Manufacturing method of head
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United States of America Patent
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app pub date -
Jan 28, 2016
filing date -
Mar 10, 2015
priority date (Note) -
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Abstract
A manufacturing method of a head which includes a channel formation substrate having two piezoelectric actuator rows formed thereon, a driving circuit, and a driving circuit board which is provided with a first bump and a second bump. In the method, a piezo element is formed and the first bump is formed on the outside of the piezoelectric actuator row, on the driving circuit board, an adhesive layer is provided on both sides of the first bump and the second bump, a first through hole and a second through hole are formed on the driving circuit board, a first connection wiring and a second connection wiring which are connected to the driving circuit are formed, and a first electrode of the piezoelectric actuator is electrically connected to the first connection wiring via the first bump and a second electrode is electrically connected to the second connection wiring via the second bump.
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