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:
Jun. 13, 2017
Filed:
Jun. 24, 2016
Byd Company Limited, Shenzhen, CN;
BYD Company Limited, Shenzhen, CN;
Abstract
A capacitance detecting device for fingerprint identification and a fingerprint identification apparatus are provided. The device includes a conductive border; a detecting screen, comprising: a plurality of detecting units, in which each detecting unit includes: a first conductive layer, a second conductive layer, a third conductive layer and a fourth conductive layer; a detecting module, configured to charge a sensing capacitance between the first conductive layer and a finger in contact with the detecting screen and a feedback capacitance between the first conductive layer and the second conductive layer at a sampling stage, to control electric charges of the sensing capacitance and the feedback capacitance to transfer to an integrating capacitance between the third conductive layer and the fourth conductive layer at an integral stage, to measure a voltage variation of the integrating capacitance at the integral stage and to calculate the sensing capacitance according to the voltage variation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile