lcd panel bleed quotation

Many of our monitors and TVs suffer from an affliction. It is a scourge that deforms our beautiful displays and breaks the immersion into our lovingly rendered games. It has ruined many a pristine LCD. It might have already affected your friends, neighbors, and loved ones. It’s called backlight bleed, and it could happen to you.
What is screen bleeding? If you’ve ever seen a monitor or a TV with white light escaping from around the edges of the display, you’ve already witnessed it firsthand.
Your display has a panel consisting of pixels at the front, each of which changes color to create images. These pixels are illuminated by something called a “backlight,” which is behind the panel. Backlight bleed occurs when the seal between that panel and the frame of your display allows some white light to “bleed” through. This inconsistency has also been called “screen bleeding” or “flashlighting.”
There’s another form of backlight bleed called “clouding” where the backlight can be seen more brightly through the panel in certain areas, giving the screen a cloudy and uneven look. Clouding can occur when the panel has had pressure exerted on it for a prolonged period of time.
One thing to keep in mind is that you might be seeing something that looks very similar to backlight bleed if you have an IPS panel, but this is actually a phenomenon called “IPS glow.” There are multiple kinds of LCD screens and IPS (In-Plane Switching) panels that often get a sort of glow in the corners of the screen when they are displaying dark images. It’s important to note that the steps listed in this article to help reduce backlight bleed will not help with IPS glow.
We all know that we aren’t supposed to touch our screens, but that isn’t just to keep our smudgy finger oils off. It’s also to keep the seal between your panel and the display frame tight. By mishandling or even simply jostling our displays, we risk loosening the panel at the edges and allowing light to escape.
That said, it doesn’t always come down to user error. Backlight bleed can start long before you take your display out of the box. The damage could have occurred while the display was shipped, stored, or the manufacturer may have never installed it correctly to begin with.
If you just bought your display and it comes with any amount of backlight bleeding out of the box, you should return it immediately. Any respectable retailer will offer a free return for significant issues out of the box. In the event they do not accept the return, look up the manufacturer and try to file for an RMA (Return Merchandise Authorization.) Keep in mind that attempting to fix your TV or monitor yourself may void an active warranty. Returning it and getting a new one is a much safer alternative.
Well, if your warranty is expired, the display can’t be returned, and the bleeding has progressed to the point where it’s become too distracting to ignore, then there may still be a way for you to fix your display.
Take a screwdriver and slightly loosen each of the screws on the back of the display. Just a half turn should be plenty. It’s possible that the frame was too tight and was pinching the panel.
Unplug the display again if this did not solve the issue. Next, take a microfiber cloth and gently rub the areas on the screen where you’ve seen the bleeding. Do this in a circular pattern. Apply just enough pressure that you see a slight warp on the screen. What you are attempting to do is massage the panel back into place.
If you’ve completed steps 5-7 several times with no success and are looking to take more invasive measures than there is one last thing that you can do. You can pin the panel down, sealing in the backlight by dismantling the display and applying electrical tape around the edges of the LCD. This method is the most likely to damage your display and should only be done after all other avenues have been exhausted.
Now go forth, armed with the knowledge and procedures to treat those who’ve been hurt by the horrid white rays of backlight bleed. Tell your friends that the dark days of playing Counter-Strike through a poorly sealed screen are finally over.

IPS (In-Plane Switching) monitors, leverage liquid crystals aligned in parallel to produce rich colors. IPS panels are defined by the shifting patterns of their liquid crystals and the liquid crystal"s ability to shift horizontally creates better viewing angles. The creation of IPS monitors was to provide a solution for the limitations found in TN (Twisted Nematic) monitors.
As a result, you can see different colors at the corners of the screen from each angle when it displays dark patterns. Compared to light leakage, this effect is a natural phenomenon on IPS panels.

I"ve never had this problem with a camera. It isn"t just Canons, btw. The Nikon F4 is often criticized for having this problem. Thankfully, mine doesn"t have it. Neither does my T90 (but it doesn"t have the command back) or my T70-- or my EOS Elan IIe, fo that matter. Or my Nikon N80. I also have a Pentax Super Program that has a small LCD panel that doesn"t show any bleed.
The only device I own that has had an LCD bleed problem is a Sharp calculator I bought new back in 1980. It was a gradual problem, but it eventually went completey dark a few years ago. Too bad, I"ve always liked that calculator. I see copies on eBay from time to time that do not have this bleed problem. So I wonder about storage. As it so happens, I kept it out in my shop, which is frequently NOT air conditioned, for years (I live in Houston, and it does get hot here during the summer). Perhaps the high temperatures it encountered out there contributed to the problem in a major way?

I think you need to understand that there are LCD monitors, and there are LCD monitors ! I have seen "so called " professional monitors where the issues with the backlight and the bleeding of colour , meant that the delta E variances were huge from area to area.

Thanks for your help MiguelD. I did check for blown pixels with several YouTube RGB videos and they seem ok as far as I can tell. I was really looking forward to the 32" display size, but even ignoring the bleeding on dark images, you can"t use the left and right 2-3 inches of the screen without shifting my body to look at that area straight on and eliminate the bronzing / orange coloration. Defeats the purpose of the size.
I have not seen a Studio display in person yet. I am sure it looks great and functions well. However, it is a single LED panel (no local dimming), 8 bit color, and around 80% of Adobe RGB (much higher % of P3). For me, since I do some printing, the Adobe RGB % was more important to me than P3. But if one cares about the form of the monitor and the fact it incorporates a camera and speakers in the monitor itself, then those are obviously huge selling points. One concern to me about it is the same I have with my current 27" imac. That is, that given the large resolution, everything looks sharp. It is more difficult to judge images for focus and sharpening with such a high resolution monitor.
I had read that the uniformity of the BenQ panels had improved and some really wax rhapsodic over this particular model (SW321C). Your photos do not look good to me in terms of uniformity. I would be tempted to try another BenQ panel unless you have decided that the size is too large for you. This model gets generally positive reviews. I do sometimes wonder if the reviewers get cherry-picked panels for review.
It"s amazing how bad it looks as soon as you look at a darker or low key image. After I started this thread, I made my wife sit in front of the BenQ screen and look at the corners. She thought I was doing my usual complain about everything / perfectionist thing, but the bronzing in the corners and bleed was immediately obvious to her. I really just want / need a new display that looks decent without obvious problems anyone would notice.

I"ve never had this problem with a camera. It isn"t just Canons, btw. The Nikon F4 is often criticized for having this problem. Thankfully, mine doesn"t have it. Neither does my T90 (but it doesn"t have the command back) or my T70-- or my EOS Elan IIe, fo that matter. Or my Nikon N80. I also have a Pentax Super Program that has a small LCD panel that doesn"t show any bleed.
The only device I own that has had an LCD bleed problem is a Sharp calculator I bought new back in 1980. It was a gradual problem, but it eventually went completey dark a few years ago. Too bad, I"ve always liked that calculator. I see copies on eBay from time to time that do not have this bleed problem. So I wonder about storage. As it so happens, I kept it out in my shop, which is frequently NOT air conditioned, for years (I live in Houston, and it does get hot here during the summer). Perhaps the high temperatures it encountered out there contributed to the problem in a major way?

Light leak/ bleed is backlight shining through where it is not supposed to. Most often it can be seen on edges of the screen and in some cases as smaller spots in various areas.
looks like a small bright spot or some times similar to a normal light leak and are caused by some internal components like screws or sharp board edges in the monitor/tablet/phone pressing against some of the panel layers causing them to stretch and letting more light to go through. In some cases pressure applied at the factory by workers during assembly can cause a pressure stain.
Critical Issue (CR) - is the Top Priority shipping blocker kind of issue. If Major issue is discovered production stops and root cause is investigated. Example would be panel setting itself on

If you’re like most people, your iPhone is your life. That’s why you absolutely need it to be functional. Right now, yours is having a problem that is concerning you, though. You know what a cracked iPhone screen looks like. Your phone… is doing something else altogether. Something is definitely wrong, but you’re not sure what. It is quite possible that what you’re looking at is iPhone screen bleeding. What is this? What can be done to fix it? Don’t worry, we have all the answers you’re looking for!
There is a little confusion over the term iPhone screen bleeding, because it can actually be broken down into two typical types: backlight bleeding and pixel bleeding. Backlight bleeding is when a bit of light shines through around the edge of the screen. This type of screen bleeding is much more apparent when the device is viewing darker images, because the backlight is white and it’s more visible on a darker background. Pixel bleeding, on the other hand, often happens from dropping your phone. When this happens, you will see rows or columns of pixels displaying black, purple, or oddly colored patterns. Yikes! That can’t be good!
You’re looking at your iPhone screen bleeding, and you know this isn’t good. What does this mean for your phone? Do you need a new one? Pixel bleeding is an indicator that the LCD has sustained significant damage. Even if it’s not that badright now, it will be soon. Unfortunately, it’s a sure thing that it will get worse over time. Regardless of how bad the pixel bleed is, the entire LCD will need to be replaced. This means your next step is to find a Miami area cellphone repair technician. Don’t waste any time booking a repair appointment to have it fixed.
This isn’t a DIY task. Because a pixel bleed is often the result of impact, it’s quite possible that the glass is broken as well. The good news is that you don’t need a new phone. The not-so-good news is that there is no simple way to fix a bleeding screen without enlisting the help of a qualified phone screen technician.
Lucky for you, you live in Miami and can contact us here at RapidCellFix. We specialized in bringing phones back to life when everything seems lost. Our technicians will fix your device in a blink of an eye, whether it’s broken glass, bleeding pixels, or both. When you see how quickly and how completely we fix your broken iPhone, you’ll know why we are so popular!

Liquid crystal display (LCD) is a flat panel display that uses the light modulating properties of liquid crystals. Liquid crystals do not produce light directly, instead using a backlight or reflector to produce images in colour or monochrome.

To be frank, approximately a week ago I got my iMac retina unit. I waited probably two or three days to open the package, due to my busy work schedule. once I finally got around to opening it, I plugged it in and the first thing I noticed was the backlight bleeding issue that you"re experiencing. Although my bleeding issue wasn"t nearly as bad as yours, I figured it might just be normal for the screen to look like that while it"s black. During normal use, the backlight spots are not an issue at all. The only time I would actually see them was when the display would go dark during gameplay, or while watching a video. Like you, I became extremely frustrated because I spent over $3000 on this computer. So I took it upon myself to go to a local Apple Store, and I started playing with one of their iMac retina units. While at the Apple Store, I restarted ther unit several times to see if I could see the back light while the screen was dark. Sure enough, their screen looked immaculate. At this point I was pretty frustrated, so I drove home and the first thing I did was call Apple Care. Their support line was very helpful, and they told me, because I"m in my 14 day period, I can return it for a new one. I got to give them one thing, got another unit on its way, and I should have it in a couple of days. Hopefully, through the grace of God, this new unit has no issues.
One last thing, I believe your issue might be the construction of the unit more so than the screen. I noticed by pushing on the borders of my screen, the bleeding would kind of disappear and reappear. Or, the screen could be bad...Wasn"t too sure...
Ms.Josey
Ms.Josey