Driving circuit and driving method of display panel and display device

Abstract

The invention discloses a driving circuit and a driving method of a display panel and a display device. The driving method of the display panel comprises the following steps: firstly, determining a compensated gray grade value corresponding to each pixel in pixels of a current line; then, loading a gray grade signal corresponding to the compensated gray grade value into each pixel in the pixels of the current line according to the determined compensated gray grade value corresponding to each pixel in the pixels of the current line; and carrying out gray grade compensation with different degrees on the pixels at the different positions in the display panel and applying gray grade signals with different sizes. Particularly, with regard to the display panel with a large size, a high resolution ratio and a high refresh rate, charging rates on different positions in the display panel of a source electrode driving circuit can keep consistent, so that the uniformity of display brightness of the display panel can be improved; and furthermore, the display quality of the display panel can be improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a driving circuit of a display panel, a driving method thereof and a display device. Background technique [0002] With the continuous development of display technology, display devices with large size, high resolution and high refresh rate have become a research hotspot in the field of display. [0003] In the existing display device, the greater the distance between the pixel and the source driving circuit, the greater the resistance of the data line and the capacitance between the data line and the common electrode, and the shorter the charging time of the source driving circuit for the pixel. The lower the charging rate, the inconsistent charging rate of each pixel by the source driving circuit will lead to poor uniformity of display brightness of the display device, which will affect the display quality of the display device. For example, if figure 1 As shown, the solid l...

AI Technical Summary

Problems solved by technology

[0004] In view of the problem that the charging rate of each pixel in the source drive circuit of the existing display device is inconsistent, for a display device with a small size, low resolution, and low refresh rate, the scanning time of each row of pixels is relatively sufficient, which can be achieved by Prolong the charging time for pixels far from the source drive circuit to improve the problem of inconsistent charging rates of each pixel by the source drive circuit; however, for display devices with large size, high resolution, and high refresh rate , the scan time of each row of pixels is very short, and it is impossible to improve the inconsistent charging rate of each pixel by the source drive circuit by prolonging the charging time for pixels far from the source drive circuit

[0005] Therefore, how to effectively improve the inconsistent charging rate of each pixel by the source driver circuit in a large-size, high-resolution, high-refresh rate display device is a technical problem urgently needed by those skilled in the art.

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