Patent ID: 6445426
Filing Date: 2002-09-03
Classification: G06F

Abstract:
A touch panel comprising:a top plate and a base plate; a upper conductive layer, formed on the top plate, having a pair of first electrodes disposed on its edges to be opposed in a first direction, the first electrodes being applied by a driving voltage; a lower conductive layer, formed on the base plate, having a pair of second electrodes disposed on its edges to be opposed in a second direction normal to the first direction, the second electrodes being applied by a driving voltage; a plurality of dot spacers, located in between said upper conductive layer and lower conductive layer, the upper conductive layer and the lower conductive layer facing each other with a certain specified clearance therebetween, the dot spacers made of an elastic material; and a controller for detecting a coordinate signal of a position on which the upper conductive layer and the lower conductive layer are contacted with each other by an external pressure, wherein a plurality of through holes are formed on at least either one of the upper conductive layer and the lower conductive layer, so that a resistance between the electrodes can be varied by varying dimensions of the through holes and intervals between the through holes.