Ultrasonic sensor, driving method thereof and manufacturing method thereof
US12194495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2021 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Sep 4, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/346
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present disclosure provides an ultrasonic sensor, a method for driving the same, and a method for manufacturing the same. The ultrasonic sensor includes a back plate, a sounding structure on the back plate and a backing layer on a side of the sounding structure distal to the back plate; the sounding structure includes a plurality of emitting electrodes, an opposite electrode, a piezoelectric layer and a plurality of signal leads, and the plurality of emitting electrodes and the opposite electrode are respectively arranged on two sides of the piezoelectric layer; and the plurality of emitting electrodes are arranged in an array, and each of the emitting electrodes is individually coupled to one of the signal leads. The ultrasonic sensor may achieve an independent control for each patterned electrode such that the ultrasonic sensor may be used as a point sound source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.