Where is the touchscreen on the tablet. How the touch screen works in the phone - what it is and what is different from the display. Projection-capacitive touch screens

In contrast to stationary computers, controls in the tablets and programs are carried out by easy pressing of the finger on the screen at the desired point. The reaction of the touchpoint on touch is due to a thin transparent glass plate superimposed on the display screen. When pressing on the glass (touchscreen), depending on the type of sensors, the resistance, inductance or the capacity of the grid applied to the glass and thus the tablet obtains an indication to a certain action.

The sensory glass is very subtle, but strong enough to destroy it with his finger. But if the tablet drop on a solid coating or strike a sharp object, the touch screen cracks up, which happened to the MonsterPad children's tablet glass shown on the photograph.

Tablet performance check with a mouse

The image on the screen was uniform without defects and distortion. The tablet has kept performance, since when you press the power button, POWER pop up a window with a menu to turn off the tablet, but it became impossible to control it with the work of the finger to the screen.

To fully check the working capacity of the tablet, and the ability to turn it off before repair, it was necessary to connect to the Micro USB connector, located on the side of the tablet, mouse. Mouses usually have a connector for uSB connections. Therefore, I had to buy a USB-Micro-USB adapter.

When connecting the mouse, the tablet system automatically determined it, and the arrow cursor appeared on the screen. Diagnostics showed that the electronics of the tablet is in good condition. Consequently, it is enough to replace the touchscreen to repair the tablet. After diagnosing the tablet was turned off using the mouse.

In anticipation of the acquisition of the touchscreen, you need to maintain a tablet battery in a charged state, since a deep discharge of it dramatically reduces the time autonomous work Tablet.

Where you can buy touchscreen for tablet

Searching for shopping Touchscreen for the Monsterpad Children's Tablet at the minimum cost led to the site tested by time I personally chinese Internet Aliexpress shop. The site contains a large range of Touchscreen sellers for Monsterpad tablet.

A seller was selected with large quantity Positive feedback and high rating with medium price and free shipping. When choosing a touchscreen, pay attention to the presence of bilateral scotch on it. If the screen without tape, then the replacement will complicate it with the need to purchase such a sticky tape, cutting it and fix.

If the Touchscreen did not work on the name of the tablet, then you can try to search for its marking, which is usually applied to a flat loop that goes from the touchscreen.

Sensory glasses of many models of tablets are interchangeable. The main thing when choosing to pay attention to the type of sensor and its size diagonally, expressed in inches. For example, for the MonsterPad tablet, you need a touch screen size 7 ".

The resulting parcel was greater, in comparison with the size of the touchscreen, the foam box is fully wrapped in a sticky film. Open such packaging conveniently, cutting the knife along the box of the box of the box.

The touchscreen was removed from the packaging and is carefully examined for defects. Everything was in perfect condition. Fitting glass on the tablet confirmed the coincidence of sizes. To test the performance, it remains only to disassemble the tablet and connect the touchscreen to motherboard.

How to disassemble a children's tablet Monsterpad

Before repairing the tablet, to exclude applying to its body and the scratching and dust, the dust between the display and the touch glass you need to wipe the table with a damp cloth and cover its surface with a soft cloth without a pile. From the instrument you will need only a knife and a couple of small screwdrivers with a crusade and flat sting. After preparing the workplace, you can start repair.

A children's tablet MonsterPad disassembled, thanks to the screw fastening of the back cover simply. A sufficiently sharp object to remove four legs-plugs, glued with a sticky mass and unscrew the four screws with a screwdriver with a screwdriver.

Next, even without the help of a plastic card, capturing nails to half the housing in the installation area of \u200b\u200bthe Tablet and connectors button, carefully dilute its halves to the sides. Buttons on and adjust the volume of the sound should be immediately removed and put down to the side so as not to be lost and could not scratch the screen of the tablet, in case of entering it.

The tablet is disassembled sufficiently to proceed to replacing the touch glass. It remains only to remove the loop from the touchscreen from the connector. In the photo the connector is located in the right corner.

If the tablet disassembled to replace the battery, then its type is visible in the photo. To replace the battery, you first need to disappear from the motherboard red and black wires, reaching it and carefully remove it, overcoming the grip of the double-sided adhesive clutch.

To release the touchscreen loop, you must move the screwdriver with a screwdriver fixators for a couple of millimeters to the side, indicated in the photo with the red arrows. After that, the loop without an effort can be removed from the connector.

How to check the touchscreen before installing the tablet

After removing the back cover from the tablet, it was possible to check the new touchscreen for performance. To do this, without removing the protective film, impose a new touch screen on a broken, gently turn the tablet, and observing the numbering of the loop, insert ego into the connector on the motherboard and return the locks in place. Then turn the tablet with the display up and turn it on with the power button.

After download software You need to tap on any icon or just work a little on the tablet. If the reaction on the display when touched and scrolling the pages is, it means everything is in order and you can proceed to replace the broken glass. Before starting repair, you need to turn off the tablet with the power button and disconnect the plume of the new touchscreen from the connector.

How to remove cracked touchscreen

To remove the cracked touchscreen, it is necessary to pose it with the end of the knife for any of the corners and try to lift.

In the Monsterpad tablet, the glass was glued slightly, it was not even warm up the place of gluing with a hairdryer. The efforts of the fingers were enough for its deny. The main thing is not to hurry and perform this operation very slowly and smoothly.

Preparation of tablet frame and touchscreen installation

After removing the cracked touchscreen, it is necessary to degrease and remove the remnants of the glue from the frame with the help of a rubbish.

Fortunately, the cracked glass did not crumble on the pieces and it was not necessary with the help of a vacuum cleaner or a hair dryer to blow his small fragments. For the same reason, it is not recommended to scrape the remnants of glue tool.

In order for the train to prevent the positioning of the touchscreen when gluing, a segment of a polychlorvinyl tube was inserted next to the opening of its release, as in the photo.

In the next step with the touchscreen from the applied sticky layer on the edge, a protective film was removed.

It remains to fill the loop into the hole of the tablet frame, overfeed the angle of the touchscreen at the loop into the excavation of the frame and slowly attach it to the frame controlling the accuracy of laying on the opposite corner diagonally.

Tachkrin lay down in the deepening of the frame for sure, without gaps and displacement from the first attempt. In a dense press of glass at this stage of repair, there is no need. It is advisable to do after complete assembly and checking the work of the tablet.

The plume is long enough, which is convenient when installing. However, so that the train does not break in the case of it from entering it between the covers when they are closed, it must be folded twice and slightly press, avoiding sharp bends.

It remains to set the pushers of the buttons on the tablet, adjust the sound volume and snap rear cover to the base of the tablet. Cancel Four Screws and set the discharges on them.

DIY repair of the tablet is safely completed, he began to work and look like a new one, and the child can play favorite games again. Now, I suppose he will be more careful about the tablet and other gadgets. I did not shoot a protective external film from the touch screen, let it remove it the owner of the tablet and the first tapnet (touches) to the surface of the screen.

I hope given step-by-step instruction It will help to cope with the repair of the tablet, the smartphone to any home master, even not having the experience of repairing such devices.

Costs When replacing the tablet touch glass with their own hands amounted to less than 10% of the initial cost of the tablet.

Ten years ago cell phones Have a push-button control.

The exception was pocket personal computersthat manufacturers provided a touch screen with a stylus. Presentation first Apple. The iPhone caused the creation of sensory smartphones. Such devices quickly gained popularity among buyers thanks to simple management and attractive body design. Also manufacturers got the ability to install wide screens - a place previously intended for physical keys was released on the front housing.

Despite the variety of phones, touch screens are available in two design versions. Buyers are available resistive and capacitive technology, and the first option is gradually leaving the market due to competition with new technology. We will look at two varieties of sensory displays and highlight their main features.

Resistive touchscreen

Resistive touchscreen - budget sensor screens. Usually they are equipped in low-cost chinese phones. The item consists of several transparent components, between which a conductive grid is located. After touching the chain closes, and the special electronic controller calculates the coordinates of the perfect pressing. Due to the design features, the resistive screen is able to process only the only pressing.

The advantage of resistive touchscreen is considered the possibility of using for pressing any items. Previously, manufacturers even have equipped phones with styluses for convenient selection of elements on the screen.

The disadvantage of resistive screens is the increased susceptibility to damage. The element cannot be made of solid material, so such touchscreen is constantly covered with scratches, chips and cracks. The situation was saved only the sticking of the protective film on the sensor surface.

Capacitive Touchscreen

Capacitive touch screens have a fundamentally different technology of creating. Manufacturers create a glass panel with a conductive surface. In the corners there are four sensors registering the leakage of the current-flowing current. As a result, the controller processes the location of leaks and transmits the coordinate processor.

Thanks to this technology, capacitive touchscreen support multiple clicks. Also, the owners of smartphones are able to use gestures to increase the image or scroll of information.

The main advantage of capacitive sensors is considered high sensitivity - to keep pressing, sufficiently light touch. It was impossible in resistive screens, where users had to literally pressed on the surface of the panel. Additionally, the dignity is high strength. Modern manufacturers produce touchscreen from tempered glasswithstanding mechanical impacts. Smartphone screens are well withdrawn with sharp objects and even minor blows.

Conclusion

Touchscreen in the phone and smartphone - a convenient tool for interaction with operating system And all the functions of the device. Thanks to this technology, there was no need for large quantities physical buttons. It saves a place and allows you to increase the display size due to the lack of keys. Sensory control technology is rapidly developing - now many modern phones support 10 simultaneous presses.

More recently, few people could believe that phones with the usual buttons will refuse the place of devices that are controlled by touching the screen. But times are changing and demand for push-button phones Gradually falls, and on smartphones - grows.

The term "touchscreen" was formed from two words - Touch and Screen, that translated from the English language as a "touch screen". Yes, it is so - the touchscreen and there is a touch screen to which you touch when you use your smartphone or tablet. In fact, touch screens are found not only in the world of mobile technology. So, you could see them when making funds to the mobile device account through the terminal, in an ATM, in ticketing devices, etc.

With its appearance, Touch-Screen is obliged to Western scientists. The very first samples were born in the second half of the 60s of the last century. Based on this, we can conclude that Tachskrin has been used for over 40 years. Before the advent of smartphones, they were used in ATMs, etc. At the moment, every person who enjoys cellular connection, car navigators, visits banks and shops, faces this technology, sometimes even without guessing how it is called. So, we sorted out what is touchscreen in phones. In fact, it is the same as the display reacting to the touch of fingers. It is perfectly used instead of the keyboard and is actively used in mobile technologies. The advantages of touchscreen can be attributed to dust, moisture and other adverse factors. ambient, as well as a high degree of reliability. If our touch device does not always respond to touch, or even refuses to do it, for example, it does not want to change the brightness on the iPad, most likely, the Touch-Screen came out. It costs relatively inexpensive (especially if we are interested in a resistive display), and replace it easily.

Basis of touchscreen

The basis of any touchscreen is a matrix on liquid crystals, which is actually a reduced copy of the one that is in the monitor. The backlight diodes are located on the reverse side, and on the facial - a number of layers that fix pressing (resistive screen) or touch (capacitive screen).

A person who works well in what is touchscreen understands that most of the devices produced uses a resistive touch screen. It follows from their cheapness and relative ease of design. Many Chinese smartphones who flooded the market have a resistive type of screen, the manufacturing technology of which, by the way, appeared earlier than the capacitive.

Types of touch screens

Touch screens They are divided into resistive, matrix, projection-capacitive, sensory screens on surface-acoustic waves, infrared, optical, strain gauge, sensory screens DST and induction.

Resistive touch screens

Divided into four-wire and five-wire.

The sensor of the resistive screen consists of two transparent plastic plates with a thin conductive grid that are located on the surface of a conventional liquid crystal screen. Between the plates - a transparent dielectric layer. The program displays a graphical interactive interface, which, thanks to transparent materials on the matrix, is clearly visible. Responding to a program request, the user presses the desired interface point (for example, a button image). - The plastic dielectric dispels, plastic plates are in contact, feeding the current from the electrode one to the grid another. The current appearance is fixed by the registering controller, which in accordance with the coordinate grid will determine the point of pressing. The coordinates of the point enroll in the program and are processed by the laid algorithms.

Four-wire screen

The resistive touch screen consists of a glass panel and a flexible plastic membrane. And on the panel, and the membrane causes a resistive coating. The space between the glass and the membrane is filled with micro-insulators, which are evenly distributed over the active area of \u200b\u200bthe screen and carry out the conducting surfaces. When the screen is pressed, the panel and membrane are closed, and the controller with an analog-digital converter registers the resistance change and converts it to the coordinates of touch (x and y). In general terms, the read algorithm is as follows:

The voltage is fed to the upper electrode + 5V, the lower ground is grounded. The left is connected to the right, and the voltage is checked on them. This voltage corresponds to the Y-coordinate of the screen.

Similarly, the left and right electrode is supplied + 5V and "Earth", from the top and bottom of the X coordinate.

There are also eight-wire sensory screens. They improve tracking accuracy, but do not increase reliability.

Five-wire screen

The five-wire screen is more reliable due to the fact that the resistive coating on the membrane is replaced by a conductive (5-wire screen continues to work even with a cutting membrane). On the rear glass A resistive coating with four electrodes in the corners is applied.

Initially, all four electrodes are grounded, and the membrane is "tightened by a resistor to + 5V. The voltage level on the membrane is constantly monitored by an analog-to-digital converter. When nothing concerns the touch screen, the voltage is 5 V.

As soon as the screen is pressed, the microprocessor catches the change in the stress of the membrane and begins to calculate the coordinates of the touch as follows:

On the two right electrodes the voltage + 5V, the left is grounded. The voltage on the screen corresponds to the X coordinate.

The y-coordinate is read by connecting to + 5 in both the upper electrodes and to the "land" of both the lower.

Resistive touch screens of cheers and racks for pollution. Resistive screens react to a touch by any smooth solid object: hand (bare or glove), pen, credit card, mediator. They are used everywhere where vandalism and low temperatures are not excluded: to automate industrial processes, in medicine, in service sector (POS-terminals), in personal electronics (PDA). The best samples provide accuracy in 4096 × 4096 pixels.

The disadvantages of resistive screens are low light (no more than 85% for 5-wire models and even lower for 4-wire), low durability (no more than 35 million pages per point) and insufficient vandalustability (the film is easily cut).

Matrix touch screens

The design is similar to resistive, but simplified to the limit. Horizontal conductors are applied on the glass, the membrane is vertical.

When touched to the screen, the conductors come into contact. The controller determines which conductions are closed, and transfers the corresponding coordinates to the microprocessor.

Have very low accuracy. Interface elements have to be specifically located taking into account the cells of the matrix screen. The only dignity is simplicity, cheapness and unpretentiousness. Usually, the matrix screens are interviewed by lines (similar to the matrix of buttons); This allows you to establish multitouch. Gradually replaced with resistive.

Capacitive touch screens

The capacitive (or superficially capacitive) screen uses the fact that the object of a large container conducts an alternating current.

The capacitive touch screen is a glass panel covered with a transparent resistive material (the alloy of indium oxide and tin oxide is usually applied). The electrodes located in the corners of the screen are fed to the conductive layer a small variable voltage (the same for all angles). When touching the screen with a finger or other conductive, current leakage appears. At the same time, the closer finger to the electrode, the smaller the resistance of the screen, which means that the current is larger. The current in all four angles is recorded by sensors and is transmitted to the controller, calculating the coordinates of the touch point.

In earlier models of capacitive screens applied d.C. - It simplified the design, but with a bad user contact with the earth led to failures.

Capacitive sensory screens are reliable, about 200 million presses (about 6 and a half years of pressing with an interval of one second), they do not let the liquids and perfectly suffer the conductive contaminants. Transparency at 90%. However, the conductive coating, located directly on the outer surface, is still vulnerable. Therefore, the capacitive screens are widely used in machine guns, only installed in indoor weather protected. Do not react to hand in glove.

It is worth noting that due to differences in terminology, superficial and projection-capacitive screens are often configured. According to the classification applied in this article, the screen, for example, the iPhone is a projection and capacitive, and not consuming.

Projection-capacitive touch screens

A grid of electrodes is applied on the inside of the screen. The electrode together with the body of a person forms a condenser; The electronics measures the capacity of this capacitor (the current pulse is supplied and the voltage is measured).

Samsung managed to establish sensitive electrodes directly between the Amoled Screen subpixels, it simplifies the design and increases transparency.

Transparency of such screens up to 90%, the temperature range is extremely wide. Very durable (bottleneck - complex electronics, processing press). The glass can be used with a thickness of up to 18 mm, which leads to extreme vandalustability. Non-conductive contaminants do not react, conductive are easily suppressed program methods. Therefore, projection-capacitive sensory screens are widely used in personal electronics, and in automata, including those installed on the street. Many varieties support multitouch.

Sensory screens on surface-acoustic waves

The screen is a glass panel with piezoelectric converters (PEP) in the corners. At the edges of the panel are reflective and taking sensors. The principle of operation of such a screen is as follows. Special controller forms high-frequency electric signal And sends it to PEP. The PEP converts this signal into the surfactant, and reflective sensors reflect it accordingly.

These reflected waves are accepted by appropriate sensors and are sent to PEP. The PAP, in turn, take reflected waves and transform them into an electrical signal, which is then analyzed using the controller. When the screen is touched with a finger, a part of the energy of acoustic waves is absorbed. Receivers fix this change, and the microcontroller calculates the position of the touch point. Reacts to the touch of the subject capable of absorbing the wave (finger, hand in glove, porous rubber).

The main advantage of the screen on surface acoustic waves (surfactant) is the ability to track not only the coordinates of the point, but also the press force (here, rather, the ability to accurately determine the radius or the area of \u200b\u200bpressing), due to the fact that the degree of absorption of acoustic waves depends on the pressure value at the point Touch (the screen does not bend under the touch of the finger and is not deformed, so the pressing force does not entail qualitative changes to the processing of the data controller on the coordinates of the effect, which fixes only the area overlapping the path of acoustic pulses).

This device has very high transparency, since the light from the mapping device passes through a glass that does not contain resistive or conductive coatings. In some cases, it is not used to combat glare glass at all, and emitters, receivers and reflectors are attached directly to the display screen. Despite the complexity of the design, these screens are quite durable. According to the application, for example, the American company Tyco Electronics and the Taiwan company GeneralTouch, they withstand up to 50 million clues at one point, which exceeds the 5-wire resistive screen.

The screens on the surfactant are used mainly in slot machines, in protected reference systems and educational institutions. As a rule, the screens of surfactants differ in conventional - 3 mm thick, and vandal-resistant - 6 mm. The latter withstand the punch with a fist of the middle man or the drop in the metal ball weighing 0.5 kg from a height of 1.3 meters (according to ELO Touch Systems). The market provides options for connecting to a computer both through the RS232 interface and via the USB interface. At the moment, controllers are greater popularity to the SAL touch screens, supporting both and the other connection type - Combo (ELO TOUCH SYSTEMS).

The main disadvantage of the screen on the surfactant is the failures in the presence of vibration or when exposed to acoustic noise, as well as when the screen is contaminated. Any foreign object placed on the screen (for example, chewing gum) fully blocks its work. In addition, this technology requires a touch subject that necessarily absorbs acoustic waves, that is, for example, a plastic bank card in this case is not applicable.

The accuracy of these screens is higher than matrix, but lower than traditional capacitive. For drawing and entering text, they are usually not used.

Infrared touch screens

The principle of operation of the infrared sensor panel is simple - the grid formed by horizontal and vertical infrared rays is interrupted by touching the monitor with any subject. The controller determines the place in which the beam was interrupted.

Infrared sensory screens are afraid of pollution and therefore apply where the image quality is important, for example, in electronic books. Due to simplicity and maintainability, the scheme is popular with the military. Often, on such principle, the keyboards of the intercoms are made. This type The screen is applied in abundant phones of Neonode.

Optical touch screens

The glass panel is equipped with infrared illumination. On the border "Glass-air" it turns out a complete internal reflection, on the border "Glass - an extraneous subject" light dissipates. It remains to fall out the scattering picture, there are two technologies for this:

In the projection screens next to the projector raises the camera.

So arranged, for example, Microsoft Pixelsense.

Or photosensitive make an additional fourth subpixel LCD screen.

Allow you to distinguish with hand pressing from some objects, there is multitouch. Large sensory surfaces are possible, up to the blackboard.

Tensometric touch screens

React to the strain deformation. The accuracy of tensometric screens is small, but they are perfectly withstanding vandalism. Basic use - ATMs, tickets, and other devices located on the street.

Touch Screens DST.

The DST touch screen (DisPersive Signal Technology) registers a piezoelectric effect in glass. It is possible to press the screen with hand or any subject.

A distinctive feature is a high reaction rate and the ability to work in conditions of strong screen pollution. However, the finger should move, a fixed finger system does not notice.

Articles and Lifehaki

Today it is difficult to meet a person who has never heard before Touch-Screen. However, many high-generation users do not know what is actually touchscreen in the phone.

Let's try to answer this question, because the entire new generation of computer and mobile technology is connected with the current term today.

What is it and how it works

Translated from the English language "TOUCH-SCREEN" means "touch screen", or "screen that concerns".

In other words - a touchscreen display, you can control with your fingers.

Today, the touchscreen is very common, because it completely replaces such external deviceslike a mouse and keyboard. This technology Used when creating smartphones and tablets.

Structurally it looks like this: we have a screen, and it is located above it touchpad. We see the button you need and click on its image, touching the display with your fingers.

With its appearance, Touch-Screen is obliged to Western scientists. The very first samples were born in the second half of the 60s of the last century.

Based on this, we can conclude that the touchscreen is used for over 40 years.

Before the advent of smartphones, they were used in ATMs, etc.

At the moment, every person who uses cellular communications, car navigators, visits banks and shops, faces this technology, sometimes not even guessing how it is called.

So, we figured out that this is the touchscreen in mobile devices. In fact, it is the same as the display reacting to the touch of fingers. It is perfectly used instead of keyboard and is actively used in mobile technologies.

Touchscreen can be attributed to the advantages:

• Protection against dust, moisture and other adverse environmental factors.
• High degree of reliability.

If our touch device does not always respond to touch, or even refuses to do this, most likely, the Touch-Screen came out of the system.

It costs relatively inexpensive (especially if we are interested in a resistive display), and replace it easily.

Where else is the touchscreen, except phones

Installation of equipment with Touch-Screen technology in stores, banks, supermarkets and other commercial and commercial institutions are able to significantly increase sales and service.

This has a positive effect on the competitiveness of enterprises and optimize their work.

In recent years, it is usually subconsciously associated with buyers with the success of a particular organization.

If we use POS terminals, we are very convenient to choose the product that interests us, to count its cost, etc.

Also there are often self-service terminals with an interactive menu - for example, when paying for services or placing orders.

Today, in the world modern technologiesEach person has a telephone, a tablet or computer. Due to careless handling of this technique, it can fail. If you drop the tablet, shed water to it or simply contact it, then very soon you will need to change the screen. The tablet is a rather complicated procedure that requires certain skills and knowledge. If you decide to repair your device yourself, then you need to consider it very painstaking. Before starting the replacement, you need to get acquainted with some rules in order to prevent other breakdowns.

Start

As a rule, the touchscreen replacement on the tablet may be needed due to the broken screen. If you encountered such a problem, you do not need to be upset, because this problem can be solved. The simplest option is to attribute the tablet in service centerwhere specialists will eliminate all defects in a rather short period of time.

And what if you can't for any reason go to workshop to professionals? In this case, you can try to change the screen and touchscreen yourself. Of course, this is a rather painstaking job. But if you can repaired your device yourself, it will save.

What do we need? To replace the screen, you must take the following tools:

Screen selection and touchscreen

So, the next step will be the selection of the screen and the touchscreen. It is necessary to approach this seriously, as on all tablets different screens. To do right choiceYou need to consult with the seller. It does not matter where you will buy. In a regular specialized store, you can approach the seller and ask all your questions. In the online store, you can also call consultants and find out what glass will be suitable for you.

In order for the seller to pick up a high-quality screen and touchscreen, it is necessary to view the full name selected items need to be checked for damage.

Screen analysis

Replacing the touchscreen on the tablet is carried out after removing the cracked screen. How to disassemble? So that everything goes well, it is necessary to be guided by the rules and, if possible, follow them. Let's look at the repair on the example of such a device as tablet ASUS.. The replacement of the touchscreen in this case is carried out according to the following algorithm:

1. If you have a tablet cover holds on the bolts, then you need to unscrew them. As a rule, they are on the edges of the device.
2. Further, we need to remove the lid. To do this, take a plastic card and use the lid. After that, spend it around the perimeter of the device.
3. On some tablets, the lid connects with the casing with a loop that needs to be carefully disconnected. How to do it? From the side of the loop there is a special latch, which you want to click. After that, you can disconnect it carefully.

Full disassembly of devissa

1. Replacing the touchscreen on the tablet with your own hands is made quite difficult. You need to start with the removal of the damaged screen. To do this, take a hair dryer and warm them the device body.
2. At the second stage, a stationery knife must be carefully pushing the screen and spend around the perimeter. If you do everything correctly, you can easily get the screen.
3. When you remove the screen, you need to get rid of Scotch residues. For this you can use a knife or tweezers.
4. If the screen was badly damaged, then you need to remove the lens with a cloth or napkin.
5. So, we removed the damaged item. What to do next? Before installing the screen, you need to remove all protective films and various stickers.
6. The new touchscreen must be put on its device where there was a damaged screen. Carefully press it and spend your fingers around the perimeter so that it is evenly entering the housing.

That's all. It remains only to assemble the lid and fix the loop. After such manipulations, it is recommended to paste protective filmTo protect the touchscreen from damage. As a rule, this film is enough for the year of use. If you spent a high-quality screen replacement, you can turn on the gadget and use it in the same mode. Replacing the touchscreen on Samsung and other popular devices are made on this principle.

Prices

If the replacement of the touchscreen on the tablet is performed independently, then you need to spend money only on new screen. Glass prices are now fluctuating from 500 rubles to 1500 rubles. It depends on the model and year of release.

Now there are new devices in which when damaged the touchscreen will have to change the screen together with the matrix. Of course, the price of such glass will start from 1000 rubles.

How to protect the tablet from damage

• Do not drop the device.
• Make sure that the tablet does not remain on the chair or sofa, since it can be accidentally sitting.
• Buy a protective film and get it out.
• Purchase a case.
• Watch out for the conditions in which the device is located, since the screen does not tolerate the temperature drop.

If you follow all manuals, you can extend the life of your tablet. Remember that the life of the device depends only on you.