Please use the product filter below to help you find a small size capacitive touchscreen rugged display monitor that is suitable for your application. Xenarc Technologies also provides OEM / ODM and customization services if you don't find a small capacitive touchscreen that matches your requirements.
As opposed to the resistive touchscreen, which relies on the mechanical pressure made by the finger or stylus, the capacitive touchscreen makes use of the fact that the human body is naturally conductive.
Capacitive screens are made of a transparent, conductive material—usually ITO—coated onto a glass material. It’s the glass material that you touch with your finger.
In a surface capacitive setup, there are four electrodes placed at each corner of the touchscreen, which maintain a level voltage over the entire conductive layer.
When your conductive finger comes in contact with any part of the screen, it initiates current flow between those electrodes and your finger. Sensors positioned under the screen sense the change in voltage, and the location of that change.
In a device that uses a projected capacitive setup, transparent electrodes are placed along the protective glass coating in a matrix formation.
One line of electrodes (vertical) maintain a constant level of current when the screen isn’t in use. Another line (horizontal) are triggered when your finger touches the screen and initiates current flow in that area of the screen.
The matrix formation creates an electrostatic field where the two lines intersect. This is one of the most sensitive types of touchscreens, and is how some phones can sense a finger touch even before you make contact with the screen itself.
Projected capacitive technology also allows you to use the touchscreen even when you’re wearing thin gloves.
Resistive touchscreen advantages include:
Capacitive touchscreen advantages include:
The choice to use a capacitive or resistive touchscreen depends largely on the application for the device.
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