| FACTS | ADVANTAGES | DISADVANTAGES |
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ITO touch screens are glass coated with Indium Tin Oxide, a transparent conductive film that allows a clear touchscreen to be placed over a display. The cover sheet has a hard, durable coating on the outer side, and a conductive coating on the inner side. The glass allows them to be built for rugged environments.Projected actuation life: 1 million actuations Activation points determined by intersecting etched rows and columns Typical border widths at least .25" |
No false actuations Low cost Can be as small as 1"x1" 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 Uses continuous flex tail construction to avoid lumps No recalibration necessary Easy to clean |
Finite number of touch points Maximum transmissivity of 80% May require periodic calibration Subject to mechanical wear, top layer may be scratched or cut Glass layer may break |
ITO Analog Resisitive
ITO analog resisitive 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)
- An adhesive spacer
- A glass layer (coated with a thin conductive film)
- An adhesive layer on the backside of the glass for mounting
- A top polyester flex 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.
