Method and device for driving a display panel, and a display device

A device for driving a display panel, wherein the device comprises:

• a main control chip, configured to receive an original image signal, and compare a difference between a current frame original data and a previous frame original data of the original image signal to obtain a first difference value;
• combine the current frame original data and the first difference value, and transmit the combined data according to a predetermined code;
• a timing control chip, communicatively connected to the main control chip through the predetermined protocol, and configured to:
• receive the combined data and decode the combined data to separate the current frame original data from the first difference value;
• perform a multi-level color processing on the current frame original data to obtain a processed data of the current frame;
• convert the first difference value to a standard difference value through a standard conversion;
• determine whether the standard difference value is greater than or equal to a predetermined value, and if yes, output the processed data of the current frame;
• if not, compare a difference between the processed data of the current frame and the processed data of the previous frame to obtain a second difference value;
• compare a magnitude of the standard difference value and that of the second difference value, determine that an offset range of the processed data of the current frame is small when the standard difference value is greater than or equal to the second difference value, and directly output the processed data of the current frame;
• determine that the offset range of the processed data of the current frame is large when the standard difference value is smaller than the second difference value, and add or subtract the first difference value to or from the processed data of the previous frame as a corrected data, and output the corrected data;
• and
• a driving chip, connected to an output end of the timing control chip, and configured to drive the display panel according to data output by the timing control chip.

A display device, wherein the display device comprises a display panel and a device for driving a display panel;

• the device comprises:
• a main control chip, configured to receive an original image signal, and compare a difference between a current frame original data and a previous frame original data of the original image signal to obtain a first difference value;
• combine the current frame original data and the first difference value, and transmit the combined data according to a predetermined code;
• a timing control chip, communicatively connected to the main control chip through the predetermined protocol, and configured to:
• receive the combined data and decode the combined data to separate the current frame original data from the first difference value;
• perform a multi- level color processing on the current frame original data to obtain a processed data of the current frame;
• convert the first difference value to a standard difference value through a standard conversion;
• determine whether the standard difference value is greater than or equal to a predetermined value, and if yes, output the processed data of the current frame;
• if not, compare a difference between the processed data of the current frame and the processed data of the previous frame to obtain a second difference value;
• compare a magnitude of the standard difference value with that of the second difference value, determine that an offset range of the processed data of the current frame is small when the standard difference value is greater than or equal to the second difference value, and directly output the processed data of the current frame;
• determine that the offset range of the processed data of the current frame is large when the standard difference value is smaller than the second difference value, and add or subtract the first difference value to or from the processed data of the previous frame as a corrected data, and output the corrected data;
• and
• a driving chip, connected to an output end of the timing control chip, and configured to drive the display panel according to data output by the timing control chip.