公开(公告)号：US11508305B2

公开(公告)日：2022-11-22

申请号：US16996821

申请日：2020-08-18

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Huifeng Lin ,  Yen-Tao Liao

IPC: G09G3/3258

Abstract: A driving method of LED display, configured to be applied to an LED display capable of varying a refresh rate thereof and able to reduce brightness changes due to refresh rate variation, is disclosed in the present disclosure. This driving method includes: controlling an organic light-emitting diode of the LED display by an emission signal having a plurality of frame periods, with each of the frame periods having a PWM part with a duty ratio; detecting whether a change in the refresh rate of the LED display exists; and performing a compensation procedure when the change is detected, with the compensation procedure compensating a brightness difference of the organic light-emitting diode occurring due to the change in the refresh rate by adjusting the duty ratio of the PWM part. Said LED display is also disclosed.