Array substrate, manufacturing method thereof, and display device

Abstract

Embodiments of the present invention provide an array substrate, a manufacturing method thereof, and a display device, which relate to the field of display technology and increase the number of sensor driving circuits per unit area. The array substrate includes a sensor driving circuit, including: a first transistor, including a first active layer, a first gate connected to a first control signal line, a first source, and a first drain; a second transistor, including a second an active layer, a second gate connected to the first drain, a second source and a second drain; a third transistor, including a third active layer, a third gate connected to the second control signal line, The third source and the third drain; the first control signal line, the second control signal line, the first gate and the third gate are located in the first film layer, the first source, the second source, the second drain The electrode, the third source electrode and the third drain electrode are located in the second film layer, the first drain electrode and the second gate electrode are located in the third film layer, the first film layer, the second film layer and the third film layer are in different layers, and the first film layer A drain is connected to the first active layer through the 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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