A driving method, device and display device of a display device

Abstract

The present invention provides a driving method, a device and a display device for a display device, which relate to the field of display technology and are used to avoid or improve the bad phenomenon of vertical stripes. The method includes: inputting a gate driving signal to each gate line step by step, The gate drive signal is input to one gate line in one scan period; the data signal is input to each data line in each scan period, and the polarity of the data signal input to the same data line is reversed once every n scan periods; in each scan period Input the threshold voltage of the preset time length to the threshold voltage line in the cycle, if the polarity of the data signal is reversed during the scanning period, input the threshold voltage of the first time length, otherwise input the threshold voltage of the second time length; When the threshold voltage is input to the line, the data signal input to the data line is latched, otherwise it is output; the second time length is greater than the first time length. The present invention is used in the manufacture of displays.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a driving method and device for a display device and a display device. Background technique [0002] At present, a thin film transistor liquid crystal display (English full name: Thin Film Transistor, abbreviation: TFT-LCD) has become a mainstream display. The application of the integrated gate drive circuit (full name in English: Gate-driver On Array, GOA for short) in TFT-LCD makes TFT-LCD have a qualitative leap. [0003] With the continuous advancement of display technology, people have put forward higher requirements for display devices. In order to meet market demand, further increase the aperture ratio of display devices and reduce the production cost of display devices, the prior art proposes a liquid crystal display panel. Dual Gate (Dual Gate) design, but when the existing GOA technology is applied to the dual gate design of the LCD panel, the process of scann...

AI Technical Summary

Problems solved by technology

Same as the traditional liquid crystal display, in order to avoid using positive or negative voltage to drive the liquid crystal molecules all the time, causing damage to the liquid crystal molecules, the data line uses positive and negative voltages to drive the liquid crystal molecules alternately, that is, n scan cycles are output to the same data line The polarity of the data on the cable is reversed once, but when the polarity of the data signal is reversed, the source drive circuit needs a rising delay time (English: Rising Time) to output the data signal, so when the polarity of the data line signal is reversed, the data written The data writing time of the pixel unit will be shorter than the data writing time of the pixel unit without data line signal polarity inversion, which will cause the pixel units of some columns to be charged more, and the pixel units of some columns will be charged more. Less charging, so that there will be uneven brightness of the pixel unit, and then there will be bad vertical stripes

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