Driving method for amoled display and system thereof

A driving system of an AMOLED display comprising a driver IC module, a GAMMA voltage driving module, a PMIC module, a display panel, and a data input unit, wherein the driver IC module comprises:

• a dividing unit configured to divide a display area of a display panel into a plurality of regions from top to bottom, each region at least comprising one row of pixels;
• a maximum grayscale obtaining unit configured to sequentially obtaining input image signals corresponding to each region from the data input unit, and obtaining a maximum grayscale Gi in the input image signal of the region;
• a grayscale mapping unit configured to perform mapping to all of the grayscales in the input image signal, when the maximum grayscale Gi greater than a predetermined threshold, wherein grayscales 0˜Gi are mapped to grayscales 0˜255;
• and
• an adjustment control unit configured to adjust output power positive voltages corresponding to the regions, to make luminance corresponding to the adjusted grayscales 0˜255 the same as the luminance corresponding to the grayscales 0˜Gi before the adjustment.