| FACTS | ADVANTAGES | DISADVANTAGES |
|
Projected actuation life: 35 million actuations Activation points determined by drop in voltage sensed by A to D converter Typical border widths at least .25" Uses continuous flex tail construction to avoid lumps |
No false actuations 4096 x 4096 touch points No stylus needed - will operate when actuated with gloved finger Easily adapted to various sizes and display configurations Able to be sealed to NEMA 4 and IP65 specifications Easy to clean |
Maximum transmissivity of 80% May require periodic calibration Subject to mechanical wear, top layer may be scratched or cut Glass layer may break |
5-Wire Analog Touch Screens
5-wire analog touch screens operate by decoding or measuring a direct resistive circuit. This is done with six layers:
- A top polyester flex layer (coated with a thin conductive film)
- A polyester middle membrane with adhesive on both the top and bottom
- A glass layer (coated with a thin conductive film)
- An adhesive layer on the front or back for mounting
Printed spacer dots on the glass layer are used for controlling actuation force and to keep the conductive layers from premature contact.
