Originally Posted by mcbiidermen
I have read that black bars can eventually cause burn in, but I am hoping this applies to older Plasmas, and a lot of the time people tend to blow things out of proportion so I wanted to ask around for peoples' personal experiences with plasma.
Originally Posted by threephi
About black bars--I'm still learning about how plasma works, but is the concern that it might lead to strong IR or burn-in?
If you watch movies with an aspect ratio of 2.35:1 there are black bars at the top and bottom of the screen. There is no phosphor reacting in those black bars so the phosphor doesn't age. With age, phosphors slowly lose brightness. If you watched nothing but 2.35:1 aspect ratio movies for a year, the phosphors in the black bars would still be brand new, and the phosphors in the center of the screen would be one year old. At some point if you changed to watching a 1:78:1 (16x9) movie you might
notice that the image was a bit brighter top and bottom than in the center.
If on the other hand you keep your display on ESPN 24/7 for a year or more, there would be fixed images burned into the phosphors by the ESPN logo, the ESPN ticker, and to some extent the ESPN pattern that they use when then run 1:33:1 (4x3) SD material on their HDTV channel. That's burn-in that you probably couldn't get rid of.
Or that running a big section of the screen dark for too long will differentially age the phosphor coating to the extent you can see a difference?
True, but I don't want to test for how long "too long" is.
We just mix what we watch. In our case I don't need to keep track because there is enough natural variety in what we watch.
When I was playing around with the set last night exploring some of the 3D options, I saw some prominent IR for the first time. It came up because I paused the blu-ray movie I was watching on the final credits and spent perhaps ten or fifteen minutes navigating the blu-ray player's settings and options menu. When I exited those screens and came back to the credits, I saw faint but noticeable IR against the almost completely black screen. I ran the built-in "scrolling bars" anti-IR feature for about two minutes and it completely cleared up so thumbs up for that feature.
So you caused Image Retention (IR) and as it should, it went away easily.
If you had left your display like that and went off to Maui for a long time, you would have probably come home to burn-in.