Vertical Alignment Liquid Crystal Display Panel Based on Viewing Angle Compensation Driving Method

Abstract

The embodiment of the invention discloses a vertically orientation type liquid crystal display panel with a view angle compensation. The display panel includes a plurality of scanning lines extending in the row direction, a plurality of data lines extending in the column direction and a plurality of pixel regions, wherein the pixel regions are surrounded through the data lines and the scanning lines which intersect with each other, and each pixel region is provided with a pixel which comprises a pixel electrode; each pixel forms M regions, and M is a positive integer; two adjacent pixels of any row pixel are distinguished as a primary pixel and a sub pixel, and the gray scale of the main pixel is larger than the gray scale of the sub pixel; in each row of pixels, all of the main pixels have the same polarity, all of the sub pixels have the same polarity, and the polarities of the two are alien, wherein the Cpd1 / Ctotal1 of the main pixel is greater than the Cpd2 / Ctotal2 of the sub pixel. The vertically orientation type liquid crystal display panel with the view angle compensation has the advantage of overcoming horizontal crosstalk.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a vertical alignment type liquid crystal display panel based on a viewing angle compensation driving method. Background technique [0002] With the introduction of large-sized liquid crystal display panels, the liquid crystal display panels must have wide viewing angle characteristics to meet the needs of use. Therefore, multi-domain vertical alignment (MVA) liquid crystal display panels with wide viewing angle characteristics have become the mainstream products of large-size flat panel display panels. [0003] An array substrate of a vertical alignment liquid crystal display panel has patterned pixel electrodes, and a color filter substrate (CF substrate) usually includes a plurality of bumps, which are correspondingly arranged at the center of the pixel electrodes. The inversion of the liquid crystal molecules is induced by the fringe electric field effect of the pixe...

AI Technical Summary

Problems solved by technology

Based on such a driving method, when the value of the parasitic capacitance Cpd between the pixel electrode and the adjacent data line (Data line) that does not charge the pixel is small, the coupling effect (Coupling Effect) caused by the signal difference of the data line ) can be ignored, and has no great impact on the display screen. However, in order to further increase the aperture ratio of the pixel, the pixel electrode expands toward the data line, which increases the capacitance value of the parasitic capacitance Cpd. At this time, the coupling effect cannot be ignored. The driving method of high and low gray levels of adjacent pixels will have an impact on the display screen. Figure 1 In the driving mode shown, a large parasitic capacitance Cpd will cause horizontal crosstalk, and the phenomenon is as follows figure 2 shown

[0005] Specifically, the coupling effect caused by the signal difference of the data line can be understood as follows, the voltage change ΔV=︱Vdata-Vcom︱*Cpd / Ctotal, where Vdata is the data line adjacent to the pixel electrode and not charging the pixel Vcom is the voltage on the common electrode, Cpd is the parasitic capacitance between the pixel electrode and the adjacent data line that does not charge the pixel, and Ctotal is the total parasitic capacitance of the pixel electrode. It can be seen that when When Cpd / Ctotal is constant, the value of ΔV depends on the size of Vdata. For the VAC driving method, the voltage change ΔV of high-gray-scale pixels is relatively small, and the voltage change ΔV of low-gray-scale pixels is relatively large. figure 1 In the liquid crystal display panel shown, the polarity of the high-grayscale or low-grayscale pixels on the same horizontal line is the same, so that the voltage variation ΔV of the high- and low-grayscale pixels cannot be completely offset, which leads to the coupling of the overall horizontal adjacent pixels Effects vary, leading to horizontal crosstalk

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