We propose a concept of a flexible sensor array using a novel capacitive force sensor not having a vulnerable electrode on the force applied site.It has a lpc330v polymer domed structure inside which silicone oil is contained.When the force is applied, the oil is pushed into the surrounding thin channels, where the change in capacitance due to the inflowing dielectric oil is measured between two electrodes on the top and bottom surfaces of the channel.
Since the channel does not have a bang xxl switch duo directly applied external force to it, the electrodes do not suffer from damage problems.The change in capacitance was simulated using a simplified flow model.The first trial device of the sensing element has been fabricated.
A sensitivity of 0.05 pF/gf was achieved.