Each year, Samsung releases a new flagship display, and each year, DisplayMate writes an evaluation of it using more charts, figures, and data points than you find in your typical graduate thesis. Once again, the Galaxy S8 has gone under the proverbial knife, and once again it’s.
The S8 sets a number of records, including:
The largest native color gamut, at 113% of the DCI-P3 motion picture standard and 142% of the sRGB / Rec. 709 standard that most 1080p content uses (whether screens are correctly calibrated to sRGB is an entirely different question).
It offers the highest peak brightness of any display, at 1,020 nits, though you can only hit this level with automatic brightness enabled (the smartphone will not allow you to manually specify this level if you disable that mode, but it should make the display easier to read in bright daylight).
Its screen reflectance is excellent, at 4.5%, though one display (unspecified) appears to have narrowly edged it, at 4.4%.
The Galaxy S8 offers four color gamuts: Basic (sRGB), Photo (Adobe RGB), Cinema (DCI-P3, often used for 4K), and Adaptive (default, wide gamut). Adaptive is the option Samsung has typically used to make its displays “pop” compared with iPhones. According to DisplayMate, the Galaxy S8 actually offers a new “deep red” OLED that didn’t exist in previous smartphones, and attributes the success of its Adaptive screen display mode at displaying color well to this new OLED.
Samsung and Apple have traded shots over the title of “best smartphone display” for years, though I believe DisplayMate has tended to give the reward to Samsung of late. But the fact that the most recent S8 receives DisplayMate’s first A+ award to-date also underscores how displays, like most aspects of smartphone technology, have improved to where it’s getting hard to find new areas to measurably excel, beyond typical improvements in power efficiency.
Speaking of power efficiency, here’s what DisplayMate has to say on that score:
Since 2013 the Display Power Efficiency of the Galaxy series of Smartphones has improved by a very impressive 56%. This year the new OLED materials on the Galaxy S8 have improved optical and power efficiency with its larger Native Color Gamut than on the Galaxy S7 (142% compared to 131% for sRGB / Rec.709).
While LCDs remain more power efficient for images with mostly full screen white content (like all text screens on a white background, for example), OLEDs are more power efficient for typical mixed image content because they are emissive displays so their power varies with the Average Picture Level (average Brightness) of the image content over the entire screen. For OLEDs, Black pixels and sub-pixels don’t use any power so screens with Black or dark backgrounds are very power efficient for OLEDs. For LCDs the display power is fixed and independent of image content. Currently, OLED displays are more power efficient than LCDs for Average Pictures Levels of 65 percent or less, and LCDs are more power efficient for Average Picture Levels above 65 percent. Since both technologies are continuing to improve their power efficiencies, the crossover will continue to change with time.
The Galaxy S8 also has 4 user adjustable Performance Modes and 3 adjustable Power Saving Modes that reduce the Display Power by lowering the screen Brightness and setting the background to Black, which can significantly reduce display power and more than double the running time on battery.
Here’s the data from DisplayMate:
Here’s how to interpret these results. The larger screen size (13.1-inch versus 11.1-inch) and higher brightness means that more absolute power is consumed by the Galaxy S8. Compared under normalized conditions, however, the two displays are equal both in terms of relative power efficiency at average display power and relative power efficiency. We tend to focus on display efficiency because it’s such a major driver of overall battery life these days, and Galaxy S7 owners have nothing to worry about if they’re stepping up to an S8, at least not as far as increased battery life drain from the display.
If rumors are true and Apple actually fields andisplay for its upcoming iPhone 8, it would be the first time the two companies have gone head-to-head on the display market for years. That will be an interesting comparison to see, though we’d expect Samsung to have a potential advantage given its long history of working with OLEDs in mobile displays.
Source : https://www.extremetech.com/mobile/247058-new-displaymate-round-declares-galaxy-s8s-display-best-can-buy