Very thin lines on my LG LCD

Hi guys,

I have enjoyed my 1705 immensely. I have an LG WUXGA screen.

I noticed right from the start tiny little horizontal lines on my display. They are extremely fine and look like they are between pixles. They are not as pronounced at the top of the screen but they are there.

I wish I knew a better way to describe this problem. Other than if I had a high res photo or backround the smoothness of the image is distrubed by these fine lines.....they are less than the thickness of a piece of paper, however because they are between every row of pixles in a horizontal pattern that means there are alot of them. because they are white lines it ever so slightly takes away from the intensity of darker colors. if I get real close I can clearly see them. This does not happen vertically.

I have never seen this before in an LCD, and my best guess might be that the little light bleed I get might be making this worse by lighting up the screen pixel structure from the wrong side.

Anyhow Would any of you guys and gals that have the LG WUXGA screen please check your screen and let me know if you see it. It does bother me because I can see it at my average viewing distance. (my near sight is very good though)

Other than this, the screen looks great....but I need to know if this is just the nature of the screen....or if I have a problem.


Thanks for helping a fellow Dellian....

Tim

 

Not on mine.

Do you see them on an external monitor or with hardware acceleration turned down?

It could be hardware or driver issue, so hopefully you could do some basic steps as above.

I’m sure you’re in warranty so I would start a ticket with dell as soon as possible.

 

I noticed that on the first day i received it. it's on my left side of the screen, yours is from the right.

IF u're happy with ur E1705 I recommended Don't exchange it, you might get another replacement with worst screen like samsung or sharp. I have a new thread of comparison in colors of Sharp and LG with more details.

 

Hi there,

khanhfat mine is more on the left side of the screen too.

Interesting. I had never seen anyone mention this before, it would be interesting to know if any others might start to pick up on this.

hydra You bring up good points. On an external monitor I did not notice this problem, I did notice it at all power/performance levels as well. even at various brightness settings. I am starting to think that it's more in the nature of the screen. Not that that makes it ok, but perhaps if only a couple of us have this problem it might be a limited run defect......

Anyone else??? All you LG owners take a good look in the lower left quarter of the screen. Are Khanhfat and I the only ones with this problem????

Tim

Just a note, I will be gone for the next week. if you don't see me posting reply's you know why. I will pop back on here and see if anyone else has this problem.

Thanks all.

 

I bought a 9400 about a month ago. Got 2 replacements so far.
I opted for the Truelife screen.
1st and 2nd one had a LG [lpl] screen. 3rd one which I got 2 days ago has a Sharp [shp] screen.
I noticed on the LG screens some thin lines but mine are diagonal, like this: \
Easy to see on white backgrounds when brightness is on max.
I have no problems with my eyes and the lines can be seen from ~20 cm.
3rd laptop has a Sharp screen and there are no lines like on the previous 2!

Anybody else with this issue?

 

I don't see that on mines. You should call dell

 

I don't wanna call again. Dell will send a different screen than LG, and I dont want that to happend.

 

Bumpity bump....

anyone else out there with this problem????

Thanks

Tim

 

Hi guys,

I have a Dell Vostro 1510 with the 15.4 inch WUXGA (1920*1200) screen and have the same problems as you are describing (the horizontal lines issue). Aside from this page, I also found a mac forum where some powerbook users were having the same issue. One interesting thing is that all their posts and yours too are from 2006 - my vostro is brand new, June 2008.

From the mac forum I learned that it's not a gap between pixels, it's that every second row of actual pixels is brighter than the rest, or possibly more susceptible to backlight leak with certain colours. Close-up macro photographs of the screen confirm this. It's more prominent on browns and greys than on other colours, and this fact makes photographs more grainy than they should be, skin-tone gradients are affected in shadow very easily.

The horizontal lines are similar in effect to an inkjet printer which has dirty heads.

Just like you, they are not as pronounced at the top of the screen, and are worst along the left hand side.

My screen is also an LG-Philips one, LPL3e01 according to the registry.

This is my second screen - 1st one had a dead pixel but I didn't have it long enough to notice this issue. I don't know what make the first panel was but it had more even backlighting than this one, for certain.

I'm about to return this one (or try to) but am interested to hear more about the alternatives possibly being worse, as referred to by khanfat.

 

From comparison photos, LG had better quality displays than Sharp.. I wonder what happened..

 

My lg screen on my aptop seems fine. No lines

 

Right, some experimentation yields interesting results.

The graphics card in my laptop is a discrete unit, the nVidia 8400m GS.

One of the options in the nVidia control panel is to do with the "powermizer" settings.

There's a tickbox which says "Extend battery charge by using less power for the display". With this box ticked, the horizontal white lines problem goes away, or very nearly. If you look in the worst affected areas very closely, with a brown, beige, grey area, you can just about make them out, but nothing widespread - it's just on the border of visibility.

However, the whole reason that box became unticked on my machine in the first place is that with a dark (but not black) background or colour on screen, my lcd suffers from a sort of strobing effect. Waves or ripples appear to be moving up the screen - not distorting the image but more like shadows passing over it. It's easier to see when you are not looking directly at it and with the backlight on its lowest setting. When I turn the power-reduction back on, that problem goes away and I get the horizontal lines issue again.

To test if you have this problem, fill your screen with a solid dark grey and position your mouse cursor in the centre. Focus on the pointer. If your screen is the same as mine (and others) you'll detect the rolling waves.

It's because the backlight tube is underpowered as a result of the checkbox setting - it's unnoticable on light backgrounds but may contribute to eyestrain (I suspect it's contributed to mine). Noticable in films and video quite often.

So it looks like there's a problem with the screen whether underpowered or on normal settings - it's just two different problems.

I'm very interested to see who else has both problems or who has only the one, or even no problems at all. If we can get a good sample of results then we can establish the characteristics of this lcd unit and then determine whether or not a replacement is going to make any difference.

 

Update: A replacement panel has the same problem.

I've also done macro photography to confirm.

Dell are replacing the mainboard tomorrow. They may have bad kit on this occasion, but the service has been incredible - 3 engineer visits to my house, within a day of asking each time.