Quoting Sven Hartge (s...@svenhartge.de): > Bob Proulx <b...@proulx.com> wrote: > > Gary Roach wrote: > > >> I bow to your experience but, for the life of me, I can't see how > >> this could happen with the physics that is involved. I suppose that > >> the liquid crystal material could deteriorate with time but I thought > >> that the stuff was pretty indestructible.
Its mortal enemy is DC voltages being applied. Badly designed circuits can result in an AC imbalance when being overdriven. > > It doesn't make sense to me either but I will add that I have seen the > > "screen burn" effect with LCD displays too. I don't know. I can't > > explain it. I can only report that I have seen it too. > > I guess it has to do with the crystals being no longer able to bend all > the way after a time if they are forced to do so because the pixel is > constantly active. Some explanations and cures at http://en.wikipedia.org/wiki/Image_persistence http://compreviews.about.com/od/monitors/a/LCDBurnIn.htm I think this is different from the burn-in you can get with high-intensity projective displays where the damage results from UV light affecting the optically polarizing layers bonded to the LCDs. Cheers, David. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150429225624.GA16973@alum
