With the continuous development of technology, touch screen display has become an indispensable part of our daily life. From smart phones, tablet PCs, smart homes to public inquiry systems, the application of touch screen display has penetrated into various fields. In this paper, we will discuss the technology, application and development trend of touch screen display in detail.

First, the touch screen display technology

Touch screen display technology is mainly divided into two types: resistive and capacitive.

• Resistive touch screen display

Resistive touch screen display is composed of two layers of film, when the finger or stylus is pressed on the screen, the contact point between the two layers of film will produce a coordinate. This coordinate can be used to locate the position of the user\’s finger or stylus. The advantages of this technology are low cost, durability, and freedom from electromagnetic interference, so it is widely used in low-grade cell phones and low-end tablet PCs.

• Capacitive Touch Screen Display

Capacitive touch screen display utilizes the coupling between the electric field of the human body and the electric field of the screen to detect the position of the finger or stylus. When the finger or stylus touches the screen, it changes the distribution of the screen\’s electric field, which is detected by the sensor. The advantages of this technology are responsive, support for multi-touch, and not affected by ambient temperature and humidity, so it is widely used in high-grade cell phones, tablet PCs and smart homes.

Second, the application of touch screen display

The application of touch screen display has been deeply into various fields, the following are some typical application scenarios:

• Smartphone

Smart phone is the largest application field of touch screen display, through the touch screen can be convenient to realize the operation of the phone, such as making phone calls, sending text messages, surfing the Internet, playing games and so on. At the same time, smartphones can also realize more functions by downloading different applications, such as map navigation, e-commerce, online payment and so on.

• Tablet PC

Tablet PC is also an important application field of touch screen display, through the touch screen can realize the basic operation of computer, such as opening applications, editing documents, playing videos, etc.. At the same time, tablets can also be connected to external devices such as keyboards and mice to achieve more efficient operation.

• Smart Home

Smart home is a rapidly developing field in recent years, through the touch screen display can realize the intelligent control of the family, such as adjusting the indoor temperature, switching the lights, controlling home appliances and so on. At the same time, smart home can also realize more intelligent functions by connecting with other devices, such as automated home security system, intelligent home health management, etc.

• Public Inquiry System

Public inquiry system is an important application of touch screen display in public places, such as airports, train stations, hospitals and so on. Through the touch screen display, users can conveniently obtain a variety of information, such as flight information, train schedules, hospital registration information and so on. At the same time, the public inquiry system can also be connected with the backstage system to realize more intelligent services, such as intelligent guide, intelligent navigation and so on.

Third, the development trend of touch screen display

With the continuous development of technology, touch screen display will continue to play an important role in the future. Here are some future trends:

• Large size and high resolution

As people watch movies, play games, conference presentations and other needs continue to increase, large size and high resolution touch screen display will become the future development trend. At the same time, this will also promote the renewal of TV, conference equipment and other areas.

• Multi-touch and gesture recognition

Multi-touch and gesture recognition technology will become an important feature of the future touch screen display, which will further enhance the user experience and interactivity. For example, in conference presentations, documents can be co-edited through multi-touch and more natural operations can be realized through gesture recognition.

• Bendable and foldable screens

Bendable and foldable screen is another development trend of future touch screen display, which will make the device more portable and diversified. For example, a cell phone can be folded into two forms: a tablet or a cell phone, thus meeting different usage needs.

• Transparency and wearable devices

Transparency and wearable devices is also an important development direction of the future touch screen display, which will make the device more thin and light and personalized. For example, a more modern appearance design can be achieved through transparent touch screen displays, and a more convenient way of life and work can be realized through wearable devices.

In short, with the continuous development of technology, touch screen display will play a more important role in various fields in the future. We should pay attention to its technological development, application innovation and future trends, in order to better adapt to the future needs of life and work.