Ethos. A black screen is a diagnostic method. If there is backlight bleed it will affect everything. Its not like it goes away once you take the black screen away. If people are having large variances in color fidelity or odd gamma issues they put a black screen to see if there is a backlight bleed issue. For heavans sake, a black screen isnt causing backilght bleed.
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Why can't apple stop using lg screens and just use Samsung.
- Thread starter FatGuy007
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aah on that bigger screen there is like foil film inserted in the screen which reflects white light from leds that screen s WLED less quality as RGB LED
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Guys Test your LCD here, very useful site! :http://www.lagom.nl/lcd-test/
... What?
The larger screen actually is a CCFL display. The glow is just a well known IPS issue. There is glow off angle.
A video showing the effect
I have WLED on my acer and this LCD is awful same white reflect when i anlge view from lef or right ..
I was wondering that ccfl has light coming from bttom only .. nowhere else ..
Well. I'm lost.
Backlight bleed is because of manufacturer error in sealing whatever type of backlight to the LCD be it CCFL or LED or freakin electrified blood plasma. Acer generally uses Twisted Nematic panels in their displays and they are terrible because they are terrible. Great response times bad viewing angles and the trademark "look underneath and watch the colors invert". They are cheap and in rare cases can have decent color but usually they don't. You will get much more garbage than a purple off angle hue on blacks when looking at TN panels off angle. Like all the colors shifting. IPS panels have the black hue but the colors remain constant when you are NOT looking at a black background.
Backlight bleed is because of manufacturer error in sealing whatever type of backlight to the LCD be it CCFL or LED or freakin electrified blood plasma. Acer generally uses Twisted Nematic panels in their displays and they are terrible because they are terrible. Great response times bad viewing angles and the trademark "look underneath and watch the colors invert". They are cheap and in rare cases can have decent color but usually they don't. You will get much more garbage than a purple off angle hue on blacks when looking at TN panels off angle. Like all the colors shifting. IPS panels have the black hue but the colors remain constant when you are NOT looking at a black background.
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So here is my WLED it's disaster !!
Just check background as well that is LG 47'' TV
that something different amazing
http://www.youtube.com/watch?v=2CcscfLbZy8&feature=youtu.be
Just check background as well that is LG 47'' TV
that something different amazing http://www.youtube.com/watch?v=2CcscfLbZy8&feature=youtu.be
Just finally got around to do some more testing on my 2nd rMBP. First one was LG with a yellow tint I returned.
Just got my second one today. Came with a LG display. Still has a yellow tint and this one has a red hue bleeding on the top right when I put it on a black screen.
I also noticed about 10 dead stuck/dead pixels on the bottom right as well as about 5 on the bottom left.
Tried using flexcode LCD repair to massage them out but they are stuck and will not change.
Guess this one is going back for sure now.
Just got my second one today. Came with a LG display. Still has a yellow tint and this one has a red hue bleeding on the top right when I put it on a black screen.
I also noticed about 10 dead stuck/dead pixels on the bottom right as well as about 5 on the bottom left.
Tried using flexcode LCD repair to massage them out but they are stuck and will not change.
Guess this one is going back for sure now.
Now, before anyone begins to even think that you're more evidence that LG panels have a problem, consider that for all we know, there might be five other people who returned their first LG panel, got a second one, and it ended up being perfect. I'm not saying that anyone here doesn't have a problematic screenthe issue is that you're making a huge, invalid generalization if you say that your very specific case (along with the handful of people on these bandwagon threads) somehow represents the whole population.
Check out this thread where Samsung screens showed defection after 2 weeks of use.
https://forums.macrumors.com/showthread.php?p=15441616&posted=1#post15441616
https://forums.macrumors.com/showthread.php?p=15441616&posted=1#post15441616
I am not coming in here to say LG or Samsung is better as far as the screen goes. I am only coming on here to speak my case and say what I have received both times.
I wasn't biased on which screen mine came with. It could have come with some no name brand as long as it gave me the resolution and quality I am coming to expect.
I am returning this laptop for the sole reason that I am not happy with the quality of my display regardless of who makes it.
I remember you mentioned about it last week. All I can do right now is to pray that they might disappear one day.
CCFLs are usually top and bottom as far as I'm aware.
Your acer has a TN display. The issue they exhibit off-angle is inversion - it'll be apparently even on non-dark images. The IPS issue I'm talking about is visible only on near-black images. Everything else is near perfect.
PVA displays have an off-angle issue where the apparent gamma changes.
I have an LG screen. I don't really have an issue with it.
The way I look at it is: LG has been making IPS panels for many years before Samsung (traditionally LG is a big IPS panel manufacturer, whereas Samsung makes inferior MVA/PVA panels). All my monitors (including the one on my Dell Ultrasharp, Apple Cinema, iMac) use LG panels. I've never had issues and I don't expect them to start cropping up now.
The way I look at it is: LG has been making IPS panels for many years before Samsung (traditionally LG is a big IPS panel manufacturer, whereas Samsung makes inferior MVA/PVA panels). All my monitors (including the one on my Dell Ultrasharp, Apple Cinema, iMac) use LG panels. I've never had issues and I don't expect them to start cropping up now.
Exactly my line of thinking too. LG is not a 3rd rate manufacturer like many people think. They make high end panels for the likes of Eizo. I don't think Samsung has anything in the professional market like LG does.
so statistically speaking, youre assertion before the attestation is presented as an empiracally calibrated evidentiary proposal, here to forth this may have precluded a number of dissuasive problemmatic generalizations to be specifically, yet not overgeneralized, representations of the populus.. as a whole..
so statistically speaking, youre assertion before the attestation is presented as an empiracally calibrated evidentiary proposal, here to forth this may have precluded a number of dissuasive problemmatic generalizations to be specifically, yet not overgeneralized, representations of the populus.. as a whole..
You're not as smart as you think you are. That line is mostly gibberish, indicating you don't really know how to use the terminology you're using.
The person you're quoting has a very valid point. And he's right, you cannot draw any conclusions until you conduct a proper study. A sample size of 4 is meaningless. A sample size of even 100 would be enough to draw at least some conclusions.
of course its gibberish. i was hoping i wouldnt have to explain that. But im equally proud of you for not commenting and say you agreed with me. And he doesnt have a valid point, he has a knee jerk reaction and has been firing on all cyclinders to defend LG when nobody is bagging on them. If someone has a bad panel and it happens to be LG, then this guy thinks they are having hallucinations or trying to cause a witch hunt.. and im sorry but its ridiculous.. hence my ridiculous reply..
edit.. by the way, let me ask mr statistic and you both a question. take the guy here who went through 4 panels already, one after another, and they were all bad. Do you really think, statistically speaking of course, hes a special case? do you really think the number of problems being reported here and all over the world (although according to mr statistics, the rest of the web is really just "riding the bandwagon" and not really having issues)... do you think all these problems are just make believe? Do you really think on a mass production line pumping these panels out by the millions that theres not a slight chance a few thousand have slipped out damaged? even a few hundred thousand? even with the proof being shown in pictures and videos? well i got news, it happens all the time in every automated manufacturing process known to man..
nobodys baggin LG. bad panels are showing up on both sides and thats the way it works. coming up with statistics and gibberish to try to wash it away is crazy. blind denial is as bad as blind acceptance.
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My only issue with LG is their color profiling of TN based product in 15" Macbook Pro's. Oddly the 13" look great and have proper balance.
PVA/MVA panels are not "inferior" btw. They are primarily used by color specialists. The majority of Eizo's offerings are PVA/MVA. They have by far the deepest black levels available and subsequently high static (real) contrast ratios. They however are slow on the response times. IPS has upper tier notching in all important areas. But they are slower than TN, have lower contrast ratio to PVA/MVA and only really win on color reproduction by a hair. It all depends on what you need. I like IPS because I am used to the dot pitch and need a good balance of response times and color reproduction. Contrast ratio would be nice but for me anything over 500:1 static is just fine. I'll just crush my blacks and things will be sexy enough.
PVA/MVA panels are not "inferior" btw. They are primarily used by color specialists. The majority of Eizo's offerings are PVA/MVA. They have by far the deepest black levels available and subsequently high static (real) contrast ratios. They however are slow on the response times. IPS has upper tier notching in all important areas. But they are slower than TN, have lower contrast ratio to PVA/MVA and only really win on color reproduction by a hair. It all depends on what you need. I like IPS because I am used to the dot pitch and need a good balance of response times and color reproduction. Contrast ratio would be nice but for me anything over 500:1 static is just fine. I'll just crush my blacks and things will be sexy enough.
Now, now. Samsung and LG panels both have problems, which is apple's fault for not even thinking of testing them correctly at first. I am recieving my 2nd rMBP, since my 1st was yellow (lg). I just hope its screen is actually good since I am leaving overseas tomorrow, and picking up today and have no time to open it. Crossing my fingers.
Okay, so you have two people who have replaced 4 LG monitors. How about the dozens of people, who knows, maybe hundreds, maybe thousands more out there who don't have a problem with an LG monitor in their rMBP, for every two people who do? Of course when you mass-produce you will have some bad ones, and you can understand that. The manufacturer's goal is to reduce the proportion of these defects. I have no idea what crap you're spewing with your whole MacRumors forum posters having issues ****. The forum has a huge amount of contributors, and with every "issue" that winds up exploding all over the web, such as this LG panel thing, you have some OP who wants someone's head for his misfortune, so he begins to post threads with titles like "I CAN'T BE THE ONLY ONE RIGHT?" or "I HAVE A BAD DISPLAY [Insert OP's speculated reason for part failure]". Of course, if you have over ELEVEN THOUSAND active users on at once (I just checked), maybe 0.01% percent of them will have an rMBP with a problem, and over time, as different users log in over the course of a month, you wind up accumulating several different accounts of bad displays, or whatever the latest fad may be. But it stands that these are still only a negligible fraction of the amount of people that are even logged in at one time. If we consider rMBP owners on MacRumors to be a representative sample of all rMBP owners, we can estimate that the fault rate for LG displays would still be in the neighborhood of a negligible fraction of a percent (or whatever the fault rate among rMBP owners on MacRumors may actually be).
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They have tested them. As far as we know, they're up to their own standards of quality. All of the people who whine about a problem that Apple doesn't consider to exist can either keep exchanging or can manufacture their own retina displays since they're so hellbent on getting a good one. I suppose the only solution for the insignificant proportion of the overall population of rMBP owners whose standards are above Apple's is to create a petition, but it won't really get any traction if the proportion of people who sign it is the proportion of faulty displays (given to be negligible if Apple doesn't address the "problem").