LG 55EA9800 55" OLED Owner's thread - Page 176 - AVS Forum
Forum Jump: 
Reply
 
Thread Tools
post #5251 of 5260 Old Today, 02:05 PM
AVS Special Member
 
mo949's Avatar
 
Join Date: May 2012
Posts: 2,673
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 315
LG now states its models coming out are same as plasma, 50-100k hrs
mo949 is offline  
Sponsored Links
Advertisement
 
post #5252 of 5260 Old Today, 02:29 PM
AVS Special Member
 
Foxbat121's Avatar
 
Join Date: Jul 2003
Location: VA
Posts: 9,812
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 118 Post(s)
Liked: 199
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.
Foxbat121 is online now  
post #5253 of 5260 Old Today, 02:36 PM
AVS Special Member
 
fafrd's Avatar
 
Join Date: Jun 2002
Posts: 2,721
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Liked: 321
Quote:
Originally Posted by Foxbat121 View Post
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.
fafrd is online now  
post #5254 of 5260 Old Today, 02:42 PM
AVS Special Member
 
fafrd's Avatar
 
Join Date: Jun 2002
Posts: 2,721
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Liked: 321
Quote:
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.
fafrd is online now  
post #5255 of 5260 Old Today, 03:17 PM
AVS Special Member
 
Stereodude's Avatar
 
Join Date: Jan 2002
Location: Detroit Metro Area
Posts: 9,749
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 393 Post(s)
Liked: 411
Quote:
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.
Stereodude is online now  
post #5256 of 5260 Old Today, 03:39 PM
AVS Special Member
 
fafrd's Avatar
 
Join Date: Jun 2002
Posts: 2,721
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Liked: 321
Quote:
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.

'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...
fafrd is online now  
post #5257 of 5260 Old Today, 04:07 PM
AVS Special Member
 
Stereodude's Avatar
 
Join Date: Jan 2002
Location: Detroit Metro Area
Posts: 9,749
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 393 Post(s)
Liked: 411
Quote:
Originally Posted by fafrd View Post
'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?
Stereodude is online now  
post #5258 of 5260 Old Today, 04:16 PM
AVS Special Member
 
fafrd's Avatar
 
Join Date: Jun 2002
Posts: 2,721
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Liked: 321
Quote:
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?

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 :-)
fafrd is online now  
post #5259 of 5260 Old Today, 04:18 PM
AVS Special Member
 
tgm1024's Avatar
 
Join Date: Dec 2010
Posts: 5,939
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 150 Post(s)
Liked: 577
Quote:
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.
Quote:
Originally Posted by fafrd View Post
'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...
Quote:
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.

WARNING: You have now entered a no @#$%tard zone. Please gather your anti-vaccine propaganda nonsense and slowly back out the way you came in.
tgm1024 is online now  
post #5260 of 5260 Old Today, 04:21 PM
Moderator
 
Barrybud's Avatar
 
Join Date: Apr 2003
Location: Southeastern, PA
Posts: 2,543
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 37 Post(s)
Liked: 22
Quote:
Originally Posted by fafrd View Post

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.
Barrybud is online now  
Reply Flat Panels General and OLED Technology

Tags
Lg 55ea9800 Oled Hdtv , Lg
Gear in this thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off