Application of Touch Screen _ Classification of Touch Screen
Nowadays, everyone enjoys the convenience brought by smart large screen smartphones to their lives, as they can easily get what we want with just a few clicks and touches. I don’t know when it started, but as a new type of human-computer interaction machine, touch screens have become the simplest and most convenient machine to replace other devices.

Application of touch screen

In the field of mobile technology, touch screen technology is ubiquitous. Mobile phones no longer require keyboards that take up space, but instead have larger screens, richer and more convenient entertainment and office functions. Clicking on the screen allows for multi application and multi window operations. The era of touch screens has brought more possibilities for people to realize their creativity, and more novel, colorful, and fun application software has been developed, which was not possible with previous devices. This new type of human-computer interaction mode brings a better customer experience.

In addition, in the fields of public information inquiry such as libraries and science museums, the emergence of touch screens has replaced the original keyboard and mouse, reducing the requirements for users and allowing those who do not understand computers to use them easily. The large screen also brings more impactful visual stimulation to users, making information such as graphics and text more vivid.

Classification of touch screens

Infrared technology touch screen. This type of touch screen is very suitable for harsh working environments, with a low price. It mainly relies on the infrared emitter and receiver of the touch screen for operation, and is not affected by voltage, current, static electricity, etc. It has high accuracy, good light transmittance, and easy installation. It is generally used in large equipment such as TV screens, but its service life is average.

Surface acoustic wave touch screen. Surface acoustic wave touch screens rely on several parts such as sound wave generators, reflectors, sound wave receivers, and touch screens to complete their work. This type of touch screen has a long service life, but is afraid of water and oil pollution. If it is contaminated, it needs to be actively cleaned and maintained. Because it uses the working principle of sound waves, it will not be affected by temperature, humidity, etc. The surface is scratch resistant, has good transparency, high resolution, and is widely used.

Resistive touch screen. It uses the principle of a voltage divider to determine the X and Y coordinates of the contact point. When the touch screen is under pressure, the top and bottom layers will touch each other due to compression, covered with a layer of scratch resistant plastic. This type of touch screen, due to its complete isolation from the outside world, can adapt to various harsh environments and has good stability. However, because it is a multi-layer device, there may be a loss in brightness.

Capacitive touch screen. Capacitive touch screens are composed of transparent conductive layers, sensors, protective glass, etc., and are often used in portable devices such as mobile phones.

At present, capacitive touch screens are widely used in smart large screen smartphones, which are not prone to wear and tear, have high stability, long service life, and are convenient and easy to use.