JP5390064B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP5390064B2 JP5390064B2 JP2006234061A JP2006234061A JP5390064B2 JP 5390064 B2 JP5390064 B2 JP 5390064B2 JP 2006234061 A JP2006234061 A JP 2006234061A JP 2006234061 A JP2006234061 A JP 2006234061A JP 5390064 B2 JP5390064 B2 JP 5390064B2
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- JP
- Japan
- Prior art keywords
- semiconductor device
- die pad
- chip
- sealing body
- electrode
- 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.)
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- 208000013201 Stress fracture Diseases 0.000 description 1
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Classifications
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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
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- 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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Description
図1は、本発明の一実施の形態の半導体装置の全体構成の一例を模式的に示す平面図である。図2(a)は図1のA−A線で切断した様子を模式的に示す断面図であり、(b)はB−B線で切断した様子を模式的に示す断面図であり、(c)は板状電極の構成を示す断面図である。図3は、ダイパッドの様子を模式的に示す断面図である。図4は、ダイパッド間の離間距離を示す断面説明図である。図5(a)はダイパッド部の厚さがリードより厚い構成のリードフレームを用いて図1に示す構成の半導体装置を形成した場合のA−A線での切断の様子を模式的に示す断面図であり、(b)はB−B線での切断の様子を示す断面図である。図6は、本発明の半導体装置で使用する半導体チップの一例を示した断面図である。
本実施の形態では、前記実施の形態1で述べたように、一枚構成のダイパッドでも第1端面31aの切れ込みを深く形成しておくことにより、ダイパッドを分割構成した場合に使用されるモールド金型で、モールドが行える場合について説明する。
本実施の形態では、前記実施の形態2と同様に、ダイパッド30が分割構成されていない他の例について説明する。図12(a)に示すように、ダイパッド30上に、例えばMOSFETであるチップ21aが搭載された場合を挙げることができる。かかる場合でも、前記金型封止で述べたように、ダイパッド30の第1端面31aが深く形成されているため、モールド時にレジン漏れを防止して、十分な精度で封止体40を形成することができる。
本実施の形態では、前記実施の形態2と同様に、ダイパッド30に第1端面31aが形成されて、かかる第1端面31aが封止体40の内部に内包されている半導体装置10の他の例を挙げる。かかる場合には、図13(a)に示すように、例えばダイパッド30上に2個のNチャンネルMOSFETであるチップ21aと、ダイオードであるチップ21bが搭載されている。
本実施の形態では、前記実施の形態1で説明した半導体装置10の実装形態について説明する。半導体装置10は、図14の回路ブロック図に示すように、コントローラIC80と電気的に接続されて使用される。
前記実施の形態で述べた構成の半導体装置10においては、実装に際して、電源用の配線と、負荷用の配線とは、例えば、BUS−BARと呼ばれるような複数個の半導体装置10を一括して処理できるような配線レイアウトが採用される場合がある。
前記実施の形態6では、前記実施の形態1で説明した半導体装置10を用いた場合のBUS−BAR配線における優位性を述べたが、BUS−BAR配線を利用して半導体装置10の放熱性の向上を図ることもできる。
本実施の形態では、前記実施の形態1で説明した半導体装置10の板状電極61の変形例を示したものである。
前記実施の形態1で説明した半導体装置10の製造方法では、例えば、第1チップ21、第2チップ22を、第1ダイパッド31、第2ダイパッド32上にそれぞれダイボンディングする際に、半田ペーストを用いる場合について説明した。しかし、かかるダイボンド材には、半田ペーストの他に、Agペースト等のように他のペーストを用いても製造することができる。
本実施の形態では、前記実施の形態1で説明した半導体装置10の変形例について説明する。
本実施の形態では、前記実施の形態1で説明した半導体装置10の変形例について説明する。
本実施の形態では、前記実施の形態1で説明した半導体装置10の変形例について説明する。
本実施の形態では、前記実施の形態1で説明した半導体装置10の変形例について説明する。
本実施の形態では、前記実施の形態1で説明した半導体装置10の変形例について説明する。
本実施の形態では、前記実施の形態1で説明した半導体装置10の変形例について説明する。
前記実施の形態では、いずれの場合にも、ダイパッドのチップ搭載面と、チップと電気的接続がなされるリードの接続面とが、異なる高さの状態でモールドされている場合を例に挙げて説明した。
10a 半導体装置
20 半導体チップ(チップ)
21 第1チップ
21a チップ(パワートランジスタ)
21b チップ
21c チップ
22 第2チップ
22a 駆動用回路
22b チップ
22c チップ
30 ダイパッド
30a 端部
31 第1ダイパッド
31a 第1端面
31s 搭載面
32 第2ダイパッド
32s 搭載面
33 露出部分
40 封止体
41 第1辺
42 第2辺
43 第3辺
50 リードフレーム
50a リード
50b リード
50c リード
50d リード
51 出力用ピン
51s 接続面
52 制御用ピン
52s 接続面
61 板状電極
61a チップ側電極接続部
61b リード用電極接続部
61c 連結部
61d 基部
62 板状電極
62a 凹部
63 板状電極
64 板状電極
65 板状電極
65a チップ側電極接続部
65b リード用電極接続部
65c 連結部
70 ワイヤ
70a ワイヤ
70b ワイヤ
70c ワイヤ
70d ワイヤ
70e ワイヤ
70A ワイヤ
70B ワイヤ
70C ワイヤ
70D ワイヤ
70E ワイヤ
70F ワイヤ
70G ワイヤ
70H ワイヤ
80 コントローラIC
100 電源用BUS−BAR
200 負荷用BUS−BAR
201 基板(半導体基板)
201A n+型単結晶シリコン基板
201B n−型単結晶シリコン層
201C 基板(半導体基板)
201D p++型単結晶シリコン基板
201E n+型単結晶シリコン層
203 酸化シリコン膜
205 p型ウエル
206 フィールド絶縁膜
207 p−型半導体領域
208 n+型半導体領域
210 溝
211 熱酸化膜
212 ゲート電極
213 多結晶シリコンパターン
216 絶縁膜
217 コンタクト溝
218 コンタクト溝
219 コンタクト溝
220 p+型半導体領域
222 バリア導体膜
223 シード膜
225 導電性膜
226 配線
227 配線
228 配線
231 窒化シリコン膜
232 ポリイミド樹脂膜
233 開口部
236 バンプ下地膜
237 Ti膜
238 Ni膜
239 Au膜
240 引き出し電極
241 バンプ電極
a Gate端子
b Cathode端子
c Anode端子
d SenseSource端子
e SenseGND端子
A VB端子
B Vin端子
C Diag端子
D C1端子
E C2端子
F VCP端子
G VDDTEST端子
H GND端子
h1 高さ
h2 高さ
h3 高さ
Claims (15)
- パワートランジスタを含む第1半導体チップと、
前記パワートランジスタを駆動する駆動用回路を含み、前記第1半導体チップと電気的に接続された第2半導体チップと、
前記第1半導体チップが搭載された第1ダイパッドと、
前記第2半導体チップが搭載された第2ダイパッドと、
前記第1半導体チップのパワートランジスタの出力用電極と電気的に接続された出力用ピンと、
前記第2半導体チップの駆動用回路と電気的に接続された制御用ピンと、
第1辺、および前記第1辺と対向する第2辺を有し、前記第1半導体チップ、前記第2半導体チップ、前記第1ダイパッドの一部、前記第2ダイパッドの一部、前記出力用ピンの一部、および前記制御用ピンの一部を覆う封止体と、を有し、
前記出力用ピンは、前記封止体の前記第1辺側に配置され、
前記制御用ピンは、前記封止体の前記第2辺側に配置され、
前記第1および前記第2ダイパッドは、前記出力用ピンと前記制御用ピンとの間に位置し、
前記第1ダイパッドの裏面および側面の第1部分は、前記封止体から露出しており、
前記第2ダイパッドの裏面および側面の第1部分は、前記封止体から露出していることを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記封止体は、前記第1辺および前記第2辺に交差する第3辺を有し、
前記封止体から露出している前記第1ダイパッドの前記側面の前記第1部分は、前記封止体の前記第3辺から露出していることを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記第1ダイパッドの前記側面は、前記第1部分とは異なる第2部分をさらに有し、
前記第2部分は前記封止体で覆われていることを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記封止体から露出している前記第1ダイパッドの前記裏面は、前記半導体装置が実装基板上に実装された際、前記実装基板上の配線と電気的に接続可能な面であることを特徴とする半導体装置。 - 請求項4に記載の半導体装置において、
前記封止体から露出している前記第1ダイパッドの前記裏面は、前記実装基板の前記配線から電源供給が可能な面であることを特徴とする半導体装置。 - 請求項5に記載の半導体装置において、
前記第1半導体チップの裏面にはドレイン電極が形成され、前記第1半導体チップの前記裏面は、前記第1ダイパッドと導電性接着剤を介して電気的に接続されていることを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記封止体は、前記第1辺および前記第2辺に交差する第3辺を有し、
前記封止体から露出している前記第2ダイパッドの前記側面の前記第1部分は、前記封止体の前記第3辺から露出していることを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記第2ダイパッドの前記側面は、前記第1部分とは異なる第2部分をさらに有し、
前記第2部分は前記封止体で覆われていることを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記第1半導体チップの表面にはゲート電極が形成されており、
前記ゲート電極は、ワイヤを介して前記第2半導体チップと電気的に接続されていることを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記第1半導体チップの表面にはソース電極が形成されており、
前記ソース電極は、板状電極を介して前記出力用ピンと電気的に接続されていることを特徴とする半導体装置。 - 請求項10に記載の半導体装置において、
前記第2半導体チップの表面には複数の電極が形成されており、
前記複数の電極はそれぞれ複数のワイヤを介して前記制御用ピンと電気的に接続されていることを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記出力用ピンは、前記封止体の前記第1辺側から突出し、前記制御用ピンは、前記封止体の前記第2辺側から突出していることを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記出力用ピンは、前記封止体の前記第2辺側には配置されておらず、前記制御用ピンは、前記封止体の前記第1辺側には配置されていないことを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記第1および前記第2半導体チップは実質的に矩形形状であって、それぞれの長辺が前記封止体の前記第1および前記第2辺と互いに平行になるように前記第1および前記第2ダイパッド上に搭載されていることを特徴とする半導体装置。 - 請求項1に記載の半導体装置において、
前記第1および前記第2ダイパッドは、前記封止体の前記第1および前記第2辺と平行な方向に分割され、配置されていることを特徴とする半導体装置。
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US20080054422A1 (en) | 2008-03-06 |
US9129979B2 (en) | 2015-09-08 |
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US20120261825A1 (en) | 2012-10-18 |
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