What is a Touch Screen?

Touch panel (also known as "touch panel", "touch panel") is an inductive liquid crystal display device that can receive input signals such as contacts. The haptic feedback system can drive various connection devices according to a pre-programmed program, which can be used to replace the mechanical button panel, and use the liquid crystal display screen to create moving audio and video effects. ^[1]

With the development of computer technology, computer input methods have gone through four stages from the original paper tape input to keyboard input, mouse input, and touch input. This process is a process from professional to popular. Touchscreen technology allows more people to use the computer. touch

Touch screen technology is the most common computer input method accepted by ordinary people after keyboard, mouse, tablet, and voice input. With this technology, users can easily operate the host computer by simply touching the icon or text on the computer display screen with their fingers, thereby making the human-computer interaction more straightforward. This technology is extremely convenient for users and is a very attractive new multimedia interactive device. ^[3]

According to the type of sensor, touch screens are roughly divided into four types: infrared, resistive, surface acoustic wave, and capacitive touch screens. ^[3]

From the perspective of technical principles, the touch screen is a transparent absolute coordinate positioning system. First of all, it must be transparent, so it must solve the problem of transparency through material technology, such as

The touch screen has the advantages of convenience and intuitiveness, clear images, ruggedness, and space-saving. Users can touch the icon or text on the computer display screen with their hands to realize the operation and query of the host computer, eliminating the keyboard and mouse operations. This greatly improves the operability and security of the computer, and makes human-computer interaction more direct. ^[2]

With the increase of multimedia information query equipment,

Touch screens are mostly placed in public places for use. Due to environmental and human operations, some problems often occur during use, as follows. ^[5]

Due to technical limitations and poor environmental adaptability, especially the surface acoustic wave screen, the screen will not be normal due to water droplets, dust and other pollution.

touch screen

Use, so the touch screen also needs regular maintenance like ordinary machines. And because the touch screen is a highly integrated touch all-in-one for a variety of electrical equipment, the following issues should be noted when using and maintaining. ^[5]

(1) Before starting the machine, wipe the screen with a dry cloth every day. ^[5]

(2) Dropping water or drink on the screen will stop the software from responding. This is because the water drops and fingers have similar characteristics and need to be wiped off. ^[5]

(3) The touch screen controller can automatically determine the dust, but too much dust will reduce the sensitivity of the touch screen, just wipe the screen clean with a dry cloth. ^[5]

(4) Apply glass cleaner to clean the dirty fingerprints and oil on the touch screen. ^[5]

(5) Turn on and off the power strictly according to the regulations, that is, the order of turning on the power is: display, audio, host. Turn off the power in the reverse order. ^[5]

(6) A large number of temporary files are generated on the hard disk. If you frequently breakpoints or shut down without exiting Windows, you will soon cause hard disk errors. Therefore, you need to run ScanDisk regularly to scan for hard disk errors. It is best to set up a secret way to quit the application and shut down the power in the application. For example, click the corners in the prescribed order. ^[5]

(7) A pure touch screen program does not require a mouse cursor, and the cursor will only make the user's attention unfocused. ^[5]

(8) You should choose the simplest anti-mouse mode that is sufficient for your application, because complex modes require sacrificing latency and system resources. ^[5]

(9) Depending on the harsh environment, regularly open the head to clean the reflection stripes and inner surface of the touch screen. The specific method is: Open the cover on both sides of the machine, you can find the mechanism that releases the locking tongue at the front of the machine head, and you can release the locking tongue by opening the mechanism. Lift the front of the machine head, you can see the touch screen control card, unplug the touch screen cable, and move the machine head backward to remove the machine head and touch screen. After carefully looking at the method of fixing the touch screen, remove the touch screen for cleaning, taking care not to use hard paper or a hard cloth, and not to scratch the reflection stripes. Finally, the head is restored in the reverse order and the original structure. ^[5]