Ultrasonic fingerprint sensor with flexible substrate

An ultrasonic fingerprint sensor system of the present disclosure may be provided with a flexible substrate. The ultrasonic fingerprint sensor system may include a film stack disposed on the flexible substrate that provides acceptable acoustic coupling for fingerprint sensing. The ultrasonic fingerp...

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Bibliographic Details
Main Authors LU, YIPENG, DJORDJEV, KOSTADIN DIMITROV, KAO, TSONGMING, SEO, JAE HYEONG, BUCHAN, NICHOLAS IAN, PANCHAWAGH, HRISHIKESH VIJAYKUMAR, TSENG, CHIN-JEN
Format Patent
LanguageChinese
English
Published 11.02.2024
Subjects
ACOUSTICS
ACOUSTICS NOT OTHERWISE PROVIDED FOR
CALCULATING
CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL
MUSICAL INSTRUMENTS
PHYSICS
PRINTED CIRCUITS
SOUND-PRODUCING DEVICES
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Summary:An ultrasonic fingerprint sensor system of the present disclosure may be provided with a flexible substrate. The ultrasonic fingerprint sensor system may include a film stack disposed on the flexible substrate that provides acceptable acoustic coupling for fingerprint sensing. The ultrasonic fingerprint sensor system includes a high acoustic impedance layer in an acoustic path of ultrasonic waves through a display. The high acoustic impedance layer can be electrically conductive or electrically nonconductive. In some implementations, the ultrasonic fingerprint sensor system includes an ultrasonic transceiver or an ultrasonic transmitter separate from an ultrasonic receiver.
Bibliography:Application Number: TW20198135992