A display device and its driving method

Abstract

The invention describes a display device, comprising: a plurality of pixel circuits; a plurality of data lines; a driver chip, for providing first data signals and second data signals, wherein the first data signals are time-varying signals, the second data signals are constant-voltage signals, and the electric potential of the second data signals is lower than the lowest electric potential of the first data signals; a first multiplexer, for converting the first data signals to many first secondary data signals which are transmitted to the plurality of data lines; a second multiplexer, for converting the second data signals to many second secondary data signals which are transmitted to the plurality of data lines, wherein the data lines receive the first secondary data signals from the first multiplexer in the data writing process of the pixel circuits, and receive the second secondary data signals from the second multiplexer in the cut-off process of the pixel circuits. By means of the display device provided by the embodiment of the invention, the actual data writing time of each pixel circuit is equal, and images are uniformly displayed, avoiding the situation of non-uniform display.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display device and a driving method of the display device. Background technique [0002] With the development of display technology, the resolution of display devices is getting higher and higher, and there are more and more data lines, resulting in too many lines at the steps of the display panel, which affects the narrow border at the steps. Therefore, in the prior art, a demultiplexer (DEMUX) is proposed, which uses one data channel to time-division multiple input data signals. [0003] Please refer to figure 1 and figure 2 , figure 1 is a multiplex unit in the prior art, figure 2 for figure 1 Timing diagram of the multiplex unit in the . The problems existing in the prior art are illustrated by selecting a multiplexer with 6 paths. Please refer to figure 1 , the multiplexing unit in the prior art includes: an input terminal for inputting a data line signa...

AI Technical Summary

Problems solved by technology

[0005] However, in the prior art, due to the different turn-on sequences of different transistors, the signal time input by different data lines is also different. After the data line stops inputting signals, due to the effect of the parasitic capacitance on the data line, the pixel will still be charged. , resulting in different charging times for two-day data lines that are turned on at different times

And the greater the time interval between the two transistors being turned on, the greater the difference in the charging time of the corresponding data line, and the display effect will be different when displaying the same image, resulting in poor display

Moreover, as the number of DEMUX options increases, the display defect becomes more obvious

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