Brightness

2 articles

Tech 15 Sep 2026 5 min read

OLED PWM Dimming Turns Brightness into Timed Pulses

An OLED pixel does not need a backlight. Its organic emitters produce light directly, so panel electronics can regulate luminance at the pixel level. One common control method is pulse-width modulation, or PWM: emission alternates between active and inactive intervals, and the ratio of those intervals sets the average light output seen over time. That temporal pattern matters because a display can refresh an image at one rate while modulating emitted light at another. A 120 Hz refresh specification therefore says little by itself about the frequency or depth of brightness modulation.

OLED Displays

Tech 05 Sep 2026 7 min read

What Screen Brightness Nits Mean in Everyday Use

A phone, laptop, or monitor may be advertised with a screen brightness of 500, 1,000, or even more nits. The larger number looks easy to compare, but it does not mean the display will run at that brightness all the time or that it will automatically look better in every situation. A nit is a unit used to describe luminance: how much visible light comes from a surface in a particular direction. For everyday display comparisons, the useful mental model is simpler: more nits means the screen is capable of producing more light per unit of visible area under the stated test conditions.

Displays Brightness