Patent ID: 7825906

Claim:
A coordinate detecting device, comprising: a resistance film; a common electrode which applies electric potential to the resistance film; a voltage supplying section which supplies a voltage to the common electrode; wiring which supplies the voltage to the voltage supplying section; an insulation film disposed between the common electrode and the resistance film; and an electric potential supplying section formed in the insulation film for supplying the electric potential from the common electrode to the resistance film, wherein openings, which become the electric potential supplying section, are formed at outer side parts of the insulation film, a first distance between the openings at ends of the outer side parts being smaller than a second distance between the openings at a center of the outer side parts, and the coordinate detecting device detects a coordinate of a position on a panel when a user touches the position while an electric potential distribution is generated in the resistance film by being applied electric potential from the common electrode, wherein the openings are aligned along the outer side parts corresponding to each side of the panel.