Driving circuit and driving method of driving circuit

A driving method of a driving circuit, applied to a display panel, the display panel comprising pixel units and data lines, the driving circuit comprising a plurality of circuit units connected in series, each of the circuit units comprising a plurality of voltage dividing resistors connected in parallel, the plurality of voltage dividing resistors comprising a first resistor and a second resistor, a resistance of the first resistor being less than the resistance of the second resistor, the driving method comprising:

• obtaining an over-driving instruction, which carries information indicating that the pixel unit needs to be over driven;
• and
• in response to the over-driving instruction, switching a connected voltage dividing resistor in a selected circuit unit under a current-frame grayscale from the first resistor to the second resistor such that the pixel unit is over driven;
• wherein when there are a plurality of second resistors, and the step of switching the connected voltage dividing resistor in the selected circuit unit under the current-frame grayscale from the first resistor to the second resistor comprises:
• calculating a grayscale voltage difference between the current-frame grayscale and a previous-frame grayscale of the data line;
• determining a target voltage dividing resistor from the plurality of second resistors of the selected circuit unit under the current-frame grayscale based on the grayscale voltage difference;
• and
• switching the connected voltage dividing resistor in the selected circuit unit from the first resistor to a target voltage dividing resistor.

A mobile terminal, comprising a driving circuit applied to a display panel, the display panel comprising pixel units and data lines, the driving circuit comprising:

• a plurality of circuit units connected in series, each of the circuit units comprising a plurality of voltage dividing resistors connected in parallel, wherein the plurality of voltage dividing resistors comprise a first resistor and a second resistor, a resistance of the first resistor is less than the resistance of the second resistor, the plurality of circuit units divide a plurality of first reference voltages into a plurality of divided voltages corresponding to a plurality of grayscales, and the divided voltages are provided for the pixel units via the data lines;
• and
• a controller, configured to select the first resistor of at least one selected circuit unit to be connected from the plurality of circuit units based on a current-frame grayscale of the data line, and select the second resistor of the selected circuit unit to be connected when the pixel unit needs to be driven by a second reference voltage;
• wherein when there are a plurality of second resistors, the controller is further configured to determine a target voltage dividing resistor from the plurality of second resistors of the selected circuit unit based on a grayscale voltage difference between the current-frame grayscale and a previous-frame grayscale of the data line, and select the target voltage dividing resistor to be connected when the pixel unit needs to be driven by the second reference voltage.