Sensing apparatus for touch and force sensing
First Claim
1. A touch and force sensing apparatus comprising:
- a touch electrode layer comprising a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along second direction, wherein the first direction is substantially perpendicular to the second direction;
a protection layer arranged on a side of the touch electrode layer;
a force electrode layer arranged on a side of the touch electrode layer, the side being opposite to the protection layer, the force electrode layer comprising at least one force sensing electrode;
a resilient dielectric layer, arranged on a side of the force electrode layer, the side being opposite to the touch electrode layer; and
a capacitance sensing module sequentially or randomly applying a touch driving signal to selected ones of the second touch electrodes, and sequentially or randomly receiving a touch sensing signal from selected ones of the first touch electrodes in a touch sensing operation;
the capacitance sensing module sequentially or randomly applying a force capacitance-exciting signal to the at least one force sensing electrode, and receiving a force sensing signal from the force sensing electrode in a force sensing operation;
wherein the touch driving signal is applied to the selected ones of the second touch electrodes at a first time, the touch sensing signal is received from selected ones of the first touch electrodes at the first time, the force capacitance-exciting signal is applied to the at least one force sensing electrode at the second time, the first time is different with the second time; and
wherein the capacitance sensing module applies an interlayer capacitance eliminating signal, with phase same as that of the force capacitance-exciting signal, to the first touch electrodes and the second touch electrodes in force sensing operation, wherein the interlayer capacitance eliminating signal is different with the touch driving signal and the force capacitance-exciting signal.
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Accused Products
Abstract
A sensing apparatus for touch and force sensing includes from, top to bottom, a protection layer, a touch electrode layer, a force electrode layer, and a resilient dielectric layer, and further includes a capacitance sensing module. In touch sensing operation, the capacitance sensing module sequentially or randomly applies a touch driving signal to selected ones of the second touch electrodes, and sequentially or randomly receives a touch sensing signal from selected ones of the first touch electrodes. In force sensing operation, the capacitance sensing module sequentially or randomly applies a force capacitance-exciting signal to the at least one force sensing electrode and obtains a force sensing signal from the force sensing electrode.
8 Citations
23 Claims
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1. A touch and force sensing apparatus comprising:
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a touch electrode layer comprising a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along second direction, wherein the first direction is substantially perpendicular to the second direction; a protection layer arranged on a side of the touch electrode layer; a force electrode layer arranged on a side of the touch electrode layer, the side being opposite to the protection layer, the force electrode layer comprising at least one force sensing electrode; a resilient dielectric layer, arranged on a side of the force electrode layer, the side being opposite to the touch electrode layer; and a capacitance sensing module sequentially or randomly applying a touch driving signal to selected ones of the second touch electrodes, and sequentially or randomly receiving a touch sensing signal from selected ones of the first touch electrodes in a touch sensing operation;
the capacitance sensing module sequentially or randomly applying a force capacitance-exciting signal to the at least one force sensing electrode, and receiving a force sensing signal from the force sensing electrode in a force sensing operation;wherein the touch driving signal is applied to the selected ones of the second touch electrodes at a first time, the touch sensing signal is received from selected ones of the first touch electrodes at the first time, the force capacitance-exciting signal is applied to the at least one force sensing electrode at the second time, the first time is different with the second time; and wherein the capacitance sensing module applies an interlayer capacitance eliminating signal, with phase same as that of the force capacitance-exciting signal, to the first touch electrodes and the second touch electrodes in force sensing operation, wherein the interlayer capacitance eliminating signal is different with the touch driving signal and the force capacitance-exciting signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A touch and force sensing apparatus comprising:
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a touch electrode layer comprising a plurality of touch sensing electrodes; a protection layer arranged on a side of the touch electrode layer; a force electrode layer arranged on a side of the touch electrode layer, the side being opposite to the protection layer, the force electrode layer comprising at least one force sensing electrode; a resilient dielectric layer, arranged on a side of the force electrode layer, the side being opposite to the touch electrode layer; and a capacitance sensing module sequentially or randomly applying a touch capacitance-exciting signal to the at least one touch sensing electrode, and sequentially or randomly receiving a touch sensing signal from the touch sensing electrode for touch sensing;
the capacitance sensing module applying a force capacitance-exciting signal to the at least one force sensing electrode, and receiving a force sensing signal from the force sensing electrode for force sensing;wherein the capacitance sensing module applies an interlayer capacitance eliminating signal, with phase same as that of the force capacitance-exciting signal, to the touch sensing electrodes in force sensing operation, wherein the interlayer capacitance eliminating signal is different with the touch driving signal and the force capacitance-exciting signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification