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. 04, 2019
Filed:
Jun. 08, 2016
Byd Company Limited, Shenzhen, CN;
BYD COMPANY LIMITED, Shenzhen, CN;
Abstract
The present disclosure provides a method and an apparatus for adjusting an excitation voltage of a fingerprint detection chip and a fingerprint detection chip. The method for adjusting an excitation voltage of a fingerprint detection chip includes: S, transmitting an excitation signal to the metal ring by the signal transmitting unit, so as to detect a capacitance value of a coupling capacitance formed between the plurality of detection units in the second detection area and the metal ring; or enabling the metal ring grounded, and applying an excitation signal to the plurality of detection units in the second detection area by the signal transmitting unit, so as to detect a capacitance value of a coupling capacitance formed between the plurality of detection units in the second detection area and the metal ring; and S, adjusting an excitation voltage of the first detection area according to the capacitance value of the coupling capacitance formed between the plurality of detection units in the second detection area and the metal ring.