IPS glow. Good or bad?

[HarveyDG]

Hello,

I recently placed an order for a refurbished Dell U3415W monitor. However it was brought to my attention that the monitor has some minor IPS glow (that's the only problem with it). So I asked the retailer to send me some pictures showing the problem. Now I don't think it's that bad, but obviously it's good to get a second opinion. So what do you guys think? Is it an acceptable amount of glow or not?

Here's an image of it a dark room:

And here's an image of it in a dimly lit room (ignore the bright spot towards the middle of the screen at the top edge, that's just a reflection.):

 

[Dunlop0078]

I would say that's fine. Unless it looks worse in person, all I am seeing is a bit of bleed on the top left and right. My IPS panel is no better.

 

[Kaiketsu]

there's almost no glow, only BLB.

 

[HarveyDG]

I would say that's fine. Unless it looks worse in person, all I am seeing is a bit of bleed on the top left and right. My IPS panel is no better.

According to the retailer Dell confirmed with them that this monitor is well within their (Dell's) acceptable parameters for a brand new monitor straight off the factory.

there's almost no glow, only BLB.

Perhaps I got the two mixed up. In that case would you find this an acceptable amount of BLB for a monitor?

 

[ko888]

The top two corner edges look like backlight bleed to me. I use an IPS panel and I don't see backlight bleed like that. IPS glow will vary with viewing angle whereas backlight bleed won't.

 

[HarveyDG]

The top two corner edges look like backlight bleed to me. I use an IPS panel and I don't see backlight bleed like that. IPS glow will vary with viewing angle whereas backlight bleed won't.

So would you say that this amount of backlight bleed is really bad?

 

[Kaiketsu]

Well, I've seen worse. If you're OK with the price and there are no dead pixels or dust, I'd keep it.

 

[HarveyDG]

Well, I've seen worse. If you're OK with the price and there are no dead pixels or dust, I'd keep it.

Yeah, the price is good and there's no other issues with the monitor (according to the retailer anyway). It's about £100 cheaper than buying a brand new monitor, it comes with a three-year warranty, and the customer service I've received so far has been very good. I'll probably keep it, after all I can always send it back and receive a full refund if I'm not satisfied. But would minor backlight bleeding like this cause me any problems in the future, and it's only visible on a dark background correct?

 

[bigpinkdragon286]

Some people go nuts over this, some don't. If you can accept it, that's what matters. How many black screens are you planning to be looking at? If you're watching a movie or playing a game, are you more involved in looking for defects in the screen or are you focused on the story or action and oblivious to the flaws?

Personally, I would say your example photos look pretty decent. The back light bleed that's been pointed out and the glow are easily tolerable, but that's only my opinion. It's going to be hard to find an LCD monitor that can eliminate back light glow without some form of back light control, such as dimming or turning it off for black areas. It's hard to change the nature of LCD technology, and I'm not sure how you're going to manufacture an LCD panel without some modicum of pixel pitch.

 

[PsyKhiqZero]

When the monitor is in use I'll doubt you even notice. The BLB is far worse on my lg 34uc88. Although Id have him send a pick with the osd on showing the brightness setting. Just to make sure he didn't crank it all the way down.

 

[HarveyDG]

When the monitor is in use I'll doubt you even notice. The BLB is far worse on my lg 34uc88. Although Id have him send a pick with the osd on showing the brightness setting. Just to make sure he didn't crank it all the way down.

Thanks for that. I just sent them an email asking for that exact picture.

 

[PsyKhiqZero]

The brightness ahould be about half way. It shouldn't be all the way up as that is usually too bright for normal use.

 

[ko888]

Ask for a picture of the display when it's set to a luminance value of 120 cd/m².

 

[PsyKhiqZero]

That would be ideal, but i havent seen a display that actually lets you set the lumins. Just a scale between 1 to 100.

My previous setup had 3 identical dell monitors. To hit 120, 1 was set to about 30 while the other 2 were about 75.

 

[HarveyDG]

The brightness ahould be about half way. It shouldn't be all the way up as that is usually too bright for normal use.

I think the on-screen display setting should be set to 75 for brightness, at least that's what Dell's factory calibration is for this model. I'll ask them to send images with the brightness to 0 (or the lowest value), 25, 50, 75 and 100.

Edit: Also according to the review here, to get a luminance value of 50cd/m2 they had to set the brightness value via the on-screen display to 9. I don't know if this is completely different for every monitor, or if it helps, but I just thought I'd share that piece of information.

 

[THK]

Various degrees of IPS glow you'll have on ANY IPS screen. Regarding the backlight bleed you have in the corners, I have a slight bleed in the right corner too, but I got used to it - I don't even see it, since I rarely use a completely black screen. I would be more worried about fine-tuning the colors, for best possible accuracy.

 

[ko888]

A brightness setting of 28 should give you the ideal 120 cd/m² on the Dell U3415W:

 

[HarveyDG]

A brightness setting of 28 should give you the ideal 120 cd/m² on the Dell U3415W:

Wow! I've sent an email requesting some more pictures. Specifically pictures showing the monitor at a brightness setting of 0, 25, 28, 50, 75 and 100. Along with pictures of the monitor from different angles. Hopefully they get back to me tomorrow with the pictures, and once they do I'll post them in here.

Thanks for the help ko888, it's greatly appreciated.

 

[HarveyDG]

So the place I ordered the monitor from sent me the pictures I requested.

0 brightness:

25 brightness:

28 brightness (different angles of the monitor as well):

50 brightness:

100 brightness:

All the pictures have a contrast setting of 75 by the way, and all previous pictures had a brightness setting of 75. This is what the guy said about the pictures in in his email...

"Our engineers advised that there is still an element of overexposure going on, which is pretty much unavoidable given our available equipment and the conditions. You can see this clearly on some of the OSD shots, that appear much brighter than they naturally would. As before this will have the result of exaggerating the backlight issue, so you are seeing it in the worst possible way (which I suppose is ideal, as that won’t be how you use the monitor daily)."

So what do you guys think? I think it looks pretty good, but as I've said before it's always good to get a second opinion.

 

[PsyKhiqZero]

Buy the panel already lol. Pictures always make BLB look worse then it is. And this panel barely has any in the pics.

 

[HarveyDG]

Buy the panel already lol. Pictures always make BLB look worse then it is. And this panel barely has any in the pics.

Haha! I actually ordered it prior to opening this thread, but I held back on payment because I wanted to see some pictures of the issues they mentioned. However after seeing all these pictures I sent payment, and told them to dispatch the monitor (it should arrive tomorrow). After all if (once I've seen it in person) I'm not happy with the monitor, I can always just send it back and receive a refund.

Thanks for the help PsyKhiqZero, and of course everyone else.

 

[ko888]

At a brightness level setting of 28 it's quite acceptable.

75 would be way too bright and will adversely effect colour accuracy.