DxOMark test shows OLEDs more likely to cause eye fatigue than LCDs

Recently, DxOMark released its new research article about the reasons for the flickering of popular science smartphone displays and whether it will damage eyesight or not. The report also suggests that OLED screens are more likely to cause eye fatigue than LCDs.

According to DxOMark, flicker refers to the continuous on and off of the screen and the human eye’s iris expands and contracts according to the brightness change. This automatic physiological response explains why our eyes feel tired after watching the screen for a long time as the eyes are always in high-intensity work.

However, the OLED and LCD screen’s light source power supply method determines that these two technologies will have flicker effects. Usually, the flicker effect of OLED panels is more obvious than the LCD displays.

DxOMark pointed out that the PWM (Pulse Width Modulation) frequency range of OLED screens is 50 to 500Hz and the frequency of LCD is higher than 1000Hz, while the human eye is only sensitive to flicker at 250Hz, so OLED displays are more likely to cause eye fatigue than LCDs.

Aside from this, DxOMark has also revealed the test results of the refresh rate and PWM frequency of smartphones from various brands. Among them, Samsung’s Galaxy S20 Ultra 5G that supports 60Hz refresh rate OLED panels has a PWM frequency as low as 241Hz, which is very easy to cause eye fatigue.

On the other hand, the PWM frequency of the Xiaomi Mi 10T Pro mobile phone with a 144Hz refresh rate LCD panel is as high as 2360Hz, which is much higher than the human eye’s sensitivity to flicker. If you want to read the full research, you can check it out by clicking here.

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