Decrease screen brightness below minimum level, by turning off individual pixels. This way the screen contrast is kept at the same level. Save battery on newer AMOLED screens - they will turn off black pixels completely. Tap app icon 3 times to show settings dialog. Includes screen pattern editor. Screen pattern is shifted each 5 minutes to prevent uneven pixel wear-out. This app has limited functionality on Android 7 and newer, it cannot dim system buttons and notification area, because of new security model in Android 7. App sources available here: https://github.com/pelya/screen-dimmer-pixel-filter</br></br></br></br></br></br></br>