“Biri-Biri” is a touch display technology that provides tactile feedback through electrical stimulation to fingertips. By placing a conductive layer on the surface of a pressure-sensitive touch panel and stimulating muscles and nerves in the fingertips with low-frequency AC signals, it can deliver pseudo-vibration feedback and shocks to the fingertips in response to touch input.
Compared to conventional vibration motor-based tactile feedback, the electrical stimulation method offers advantages such as enabling thinner devices and finer control over stimulation intensity and frequency. This technology enables diverse tactile expressions on touch panels, including the sensation of pressing virtual buttons, texture representation, and warning notifications.
A similar mechanism applied to game controllers is explored in the “Electrical Stimulation Controller” research.