Fingerprint recognition display device

Abstract

The invention discloses a fingerprint recognition display device. The display device comprises a light guide plate, a light emitting component and a plurality of photosensitive induction units, wherein the light guide plate is arranged on an emergent light face of a display panel, the light emitting component is capable of emitting modulating light which is transmitted between the light guide plate and a display face of the display device by adopting a manner of total reflection, and the photosensitive induction units are arranged below the light guide plate and arranged in an array manner. When a user touches the display face of the display device with a finger, the fingerprint ridge position contacts the display face to destroy the total reflection transmission of the modulating light at the position, and the modulating light is reflected to the photosensitive induction units below the modulating light, the fingerprint valley position does not contact the display face and cannot affect the total reflection transmission of the modulating light, and the photosensitive induction units below the modulating light cannot receive the modulating light, thus, the detection on fingerprint can be realized by the photosensitive induction units on the basis of photodynamic action, interference with inner part of the display device is not liable to occur, the influence caused by the distance between the photosensitive induction units and the display face of the display device is not liable to occur, and high-quality fingerprint detection can be easily realized.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a fingerprint identification display device. Background technique [0002] With the rapid development of display technology, display panels with a fingerprint recognition function have gradually spread in people's lives. At present, fingerprint recognition display panels generally adopt capacitive structure to realize the function of fingerprint recognition. For example, in-cell fingerprint recognition display The fingerprint identification component is likely to generate parasitic capacitance with the components inside the display panel, so that the fingerprint identification detection signal and the display signal interfere with each other, thereby affecting the quality of fingerprint identification. Contents of the invention [0003] In view of this, an embodiment of the present invention provides a fingerprint identification display device for realizing efficient fingerpr...

AI Technical Summary

Problems solved by technology

At present, fingerprint recognition display panels generally adopt capacitive structure to realize the function of fingerprint recognition. For example, in-cell fingerprint recognition display Fingerprint identification components are easy to generate parasitic capacitance with the components inside the display panel, which makes the fingerprint identification detection signal and display signal interfere with each other, thus affecting the quality of fingerprint identification

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