Line recognition module, line recognition device and display device

Abstract

The invention discloses a line recognition module, a line recognition device and a display device, and aims to provide a line recognition module based on a total reflection principle and increase application scenes of the line recognition module. The embodiment of the invention provides a line recognition module. The line recognition module comprises a light source, a light guide layer, an opticalsensor layer and a light-transmitting cover plate, wherein the light guide layer, the optical sensor layer and the light-transmitting cover plate are stacked in sequence. Wherein the light guide layer is provided with a first surface facing the optical sensor layer, a second surface deviating from the optical sensor layer, and a side surface connecting the first surface and the second surface; the light source is positioned on the side surface; and on one side, deviating from the optical sensor layer, of the light-transmitting cover plate, the refractive index n0 of the medium adjacent to thelight-transmitting cover plate is smaller than the refractive index n1 of the light-transmitting cover plate.

Description

technical field [0001] The present application relates to the technical field of texture recognition, in particular to a texture recognition module, a texture recognition device and a display device. Background technique [0002] In recent years, the application fields and identification methods of fingerprints have become more and more extensive. At present, there are many schemes for identifying fingerprints. The size of the fingerprint identification module is limited by the size of the prism, resulting in a large size of the entire fingerprint identification module, and its application field is greatly limited. However, the use of optical fibers and other imaging structures to identify fingerprints has reduced the thickness of the fingerprint module. , but its cost becomes very large. To sum up, the application scenarios of the fingerprint identification module provided by the prior art are limited. Contents of the invention [0003] The embodiment of the present app...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the application fields and identification methods of fingerprints have become more and more extensive. At present, there are many schemes for identifying fingerprints. The size of the fingerprint identification module is limited by the size of the prism, resulting in a large size of the entire fingerprint identification module, and its application field is greatly limited. However, the use of optical fibers and other imaging structures to identify fingerprints has reduced the thickness of the fingerprint module. , but its cost becomes large

In summary, the application scenarios of fingerprint identification modules provided by the existing technology are limited

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