LG 55EA9800 55" OLED Owner's thread - Page 176 - AVS Forum | Home Theater Discussions And Reviews
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post #5251 of 7341 Old 07-29-2014, 02:05 PM
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LG now states its models coming out are same as plasma, 50-100k hrs
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post #5252 of 7341 Old 07-29-2014, 02:29 PM
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With only White OLEDs used in these panels, that kind of life span isn't too surprising. With Samsung's panel of true RGB pixels, god know s how long those blue pixels last. 8,000? 14,000 hours? We knew they are short lived but not sure how short.
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post #5253 of 7341 Old 07-29-2014, 02:36 PM
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No, I simply enjoy it the way it is. I watch LB movies, play games and watch cable TVs with scroll bars or stationary logos all the time.

Good to know - thanks.
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post #5254 of 7341 Old 07-29-2014, 02:42 PM
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Originally Posted by Foxbat121 View Post
With only White OLEDs used in these panels, that kind of life span isn't too surprising. With Samsung's panel of true RGB pixels, god know s how long those blue pixels last. 8,000? 14,000 hours? We knew they are short lived but not sure how short.

The devil is in the details. With the Samsung 'true' OLED structure (separate blue OLED and green OLED and red OLED), degradation of the Blue light output versus red or green was going to be impossible to hide.


With the LG 'white' OLED composed of a yellow OLED layer and a blue OLED layer stacked on top of each other, they have more wiggle room to define lifespan in the manner they see fit. If light intensity remains at spec but there has been a color shift to yellow over time (less blue component in the white light), does that constitute an end of the 'lifetime' or has it continued?


But that being said, I'd be surprised if LG was making all of this investment in manufacturing capacity if they did not have a product that would meet average consumer expectation in terms of lifetime.
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post #5255 of 7341 Old 07-29-2014, 03:17 PM
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Originally Posted by Foxbat121 View Post
With only White OLEDs used in these panels, that kind of life span isn't too surprising. With Samsung's panel of true RGB pixels, god know s how long those blue pixels last. 8,000? 14,000 hours? We knew they are short lived but not sure how short.
There's a good reason why Samsung made the blue subpixel larger than the red and green subpixels. It doesn't have to be driven as hard to get the necessary luminance which means it has a longer lifespan, presumably equivalent to the red and green.
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post #5256 of 7341 Old 07-29-2014, 03:39 PM
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There's a good reason why Samsung made the blue subpixel larger than the red and green subpixels. It doesn't have to be driven as hard to get the necessary luminance which means it has a longer lifespan, presumably equivalent to the red and green.

'Closer' is probably more accurate than 'equivalent' - I believe the gap in lifetime between the blue and the others was more than a factor of 2...
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post #5257 of 7341 Old 07-29-2014, 04:07 PM
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'Closer' is probably more accurate than 'equivalent' - I believe the gap in lifetime between the blue and the others was more than a factor of 2...
Are the blue subpixels exactly 2x larger? Also, how do you know that the lifetime vs. current or current vs. brightness relationship is exactly linear rather than exponential?
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post #5258 of 7341 Old 07-29-2014, 04:16 PM
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Are the blue subpixels exactly 2x larger? Also, how do you know that the lifetime vs. current or current vs. brightness relationship is exactly linear rather than exponential?

The blue looks to be about 2X larger, but you are correct - the aging effect may not be linear (in which case one way to greatly extend the lifetime of your OLED would be to watch in a dark room :-)
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post #5259 of 7341 Old 07-29-2014, 04:18 PM
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Originally Posted by Stereodude View Post
There's a good reason why Samsung made the blue subpixel larger than the red and green subpixels. It doesn't have to be driven as hard to get the necessary luminance which means it has a longer lifespan, presumably equivalent to the red and green.
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'Closer' is probably more accurate than 'equivalent' - I believe the gap in lifetime between the blue and the others was more than a factor of 2...
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Originally Posted by Stereodude View Post
Are the blue subpixels exactly 2x larger? Also, how do you know that the lifetime vs. current or current vs. brightness relationship is exactly linear rather than exponential?
That's correct.

Or if the dopant is the same...
Or if the thickness is the same....
Or if the relationship (as you said) of OLED material to output in (lumen-hours?) is the same....
Or or or or or....

You're right in that we have little idea at all about this.

What do you call a Harley that doesn't leak oil?
Out of oil.
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post #5260 of 7341 Old 07-29-2014, 04:21 PM
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LED/LCD has no susceptibility to IR regardless of any warning LG may print in their manuals - it's a bullet-proof 'set-it-and-forget-it' technology that is more consumer friendly than plasma and that contributed to the world dominant position it finds itself in now.
I am sorry to disagree sir. I have witnessed LCD burn in (to toast) on more than a dozen panels just in 1 airport. Far from bullet proof in the wrong application. It might be rare, but but even the beloved consumer LCD is susceptible.
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post #5261 of 7341 Old 07-29-2014, 06:30 PM
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I picked up a one of these sets to compare to my 950b to see what I'd like to keep. So far I'm very impressed. It has a dead pixel, anyone find there pixels came back to life?
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post #5262 of 7341 Old 07-29-2014, 06:35 PM
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I picked up a one of these sets to compare to my 950b to see what I'd like to keep. So far I'm very impressed. It has a dead pixel, anyone find there pixels came back to life?
How are you finding the UHD vs 1080 comparison between the two?
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post #5263 of 7341 Old 07-29-2014, 06:44 PM
 
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I picked up a one of these sets to compare to my 950b to see what I'd like to keep. So far I'm very impressed. It has a dead pixel, anyone find there pixels came back to life?
They do not come back. Is it a pixel or sub pixel? I have 2 green sub pixels, everyone seems to have a couple. A non-issue for me as you have too run a slide and to up to the screen 2 feet away to see.
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post #5264 of 7341 Old 07-29-2014, 06:44 PM
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How are you finding the UHD vs 1080 comparison between the two?
There is a difference but it's not a drastic one. Although all I have to go off of is netflix 4k vs 1080p. The sony is much brighter and I notice the oled gets dimmer on whites or if I'm watching family guy. The oled holds blacks better but the 950 does a great job too. I think the color on the 950 looks better, skin tones look perfect. I have to messed with the lg setting much yet though.
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post #5265 of 7341 Old 07-29-2014, 06:49 PM
 
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There is a difference but it's not a drastic one. Although all I have to go off of is netflix 4k vs 1080p. The sony is much brighter and I notice the oled gets dimmer on whites or if I'm watching family guy. The oled holds blacks better but the 950 does a great job too. I think the color on the 950 looks better, skin tones look perfect. I have to messed with the lg setting much yet though.
Now imagine the OLED is 65" 4k and $1000 cheaper than the 950B. The one thing I do t like about Sony 4K sets is they are so darn heavy. 100 plus pounds when everything was heading lighter and thinner. Watch the Kuro demo video on you tube, should look good on both sets.

If you like baseball try watching it on the OLED it looks so Darn good. The same with soccer

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post #5266 of 7341 Old 07-29-2014, 07:14 PM
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When I'm sitting in the sweet spot of the 950 it's crazy how much these sets look alike.
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post #5267 of 7341 Old 07-29-2014, 07:22 PM
 
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When I'm sitting in the sweet spot of the 950 it's crazy how much these sets look alike.
From the photo the OLED looks much sharper. Of course your eyes will see things different than the camera.
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post #5268 of 7341 Old 07-29-2014, 07:26 PM
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Comparing the folds in the clothing of the passenger in the car, the panel on the left is more striking and dimensional.
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post #5269 of 7341 Old 07-29-2014, 07:27 PM
 
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When I'm sitting in the sweet spot of the 950 it's crazy how much these sets look alike.
You have created yourself a true pickle that only the 65" 4k OLED will get you out of.
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post #5270 of 7341 Old 07-29-2014, 08:29 PM
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The dead pixel that shows up on green can be seen at 9 feet back. I wonder if that's more then just a sub pixel. I'm also surprised the oled shows some banding on grey field pictures. And it also is darker on the right side near the second half on the screen.

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post #5271 of 7341 Old 07-29-2014, 08:36 PM
 
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The dead pixel that shows up on green can be seen at 9 feet back. I wonder if that's more then just a sub pixel.
Either you have really good eyes or yes it sound like a cluster of sub pixels. Sub pixels are so small they are hard too see and I have 20/20 vision. If you decide you like it I would exchange it. Get real close and you will see if it is a couple of sub pixels.

The only color I worry about is blue because it might theoretically be visible in a blue skyline. I think green would be impossible to see with content, but 9' is pretty far back to see it even on a slide.
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post #5272 of 7341 Old 07-29-2014, 08:44 PM
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Either you have really good eyes or yes it sound like a cluster of sub pixels. Sub pixels are so small they are hard too see and I have 20/20 vision. If you decide you like it I would exchange it. Get real close and you will see if it is a couple of sub pixels.

The only color I worry about is blue because it might theoretically be visible in a blue skyline. I think green would be impossible to see with content, but 9' is pretty far back to see it even on a slide.
I guess my vision is good...
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post #5273 of 7341 Old 07-29-2014, 08:44 PM
 
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The dead pixel that shows up on green can be seen at 9 feet back. I wonder if that's more then just a sub pixel. I'm also surprised the oled shows some banding on grey field pictures. And it also is darker on the right side near the second half on the screen.
I only had an issue with one set because the outer part changed the color temp so if you watched a black and whit movie the sides were a blue-red tint, I exchanged it and their set is perfect. I have ever seen any banding in content. No set will ever be perfect, you have too decide which technology your like best. If that's lcd then stick with it. I really like the 900B for the size and money but prefer OLED picture quality. I am thinking the new 10bit panels may fix the grey scale but who knows.
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post #5274 of 7341 Old 07-29-2014, 08:46 PM
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I guess my vision is good...
more like 9 inches away

No way I could see a dead sub pixel at 9 ft away
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post #5275 of 7341 Old 07-29-2014, 08:49 PM
 
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I guess my vision is good...
I do not believe lG has made an OLED WO at least one sub-pixel out. I have 2 green out and they disappear at 1-2 feet back. Impossible to see with content.
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post #5276 of 7341 Old 07-29-2014, 08:49 PM
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more like 9 inches away

No way I could see a dead sub pixel at 9 ft away
I had my vision checked when I was in my twenties and my vision was better then 20/20 even the doctor was impressed. I'm 31 now but I guess I still got it.
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post #5277 of 7341 Old 07-29-2014, 10:13 PM
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I'm also surprised the oled shows some banding on grey field pictures.
Can you clarify what you mean by "banding"? Does it show up on a photo? What is the manufacturing date of your panel?
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post #5278 of 7341 Old 07-29-2014, 11:52 PM
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I guess my vision is good...
Do you have a photo taken at 9'?
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post #5279 of 7341 Old 07-30-2014, 01:01 AM
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User reviews like this are very encouraging. Any other happy owners' with a 'care-free' experience please chime in - it's always so much easier for those experiencing issues or having concerns to put energy into these boards, but especially for cutting-edge technologies like these WOLEDs, any effort put into letting us lurkers know about trouble-free user experience is equally valuable.


Thanks for putting in the effort and taking the time.
Chiming in. Had the set since mid april. There are none of the issues mentioned here that bother me. The few dead pixels I have aren't visible from where I sit. I don't notice any letterbox IR. Color cast and ABL dimmed whites aren't an issue I experience in any kind of normal use, even the most "white" of content like the snowstorm episode of Fargo didn't exhibit any of these flaws - the only way I imagine being bother by them is if using the TV as a computer monitor where there will be large areas of uniform white.
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post #5280 of 7341 Old 07-30-2014, 07:12 AM
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Well I think I'm going to keep my 950 and return the oled. Don't get me wrong the oled is unreal set. The draw backs On the oled are the same things that bothered me with all my plasmas. If the tv was for my theater room id pick the oled for sure in a bigger size but since this is my work horse tv I like the 950 brightness and no worries of IR. In the future I can definitely see my self getting an oled.
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