General > General Technical Chat
An expensive TV is a poor investment, and people spend FAR too much on them
tom66:
A friend of mine had similar issues with image retention on his OLED. He eventually started leaving it plugged in (normally it was powered off at night as he had one of those 'standby saver' devices that turns things off when his AVR is off.)
That apparently helps, because the Sony OLEDs are programmed to do a cycle a few hour after power off, which helps with image retention, once every couple of weeks. You can't even really see it: a very thin grey line marching up and down the panel for 15 minutes a few hours after the TV turns off. No idea how that helps, but apparently it does. Sounds similar to the "smoky OLED" story but a manually activated cycle.
BrianHG:
Warning, QD-OLED has just hit the market.
Unlike OLED, true pure colors (no stupid white pixels to boost OLED's weak brightness), 3 year no-burn in guarantee, brighter overall white level and also already available in desktop PC monitors.
Be prepared to pay the new adopter's tax, but it looks worth it.
m k:
I've seen a small Sharp color LCD so burned that I thought it was dim when it was actually off.
It's possibly still among us and now been off for few years after showing generally same picture for 20 years.
tooki:
--- Quote from: MK14 on February 05, 2022, 05:21:29 pm ---
--- Quote from: tooki on February 05, 2022, 01:07:00 pm ---Plasma TVs suffer similarly if used for static images (I’ve seen some awful burn in on plasmas used as airport departure boards, for example). But used for video, absolutely not a problem. My Panasonic plasma is from mid 2009, and there is not even a hint of burn-in, not even a difference on the edges from the black bars on 4:3 content, which I watch plenty of. (Practically 100% of my viewing is via an Apple TV box, which shows a screen saver after a few minutes, including when video is paused, so the TV is never exposed to long-term static images.) While I do suspect that OLED is more sensitive than plasma, I know I’d be comfortable buying an OLED now.
--- End quote ---
To check my understanding. Are you saying you'd be happy to buy an OLED TV, but only if it is used for Movies (and other non-static content) ?
Or would you be happy to buy OLED TVs, for massive static image content, such as computer/gaming/live-TV(station channel icon burns) uses ?
Which many households would do, depending on who lives in that household.
The later Plasmas, especially the Panasonic ones, with a claimed (and probably true), 100,000 hour screen life and advanced image retention/burn protections. Would probably have made good purchases at the time, they were readily available. I think the issues were more that mud sticks, and Plasmas had got a bad/poor reputation, from the earliest Plasmas, which did sometimes cause screen issues
But those would have been (the earliest), before the screen manufacturing techniques improved (as regards screen life time), and anti-burn technologies were introduced, and possibly other advancements, to limit/protect the later Plasma TV screens.
--- End quote ---
As far as I am aware, even early plasma TVs were just fine when used normally for video, without any static images. Unfortunately, that was coincident to the advent of always-on channel badges. :/
Additionally, plasma displays also have temporary image retention, which people sometimes mistook for burn-in. (Like going into a shop, changing the source, and seeing a slight ghost of the prior image. If they waited 10 minutes it’d be completely gone.)
As for OLED, I’d be comfortable getting one for my usage as described above. I don’t watch enough live tv (as in, zero for over a decade) to really know how big an issue that is. Burned screens like the one shown earlier are likely from pubs and similar uses with high hours of very similar content that I doubt are representative of ordinary household wear and tear. I probably wouldn’t get an OLED as a TV to leave on in the background all day long as some folks do. (Just as I wouldn’t do that with a projector of any kind.)
tooki:
--- Quote from: BrianHG on February 06, 2022, 12:49:33 pm ---Warning, QD-OLED has just hit the market.
Unlike OLED, true pure colors (no stupid white pixels to boost OLED's weak brightness), 3 year no-burn in guarantee, brighter overall white level and also already available in desktop PC monitors.
--- End quote ---
Adding the white subpixel isn’t stupid, it’s smart. Any time you have all three RGB subpixels lit simultaneously, the “common” brightness level is just white. (E.g. if the RGB levels are 230/175/60, then you can subtract 60 from all of them and instead run the white subpixel at the equivalent brightness of 60/60/60, sparing the blue subpixel some wear.)
Mind you that like plasma, OLED really isn’t intended for high ambient light environments; LCD is better for that. But in ordinary household light levels they’re totally fine.
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