Always-on display: that's why they use so little battery

Thanks to the always-on display, smartphones can permanently display a lot of information without consuming a lot of energy. The technology of OLED screens plays a major role here. How exactly it works and read more in this article.

This is why the always-on display uses little energy

The always-on-display feature is almost exclusively available on smartphones with an OLED screen. This display technology differs significantly from other types.

• The most important difference between OLED displays and LCD and other displays is the individual backlighting of the panel.
• In this way, OLEDs can control individual pixels and activate them or make them light up.
• This is not possible with other display technologies, since the individual operation of pixels is not possible.
• Unlike OLED, these types only have a backlight, which must always be switched on to display content.
• Thus, the lighting must also be activated when black is displayed, which is not the case with OLED.
• This is exactly the reason why always-on displays use so little energy: All black pixels simply remain deactivated, while other technologies even use black batteries to display black.

More information about the energy-saving displays

The main feature of the always-on displays is the display of time and date. But other things are also displayed.

• Because most always-on displays, for example, also show received notifications and missed calls.
• The current battery level is also usually shown.
• In addition, the music playback is integrated, with which you can control your music quickly.
• It gets even more extensive with Samsung smartphones. Here you can also switch between menus and see your upcoming calendar events, the weather and your next alarm clock.
• You can also open the notifications directly by double-tapping from the always-on display.
• You can also adjust the brightness of the feature and the display orientation on the display.