Originally Posted by epcortek
How do you figure CCFL is supposed to last longer than led , ive heard thee opposite. Can you also post the source on this uneven wear from localized dimming you speak of.
Those are the numbers that have been quoted by the TV manufacturers, so you will have to take that up with them. (using Samsung's quotes for the LCD numbers, Panasonic's quotes for the plasma numbers)
As for the uneven wear from local dimming, anytime you have a lightsource (LED, Phosphor ect....) and it is dimming sections for black bars, you are going to have part of the screen aging faster than the rest. These newer LED sets haven't really been around long enough for them to show it yet. However, in a previous thread where I brought this up (and I was heavily flamed for lack of proof on my theory, which if you think about it, has all the evidence needed in plasma displays (which operate similarly to LED backlights) But a owner of a Sony LED display from a few years back reported that he did indeed have uneven wear of his LED backlight. (thread died right after he posted that)
LED backlighting has a ton of potential in the LCD market, but just hasn't been around long enough for this to no longer be an issue. (for one, we don't know how these LED bulbs age, whether it is a slow decrease in luminance or a rapid drop (I've seen proof for both theories so far) LED local dim sets are thicker than standard CCFL backlit sets (which don't have these issues with uneven wear) they currently use more power, and have worse viewing angles over CCFL backlit displays as well. LED sets do have better motion and much better black levels over their CCFL cousins, and that is what has me most excited about this form of backlighting. I will admit that since this is a new tech in the display industry so it has a lot of room for improvment, but it just isn't there yet. (give it a few more years to work out some of the kinks, look how far both plasma and LCD have come in the last three years)