Display device and fingerprint identification method

Abstract

The invention discloses a display device and a fingerprint identification method, wherein each fingerprint identification unit comprises at least two photosensitive areas for receiving light of different colors, and the color of the light received by one photosensitive area corresponds to the light emitting color of a light emitting sub-pixel of one color. When fingerprint identification is carried out, the light-emitting sub-pixels with the same color as the light received by each photosensitive area can be controlled to be lightened, so that the photosensitive area with one color correspondingly receives the light reflected by a finger once and generates an electric signal once. One fingerprint identification unit is provided with N photosensitive areas, so that one fingerprint identification unit can receive light reflected by N fingers, and N electric signals can be generated. In this way, under the condition of not additionally adding a fingerprint identification unit, only one fingerprint identification unit is arranged, the effect of N times of the fingerprint identification unit can be achieved, the PPI of fingerprint identification can be improved, and then the fingerprintidentification precision is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display device and a fingerprint identification method. Background technique [0002] Fingerprint identification technology has been widely used in smart phones, time attendance machines, security access control, and port customs clearance. Generally, a fingerprint sensor is used to receive light reflected from a finger and convert the light into an electrical signal. Therefore, the fingerprint information of the finger can be determined according to the converted electrical signal. However, due to the limitation of process conditions, the size of the fingerprint sensor is limited to a certain extent, so that the number of fingerprint sensors per unit area cannot be further increased, which is not conducive to the realization of high-resolution fingerprint recognition function, and is not conducive to improving the fingerprint recognition obtained. of fineness. Contents of...

AI Technical Summary

Problems solved by technology

However, due to the limitation of process conditions, the size of the fingerprint sensor is limited to a certain extent, so that the number of fingerprint sensors per unit area cannot be further increased, which is not conducive to the realization of high-resolution fingerprint recognition function, and is not conducive to improving the fingerprint recognition obtained. fineness of

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