Dispersive Signal Technology - Bending Wave
Sensor Materials
Glass substrate, piezoelectric transducers
Principle of Operation
- Touch creates a bending wave through the medium of the glass substrate.
- Bending waves radiate to the sensor edges and are detected by piezoelectric receptors in border area.
- Electronics compute touch location based on algorithms or by use of signal comparison references.
Pros and Cons
Pros | Cons |
Impervious to surface contaminants | Few major suppliers |
Touch activated by bare finger, gloved finger, or stylus | Limited to one resolvable point with gesture capability |
Transmission is > 90% | |
Able to offer flat front surface design (no bezel) |
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