DIAGONAL TYPE COORDINATE DETECTING DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce the power consumption for driving a panel part, to improve the SN ratio and to improve a detection coordinate system by making a diagonal potential inclination or diagonal current distribution with respect to a resistor. SOLUTION: This device is closed by four concave parabolic sides and provided with one layer of a face resistor 5 of a pseudo-rectangle or a rectangle being symmetrical with respect to a center point and a switch circuit connected to the four vertexes of the resistor 5 and a controlling part. Then, the switch circuit makes diagonal potential inclination or diagonal current distribution with respect to the resistor 5. In such a case, a diagonal pressure-sensitive type coordinate detecting device (touch panel) by DC potential inclination is used. Then, the voltage of a DC power supply 13 is respectively applied to A to D points by the combination of the ON/OFF states of switches A9 (SWA) to D12 (SWD). When voltage E is further applied (driven) between A and C, the B and D points are turned off, and when the voltage E is applied between B and D, the A and C points are turned off.