3 ms·
Special shout-out and thanks regarding: > To maximize eye comfort, we use a DC mode backlight controller instead of a PWM one that can cause visible flickering
by frmwklptpq 5y ago
Special shout-out and thanks regarding:
> To maximize eye comfort, we use a DC mode backlight controller instead of a PWM one that can cause visible flickering
I hope this still stands, and it uses true DC dimming. If so, thank you so much!
These days it is hard to find non-PWM laptops even in premium segment.
Even high-frequency PWM is not great for eyestrain, so DC dimming is really appreciated! Some manufacturers go as low as 250HZ.
p.s.
If anyone wants to check if your display has PWM:
0. All OLED screens utilize PWM. They are terrible to view in low light environment. This means that all new phones and OLED laptops are terrible for night reading, don't do it! If you are curious about headaches after extensive screen time, guess no more.
1. For LCD laptops, however, set display brightness at 10% (can try different settings in low range, too)
2. Open some bright content (e.g. blank white page) and go to some completely dark room.
3. Using phone camera's preview screen, set it to photo mode and play with different settings of exposure (in pro/advanced settings) while pointing at the screen: try 1/8000, 1/250, etc. Also try slow-motion capture of the screen. High-frequency PWM (new Mac laptops) is quite bad, but hard to detect without special equipment, but still can easily put eyestrain. Low frequency PWM is much easier to detect with just a phone camera.