JP4744070B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP4744070B2 JP4744070B2 JP2003342076A JP2003342076A JP4744070B2 JP 4744070 B2 JP4744070 B2 JP 4744070B2 JP 2003342076 A JP2003342076 A JP 2003342076A JP 2003342076 A JP2003342076 A JP 2003342076A JP 4744070 B2 JP4744070 B2 JP 4744070B2
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- Japan
- Prior art keywords
- conductive
- film
- semiconductor device
- conductive path
- insulating resin
- Prior art date
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- H01L2924/156—Material
- H01L2924/15786—Material with a principal constituent of the material being a non metallic, non metalloid inorganic material
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Description
前記絶縁性樹脂の裏面と前記導電路の側面は、実質同一のエッチング面を描いていることで解決するものである。
前記導電路の側面は、湾曲にエッチングされ、前記絶縁性樹脂裏面の少なくとも一部は、このエッチング面と連続したカーブを描くことで解決するものである。
されたディスクリート型、一つのICやLSIが封止されたBGA型、複数のTRまたは複数のICが実装されたマルチチップ型、または複数のTR、複数のICおよび/または受動素子が実装され、導電路として配線が用いられ、所望の回路が構成されたハイブリッド型等に大まかに分類することができる。つまり半導体素子の殆どのパッケージをこの方法一つで実現できる重要なものである。
<参考例1>
ディスクリート型の半導体装置を説明する参考例
図5は、TRを、パッケージしたものであり、絶縁性樹脂35に埋め込まれ、導電路32〜34の裏面が露出されている。
<参考例2>
マルチチップ型(またはハイブリッド型)の半導体装置を説明する参考例
続いて、図6にハイブリッド型またはマルチチップ型の半導体装置60を示す。トランジスタチップのみで構成されているのでマルチチップ型であり、この中にコンデンサ、抵抗等の受動素子が実装されればハイブリッド型と成る。
<参考例3>
BGA型の半導体装置を説明する参考例
まず半導体装置70について図7を採用して説明する。図には、絶縁性樹脂71に以下の構成要素が埋め込まれている。つまりボンディングパッド72A…と、このボンディングパッド72A…と一体の配線72Bと、配線72Bと一体で成り、この配線72Bの他端に設けられた外部接続電極72Cが埋め込まれている。更にはこの導電パターン72A〜72Cに囲まれた一領域に設けられた放熱用の電極72Dと、この放熱用の電極72Dの上に設けられた半導体素子73が埋め込まれている。尚、半導体素子73は、絶縁性接着手段ADを介して前記放熱用の電極72Dと固着され、図7Aでは、点線で示されている。またボンディングを可能とするため、ボンディングパッド72Aが半導体素子73の周囲に位置するようにパターニングされ、この半導体素子73のボンディング電極74とボンディングパッド72Aは、金属細線Wを介して電気的に接続されている。
面に延在させることができる。一般に、実装基板側に設けられた配線は、前記半導体装置の固着領域を迂回して配置されるが、前記絶縁被膜18の形成により迂回せずに配置できる。しかも絶縁性樹脂71、絶縁性接着手段ADが導電パターンよりも飛び出しているため、実装基板側の配線と導電パターンとの間に隙間を形成でき、短絡を防止することができる。
<参考例4>
BGA型の半導体装置78を説明する参考例
まず図8於いて、半導体素子73をフェイスダウンで実装した事、導電パターンの上に流れ防止膜DMを配置した事、絶縁性接着手段ADの代わりにアンダーフィル材AFを採用した事以外は、実質同一であるため、この点について述べる。
<本発明の実施例1>
BGA型の半導体装置79を説明する実施例
図8では、パッド72Aには、配線72B、外部接続電極72Cが一体で形成されていたが、ここでは図9に示す如く、パッド72Aの裏面が外部接続電極と成っている。
マルチチップ型半導体装置81を説明する第6の実施の形態
図9の実装法を活用し、複数の半導体チップ72A、72Bを実装した半導体装置81について図10を参照して説明する。
<本発明の実施例2>
半導体装置の特徴および製造方法を説明する実施例
図12〜図13で示す特徴は、絶縁性樹脂90から成る突出部91を形成し、導電路92は、前記突出部91よりも内側に入り、そこに凹み部93が形成されることにある。これにより、半田94の接続強度の増大、半田または導電路92同士の短絡防止、半導体装置裏面の摩擦係数の減少を実現できるものである。
続いて、少なくとも導電路102となる領域を除いた導電箔100を、導電箔100の厚みよりも薄く除去する工程がある。
続いて、図17の如く、分離溝101が形成された導電箔100に回路素子105を電気的に接続して実装する工程がある。
更に、図18に示すように、前記導電箔100および分離溝101に絶縁性樹脂103を付着する工程がある。これは、トランスファーモールド、インジェクションモールド、またはディッピングにより実現できる。樹脂材料としては、エポキシ樹脂等の熱硬化性樹脂がトランスファーモールドで実現でき、ポリイミド樹脂、ポリフェニレンサルファイド等の熱可塑性樹脂はインジェクションモールドで実現できる。
その結果、約40μmの厚さの導電路102として分離される。(以上図20参照)
尚、導電路102の裏面にAuやAgの導電被膜を被着しても良い。この図14〜図17の導電箔の裏面に、前もってこの導電被膜を形成しておけば良い。被着方法は、例えばメッキである。またこの導電被膜は、エッチングに対して耐性がある材料がよい。
以上の製造方法からも判るように、本製造方法により、色々な半導体装置が製造できる。能動素子(半導体チップ)としてトランジスタ、ダイオード、ICまたはLSIを1つ実装したディスクリート型やBGA型、また前記能動素子を複数個実装したマルチチップ型、更には、能動素子(半導体チップ)としてトランジスタ、ダイオード、ICまたはLSI、受動素子としてチップ抵抗、チップコンデンサを実装し、所望の回路を実現するために導電路として配線も形成することで構成されるハイブリッドIC型、等色々な半導体装置が展開できる。
41、47 結晶粒界
42 金属細線
43 半導体チップ
44 絶縁性樹脂
45、48 結晶粒
50 配線
51 ダイパッドまたはボンディングパッド
52 湾曲構造
53 ひさし
Claims (2)
- Cuを主材料とし、Z軸よりもX軸−Y軸方向の成長が大きい圧延により形成され、膜厚が100μm〜200μmの圧延導電膜よりなる矩形の導電路と、
前記導電路の上面に形成された2μm〜10μmのAgから成る導電被膜と、
前記導電路と前記導電被膜を介して、金属細線により電気的に接続された半導体素子と、
前記半導体素子および前記金属細線の接続部の裏面が露出されて外部接続電極となる前記導電路を封止する絶縁性樹脂とを具備し、
前記導電路上面の主領域は、前記導電被膜が設けられ、前記主領域を除いた領域には酸化銅が形成され、前記酸化銅と前記絶縁性樹脂は化学的な結合により接着される事を特徴とする半導体装置。 - 前記導電路は、Ni、Si、ZnおよびSnが不純物として採用されたもの、Zn、SnまたはCrが不純物として採用されたもの、またはZn、FeおよびPが不純物として採用されたものである請求項1に記載の半導体装置。
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JPH0846082A (ja) * | 1994-07-29 | 1996-02-16 | Sanyo Electric Co Ltd | 混成集積回路装置 |
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