Biometric feature recognition sensor and electronic equipment comprising same

Abstract

The invention discloses a biometric feature recognition sensor and electronic equipment comprising the same. The sensor comprises a substrate, a conductive circuit and a plurality of lead wires. The conductive circuit is formed on the substrate and comprises a first conductive layer, a second conductive layer and an insulating layer, wherein the first conductive layer comprises a plurality of first electrodes distributed in a mutually-insulated mode, the second conductive layer comprises a plurality of second electrodes distributed in a mutually-insulated mode, the insulating layer is arranged between the first conductive layer and the second conductive layer in a clamped mode, and projections, on the plane where the second electrodes are located, of the first electrodes intersect with the second electrodes. The lead wires comprise at least one first electrode set lead wire and at least one second electrode set lead wire, wherein first electrode sets composed of the first electrodes are connected with the first electrode set lead wires one to one, and second electrode sets composed of the second electrodes are connected with the second electrode set lead wires one to one. The areas of a plurality of overlapping portions formed by the projections, on the plane, of the first electrodes in the first electrode sets and the second electrodes in the second electrode sets are different.

Description

technical field [0001] The present invention relates to biological feature identification technology, in particular to a biological feature identification sensor and electronic equipment containing it. Background technique [0002] Certain biometric features of the human body (such as fingerprints, palm prints, etc.) are unique to the human body, and their complexity provides sufficient features for identification. [0003] Fingerprint / palmprint recognition technology is currently the most mature and cheapest biometric technology. Among them, fingerprint recognition technology is the most widely used, such as access control, notebook computers, mobile phones, automobiles, bank payment and other electronic devices can be applied to fingerprint recognition technology. [0004] The capacitive fingerprint recognition sensor forms a conductive circuit on the base substrate. When the finger is in contact with the sensor, the fingerprint pattern is detected through the different c...

AI Technical Summary

Problems solved by technology

However, the cost of sapphire is high, resulting in an increase in the cost of the entire fingerprint identification device

[0006] Again, the existing fingerprint recognition sensor forms a certain number of sensing units on a limited base substrate. If the number of sensing units is not enough, the resolution of the fingerprint recognition sensor will be reduced, resulting in the inability to accurately perform fingerprint recognition, or requiring the user to Entering fingerprints multiple times degrades user experience

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