Gate driving device for dynamically adjusting refresh rate of each display area of display panel

A gate driving device for dynamically adjusting a refresh rate of each display area of a display panel, comprising:

• a plurality of gate driving units, wherein an nth stage gate driving unit of the gate driving units comprises:
• a frequency increasing circuit, coupled to a pre-charge node and a pull-down node, and configured to respectively adjust, based on a system high voltage, an (n−m)th stage carry signal, and a frequency-up indication signal during a frequency-up drive period, a voltage level of the pre-charge node and a voltage level of the pull-down node to have a high voltage level and a low voltage level, wherein the frequency-up indication signal changes with a high-speed change of each image region of a to-be-displayed picture, each of n and m is a positive integer, and n−m is greater than or equal to 1;
• a frequency decreasing circuit, coupled to the pre-charge node and the pull-down node, and configured to respectively adjust, based on a mask signal and an (n−m)th stage clock signal during a frequency reduction drive period, the voltage level of the pre-charge node and the voltage level of the pull-down node to have the low voltage level and the high voltage level, wherein the mask signal changes with a low-speed change of each image region of the to-be-displayed picture;
• and
• an output circuit, coupled to the pre-charge node, having the pull-down node, and configured to generate an nth stage gate drive signal and an nth stage carry signal based on an nth stage clock signal, an (n+m)th stage carry signal, the voltage level of the pre-charge node, and the voltage level of the pull-down node, wherein a quantity of pulses of the nth stage gate drive signal in a frame display cycle changes with changes of the nth stage clock signal, the (n+m)th stage carry signal, the voltage level of the pre-charge node, and the voltage level of the pull-down node.