commit cbaf57fb19253e53197c248dda593442de52cdf5 parent 88179535e35e0b46e821afa1ea9a7eb1b18de03c Author: Michał M. Sapka <email@example.com> Date: Thu, 23 Feb 2023 15:16:17 +0100 feat: article for 2023-02-23 Diffstat:
1 file changed, 15 insertions(+), 0 deletions(-)
diff --git a/content/2023/pulse-width-modulation-on-oled-screens.md b/content/2023/pulse-width-modulation-on-oled-screens.md @@ -0,0 +1,15 @@ +--- +title: "Pulse Width Modulation on Oled Screens" +category: "hardware" +abstract: OLED flickers and some of us want to rip their eyes out +date: 2023-02-23T15:13:20+01:00 +year: 2023 +draft: false +tags: +- OLED +- PWM +- mobile-phones +--- +Today I've learned about PWM (Pulse Width Modulation) on OLED screens. It turns out that brightness changes don't apply to individual pixels - they always shine at 100%. So instead, what happens is that unless we set the brightness to 100%, the device rapidly switches off and on again backlight of the screen. + +We are talking about hundreds of hertz, and there is [math to understand](https://en.wikipedia.org/wiki/Pulse-width_modulation), but some people can see the flickering and are therefore unable to use OLED screens.