OLED displays cause more eye strain than LCDs, according to DxOMark

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 .

DevicePanel technologyRefresh rate (Hz)PWM frequency (Hz)
Samsung Galaxy S20 Ultra 5GOLED60241
Huawei P40 ProOLED90362
OnePlus 8 ProOLED120481
Oppo Find X2 ProOLED120483
Samsung Galaxy Note20 Ultra 5GOLED120240
Xiaomi Mi 10T ProLCD1442360

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.

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