A display panel, its driving method and display device

Abstract

The invention discloses a display panel, its driving method and a display device. Since the sub-pixels of different colors connected to the same data line output data signals through different operational amplifiers respectively, and the sub-pixels of the same color on the same data line are output through different operational amplifiers. The same operational amplifier outputs a data signal. Therefore, when the above-mentioned display panel is displaying a frame of solid-color images, even if the grayscale values ​​corresponding to sub-pixels of different colors are different, since the sub-pixels of the same color connected to the same data line correspond to the same operational amplifier, that is, the sub-pixels of the same color The data signal of the same gray scale value of the sub-pixel is always output by the same operational amplifier, and there will be no gray scale jump, so the charging amount of the sub-pixel of the same color is the same, and the brightness is also the same when displayed, so that it can be used for Eliminate the light and dark stripes that appear when the existing display panel displays a solid-color picture, thereby improving the display effect of the display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display panel, a driving method thereof and a display device. Background technique [0002] In conventional liquid crystal display devices and organic light-emitting diode (OLED) display devices, each point (pixel) is composed of multiple sub-pixels to display colors through light mixing, for example, each pixel is composed of red sub-pixels, green sub-pixels, blue sub-pixels, and blue sub-pixels. Each color sub-pixel consists of one (RGB mode). [0003] In order to improve the visual effect, people put forward higher and higher requirements for the resolution of the display device (the number of pixels in a unit size); this requires the size of the sub-pixel to be smaller and smaller, but due to the limitation of the process, the size of the sub-pixel cannot be unlimited zoom out. [0004] In order to improve the display effect when the sub-pixel size is fixed, a virtual di...

AI Technical Summary

Problems solved by technology

For example, when R=0, G=127, B=255 or R=255, G=127, B=0, then the grayscale value 127 output by the operational amplifier to the green sub-pixel G may jump from 0 in the previous row , it may also be changed by 255 in the previous line. Although the grayscale value of the green sub-pixel G in the entire display panel is 127, the green sub-pixel G The actual charging amount of the pixel G is higher, so the brightness of the green sub-pixel G that jumps from 0 to 127 is higher than the brightness of the green sub-pixel G that jumps from 255 to 127, thus visually presenting bright and dark horizontal stripes , affecting the display effect of the display panel

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