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A New Chapter for MagicMirror: The Community Takes the Lead
Read the statement by Michael Teeuw here.

LED display shines through

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  • M Offline
    maiky09
    last edited by May 21, 2019, 1:04 AM

    Did someone find any soltion. PLEASE HELP US…

    1 Reply Last reply Reply Quote 0
    • B Offline
      bhepler Module Developer
      last edited by May 21, 2019, 3:45 AM

      Unfortunately, I think your only options are to either 1) replace the glass with a type that doesn’t transmit as much light through it (lower % rating) or 2) replace the monitor with a better quality one.

      M 1 Reply Last reply May 21, 2019, 11:45 AM Reply Quote 0
      • M Offline
        maiky09 @bhepler
        last edited by May 21, 2019, 11:45 AM

        @bhepler Thanks for the reply. That’s right, I’ll have to change the monitor. Can you give me some specifications to keep in mind when buying the monitor?

        ? 1 Reply Last reply May 21, 2019, 12:28 PM Reply Quote 0
        • ? Offline
          A Former User @maiky09
          last edited by A Former User May 21, 2019, 12:31 PM May 21, 2019, 12:28 PM

          @maiky09
          LP156WH2 insists 200nits as brightness, but usual LED panels also have 200~250nits. You need to choice higher contrast than LP156WH2(1:400).
          Of course, There could be nicer panels - By example, Apple - 500nits, 1:1350 Lenovo X1 Extreme(1G) UHD - 500 nits, 1:1414. You can compare those values as reference which panel you will buy.
          WARNING RPI can only handle up to FHD(1920*1080). So above panels mentioned are useless for RPI
          Anyway the absolute answer will be OLED panel, it could give a real Black. Unfortunately that is still too expensive for MM.

          M 2 Replies Last reply May 21, 2019, 12:35 PM Reply Quote 0
          • M Offline
            maiky09 @Guest
            last edited by May 21, 2019, 12:35 PM

            @Sean Thank you very much for your reply. Wou this makes me more difficult and more expensive.

            S 1 Reply Last reply May 21, 2019, 1:12 PM Reply Quote 0
            • S Offline
              Serge
              last edited by Serge May 21, 2019, 1:12 PM May 21, 2019, 1:10 PM

              This post is deleted!
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              • S Offline
                Serge @maiky09
                last edited by May 21, 2019, 1:12 PM

                @maiky09 I have found that displays made with PLS technology emit better “dark” color as compared to displays made based on the IPS (and TFT) technology. Think about it.

                ? 1 Reply Last reply May 21, 2019, 1:39 PM Reply Quote 0
                • ? Offline
                  A Former User @Serge
                  last edited by A Former User May 21, 2019, 1:47 PM May 21, 2019, 1:39 PM

                  @Serge @maiky09

                  • PLS and IPS are almost same… SAMSUNG call their IPS as PLS rather than LG call theirs IPS. Due to patent, SAMSUNG cannot use the word IPS. both two are slightly different but almost same.

                  • If you want to get more high contrast ratio, consider VA panel. There be various - MVA, PVA/S-PVA, A-MVA/A-MVA+ but almost same too. (AH-VA is some kind of IPS. Don’t be confused.)

                    • The cons of VA panel - late response speed. afterimage would happen. So it rarely be adopted as screen of notebook.(and duralibility issue)
                      Anyway, usually we don’t use MM as movie player, so it might not be the issue.
                    • The pros of VA panel - Cheap, low light leak, darker black, higher contrast (than IPS)
                    • contrast ratio of VA is usually 1:3000 ~ 1:5000 while IPS usually be 1:1000.
                  • There is another option TN panel. High latency is good point but somehow useless for MM. color is not correct by angle.

                  But remember; the higher(expensive) of type A is better than the lower(cheap) of type B always.

                  S M 2 Replies Last reply May 21, 2019, 1:57 PM Reply Quote 0
                  • S Offline
                    Serge @Guest
                    last edited by May 21, 2019, 1:57 PM

                    @Sean said in LED display shines through:

                    VA

                    sorry for misunderstanding.
                    I kept in mind and thought about VA but typed PLS.
                    Of course the diff in IPS and VA is visible especially in dark color, due to the higher contrast in the last one.
                    You are right.
                    Late response speed is not an issues for MM projects I think.

                    1 Reply Last reply Reply Quote 1
                    • M Offline
                      maiky09 @Guest
                      last edited by May 21, 2019, 2:09 PM

                      @Sean Thank you very much for that info. I need a monitor between 17 to 19 inches. I’ll see if I can find something.

                      1 Reply Last reply Reply Quote 0
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