Fingerprint recognition device and electronic equipment

Abstract

A fingerprint recognition device and electronic equipment which can improve the success rate of fingerprint recognition are disclosed. The fingerprint recognition device includes: a pixel array, including a plurality of first pixel units and a plurality of second pixel units; a 1 / 4 wave plate, which is arranged above the pixel array; and a first linear polarizer, which is arranged on the 1 / 4 waveplate and the multiple first pixel units, wherein the polarization direction of the first linear polarizer is at an angle of 45 degrees with the fast axis of the 1 / 4 wave plate to block first fingerprint signals in fingerprint light signals reflected or scattered back by the finger above the display; the first fingerprint optical signal is an optical signal directed to a plurality of the first pixel units; the plurality of second pixel units are used to receive a second optical signal, and the second optical signal includes the second fingerprint optical signal in the fingerprint optical signals, the second fingerprint optical signal is an optical signal directed to a plurality of second pixel units; the plurality of first pixel units are used to receive the first screen optical signal passing through the 1 / 4 wave plate and the first linear polarizer, and the first screen light signal is used to correct the second optical signal.

Description

technical field [0001] The present application relates to the technical field of optical fingerprints, and more specifically, to a fingerprint identification device and electronic equipment. Background technique [0002] With the advent of the era of full-screen mobile phones, the application of fingerprint identification devices arranged under or within the screen in terminal equipment such as mobile phones has also been widely developed. In the fingerprint identification process, the fingerprint identification device not only receives the fingerprint light signal with fingerprint information reflected by the finger, but also receives the screen light signal and ambient light signal. The screen structure and other information carried by the screen light signal will affect the fingerprint. The recognition performance, and as the environment changes, the ambient light signal will change, which will also affect the fingerprint recognition performance, thus bringing a bad exper...

AI Technical Summary

Problems solved by technology

In the fingerprint identification process, the fingerprint identification device not only receives the fingerprint light signal with fingerprint information reflected by the finger, but also receives the screen light signal and ambient light signal. The screen structure and other information carried by the screen light signal will affect the fingerprint. The performance of recognition, and as the environment changes, the ambient light signal will change, which will also affect the performance of fingerprint recognition, thus bringing a bad experience to users

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