Overhaul method and driving method for display device and display device

An overhaul method for a display device, wherein the display device comprises a display panel, a driving circuit, and a power source configured for providing a voltage required by the display panel and the driving circuit;

• the display panel comprises screen gate driving circuits configured for receiving a screen gate driving signal output by the driving circuit to drive a gate line in the display panel, and the screen gate driving circuits comprise a first screen gate driving circuit and a second screen gate driving circuit;
• the first screen gate driving circuit and the second screen gate driving circuit are disposed on two sides of the display panel respectively;
• the screen gate driving signal comprises a first frame start signal and a second frame start signal independent of each other;
• the first frame start signal is configured to control the first screen gate driving circuit, and the second frame start signal is configured to control the second screen gate driving circuit;
• wherein each of the first screen gate driving circuit and the second screen gate driving circuit is coupled to all gate lines of the display panel;
• the overhaul method comprises:
• in response to detecting that both the first screen gate driving circuit and the second gate driving circuit are normal, setting both the first frame start signal and the second frame start signal output by the driving circuit to operating levels simultaneously;
• in response to detecting that the first screen gate driving circuit is damaged and the second screen gate driving circuit is normal, setting the first frame start signal output by the driving circuit to a non-operating level, and setting the second frame start signal to an operating level;
• and
• in response to detecting that the second screen gate driving circuit is damaged and the first screen gate driving circuit is normal, setting the second frame start signal to a non-operating level, and setting the first frame start signal to an operating level;
• wherein in the case where either of the first screen gate driving circuit and the second screen gate driving circuit has a malfunction, the other of the two is operative to function normally for single-sided driving all the gate lines of the display panel.