Originally Posted by Weboh
When my Plasma TV overheats, it gets burn-in and IR. This is relatively permanent, and can disappear with the fading of the TV. If I leave the air conditioning off, and crank the contrast too much, along with the briteness; I can get burn-in fast on my TC-P50UT50. Most of my burn-ins have been barely noticible. But like an itch, they get annoying. They are mostly very mild logo burns, which had alot of blue in white. I suspect blue is the most susceptible and short-lived color on a TV.
It's phosphers aging unevenly that causes burn in. You're talking about changes at a molecular level not necessarily changes that we can perceive has heat.
OLED has issues but I remember when the BBY store I worked at got their first plasma. It was relatively small, had a relatively flat picture without much contrast and if I remember right it was rated for something like 10,000 hours? It suffered from IR/Burn In without much work...we had several returned and our demo had burned in a logo that wasn't even permanent in the material within a week. They still sold to the high end guys that just had to have one.
edit: and one more thing, we had it in two sizes, the cheapest of which was 20 grand and the "big" one was 29,999 dollars...I can't remember the size, maybe a 42 or 50ish?
My point is OLED will probably get there in a few years...if not we'll all be stuck with projectors or LCD based sets in a few years...first world problems....