The first feature of the touch screen:
Transparent, it directly affects the visual effect of touch screen. Transparent and transparent, infrared technology touch screen and surface acoustic touch screen only a layer of pure glass, transparent can be considered outstanding, the other touch screen this will be a good knock, "transparent", in the touch screen industry, is a very general concept, a lot of touch screen is a multilayer composite film, only It is not enough to use a transparent point to summarize its visual effect. It should include at least four features: transparency, color distortion, reflectivity and clarity, and can be redivided, for example, the degree of reflection, including mirror reflectivity and diffraction, is only the extent to which the surface of the touch screen does not reach the CD disk. For users, these four metrics are basically enough.
Because of the existence of light transmission and wavelength graph, the image that is seen through the touch screen inevitably produces color distortion with the original image. The static image feeling is only the distortion of the color, the dynamic multimedia image feeling is not very comfortable, and the color distortion degree is also the smaller the maximum color distortion in the graph is naturally smaller. The better. Generally speaking, transparency is only the average transparency in the picture, and the higher it is, the better.
Reflectivity, mainly refers to the reflection of the image caused by the reflection of the shadow, such as shadows, windows, lights and so on. The negative effect is the negative effect of the touch screen, the smaller the better, the better it is, it affects the user's browsing speed, and even the image character can not be identified in serious case. The use environment of the reflective screen is limited, and the lighting layout of the scene is also forced to be adjusted. Most of the touch screens that have anti light problems provide another type of surface treatment: the touch-screen of the grind surface, also called the anti glare type, the price is slightly higher, the anti glare type is obviously reduced, and it is suitable for the great hall or exhibition place with very good lighting, but the transparency and clarity of the anti glare are also larger. The decline in amplitude. Clarity, when some touch screens are installed, the handwriting is blurred, the image details are blurred, the whole screen is blurred, and it is not clear, that is, the clarity is too bad. The main problem of clarity is the touch screen of multilayer film structure, which is caused by the refraction and refraction of the light between the film layers. In addition, the anti glare touch screen also causes the sharpness due to the surface grinding. Poor definition, easy eye fatigue and eye damage. Attention should be paid when choosing the touch screen.
The second features of the touch screen:
The touchscreen is the absolute coordinate system. If you want to choose which point you want to click directly, the essential difference between the relative positioning system like mouse is intuitive. The characteristic of the absolute coordinate system is that each positioning coordinate is not related to the last positioning coordinate. The touch screen is a set of independent coordinate positioning system in physics. The data of each touch is transferred to the coordinate on the screen by calibrating the data. In this way, the output of the touch screen does not control the output of the same point. The data is stable. If it is not stable, then the touch screen can not guarantee the absolute coordinates. The technical principle can not guarantee the same touch screen with the same touch of each sampling data at the same point, there is the problem of drift, and the only capacitive touch screen that has drift phenomenon at present.
The third features of the touch screen:
Touch detection and positioning, all kinds of touch-screen technology are dependent on their own sensors to work, and even some touch screen itself is a set of sensors. Their positioning principles and their respective sensors determine the speed, reliability, stability and life of the touch screen.
Hangzhou Kaike Electronics Co., Ltd.
Address: No. 2. Dadi Road, Haining Agricultural External Development Zone 314408,
Contact Person: May Wong
Telephone: 86-571-86830690 Fax: 86-571-86687367
Cell Phone: 86-15158112598