Digitiser pad with force sensing resistor - has FSR layer sandwiched between resistive and conductive layers, and several electrodes under electrical potential connecting to resistive layer.

摘要

The digitiser pad contains a structure of free shape which is created by sandwiching a FSR layer (8) between a resistive layer (1) and a conductive layer (7). At least two electrodes (2,4) connect with the edge of the resistive layer, under electrical potential. Several current measurers are positioned between the electrodes and corresp. current sources. Another current source (9) connects to the conductive layer. ADVANTAGE - Long operational life, reduced reaction times when pressure applied, eliminates risk of short circuits between electrodes.