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

A display terminal, comprising a processor and a memory, wherein the processor is electrically connected to the memory, the memory is configured for storing instructions and data, and the processor is configured for executing following steps:

• obtaining a grayscale data of a displayed image, wherein the displayed image comprises a plurality of pixel subareas, and the grayscale data comprises a subarea grayscale value of each of the pixel subareas, wherein the step of obtaining the grayscale data of the displayed image comprises:
• obtaining a grayscale value of each of pixels in the displayed image;
• and taking each of the pixel subareas as a target pixel subarea, calculating an average grayscale value of all the pixels in the target pixel subarea, and taking the average grayscale value as the subarea grayscale value of the target pixel subarea;
• determining a target current level from preset multiple current levels according to the grayscale data, wherein the target current level comprises a subarea current level corresponding to each of the pixel subareas, wherein the step of determining the target current level from the preset multiple current levels according to the grayscale data comprises:
• determining a target grayscale range to which the subarea grayscale value of the target pixel subarea belongs according to a grayscale range corresponding to each of the preset current levels;
• and taking the current level corresponding to the target grayscale range as the subarea current level corresponding to the target pixel subarea;
• determining a pulse width modulation signal according to the grayscale data, wherein the pulse width modulation signal comprises a pulse width modulation sub-signal corresponding to each of the pixel subareas;
• and the step of determining the pulse width modulation signal according to the grayscale data comprises:
• when the subarea current level corresponding to the target pixel subarea is a maximum current level, determining the pulse width modulation sub-signal corresponding to the target pixel subarea according to the subarea grayscale value of the target pixel subarea;
• and when the subarea current level corresponding to the target pixel subarea is not the maximum current level, determining a compensated subarea grayscale value from a preset grayscale compensation table according to the subarea grayscale value of the target pixel subarea, and determining the pulse width modulation sub-signal of the target pixel subarea according to the compensated subarea grayscale value;
• and
• driving the light emitting elements to emit light according to the target current level and the pulse width modulation signal, wherein the light emitting elements are divided into a plurality of backlight subareas, and the backlight subareas are arranged corresponding to the pixel subareas in a one-to-one correspondence, wherein the step of driving the light emitting elements to emit light according to the target current level and the pulse width modulation signal comprises:
• driving the light emitting element in the backlight subarea corresponding to the target pixel subarea to emit light according to the subarea current level and the pulse width modulation sub-signal corresponding to the target pixel subarea.