bubbles on lcd screen manufacturer

I was able to plug this old LCD into a TV, which I think it"s 720p only because it worked with the 1366x768, and when changed to 1920 the image was worse. At 1366 all icons filled the screen, so a better TV would be suitable for Windows 10. The image doesn"t present any sign of bubbles, so it"s OK.

I am not seeing a 3rd possibility, because it"s highly unlikely the monitor would just create these cloud spots all of sudden after 2 hardware changes. If this is what happened then it"s a huge coincidence.

LOCA, used during the building of LCD displays, are the industry standards for assembling displays within certain size ranges and for particular end uses. They are commonly used in high-demand, mid-sized monitors in automotive and aerospace applications, among others.

The multiple-layer assembly approach using LOCAs results in dramatic improvements in brightness and clarity of images, minimizes or eliminates issues of light refraction, and improves the durability of the display.

For each of the causes noted for bubbles in LOCA, there exists a corresponding set of solutions or proper behaviors that can minimize or eliminate it.

Choice of a low-shrinkage material -- High shrinkage of the adhesive layer after application can result in the development of voids, which can appear as bubbles.

Choice of proper curing mechanism -- UV curable adhesives are generally more reliable and less susceptible to bubble formation. Thermal curing materials can cause adhesive flow and air gap generation.

Automated dispensing process -- Manual dispensing, as noted above, is inconsistent and prone to mistakes and potential voids in coating. The use of automation is an obvious solution.

Autoclave or vacuum during bonding process -- The incorporation of an autoclave stage or introduction of optimized vacuum conditions will result in more consistent thickness, curing, and proper degassing of the adhesive when bonded.

Degassing step before dispensing -- Degassing before application remains one of the most effective and simple approaches and can often be enough to eliminate bubble issues on its own.

Chase Corporation, Westwood, Ma., founded in 1946, is a leading manufacturer of industrial products for high-reliability applications with a global customer base, operating in diverse market sectors. The Resin Designs division specializes in the manufacture of polymers for industrial uses, consumer coatings, and adhesives. Our outstanding manufacturing and technical support groups can provide your organization with a reliable global supply, unmatched quality, and superior technical support.

The big bubble is adjacent to the edge and might indicate air leaking in, but not the small bubbles. An autoclave will not help with the small bubbles, and the big bubble will need re-gluing, which is rather complicated

Pressing will not help, as at least one upper layer glued to the LCD is hard. Repairing is a time-consuming job that requires separating and replacing however many layers are glued to the LCD screen, and damage can easily happen.

Most repairmen will prefer just replacing the screen, as the above can take hours and a mistake may be fatal to the LCD. You might be able to find a cheap replacement screen on Alibaba or similar.

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These pockets general start aroung the edge of the bezel where they can be small as a pin head to about the size of a pea. However, the air pockets will increase as the resin leaks out. Heat, Air conditioning, pressure seems to be irrelevent after the pockets are visible.

What your picture looks like is that something has gotten in between the glass and the LCD. You could probably fix it by opening the device and cleaning/re-seating the LCD against the glass.

As to how did it happen, difficult to say. Possibly what ever glue or mechanism that holds the bottom of the LCD to the glass has come loose. Maybe from impact/shocks or just age. If it"s fairly new, then I would start thinking about manufacturing errors.

There’re more than 300 procedures to produce TFT LCD. The most advanced LCD, in which the array and cell process are highly automatic. Technically, every step in the process can lead to defects, and most of the defects have been eliminated through the development of TFT LCD technology.

In the LC filling process, if the quantity of LC injected is not enough, the spare space will form bubbles. And loose LC containing sealant will result in LC leakage.

Point defect is a kind of defect that some point on your screen don’t display correctly. There are mainly three situations: the point keeps displaying black or whitewhen the screen is working or the point can only display a single color.

For the first two situations, that’s because the circuit on the TFT and CF controlling that defective pixel point is shorted or broken. While the third situation is caused by damaged color pixel.

The production of the circuit and color pixel is under micro scale, and the technology is similar to semiconductor technology. Hundreds of thousands micro materials will be printed during the production process, you can understand some of the materials not being printed correctly, which result in the point defect.

Unlike point defect, this larger scale defect is caused by the failure of external FPC or PCBA, or a bad connection between FPC and cell. Therefore, a bunch of pixels connected to these IC are out of control, and we see those defects.

Usually, assembly of cell and IC is under heat and should be positioned accurately. Problems with IC connection will be checked out very soon, followed by the adjustment on machine parameter.

In LCD, newton’s rings may occur on screen when two glass substrate haven’t been sealed well, so that one of the glass may form a convex lens and lead to light interference.

To avoid this problem, we have to pay attention to the gap distance parameter in sealing process. By the way, newton’s rings has became a method to exam the glass sealing process in reverse .

The black matrix on CF glass or a additional shield bar is used to avoid this problem. So if this problem occurs, we have to check the CF deposition process.

You may notice there are some screens have uneven display, which means some white area appears in dark picture or vice versa. We call this ‘mura’, a word originated from Japanese.

Mura is very common but it doesn’t affect the screen function severely, however it still bring bad look. Hence, many high end display manufacturers have their own standards of mura, and the displays without mura are of the best quality.

Among the causes listed, thickness of the whole cell is the most critical one, and there are many factors related to that. Researches provide a lot of advice to adjust the thickness of the whole cell:

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had the same problem 5 weeks ago. After contacting Dell by phone they suggestet to send some pic after the support member wrote me an email. After one day a call back came and they told me they want to change the display on next business day because it´s a fault. This was done but unfortunatetly during changing some other things got broken and after the third try to repair it Dell offered me a new one which I accepted because the last status was that the fan was working all time on override. So the service was superb and I have a new Adamo.

But now after using it 5 weeks without moving the laptop today a new tiny bubble appeared in the left top corner again. So I do not if to call them right away or waiting a little bit until a second one will appear. But I had the same problem as you when I found the bubbles the first time. Found nothing on the web. And sorry for my english, because i am from Germany and by the way I used the German support Team. And do not forget to tell them that you have a XPS laptop. Then this Supportteam can help you with your Adamo. They are also responsible for Adamo laptops.

I think there are bubbles under my screen, i just got it (monday) and im really frightend, is it dangerous? is it bad for the monitor? i tried pushing around them but it wont work, i think its bubbles because when i try to wipe them they come back after 5-10 seconds. it doesent make any picture/game/video look blurry or anything like that. the monitor is a LG 34UC88-B. appreciate any help!!

i closed my window (its really cold here) and most of them seem to have dissappeared, i wodner if it was fingerprints or something that kept coming back due to the cold? i dont know.

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I just replaced the glass on a s3 and now have a tiny dot in the center of the screen .I have done many screens as well as digitizers on all kinds of android and iphones this is a first for me and am wondering what went wrong.The digitizer did not appear to have any defects and it was done in a dust free box so I don"t think its dust. Its about the size of a pin head and the screen works fine.

For that matter, its not an LCD, stop calling it one. Familiarize yourself on the technology of the devices you"re working on and offering advice about. Knowing how and why a display works will go a long way toward finding real solutions instead of searching around in the dark like a blind squirrel.

(One Drop Filling) high quality displays can be produced. However micro bubbles can arise during this procedure. The micro bubbles are not visible directly after the ODF process,

but visible bubbles can be formed after some time. Using an autoclave can ensure, that no visible bubbles will be formed later and therefore quality and lifespan of the LCDs is increased noticeably.

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It is the tempered glass glue/sticker that cause the bubble...look like that starting to peels over from the glass...remove the tempered glass and you will see that your screen is fine but remember to buy a new tempered glass as the current one will not be useful anymore....

What a bummer. I would be interested in knowing how you get on with OP with the 2 year warranty. My OPO is over a year old and the battery is gradually dying.

Ok, I"ve seen this before several months back on the forum. It"s basically the adhesive coating that is peeling off from underneath the display. In a similar case this one guy had an OPO which this separation was happening all around the edges of the display. It seems to be purely cosmetic...