Array substrate, manufacturing method thereof and display device

Abstract

The embodiment of the invention provides an array substrate, a manufacturing method of the array substrate and a display device, relates to the technical field of display. The number of sensor drivingcircuits per unit area is increased. The array substrate comprises a sensor driving circuit, and the sensor driving circuit comprises a first transistor which comprises a first active layer, a firstgrid electrode connected with a first control signal line, a first source electrode and a first drain electrode; a second transistor which comprises a second active layer, a second grid electrode connected with the first drain electrode, a second source electrode and a second drain electrode; a third transistor which comprises a third active layer, and a third grid electrode, a third source electrode and a third drain electrode which are connected with the second control signal line; wherein the first control signal line, the second control signal line, the first gate and the third gate are positioned on the first film layer; the first source electrode, the second source electrode, the second drain electrode, the third source electrode and the third drain electrode are located on the second film layer, the first drain electrode and the second grid electrode are located on the third film layer, the first film layer, the second film layer and the third film layer are located on differentlayers, and the first drain electrode is connected with the first active layer through a via hole.

Description

【Technical field】 [0001] The present invention relates to the field of display technology, in particular to an array substrate, a manufacturing method thereof, and a display device. 【Background technique】 [0002] With the continuous development of display technology, display devices with fingerprint identification functions are more and more widely used. Such display devices usually include a substrate on which a sensor driving circuit for fingerprint identification is arranged. In the prior art, a single sensor driving circuit occupies a relatively large space, which is not conducive to further increasing the number of sensor driving circuits per unit area, thereby limiting the accuracy of fingerprint identification. 【Content of invention】 [0003] In view of this, embodiments of the present invention provide an array substrate and its manufacturing method, and a display device, which can reduce the space occupied by sensor driving circuits, increase the number of sensor...

AI Technical Summary

Problems solved by technology

In the prior art, a single sensor driving circuit takes up a large space, which is not conducive to further increasing the number of sensor driving circuits per unit area, which in turn limits the accuracy of fingerprint recognition.

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