Patent · US Active

Module architecture for large area ultrasonic fingerprint sensor

US10891458B2 · kind B2 · utility

2Cited by

3References

15Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Jae Hyeong Seo · Pleasanton, US
Kostadin Dimitrov Djordjev · Los Gatos, US
Hrishikesh Vijaykumar Panchawagh · Rochester, US
Sameer Wadhwa · San Diego, US
Nicholas Ian Buchan · San Jose, US
Yipeng Lu · Davis, US

Key dates

Filing date	Feb 28, 2019
Grant date	Jan 12, 2021
Priority date	—
Expiry date	Feb 28, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG01S15/8925
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An ultrasonic fingerprint sensor system of the present disclosure may be provided with an ultrasonic transmitter or ultrasonic transceiver having an electrode layer divided into a plurality of electrode segments. The ultrasonic fingerprint sensor system may detect an object over one or more electrode segments and provide a voltage burst to one or more selected electrode segments for localized generation of ultrasonic waves. The localized generation of ultrasonic waves may facilitate localized readout for imaging. In some implementations, the voltage burst may be provided in a single-ended drive scheme or differential drive scheme.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.