Patent ID: 11158249

Abstract:
The present disclosure provides a display driving device, method and an OLED display device, and the display driving device includes: an interface module, configured to receive image data of a display chip and sending a first scanning signal in each of frame periods; a frame buffer, configured to send a buffer signal after receiving the first scanning signal from the interface module; a timing controller, configured to send a second scanning signal to the display panel according to the buffer signal sent by the frame buffer; in response to the display driving device is switched from a screen self-refresh mode to a vertical synchronization mode, the delay time between the second scanning signal and the buffer signal gradually decreases, one frame period by one frame period, to zero or gradually increases, one frame period by one frame period, to duration of one frame period. When the display device is switched back to the vertical synchronization mode, the present disclosure causes the vertical synchronization signal generated by the display chip and the timing controller to be resynchronized for reducing phase mismatch, thereby improving display response speed of the display device.