Device substrate, liquid ejection head, and method for manufacturing device substrate and liquid ejection head
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United States of America Patent
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Aug 18, 2015
Grant Date -
Nov 20, 2014
app pub date -
May 13, 2014
filing date -
May 15, 2013
priority date (Note) -
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Abstract
A device substrate includes a substrate body having an energy generating device provided thereon, where the energy generating device generates energy for ejecting liquid, an ejection port forming member disposed on the substrate body, where the ejection port forming member has a pressure chamber that surrounds the energy generating device and an ejection port that communicates with the pressure chamber, and a supply port configured to supply the liquid to the pressure chamber. The ejection port forming member has a first surface that is in contact with the substrate body and a second surface other than the first surface, and the supply port is formed in the second surface.
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