Flow sensor and manufacturing method for the same
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United States of America Patent
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Apr 24, 2018
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app pub date -
Nov 18, 2013
filing date -
Jan 11, 2013
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Abstract
When an exposed part of a semiconductor chip is reduced in size, a tendency of development of a crack on the semiconductor chip is suppressed. A pressure of injection of a resin MR into a second space creates a gap on a contact part SEL where an elastic film LAF and a semiconductor chip CHP1 are in contact, and a resin MR2 different in constituent from the resin MR infiltrates into the gap. As a result, in an area of semiconductor chip CHP1 that is exposed from the resin MR, the resin MR2 is formed in an area other than a flow detecting unit FDU and an area around it. Hence, an area of semiconductor chip CHP1 that is exposed from the resins MR and MR2 can be reduced in size.
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