Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Friend was going to drop by CMK for me but now I want the flawless one :) Whats the other shop that had them ?

-Jonan

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

So is there a verdit on the black spots? Is it just something that is the case with AMOLED displays?

I took a photo in a dark room the other day and had 2 black spots on the screen. Am thinking of taking it directly to Nokia to see if they know about it or not....

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I would say that it is not related to the screen itself, not to the electronic part AMOLED. It could be related to the way the gorilla glass was glued to the AMOLED, something with the paste they used creating this dark areas.

here they show the glue thing:
http://www.youtube.com/watch?v=pwoGxrLZlAk

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I think that probably someone should ask nokia. It could be an issue related to the way they glue the gorilla glass to the amoled screen - not homogeneous distributed glue. It is not necessary to be an electrical issue with the screen itself as when the screen is bright and the led's are on there is no black...

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I just did some research, and A LOT of Galaxy users have the same issue.... So it definitely seems to be an issue with Samsung's production technique. Someone was saying that they've been doing a dodgy job with sealing the back of the screen.... Not sure i'll take it back now as it really is hardly noticeable, my case is nowhere near as bad as some of the pictures i've seen

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

This problem is common for all phones with amoled pentile matrix based display made by samsung
check this moto razr thread at xda
http://forum.xda-developers.com/show....php?t=1360178

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Spots aren't the only issues discussed on this thread, read back through it.
Pg 6 & 8 in particular IIRC are pretty enlightening, but best to read it all.
IIRC it was already agreed that the black spots were probably a characteristic of AMOLED/production.

Unless someone beats me to it....
I may do a summary of it all soon, & then get the OP to update the 1st post.
It's getting too tedious, all the info/observations are too disjointed.

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

That would be great thing to do Jalyst. In addition perhaps you could also add some info to some users who are willing and ready to take their devices apart as i believe there are 3rd party sites that are selling nokia n9 oem screen parts. The way I have come to deal with it is that i can eventualy replace the screen myself. There is also a video floating around youtube showing you how. To me, it doesnt look too difficult as long as you have the right tools and patience. The replacement i got doesnt have the purple tint but definitley the dark spots which isnt bad if your not watching it in pitch dark. In my case, i rarely do. Just my two cents.:)

let me know what you guys think and whether you agree or not.

EDIT: Here is a link where you could find not only the display but also the Housing which looks white to me. So for those interested in customizing their 16GB nokia n9 to white, this may be the solution. Not sure though how reliable this site is: http://www.parts4repair.com/nokia-n9/

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

The reason i mention it is because someone in this thread returned their phone and got one that has NO black spots... which would lead me to believe that it has something to do with Samsung's quality control on their screens...

For the record it has nothing to do with the display being stuck on to the screen, as a lot of Galaxy phones are having the same issue

I'll drop by the Nokia store near mine and see if any of the repairers know anything about the issue

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

A little more research on this led me to this post in a forum:

"Last night, I spoke with my LCD PHD friend a bit more about this...

He said that OLED is made from a light producing organic plastic. Thus there will always be some variation to the brightness that is displayed throughout the screen. The only question is determining if yours is good enough or there is too much distortion. So all of the claims about getting replacements that are worse or just as bad, are right on. You just need to determine the relative quality of your phone's screen... but most people don't have anything to compare against."

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Okay guys, sorry for all the posts but i've finally managed to nail it. What everyone is experiencing with the blotches/lines/spots is an effect of AMOLED displays... the imperfections are called 'mura'

I found a website that produces some sort of special layer that prevents mura.... they give a brief description of (their) OLEDs

1) An OLED (organic light-emitting diode) layer that emits light.

2) A backplane, made of TFT (thin-film transistor) circuits that provide current to the OLEDs, thereby controlling their brightness.

3)Polysilicon backplanes don’t provide uniform current because of manufacturing non-uniformities. Without IGNIS technology, the TFT circuits will provide different current to the OLEDs, which results in lines, spots, and cloudy areas known as “mura”.

4) IGNIS AdMo-p™ technology uses a patented TFT pixel circuit and driving scheme to compensate for the non-uniform backplane. So the TFT circuits always provide uniform current to the OLEDs, even though the TFTs themselves aren’t uniform. This means the AMOLED display will always show smooth, mura-free images.

http://www.ignisinnovation.com/techn...o-p-technology



So fear not, your phone isn't faulty!!!! It's just a matter of getting a display that has less imperfections than others

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

This doesn't explain all the issues mentioned in the thread.

If someone else can do the summary of the entire thread before me, please do.
Otherwise I may do so in the next week or so...

I have PM'd konttori again, I don't know his twitter so haven't tried that.
I might try his blog post....

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

So we can conclude that the "mura" thing are these lines that appear due to non-uniform brightness:

http://www.blogcdn.com/www.engadget....nexuss6001.jpg

http://users.telenet.be/brixius/images/xda/lines1.jpg

http://users.telenet.be/brixius/images/xda/lines6.jpg


But that still doesn't explain the black spots, which has nothing to do with the brightness because the pixels are switched off, i.e. no current.

:confused:

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I got an opportunity to check my friends N9 and it had these purple lines, as my N9 did too.

I sent the N9 for maintenance, but I'm most certain that every N9 has this issue. It's really hard to notice in store, as they tend to have strong direct lights above the phones. I checked the only N9 in store and it had this issue too.

Now I'm waiting for the opinion from Nokia and will return the phone if it's beyond repairing...

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I quote from the aforementioned site: "Polysilicon backplanes don’t provide uniform current because of manufacturing non-uniformities. Without IGNIS technology, the TFT circuits will provide different current to the OLEDs, which results in lines, spots, and cloudy areas known as “mura”."

Those black spots are mura and lines are mura, too. Mura is a term that describes all those imperfections.

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Looks like droid razr has the same issue, There is whole thread at motorolla forum discussing this issue. If you go to page 3 you will see that some display's has few of these black spots where as on others it is quite noticeable.
https://supportforums.motorola.com/t...art=0&tstart=0

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I thought I would post an update on my situation. I spoke with the manager of the store where I bought my N9 from and apparently the official position of Nokia, and of the store I bought the phone from, is that the purple/green lines are not a defect but rather of a feature of the display used in the phone.

I also spoke with the Finnish consumer ombudsman who said that apparently my only option in order to have chance at getting a refund or some of my money back is to make an official complaint to the Finnish Consumer Disputes Board.

I'll call the store back tomorrow and try to argue my case again and bring up the issue with the color depth of the display.

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

a feature? how?

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I don't think you have.

This would mean that those lines or spots would always be at the same position on the display, right? Thats not the case. They move across the screen, depending on where you scroll the (dark) content to.

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I wonder about that too. I guess it's the old software defense "It's not a bug it's a feature!" applied to hardware. :mad: Apparently this should be accepted by us, the consumers, because the same "features"/faults can be found in other phones as well, at least that was the explanation from Nokia relayed to me by the store manager.

My previous phone had a pentile matrix AMOLED display and it didn't have such "features". The sad fact is that if I take it to the Consumer Disputes Board their decision could take almost a year and it's not legally binding since it is a mere recommendation about how the dispute should be solved. It is a shame that Finland doesn't have a small claims court system like U.S. does.

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Teemu R, I'm with you on this one. I bought my N9 from Gigantti, which had the same reaction on my N9. Mine is still at repairs, but when I asked the salesman at store what should we do if the lines are beyond repairs, he simply answered "well then you propably make an official complaint about this".

Never buying anything from that store and from Nokia, if this is the only option...

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I got my N9 about last week, and yesterday I notice these marks in the dark. I panicked thinking I scratched it, lol, but happy to know i'm not the only one. On that website page 3, the very last picture on the bottom, that's exactly what is shown on my screen. Again, I never noticed it in daily use, only once i was in completely darkness and my screen was darken... So far I doesn't bother my day-to-day use at all, but I just hope it won't get worse... :(

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

The links are posted in the motorola forum.

Read this:
http://androidforums.com/3542874-post8.html

S2 also has it???
http://androidforums.com/samsung-gal...-blotches.html

I haven't got my N9 yet. Waiting to see if this issue will be resolved with new batches of the phone. :D. Any suggestions?

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

As my previous post states, it's not a 'fault' with the phones, it's the limitations being used in the current technology

There is technology available that makes sure these lines/blotches don't appear, however it would be very unlikely for the manufacturer of the screens (samsung) to start using this new tech on the current screens

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Do you guys also notice a long afterimage / ghosting on your screens?

I have a pretty light wallpaper set on my status screen, and when i unlock my phone from the lockscreen the time afterglows visibly on the wallpaper for a number of seconds. I estimate it takes about 10 seconds to completely disappear...

Is this also a side effect of the used screen type?

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I currently own 2 N9 handsets (Black 16GB / Cyan 16GB) there are clear difference in colour rendering between both handsets with the Cyan showing more natural colour. (white is white) while the Black gives a green tint to the white. In the beginning i had the screen changed for the Black one as it had a lot of the 'dark' spots now lesser and not 'killing' me.

But i realised the green tint still persist with the new screen, making me wonder if the driver in it that is causing the tint as the Cyan handset produced natural colours. Now I'm contemplating if there is any chance for Nokia Care Centre to change it or it is something i have to dreadfully live with.

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Is there an official statement regarding this display issue? (significantly different tints) It is quite bothering.

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Still haven't had a response from konttori about all the issues.
He was going to get back to us....
Might need to try something else other than PM'ing him.
Been meaning to summarize them all. Will do soon hopefully.
Most seem to be put down to one thing or another.
But there's still at least one issue that's unexplained IIRC.
And one or more of them should be fixable via software.

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Hey guys. OP here. I am a bit of a lazy scumbag so I want to say sorry for not updating this thread :p

Anyway I got some interesting news for you guys. Here goes my story. As I stated in the original post I had a 64 gb Nokia N9 from Three DK, but ended up getting a full refund because in the end the screen was unbearable. I still stuck to these forums, reading this thread once in a while to see how things went with the screen and researching on the N9.

So today I bought a N9 again, this time the 16 gb model from a danish retailer unlocked without contract.

Whats interesting is that my new N9 doesn't have the black spots. I was quite stunned because after following this thread for 2 months I came to the conclusion that we had to live with the black spots, but man were I happy to see that my new phone got nada black spots.

I think that Nokia has slightly updated the N9 and this belief can be supported with the fact that the headphones which came with my new N9 is not the same as the one that came with my 64 gb I returned 2 months ago.

I still got the old headphones lying around (teehee I kept them when I returned the phone), so if its noteworthy I can try to take a photo of the old and new headphones.

I still haven't checked my new phones for the red lines in the browser. Going to sleep now :/ Will do a follow up later.

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

@weird0

can you post a pic of the two headphones? I'm curious as to the differences....

When I initially posted here. My first purchase had black spots as well. I returned it, had a refund and bought from a different store - the N9 is officially available in my country and both stores I got it from are official Nokia retailers.

Anyway, the second one doesn't have the black spots and I'm happy. A few days after my purchase, I got another N9 and the second one doesn't have the black/dark spots as well.

The headphones that came with the two 'unaffected' units came with the same headphones as the one that I originally got....

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

@wierd0
I am interested in the pics as well. I haven't got my N9 yet, and was waiting for the Screen issue to get resolved in the newer hardware/batch. :rolleyes:

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I think you'll find you just got lucky. The current generation of AMOLED screens has this side effect.... People with Samsung Galaxy phones have taken them back for repair only to find their new screen has the same issue

....And i've heard now that Samsung are telling Galaxy users that this is a common effect of the screen, and that therefore they won't replace them

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Which 'issue' are you talking about? There are 3 (maybe 4) issues being discussed in this thread. (None of which is really acceptable; if this is a side effect of the current generation of AMOLEDs, then they're currently selling a faulty batch to device manufacturers.)

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

The blotches/spots/lines you can see in a pitch black room, when viewing a dark image. Technical term is mura. I've already posted in this thread about it. Even TVs suffer from this problem

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

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Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Hmmm. Those are the Nokia WH-701 and is the standard headset issued with the N8 :p

Are you sure your store didn't switch them? :D

Anyways, I also got them, and am actually using with my N9 - if my Philips SHB9000 is too big to carry...

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

What do headphones have to do with this thread? :confused:

*EDIT*
NVM read some of the earlier posts.

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Oh. This is hardly noticeable and the least annoying of all these problems.

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

I upgraded my N9 from PR1.0 to PR1.1, these issue still existed.

That would be great if Nokia release a software update with a newer version of display driver and fixed the screen issues. But I don't think these are software related problems. :(

Re: Nokia N9 Screen Troubles (someone help me out confirm this)
 

Finally got a response from konttori...
He's given me a better contact at Nokia (display side expert).
I will gather-up all the doco'd issues soon & contact him.
If anyone can trawl the thread & summarize them in the the meantime.
That'd be hugely appreciated....