Capacitive touch screens are curved or flat glass substrates coated with a transparent metal oxide. A voltage is applied to the corners of the overlay creating a minute uniform electric field. A bare finger draws current from each corner of the electric field, creating a voltage drop that is measured to determine touch location.

Microtouch’s ClearTek Capacitive touchscreens have some unique features:

ClearTek—A glass overcoat that protects the conductive coating, preventing damage by scratches, liquids, dust, grease CleanScreen—an anti-microbial coating applied to the top surface of the screen, which destroys any bacteria that come in contact with the surface of the touchscreen. Durability—ClearTek touchscreens have been tested to withstand over 225 million touches in any one location.

The only technology unaffected by surface contaminants such as dust, grease, moisture. Ideal for Indian conditions. First choice for use in any application unless touching with gloves. Used extensively in public access information kiosks, industrial automation, medical, gaming, banking, POS, hundreds of other applications.

Capacitive Options

TouchPen

TouchPen supports both finger touch and pen input on a ClearTek sensor. The tethered stylus, supports handwriting recognition, signature and data capture, annotation, and gloved-hand users. With TouchPen, you can select from dense menus, or work with detailed images to small to touch with a finger. A hand resting on the screen while writing is ignored because of the capacitive digitizer technology which intelligently distinguishes between pen and finger touch.

ToughTouch

ToughTouch is a ClearTek sensor with a layer of tempered glass laminated to the back. ToughTouch provides increased impact resistance for flat sensors in industrial, unattended, or vandal-prone environments. ToughTouch offers the same level of performance, and contaminant resistance as a ClearTek capacitive sensor, but with added impact resistance.

Privacy Touch

PrivacyTouch is a ClearTek sensor with a 3M Light Control Film Polycarbonate ( LCF-P) laminated to the back. The LCF-P is a thin plastic film containing closely spaced black micro louvers. This film allows for privacy viewing, only those viewers directly in front of the screen can view its contents. Viewers at other angles see only a dark screen.

Ideal for confidential viewing of CRTs, ATMs and anywhere else privacy is desired

Near Field Imaging

Near Field Imaging touch screens consist of two laminated glass sheets with a patterned coating of transparent metal oxide between them. An AC signal is applied to the patterned conductive coating, creating an electrostatic field on the surface of the screen. When a finger—gloved or ungloved—or other conductive stylus comes in contact with the touch screen surface, the electrostatic field is disturbed, and a touch is registered.

High durability, as touchscreen sensor is behind a glass sheet. Can withstand corrosive liquids, severe shock vibrations. For use in hazardous and harsh environments. Much more expensive than capacitive