The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2024
Filed:
Mar. 09, 2021
Ningbo Semiconductor International Corporation, Ningbo, CN;
NINGBO SEMICONDUCTOR INTERNATIONAL CORPORATION, Ningbo, CN;
Abstract
Fingerprint identification modules, methods for forming the fingerprint identification modules and electronic devices are provided. The method may include providing a substrate, containing a signal process circuit formed therein; providing a carrier substrate; forming one or more piezoelectric transducers on the carrier substrate, wherein a piezoelectric transducer of the one or more piezoelectric transducers includes a first electrode, a piezoelectric layer on the first electrode and a second electrode on the piezoelectric layer; forming a permanent bonding layer, containing one or more cavities, on one of the carrier substrate and the substrate; bonding the carrier substrate with the substrate using the permanent bonding layer, wherein the permanent bonding layer is between the one or more piezoelectric transducers and the substrate, and each piezoelectric transducer covers one cavity; and removing the carrier substrate.