Patent ID: 9547404
Date: 2017-01-17
CPC Classifications: G06F

Claim:
1. An analog resistive-film touch panel comprising: a planar sheet-like first member; a planar sheet-like second member facing the first member; a plurality of transparent conductive film regions provided on a surface of the first member facing the second member and are aligned in a first direction, adjacent transparent conductive film regions are electrically insulated from each other; pairs of driving electrodes, each pair of driving electrodes respectively corresponds to and is provided on one of the transparent conductive film regions, each of the driving electrode pairs includes a first electrode and a second electrode that are arranged so as to face each other across the corresponding first transparent conductive film region in a second direction orthogonal to the first direction; a second transparent conductive film provided on a surface of the second member facing the first member; a pair of detection electrodes that includes a first detecting electrode and a second detecting electrode provided on the second transparent conductive film, wherein the first detecting electrode and the second detection electrode are arranged so as to face each other across the second transparent conductive film region in the first direction: pairs of resistors, each of the pairs respectively corresponds to one of the pairs of driving electrodes, each pair of resistors includes a first resistor connected to the first driving electrode of the corresponding pair of driving electrodes and a second resistor connected to the second driving electrode of the corresponding pair of driving electrodes; and a controller that discriminates which transparent conductive film regions has touched said second transparent conductive film based on voltage value detected through the pair of detecting electrodes, and sequentially applies voltage to one of the first electrodes at a time through the corresponding first resistor; wherein voltages having the same voltage values is applied to each first resistor, a combined resistance value of the first resistor and the second resistor of each of the pairs of resistors are the same, while the resistance value of each of the first resistors are different from each other so that voltage of the different voltage value is respectively applied to each transparent conductive film region and the controller discriminates the transparent conductive film region that has touched the second transparent conductive film based on the detected voltage value, and the pair of driving electrodes into which the voltage is applied.