Line identification module, driving method for line identification module, and display apparatus

Abstract

The invention discloses a line identification module, a driving method for the line identification module, and a display apparatus. A synchronous scanning part is added to an induction surface of a photosensitive device array and can be divided into a first light shading region and a first light transmitting region which are dynamically changed when photosensitive devices perform line identification, wherein the first light transmitting region is at least formed above the photosensitive devices that are performing line identification scanning, so that the photosensitive devices that are performing the line identification scanning can smoothly receive reflected light of a finger through the first light transmitting region. The first light shading region can shade the photosensitive devices that do not need to perform the line identification scanning, so that no light is irradiated to the photosensitive devices and the photosensitive devices can be prevented from generating leak current noises and transmitting the leak current noises to connected data lines. With the scanning of the photosensitive devices, the first light shading region and the first light transmitting region in the synchronous scanning part are synchronously changed, so that a signal-to-noise ratio of signals read out from the data lines can be increased.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a texture recognition module, its driving method and a display device. Background technique [0002] At present, in the existing texture recognition devices such as fingerprint recognition, it is generally adopted such as figure 1 A plurality of photosensitive devices 001 (photo sensors) arranged in an array as shown realize the pattern recognition function, wherein each photosensitive device 001 is connected to the source of a one-to-one corresponding switching transistor 002, and each row of photosensitive devices 001 is Gates of one-to-one corresponding switch transistors 002 are connected to one gate line Gate, and each column of photosensitive devices 001 is connected to one data line Data through one-to-one corresponding drains of switch transistors. When performing pattern recognition, each row of gate lines is loaded with scanning signals row by row. When a row of gate ...

AI Technical Summary

Problems solved by technology

Although the use of the oxide switching transistor 002 to replace the polysilicon switching transistor can theoretically reduce the leakage current noise by nearly 80%, but it cannot completely eliminate the existence of the leakage current noise

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