The touch screen provides users with convenience and attracts new multimedia
January 14, 2017
Touch screen technology is the most common computer input method accepted by ordinary people after keyboard, mouse, writing pad and voice input. Using the technology, users can tap ICONS or text on the computer's display screen to operate the host, making human-computer interaction more intuitive. This technology greatly facilitates users and is an attractive new multimedia interactive device.
The essence of touch screen is a sensor, which consists of a touch detection component and a touch screen controller. The touch detection component is installed in front of the display screen, detect the user's touch position, and then send it to the touch screen controller; The main function of the touch screen controller is to receive touch information from the contact detection device, convert it into contact coordinates and send it to the CPU, and at the same time receive and execute commands from the CPU.
Transparent, which directly affects the visual effect of the touch screen. There is an issue of transparency. The infrared touch screen and the surface acoustic touch screen are separated only by a layer of pure glass. Transparency is arguably the best. Other touch screens must be carefully considered. "Transparency" is very important in the touchscreen industry. A general concept. Many touch screens are multilayer composite films. A little transparency is not enough to sum up its visual effects. It should include at least four features: transparency, color distortion, reflectivity, and clarity. For example, the degree of reflection includes specular and diffraction, but the diffraction reflection of the touch screen surface has not reached the degree of CD disc. For users, these four metrics are basically enough.
Due to the relationship between transmittance and wavelength curve, the image seen through the touch screen will inevitably have color distortion with the original image. Static images only have the feeling of color distortion, while dynamic multimedia images do not feel very good. Comfortable, color distortion, that is, the maximum color distortion of the image, naturally the smaller the better. The usual opacity is the average opacity of the map, of course, the higher the better.