Originally Posted by wxman
ABL has a big impact. Without it, the lifespan in vivid mode would be like you said, about 5 years. My guess, since OLED has aggressive ABL and kicks in at 130 nits with normal viewing, the tv will last a lot longer. It's impossible to hit 400 nits full screen on OLED at least with the current generations.
Good point - I'd forgotten about ABL. And it may actually be the ABL threshold that LG uses to test lifetime (that would make sense).
As far as BI, I don't have an answer. Why can I run tv in bright room mode (100/85) and the bulk of my watching is baseball or football, with static logos and score logos, without any hint of BI?
First, only static fully-saturated elements/logos that are bright yellow/orange/red are possible sources of burn-in. White logos in particular are nothing to worry about, nor are less-than-fully-saturated logos (both because of the highly-efficient white subpixel).
And second, you would have to have a specific qualifying logo displaying at a specific consistent location for at least 20% of total TV hours (400 hours or more per year, in your case) to be a concern.
So far, the few members who turn their WOLEDs on to CNN or MSNBC in the morning and leave them on that channel all day long are the only consistent examples of burn-in-from-TV-watching we've been able to nail down.
I suspect that between different sports, different channels, and commercials and other breaks/interviews/talking heads, if you do the analysis you'll conclude that you don't have any qualifying logo elements that are being displayed for more than 20% of your overall viewing time...