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Lecture 20: Introduction to Color Science (Cont) (29)
surelywang

This image reminds me a lot of this article that talks about newer iPhones coming out with different pixel geometry:

https://www.idownloadblog.com/2017/11/02/iphone-x-oled-pixel-layout/

In the article, the authors talk about how the new pixel geometry involves sub-pixel antialiasing in efforts to make the icons look sharper.

bchan061

Could the subpixels also be arranged as so as a way to dither?

serser11

I also read few articles about the new layout of pixels of the iPhone X since it use the OLED screen, which use a different layout since it came from Samsung. The iPhone X has a higher resolution but the actual “resolution” are still about the same, also the reason why they increase the theoretical resolution to make sure the user will not notice any difference

wjgan7

The RGB layout on the S5 is pretty common, and I believe the reason is that our eyes were evolved to be more sensitive to green light.

Pinbat

The particular layout Samsung uses is their trademarked PenTile family, which as @wjgan7 said is optimized to match the biological functions of human vision. https://en.wikipedia.org/wiki/PenTile_matrix_family

kavimehta

Do these different layouts make a noticeable difference?

aparikh98

Samsung's AMOLED screens have been much better visually over the years compared to iPhones, who didn't use OLED until the iPhone X. Since the technologies of the displays are so different, is it fair to compare these layouts?

aparikh98

Samsung's AMOLED screens have been much better visually over the years compared to iPhones, who didn't use OLED until the iPhone X. Since the technologies of the displays are so different, is it fair to compare these layouts?

henryzxu

Just for some background on the tech itself, from what I understand, iPhones before the X used IPS displays whereas Samsung has used OLED/AMOLED from almost the start. I remember one of Samsung's selling points for the Galaxy S4 was its super vibrant, almost oversaturated, AMOLED display.

On a slight tangent, I'm not sure if it's possible in other devices, but I remember being able to see the striping of the IPS display when the screen of my Nexus 5 was turned off.

As for differences, I'm not sure if the different layouts make a noticeable difference, but the different technologies do result in different pros and cons for each. In contrast to each pixel of an AMOLED emitting its own light, IPS displays must use a backlight and a color filter. Consequently, the pixel level control of OLED displays allows the display to use less power and produce blacker blacks (since you can just turn the pixel off). However, OLED displays are not as sharp, have trouble producing realistic colors compared to their IPS counterparts, and are subject to burn-in (unsure of the explanations here). Despite these drawbacks, I believe the industry trend is towards OLED displays due to their aforementioned benefits.

AnastasiaMegabit

Are the blue and red pixels smaller than the green ones or is it just me? Would that fact account for why there are more green than blue or red? I still don't understand that part.

tyleryath

Can screens be adjusted to account for color blindness? I would imagine this could work by pumping up the intensity of the color that the person is deficient in? Maybe??

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