Understanding the touch screen technology: Resistive and Capacitive

Touch screen consists of a technology that allows the direct and intuitive interaction and command of a certain electronic device by touch. Today, touch screen technology is present in many aspects of modern life, whether in smartphones, tablets, ATMs, computers, televisions and so on. In fact, the majority of laptop products today include touch screen technology. There are many choices of laptops with touch screens available and clicking on gives you valuable considerations before the time to buy. Finding as much information as possible before buying is recommended especially when you want to buy an electronic product.

Performing all the commands directly

The user is able to perform all the commands of a certain device from the touch directly on the device screen, without the need to use keyboards, mice or other hardware and peripherals. The touch screen technology recognizes the presence and location of the touch made on the surface of an electronic display and, consequently, transmits this information in order to carry out the desired task.

Types of touch screen

There are different touch screen systems, but in the current market the most common are: resistive technology and capacitive technology. The second technology reacts slower than the first one. However, the capacitive technology was considered cheaper and more suitable to be applied to several types of devices, especially smartphones.

Resistive system

This model is formed from three layers, two conductors and one insulation. The two conductive films come together at the point where the user touches the screen, causing a current of electric power in the place. The device system is informed about the place where this join occurs, causing the ordered task to be decrypted and executed by the mechanism.

Capacitive system

This system is characterized by the accumulation of charges in one of the films. When the user touches the screen, the charges are transferred to your finger. The mechanism identifies the energy variations that are subtracted from the screen, determining the coordinates of the point at which it was touched. Determining coordinates is the core of the system. This is the beginning of an electronic reaction in the screen body.

Differences between the capacitive system and the resistive system


Capacitive technology only works when the touch is performed by something that conducts energy (such as the human finger, for example), since it must be transferred to the object that touches the screen. The resistive, because it works from the union of the two conductive films, works with the touch of any object, be it a finger or a rubber, for example. Capacitive technology is more popularly used in smartphones.

Another difference is the resistance of the capacitive system in relation to the resistive. However, the latter turns out to be much cheaper to produce compared to the other touch screen systems available in the market.

Hopefully by reading this article you can add to your knowledge about one of the developments in digital technology. Thank you for your attention.