3 ms·
I think most people are forgetting that LED backlights are controlled usually using PWM which flickers, fast, but still flickers. I haven't found any research a
by Avamander 8y ago
I think most people are forgetting that LED backlights are controlled usually using PWM which flickers, fast, but still flickers. I haven't found any research about how it might affect humans. I suspect it would be better if no-flicker current-controlled LED backlight was used instead of PWM.
- dbuder 8y agoLED backlights are current controlled. LEDs don't like having current through them all the time and that's why they are PWM controlled unless it's a crap consumer product.
- diffeomorphism 8y agoAccording to notebookcheck only about half the devices they tested use PWM: https://www.notebookcheck.net/Why-Pulse-Width-Modulation-PWM-is-such-a-headache.270240.0.html https://www.notebookcheck.net/Why-Pulse-Width-Modulation-PWM... It seems to be well known that it for low frequency PWM it causes headaches for some people, so I would expect that there is at least some research in that direction. That said, it seems to only be a problem for few people and only for very low frequencies.