Patent ID: 8653836
Filing Date: 2014-02-18
Classification: G06F

Abstract:
1. A coordinate detecting device for two-dimensionally detecting the position of a detection target from a change in capacitance due to the approach of the detection target, comprising: a plurality of first electrodes arranged in a first direction; a plurality of second electrodes arranged in a second direction and intersecting the plurality of first electrodes; a capacitance detecting circuit selectively connected to the first electrodes or the second electrodes; a first electrode switch configured to connect the first electrode to the capacitance detecting circuit or a power supply that supplies a predetermined voltage; and a second electrode switch configured to connect the second electrode to the capacitance detecting circuit or the power supply, wherein all of the plurality of second electrodes are connected to the power supply by the second electrode switch and the plurality of first electrodes are selectively connected to the capacitance detecting circuit by the first electrode switch, thereby detecting a first coordinate, which is the position of the detection target in the first direction, wherein all of the plurality of first electrodes are connected to the power supply by the first electrode switch and the plurality of second electrodes are selectively connected to the capacitance detecting circuit by the second electrode switch, thereby detecting a second coordinate, which is the position of the detection target in the second direction, and wherein when a plurality of first coordinates or a plurality of second coordinates are detected, capacitances between the first electrodes and the second electrodes corresponding to combinations of the detected first and second coordinates are measured, thereby specifying the position of the detection target.