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AMOLED: Black wallpaper = Battery saved?

Discussion in 'Android Devices' started by Quazar, Apr 3, 2010.

  1. Quazar

    Quazar Android Enthusiast
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    With OLED, does a black or dark wallpaper mean battery life is saved? Or is it the same as LCD where any colour uses the same power.

    Thanks
     

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  2. nx1977

    nx1977 Android Expert
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    No, AMOLED needs a pixel to be powered all the time, unlike LCD where blacks come from turning the pixel off.

    So you'll use the same power, no matter the colour. Only Brightness level will have an effect on battery usage.
     
  3. smellyfungus

    smellyfungus Newbie
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    isnt that the opposite. lcds always need the backlight but since amoleds have individually powered pixels they can turn off to display true blacks.
     
  4. grainysand

    grainysand Android Expert
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    You've got that backward.
     
  5. Quazar

    Quazar Android Enthusiast
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    So dark background = saved battery?
     
  6. Eazail70x7

    Eazail70x7 Android Expert
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    I am currently using the open home hero theme. The default wall paper with that theme has a black background :)
     
  7. nx1977

    nx1977 Android Expert
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    :eek:
    Oops. So I have.
     
  8. Yenzehn

    Yenzehn Android Enthusiast
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    MasterYoda_82 and Quazar like this.
  9. Quazar

    Quazar Android Enthusiast
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  10. Yenzehn

    Yenzehn Android Enthusiast
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    Yes.

    And white is really, really bad(since all subpixels have to be turned on).
     
  11. Quazar

    Quazar Android Enthusiast
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    Interesting, wonder what effect it would have on a days usage having a light background, and having a dark one.
     
  12. lekky

    lekky Lover
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    Luckily I love dark backgrounds!
     
  13. Quboid

    Quboid Android Enthusiast
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    Interesting thought. Maybe someone will benchmark it to see how much difference there is in real terms.

    I guess a live background of snow falling on the ground is really a bad idea (live backgrounds sound like a battery hog to me).
     
  14. gogol

    gogol Well-Known Member
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    Yes, black (color #000000) background will definitely save your battery.

    Organic LED - Wikipedia, the free encyclopedia

     

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  15. antipesto93

    antipesto93 Android Enthusiast
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    +1 !! i love the nexus one live wallpaper...allways amazes people when they see it:)
     
  16. lekky

    lekky Lover
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    search he market for nexusmod live wallpaper, its the same but you can change the colours!
     
  17. gogol

    gogol Well-Known Member
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    Updated my post above to show AMOLED power saving on different kind of background images.
     
  18. Yenzehn

    Yenzehn Android Enthusiast
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    Gogol, did you test the read of the posts before your own?
     
  19. antipesto93

    antipesto93 Android Enthusiast
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    nice, is 20k hours lifespan of the screen a long time? how many years is this?
     
  20. Yenzehn

    Yenzehn Android Enthusiast
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    That depends entirely on how much you use the phone.

    If the phone screen is on for one hour every day, that is 20k days =~ 55 years, divide by the number of hours you've got your phone screen on every day.. I think you will still be fine.
     
  21. grainysand

    grainysand Android Expert
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    At 9 hours with the screen on per day, it appears it'll last about 6 years (mine's not on for that long, just exaggerating "just in case"), which is still fair enough given that I'm not likely to keep mine for six years.
     
  22. Lukehluke

    Lukehluke Android Expert
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    I like some of the default backgrounds but I might amaze people with the moving ones :p
     
  23. gogol

    gogol Well-Known Member
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    I made screenshots of the statistics and attached to my post for easy reading :) Oh yes, I admit, I did not look yours, but I searched the web after I saw the same screenshot from user Irkan post in XDA-dev forum.

     
  24. gogol

    gogol Well-Known Member
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    Quazar likes this.
  25. TimMatrix

    TimMatrix Member
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    Is it OK to leave AMOLED on all the time, while on a charger? I mean, maybe as a night clock by my bedside? Will this affect the lifespan of the AMOLED display (burn-in problems?)
     
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