X220 IPS Backlight bleed.

Then why don't they offer IPS on the X1 and the T420s, which are supposed to be "wow" laptops of the ThinkPad line-up?

 

...perhaps because the 12.5" IPS panels were already being made for the tablets, making it rather inexpensive to source the unit without having to make a new panel.

just a guess.

 

I'm hoping that as Lenovo figures out how to do this at a reasonable cost, they'll find a way to bring IPS to other ThinkPads. In some ways a T420 with a WXGA+ IPS is a better notebook for me as I don't need a ton of mobility. I prefer quality to quantity, which is why I have a X220 and a R60e.

 

Today I received my X220 with a build date of 6/25.

It has backlight bleed, thankfully with brightness set to lower levels its not really noticeable unless you know where to look.

This is a picture I took with the brightness at 13 IIRC and my crappy point and shoot camera's exposure set to the highest level.



Uploaded with ImageShack.us

The noticeable points when viewing a fullscreen black image are the one in the middle of the lower part of the screen and the one at the lower right part, which for some reason has not been captured by the camera.

Another thing I noticed: the angle at which you set the lid affects the backlight bleed, meaning that the cause for the backlight bleed lies in the design of the lid which exerts torsional forces across the panel, allowing light the backlight to bleed through. One can test this simply by pressing gently against the display's bezel at the points where B.B. occurs.

Another shot of my display, with the same camera settings but different lid angle (with the camera facing the display as before):



Uploaded with ImageShack.us

Notice how the bleed at the lower right side of the screen (which it seems most owners complain about) appears stronger.

Could Lenovo have paid more attention to this issue? Sure. For now I'm not too concerned. The screen is beautiful and the backlight bleed I can live with. Perhaps in later batches this issue will be resolved and owners who can't live with the bleed can have their displays replaced. A DIY solution is not out of the question too (usually duct tape placed carefully around the edges of the panel helps, in desktop monitors at least).

 

Trouble with the bleed on the X220 is that it's exacerbated by the fact that it's only a 12.5" screen, so it reaches further into the screen than on a bigger screen. My Dell 22" TN has bleed all around the edges but because the screen is so big, it's not so intrusive.

I do notice it when watching video on a regular basis (black background and brightness turned up) but am happy to ignore it - life's too short. It's threads like this that unnecessarily turn it into a big issue (IMHO).

I do agree, however, that if Lenovo's engineers find a fix, it would be nice to have it sorted. Definitely won't be losing any sleep over it though.

 

Indeed. I use a dual 26" IPS monitor setup daily, both of them have backlight bleed spots but due to monitor size they are not bothersome.

The only thing I find curious is something which shows both on the pics I uploaded and SR45's pic from the first page of the thread. Its that the 'blooms' at the bottom are more blueish on the left and warmer in tone towards the center and right parts of the screen.

Perhaps this hints at the LED configuration used to create the white backlight (combination of blue and yellow LEDS? I thought laptops used blue leds coated in yellow phosphor to create white light).

It would be interesting if more people posted photos of their displays in similar conditions so we can get a better feel for the various 'backlight deviations' out there.

As I said before, something tells me that the community may discover a DIY solution to the problem before Lenovo's engineers (as is usually the case). If the bezel is easily removable, perhaps a brave soul could see if relieving pressure points across the bottom of the screen helps things - or if some duct tape is needed!

 

RETURN THAT...

I can't believe how bad some of these bleed issues are...

NONE of my screens (including cheapo non-led LG 55" TV) have a bleed issue.

Add the fact that these screens are puny 12". Any screen issue will stick out easily.

Ordered mine on the 2nd, estimated ship date 17 -_-

If i see any issue at all, I swear I'm returning it.

 

Both my old Dell Inspirion and Latitude laptops had far worse light bleed. You won't notice any bleed at all in when working on that machine. But I'm getting tired of saying that.

 

Yeah the bleed looks greatly exaggerated in long exposure photos. Its not noticeable during use, it becomes annoying when you go looking for it (fullscreen black image, complete darkness etc.)

 

Lucky you.

My T60s have all had backlight bleed.

As did my X200s.

As did the first-gen MacBook that I bought back in early 2006.

As did the PVA panel that I installed myself in my X200.

As does the 42" Akai TV that I've got.

As does the L191p monitor on my desk.

As does the random Dell monitor on my desk at work.

As does the display on the T61 that I'm typing this on.

And I don't notice any of them unless I make a point of looking for it.

In fact, the only LCD I've got which *doesn't* have some level of backlight bleed is the IBM ThinkVision L200p that I've got at home, and honestly that's probably luck more than anything else.

 

Not so lucky anymore. My X220 has like 5 bleed spots on the bottom.

Not worth shipping it back for but still noticble sometimes with dark backgrounds.

 

Ok, now it's ghosting too....

I swear the light bleeding is getting worse...

Too bad I dont have onsite warranty. Guess i'll be sending it in, in a few months.

 

Nope, it is much cheaper than you presume it to be.


LP171WU8 only costs less than 125 USD as per item.

NEW LG 17.1" LP171WU8 (SL)(B1) SCREEN?"EMS EXPRESS!!" | eBay

A+ grade LP125WH2-SLB1 only costs you 62.5919 USD as per item at current currency exchange rate.

È«ÐÂÔ­×°IPSÆÁ A+ LP125WH2 SLB1 IBM X220 X220I ±Ê¼Ç±¾Òº¾§ÆÁÄ»-ÌÔ±¦Íø

 

isn't the DC2 panel the LP171WU8- TLB1, not the SLB1?   the TLB1 sells for $500 without the HP cable kit needed to drive the display (which is apparently another $160+).

http://forum.notebookreview.com/hp-...0w-owners-lounge-part-2-a-23.html#post6720999

 

12.5 IPS-> LP125WH2-SLB1

15.6 IPS-> LP156WF3-SLB1

17.1 IPS-> LP171WU8-SLB1

 

if that's true then why does the TLB1 sell for $500 and the SLB1 only $125?

also, according to the thread i linked, the TLB1 is IPS.

your post above is just a copy of this: http://www.5i01.com/topicdetail.php?f=240&t=2130057&r=2&p=5#30002100

definitive evidence would be appreciated.

 

The information you referring to is direct from mobile01.

I am also the mobile01 member who posted this relevant information weeks ago.


-------------------------------------------------------------


Back to the topic

15.6 LP156WF3-SLB1

http://thinkpad.cn/forum/attachments/month_1104/20110402_ce57691c0ab2983dae87360mLcerb1gz.jpg


http://thinkpad.cn/forum/attachments/month_1104/20110402_36711df754c12c373b86T63Kj5fuisim.jpg

12.5 LP125WH2-SLB1

http://i1226.photobucket.com/albums/ee415/larrabee2/110515.jpg

17.1 LP171WU8-SLB1

http://ecx.images-amazon.com/images/I/810aD2M7SYL._AA1500_.jpg


There is no LP171WU8-TLB1 available in the market.

Lastly, for color accuracy, I would choose 12.5 IPS instead of these wide gamut panels as both of them does not worth extra cash at the expense of software solution( Chroma Tune=HP Display Assistant) by Portrait Display.

 

thanks for the pics.   due to their massive size i had to convert them to links per forum rules.

apparently there is: HP EliteBook 8740W LP171WU8(TL)(B1) LAPTOP LCD PANEL 17" MATTE WUXGA

even though it's for the 8740W, it could be a TN panel.   it's just odd to see it at 3x the price of IPS.

agreed.   for general use (especially when traveling light) the X220 is hard to beat.

 

Just got my X220, might post some pictures later when I get a new camera (only have my iPhone4 right now).

Backlight bleed is minimal and there are a few very small blooms along the top of the screen.

Regarding ghosting, I haven't tried a formal test yet but from moderate usage over about a week I haven't noticed it at all. Overall I'm extremely happy with my decision to go with the IPS panel rather than the TN.

 

I have backlight bleed from the bottom of the screen like 4-5 little flash lights pointing upwards but is faint and only noticeble only on bootup for me. I think its fine and not an issue.

I have not seen any ghosting issues.

 

......................

Lol, from the guy complaining and telling everyone else to ship theirs back. Change of heart?

 

My sentiments exactly

 

It's worse now. Its ghosting a lot...

I'll be getting the screen replaced. Just not now as I need it for work.

 

Is that much of backlight bleeding too much?
Here the same lG panel used in X220 but on Acer V3-571g:

60% brightness:



100% brightness:



Is it acceptable?

 

It's your computer, only you can answer that question.