What is a touchscreen on a phone or tablet?

More recently, few people could believe that phones with the usual buttons will give way to devices that are controlled by touching the screen. But times are changing and the demand for push-button phones is gradually falling, while for smartphones it is growing.

The term “touchscreen” was formed from two words – Touch and Screen, which is translated from English as “touch screen”. Yes, that’s right – the touchscreen is the touch screen that you touch when using your smartphone or tablet. In fact, touch screens are found not only in the world of mobile technology. So, you could see them when depositing funds to a mobile device account through a terminal, at an ATM, in ticket devices, etc..

It is important to pay attention to the fact that there are several different principles for the operation of touch screens, depending on where and for what they are used. Of course, the cost of technology varies. So, there is no point in using high-tech touch screens for mobile phone top-up terminals, which cannot be said about the same smartphones.

What is a touchscreen?

Modern smartphones use capacitive touch screens. They are a glass panel on which a layer of transparent resistive material is applied. In the corners are electrodes that supply a low-voltage alternating voltage to the conductive layer. The human body can conduct electric current through itself, and also has a certain capacity. Therefore, when you touch the screen, a leak occurs and the place of this leak is determined by the controller, which uses data from the electrodes at the corners of the panel.

In PDAs, which are almost never found on sale today, resistive screens are used, in addition to the glass panel there is a flexible membrane. The surface between them is filled with micro-insulators. When the screen is pressed, the membrane and panel are closed, after which the controller captures the change in resistance and converts it into touch coordinates.

Remember, a capacitive screen does not respond to pressing an object or even a simple stylus (you need a stylus with a special tip), while resistive screens react to absolutely any touch.

Can I replace the touchscreen?

If the user breaks the touchscreen or that one crashes for one reason or another (for example, stops responding to clicks), the touchscreen can be replaced. It is advisable to replace it in a specialized service with a guarantee.