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General qHD (960x540) vs. WVGA (800 x 480) - IMPORTANT!?

Discussion in 'Android Devices' started by MX251088, Apr 20, 2011.

  1. BlueBiker

    BlueBiker Android Expert
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    Good points. Legible text is the bottom line, and if it's fuzzy then I won't want to use it at length even if it has lighter battery usage. But IIRC Microsoft's ClearType (their LCD anti-aliasing method) initially had people worried about fuzzy text, while nobody complains now.

    I'm not sure that pentile will be better for graphics and images though. The Atrix uses RGBW, which may give good brightness at the expense of not very vivid colors. I'm actually waiting for the Bionic, and I'm not sure anybody knows what panel technology it's using.
     

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  2. Quboid

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    ClearType is excellent, but has a key difference to Pentile. Pentile shares subpixels all the time, whereas ClearType uses subpixels only when there is a reason to and on an applicable LCD screen, results in very smooth text (or, you could say, very clear type). I don't believe Pentile is ever better than RGB subpixels per pixel, for text or graphics. Even if it smooths photos, it won't smooth them in an accurate manner.

    However, I have to look closely to actually see any fuzziness on my Desire's AM-OLED screen. On the SGS2's larger display of course I wouldn't have look as closely but it would still be slight. This is RGBG, I've never seen an RGBW Pentile display but I can see how it would be more efficient. OLED displays need quite a lot of power to render white as it means all subpixels are going full power so RGBW would use 1/4 of that (although the white subpixel might use more power ... this is getting complicated!).

    The SGS2's OLED display is supposed to use about 80% of the power of the SGS1's Pentile display so I'm not too worried about inefficiency. Unless there is a big difference, I'll take the full 3 subpixel matrix even if Pentile's fuzziness is also slight.
     
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  3. chocobosandwich

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    Both my Wave and my Galaxy S with SuperAMOLED and penTile were fuzzy. Or, better term, glowy. The edges were not well-defined, just sort of glowed and fuzzed. Like analog. You know when people buy gaming laptops, they usually pick the one with the lower resolution so they can run their games natively. Scaling and resizing on LCDs never look good, especially not for sharpness of text. The fuzzy-ness of CRT monitors compared to the sharpness of non-aliased text on LCDs is also why people get headaches way faster on a CRT and far prefer LCD, which they can look at for hours on end. PenTile sort of returns us back to analog days. A step back. Only real usefulness is playing back old SD content.
     
  4. BlueBiker

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    Audio codecs are designed to maximize quality and minimize space occupancy to take advantage of the fact that human hearing isn't equally sensitive to all frequencies. In a similar way, Pentile RGBG is supposed to capitalize on the eye's extra sensitivity to green.

    But from your experiences it sounds as if having enough usefully placed subpixels (sharpness) is way more important than overall color reproduction efficiency.
     
  5. Gearu

    Gearu Android Expert
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    Hmm I wonder if Sharp's Quattron screen tech would work well on a phone, maybe they will do that after they have finished fooling around with 3D screens (Nintendo's 3DS included) and Camera units.

    I would've liked to get a Sharp brand phone but for whatever reason they haven't made a move into the western market, but there might be clues from that, and perhaps from their business dealings with Nintendo they could collaborate again, Nintendo could make an OS for Sharp who will then do all the rest, and voila! presenting the Sharp NINja (with Quattron) lol :D

    Honestly, that would be a win for both companies so hmmm
     
  6. sandeep108

    sandeep108 Member
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    This is sort of what I found as well, when looking at Galaxy S or Nokia's N8 AMOLED screens. The LCDs of even a lower quality / spec phone were much sharper when it came to text.

    While again everybody is raving about the SGSII's AMOLED+, until I see it for myself, and compare it to HTC's qHD LCD, I will wait to take a plunge.
     
  7. Gearu

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  8. Binary110

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    I own a motorola Atrix. qHD is garbage beside my girlfriends HTC Desire Z, with its SLCD. the higher res makes things smaller, but doesn't make up for the "dottiness" that is apparent. Its less obvious of a pentile than on the original galaxy s with samoled. but its still obvious.

    The easy way to understand why its worse is because the colors are not side-by-side like in RGB, RGBW is bad news because you get 2 subpixels per pixel, thus lowering the effective resolution to 66% of 960x540 (640x360) and from my experience with the Atrix, I would say this is dead accurate.

    The worst part about it, is when watching movies. The screen is perfect resolution for scaling down 1080p, but the colors aren't accurate, and you end up with patches of color that look like it was a bad quality copy. blotches if you will. The problem is, these are full quality videos. and its even noticeable in youtube HD.

    It also causes contrast issues, as certain colors arent able to be reproduced in this pattern, and it causes video to change in steppings instead of smooth transitions. there are roughly 3 shades of skin tone on this phone, and thats it.

    Pentile is a deal-breaker for me from this point on. i didn't realize this thing came with a pentile display, and for that reason alone, i wouldn't have bought it.
     
  9. vengance007

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    wow! some people really know how to explain a resolution..... in detail :D. but all i can can add (if it hasnt been said already) is that at the moment android apps dont really support the qHD if they are... very few. i got the GS2 over the sensation. i refuse to give into sense 3.0!!! loool!
     
  10. BlueBiker

    BlueBiker Android Expert
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    Actually 960 x 540 x 2 RGBW pentile subpixels is equivalent to 784 x 441 x 3 conventional RGB subpixels, as they both have a total of about 1037000 subpixels.

    Yeah, I'm convinced too. I hope they release qHD screens using conventional RGB soon.
     
  11. 1ds

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    The only + we get from increased pixel density is when browsing desktop version of sites we get more readable text in low zoom levels and much resolved detail in small pics.
     
  12. jeroensaccount

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    I have a phone with same surface and resolution as the galaxy S2 and i'm looking for an upgrade but i'm a bit worried about the HTC Sensations qhd display because the two displays may be same size diagonally (4.3'') but on pictures the Sensations display seems a bit taller and less wide. i looooove the wideness my HTC HD2(with android 2.3) and i wouldnt want it to be less wide. A 4.3'' screen with a 3:5 aspect ratio is wider then a 4.3'' screen with a 9:16 and thus has a bigger surface.

    I also hope that the qhd aspect ratio won't stretch the icons or anything.

    Also, i've read something about qhd cutting peaces of images off and showing for example only (9:16)x5 : 5 = 2.81:5 of the originally 3:5 displayed images of android, if u get what i mean. i don't know how else to explain it.
     
  13. daivik

    daivik Android Enthusiast
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    If you a HTC fan I'm sure the Sensation will be fine, but it will be more thinner than wider. Personally I prefer the wider type, because although it's not 16:9, it still feels wider and much bigger. Hence why I think the iPhone's 3.5" doesn't really look that "small" as such.

    But about the PPI and pixel density. When you have the Super AMOLED Plus, even on the lowest brightness, the colours look so vibrant that pixel density doesn't matter. Oh course qHD is better, when you look through a microscope or a magnifying glass, but who actually does that?

    And in terms of apps, (I think), the last time I did a bit of forum browsing, they scaled/stretched quite well, and the odd apps had the black lines on the side - but this was about a month ago when the phone had only just been released.
     
  14. BlueBiker

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    Yes, the closer to square (a 1:1 ratio) a display is, the more surface area and total pixels for the same length diagonal.

    I can't answer this directly, but it's a software/OS issue, not hardware. It probably depends on how well each app is written, whether it cleanly scales icons/widgets/images or else stretches or cuts them off. I'm sure the default home screens and popular launchers will look fine.
     
  15. eclap

    eclap Member
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    Every pixel draws battery power at all times.even when displaying simple colours...
     
  16. BlueBiker

    BlueBiker Android Expert
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    Maybe, but that says nothing about all of the other considerations. In particular, a pentile display has fewer subpixels (and therefore transistors) per pixel, so it's not a surprise that it would consume correspondingly less power. And if the GPU draws a disproportionate amount of the overall power, then that consumption only occurs while GPU operations are happening.

    But back to my quote, yeah I've become convinced that the jagginess of pentile probably makes it a crummy choice for an e-reader.
     
  17. Shocky

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    Higher resolution is always welcome but just watch this video, theres also a part 2 if you need to see more.

    Screen on the Sensation is highly reflective so probably horrible in sunlight, whites look yellow, colours look washed out and less vibrant.

    qHD is great but not on a SLCD screen, need qHD OLED then we can do some real comparisions. :)

    YouTube - ‪HTC Sensation vs Samsung Galaxy S II "Face Off"‬‏
     
  18. ArmageddonX

    ArmageddonX Android Expert
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    That's your opinion... Display type preference is completely subjective.

    Here are some good posts on the subject:
    http://androidforums.com/htc-sensation/326740-sensation-vs-galaxy-s-ii.html#post2791639
    and
    http://androidforums.com/android-lounge/348809-wait-gs2-get-evo-3d.html#post2782397
     
  19. daivik

    daivik Android Enthusiast
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    Hopefully we'll be getting this by the end of this year or next year. Samsung should be in the process of upgrading their super amoled manufacturing line to using laser based methods which will allow them to manufacture screens that are 300 PPI plus. I know for me i could never go back to mere LCD.
     
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  20. ArmageddonX

    ArmageddonX Android Expert
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  21. pastafarian

    pastafarian Pâtes avec votre foie
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    Please keep the discussion civil!
     
  22. Shocky

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    Well that's your opinion, others can watch the video and decide for themselves.
     
  23. MX251088

    MX251088 Member
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    I agree with you... ;)
     
  24. sandeep108

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    I was sceptical of GS2's large screen at 480x800, but after seeing the screen, I am very impressed. The smallest of text is pin sharp, colours absolutely brilliant and contrast amazing. qHD may be theoretically more PPI, but this display sure is more than enough for me for now.
     
  25. FreakyLocz14

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    In qHD, some apps look distorted.
     

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