Driving method and driving circuit of display panel, and display device

A driving circuit for a display panel, the display panel comprising a plurality of data lines, a plurality of scan lines and a plurality of pixel groups arranged in an array, each pixel group comprising a red pixel, a green pixel and a blue pixel, arranged in sequence along a row direction, multiple pixels in a same column are sequentially cross-connected to data lines in two adjacent columns, and multiple pixels in a same row are respectively connected to data lines in different columns, wherein a binding-point voltage corresponding to a gray scale of a binding point of the green pixel or the blue pixel is equal to a charging voltage of the red pixel;

• the driving circuit comprising:
• a source drive circuit, connected to the plurality of data lines of the display panel;
• a gate drive circuit;
• connected to the plurality of scan lines of the display panel;
• and
• a timing controller, connected to the source drive circuit and the gate drive circuit respectively, the timing controller comprising a memory, a processor and a display-panel driver program stored in the memory and executable on the processor, wherein the display-panel driver program, when executed by the processor, causes the processor to perform operations that comprise:
• detecting the binding-point voltage and obtaining, through a calculation, a voltage difference between the binding-point voltage and a common-electrode voltage;
• boosting the binding-point voltage to a preset binding-point voltage when the voltage difference between the binding-point voltage and the common-electrode voltage is smaller than a preset voltage difference;
• and
• performing a line-by-line scan charging on each row of pixels by using the boosted binding-point voltage to charge the green pixel or the blue pixel to a charging voltage corresponding to a target gray scale, and to charge the red pixel to the preset binding-point voltage.

A display device, comprising:

• a backlight source;
• a display panel comprising a plurality of data lines, a plurality of scan lines and a plurality of pixel groups arranged in an array, each pixel group comprising a red pixel, a green pixel and a blue pixel, arranged in sequence along a row direction, multiple pixels in a same column are sequentially cross-connected to data lines in two adjacent columns, and multiple pixels in a same row are respectively connected to data lines in different columns, wherein a binding-point voltage corresponding to a gray scale of a binding point of the green pixel or the blue pixel is equal to a charging voltage of the red pixel;
• and
• a drive circuit for the display panel, the display panel being correspondingly connected to the drive circuit for the display panel, the driving circuit comprising:
• a source drive circuit connected to the plurality of data lines of the display panel;
• a gate drive circuit connected to the plurality of scan lines of the display panel;
• and
• a timing controller connected to the source drive circuit and the gate drive circuit respectively, the timing controller comprising a memory, a processor and a display-panel driver program stored in the memory and executable on the processor, wherein the display-panel driver program, when executed by the processor, causes the processor to perform operations that comprise:
• detecting the binding-point voltage and obtaining, through a calculation, a voltage difference between the binding-point voltage and a common-electrode voltage;
• boosting the binding-point voltage to a preset binding-point voltage when the voltage difference between the binding-point voltage and the common-electrode voltage is smaller than a preset voltage difference;
• and
• performing a line-by-line scan charging on each row of pixels by using the boosted binding-point voltage to charge the green pixel or the blue pixel to a charging voltage corresponding to a target gray scale, and to charge the red pixel to the preset binding-point voltage.