In nowadays,Projected pcap capacitive touch screen have already been immersed in many applications in our lives.But what’s Pcap capacitive touch screen?Today this article will explain very clearly for you.
The capacitive touch screen is a four-layer composite glass screen. The inner surface and the inter layer of the glass screen are each coated with a layer of ITO. The outermost layer is a thin layer of silica glass protective layer. The inter layer ITO coating is used as the working surface, the four corners are led out Four electrodes. And the inner layer of ITO is a shielding layer to ensure a good working environment.
When a finger touches the metal layer, due to the electric field of the human body, it is form a coupling capacitor between the user and the surface of the touch screen. For high-frequency current, the capacitor is a direct conductor, so the finger draws a small current from the contact point. This current flows from the electrodes on the four corners of the touch screen, and the current flowing through these four electrodes is proportional to the distance from the finger to the four corners. The controller calculates the position of the touch point by accurately calculating the ratio of these four currents.
Regardless of the advantages or disadvantages of touch screens. There are good and bad things and we should look at it with the right perspective. It's just that after we know these advantages and disadvantages. They can better help us choose which kind of better solution when doing a project, and maximize its strengths and avoid weaknesses. Because there have some project use the capacitive touch screen will be more better . Like many of the industrial application,they need such as multi touch,long life and low maintenance cost and so on. So the capacitive touch screen is their best choice.
In conclusion, Dingtouch as a professional touch screen manufacturer with more than 10 years touch screen experience.We have many capacitive touch screen .Such as 10.1 inch touch screen,15 inch touch screen,15.6 inch touch screen,17 inch touch screen,18.5 inch touch screen,19 inch touch screen,21.5 inch touch screen. However, we also welcome to customize your own touch screen . Contact our team today to lean what capacitive touch screen are best for our retail business needs. Contact us NOWemail@example.com
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