JP2012104674A - 半導体装置の製法 - Google Patents
半導体装置の製法 Download PDFInfo
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- JP2012104674A JP2012104674A JP2010252315A JP2010252315A JP2012104674A JP 2012104674 A JP2012104674 A JP 2012104674A JP 2010252315 A JP2010252315 A JP 2010252315A JP 2010252315 A JP2010252315 A JP 2010252315A JP 2012104674 A JP2012104674 A JP 2012104674A
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- epoxy resin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
- H01L23/293—Organic, e.g. plastic
- H01L23/295—Organic, e.g. plastic containing a filler
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/5046—Amines heterocyclic
- C08G59/5053—Amines heterocyclic containing only nitrogen as a heteroatom
- C08G59/5073—Amines heterocyclic containing only nitrogen as a heteroatom having two nitrogen atoms in the ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
- C08G59/686—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- H01—ELECTRIC ELEMENTS
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/16—Fillings or auxiliary members in containers or encapsulations, e.g. centering rings
- H01L23/18—Fillings characterised by the material, its physical or chemical properties, or its arrangement within the complete device
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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
- H01L2224/01—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
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
- H01L2224/45001—Core members of the connector
- H01L2224/45099—Material
- H01L2224/451—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
- H01L2224/45144—Gold (Au) as principal constituent
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Epoxy Resins (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Abstract
Description
(A)下記の一般式(1)で表されるエポキシ樹脂。
(C)アミン系硬化促進剤。
(D)無機質充填剤。
(x)熱処理時間(t分)と熱処理温度(T℃)との関係が、t≧3.3×10-5exp(2871/T)を満足する領域からなる熱処理条件〔ただし、185℃≦熱処理温度T℃≦300℃である。〕
(x)熱処理時間(t分)と熱処理温度(T℃)との関係が、t≧3.3×10-5exp(2871/T)を満足する領域からなる熱処理条件〔ただし、185℃≦熱処理温度T℃≦300℃である。〕
一般式(1)で表されるビフェニル型エポキシ樹脂〔式(1)中、Xは単結合であり、R1〜R4は全てCH3である:エポキシ当量192、融点105℃〕
〔エポキシ樹脂a2〕
トリフェニルメタン型多官能エポキシ樹脂(エポキシ当量169、融点60℃)
ビフェニルアラルキル型フェノール樹脂(水酸基当量203、軟化点65℃)
〔フェノール樹脂b2〕
フェノールノボラック樹脂(水酸基当量104、軟化点60℃)
〔フェノール樹脂b3〕
キシリレンノボラック型フェノール樹脂(水酸基当量175、軟化点72℃)
〔フェノール樹脂b4〕
トリフェニルメタン型フェノール樹脂(水酸基当量103、軟化点83℃)
〔フェノール樹脂b5〕
トリフェニルメタン型フェノール樹脂(水酸基当量97、軟化点111℃)
2−フェニル−4−メチル−5−ヒドロキシメチルイミダゾール
〔硬化促進剤c2〕
2,4−ジアミノ−6−〔2′−ウンデシルイミダゾリル−(1′)〕−エチル−s−トリアジン
〔硬化促進剤c3〕
テトラフェニルホスホニウム・テトラ−p−トリルボレート
球状溶融シリカ粉末(平均粒径13μm)
カーボンブラック
水酸化マグネシウム
3−メタクリロキシプロピルトリメトキシシラン
酸化ポリエチレンワックス
下記の表1〜表2に示す各成分を同表に示す割合で配合しミキサーにて充分混合した後、2軸混練機を用い100℃で2分間溶融混練した。つぎに、この溶融物を冷却した後、粉砕することにより目的とする粉末状のエポキシ樹脂組成物a〜lを作製した。
175℃の熱板上にてエポキシ樹脂組成物を溶融させ、ゲル化するまでの時間を測定した。なお、硬化性を考慮すると、ゲル化時間は60秒以下が妥当な時間である。
エポキシ樹脂組成物を用い、金型温度175℃,硬化時間90秒にて成形し、型開き10秒後にショアD硬度計を用いて測定した硬化物のショアD硬度の値を熱時硬度とした。すなわち、この熱時硬度の値が高いほど硬化性が良好であるといえる。
〔実施例1〜12、比較例1〜24〕
つぎに、上記各エポキシ樹脂組成物を用いて半導体素子を、TOWA社製の自動成型機(CPS−40L)によりトランスファー成形(成形条件:175℃×90秒)にて樹脂封止し、さらに175℃×3時間にて後硬化することにより半導体装置(LQFP−144:大きさ20mm×20mm×厚み1.4mm)を作製した。続いて上記半導体装置に対して下記の条件にて加熱処理(未処理も含む)を行なうことにより目的とする半導体装置を得た。得られた半導体装置の高温高湿信頼性および金線ワイヤー流れの各評価を下記の方法に従って評価した。
作製した半導体装置に対して、上述の条件にて熱処理を加えた(熱処理なしも含む)。このように処理して得られた半導体装置を、130℃×85%RH環境下でのHAST試験(Highly Accelerated Steam and Temperatuer Test:半導体装置を130℃×85%RHの条件下で暴露しながら一定時間毎の抵抗値を測定:バイアスなし)に供した。そして、HAST試験処理後の抵抗値の測定を行ない、この抵抗値の上昇率が10%以上であった場合を断線不良とし、この断線不良が発生するHAST処理時間が、上述の条件にて熱処理を加えた(未処理の熱処理なしも含む)場合、その熱処理前の場合に比較してどの程度長くなったかを算出し(熱処理を加えた場合の断線不良が発生するHAST処理時間/熱処理前の断線不良が発生するHAST処理時間)、高温高湿信頼性の寿命上昇率として評価した。
上記エポキシ樹脂組成物a〜lを用い、金線ワイヤー(ワイヤー径23μm、ワイヤー長6mm)を張ったLQFP−144(大きさ:20mm×20mm×厚み1.4mm)を、TOWA社製の自動成型機(CPS−40L)により成型(条件:175℃×90秒)し、175℃×3時間で後硬化することにより半導体装置を得た。すなわち、上記半導体装置の作製時において、図2に示すように、ダイパッド1を有するLQFPのパッケージフレームに金線ワイヤー2を張り、これを用い上記エポキシ樹脂組成物により樹脂封止してパッケージを作製した。図2において、3は半導体チップ、4はリードピンである。そして、作製したパッケージを軟X線解析装置を用いて、金線ワイヤー流れ量を測定した。測定は、各パッケージから10本ずつ金線ワイヤーを選定して測定し、図3に示すように、正面方向からの金線ワイヤー2の流れ量を測定した。そして、金線ワイヤー2の流れ量の最大部分となる値をそのパッケージの金線ワイヤー流れ量の値(dmm)とし、金線流れ率〔(d/L)×100〕を算出した。なお、Lは金線ワイヤー2間の距離(mm)を示す。そして、上記金線流れ率が6%以上のものを×、金線流れ率が4%以上6%未満のものを△、金線流れ率が4%未満のものを○として表示した。
Claims (3)
- 上記(C)成分であるアミン系硬化促進剤の含有量が、(B)成分であるフェノール樹脂100重量部に対して1〜20重量部である請求項1記載の半導体装置の製法。
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MY157583A (en) | 2016-06-30 |
CN102468192A (zh) | 2012-05-23 |
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