FINGERPRINT IDENTIFICATION ELEMENT, DISPLAY SCREEN AND DISPLAY DEVICE

摘要

A fingerprint identification element, comprising a plurality of parallel fingerprint detection electrodes (3). The spacing between two adjacent fingerprint detection electrodes (3) is not greater than the spacing between a ridge and a valley which are adjacent in a fingerprint. A fingerprint identification signal is loaded onto one end of each fingerprint detection electrode (3), and a fingerprint identification signal at the other end of each fingerprint detection electrode (3) is acquired in real time. When a user's finger (9) approaches a display screen, since the skin surface of the finger has rugged ridges and valleys, the distances between various points on the skin surface and various fingerprint detection electrodes (3) are different, so that the capacitance values of the fingerprint detection electrodes are affected. By detecting the difference between amplitudes of signals received by all the fingerprint detection electrodes (3) at every moment in the process of the finger (9) touching the display screen, a two-dimensional pattern of a fingerprint can be detected, thereby achieving the fingerprint identification. A display screen, comprising the above-mentioned fingerprint identification element. A display device, comprising the above-mentioned display screen.