Patent ID: 7589713

Claim:
A capacitive coordinate detection device in which a plurality of detection electrodes, which extend in the Y direction and are disposed with a predetermined gap in the X direction, each detection electrode being applied with a voltage, and a plurality of common electrodes, which are located between the detection electrodes adjacent to each other and extend in the Y direction, are formed in a base sheet, and in which when a contact body serving as a conductor is brought into contact with or approaches the base sheet, variations in a capacitance between the detection electrodes and the common electrodes opposite to the detection electrodes are detected to detect a location of a place which the contact body touches or approaches on an XY coordinate plane, wherein when one of the common electrodes is set as a reference common electrode, one of the detection electrodes, which is adjacent to one side of the reference common electrode, is set as a first detection electrode, and one of the detection electrodes, which is adjacent to the other side of the reference common electrode, is set as a second detection electrode, detours that approach one of the reference common electrode and the first detection electrode, and the reference common electrode and the second detection electrode are formed in at least the other one of the reference common electrode and the first detection electrode, and the reference common electrode and the second detection electrode in a specific place, and wherein when a capacitance between the reference common electrode and the first detection electrode is set to CR and a capacitance between the reference common electrode and the second detection electrode is set to CL, a pattern of each of the electrodes is set such that a composite capacitance between the capacitance CR and the capacitance CL can be kept constant in such a manner that one of the two capacitances compensates for an increase or a decrease of the other of the two capacitances.