The reason why the OLED screen "hurts eyes" is that the OLED screen adopts PWM dimming mode, that is, the screen is constantly switched on and off, and the brightness is high for a long time and low for a long time in a cycle. If the switching frequency reaches a certain level, it can't be distinguished by the naked eye, and the mobile phone is always on; It is understood that the flashing frequency of 3000Hz is harmless to human eyes, but the flashing frequency of organic light-emitting diode screens of Samsung, Apple and other mobile phones is only 250Hz, and low-frequency flashing will cause problems such as elevated intraocular pressure and migraine. When the brightness of the screen is low, the stroboscopic rate will decrease, which is more likely to cause damage to the eyes.
The driving of AMOLED screen is to control the working state of diode through signal. When black is displayed, there is no light under the diode, which is relatively better.