Application of touch screen
As the latest computer input device, touch screen is currently the simplest, most convenient, and natural way of human-computer interaction. Users only need to lightly touch the icons or text on the computer screen with their fingers to operate the host, making human-computer interaction more straightforward. This technology greatly facilitates users who do not understand computer operations. The application range of touch screens is very wide, mainly including the following aspects:
Consumer electronics: Touch screen technology enables users to make phone calls, send text messages, browse web pages, take photos and videos through intuitive gesture operations. Smartphones and tablets are the most typical application areas of touch screen technology.
Industrial control: Touch screens are widely used in automated production lines, CNC machine tools, robots, and other equipment, improving production efficiency and operational convenience. In the field of industrial control, touch screens can replace traditional buttons and keyboards, achieving more intuitive and efficient operations.
Healthcare: Touch screen technology enables doctors and nurses to quickly view patients’ medical records and examination results through touch screens, improving diagnosis and treatment efficiency. In addition, touch screens can also be used for controlling and operating medical equipment, such as ultrasound devices, hemodialysis machines, etc.
Education and entertainment: Touchscreen technology has been applied to electronic whiteboards, interactive games, virtual reality and other scenarios, enhancing the interactivity and fun of learning and entertainment. In the field of education, touch screens can be used for multimedia teaching, remote education, etc., to improve teaching effectiveness and learning experience.
Public information query: Touch screen technology is widely used in business query systems of telecommunications bureaus, tax bureaus, banks, power and other departments, as well as information query systems on urban streets. These systems provide convenient information query services through touch screens, improving the efficiency and convenience of public services.
Retail and Service Industry: Touch screen technology is also applied in the retail and service industries, such as self-service vending machines, automated ticketing systems, restaurant ordering systems, etc. These systems provide intuitive operating interfaces through touch screens, making it convenient for users to shop, purchase tickets, and order meals.
Classification of touch screens
Touchscreens can be classified according to different standards, and common classification methods include the following:
Classified by working principle and medium of information transmission:
Resistive touch screen: detects touch position through pressure changes between two conductive layers, suitable for stylus input and multi touch. Resistive touch screens have high precision and stability, but may be affected by scratches and wear.
Capacitive touch screen: Utilizing the capacitive effect of the human body, the touch position is determined by detecting changes in the electric field. Capacitive touch screens have the advantages of high sensitivity, fast response speed, and support for multi touch, and are widely used in fields such as smartphones and tablets.
Infrared touch screen: Determine the touch position by detecting the obstruction of fingers or objects through an infrared matrix. Infrared touch screens are suitable for large-sized displays, but may be affected by light interference and surface distortion.
Surface acoustic wave touch screen: Using the propagation of sound waves on the glass surface, the touch position is determined by detecting the attenuation of sound waves. Surface acoustic wave touch screens have high transparency and durability, but may be affected by water droplets and dust.
Classified by installation method:
External touch screen: The touch detection device of the touch screen system is directly installed in front of the display device, which is easy to install and suitable for temporary use.
Built in touch screen: Install the touch detection device inside the housing of the display device, in front of the cathode ray tube. When manufacturing display devices, the touch detection device is made on the cathode ray tube, so that the display device directly has touch function.
Integrated touch screen: When manufacturing display devices, the touch detection device is integrated with the display device to form an integrated touch screen product.
Classified by technical principles (in addition to the four mentioned above, it also includes):
Vector pressure sensing technology touch screen: However, this technology has exited the historical stage.
In summary, touch screen technology has a wide range of applications in various fields, and with the continuous development of technology, its application scope and performance are also constantly improving. At the same time, there are various ways to classify touch screens, and users can choose the appropriate type of touch screen according to their actual needs.