Pixel driving circuit and method, and display device

Abstract

The invention provides a pixel driving circuit and method, and a display device. The pixel driving circuit comprises multiple sub pixels arranged in an array mode, multiple data lines and scanning lines and multiple first and second voltage adjusting modules, in the driving process, sub pixels in a (2n 1)th row and sub pixels in a 2nth row are scanned, a first voltage regulating module is used forrespectively inputting a first common voltage and a second common voltage to a second end of a second capacitor of the connected sub pixels when a first film transistor of the connected sub pixels isturned on and off, and a second voltage regulating module is used for respectively inputting a third common voltage and the second common voltage to a second end of a first capacitor of the connectedsub pixels when the first film transistor of the connected sub pixels is turned on and off. The scanning speed of the pixel driving circuit is greatly improved, a first pixel electrode and a second pixel electrode in the same sub pixel can be inputted with different voltages, and a problem that a display frame is whitened existing in the display device in a large viewing angle state is effectively solved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a pixel driving circuit, a pixel driving method and a display device. Background technique [0002] A liquid crystal display device (Liquid Crystal Display, LCD) is one of the most widely used flat panel displays at present, and a liquid crystal panel is a core component of the liquid crystal display device. A liquid crystal panel usually consists of a color filter substrate (Color Filter Substrate, CF Substrate), a thin film transistor array substrate (Thin FilmTransistor Array Substrate, TFT Array Substrate), and a liquid crystal layer (Liquid Crystal Layer) arranged between the two substrates. constituted. Generally, pixel electrodes and common electrodes are respectively arranged on the array substrate and the color filter substrate. When a voltage is applied to the pixel electrode and the common electrode, an electric field will be generated in the liquid cr...

AI Technical Summary

Problems solved by technology

However, large-sized liquid crystal display devices have the problem of visual whitening in the state of large viewing angles, which is caused by the inconsistency between the light transmittance in the state of large viewing angles and the light transmittance in the state of front view, specifically, at low In the case of grayscale, the light transmittance seen by the human eye under the state of large viewing angle is higher than that seen by the human eye under the state of front view. The transmittance is lower than the light transmittance seen by the human eye in the state of frontal vision, and the human eye is more sensitive to low-gray-scale light, so the display screen seen in the state of large viewing angle will be whiter than the picture seen in the state of frontal view. How to solve the problem of whitening of the display screen under large viewing angles has become the focus of research in the field of display devices

Images