AI Overview
Low PWM (Pulse Width Modulation) frequency can indeed contribute to eye strain due to perceived flicker, especially at lower brightness settings. PWM is a technique used to control screen brightness by rapidly switching the backlight on and off. If the frequency of this on/off cycle is too low, the flickering can become noticeable and cause eye discomfort.
Here's a more detailed explanation:
- How PWM Works:
PWM controls the brightness of a screen by adjusting the "duty cycle" of the backlight. A higher duty cycle (more "on" time) means a brighter screen, while a lower duty cycle (more "off" time) means a dimmer screen.
- The Problem of Low Frequency:
If the PWM frequency is low, the flickering of the backlight can be visible to the human eye, especially in dimly lit environments.
- Eye Strain and Fatigue:
This perceived flicker can lead to eye strain, headaches, and general fatigue, especially with prolonged screen use.