Touch screen, also known as "touch screen" or "touch panel", is an inductive liquid crystal display device that can receive input signals such as contacts. When it touches the graphic button on the screen, the touch screen The haptic feedback system can drive various connection devices according to a pre-programmed program, and can be used to replace the mechanical button panel and create a live-action audio and video effect through the liquid crystal display screen. As the latest computer input device, the touch screen is the simplest, most convenient and natural way of human-computer interaction. It gives multimedia a new look and is an attractive new multimedia interactive device. Mainly used in public information inquiry, leadership office, industrial control, military command, electronic games, ordering songs, multimedia teaching, real estate pre-sales, etc.
Transparent, it directly affects the visual effects of the touch screen. The degree of transparency has transparency. The infrared technology touch screen and the surface acoustic wave touch screen are separated by a layer of pure glass. The transparency can be considered as a leader. Other touch screens should be carefully scrutinized. "Transparent" is only a very special in the touch screen industry. A general concept, many touch screens are multi-layer composite films. It is not enough to summarize its visual effects with transparency. It should include at least four characteristics: transparency, color distortion, reflectivity and clarity. The degree of reflection, such as the degree of specular reflection and the degree of diffractive reflection, is only the extent that the diffractive reflection on the surface of the touch screen has not reached the CD. For the user, these four metrics are basically enough.
Due to the existence of light transmittance and wavelength graph, the image seen through the touch screen inevitably produces color distortion with the original image. The static image perception is only the color distortion, and the dynamic multimedia image feels not very Comfortable, the color distortion is also the largest color distortion in the picture is naturally the smaller the better. The usual transparency is only the average transparency in the picture. Of course, the higher the better.
Reflective, mainly refers to the light and shadow behind the image due to specular reflection, such as people, windows, lights and so on. Reflective is the negative effect brought by the touch screen. The smaller the better, it affects the user's browsing speed. In severe cases, even the image characters cannot be recognized. The reflective environment of the touch screen is limited, and the lighting layout on the spot is forced to be adjusted. Most touch screens with reflective problems offer another surface-treated model: matte-faced touch screen, also known as anti-glare type, which is slightly more expensive, and has significantly reduced anti-glare reflectivity, suitable for halls or exhibitions where lighting is sufficient. Location, however, the anti-glare type of light transmission and clarity also have a significant decline. Sharpness, after some touch screens are installed, the writing is blurred, the details of the image are blurred, and the whole screen appears vague and unclear. This is the clarity. The problem of sharpness is mainly the touch screen of a multi-layer film structure, which is caused by repeated light and reflection between the film layers, and the anti-glare type touch screen also causes a decrease in sharpness due to surface frosting. The clarity is not good, the eyes are easy to fatigue, and there is some damage to the eyes. Pay attention to the discrimination when purchasing the touch screen.