CPC G09G 3/3225 (2013.01) [G09G 2340/0435 (2013.01)] | 17 Claims |
1. A display screen rate conversion method, applied to a display driver integrated circuit (DDIC) chip of an organic light-emitting diode (OLED) display screen, comprising:
initializing display screen parameters according to a first refresh rate;
in response to receiving first image data sent by an application processor (AP), performing an image scanning according to the first refresh rate, comprising:
generating a vertical synchronous signal (Vsync) according to the VFP corresponding to the first refresh rate;
matching a timing of a first light-emitting (EM) start vertical (ESTV) with a timing of a vertical back porch (VBP), and performing an EM scanning according to an EM frequency; wherein a position of the VBP is determined according to a position of the Vsync; and
matching a timing of a first gate start vertical (GSTV) and the timing of the first ESTV, and performing a gate scanning according to the first refresh rate;
in response to not receiving second image data sent by the AP within a preset delay duration of a vertical front porch (VFP) corresponding to the first refresh rate, adjusting the first refresh rate to a second refresh rate; wherein the second refresh rate is less than the first refresh rate; and
adjusting the display screen parameters according to the second refresh rate.
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