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DC dimming explanation

  1. molanka
    Gingerbread Jun 4, 2019

    molanka , Jun 4, 2019 :
    What is exactly DC diming ? I'm not understand this function instead of reduce brightness.
     

    #1
    Linxx likes this.
  2. KeepTransisting
    The Lab - OnePlus 7 Pro Reviewer Jun 4, 2019

    KeepTransisting , Jun 4, 2019 :
    DC dimming essentially lowers the actual amount of power going to the display at lower brightness levels. This should give an improvement in battery life. It has no effect at high brightness levels.
     

    #2
  3. molanka
    Gingerbread Jun 4, 2019

    molanka , Jun 4, 2019 :
    so if I understand it's only for battery improving in specific case?
     

    #3
  4. KeepTransisting
    The Lab - OnePlus 7 Pro Reviewer Jun 4, 2019

    KeepTransisting , Jun 4, 2019 :
    Pretty much.
     

    #4
    LightRStar likes this.
  5. Gav_W86
    Starting Point Expert Jun 4, 2019

    Gav_W86 , Jun 4, 2019 :
    not battery related. it is to do with how the display changes brightness. with AMOLED screens some people can see a flickering effect at the lowest brightness levels, DC dimming uses a different method which should avoid the flicker. It can though cause colour issues.
    https://www.gizmochina.com/2019/04/03/what-is-dc-dimming-why-its-important-for-amoled-smartphones/
     

    #5
  6. KeepTransisting
    The Lab - OnePlus 7 Pro Reviewer Jun 4, 2019


    #6
    LightRStar likes this.
  7. molanka
    Gingerbread Jun 4, 2019


    #7
  8. mainstain
    Donut Jun 4, 2019

    mainstain , Jun 4, 2019 :
    Opinion or fact? Got any references?
     

    #8
  9. dibon
    Froyo Jun 5, 2019

    dibon , Jun 5, 2019 :
    basically displays brightness can be controlled by PWM (pulse width modulation) but some sensitive people can see flickering effect and controlled by DC (direct current) with no flickering. PWM is changing width of each impulse and DC is changing values of voltage and current.
     

    #9
  10. G_Ben_rGwn
    Eclair Jun 5, 2019


    #10
  11. Crayon22334
    Cupcake Jun 6, 2019

    Crayon22334 , Jun 6, 2019 :
    There are two different dimming modes. One is PMW, the other is DC. All the Oled screen is originally designed for PMW including s10 IP xs Max. However there is a popular assumption about the potential harm caused to user's eyes from PMW. Hence, phone companies try to switch to DC by adjusting their OS.
     

    #11
    sudheervenkata likes this.
  12. G_Mikko_UuTb
    Cupcake Jul 11, 2019

    G_Mikko_UuTb , Jul 11, 2019 :
    It is not an assumption of potential harm. It is a fact that many people get bloodshot eyes and some ger migraines from PWM. I am one of those who get bloodshot eyes within 30 min of using any PWM controlled display. It is also nothing psychological, like EMF sensitivity as this can be blind tested with displays where PWM starts at 99% brightness, but is not present at 100%. Immediately if the brightness is set 99%, anyone can observe my eyes getting red, but obviously I cannot tell if the display is at 99 or 100 brightness except by the irritation that the PWM flickering causes at 99%
     

    #12
    Linxx likes this.
  13. RonanJhinVorakoumane
    Donut Jul 26, 2019

    RonanJhinVorakoumane , Jul 26, 2019 :
    Starting to be very pissed how the **** does one enable or disable this feature? I see it nowhere in options.
     

    #13
  14. igen
    Gingerbread Jul 26, 2019

    igen , Jul 26, 2019 :
    Relax
    Settings->Utilities->Oneplus Laboratory
     

    #14
    FifteenWheat061 and Ven96 like this.
  15. M1530575643461
    Eclair Aug 14, 2019

    M1530575643461 , Aug 14, 2019 :
    I just got the update enabling this setting on my OP6, is it normal that it makes the whole right hand side of the screen brighter? It's like the old backlight uniformity issues of LCD screens too distracting for me to use as it is now..
     

    #15
  16. DuckAlert Beats
    Cupcake Sep 3, 2019

    DuckAlert Beats , Sep 3, 2019 :
    Man, recently updated, have this option turned OFF, and... Well I've lost a general vibrancy, it almost looks like the phone has lower nits now and far less white whites, less 'glowy' colours at max brightness.
    I can't reverse this! I loved this 6t screen, only got one a couple of months ago.. flowing live wallpapers, games, videos all looked amazing and really jumped out the screen!

    Now it feels like it's lost about 20\30% of that!

    I've sent a support request even, it seems too coincidental right after an update with DC Dimming. I tried it once, then went back to normal, and since then I've lost vibrancy, really noticably too even in a fairly dark room where it used to positively glow!

    It's just not the same as that now! ;(


    I've double checked everything, even startup mode cache cleared etc, nothing. Haven't tried a factory reset yet.

    I'm all about screens, always have been, I can see a change from miles off, always been a bit of a nerd like that with devices, so I'm not imagining this at all

    I'm panicking slightly actually cos it feels like I've really lost something about this phone I loved!

    Anyone, any thoughts on this hugely appreciated!

    Thanks!
     

    #16
  17. venkat.damacharla2007
    Cupcake Dec 23, 2019


    #17