We are now quite familiar with displays with high refresh rates in the mobile space, as the first pioneering 90Hz devices last year have now evolved into a 120Hz smartphone. The new is even faster becoming the standard. While all of these devices offer an enhanced user experience by providing a smoother gaming and scrolling experience, they all come with notable compromises when it comes to efficiency. energy use and battery life.
Today, Samsung Display announced that it will for the first time reveal a new generation display panel that will allow the use of variable refresh rate technology, alleviating one of the biggest limitations of smartphones accelerating. Current generation high refresh rate. The new technology will debut on the new Galaxy Note20 Ultra for the first time, which will hit the public in just two weeks.
For now, the biggest problem facing devices using displays with high refresh rates is the fact that all current implementations still operate at a fixed refresh rate regardless of the screen content. What is the picture, which means they always stick to 60, 90 or 120Hz depending on the smartphone.
In particular, this year’s smartphones with a 120Hz display have seen the efficiency of power consumption increase significantly when operating at this higher refresh rate. While these phones offer the ability to switch between different refresh rates, one can’t call these mechanisms variable refresh rate (VRR) display because they can’t switch seamlessly. circuit and quick between these modes. Hence, even when you are displaying a stationary stationary monitor, the monitor continues to refresh at 120Hz and incurs a penalty of large, less than ideal power consumption.
Samsung’s new display panel used in the new Note20 Ultra is actually described as a VRR panel, with Samsung promising refresh rate modes like the ability to work in 120 modes, 60, 30 and 10Hz. The latter super-low refresh rate has never been used in smartphones. Samsung describes that the display can now manually downgrade to this new 10Hz mode when viewing static content.
“Current smartphone panels only provide a fixed refresh rate. They cannot automatically correct the phone’s refresh rate, which can lead to image flicker due to discrepancy. brightness at a lower refresh rate. 10Hz. “
Samsung describes the use of new backplane technology to achieve this – while we have not had an official response from Samsung to our questions on the matter, there are rumors that this is the case. The company introduced the LTPO multipurpose backplane technology, which enables it to have higher switching efficiency and lower power consumption.
Another question that still needs to be answered is the exact details of Samsung’s VRR performance and whether it is the correct implementation of adaptive sync technology and whether it has better refresh rate details in the 10. -120Hz in addition to the 60 and 30Hz examples mentioned or not.
For now, such a VRR implementation would also require integrating the software stack deeper into the operating system, the GPU driver, and the display driver to fully allow it to seamlessly operate transparently. on any kind of static content or low frame rate – we’ll have to investigate this topic again once the Note20 Ultra devices officially launch.
Samsung claims that the new technology will be able to reduce energy usage on the phone’s display panel by 22% for general use. Furthermore, there is a claim that it uses only 60% of the power of current monitors when it is operating in super-low 10Hz mode – though neither of these figures indicate they’re being compared. with what baseline (60 or 120Hz monitor?).
In addition to making 120Hz a viable option for everyday use without a major impact on the battery, the new technology has the potential to improve power efficiency even beyond the current 60Hz display, Hope to significantly increase battery life in next generation devices.