Liquid crystal display and control method thereof

Abstract

The invention relates to a liquid crystal display and a control method thereof. The liquid crystal display comprises a colour filter panel and an array panel, wherein a storage capacitance electrode wire and a gate line which is connected with a scan drive circuit are formed on the array panel; a common electrode is formed on the colour filter panel or the array panel; and the storage capacitanceelectrode wire is connected with a control circuit which is used for controlling the electric potential of a storage capacitance electrode. When the scan drive circuit applies a square row scanning signal to the gate line and a scanning signal rising edge approaches, the control circuit applies a first voltage to the storage capacitance electrode wire according to a control voltage; and when a row scanning signal falling edge approaches, the control circuit applies a second voltage to the storage capacitance electrode wire according to the control voltage, wherein the first voltage is less than the second voltage. The control method of the invention is applied to the manufacturing of liquid crystal displays.

Description

technical field [0001] The invention relates to display technology, in particular to a liquid crystal display and a control method thereof. Background technique [0002] Thin Film Transistor Liquid Crystal Display (TFT-LCD for short) mainly includes: a color filter panel (Color Filter Panel), an array substrate (Array Panel) and a liquid crystal layer filled between the two substrates. The array substrate mainly includes a plurality of parallel gate lines (gatelines), and data lines (data lines) that are insulated from the gate lines and vertically intersect. The area defined by the gate lines and the data lines is called a pixel (pixel), and each pixel It includes a pixel electrode and a thin film transistor TFT that controls whether the pixel electrode is charged or not. [0003] figure 1 It is an equivalent circuit diagram of a TFT-LCD unit pixel in the prior art. Such as figure 1 As shown, the gate g, source s and drain d of the thin film transistor TFT are respectiv...

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Problems solved by technology

[0010] It can be seen from the formula (1) that in the prior art, the same common electrode voltage is applied to the common electrode of the color filter substrate and the storage capacitor electrode line of the array substrate. At the moment when the TFT is turned from the on state to the off state, the pixel electrode has a jump voltage ΔV P , easy to produce display problems such as flicker (flicker) and image sticking (image sticking), thus affecting the display quality of TFT-LCD

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