can you spot a pentile display with your naked eye? I can't

[guest]

Originally Posted by fryjs

There is something wrong in that picture. If you look towards the bottom right of the pentile icon, it gets closer to what it actually should be. A resized image:

If you look at the bottom of the right image you see text that says "THE VERGE" superimposed on the image. You shink the image down then comment on it?

[fryjs]

Originally Posted by guest

If you look at the bottom of the right image you see text that says "THE VERGE" superimposed on the image. You shink the image down then comment on it?

Uh... yes? Can you not see that the top of the icon is cyan, whilst the bottom right (above the verge text) is closer to white/grey? It doesn't actually look like that on the phone... it's all the one color:white/grey. If the zoomed image was accurate, it wouldn't be cyan at the top when the same image was resized back to non-zoomed....

[guest]

Oh OK, yes I see what you are saying now.

[The PyroPath]

Try THIS article, and be sure to check the images further down.

[aviphysics]

That seems like a reasonable article.

Reading a little more about rod and cone distribution it seems like a non striped configuration could really makes a lot of sense. From hyperphysics I found the distribution of cones by color is "red" cones (64%), "green" cones (32%), and "blue" cones (2%) . Additionally, chromatic aberration causes the blue to be slightly out of focus. However, your brain is more sensitive to the signals from blue cones to compensate but this still doesn't overcome. Additionally, many of these blue cones are outside the forvea which is sort of the high resolution part of your eye. It would therefore seem to make sense to cut the number of blue pixels in favor of more green and red pixels. Not sure what the arrangement would be and you would still want to be able to make pure white. Maybe just replacing half the blue pixels in an RG BG arrangement with white pixels.

Another idea...
I wonder what it would be like if instead of using RG and BG pixels one used three sub pixel types. Something like RedCyan, MagentaGreen, YellowBlue. In this design all pixels would be able to render a perfect greys and 1/3rd the color information. In rg bg neither pixel can render gray but instead render 1/2 the color information. Your eyes have way higher resolution for black and white than color so maybe this would produce a better looking display with fewer sub-pixels.

[guest]

Originally Posted by The PyroPath

Try THIS article, and be sure to check the images further down.

I would pick a RGBW pentile screen over RGB stripe if it were twice the resolution. The energy savings of RGBW would be worth it.

[The PyroPath]

Originally Posted by aviphysics

That seems like a reasonable article.

Reading a little more about rod and cone distribution it seems like a non striped configuration could really makes a lot of sense. From hyperphysics I found the distribution of cones by color is "red" cones (64%), "green" cones (32%), and "blue" cones (2%) . Additionally, chromatic aberration causes the blue to be slightly out of focus. However, your brain is more sensitive to the signals from blue cones to compensate but this still doesn't overcome. Additionally, many of these blue cones are outside the forvea which is sort of the high resolution part of your eye. It would therefore seem to make sense to cut the number of blue pixels in favor of more green and red pixels. Not sure what the arrangement would be and you would still want to be able to make pure white. Maybe just replacing half the blue pixels in an RG BG arrangement with white pixels.


Another idea...
I wonder what it would be like if instead of using RG and BG pixels one used three sub pixel types. Something like RedCyan, MagentaGreen, YellowBlue. In this design all pixels would be able to render a perfect greys and 1/3rd the color information. In rg bg neither pixel can render gray but instead render 1/2 the color information. Your eyes have way higher resolution for black and white than color so maybe this would produce a better looking display with fewer sub-pixels.

[never mind, you don't talk about the stereotyped misconception about rods and cones, misread it. I'll just leave it here to lift us up from general ignorance]

Don't be fooled by the rod & cone stuff they teach you in most schools. The general perception that you see colors with cones and black and white with the rods is wrong, period. Allthough the rods have no color sensitivity they are mostly used to see contrast in extremely dark sistuations. The funky thing is, you don't use them above more then minimal light intensities. They are used in situations where color information is almost absend and light conditions are extremely low. They use an amplification system that responds to even 1 single photon. Because of this, even at moonlight situation the rods are way too sensitive. Have a look at some "real" textbooks about the inner workings of the eyes and eyenerves and you'll be amazed about the ingenuity of the organ and the processes that take place inside it.

[aviphysics]

Originally Posted by The PyroPath

[never mind, you don't talk about the stereotyped misconception about rods and cones, misread it. I'll just leave it here to lift us up from general ignorance]

Don't be fooled by the rod & cone stuff they teach you in most schools. The general perception that you see colors with cones and black and white with the rods is wrong, period. Allthough the rods have no color sensitivity they are mostly used to see contrast in extremely dark sistuations. The funky thing is, you don't use them above more then minimal light intensities. They are used in situations where color information is almost absend and light conditions are extremely low. They use an amplification system that responds to even 1 single photon. Because of this, even at moonlight situation the rods are way too sensitive. Have a look at some "real" textbooks about the inner workings of the eyes and eyenerves and you'll be amazed about the ingenuity of the organ and the processes that take place inside it.

After doing a little more reading it does appear from a couple studies that visual acuity (sort of like eye resolution) is not very color dependent. It seems like it really has more to do with the ability of one's eyes to properly focus the light. My assumption that an eye would have greater visual acuity with white lite was based on the idea that white light is seen with all the cones while a pure red, green or blue light has to rely on a single set of cones. In practice this doesn't really seem to be the limiting factor.

BTW, apparently the theoretical limit of acuity is 20/8 vision (the ability to distinguish lines separated by 8 mm 0.08 in at 20 ft) . This is based on diffraction of light as it passes through the pupil. For comparison, normal vision is 20/20.

edit: wikipedia says that the denominator is in mm but I don't think that can be right. I know I can distinguish 0.01" at around 1 foot. 20 mm would be almost 1" which is certainly wrong. mm are also metric and mixing metric and English doesn't seem right either. I am guessing they meant 0.02" (centiinch?)

[Apocalypsee]

My Razr using pentile display, I could definitely sees it if I really, REALLY look close to the display but for everyday use from comfortable distance such as browsing, playing games and watching videos and such its fine. Coupled with reasonable qHD resolution it reduces the pentile disadvantages slightly and SuperAMOLED deep blacks just really nice, but the colors are too much sometimes. I would prefer to have IPS display, color accuracy instead of boosted colors

[guest]

Originally Posted by Apocalypsee

I would prefer to have IPS display, color accuracy instead of boosted colors

So you would like an RGB stripe Super AMOLED display then.

[wc326]

Originally Posted by guest

So you would like an RGB stripe Super AMOLED display then.

super amoled is nice. but it also burn your screen that is not avoidable. this is the most weak aspect of super amoled panel.


altho i just got my tab 7.7 which uses super amoled as well, i am so worrying about the burn in issues. However, the screen panel is really one of the best which i odn't thik many will dislike
some user has even reported to have their screen burn-in just after 2 weeks.

[guest]

I use auto brightness and don't turn it up manually unless I'm watching Netflix on my phone. The Charge has an additional power savings option for the screen but I am unsure what exactly it does. Also have the screen turn off after a minute of no use.

As the AMOLED screen ages the burn in should even out.

But that's my phone... of course my tablet is an IPS TF101 so I don't worry there.

[aviphysics]

It looks like they were leaving it on the home screen a lot. Maybe using it as a clock. Personally, I have my phone and tablet set to turn of automatically after a couple minutes. Of course, I don't have any Super AMOLED devices.

[Tizen]

Also amoled needs some time to "burnout" to its proper colors. What you see in that picture is that some pixels are still factory fresh from the use of dark colors.

Over time the image quality stabilizes

Edit:

That also looks like a long exposure shot. The actual burn-in probably isn't that bad, but still it's not nice to see it :\

[Apocalypsee]

I don't know the burn-in issue with SuperAMOLED screens. And I don't notice any color differences after use it for quite some time now, or maybe I just get used to its color.

[Tizen]

Oh, the burn in is definitely there. Go into landscape mode and watch where the statusbar is in portrait mode. There should be a slight difference in color intensity.

But I never noticed it before, until someone told me to look for it

[wc326]

Originally Posted by Tisti

Oh, the burn in is definitely there. Go into landscape mode and watch where the statusbar is in portrait mode. There should be a slight difference in color intensity.

But I never noticed it before, until someone told me to look for it

not a myth at all. so many user in XDA forum reporting this same issues.
some even have burnin after 2 weeks to 1month short period of time.

My brother's nexus prime is also burnt. as well as his sgs2.

so pretty much this issues is not avoidable with the way icon works. and status bar works

[shoman24v]

Go look at the Bionic screen. ****, that is BAD. I'm happy with my Nexus screen.

[Apocalypsee]

Originally Posted by Tisti

Oh, the burn in is definitely there. Go into landscape mode and watch where the statusbar is in portrait mode. There should be a slight difference in color intensity.

But I never noticed it before, until someone told me to look for it

Nope there isn't any burn in on my screen by the look of it. I usually play fullscreen games and videos so its a non issue as long as it keeps changing

[wc326]

Originally Posted by Apocalypsee

Nope there isn't any burn in on my screen by the look of it. I usually play fullscreen games and videos so its a non issue as long as it keeps changing

you can notice it easier with full blue or grey screen.

because those 2 color are fastest to burn out