Array substrate, display panel and display device

Abstract

The invention discloses an array substrate, a display panel and a display device. The array substrate comprises a plurality of data lines, a plurality of gate lines, a plurality of pixel electrodes and a plurality of TFTs, wherein a display area is divided by the data lines and the gate lines into a plurality of display subareas, the pixel electrodes are arranged in the display subareas, the TFTs are arranged in the display subareas, source electrodes of the TFTs are electrically connected with the data lines, drain electrodes of the TFTs are electrically connected with the pixel electrodes, and gate electrodes of the TFTs are electrically connected with the gate lines; and a parasitic capacitor is formed between the gate electrodes and the drain electrodes of the TFTs. The array substrate also comprises a switching circuit used for connecting two ends of the parasitic capacitor when drive signals of the gate electrodes of the TFTs are converted from a high level to a low level. Impact of the parasitic capacitor between the gate electrodes and the drain electrodes on the pixel electrodes can be reduced, and display effects can be improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an array substrate, a display panel and a display device. Background technique [0002] The display device based on liquid crystal is a kind of flat display widely used at present. Compared with other display methods, it has the advantages of low power consumption, light weight, and no radiation. [0003] A liquid crystal-based display device generally includes an array substrate, a color filter substrate, and a liquid crystal layer. Such as figure 1 As shown, the display area on the array substrate includes multiple sub-display areas, and each sub-display area is generally formed by crossing and surrounding two gate lines 101 (scanning lines) and two data lines 102 . [0004] Such as figure 1 As shown, a thin film transistor 103 and a pixel electrode 104 are disposed inside the sub-display region. By controlling the voltage applied to the common electrode and / or the...

AI Technical Summary

Problems solved by technology

[0007] at the gate turn-on voltage from V gh changes to the shutdown voltage V gl At the moment, due to the sudden change of the voltage on the gate, the parasitic capacitance C gd The internal charge moves, and once the charge moves it will cause C gd The voltage at both ends changes, and this voltage change will be conducted from the drain to the pixel electrode 104, causing the electric field strength between the color filter substrate and the array substrate to change, and the electric field strength between the color filter substrate and the array substrate to change It will also cause the deflection angle of the liquid crystal molecules to change, thereby affecting the transmittance, resulting in inaccurate grayscale display of the image

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