Patent ID: 8269742
Filing Date: 2012-09-18
Classification: G06F

Abstract:
1. A manufacturing method of a coordinate position detecting device, the coordinate position detecting device including a resistive film formed on a substrate having a rectangular-shaped configuration, and a common electrode configured to apply a voltage to the resistive film, wherein an electric potential distribution is generated on the resistive film by supplying an electric potential from the common electrode to the resistive film and detecting an electric potential of a position where the resistive film is contacted, so that a contact position coordinate of the resistive film is detected, the manufacturing method comprising: forming the common electrode on the resistive film of four sides of the substrate; measuring the electric potential of the resistive film by plural probes contacting a surface of the resistive film while supplying the electric potential from the common electrode to the resistive film; calculating a resistive film removing area, based on a value of a measured electric potential, by a calculating part so that the electric potential distribution of the resistive film is made uniform; and removing the resistive film in the resistive film removing area calculated by the calculating part, by a laser light.