JP5080532B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP5080532B2 JP5080532B2 JP2009142145A JP2009142145A JP5080532B2 JP 5080532 B2 JP5080532 B2 JP 5080532B2 JP 2009142145 A JP2009142145 A JP 2009142145A JP 2009142145 A JP2009142145 A JP 2009142145A JP 5080532 B2 JP5080532 B2 JP 5080532B2
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- Prior art keywords
- lead
- sealing body
- semiconductor device
- electrode terminal
- semiconductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Description
絶縁性樹脂からなる封止体と、
前記封止体の周囲に沿って、前記封止体の内外に亘って設けられる複数のリードと、
主面および裏面を有するタブと、
主面および裏面を有しており、その主面上に複数の電極端子と、それぞれが複数の半導体素子によって構成される複数の回路部とを有する半導体チップと、
前記複数の電極端子と前記リードとを接続する複数の導電性のワイヤと、
前記複数の電極端子に第1の電位を供給するために、前記複数の電極端子と前記タブの主面とを接続する複数の導電性のワイヤとを有する半導体装置(例えば、ノンリード型半導体装置)であって、
前記半導体チップの裏面は前記タブの主面上に固定されており、
前記複数の回路部は、第1の回路部(特定回路部)、第2の回路部を含んでおり、
前記複数の電極端子は、前記第1の回路部に外部信号を入力するための第1の電極端子と、前記第1の回路部に前記第1の電位(グランド電位)を供給するための第2の電極端子と、前記第2の回路部と接続する第3の電極端子と、前記第2の回路部に前記第1の電位を供給するための第4の電極端子とを有しており、
前記複数のリードは、第1のリード(信号用リード)と、第2のリード(信号用リード)と、前記第1のリードと第2のリードの間に配置された第3のリード(グランド用リード)とを含んでおり、
前記第1の電極端子は導電性のワイヤを介して前記第1のリードと接続しており、
前記第2の電極端子は導電性のワイヤを介して前記第3のリードと接続しており、
前記第3の電極端子は導電性のワイヤを介して前記第2のリードと接続しており、
前記第4の電極端子は導電性のワイヤを介して共通グランドとなる前記タブと接続しており、
前記第3のリードと前記タブは電気的に分離されていることを特徴とし、高周波モジュールを構成している。
前記第1の回路部は前記第1のリード、および前記第1の電極端子を介して入力される外部信号を増幅するための増幅回路(低雑音増幅器:LAN)であり、無線信号がアンテナを介して変換された電気信号を増幅するための回路である。
前記第2の回路部は、前記第1の回路部によって増幅された信号を処理する機能の少なくとも一部を有する。
図1乃至図13は本発明の一実施形態(実施形態1)である半導体装置(高周波パワーモジュール)及びその高周波パワーモジュールを組み込んだ無線通信装置に係わる図である。図1乃至図5は高周波パワーモジュールに係わる図であり、図6乃至図11は高周波パワーモジュールの製造方法に係わる図であり、図12及び図13は無線通信装置に係わる図である。
(1)半導体装置1、即ち高周波パワーモジュール1においては、半導体素子(半導体チップ)3の電極端子9はワイヤ10を介してリード7に接続される以外にタブ4にも接続(ダウンボンディング)される。そして、このダウンボンディングはタブ4が共通グランドとなることから、特定回路部11である低雑音増幅器24のグランド電極端子(半導体素子の電極端子)はタブ4には接続されず、独立したリード端子(グランドリード)に接続される。低雑音増幅器24は微弱な信号を増幅するため、グランド電位の変動は低雑音増幅器24の出力の変動となるとともに、信号波形も歪むが、低雑音増幅器24のグランドは他の回路部のグランドと分離されていることから、低雑音増幅器24の出力の変動や信号波形の歪みを抑制できる。この結果、無線通信装置に組み込むことによって出力変動や歪みのない良好な通話が可能になる。
図14は本発明の他の実施形態(実施形態2)である高周波パワーモジュールの封止体の一部を切り欠いた模式的平面図である。
図15は本発明の他の実施形態(実施形態3)である高周波パワーモジュールの封止体の一部を切り欠いた模式的平面図である。
図16及び図17は本発明の他の実施形態(実施形態4)である高周波パワーモジュールに係わる図であり、図16は高周波パワーモジュールの封止体の一部を切り欠いた模式的平面図、図17は高周波パワーモジュールの模式的断面図である。
図19乃至図30は本発明の他の実施形態(実施形態5)である高周波パワーモジュール(半導体装置)に係わる図である。本実施形態5の高周波パワーモジュールは、基本的に実施形態1の高周波パワーモジュールと同じである。
本実施形態5の高周波パワーモジュール1は、図30に示すように、トリプルバンド構成(GSM通信,DCS通信及びPCS通信)の無線通信装置(携帯電話機等の携帯用無線機器)に組み込まれて使用される。図30は図12にほぼ対応し、アンテナ20からベースバンド22に至る送・受信系の回路構成が示されている。本実施形態5では、アンテナ20が接続されるアンテナスイッチ21に接続される帯域通過フィルタ23から一対の位相が逆相となる相補信号が出力され、この相補信号が2入力・2出力構成の低雑音増幅器(LNA)24に入力される構成になり、LNA24の出力信号は順次各回路部で処理されてベースバンド22や送・受信系切替えスイッチ36に送られるようになっている。
即ち、リード7の第2部分7dは樹脂封止体2の裏面に露出せず、樹脂封止体2内を延在する構造になっていることから、図29に示すように高周波パワーモジュール1を実装基板80に実装する際、リード7及びチップ搭載部4を実装基板80のランド81や固定部82に半田83を介して固定する場合、リード7とランド81を固定する半田83と、チップ搭載部4を固定部82に固定する半田83とが接触、または電気的短絡を発生するほどの接近をすることを考慮しなくてもよいことから、第2部分7dの端部をチップ搭載部4の外周部に接近させることができるようになる。
図31は本発明の他の実施形態(実施形態6)である、半導体チップを支持するタブが半導体チップよりも小さい構成(小タブ構成)の高周波パワーモジュールの模式的断面図、図32は本実施形態6の高周波パワーモジュールの製造に使用される小タブ構成のリードフレームの一部を示す模式的平面図である。
10…ワイヤ、10a…ダウンボンドワイヤ、10b…ワイヤ、11…特定回路部、13…リードフレーム、14…単位リードフレームパターン、15a〜15c…ガイド孔、16,17…エジェクターピン孔、18…枠部、
20…アンテナ、21…アンテナスイッチ、22…ベースバンドチップ、23…帯域通過フィルタ、24…低雑音増幅器(LNA)、25…可変増幅器、26…ミキサ、27…ローパスフィルタ、28…PGA、29…ローパスフィルタ、
30…PGA、31…ローパスフィルタ、32…PGA、33…ローパスフィルタ、34…復調器、35…ADC/DAC&DCオフセット用制御論理回路部、37,38…ローカル信号用分周器、
40…90度位相変換器、41…RFシンセサイザ、42…IFシンセサイザ、43…バッファ、44…RFVCO、45…IFVCO(中間波電圧制御発振器)、46,47…分周器、48,49…スイッチ、
50…VCXO(電圧制御水晶発振器)、
60…ロジック回路、61…ミキサ、62…90度位相変換器、63…加算器、64…ミキサ、65…DPD(デジタルフェーズディテクタ)、66…ループフィルタ、67…TXVCO(送信波電圧制御発信器)、68…パワーモジュール、
70…カプラー、71…増幅器、72…ミキサ、
80…実装基板、81…ランド、82…タブ固定部、83…半田、85…第1半導体基板、86…絶縁層、87…第2半導体基板、89…絶縁体、
100…低雑音増幅器(LNA)、101…高周波電圧制御発振器(RFVCO)、102…ミキサ、
200…スリット。
Claims (18)
- 上面と、前記上面に対向する裏面と、前記上面及び裏面に挟まれた側面とを有する樹脂封止体と、
前記樹脂封止体の周囲に沿って、前記樹脂封止体の内外に亘って設けられる複数のリードと、
前記複数のリードに囲まれた領域に配置されたチップ搭載部と、
その主面上に複数の電極端子と、それぞれが複数の半導体素子によって構成される複数の回路部とを有し、前記チップ搭載部上に搭載され、かつ、前記樹脂封止体により封止された四角形状の半導体チップと、
前記半導体チップの複数の電極端子と前記複数のリードとを接続する複数の導電性ワイヤとを有し、
前記半導体チップの複数の回路部は、一対の入力を有する差動増幅回路部を含み、
前記複数の電極端子は、前記差動増幅回路部の一対の入力に対応する第1電極端子及び第2電極端子とを含み、
前記第1電極端子及び第2電極端子は、前記半導体チップの一辺に沿って、互いに隣接して配置され、
前記複数のリードは、前記樹脂封止体の裏面に露出する第1部分と、前記第1部分から前記チップ搭載部に向かって内側に伸びる第2部分とを有し、
前記複数の導電性のワイヤの両端部は、前記複数のリードの第2部分の端部及び前記半導体チップの複数の電極端子にそれぞれ接続されていることを特徴とする半導体装置。 - 前記差動増幅回路部の一対の入力に対応する第1電極端子及び第2電極端子には、一対の位相の異なる相補信号が入力されることを特徴とする請求項1に記載の半導体装置。
- 前記複数のリードの第2部分は、前記樹脂封止体にその全体が覆われていることを特徴とする請求項1に記載の半導体装置。
- 前記複数のリードの第2部分は、前記第1部分よりも、その厚さが薄いことを特徴とする請求項1に記載の半導体装置。
- 前記差動増幅回路部は、携帯用無線機器において、アンテナを介して変換された電気信号を増幅するための回路部であることを特徴とする請求項1に記載の半導体装置。
- 前記第1電極端子は、前記第2電極端子より、前記半導体チップの一つの角部に近く配置され、前記第1電極端子に電気的に接続されるリードの端部は、前記第2電極端子に電気的に接続されるリードの端部より前記半導体チップの一辺に近い位置まで伸びていることを特徴とする請求項1に記載の半導体装置。
- 前記第1電極端子と前記リードを接続する前記導電性ワイヤの長さと、前記第2電極端子と前記リードを接続する前記導電性ワイヤの長さは同じ長さであることを特徴とする請求項6に記載の半導体装置。
- 前記チップ搭載部は、平面的に見て、前記半導体チップより大きいことを特徴とする請求項1に記載の半導体装置。
- 前記半導体チップが搭載された面と反対側のチップ搭載部の裏面は、前記樹脂封止体の外部に露出していることを特徴とする請求項1に記載の半導体装置。
- 前記半導体チップの複数の電極端子は、複数の第1固定電位用電極端子と複数の第2固定電位用電極端子とを含み、前記複数の第1固定電位用電極端子は、前記複数のワイヤを介して前記複数のリードにそれぞれ接続され、前記複数の第2固定電位用電極端子は、前記複数のワイヤを介して前記チップ搭載部の表面にそれぞれ接続されていることを特徴とする請求項1に記載の半導体装置。
- 前記複数の第1及び第2固定電位用電極端子の各々は、グランド電位用電極端子であることを特徴とする請求項10に記載の半導体装置。
- 前記複数のリードの第1部分は、前記樹脂封止体の側面から露出するように前記樹脂封止体の周囲に突出していることを特徴とする請求項1に記載の半導体装置。
- 前記半導体チップが搭載された面と反対側になるチップ搭載部の裏面は、前記樹脂封止体内に位置していることを特徴とする請求項1に記載の半導体装置。
- 前記チップ搭載部のチップ搭載面と、前記リードの第1部分の上面及び第2部分の上面は同一平面上に位置していることを特徴とする請求項1に記載の半導体装置。
- 前記リードの第1部分の厚さよりも前記チップ搭載部及び第2部分の厚さは薄くなり、前記チップ搭載部及び第2部分は前記樹脂封止体内に位置していることを特徴とする請求項1に記載の半導体装置。
- 前記チップ搭載部と前記リードの第1部分は段差が付き、前記チップ搭載部は前記樹脂封止体内に位置していることを特徴とする請求項1に記載の半導体装置。
- 前記リードの第1部分から屈曲して前記第2部分が延在して前記樹脂封止体内に前記第2部分が位置していることを特徴とする請求項1に記載の半導体装置。
- 前記チップ搭載部は前記半導体チップよりも小さくなっていることを特徴とする請求項1に記載の半導体装置。
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