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| The main characteristics of the touch screen |
| The first characteristic of touch screen:
Transparent, it directly affects the touch screen visual effect. There is a question of degree of transparent transparent, infrared touch screen technology and surface acoustic wave touch screen only separated by a layer of pure glass, transparent is outstanding, other touchscreen that will need to refine a, "transparent", in the touch panel industry, is a very broad concept, a multi touch screen is composite film multilayer transparent, with only a little to summarize its visual effect is not enough, it should include at least four characteristics: transparency, color distortion, reflection and clarity, can also be subdivided, such as reflective mirror reflecting the degree and extent including diffraction reflecting degree, but the touch screen surface diffractive reflective hasn't reached CD disk the extent, to the users, the four metrics have basically enough.
Because the light transmittance and wavelength graph exists, distortion by image inevitably touch screen to see the original image is produced with color, static image feeling just color distortion, dynamic multimedia image feeling is not very comfortable, color distortion degree is maximum color map of the distortion of the nature is as small as possible. Usually said transparency will be average transparency in the graph, of course the higher the better.
Reflective, mainly refers to the specular reflection caused by image overlapping behind the light, such as figure, windows, lights etc.. Reflection is the negative effect brought by the touch screen, the smaller the better, it affects the user's browsing speed, serious and even cannot recognize the image character, reflecting strong touch screen using environmental restrictions, lighting layout site was forced to need to adjust. Touch screen presence of most reflective problem would provide another after surface treatment models: frosted surface touch screen, also called anti glare type, price slightly high somewhat, anti glare reflective decreased, suitable hall or exhibition places, in the lighting is very sufficient however, anti glare type transparency and clarity will have relatively substantially drop. Definition, after some touch screen to install illegible, the details of the image is fuzzy, the entire screen appears hazy, see not too clear, this is the definition is too bad. The clarity of the main problem is the touch screen of multilayer film structure, and due to the film layers of light reflection and refraction repeatedly, in addition the antiglare type touch screen due to surface grinding is also causing lower definition. Clarity is not good, eye fatigue, also have certain harm to the eye, the purchase should pay attention to the discrimination of touch screen.
Second characteristics of touch screen:
The touch screen is an absolute coordinate system, to choose which directly point to the mouse, and this kind of relative positioning system is the essential difference between a place of intuitive. Characteristics of absolute coordinate system is every positioning coordinate has no relation with the positioning of a coordinate, the touch screen is a set of independent coordinates system in physics, each touch data through the calibration data into coordinates on the screen so that requires the touch screen this set of coordinates is not under any circumstances the output data of the same point is stable, if not stable, so that the touch screen can not guarantee the absolute coordinate location, from the touch screen are most afraid of is the problem: drift. The technical principle all can not guarantee that touch the same point touch screen every time sampling of the same data will inevitably drift this problem, only the capacitive touch screen there are drift.
Third characteristics of touch screen:
The detection and location of all kinds of touch, touch screen technology is to rely on their own sensors to work, and even some touch screen itself is a set of sensor. Their positioning principle and the respective sensors used determines the touch screen response speed, reliability, stability and life. | | | author: Published at: 2014/12/20 11:02:22 |  |
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