The Samsung Galaxy Note 20 Ultra is an incredible smartphone. While it is certainly expensive – no doubt about it – they pack in a few new technologies that make it an exciting Android phone to hold in your hands, more than the normal Galaxy Note 20. One of these new technologies is VRR, as Variable Refresh Rate, because the Galaxy Note 20 Ultra is the first smartphone to use Samsung Display’s new VRR OLED display.
Samsung Galaxy Note 20 Ultra XDA Forums
Samsung Display announces that the Galaxy Note 20 Ultra 5G has new display technology that enables more energy saving than was seen on previously commercially available flagships. This low power OLED uses adaptive frequency technology to reduce the power consumption of the display by up to 22% (although a baseline is not specified). This technological adaptive frequency allows the display panel to use variable refresh rates that consume the “least possible amount of power” for each type of application. For mobile games, the display supports a 120Hz scan rate; for movie streaming it goes to 60Hz; emails go down to 30Hz, and displaying still images as you browse through social media takes it down to 10Hz.
Samsung Galaxy Note 20 Ultra 5G (Exynos) First impressions
High-speed smartphones leading up to the Galaxy Note 20 Ultra used certain fixed speeds, which means they have to hang on to 60Hz, 90Hz, 120Hz or 144Hz, depending on the smartphone and the setting. Companies have often adjusted “variable” refresh modes, but these set the display to a relatively conservative 60Hz only per application. The display would consistently go through, always at 60Hz, or at a high refresh rate sometimes and 60Hz in other cases. So while OEMs referred to these mixed modes as “variable” refresh rates, they still offered a seemingly fixed refresh rate – the panel itself could not automatically calibrate the refresh rate as it would result in noticeable image flicker due to luminance differences at lower refresh rates . Samsung Display claims that its new backplane technology eliminates flickering for operating frequencies up to 10Hz, and the Galaxy Note 20 Ultra switches seamlessly between discrete 120Hz, 90Hz, 60Hz, 30Hz and 10Hz refresh rates.
While Samsung Display would suggest that this is a variable refresh rate implementation, the definitive implementation on the Note 20 Ultra is not exactly a real variable refresh rate, as we have seen in other displays, such as gaming monitors and certain TVs. These have really variable refresh rates within a certain range, such as 40Hz to 120Hz, allowing the refresh rate to match the FPS output of the GPU. However, Android does not yet really support VRR. So even though the display is fully capable, the software is not, and Samsung would have to use it to make very heavy modifications to enable true VRR. For now, we can stay content with more options and the resulting energy savings, but it makes us very optimistic about the future.
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Source: BusinessWire
Story Via: AnandTech
