Data line driving method and unit, source electrode driver, panel driving apparatus and display apparatus

Abstract

The invention discloses a data line driving method and a driving unit, a source electrode driver, a panel driving apparatus and a display apparatus. Power consumption generated because of charging and discharging of a parasitic capacitor on data line can be reduced. The data line driving method comprises the following steps: determining whether it is in blank time between two frames; if it is the blank time, outputting a preset voltage signal to a data line; if it is not the blank time, outputting a gray-scale voltage signal to the data line.

Description

technical field [0001] The invention relates to the display field, in particular to a data line driving method and unit, a source driver, a panel driving device and a display device. Background technique [0002] Due to the advantages of zero radiation, low power consumption, small heat dissipation, small size, accurate image restoration, and sharp character display, liquid crystal displays have become mainstream products in the display field. [0003] The display process of the liquid crystal display is as follows: the source driver chip (Source IC) first provides the data line with a grayscale voltage corresponding to the brightness (that is, the GAMMA voltage), and then the scan line provides an on-state voltage to turn on the thin film transistor (Thin Film Transistor, TFT) switch, the voltage on the corresponding data line is loaded to the pixel electrode through the data line and the TFT switch, and charges the liquid crystal capacitor Cps to form a gray scale, thereby...

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Problems solved by technology

But at the same time, since there are many parasitic capacitances on the entire data line, these capacitances (such as figure 1 Cx in 1 、Cx 2 、Cd 0 、Cp d etc.), one end of the electrode is connected to the data line, so when the data line charges and discharges the liquid crystal capacitance Cps, it also charges and discharges these parasitic capacitances, resulting in unnecessary power consumption

[0004] Moreover, at present, the dielectric anisotropy and optical anisotropy of liquid crystal molecules are used to obtain different display gray scales. In order to avoid liquid crystal molecules being solidified under a certain voltage for a long time, an AC drive method is adopted to maintain the characteristics of liquid crystal molecules. However, the AC driving method means that the voltage of the data line is constantly changing, which also causes the above-mentioned parasitic capacitance to be in a state of continuous charging and discharging, forming a leakage current on the data line, increasing the load on the source driver chip, and increasing power consumption.

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