Touch panel and electronic device including the same

摘要

A touch panel and an electronic device are provided. The touch panel includes a first substrate; a second substrate that is spaced apart from the first substrate by a gap and includes a contact surface; driving electrodes that are formed on each of the first substrate and the second substrate; and electro-rheological fluid that is disposed in the gap. When a driving voltage is applied between the driving electrodes, a button area is delimited due to a variation in viscosity of the electro-rheological fluid at the button area. When a thickness of the gap is reduced to a value equal to or less than a threshold due to a pressing force applied to the contact surface at the button area, the driving voltage is cut off.

主权项

1. A touch panel comprising:
a first substrate; a second substrate that is spaced apart from the first substrate by a gap, the second substrate comprising a contact surface; a plurality of driving electrodes that are formed on each of the first substrate and the second substrate; an electro-rheological fluid that fills the gap between the first substrate and the second substrate; and a controller configured to apply a driving voltage between at least two opposing driving electrodes of the plurality of driving electrodes such that, a button area is delimited due to a variation in viscosity of a portion of the electro-rheological fluid between the at least two opposing driving electrodes, and cut off the driving voltage when a thickness of the gap between the first and second substrates at the button area is reduced to a value equal to or less than a threshold due to a pressing force applied to the contact surface at the button area.