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Dispersive Signal Technology (DST)

The Best of Both Worlds...

Dispersive Signal Technology is a new touch technology that recognises touch through vibrations made to the substrate. This is quite unlike any existing technology, and allows touch screens to be more robust and also allows the effect of a hand or drink resting on the surface of the screen to be ignored. Crucially, DST also combines all the best attributes of the established technology: exceptional light transmission, stylus support, accuracy, signature capture and all-glass durability.

DST locates sensors in each corner of the touch screen, which measure the vibrational energy. Advanced dispersion adjustment algorithms are then applied to the data, allowing accurate reporting of each touch. This approach helps eliminate issues with screen contaminants and surface scratches, and also allows a touch to be registered while a palm and/or object is resting on the screen’s surface. For example, a finger, gloved hand or stylus can initiate a touch while a person’s palm and drink are on the surface. The touch creates a vibration, which radiates a bending wave through the substrate from the point of contact spreading out to the edges – the resting items are ignored as they do not generate any vibrational energy.

DST delivers outstanding advantages to the point of sale, gaming and hospitality markets, by allowing these kiosk-type terminals to deliver a more compelling, error-proof and damage resistant solution.

Initial Touch Down Progressing Dispersion with the Beginning of Reflection Effects
Initial Touch Down Progressing Dispersion with the
Beginning of Reflection Effects
Highly Complex Dispersion Patter with Reflections Post-Algorithm Pattern
Highly Complex Dispersion
Patter with Reflections
Post-Algorithm Pattern


If you are interested to learn how Touch screen technology can help you, please Get in touch and one of our Customer Service team will respond to your request.

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3M Touch Systems
innovation you can touch

You can learn more with our Technology Overview (pdf file - 348KB). Here you can download Adobe® Acrobat® Reader.