Originally Posted by TNG
I think that PENDRAGON has a good point with the uneven aging of the LEDs that are used for backlighting. There is not an easy or cheap way to predict if the LED that lights Zone A is going to be the same brightness in a year as it's neighbor in Zone A-1. This could cause uneven areas.
Yeah, uneven wear is a possibility, if you have a 16:9 set and watch movies with an aspect ratio of 2.33:1 (or similar) all the time - or 4:3 movies, for that matter. Everything that gives you black borders.
I wonder how many non-16:9-formatted material I'd have to watch to get uneven wear?
And wouldn't plasmas have the very same "problem"?
Oh no - of course not as their panel life is rated about 100.000 hrs - at least Panasonic says so, the company that tries to sell you a set. A really trustworthy number, then.
So it *could* have this problem but you won't see it until 2029?
Some people also seem to have difficulties comparing sets as they use this number when panel life is concerned and a sentence later they argument with the black level of a Kuro. And yet another sentence later the brightness of the new Panasonics is used against LCDs, while the Kuros still offer the best color fidelity.
As if there exists some kind of perfect display that combines all these properties. Not that I wouldn't be interested...
Regardless if we have 100.000 or 50.000 hrs - these are statistics and not proven constants. A display can - and often will - fail much earlier, regardless of the make and often not because of its backlight. It's the power supplies and inverter boards - everything that handles power - that is the no. 1 defect.
So, does a local dimming LED set have uneven wear? Well, I guess the tires of my car also have uneven wear as I drive more right handed bends than left handed - or was it the other way round?
As for the viewing angle, it is a common thing that PDP fans bring up as to why LCD is not worth the money and it is just as much a load of bull as most of the burn in hysteria out there.
You hit the nail on its head.
The viewing angle is something you take care of when you set up the set - usually only once, perhaps twice in its whole life. It's the moment when you really care about the room's seating and where the optimal viewing positions are attained.
This is exactly the same argument that owners of very reflective panels (plasma & certain LCD models) defend their sets with - only that this time the culprit are light sources...