Driving method and driving device for display panel, as well as display device

Abstract

The invention relates to a driving method and driving device for a display panel, as well as a display device of a display panel. The driving method comprises the following steps: dividing a pluralityof pixel units of the display panel into a plurality of pixel groups, wherein each pixel group comprises three rows of continuously arranged pixel units; respectively exerting a driving voltage witha polarity opposite to that of a first position pixel unit to a second position pixel unit and a third position pixel unit in a same pixel group, and respectively exerting driving voltages with opposite polarities to every two adjacent rows of sub-pixels in a same row of the pixel unit, and respectively exerting driving voltages of different voltage grades to sub-pixels in a first pixel unit and sub-pixels in a second pixel unit, wherein the first pixel unit and the second pixel unit are in adjacent positions in the display panel. By adopting the embodiment of the invention, a Vcom voltage isprevented from influence of stray capacitance, so that accuracy of an image signal is ensured, and phenomena of color deviation or image abnormity are avoided.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a driving method, a driving device and a display device of a display panel. Background technique [0002] In a traditional vertical alignment (Vertical Alignment, VA) liquid crystal display device, when displaying a picture, since the liquid crystal molecules maintain a certain deflection angle, the transmittance of light at different viewing angles is different, resulting in confusion when the user views the picture at different viewing angles. There is a color shift phenomenon in which the color of the screen is different. [0003] In order to improve the color shift problem, the current general practice is to divide the pixel electrode of the RGB sub-pixel in each pixel unit into two independent pixel electrodes, and apply different driving voltages to the two pixel electrodes to improve the color shift problem. In this method, due to the increase in the number of pi...

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Problems solved by technology

In this way, the positive and negative polarities of the high voltages of the subpixels in the same column will not match, that is, the number of subpixels with positive high voltages in the same column is inconsistent with the number of subpixels with negative high voltages

In this way, due to the influence of parasitic capacitance, when the number of sub-pixels with positive polarity high voltage is more than the number of sub-pixels with negative polarity high voltage in the same column, the common voltage V com The equivalent voltage compared to the original V com The increase will lead to a decrease in the actual charging charge and brightness of the sub-pixels with positive polarity and high voltage. On the contrary, it will increase the actual charging charge and brightness of the negative polarity high-voltage sub-pixels, which will affect the display color and image quality, resulting in abnormal image quality output. The problem

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