Since ~2020, several manufacturers have started using the LED DC Dimming technology in their laptops with IPS panels. This is, for example, Lenovo and Xiaomi. There are also IPS matrices with such technology (BOE CQ NE160QDM-NY2, LG LP156WFC-SPDZ).
But isn't DC Dimming designed to solve OLED class panels PWM problems? Usually IPS has very high flicker frequency, like thousands of Hz. So, two questions:
- What's the purpose of DC Dimming in IPS?
- Can it cause eye strain?