Touch sensitive switching device

A touch sensitive switching device comprising:

• a touch plate having a plurality of switching operation units on a surface of the touch plate, each switching operation unit being touch-operated;
• a film sensor having a plurality of electrodes, each of which is arranged on a backside of the touch plate opposite to a corresponding switching operation unit, and is opposed to the corresponding switching operation unit, a touch-operation to one switching operation unit being detected by a potential change of a corresponding electrode;
• and
• an adjustment plate arranged between the touch plate and the film sensor and made of material having a dielectric constant different from a dielectric constant of the touch plate,
• wherein a part of the adjustment plate at a position corresponding to each of the plurality of switching operation units has a different thickness.