JP2012244034A - 半導体パッケージ部品の実装構造体および製造方法 - Google Patents
半導体パッケージ部品の実装構造体および製造方法 Download PDFInfo
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- JP2012244034A JP2012244034A JP2011114459A JP2011114459A JP2012244034A JP 2012244034 A JP2012244034 A JP 2012244034A JP 2011114459 A JP2011114459 A JP 2011114459A JP 2011114459 A JP2011114459 A JP 2011114459A JP 2012244034 A JP2012244034 A JP 2012244034A
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- H—ELECTRICITY
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- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
- H01L23/315—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed the encapsulation having a cavity
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Abstract
【課題】 はんだ接合の品質を維持しながら、半導体パッケージ部品と基板を耐久性ある強度で連結する。
【解決手段】 半導体パッケージ部品3を基板1にマウントし、基板1と半導体パッケージ部品3の外周部と間に接着剤を塗布する際、第一塗布として接着剤6aを基板1上に塗布し、その上に第二塗布として接着剤6bを半導体パッケージ部品3の外周部と接着剤6aを結合するように塗布し、その後リフローしてハンダ溶融し、接着剤6a及び6bを硬化させた後、ハンダ接合を凝固させる場合、第一塗布の接着剤部60aの断面積S1と第二塗布の接着剤部60b断面積S2の関係が、S1≦S2を満たす。
【選択図】図1
Description
基板の電極上に塗布されたハンダの上に前記半導体パッケージ部品の電極をマウントするマウント工程と、
粘度η1、チキソ比T1の第一の接着剤を、前記マウントされた前記半導体パッケージ部品よりも外側の、前記基板上の位置に塗布する第一塗布工程と、
前記半導体パッケージ部品の外周部にかかり、前記第一の接着剤の上に、粘度η2、チキソ比T2の第二の接着剤を塗布する第二塗布工程と、
その後、リフロープロセスを通じて、前記第一の接着剤を硬化した第一接着剤部と前記第二の接着剤を硬化した第二の接着剤部とを形成するリフロー硬化工程と、を備え、
前記第一の接着剤と前記第二の接着剤は、30≦η2≦η1≦300(Pa・s)、3≦T2≦T1≦7を満たし、
前記第一の接着剤部と前記第二の接着剤部の、前記基板の実装面に対して垂直方向のそれぞれの断面積は、前記第一の接着剤部の断面積S1と、前記第二の接着剤部の断面積S2の関係がS1≦S2を満たす、半導体パッケージ部品の実装構造体の製造方法である。
前記第一の接着剤の樹脂成分と、前記第二の接着剤の樹脂成分は、同一の高分子組成である、第1の本発明の半導体パッケージ部品の実装構造体の製造方法である。
前記第一の接着剤の溶解度パラメータP1と、前記第二の接着剤の溶解度パラメータP2の差が1.4以下である、第1の本発明の半導体パッケージ部品の実装構造体の製造方法である。
基板電極を有する基板と、
前記基板の上にマウントされ、前記基板電極に当接する部品電極を有する、半導体パッケージ部品と、
前記マウントされた前記半導体パッケージ部品よりも外側の、前記基板上の位置に形成された、第一の接着剤が硬化して形成された第一の接着剤部と、
前記第一の接着剤部の上であって、前記半導体パッケージ部品の外周部にかかる位置に、第二の接着剤が硬化して形成された第二の接着剤部と、を備え、
前記第一の接着剤の粘度η1、チキソ比T1と前記第二の接着剤の粘度η2、チキソ比T2は、30≦η2≦η1≦300(Pa・s)、3≦T2≦T1≦7であり、
前記第一の接着剤部と前記第二の接着剤部の、前記基板の実装面に対して垂直方向のそれぞれの断面積は、前記第一の接着剤部の断面積S1と、前記第二の接着剤部の断面積S2の関係がS1≦S2を満たす、半導体パッケージ部品の実装構造体である。
前記第一の接着剤の樹脂成分と、前記第二の接着剤の樹脂成分は、同一の高分子組成である、第4の本発明の半導体パッケージ部品の実装構造体である。
前記第一の接着剤の溶解度パラメータP1と、前記第二の接着剤の溶解度パラメータP2の差が1.4以下である、第4の本発明の半導体パッケージ部品の実装構造体である。
(実施の形態1)
図1は、本実施の形態1の実装構造体の製造方法を実施するための工程図を示し、(a)図は、基板1の電極2上にクリームハンダ5を印刷する工程、(b)図は、ボール電極4を有する半導体パッケージ部品3を基板1上に、電極2とボール電極4を当接させるように、マウントする工程、(c)図は、第一塗布工程として、第一の接着剤6aを塗布する工程、(d)図は、第二塗布工程として、第一の接着剤6aの上に、そして半導体パッケージ部品3の外周部31にかかるように、第二の接着剤6bを塗布する工程、(e)図は、基板1をリフロー加熱し、半導体パッケージ部品3のボール電極4とクリームハンダ5を溶融し混合させ、接合金属7を形成する工程、(f)図は、第一の接着剤6a及び第二の接着剤6bを硬化させて、接合金属7を凝固させる工程をそれぞれ示す。60aと60bはそれぞれの接着剤6a、6bが硬化した後の接着剤部を示す。ボール電極4は本発明の半導体パッケージ部品の電極の一例である。
(実施の形態2)
図6は、本発明の実施の形態2を示し、第一の接着剤6aの塗布量を塗布巾が1.0mmになるように所定の位置に塗布した後、その上に第二の接着剤6bを半導体パッケージ部品3の外周部31にかかるように、第一の接着剤6aと同量の塗布量で塗布した以外は、実施の形態1と同様の方法で半導体パッケージ実装構造体を得た。このようにして得られた半導体パッケージ実装構造体の接合断面を図6に示している。
(比較例)
図7は比較例を説明するための図である。上述した実施の形態1と同様の接着剤を用いて、接着剤6aの塗布量を塗布巾が1.4mmになるように塗布した後、その上に接着剤6bを半導体パッケージ部品3の外周部31にかかるように少量塗布した以外は、実施の形態1と同様の方法で半導体パッケージ実装構造体を得た。このようにして得られた半導体パッケージ実装構造体の接合断面を図7に示している。ここで図7はS1>S2の場合の、実装完了状態の接合断面図を示す。
(実施の形態3)
第一の接着剤6aに、溶解度パラメータP1が10.9のエポキシ系接着剤(粘度71Pa・s、チクソ比6.5)を、第二の接着剤6bに、溶解度パラメータP2が9.5のアクリル系接着剤(粘度59Pa・s、チクソ比5.0)を、すなわち溶解度パラメーターの差が1.4である接着剤の組み合わせを使用した。その他の製造工程は、上述した実施の形態1と同じ方法で行い半導体パッケージ部品実装構造体を作成した。
2 電極
3 半導体パッケージ部品
4 ボール電極
5 接合材料(クリームハンダ)
6a 第一の接着剤
6a1 第一の接着剤
6a2 二段目の多段接着剤
6an−1 第n−1段目の多段接着剤
6an 第n段目の多段接着剤
6b 第二の接着剤
7 接合金属
8 仮想線
9 部品接着剤
10 電子部品
H1 半導体パッケージ部品高さ
S1 接着剤部60aの断面積
S2 接着剤部60bの断面積
L1 半導体パッケージ部品の外周部から第一の接着剤の外側までの距離
Claims (6)
- 基板の電極上に塗布されたハンダの上に前記半導体パッケージ部品の電極をマウントするマウント工程と、
粘度η1、チキソ比T1の第一の接着剤を、前記マウントされた前記半導体パッケージ部品よりも外側の、前記基板上の位置に塗布する第一塗布工程と、
前記半導体パッケージ部品の外周部に接触し、前記第一の接着剤の上に、粘度η2、チキソ比T2の第二の接着剤を塗布する第二塗布工程と、
その後、リフロープロセスを通じて、前記第一の接着剤を硬化した第一接着剤部と前記第二の接着剤を硬化した第二の接着剤部とを形成するリフロー硬化工程と、を備え、
前記第一の接着剤と前記第二の接着剤は、30≦η2≦η1≦300(Pa・s)、3≦T2≦T1≦7を満たし、
前記第一の接着剤部と前記第二の接着剤部の、前記基板の実装面に対して垂直方向のそれぞれの断面積は、前記第一の接着剤部の断面積S1と、前記第二の接着剤部の断面積S2の関係がS1≦S2を満たす、半導体パッケージ部品の実装構造体の製造方法。 - 前記第一の接着剤の樹脂成分と、前記第二の接着剤の樹脂成分は、同一の高分子組成である、請求項1記載の半導体パッケージ部品の実装構造体の製造方法。
- 前記第一の接着剤の溶解度パラメータP1と、前記第二の接着剤の溶解度パラメータP2の差が1.4以下である、請求項1記載の半導体パッケージ部品の実装構造体の製造方法。
- 基板電極を有する基板と、
前記基板の上にマウントされ、前記基板電極に当接する部品電極を有する、半導体パッケージ部品と、
前記マウントされた前記半導体パッケージ部品よりも外側の、前記基板上の位置に形成された、第一の接着剤が硬化して形成された第一の接着剤部と、
前記第一の接着剤部の上であって、前記半導体パッケージ部品の外周部にかかる位置に、第二の接着剤が硬化して形成された第二の接着剤部と、を備え、
前記第一の接着剤の粘度η1、チキソ比T1と前記第二の接着剤の粘度η2、チキソ比T2は、30≦η2≦η1≦300(Pa・s)、3≦T2≦T1≦7であり、
前記第一の接着剤部と前記第二の接着剤部の、前記基板の実装面に対して垂直方向のそれぞれの断面積は、前記第一の接着剤部の断面積S1と、前記第二の接着剤部の断面積S2の関係がS1≦S2を満たす、半導体パッケージ部品の実装構造体。 - 前記第一の接着剤の樹脂成分と、前記第二の接着剤の樹脂成分は、同一の高分子組成である、請求項4記載の半導体パッケージ部品の実装構造体。
- 前記第一の接着剤の溶解度パラメータP1と、前記第二の接着剤の溶解度パラメータP2の差が1.4以下である、請求項4記載の半導体パッケージ部品の実装構造体。
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