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. Usersonly need to lightly touch the icons or text on the computer screen with their fingers to operate the host, making human-computer interaction morestraightforward. This technology greatly faclitates users who do not understand computer operations. The application range of touch screens isvery wide, mainly including the following aspects.

industial contro. Touch screens are widely used in automated production ines, CNc machine tools, robots, and other eouioent. imoroyingproduction eficiency and operational convenience. in the field of industrial control, touch screens can ｒｅｐｌａｃｅ tradltional butons and keyboardsachievind more intuitive and efficient operations.

Healthcare: Touch screen technology enables doctors and nurses to quicky view patients" medical records and examination results through touchscrens, irmproving diagnosis and treatment eficiency.ln addition, touch screens can also be used for controling and operating medical equipmentsuch as ultrasound devices, hemodialysis machines, etc.Education and entertainment, Touchscreen technology has been applied to electronic whiteboards, interactive games, irtual really and otherscenanos, enancing the nteractvly and fun of leaming and entertaiment,lin the field of education, touch screens can be used for multimediateaching, 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 wellas information guery svstemns on urban streets, These svstems proyide convenient information aueryservices through touch screens, improving the efficiency and convenience of public services.Retall and Service lndustny, Touch screen technology is als0 applied in the retall and service industies, such as sel-service vending machines,automated ticketing systems, restaurant ordering systems, etc. These systems provide intuitive operating interfaces through touch screens, makingit convenient for users to shop, purchase tickets, and order meals.

Classification of touch screenS

Touchscreens can be, classified accordina to diferent standards, and common classification methods include the folowing

Classified bv working principle and medium of information transmissionResistive touch screen. detects touch position through pressure changes bebween two conductiye lavers, suitable for shylus inout and multi touchResistive touch screens have high precision and stability, but may be affected by scratches and wear.Capacitive touch screen: Utlizing the capacitive efect of the human body, the touch position is determined by detecting changes in the electricfeld. Capacitive touch screens have the advantages of high sensiiiy,fast response speed, and support for multi touch, and are widely used infields such as smartphones and tablets

Infrared touch screen. Determine the touch position by detecting the obstrucion of fingers or objects through an infrared matrix. infrared touchscreens are suitable for large-sized displavs, but mav be afected bv light interference and surface distortion.Surface acoustic wave touch screen: Using the propagation of sound waves on the glass surface, the touch posiion is determined by detecting theatenuation of sound waves, Surace acoustic wave touch screens have hioh transparency and durabiity, but mav be affected by water dropletsand dust.

Classified bw instalation 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.Bulit in touch screen: instal the touch detection device inside the housing of the display device, in front of the cathode ray tube. whenmanufacturing display devices, the touch detection device is made on the cathode rav tube, so that the disolav device directy has touch functionIntearated touch screen. when manufactuing displav devices.the touch detection device is integrated with the displav device to form an intearatedtouch 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 stageIn summary,touch screen technology has a wide range of aplications in various fields, and wth the continuous development of technology, itsapplication scope and performance are also constanty improving. At the same ime,there are various wavs to classiy touch screens, and userscan choose the appropriate type of touch screen according to their actual needs