RGBW 4K UHD laptops have thankfully fallen out of flavor

[Redaktion]

Exactly one year ago, we complained that some manufacturers were shipping laptops with "fake" RGBW 4K UHD displays without advertising them as such. It appears that the trend has stopped now that RGBW panels are nowhere to be found on the latest 4K laptops.

https://www.notebookcheck.net/RGBW-4K-UHD-laptops-have-thankfully-fallen-out-of-flavor.418087.0.html

[S.Yu]

Yup, it's just as an RYB CFA impacts color fidelity. Low quality data is low quality.

[Jun Wong]

Yup, it's just as an RYB CFA impacts color fidelity. Low quality data is low quality.

LOL RYB CFA is not the same thing as RGBW display. You're trying to compare an input device and an output device and obviously the comparison won't work in that way. Low quality data will still look low quality no matter what kind of display you use, RGB or RGBW.

[S.Yu]

Yup, it's just as an RYB CFA impacts color fidelity. Low quality data is low quality.

LOL RYB CFA is not the same thing as RGBW display. You're trying to compare an input device and an output device and obviously the comparison won't work in that way. Low quality data will still look low quality no matter what kind of display you use, RGB or RGBW.

I'm not saying that it's the same thing, but they're comparable in that color data is lost/traded for more luminance, whether during input or output.

I downloaded some OOCJPGs from P30P's 10MP output, boosted saturation by 100 in PS, and found more areas of white (the lack of color information becomes evident on saturation boosts as colored pixels deviate further from white, while white pixels remain white) than could usually be explained from sharpening algorithms. There's also more white compared against Huawei's past two flagships.

I believe it's a result of aggressively suppressing color artifacts from erroneous interpolation due to the lack of color resolution, also the lack of global saturation of P30P output is meant to mask this.

Despite the aggressive suppression, there are still interpolation artifacts, and slightly worse than that of the P20P, at that.
https://images.anandtech.com/galleries/7027/P30Pro_IMG_20190411_133322.jpg
Across the frame, in almost any type of foliage, there are blots of color artifacts in green(too green, with a hint of cyan) and orange and pink.

[Sliderpro]

Who wrote this, is he out of his mind?
Laptops have traditionally very LOW max brightness, typically around 250-350. White pixels allow for MUCH brighter screens without driving as much power!
And at the same time, pixels consists of subpixels. If panel is is advertised as 4K, it doesnt meant that panel has fewer PIXELS, because changing the amount of SUBPICELS, does not make less PIXELS, which is 4K.

[Ednumero]

@Sliderpro

There are ways to achieve higher brightness to power ratios that don't involve sacrifices to resolution integrity or color representation. IGZO displays, for example, use smaller transistors for smaller black lines between pixels, so more of the backlight can shine through.

And if smaller transistors aren't available to a manufacturer, wouldn't "lower" resolutions such as 2880(RGB)x1620 or 3200(RGB)x1800 be a better compromise?

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EDIT: @ Notebookcheck staff, thanks for providing awareness on this issue. But please, please remove the RG/BW display equipped Fujitsu LifeBook U758 from the 'Best Displays' article. RG/BW should disqualify or at least severely diminish a laptop in such rankings to the point that other laptops make it to the top 30 instead.

Thanks