First of all, the frequency range of OLED display and LCD display PWM is different-the PWM frequency range of OLED screen is ~50~500 Hz, while the PWM frequency of LCD starts at around 1000 Hz or higher. “ LCD and OLED screens have different power supply methods for light sources, both technologies have a flicker effect however, the flicker effect of OLED screens is usually more pronounced than that of LCDs. While on the other hand OLED tech uses an OLED for each pixel that can emit its light. The LCD screens use a bright LED backlight source and don’t emit any light of their own, this compensates the brightness attenuation which is mainly caused by the RGB (Red Green Blue) colour filter. Why Smartphone FlickersĪs we all know, nowadays smartphones come equipped with massive LCD or OLED display technology and the flickering issue is a big problem for both panels. Let’s have a closer look at the reason behind the claim. In the latest report of DXOMark, it has been claimed that the OLED displays are bad for the users compared to LED ones.

According to the latest report, the physiological reactions of the eyes are the reason behind the headache.Īs per the report, during the long hour usage, the iris expands and contracts frequently, and due to that eyes feel tired, especially while using low-light or dark conditions. The reason behind the headache is the flickering of the screen which happens consistently, though we are not aware of the flicker, but our eyes respond to those flickers and cause the iris expansion and contraction depending on the brightness. There are many instances where you might have faced a headache after using a smartphone for a longer period.

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