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US 11,379,077 B2Granted
Touch panel input device
AssigneeSharp Kabushiki Kaisha
InventorKoichi Sugiyama
Life of this patent
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Abstract
A touch panel input device includes a plurality of first electrode lines, a plurality of second electrode lines, a first drive circuit, a second drive circuit, a drive controller, a reception circuit, and a touch detector. The first drive circuit inputs a first drive signal to odd-numbered first electrode lines which are odd-numbered electrode lines among each of the plurality of first electrode lines from a first end portion side. The second drive circuit inputs a second drive signal to even-numbered first electrode lines which are even-numbered electrode lines among each of the plurality of first electrode lines from a second end side. The touch detector detects a touch on the touch surface based on a change in an output signal detected by the reception circuit.
Claims10
A touch panel input device comprising a touch surface, the touch panel input device comprising:
- a plurality of first electrode lines arranged to extend from a first end portion of the touch surface toward a second end portion of the touch surface opposed to the first end portion in a first direction;
- a plurality of second electrode lines arranged to extend from a third end portion of the touch surface toward a fourth end portion of the touch surface opposed to the second end portion in a second direction, and intersect with the plurality of first electrode lines at a plurality of intersections;
- a first drive circuit that inputs a first drive signal from the side of the first end portion to odd-numbered first electrode lines which are odd-numbered electrode lines among each of the plurality of first electrode lines;
- a second drive circuit that inputs a second drive signal from the side of the second portion to even-numbered first electrode lines which are even-numbered electrode lines among each of the plurality of first electrode lines;
- a drive controller that controls the first drive circuit and the second drive circuit;
- a reception circuit that detects an output signal on each of the plurality of second electrode lines;
- and
- a touch detector that detects a touch on the touch surface based on a change in the output signals detected by the reception circuit,
- wherein the touch detector calculates touch signal strength of one touch based on signal strength of the output signals corresponding to plural intersections among the plurality of intersections corresponding to the one touch detected by the reception circuit.
6 more elements
A touch panel input device comprising a touch surface, the touch panel input device comprising:
- a plurality of first electrode lines arranged to extend from a first end portion of the touch surface toward a second end portion of the touch surface opposed to the first end portion in a first direction;
- a plurality of second electrode lines arranged to extend from a third end portion of the touch surface toward a fourth end portion of the touch surface opposed to the second end portion in a second direction, and intersect with the plurality of first electrode lines at a plurality of intersections;
- a first drive circuit that inputs a first drive signal from the side of the first end portion to odd-numbered first electrode lines which are odd-numbered electrode lines among each of the plurality of first electrode lines;
- a second drive circuit that inputs a second drive signal from the side of the second portion to even-numbered first electrode lines which are even-numbered electrode lines among each of the plurality of first electrode lines;
- a drive controller that controls the first drive circuit and the second drive circuit;
- a reception circuit that detects an output signal on each of the plurality of second electrode lines;
- and
- a touch detector that detects a touch on the touch surface based on a change in the output signals detected by the reception circuit,
- wherein the drive controller comprises a drive mode setting circuit that sets a drive mode, and
- wherein the drive mode setting circuit sets the drive mode to either of an interlace drive mode for alternatively executing first drive control in which the first drive circuit sequentially inputs a signal to the odd-numbered first electrode lines from a line on the side of the third end portion to a line on the side of the fourth end portion in the order of arrangement and second drive control in which the second drive circuit sequentially inputs a signal to the even-numbered first electrode lines from a line on the side of the third end portion to a line on the side of the fourth end portion in the order of arrangement, and a non-interlace drive mode in which the first drive circuit and the second drive circuit sequentially input an input signal to all the electrode lines among each of the plurality of first electrode lines from a line on the side of the third end portion to a line on the side of the fourth end portion in the order of arrangement.
7 more elements
A touch panel input device comprising a touch surface, the touch panel input device comprising:
- a plurality of first electrode lines arranged to extend from a first end portion of the touch surface toward a second end portion of the touch surface opposed to the first end portion in a first direction;
- a plurality of second electrode lines arranged to extend from a third end portion of the touch surface toward a fourth end portion of the touch surface opposed to the second end portion in a second direction, and intersect with the plurality of first electrode lines at a plurality of intersections;
- a first drive circuit that inputs a first drive signal from the side of the first end portion to odd-numbered first electrode lines which are odd-numbered electrode lines among each of the plurality of first electrode lines;
- a second drive circuit that inputs a second drive signal from the side of the second portion to even-numbered first electrode lines which are even-numbered electrode lines among each of the plurality of first electrode lines;
- a drive controller that controls the first drive circuit and the second drive circuit;
- a reception circuit that detects an output signal on each of the plurality of second electrode lines;
- a touch detector that detects a touch on the touch surface based on a change in the output signals detected by the reception circuit,
- a first ground state switching circuit that switches between a ground state and a non-ground state of the odd-numbered first electrode lines;
- and
- a second ground state switching circuit that switches between a ground state and a non-ground state of the even-numbered first electrode lines,
- wherein the drive controller controls such that the first drive circuit inputs the first drive signal to the odd-numbered first electrode lines in a state where the electrode lines of the odd-numbered first electrode lines are set to a non-ground state by the first ground state switching circuit and the electrode lines of the even-numbered first electrode lines are set to a ground state by the second ground state switching circuit, and the second drive circuit inputs the second drive signal to the even-numbered first electrode lines in a state where the electrode lines of the odd-numbered first electrode lines are set to a ground state by the first ground state switching circuit and the electrode lines of the even-numbered first electrode lines are set to a non-ground state by the second ground state switching circuit.
8 more elements
Dependencies are inferred from the claim text.