求項1~3のいずれか一項に記載の補強用樹脂組成物。 - 前記ベンゾオキサジン化合物(C)は、分子内に複数のオキサジン環を有する多価オキサ
ジン化合物(C1)を含む、
請求項1~4のいずれか一項に記載の補強用樹脂組成物。 - 電子部品本体と、
前記電子部品本体の表面上に形成された導体と、
前記導体上に配置され、前記導体と電気的に接続されている、はんだ製のバンプと、
請求項1~5のいずれか一項に記載の補強用樹脂組成物の硬化物であり、前記導体と前記バンプとの継目を覆う補強部と、を備える、
電子部品。 - 請求項6に記載の電子部品の製造方法であって、
前記導体と前記バンプとの継目を、請求項1~5のいずれか一項に記載の補強用樹脂組成物で覆ってから、前記補強用樹脂組成物を硬化させる、
電子部品の製造方法。 - 第1導体を備える回路基板と、
第2導体を備える電子部品と、
前記第1導体と前記第2導体との間に介在し、かつ、前記第1導体と前記第2導体とを電気的に接続する、はんだ製のバンプと、
請求項1~5のいずれか一項に記載の補強用樹脂組成物の硬化物であり、前記第1導体と前記バンプとの継目、及び前記第2導体と前記バンプとの継目のうち、少なくとも一方を覆う補強部と、を備える、
実装構造体。 - 請求項8に記載の実装構造体の製造方法であって、
前記第1導体と前記バンプとの継目、及び前記第2導体と前記バンプとの継目のうち、少なくとも一方を、請求項1~5のいずれか一項に記載の補強用樹脂組成物で覆ってから、前記補強用樹脂組成物を硬化させる、
実装構造体の製造方法。
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CN201980071520.2A CN112955487A (zh) | 2018-12-03 | 2019-11-28 | 补强用树脂组合物、电子元件、制造电子元件的方法、安装结构体以及制造安装结构体的方法 |
PCT/JP2019/046596 WO2020116313A1 (ja) | 2018-12-03 | 2019-11-28 | 補強用樹脂組成物、電子部品、電子部品の製造方法、実装構造体及び実装構造体の製造方法 |
US17/299,149 US20220049085A1 (en) | 2018-12-03 | 2019-11-28 | Reinforcing resin composition, electronic component, method for manufacturing electronic component, mounting structure, and method for manufacturing mounting structure |
TW108143756A TW202031785A (zh) | 2018-12-03 | 2019-11-29 | 補強用樹脂組成物、電子零件、電子零件之製造方法、安裝結構體及安裝結構體之製造方法 |
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JP2006016576A (ja) | 2004-07-05 | 2006-01-19 | Hitachi Chem Co Ltd | 封止用液状エポキシ樹脂組成物及び電子部品装置 |
WO2014203735A1 (ja) | 2013-06-21 | 2014-12-24 | 日産化学工業株式会社 | 特定の末端構造を有する重合体を含む熱硬化性樹脂組成物 |
WO2018216229A1 (ja) | 2017-05-22 | 2018-11-29 | パナソニックIpマネジメント株式会社 | 熱硬化性樹脂組成物、熱硬化性シート、半導体部品、半導体実装品、半導体部品の製造方法、及び、半導体実装品の製造方法 |
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TW201302907A (zh) * | 2011-06-01 | 2013-01-16 | Sumitomo Bakelite Co | 液狀樹脂組成物及利用此液狀樹脂組成物之半導體裝置 |
JP2013014709A (ja) * | 2011-07-05 | 2013-01-24 | Nitto Denko Corp | 電子部品封止用エポキシ樹脂組成物およびそれを用いた電子部品装置 |
JP6288074B2 (ja) * | 2013-03-25 | 2018-03-07 | 日産化学工業株式会社 | 熱硬化性樹脂組成物 |
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JP2006016576A (ja) | 2004-07-05 | 2006-01-19 | Hitachi Chem Co Ltd | 封止用液状エポキシ樹脂組成物及び電子部品装置 |
WO2014203735A1 (ja) | 2013-06-21 | 2014-12-24 | 日産化学工業株式会社 | 特定の末端構造を有する重合体を含む熱硬化性樹脂組成物 |
WO2018216229A1 (ja) | 2017-05-22 | 2018-11-29 | パナソニックIpマネジメント株式会社 | 熱硬化性樹脂組成物、熱硬化性シート、半導体部品、半導体実装品、半導体部品の製造方法、及び、半導体実装品の製造方法 |
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