bubbles on lcd screen made in china

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Ive not had big problems with bubbles and screen replacements have you done these types of repairs before and keep having that problem? It may sound ghetto but when doing window tinting you can use a hairdryer to heat it up a bit and it will stretch out then use a kind of scraping tool to get the bubble out. Should work the same with a phone i wouldnt see why not. As far as the business goes i wouldn"t reccomend doign a glass only type of thing, i would highly reccomend if you"re going to do it repair all phone problems and if you can"t fix it or its totally shot thats fine just tell the customer and dont charge them. Im starting a game console and phone repair business where i am now and for someone your age i would reccomend you try that out unless you live somewhere that you have plenty of clients and opportunity to make money where i am theres not a lot of money going around so game consoles are pretty trendy along with the smartphones. One last thing don"t worry about spending hundreds or thousands of dollars on anything for a business until you already have the business going trust me you"ll get discouraged spending a thousand dollars on something and then finding out you can only make a hundred dollars a week or less on average so pace yourself and start with simple repairs work your way up to complex things and build a large understanding of what you want to work with. As a young person your biggest problem will be people not taking you seriously or trusting you have the knowledge to do something so work on speaking and knowledge and you should be able to get over that hurdle. Hope some of that us helpful.

Well if you have a demand for that in your area then i would say go for it. I have honestly not heard of the things you"re talking about but i have not done many phone repairs just a couple and i didnt have any specific issues. Maybe some of the newer stuff is like that but i cant say i know anything about it. The best i can figure from a google search is that its cured by a screen/digitzer replacement and it could be caused from internal pressure or heat causing weird things to happen. Did you replace a screen on a phone and have problems with bubbles or something this is the first ive really heard of issues like this.

I really don"t understand it seems like overkill to me because i would just buy broken iphones as is and keep a stock of extras rather than spending a ton of money on a machine that does one thing. Best thing i can say is try calling those people and talking to them about it because i like fully disassembling parts cleaning them making sure there are no internal problems and that everything is tight so this kind of thing im not interested in. Youre doing the right thing by seeking more information so just keep on that i couldnt justify getting into this one for the price and two because i like seeing the inside of the phone and double checking everything inside and out.

1) So far in the cell phone repair and refurbish industry and consumable material market, there are the different type of OCA glues custom made for iPhone, iPad, Samsung, LG, Motorola, Sony flagship models.

3) The OCA Tape is a highly-specialized film that offers excellent clarity, light transmitting and adhesion to a wide variety of transparent substrates. OCA Optical Adhesives are usually applied in transparent applications, such as in smartphone and tablet PC LCD displays, touch panels and other devices requiring an optically clear bond.

4) These OCA Clear Adhesive Films perfectly fit with your device and need no cutting before applying such as LG G2, G3, G4, Motorola Moto G2, G3, G, Sony Z4, Z5, Samsung Galaxy S6, S6 edge, S7, S7 edge and so forth.

5) We highly recommend professional installation. We won’t be responsible for any damages to your cellphone/mobile phone that you may cause during the replacement for your defective phones.

6) Easy to remove with no glue residue by using the special OCA Adhesive Remover. Next let’s get a more comprehensive understanding and view of the OCA Adhesive Glue in the aspect of dimensions, property and function of different manufacturers which are Mitsubishi OCA and China Made OCA.

Mitsubishi 250um 3) Adhesion Test Stick the OCA Optical Clear Adhesive film to one clean cell phone outer glass lens to test if it has strong stickiness and is easy to tear up after fitting.

4) Laminating Test In the course of LCD screen display laminating and outer screen glass laminating process we can easily check if the OCA can be easily laminated. There is no obvious difference between Mitsubishi OCA and China Made OCA in the effect of Laminating.

5) Bubble Removing Test After 10 minutes bubble removing process, check the two type of phone screens. Both the Mitsubishi and China Made OCA are in good condition.

6) Bubble Returning Test After a period of time, check the OCA to see if it has air bubbles in it. The China Made ones sometimes have small air bubbles on both sides of LCD assembly.

7) Repair Test Separate the LCD display with the machine, then tear up the OCA glue manually to see if it can be removed easily. Mitsubishi OCA can be torn off completely by hand, while China Made OCA can not.

From the test we can draw a general conclusion: Mitsubishi OCA is better than the China Made ones in term of quality . Until now, I"m afraid you some understanding about OCA film. If you still have any other questions or are looking for iPhone OCA film, iPhone replacement parts, please feel free to contact us via service@rewa.tech or visit the website at shop.rewa.tech . And you can also check our repair guides：

You can check the logistics status by the tracking number we informed you in the email or in your account on the above website of express company to see where the parcel is, or you can contact us.

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.

Alibaba.com offers 34,121 phone screen repair products. such as machinery repair shops, retail, and home use. You can also choose from apple iphone, samsung, and oppo. As well as from 1 year, 18 months, and 2 years. And whether phone screen repair is provided.

New arrival -175 Degree LCD Freezing Separator Machine LCD Separator Freezer For Samsung LCD Screen Repair Features : 1. Specially suitable for Iphone Samsung edge curved LCD separating. 8.Sliding wheel on machine bottom 9.Refrigerator technology, guarantee constant temperature and rapid cooling. 10.Over heat protection, short circut protection ,over current protection, high and low voltage protection, reverse phase lack protection etc.

Responsible for performing installations and repairs (motors, starters, fuses, electrical power to machine etc.) for industrial equipment and machines in order to support the achievement of Nelson-Miller’s business goals and objectives:

• Perform highly diversified duties to install and maintain electrical apparatus on production machines and any other facility equipment (Screen Print, Punch Press, Steel Rule Die, Automated Machines, Turret, Laser Cutting Machines, etc.).

• Provide electrical emergency/unscheduled diagnostics, repairs of production equipment during production and performs scheduled electrical maintenance repairs of production equipment during machine service.

One of today’s modern technological wonders is the flat-panel liquid crystal display (LCD) screen, which is the key component we find inside televisions, computer monitors, smartphones, and an ever-proliferating range of gadgets that display information electronically.What most people don’t realize is how complex and sophisticated the manufacturing process is. The entire world’s supply is made within two time zones in East Asia. Unless, of course, the factory proposed by Foxconn for Wisconsin actually gets built.

Last week I had the opportunity to tour BOE Technology Group’s Gen 10.5 factory in Hefei, the capital of China’s Anhui Province.This was the third factory, or “fab” that Beijing-based BOE built in Hefei alone, and in terms of capability, it is now the most advanced in the world.BOE has a total of 12 fabs in Beijing, Chongqing, and several other major cities across China; this particular factory was named Fab 9.

Liquid crystal display (LCD) screens are manufactured by assembling a sandwich of two thin sheets of glass.On one of the sheets are transistor “cells” formed by first depositing a layer of indium tin oxide (ITO), an unusual metal alloy that you can actually see through.That’s how you can get electrical signals to the middle of a screen.Then you deposit a layer of silicon, followed by a process that builds millions of precisely shaped transistor parts.This patterning step is repeated to build up tiny little cells, one for each dot (known as a pixel) on the screen.Each step has to be precisely aligned to the previous one within a few microns.Remember, the average human hair is 40 microns in diameter.

On the other sheet of glass, you make an array of millions of red, green, and blue dots in a black matrix, called a color filter array (CFA).This is how you produce the colors when you shine light through it.Then you drop tiny amounts of liquid crystal material into the cells on the first sheet and glue the two sheets together.You have to align the two sheets so the colored dots sit right on top of the cells, and you can’t be off by more than a few microns in each direction anywhere on the sheet.The sandwich is next covered with special sheets of polarizing film, and the sheets are cut into individual “panels” – a term that is used to describe the subassembly that actually goes into a TV.

For the sake of efficiency, you would like to make as many panels on a sheet as possible, within the practical limitations of how big a sheet you can handle at a time.The first modern LCD Fabs built in the early 1990s made sheets the size of a single notebook computer screen, and the size grew over time. A Gen 5 sheet, from around 2003, is 1100 x 1300 mm, while a Gen 10.5 sheet is 2940 x 3370 mm (9.6 x 11 ft).The sheets of glass are only 0.5 - 0.7 mm thick or sometimes even thinner, so as you can imagine they are extremely fragile and can really only be handled by robots.The Hefei Gen 10.5 fab is designed to produce the panels for either eight 65 inch or six 75 inch TVs on a single mother glass.If you wanted to make 110 inch TVs, you could make two of them at a time.

The fab is enormous, 1.3 km from one end to the other, divided into three large buildings connected by bridges.LCD fabs are multi-story affairs.The main equipment floor is sandwiched between a ground floor that is filled with chemical pipelines, power distribution, and air handling equipment, and a third floor that also has a lot of air handling and other mechanical equipment.The main equipment floor has to provide a very stable environment with no vibrations, so an LCD fab typically uses far more structural steel in its construction than a typical skyscraper.I visited a Gen 5 fab in Taiwan in 2003, and the plant manager there told me they used three times as much structural steel as Taipei 101, which was the world’s tallest building from 2004- 2010.Since the equipment floor is usually one or two stories up, there are large loading docks on the outside of the building.When they bring the manufacturing equipment in, they load it onto a platform and hoist it with a crane on the outside of the building.That’s one way to recognize an LCD fab from the outside – loading docks on high floors that just open to the outdoors.

LCD fabs have to maintain strict standards of cleanliness inside.Any dust particles in the air could cause defects in the finished displays – tiny dark spots or uneven intensities on your screen.That means the air is passed through elaborate filtration systems and pushed downwards from the ceiling constantly.Workers have to wear special clean room protective clothing and scrub before entering to minimize dust particles or other contamination.People are the largest source of particles, from shedding dead skin cells, dust from cosmetic powders, or smoke particles exhaled from the lungs of workers who smoke.Clean rooms are rated by the number of particles per cubic meter of air.A class 100 cleanroom has less than 100 particles less than 0.3 microns in diameter per cubic meter of air, Class 10 has less than 10 particles, and so on. Fab 9 has hundeds of thousands of square meters of Class 100 cleanroom, and many critical areas like photolithography are Class 10.In comparison, the air in Harvard Square in Cambridge, MA is roughly Class 8,000,000, and probably gets substantially worse when an MBTA bus passes through.

Since most display manufacturing has to be done in a cleanroom and handling the glass requires such precision, the factory is heavily automated.As you watch the glass come in, it is placed into giant cassettes by robot handlers, and the cassettes are moved around throughout the factory.At each step, robots lift a piece of glass out of the cassette, and position it for the processing machines.Some of the machines, like the ones that deposit silicon or ITO, orient the glass vertically, and put them inside an enormous vacuum chamber where all the air is first pumped out before they can go to work.And then they somehow manage to deposit micrometer thin layers that are extremely uniform.It is a miracle that any of this stuff actually works.

It obviously costs a lot to equip and run such a fab.Including all of the specialized production tools, press reports say BOE spent RMB 46 billion (US$6.95 billion). Even though you don’t see a lot of people on the floor, it takes thousands of engineers to keep the place running.

The Hefei Gen 10.5 is one of the most sophisticated manufacturing plants in the world.On opening day for the fab, BOE shipped panels to Sony, Samsung Electronics, LG Electronics, Vizio, and Haier.So if you have a new 65 or 75-inch TV, there is some chance the LCD panel came from here.