JP7087325B2 - 電子デバイス - Google Patents
電子デバイス Download PDFInfo
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- JP7087325B2 JP7087325B2 JP2017192154A JP2017192154A JP7087325B2 JP 7087325 B2 JP7087325 B2 JP 7087325B2 JP 2017192154 A JP2017192154 A JP 2017192154A JP 2017192154 A JP2017192154 A JP 2017192154A JP 7087325 B2 JP7087325 B2 JP 7087325B2
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Description
Claims (9)
- 第1面と前記第1面とは反対側の第2面とを有する第1基板と、
前記第1面に対向する第2基板と、
前記第2基板に設けられ、前記第1基板の厚み方向と直交する第1方向に並ぶ複数の駆動素子と、
前記第1面に形成され、前記第1方向に延びる第1配線と、
前記第2面に形成され、前記第1方向に延びるとともに第1外部端子と接続された第2配線と、
前記第1基板を前記厚み方向に貫通し、前記第1配線と前記第2配線とを接続する貫通配線部と、
前記第1配線と前記複数の駆動素子のそれぞれとを接続する第1バンプ部と、
前記第2配線に接続された第2バンプ部と、を備え、
前記貫通配線部によって提供される前記第1配線と前記第2配線とを接続する電路の電気抵抗は、前記第2バンプ部によって提供される前記第2配線に接続された電路の電気抵抗よりも小さく、
前記貫通配線部の前記厚み方向に直交する断面の面積は、前記第2配線と前記第2バンプ部との電気的接触面の面積よりも大きいことを特徴とする電子デバイス。 - 前記貫通配線部は、単一の貫通配線であり、
前記貫通配線は、前記第1基板を前記厚み方向に貫通するとともに前記第1方向に延びていることを特徴とする請求項1に記載の電子デバイス。 - 前記貫通配線部は、複数の貫通配線を有し、
前記複数の貫通配線は、前記第1基板を前記厚み方向に貫通するとともに前記第1配線と前記第2配線とを接続し、前記第1方向に並んでいることを特徴とする請求項1に記載の電子デバイス。 - 駆動信号を前記駆動素子に出力するための第3バンプ部をさらに備え、
前記第2バンプ部は、複数の接続バンプを有し、
前記第2バンプ部の前記複数の接続バンプは、前記第2配線に接続されるとともに前記第1方向に並んでいることを特徴とする請求項3に記載の電子デバイス。 - 前記第3バンプ部は、複数の接続バンプを有し、
前記第3バンプ部の前記複数の接続バンプは、前記第1方向に並び、
前記第2バンプ部の前記複数の接続バンプの数は、前記第3バンプ部の前記複数の接続バンプの数以上であることを特徴とする請求項4項に記載の電子デバイス。 - 前記第2面に形成され、前記第1方向に延びるとともに第2外部端子と接続された第3配線と、
前記第3配線に接続された第4バンプ部と、をさらに備え、
前記第2バンプ部は、複数の接続バンプを有し、
前記第2バンプ部の前記複数の接続バンプは、前記第2配線に接続されるとともに前記第1方向に並んでいることを特徴とする請求項3に記載の電子デバイス。 - 前記第4バンプ部は、複数の接続バンプを有し、
前記第4バンプ部の前記複数の接続バンプは、前記第3配線に接続されるとともに前記第1方向に並び、
前記第2バンプ部の前記複数の接続バンプの数は、前記第4バンプ部の前記複数の接続バンプの数以上であることを特徴とする請求項6に記載の電子デバイス。 - 前記第2バンプ部は、複数の接続バンプを有し、
前記第2バンプ部の前記複数の接続バンプは、前記第2配線に接続されるとともに前記第1方向に並び、
前記第2バンプ部の前記複数の接続バンプのそれぞれは、前記第1基板に向けて突出する樹脂製のコア部と、前記第2配線に接続されるとともに前記コア部を覆う導電性の被覆部と、を有していることを特徴とする請求項3に記載の電子デバイス。 - 前記第2バンプ部は、前記第1方向に延びる樹脂製の複数のコア接続部を有し、
前記第1方向において互いに隣合う2つの前記コア部は、前記コア接続部によって互いに一体に形成されていることを特徴する請求項8に記載の電子デバイス。
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