Array substrate, display device, and driving method for display device

Abstract

The embodiment of the invention provides an array substrate, a display device and a driving method for the display device, relates to the technical field of display, and can improve the fingerprint detection precision. The array substrate comprises a plurality of subpixels, and each subpixel comprises a display element. At least one subpixel forms one repetition unit, and one subpixel in the repetition unit also comprises a fingerprint recognition assembly, wherein the fingerprint recognition assembly comprises a fingerprint recognition element and a switching element. The switching element is controlled by a grid line to be started, so as to enable the fingerprint recognition unit to be connected with a reading signal line. The fingerprint recognition element is controlled by a first voltage end to collect fingerprint information, and is controlled by a transfer signal line to store the fingerprint information, so as to enable the fingerprint information to be transmitted to the reading signal line when the fingerprint recognition element is connected with the reading signal line. The display element is controlled by a grid line to be turned on or off, and a data signal is inputted to the display element through a data line when the display element is turned on. The array substrate is used for the display device with a function of fingerprint recognition.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an array substrate, a display device and a driving method thereof. Background technique [0002] Fingerprint is an innate, unique, fixed, and distinguishable identification feature of the human body, the most important of which is the feature of valleys and ridges. Fingerprint identification technology has the advantages of high precision, fast speed, low price, and high user acceptance, and has been widely used in the field of personal identity verification. [0003] At present, how to implement fingerprint recognition in the display area of ​​the display device is gradually being concerned, such as figure 1 Shown is a display device with a fingerprint recognition function, wherein the fingerprint recognition sensor is integrated in a sub-pixel of the display device. [0004] Specifically, each fingerprint sensor is composed of a photodiode L and a thin film transisto...

AI Technical Summary

Problems solved by technology

[0006] However, since the exposure (the process of generating current by the photosensitive diode L) and the reading are carried out simultaneously in the prior art, that is, the gate line GL is opened once, and both the exposure and the reading must be completed, so that the time spent in each frame is relatively short. However, during the long-term exposure reading process, the finger is likely to move slightly, which will affect the accuracy of the read fingerprint, and then affect the detection accuracy, resulting in detection failure.

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