Patent ID: 8421773

Claim:
A driving method used for driving a resistive touch panel, the resistive touch panel including a first substrate, a first conductive layer disposed on the first substrate and comprising a first corner, a second corner, a third corner, and a fourth corner different from each other, a first conducting wire disposed on the first substrate and electrically connected to the first corner, a second conducting wire disposed on the first substrate and electrically connected to the second corner, a third conducting wire disposed on the first substrate and electrically connected to the third corner, a fourth conducting wire disposed on the first substrate and electrically connected to the fourth corner, a second substrate disposed parallel to the first substrate, a second conductive layer disposed on the second substrate and facing the first conductive layer, a fifth conducting wire electrically connected to a first side of the second conductive layer, a sixth conducting wire electrically connected to a second side of the second conductive layer, and a driving circuit electrically connected to the first, second, third, fourth, fifth, and sixth conducting wires, and the driving method comprising the steps of: supplying a first voltage to the sixth conducting wire and a second voltage to the second conducting wire, wherein the first voltage is larger than the second voltage; outputting a first-state detection voltage by the fifth conducting wire and outputting a second-state detection voltage by the fourth conducting wire when the resistive touch panel is touched; calculating out a contact resistance according to the first-state detection voltage and the second-state detection voltage; determining whether a single-touch operation or a multi-touch operation is performed according to the contact resistance; determining, when a multi-touch operation is performed, whether different touch points on the resistive touch panel are approaching to close to each other or moving away from each other according to the comparison between a current contact resistance and a previous contact resistance so as to recognize gestures performed on the resistive touch panel; supplying the first voltage to the third and fourth conducting wires and the second voltage to the first and the second conducting wires; outputting a first axial detection voltage by the fifth conducting wire when the resistive touch panel is touched; supplying the first voltage to the second and third conducting wires and the second voltage to the first and the fourth conducting wires; and outputting a second axial detection voltage by the fifth conducting wire when the resistive touch panel is touched, wherein, when a single-touch operation is performed, a first axial position is recognized according to the first axial detection voltage and a second axial position is recognized according to the second axial detection voltage.