JPWO2019087327A1 - 半導体装置及びその製造方法、並びに自動車 - Google Patents
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Abstract
Description
(構成)
図1は、この発明の実施の形態1である半導体装置の断面構造を模式的に示す断面図である。図2は実施の形態1の半導体装置の平面構造を模式的に示す平面図であり、図2のA−A断面が図1となる。図1及び図2にはそれぞれXYZ直交座標系が示されている。なお、図2において、説明の都合上、後述する樹脂被覆部7の図示を省略している。
以下、図1及び図2を参照して、実施の形態1の半導体装置の製造方法について説明する。
実施の形態1の半導体装置におけるネジ4は、上方にネジ部41、下方にヘッド部42を有する態様で、ネジ部41がフレーム貫通孔32を貫通し、ベース板1と反対側に向けて+Z方向に突出する態様で設けられているため、ネジ部41に外部端子の貫通孔を貫通させた後、ナットで締め付けるネジ止め処理により、ケース2外において外部端子とフレーム3との電気的接続を図ることができる。
(構成)
図3は、この発明の実施の形態2である半導体装置の断面構造を模式的に示す断面図である。図3にはXYZ直交座標系が示されている。
図4〜図8は、実施の形態2の半導体装置の製造方法を示す断面図である。図4〜図8にはそれぞれXYZ直交座標系が示されている。以下、図4〜図8を参照して、実施の形態2の半導体装置の製造方法について説明する。
実施の形態2の半導体装置におけるネジ4は、実施の形態1と同様、ネジ部41がフレーム貫通孔32を貫通し、ベース板1と反対側に向けて+Z方向に突出する態様で設けられているため、実施の形態2の半導体装置のインダクタンスを最小限に抑えることができる効果を奏する。
(構成)
図9は、この発明の実施の形態3である半導体装置の断面構造を模式的に示す断面図である。図9にはXYZ直交座標系が示されている。
図10〜図12は、実施の形態3の半導体装置の製造方法を示す断面図である。図10〜図12にはそれぞれXYZ直交座標系が示されている。以下、図10〜図12を参照して、実施の形態3の半導体装置の製造方法について説明する。
実施の形態3の半導体装置におけるネジ4は、実施の形態1及び実施の形態2と同様、ネジ部41がフレーム貫通孔32を貫通し、ベース板1と反対側に向けて+Z方向に突出する態様で設けられているため、実施の形態3の半導体装置のインダクタンスを最小限に抑えることができる効果を奏する。
図13は実施の形態1〜実施の形態3の半導体装置を用いた自動車の応用例を模式的に示す説明図である。
Claims (8)
- ベース板(1)と、
前記ベース板上に設けられる絶縁基板(10)と、
前記絶縁基板上に設けられる回路パターン(11)と、
前記回路パターン上に設けられる半導体素子(5)と、
前記半導体素子上に設けられ、前記半導体素子に電気的に接続されるフレーム(3)と、
収容領域(R2)内における前記絶縁基板、前記回路パターン、前記半導体素子、及び前記フレームを取り囲んで前記ベース板上に設けられ、絶縁性を有するケース(2,2B)とを備え、
前記フレームは、前記収容領域内に設けられるフレーム本体部(30)と、前記フレーム本体部から前記収容領域外に延在して前記ケース上に露出した状態で設けられるフレーム露出部(31)とを含み、前記フレーム露出部はフレーム貫通孔(32)を有し、
ヘッド部(42)が前記ケースによって被覆され、ネジ部(41)が前記フレーム露出部の前記フレーム貫通孔を貫通し、前記ベース板と反対側に向けて突出する態様で設けられるネジ(4)をさらに備えることを特徴する、
半導体装置。 - 請求項1記載の半導体装置であって、
前記ネジにおいて、
前記ヘッド部は平面視して前記フレーム露出部に完全重複し、
前記ヘッド部は平面視して長方形を呈し、前記フレーム露出部の前記フレーム本体部からの延在方向であるフレーム長方向が短辺となり、前記フレーム長方向と直交するフレーム幅方向が長辺となる、
半導体装置。 - 請求項1または請求項2記載の半導体装置であって、
前記ネジの前記ヘッド部は、前記ヘッド部と前記ベース板との間に前記ケースの一部が存在する態様で、前記ケース内に埋め込まれる、
半導体装置。 - 請求項1または請求項2記載の半導体装置であって、
前記収容領域における前記絶縁基板、前記回路パターン、前記半導体素子、及び前記フレームを被覆する収容領域被覆部(7)をさらに備え、
前記ネジの前記ヘッド部は表面が露出する態様で前記ケースによって被覆され、
前記ネジの前記ヘッド部の表面は前記収容領域被覆部によって被覆される、
半導体装置。 - ベース板(1)と、
前記ベース板上に設けられる絶縁基板(10)と、
前記絶縁基板上に設けられる第1及び第2の回路パターン(11,12)と、
前記第1の回路パターン上に設けられる半導体素子(5)と、
前記半導体素子及び前記第2の回路パターン上に設けられ、前記半導体素子及び前記第2の回路パターンに電気的に接続されるフレーム(3C)と、
収容領域(R2C)内における前記絶縁基板、前記第1及び第2の回路パターン、前記半導体素子、並びに前記フレームを取り囲んで前記ベース板上に設けられるケース(2C)とを備え、
前記フレームは、前記収容領域内に設けられるフレーム本体部(30)と、前記フレーム本体部から前記収容領域外に延在して前記ケース上に露出した状態で設けられるフレーム露出部(31)と、前記フレーム露出部からさらに延在し、先端部分が屈曲されて前記フレーム露出部の延在方向と反対方向に延びるフレーム曲げ部(33)とを含み、前記フレーム露出部はフレーム貫通孔(32)を有し、前記フレーム曲げ部が前記第2の回路パターンと接続され、
ヘッド部(42)が前記ケースによって被覆され、ネジ部(41)が前記フレーム貫通孔を貫通し、前記ベース板と反対側に向けて突出する態様で設けられるネジ(4)をさらに備え、前記ネジは前記ヘッド部の表面の下方から前記フレーム曲げ部によって支持されることを特徴とする、
半導体装置。 - 請求項1から請求項5のうち、いずれか1項に記載の半導体装置であって、
前記半導体素子は炭素を主とする化合物を主要構成材料としていることを特徴とする、
半導体装置。 - 請求項4記載の半導体装置の製造方法であって、
(a) 前記ベース板上において、前記絶縁基板、前記回路パターン及び前記半導体素子を一体化して基本構造を得るステップと、
(b) 前記フレームと前記ケースとを一体化するステップと、
(c) 前記フレーム貫通孔に前記ネジ部を挿入し、表面を露出させる態様で前記ヘッド部を前記ケースに設けたケース貫通部(K2)に収容した後、ナット(14)で前記ネジ部を締結することにより、前記ケースと前記ネジとを仮固定するステップと、
(d) 前記ケースを前記ベース板上に固定し、前記ケースによって前記収容領域内の前記基本構造と前記フレームの前記フレーム本体部とを取り囲むステップと、
(e) 前記半導体素子と前記フレームとを電気的に接続するステップと、
(f) 封止材によって前記ケースの収容領域内における前記基本構造及び前記フレーム本体部を被覆する前記収容領域被覆部を形成するステップとを備え、前記収容領域被覆部は前記ヘッド部の露出した表面をさらに被覆し、
(g) 前記ナットを前記ネジ部から取り外すステップをさらに備える、
半導体装置の製造方法。 - 動力用モータ(21)と、
前記動力用モータ用の電源(22)とを備え、
前記電源はインバータ回路装置(23)を内部に有し、前記インバータ回路装置は請求項1から請求項6のうち、いずれか1項記載の半導体装置を含む、
自動車。
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