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AMOLED vs. TFT LCD

Discussion in 'Android Devices' started by ttype86, Feb 11, 2010.

  1. ttype86

    ttype86 Newbie
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    Can u tech guys please explain the major differences in the 2 screens? (amoled and tft) I realize the amoled is brighter, better angle viewing etc... the main problem im having understanding is that some people are saying there is minor lag on the amoled screens compared to the tft lcd screen. and then another site will say the exact opposite. please explain.:thinking:
     

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  2. Rusty

    Rusty Android Expert
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    AMOLED screens still have a TFT layer, you want to know the differences between AMOLED and LCD screens ;)

    In a nutshell, LCD screens require a backlight, whereas AMOLED screens provide their own light (being built from LED's and all that)
     
  3. Covert_Death

    Covert_Death Android Expert
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    on amoled, each pixel controls it's own color/brightness, since it is an individual LED, so black on AMOLED is an off pixel technically, on LCD black still has a light behind it. basically colors are more rich and vibrant on AMOLED
     
  4. adamlovesu

    adamlovesu Well-Known Member
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    amoled screens use the pixels to light the screen.
     
  5. mi_canuck

    mi_canuck Android Expert
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    amoleds also have a unique glow to them... strong on cyans and oranges it seems...
     
  6. cyberbob25

    cyberbob25 Well-Known Member
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    Also, because of not needing a backlight, amoled has a lower battery draw than an lcd.
     
  7. Fatal Exception

    Fatal Exception Well-Known Member
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    Next question... why cant I have an OMOLED TV?
     
  8. Rusty

    Rusty Android Expert
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    Because you can't afford one.
     
  9. Fatal Exception

    Fatal Exception Well-Known Member
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  10. Germwise

    Germwise Android Enthusiast
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    a small 19 inch sony TV using AMOLED a couple years back was something like 11k.

    Now its a few thousand. Making big amoled screens is expensive!
     
  11. konman795

    konman795 Member
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    lol, that made me laugh...so true though
     
  12. bvalentine

    bvalentine Lurker
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    In my opinion, this is the most important difference between the Samsung Galaxy S and the HTC EVO 4g. I'm concerned about the power consumption of that tft display on the EVO. Still hesitantly leaning toward the EVO for 4g and HTC though. I've had a couple of samsung phones and respect their durability but having their own os and being new to android, I'm guessing HTC is safer bet.
     
  13. RogerPodacter

    RogerPodacter Well-Known Member
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    there is no lag. actually AMOLED is actually faster refresh rate than LCD. at least that's what i've read on all the sites and wikipedia article.
     
  14. Rusty

    Rusty Android Expert
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    An LCD screen will outlast an AMOLED screen though.
     
  15. bvalentine

    bvalentine Lurker
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    How long do AMOLED screens last? What kind of problems show up?
     
  16. Rusty

    Rusty Android Expert
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    Think it's less than half the length of an LCD's life, and they also suffer burn-in.
     
  17. crabman

    crabman Well-Known Member
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  18. Roze

    Roze Hiding behind a mystery
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    Where the Sakura grows
    Most people...especially the ones that use this forum will have gotten new phones before that even happens.
     
  19. crabman

    crabman Well-Known Member
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    Lifespan is only considered an issue on AMOLED with televisions and other applications where expected lifespan is far greater than a cell phone and the expected daily usage is many times higher. Mobile handsets are much shorter lived with a fraction of the daily screen time. In this application the screen should last several times the lifespan of a handset even for those that sit on a phone for years. This is often brought up on the phone sites as being an issue with AMOLED but the reality is it simply doesnt apply to mobile handsets. Sorry about not being clear the first time.
     
    kumarvarun172 likes this.
  20. incredadroid

    incredadroid Lurker
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    thank you all for your insight. I was searching for the answers provided here without having to search through 1000's of threads giving contradicting information leaving me with the same confused look i had when I started
     
  21. MartinS

    MartinS Android Expert
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    So my notification bar has started to burn (or Ghost?) into the screen. I guess I'm a heavy user as I use Google Nav...
     
  22. snakeybidder

    snakeybidder Well-Known Member
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    By the way you can buy a samsung 1080p 55" 3d amoled tv for
     
  23. Mostly Harmless

    Mostly Harmless Android Expert
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    Wow you are already getting burn in with the nofitication bar? How often are you using the Google Navigation and for what duration? I just got the google N1 car dock (which is pretty nice) last week and was using google nav over the weekend, the first thing that came to my mind was how long can I run this safely? Might only break it out now when I really need it.
     
  24. MartinS

    MartinS Android Expert
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    I use it on average 3 days a week as my main Sat Nav. I have used it since Nav came out in the UK (around a month?) and the screen is usually at around 50% brightness in the car. I guess some days it can be on for around 4 hours in the car depending on where I travel for work. I have now begun to switch off the screen when I know where I'm going on main roads etc and only use the Nav to guide to my final destination.

    I have had the phone since January which makes it 5 months old now. I would say that before Nav came to the UK I used the phone as many people would use any smartphone. The screen has rarely been used at 100% (only when in direct sunlight) and normally at around 50% for all generall use. I'm using a launcher which hides the bar, but as soon as you browse the web, use maps/nav and other apps the notification bar shows up again.

    I'm quite annoyed by this and would go so far as to say that the screen is not fit for purpose.

    Anyway, It's becoming more of a recognised problem:

    Screen Burn-In - Android Help
     
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  25. Mostly Harmless

    Mostly Harmless Android Expert
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    Thanks Martin, this is good information. I don't think I would use it nearly that much (I don't travel that much) but it's good to know (at the cost of your phone) that it can occur with prolong periods of time. Hopefully once in a while won't hurt it that much.
     
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