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:
Jul. 30, 2019
Filed:
Sep. 04, 2017
Shenzhen Goodix Technology Co., Ltd., Shenzhen, CN;
Mengwen Zhang, Shenzhen, CN;
Chang Zhan, Shenzhen, CN;
Tao Pi, Shenzhen, CN;
Birong Lin, Shenzhen, CN;
Shenzhen Goodix Technology Co., Ltd., Shenzhen, CN;
Abstract
Embodiments of the present disclosure provide a capacitive fingerprint sensor. The capacitive fingerprint sensor includes: a first electrode plate layer, a second electrode plate layer and a third electrode plate layer that are sequentially arranged. The first electrode plate layer forms a fingerprint capacitor with a finger, at least one fourth electrode plate layer is arranged between the first electrode plate layer and the second electrode plate layer, a first parasitic capacitor is formed between the first electrode plate layer and the fourth electrode plate layer, and a second parasitic capacitor is formed between the second electrode plate layer and the fourth electrode plate layer; and the capacitive fingerprint sensor further comprises an integrator having an integrating capacitor, and the integrating capacitor is formed between the second electrode plate layer and the third electrode plate layer.