Pressure-sensitive resistor and pressure-sensitive sensor using the same

A pressure-sensitive sensor comprising:

• first and second base films opposite to each other;
• a pair of electrodes provided on first and second base films, respectively, between the first and second base films;
• and
• first and second pressure-sensitive resistors provided by two layers on the electrodes to form a predetermined gap between the first and second pressure-sensitive resistors, wherein:
• a contact state between the first and second pressure-sensitive resistors is changed in accordance with a pressure applied to at least one of the first and second base films;
• the electrodes are provided to change a resistance therebetween in accordance with the contact state between the first and second pressure-sensitive resistors;
• and
• each of the first and second pressure-sensitive resistors is constructed with a binder resin having an elasticity modulus in a range between 10 and 1000 Mpa, and a plurality of coated particles each of which includes an electrical conductive particle and a polymer layer coated on the electrical conductive particle, wherein the coated particles are dispersed in the binder resin.

A pressure-sensitive sensor comprising:

• first and second base films opposite to each other;
• a pair of electrodes provided on first and second base films, respectively, between the first and second base films;
• and
• a pressure-sensitive resistor provided by one layer on one of the electrodes to form a predetermined gap between the pressure-sensitive resistor and the other one of the electrodes, wherein:
• a contact state between the pressure-sensitive resistor and the other one of the electrodes is changed in accordance with a pressure applied to at least one of the first and second base films;
• the electrodes are provided to change a resistance therebetween in accordance with the contact state between the pressure-sensitive resistor and the other one of the electrodes;
• and
• the pressure-sensitive resistor is constructed with a binder resin having an elasticity modulus in a range between 10 and 1000 Mpa, and a plurality of coated particles each of which includes an electrical conductive particle and a polymer layer coated on the electrical conductive particle, wherein the coated particles are dispersed in the binder resin.