US2012279865A1PendingUtilityA1
Touch Fingerprint Sensor Using 1-3 Piezo Composites and Acoustic Impediography Principle
Est. expiryNov 4, 2030(~4.3 yrs left)· nominal 20-yr term from priority
Inventors:Louis RegniereYakub AliyuRainer SchmittTheodore M. JohnsonRonald A. KroppChristian LiautaudDeda DiatezuaIsaac AbothuDe LiufuRichard IrvingPatrick D. BrownWalter C. MickWilliam H. TanubrataOmid S. JahromiJohn BoudreauxDavid ClarkeJack S. ChorpenningBryce M. BarbatoHonorio R. UlepWilliam R. Robinson, Jr.
C25D 5/48C23C 18/54
44
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Abstract
Provided herein is a method of making an integrated circuit device using copper metallization on 1-3 PZT composite. The method includes providing an overlay of electroplated immersion of gold (Au) to cover copper metal traces, the overlay preventing oxidation on 1:3 PZT composite with material. Also included is the formation of immersion Au nickel electrodes on the 1-3 PZT composite to achieve pad metallization for external connections.
Claims
exact text as granted — not AI-modified1 . A method of making an integrated circuit (IC) device using copper metallization on 1-3 PZT composite, comprising: providing an overlay of electroplated immersion gold (Au) to cover copper metal traces, the providing preventing oxidation on the 1:3 PZT composite with material; and forming an immersion of Au nickel electrodes on the 1-3 PZT composite to provide pad metallization for external connections of the IC.
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