Electronic device and driving method therefor, display driver, and processor

Abstract

Embodiments of this application provide an electronic device and a driving method therefor, a display drive, and a processor, which relate to the field of electronic technologies, to cause an actual screen refresh frequency to respond to an image refresh frequency of a core processing chip like an upper-layer SOC in a timely manner. The electronic device includes a DDIC and an SOC. The DDIC is configured to send a TE signal, where a frequency of the TE signal is a first fixed frequency f1, and f1 is a common multiple of a plurality of screen refresh frequencies f supported by the electronic device. For example, if f supported by the electronic device includes 60 Hz, 90 Hz, and 120 Hz, f1 is 360 Hz. The SOC is configured to receive the TE signal, and output display data to the DDIC at a variable frequency f2, where f1=n×f2. In this case, a pulse period of f1 is a first pulse period T1, a pulse period of f2 is a second pulse period T2, and T2=n×T1. n is a ratio of f1 to f of a current frame. The second pulse period T2 of f2 of the current frame is always n times the first pulse period T1 of f1. To be specific, the display data is always sent once after n pieces of T1. n varies with f.

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