So Samsung claims they have a 1080p 441ppi screen but the first macro pics we can see (like here) shows a new kind of pentile arrangement which leaves some interrogation.
If the green subpixels are on par with an RGB matrix, then the Red and Blue are now shared vertically and horizontally?
This would mean the subpixels ratio vs a RGB panel would be even lower than on the SGS3, and in fact closer to 720p.
Or, as the picture can't tell us much about the real scaling, is it working diagonally in a more acceptable way? else, are 2 Green subpixels always activated together?
What is the real subpixels number?
We don't know any of this until somebody will do an actual controlled 1:1 comparison between an LCD and the new screen.
The closest things we have is this; as you linked:
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Now, the font style is not the same. The background is not the same colour.
However, is is roughly a comparison at almost the same size. However, here's the kicker: There is no actual loss in edge sharpness.
The notion of a physical pixel doesn't seem to exist here anymore, and we see PenTile in what I believe is its first implementation with no disadvantages.
We should by all means see the RGB subpixels at that resolution but I need to zoom in another 250% for me to actually see them, at normal distance I actually see fake white pixels in the character, at the same resolution as the Xperia Z.
If the font style weren't different, then I imagine the illusion to be complete, as for example the horizontal bar in the middle of the character seems to be about ~34 pixels wide on both images, and you can actually overlay an imaginary resolution grid over both and it would overlap the same.
The only case where this won't work is when there are edges of high contrast of between exactly two logical pixels.
In any case, very interesting layout they did with the new screen.
I agree this is probably good enough and an improvement in everyday use.
On the "no disadvantage" part I'm not really sure.
I mean, if the end result is quite similar to a 720p rgb matrix, the GPU will still have to work with a 1080p "internal" resolution for fine details actually lost on screen.
That's where I doubt this is the best they could have done. I feel like they made this choice to market a 1080p screen while a standard matrix 720p could have been a wiser choice on a performance point.
But they had to make this "long blue subpixel" for the Note2 in a 5.5" diagonal, their technology perhaps wasn't ready (or too costly) for doing the same in 5".
Anyway, it will be interesting to see better comparison, especially vs another 720p device with better reference pictures.
Related
I have been considering a mostly black wallpaper in order to save power on my tab. After reading this post i want to look into the actual benefits of saving a small percentage of juice under my conditions (sometimes i just sit around flickincking between homescreens like an idiot)...
Theres a great chart at that post from ars technica:
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Im gessing there is no benefit for the tabs display but what the hell?
Maybe its worth giving this a little test. What do you suggest? two 10 minute runs on 100% brightness, one pure black one pure white? maybe a gray as well?
SGT as opposed to SGS is not equipped with any type of OLED screen but regular LCD. Therefore black would be very power consuming color.
Khisha said:
SGT as opposed to SGS is not equipped with any type of OLED screen but regular LCD. Therefore black would be very power consuming color.
Click to expand...
Click to collapse
So you would think - but judging by the chart the difference in power consumption is minuscule!
My fault. LCD almost careless about this today. Perhaps I had plasma on my mind.
bump - still interesting
Khisha said:
SGT as opposed to SGS is not equipped with any type of OLED screen but regular LCD. Therefore black would be very power consuming color.
Click to expand...
Click to collapse
Only when compared to an OLED screen!
With a regular LCD, it won't make a blind bit of difference because it's the backlight which is draining the power and it's always on anyway when the screen is on, regardless of what is actually being displayed.
Regards,
Dave
EDIT - just realized this thread is 20 days old and so I shouldn't have bothered posting!
Bump - i for got how interesting that image in the first post is
Bump - may still be interesting for many people!
Interesting for many people that have an OLED screen...Galaxy Tab does not have OLED. This scientific american article (from 2007) claims that white saves more energy on most LCD displays.
It depends on the 'rest state' of the LCD that is in the Galaxy Tab which would be more efficient, white or black, and according to other tests that i have seen the savings would be negligible compared to the cost of backlight operation.
Want to save battery on your Tab?
1. Dim your display.
2. Turn off unnecessary comms, 3g/wifi/gps.
3. Turn off haptic feedback.
4. Use less apps that run in the background.
5. Use longer intervals for apps that auto-refresh.
The list goes on and on, and in the end only 2 or 3 things are really going to make a difference for each person. If you sit and stare at your background all the time, then making it white or black probably will save you battery because you will not be staring at it any more.
beestee said:
This scientific American article (from 2007) claims that white saves more energy on most LCD displays.
Click to expand...
Click to collapse
According to the original research illustrated in the header picture, there is little to no difference between light colors...
This is indeed interesting... Thanks for sharing!
You know what's something I always thought would be amazing? What is Samsung has a secret weapon already in deployment (as far as screen technology goes)? What if that secret weapon is SAMOLED+?
Think about it... Regular SAMOLED (and HD SAMOLED in the GNexus and Note) uses PenTile, which has 8 sub-pixels per pixel (4 green, and 2 each blue and red)... However, SAMOLED+ is true RGB, and actually uses 12 sub-pixels per pixel. So on SAMOLED+, that's 4 red, 4 green, and 4 blue for each single pixel. Let that sink in for a moment... Most ordinary RGB displays only have 3 sub-pixels per pixel. 1 each of red, green, and blue...
Have a look at this picture to see what I mean:
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Can you guess where I'm going with this yet?
Essentially, Samsung already has better-than-retina AMOLED displays already out in the wild, if they were to use the traditional 3 RGB sub-pixels instead of 12. What if it's only a matter of releasing a firmware update to such equipped devices, so that they effectively quadruple their screen resolutions by addressing 3 sub-pixels per pixel instead of 12?
Let me draw a diagram to clarify...
Traditional RGB pixel/sub-pixel arrangement:
|||
3 sub-pixels, 1 pixel.
SAMOLED+ pixel/sub-pixel arrangement (also viewable in the image above):
||||||
||||||
12 sub-pixels, 1 pixel.
As you can see, one SAMOLED+ pixel is essentially a cluster of 4 traditional RGB pixels. So, bearing that in mind, couldn't Samsung just quadruple their resolution by addressing existing SAMOLED+ sub-pixels the same way as traditional RGB (3 sub-pixels per pixel), instead of 12 sub-pixels per pixel?
That would be totally awesome!!!
I could just see it now:
Apple announces their iPad3, and how it has quadruple the resolution of the outgoing generation. The Apple crowd goes "Woo, yay..." while everyone else goes "Damn... I wish my screen were that nice..."
Then Samsung comes out "Hey guys! You know how awesome your SAMOLED+ displays are? You want higher resolution? Well, guess what, you've already got it! Here's a firmware update for ya! *boom!!* Quadruple your old resolution!! You're welcome! "
Apple: "WTF!? Seriously? Foiled again!! Damn you Samsuuuuuuuung!!!!"
Isn't it the other way round? Why would you decrease the subpixel amount from 12 to 3?
The pixels would be bigger.
And how do you want to change the color of a subpixel via firmaware?
I think he is saying the 12 pixel structure in the photo shows 4 groups of RGB subpixels,
so why use all for a single pixel , how about using them as 4 pixels...
Ah now i get it.
I tought Samsung already uses it as 4 pixels.
That makes sense.
Polarfuchs said:
Ah now i get it.
I tought Samsung already uses it as 4 pixels.
That makes sense.
Click to expand...
Click to collapse
Edit: Moved response and explanation to OP.
I was interested in the 7.7 and has tested it in several stores. There are two things that puts me off that I haven't seen anybody talk about.
1. The white is quite yellow. Compared to an ipad 2 or 3 or asus transformer, it looks much worse, and not so bright.
2. The resolution is supposedly good, but then why does the text looks so bad? I mean open the browser, and when it says Cannot connect to the internet page or something like this, that font looks not good. I also think the font saying Google search in the upper left corner also does not look good.
Is this just me seeing this? (same on many 7.7 devices i have tested).
I couldn't quite helping you with the yellowish issue, but if anyone had problem with the default fonts, there is an app called 'Fontomizer SP', which is a fonts package for Samsung Galaxy devices, that offers a list of additional fonts that you could choose from with preview.
nick5000 said:
I was interested in the 7.7 and has tested it in several stores. There are two things that puts me off that I haven't seen anybody talk about.
1. The white is quite yellow. Compared to an ipad 2 or 3 or asus transformer, it looks much worse, and not so bright.
2. The resolution is supposedly good, but then why does the text looks so bad? I mean open the browser, and when it says Cannot connect to the internet page or something like this, that font looks not good. I also think the font saying Google search in the upper left corner also does not look good.
Is this just me seeing this? (same on many 7.7 devices i have tested).
Click to expand...
Click to collapse
The display on the 7.7 using Super Amoled Plus is regarded as one of the best by most people and I've seen several 7.7 screens and the text and colours all look great. But, as always it is a matter of personal taste. I don't like the 4:3 screen ratio on the iPad which is bad for viewing wide screen films and it is too big to fit in pockets which is why I bought the 7.7. So if you don't mind watching films with black bands at the top and bottom and using a bag to carry the iPad around then get that.
ok, so it's only me then.
I was curious if anybody else notice these things.
Could it be related to font smoothing?
On my galaxy note the text looks good, but it has a higher DPI. But I can't understand it should be related to higher DPI as the 7.7 already has quite high DPI.
There are 3 modes under screen settings, dynamic (which I use for color theory experiments), normal (which I use for daily use), and movie (which i rarely use). Movie mode does appear yellowish, photos are over-saturated in dynamic mode.... try adjusting these and see if you get better results.
here's an "amoled doodle" I did playing around with rgb (additive color primaries) and cmy (subtractive color primaries):
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Hi all,
I've had my 6p for almost two weeks and tomorrow is my last day to return it. They will not extend buyer's remorse to a replacement unit so before tomorrow I need to decide if the issue I have is specific to my unit (get a replacement) or related to the AMOLED panel used on this phone (cancel).
The issue is that colors seem not to converge correctly, just like old CRT screens would. This is most noticeable on high contrast borders such as black text on light backgrounds, which my brain interprets as embossed text rather than nice flat text. Below is a zoomed in example showing this issue, upper borders are reddish/darker and lower ones are greenish/bright.
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Anyone else seeing this? my friend's S5 has a similar thing but way less noticeable and i could probably live with it, whereas my 6p is probably too much. Yes this is my first AMOLED.
Thoughts? thanks!
Alelanza said:
Hi all,
I've had my 6p for almost two weeks and tomorrow is my last day to return it. They will not extend buyer's remorse to a replacement unit so before tomorrow I need to decide if the issue I have is specific to my unit (get a replacement) or related to the AMOLED panel used on this phone (cancel).
The issue is that colors seem not to converge correctly, just like old CRT screens would. This is most noticeable on high contrast borders such as black text on light backgrounds, which my brain interprets as embossed text rather than nice flat text. Below is a zoomed in example showing this issue, upper borders are reddish/darker and lower ones are greenish/bright.
Anyone else seeing this? my friend's S5 has a similar thing but way less noticeable and i could probably live with it, whereas my 6p is probably too much. Yes this is my first AMOLED.
Thoughts? thanks!
Click to expand...
Click to collapse
You are joking? Right?
That image is blown up how much??
400%. Otherwise you wouldn't see it on a forum, but real life you can see it with no need to zoom
Feature, not bug:
https://en.wikipedia.org/wiki/Subpixel_rendering
I have a wifi US S5E a couple weeks now. I like dark mode and use it wherever it's available. But as you know, dark mode doesn't necessarily mean black background but dark gray backgrounds, and one noticed some uniformity problems. So I finally pulled up a gray test pattern and yep it's pretty ugly
Here's the S5E (right) next to my 6 year old original first gen tab S, displaying this video. Brightness is set to around 33% on both.
https://youtu.be/Qi4Wy7vE8-o
Like all OLEDs the S isn't perfect, but you can see the S5E is worse, almost like a gradient, grey on one side, black on the other side. Also, while the S is grey like it's supposed to, the 5e has a purple tint to it. The tint is exaggerated somewhat by the camera, but it's there in real life too. I never notice anything amiss with the S display on regular content, but the 5e uniformity definitely sticks out from time to time, especially in the evening.
So I'm wondering, do I have particularly bad uniformity or is this par for the course? Kind of disappointing that my spanky new tablet has in some ways a worse display than one that's ready to croak.
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The display on my Tab S5e is not bad
barth2 said:
I have a wifi US S5E a couple weeks now. I like dark mode and use it wherever it's available. But as you know, dark mode doesn't necessarily mean black background but dark gray backgrounds, and one noticed some uniformity problems. So I finally pulled up a gray test pattern and yep it's pretty ugly
Here's the S5E (right) next to my 6 year old original first gen tab S, displaying this video. Brightness is set to around 33% on both.
Like all OLEDs the S isn't perfect, but you can see the S5E is worse, almost like a gradient, grey on one side, black on the other side. Also, while the S is grey like it's supposed to, the 5e has a purple tint to it. The tint is exaggerated somewhat by the camera, but it's there in real life too. I never notice anything amiss with the S display on regular content, but the 5e uniformity definitely sticks out from time to time, especially in the evening.
So I'm wondering, do I have particularly bad uniformity or is this par for the course? Kind of disappointing that my spanky new tablet has in some ways a worse display than one that's ready to croak.
Click to expand...
Click to collapse
I suffer from poor uniformity too. Maybe not as bad as in your case, but clearly visible. I read that the bigger OLED screen is, the higher probability of suche issue. I was thinking about sending it back to get refund or exchange, but since I bought it abroad, I finally gave up on the idea. And you know what? After few months I almost forgot about it ? It's possible to get used to it
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