Driving method and driving apparatus for display panel

Abstract

The invention relates to a driving method and driving apparatus for a display panel. The driving method includes the steps of driving sub-pixels at corresponding positions in each adjacent two rows ofpixel units by using driving voltages of opposite polarities; driving a plurality of sub-pixels in the same pixel unit by using driving voltages of opposite polarities; and driving the plurality of sub-pixels in the same pixel unit by using driving voltages with at least two voltage levels. With the embodiments of the invention, the Vcom voltage can be protected from the influence of the parasitic capacitance, the correctness of the image signal is therefore ensured, the phenomenon of color shift or image quality abnormality is avoided, and the display quality is enhanced.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a driving method and a driving device of a display panel. Background technique [0002] Due to the deflection angle of liquid crystal molecules or the luminous stability of OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) devices, etc., common display panels usually have a certain degree of color shift. [0003] In order to improve the color shift problem, a common display panel driving method is to apply two different driving voltage signals, high and low, to each adjacent two pixel units, and at the same time, to each adjacent two pixel units The pixels are respectively applied with drive voltages of opposite polarities. In this way, although the problem of color shift can sometimes be improved, it will also cause the positive and negative polarities of the high voltages of the same color sub-pixels in the same column to be mismatched, that is, the nu...

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Problems solved by technology

In this way, although the problem of color shift can sometimes be improved, it will also cause the positive and negative polarities of the high voltages of the same color sub-pixels in the same column to be mismatched, that is, the number of sub-pixels with the same color positive high voltage in the same column is equal to Inconsistent number of sub-pixels with negative polarity high voltage

In this way, due to the influence of parasitic capacitance, when the number of sub-pixels with positive polarity high voltage in the same column and the same color is more than the number of sub-pixels with negative polarity high voltage, the common electrode 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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