od panrt 4. 10. 2020 11:32
Screen Flickering / PWM (Pulse-Width Modulation)
ℹTo dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM detected 2404 Hz ≤ 43 % brightness setting
The display backlight flickers at 2404 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 43 % and below. There should be no flickering or PWM above this brightness setting.
The frequency of 2404 Hz is quite high, so most users sensitive to PWM should not notice any flickering.
In comparison: 51 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 17588 (minimum: 5 - maximum: 2500000) Hz was measured
Test redmi note 9 pro na PWM a mohu říct že IPS panely mají lepší hodnoty PWM než Oled.
-- 4. 10. 2020 12:36 --
Tak sem se dival na YouTube a Poco X3 vyzařuje PWM, je vidět na kameře, u redmi note 9 pro ne.
U Poco je nevýhoda 120Hz panel a proto jde vidět PWM.