Samsungs 120Hz mobile displays use variable refresh rates to save power – Engadget

This new screen, debuting initially on the Galaxy Note20 Ultra 5G, can hit 120Hz when high rates are required for gaming, drop to 60Hz for video playback, 30Hz when youre messaging or as low as 10Hz when its displaying a still image.
At the slowest setting, Samsung claims it can use just 60 percent of the normally-required power, while other displays cant adjust without beginning to flicker. Samsung Display mobile display screen planning VP Ho-Jung Lee said in a declaration “Our Adaptive Frequency screen innovation is anticipated to considerably improve the user experience by calibrating refresh rates in line with the requirements of a specific application and therein more precisely allocating readily available power.”
Overall, the business claims its tech can conserve power by as much as 22 percent compared to other screens. Nevertheless, as Anandtech explains, its unclear how granular the control can be, or if its limited to the defined settings. Weve seen adaptive sync innovation in screens and even TVs used to decrease tearing, but on these small screens at least the very first application is primarily about saving power.