The surface capacitive touch screen has a conductive coating on the front surface with wires connected to each corner. A small voltage is applied to each of these 4 corners. The operation relies on the capacitance of the human body. When you touch the screen, a small current flows to the point, causing a voltage drop which is sensed at corners.
Available in both standard and custom touch screen sizes, Touch International’s surface capacitive touch screens are form, fit or function replacements for 3M™ and Elo™ touch sensors.
Surface capacitive touch screens can easily be employed on larger size (over 12 inches) applications. They have excellent optical clarity and high light transmission (88-92%) because the structure is only one glass layer. Surface capacitive touch screens have the fastest touch response time out of all the available technologies and can withstand regular cleaning with harsh chemicals.
Top 5 Surface Capacitive Highlights
*There is a change with the S-Cap parts that use 3M 4408 Double Coated Urethane Foam Mounting Tape. 3M has discontinued the 4408 and replaced it with 4008. The only difference is the color. The 4408 was black, the 4008 is white or neutral in color. Performance is exactly the same. Any part numbers affected by this change have been noted with a red asterisk on the Drawings page. If you would like more information on the new mounting tape, download the datasheet.
