05-15-2011 04:46 AM - last edited on 07-15-2011 08:45 AM by Mark_Lenovo
There are two items being discussed in this thread:
1) A backlight bleed issue as described by SR45 - we are investigating this, but have seen only a couple users noting this so far.
2) "Ghosting" or persistence of an after-image phenomena after a static image is maintained on the display for 15 or more. This comprises the bulk of the discussion on this thread.
Not all customers have observed this, nor view it as an "issue". See related thread with counter point.
I've already posted on the notebookreview forum and thought I would also leave a message here as well to cover all forums to get some more feed back.
I have tested this out a few times now, and I get a faint burn in (ghosting) when using a dark background and even a light blue backgrounds when rebooting the system immediately after downloading and installing some software. When this was first noticed, I just booted up to IE 9 and the google page with my favorite sites on the extreme left side for about a minute, than I rebooted the system. During the boot up, I could see the faint outline of the task bar at the bottom, the favorites vertical line that seperates the favorites from the main google page.
One or more members with the X220 on the notebookreview forum have noticed the same thing, and wonder if anyone else has seen this as well. Trying to figure out if this is wide spreed or just a few bad panels.
One picture of the vertical line is posted on the link below.
05-15-2011 05:14 AM - edited 05-15-2011 05:16 AM
Here is a better picture of what I'm seeing....
1. Two white arrows show the faint ghosting
2. Red arrows show light bleed
05-15-2011 12:41 PM
Yep, as much as I love my new X220, this is a definite issue with the screen. Is there any idea on A) whether or not this could degrade the quality of the panel moving forward and B) if anything can be done to correct it?
05-15-2011 01:35 PM - edited 05-15-2011 01:36 PM
No, the effect is not burn-in, but is an artifact of what is known as "Response time compensation" RTC, or otherwise known as LCD "Overdrive." The effect should be called "Ghosting", not Burn in.
It is usally done with TN and VA screens, but I guess they used a similar technique on these screens, in order to increase the response times.
05-22-2011 06:57 AM
05-25-2011 04:31 PM
Just got my X220 yesterday and I already noticed this issue. This is very apparent and a real problem. I also have the aforementioned backlight bleed in the attached pictures, but the LCD ghosting is a bigger concern, as I'm worried this will get worse with age. Can someone from Lenovo comment on this?
05-25-2011 05:10 PM
Modoc - welcome to the forum!
i believe SR45 stated somewhere on the notebookreview.com forum that the ghosting artifact is tied to the intel control panel's power-saving feature and isn't a flaw in the display itself. my X220 doesn't ghost and i have that feature turned off.
perhaps SR45 will update this thread with his findings. it would certainly be appreciated.
Share your input on the Retro ThinkPad Time Machine
05-26-2011 08:57 AM
OK, i went into the Intel Control Panel, the "power saving feature" is only an option on battery, and I haven't had the machine unplugged at all yet, so it's not that. I did change the default power plan in the Intel Control Panel from Balanced to Maximum Performance, and I also noticed that the refresh rate on the panel was set to 50Hz rather than 60, so I bumped it up to 60.
I'll update in a few hours on whether or not this has any effect on the image burn-in / ghosting issue.
05-26-2011 09:25 AM
Well that didn't take long, it is still showing the burn-in regardless of the settings change. Dealing with tech support will be a pain on something like this, and even if they agree to replace the LCD there's the possibility of getting a new panel with dead pixels, or other issues.
Unless someone has any bright ideas this thing is probably going back, charging a premium for an upgraded panel that has burn-in issues is pretty lousy.
06-03-2011 08:20 PM
I have the exact same problem. I noticed that I was getting this pseudo burn-in (and also quite a lot of backlight bleed). I returned my x220 and ordered a new one, same configuration. The new one just came, and it has the same ghosting problem as the first. Note that the ghosting does not take hours to occur: all I need to do is leave my web browser open for about fifteen minutes and then switch to another screen with dark background, and the UI elements will appear faintly burned into the screen, all over whatever text I'm processing (I use a text editor with a dark background, for programming). This is totally unacceptable, and I'm very disappointed. At this point, I don't know what to do: I've tired both linux and windows, and returning the laptop for a new one. It seems like I am going to have to return this second one too, and I don't think I am going to try and get a third laptop. This is very disappointing, because the rest of the compter is very nice.
Has anyone NOT had this problem with the IPS displays on the x220? Has anyone had this problem and fixed it? Can someone from lenovo please comment? More than anything, I want to be able to own this laptop and like it, but I can't when I've been convinced that the "premium" display has consistent defects.