Independent benchmarking platform DxOMark has published a technical article on how OLED displays cause more eye strain than LCDs.
DxOMark has published a lengthy article on the causes of screen flickering in mobile phones and whether it can negatively affect vision. DxOMark claims that OLED displays cause more eye strain than LCDs .
The article points out that flickering occurs due to the constant switching of the screen . The pupil dilates and narrows in response to changes in brightness. As a result, this involuntary physiological response causes our eyes to tire after prolonged exposure to the screen . Because they are always active .
|Device||Panel technology||Refresh rate (Hz)||PWM frequency (Hz)|
|Samsung Galaxy S20 Ultra 5G||OLED||60||241|
|Huawei P40 Pro||OLED||90||362|
|OnePlus 8 Pro||OLED||120||481|
|Oppo Find X2 Pro||OLED||120||483|
|Samsung Galaxy Note20 Ultra 5G||OLED||120||240|
|Xiaomi Mi 10T Pro||LCD||144||2360|
LCD and OLED screens have flickering effect
It has been determined that LCD and OLED displays have a flickering effect using the power mode of the light source , but this is more evident in OLED displays. The frequency range of OLED screens is 50-500 Hz , for LCD screens this value is more than 1000 Hz . According to the research, the flicker sensitivity of the human eye comes into play at around 250 Hz, and therefore the eyes get tired more quickly thanks to OLED screens .
DxOMark has also listed the refresh rates and PWM frequencies of various mobile phone models . Among them is the Samsung Galaxy S20 Ultra 5G mobile phone with an OLED display with a 60 Hz refresh rate . It has a PWM frequency of only 241 Hz, which can easily cause eye strain. The same goes for the Samsung Galaxy S20 Ultra 5G . It is stated that the PWM frequency of the Xiaomi Mi 10T Pro smartphone with an LCD panel with a 144Hz refresh rate reaches 2360Hz, which is much higher than the flicker sensitivity of the human eye.