Capacitance recognition device for fingerprint identification and fingerprint identification device therewith
DE602014092050T2Active Publication Date: 2025-06-18BYD SEMICON CO LTD
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Patent Information
- Application Number
- DE602014092050
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2013-12-27
- Filing Date
- 2014-12-26
- Publication Date
- 2025-06-18
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Technical Problem
Existing fingerprint detection technologies face challenges in accuracy due to parasitic capacitances, which affect the detection of fingerprint characteristics and introduce noise in the circuit.
Method used
A capacitance detecting device for fingerprint identification is designed with a detecting module that charges and measures the sensing capacitance and feedback capacitance, while keeping parasitic capacitances at a fixed potential, thereby eliminating their impact on the detection process.
Benefits of technology
The solution significantly enhances the accuracy of fingerprint detection, reduces circuit noise, and decreases power consumption and circuit area, leading to a more efficient fingerprint identification process.
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