Abstract
In this paper we experimentally demonstrate a sheet-type micro-needle electro-tactile display. It is thin and flexible enough to be easily attached to our body and can create tactile stimulation at low voltage. We developed the fabrication processes and then, investigated the minimum voltages to stimulate tactile receptors. We consider that when we have more displays on the body, more information can be transferred to the user. We attached the displays to the forearm and experimentally deduced the maximum number of the displays when the user can discriminate the stimulation from each display. In addition, we investigated infection caused by the insertion of the needle using a swab test. No bacteria were found on the display after 3 hours of insertion test.
