JP2016165847A - 液体噴射ヘッド、及び液体噴射ヘッドの製造方法 - Google Patents
液体噴射ヘッド、及び液体噴射ヘッドの製造方法 Download PDFInfo
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Abstract
【解決手段】圧電素子32を複数備えた圧力室形成基板29が第1の面41に接続され、圧電素子32を駆動する信号を出力する駆動IC34が第1の面41とは反対側の第2の面42に設けられた封止板33を備え、封止板33の第2の面42には、圧電素子32に電力を供給する電源配線53が形成され、電源配線53の少なくとも一部は、封止板33内に埋設され、表面が第2の面側42に露出している。
【選択図】図2
Description
前記配線基板の前記第2の面には、前記駆動素子に電力を供給する配線が形成され、
前記配線の少なくとも一部は、前記配線基板内に埋設され、表面が前記第2の面側に露出していることを特徴とする。
前記配線は、前記第1の方向に延設され、前記複数のバンプ電極と接続されることが望ましい。
前記配線基板の前記第2の面に板厚方向に凹んだ凹部と、前記配線基板を貫通させた貫通孔とを形成する配線基板加工工程と、
前記凹部内に導電材料を埋め込んだ前記配線と、前記貫通孔内に導電材料を埋め込んだ前記貫通配線とを形成する配線形成工程と、を含むことを特徴とする。
Claims (6)
- 駆動素子を複数備えた駆動素子形成基板が第1の面に接続され、前記駆動素子を駆動する信号を出力する駆動ICが前記第1の面とは反対側の第2の面に設けられた配線基板を備え、
前記配線基板の前記第2の面には、前記駆動素子に電力を供給する配線が形成され、
前記配線の少なくとも一部は、前記配線基板内に埋設され、表面が前記第2の面側に露出していることを特徴とする液体噴射ヘッド。 - 前記配線は、前記配線基板内に埋設された導電材料からなる埋設配線と、当該埋設配線の前記第2の面側を被覆する前記導電材料とは異なる導電材料からなる表層配線と、を備えたことを特徴とする請求項1に記載の液体噴射ヘッド。
- 前記駆動ICは、前記駆動素子を個別に駆動する信号を生成する回路ブロックと、前記回路ブロックに接続されるバンプ電極とを、第1の方向に複数備え、
前記配線は、前記第1の方向に延設され、前記複数のバンプ電極と接続されたことを特徴とする請求項1又は請求項2に記載の液体噴射ヘッド。 - 駆動素子を複数備えた駆動素子形成基板が第1の面に接続され、前記駆動素子を駆動する信号を出力する駆動ICが前記第1の面とは反対側の第2の面に設けられ、前記第2の面において前記駆動素子に電力を供給する配線と、前記第1の面と前記第2の面との間を中継する貫通配線と、が形成された配線基板を備えた液体噴射ヘッドの製造方法であって、
前記配線基板の前記第2の面に板厚方向に凹んだ凹部と、前記配線基板を貫通させた貫通孔とを形成する配線基板加工工程と、
前記凹部内に導電材料を埋め込んだ前記配線と、前記貫通孔内に導電材料を埋め込んだ前記貫通配線とを形成する配線形成工程と、を含むことを特徴とする液体噴射ヘッドの製造方法。 - 前記配線形成工程は、電界めっき法により前記凹部内及び前記貫通孔内に導電材料を形成することを特徴とする請求項4に記載の液体噴射ヘッドの製造方法。
- 前記配線基板内に埋設された前記配線の前記第2の面側を前記導電材料とは異なる導電材料で被覆する表層配線形成工程を含むことを特徴とする請求項4又は請求項5に記載の液体噴射ヘッドの製造方法。
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