06-22-2012 02:40 PM - edited 06-22-2012 02:42 PM
We are looking into the white spots - just brought in a cusotmer example system this week. Until we have time to look at several of these and see if the spots are randomly placed, whether they developed over time or since day 1, I think it is all speculation. There are some T420s panels reported with light blotches and as far as I know, those are not IPS.
I'm not sure I agree it is fair to disparage the product by painting with a very broad brush and saying "low cost / low quality IPS panels".
The light bleed may not be inherent to the panel and can be caused by pressure from the bezel. I have seen light bleed discussed in forums going back many generations of systems ( I can still recall T60 discussion) so , not sure it is really an IPS panel issue.
Please don't missunderstand my comments as complete denial - I'm aware of the feedback and we've tried to address the items that seemed out of spec including the ghosting issues reported during production of early X220 units.
If your replacement panel has a very clearly evident white spot, I'd like to see that too. Can you PM me your contact info and I'll arrange to work with you on the LCD.
06-22-2012 04:25 PM
Glad to hear that you got your screen replaced and the matter is resolved for you.
06-22-2012 07:36 PM
From my own peliminary researches with the X220 LCD.
The white spot of the IPS panel isn't a result of low cost/low quality IPS panels, but rather that on the X220 everything is packed too closely together to achieve a thinner top case profile.
This essentially means that any flexing motion of the LCD casing could cause the various support mechanisms and wires to put pressure on the reflector plate on the LCD (if the pressure from the support is strong enough, the white spot will result).
I am not sure why the IPS is more susceptible to this then the TN.
The above is a diagram of how the LCD works.
06-23-2012 03:49 AM - edited 06-23-2012 04:39 AM
06-23-2012 12:29 PM
I had the white spot on my T43 after 3yrs. I was not really surprised after all the bad treatement, but my X220 it was after few month, most time spent in the docking.
I sent my laptop and they have replaced the screen, which is good. So that problem is resolved for me.
06-26-2012 12:50 PM - edited 06-26-2012 12:50 PM
It's hard to catch it on camera. Even worse though is the light bleeding all across the bottom.
I will upload a picture soon. I think you may be right about the bezel. It's possible that it's too tight and simply "pinching" the
LCD inside the bezel.
When they replaced my LCD, they did NOT replace the bezel. Just the panel inside.
06-26-2012 03:59 PM
06-29-2012 06:03 PM
07-05-2012 12:51 AM - last edited on 07-05-2012 02:02 AM by Serene_Lenovo
Thanks for posting - please send your machine in for a check- kindly give our service team a call so they can assist you.
07-19-2012 03:39 PM
I'm pretty disappointed with Lenovo right now. After about 6 months of owning the laptop (x220 w/IPS) I had 2 brightspots on the screen. I noticed a third starting to grow and decided to send it in for repair. I got the same response as many, stating that the bright spots we're caused by pressure and I would have to pay $750 to replace it. First off, I baby my machine. I've taken it with me on one trip, but typically it sits on my desk at home. I've cleaned it on two occasions using the iclear solution and a cloth, but I never use anymore pressure than I would on my macbook pro which I've had for years and the screen is still flawless. I just don't see how I could of caused this since the spots seem to have appeared on their own. I went ahead and paid for the replacement, but I'm confident in saying I will never buy or recommend another lenovo product. The sad part about this was I was pretty happy with the x220 and was planning on moving from Apple to Lenovo products. Obviously, I will have to find another alternative.