Neuromorphic circuits on flexible substrates for electronic skin

Purpose and goal:

The project has focused on exploring indium-gallium-zinc oxide (IGZO) technology as a basis for flexible electronics for prostheses, more specifically the electronics for touch sensors (tactile sensors) over larger areas with high sensor density that can bend (electronic skin, e-skin) which traditional silicon-based IC technology cannot. We have carried out an evaluation of our Japanese partner SEL´s technology, simulated solutions but unfortunately have not been able to manufacture or measure devices or circuits.

Expected results and effects:

The results show that SEL´s technology is very good, has some properties that facilitate circuit design, but the passive components - important for analog circuit design - need to be improved and supplemented. The selected design tools are not completely suitable for circuit design. We have learned a lot and hope to continue working with other suppliers of similar technology.

Approach and implementation:

The approach has followed the traditional one when it comes to this type of evaluation of a supplier´s technology by a customer; the same whether it concerns university companies or business companies. After writing the necessary NDA, we have gained access to documentation and design documentation, and have had regular meetings to discuss results. The linguistic/cultural differences were easy to deal with and also the time difference of 7-8 hours.