Apparatus for driving of a touch panel having a dummy electrode and haptic mode
First Claim
1. An apparatus comprising:
- a touch panel including a plurality of touch driving electrodes, an elastic dielectric member provided on the plurality of touch driving electrodes, and a plurality of touch sensing electrode groups provided on the elastic dielectric member and respectively intersected and overlapped with the plurality of touch driving electrodes, wherein each of the touch sensing electrode groups includes a touch sensing electrode and a first dummy electrode being in parallel to each other on the elastic dielectric member; and
a touch driving circuit configured to;
in a touch point sensing mode, electrically float the first dummy electrode in a unit of a touch sensing electrode group and sense a change of capacitance through the touch sensing electrode of the touch sensing electrode group, andin a haptic mode, apply a voltage to a touch driving electrode and apply a reference voltage to the touch sensing electrode group, wherein the first dummy electrode of the touch sensing electrode group is electrically connected with the touch sensing electrode in the unit of the touch sensing electrode group in the haptic mode, andwherein the touch driving circuit generates touch force sensing data by electrically connecting the first dummy electrode to the touch sensing electrode in the unit of the touch sensing electrode group and sensing another change of capacitance through the touch sensing electrode while supplying a touch driving pulse to the touch driving electrode in accordance with a touch force sensing mode.
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Accused Products
Abstract
Embodiments relate to a touch panel with a haptic function and a method of operating the touch panel. The touch panel includes first electrodes and second electrodes intersecting the first electrodes. The touch panel further includes an elastic dielectric member disposed between the first electrodes and the second electrodes to separate the first electrodes and the second electrodes. The first electrodes are applied with a touch driving pulse during a sensing mode, and are applied with a voltage during a haptic mode. The second electrodes sense a touch sense signal responsive to the touch driving pulse in the sensing mode, and the second electrodes are applied with a reference voltage in the haptic mode. The elastic dielectric member vibrates in response to the voltage applied to the first electrodes in the haptic mode.
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Citations
16 Claims
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1. An apparatus comprising:
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a touch panel including a plurality of touch driving electrodes, an elastic dielectric member provided on the plurality of touch driving electrodes, and a plurality of touch sensing electrode groups provided on the elastic dielectric member and respectively intersected and overlapped with the plurality of touch driving electrodes, wherein each of the touch sensing electrode groups includes a touch sensing electrode and a first dummy electrode being in parallel to each other on the elastic dielectric member; and a touch driving circuit configured to; in a touch point sensing mode, electrically float the first dummy electrode in a unit of a touch sensing electrode group and sense a change of capacitance through the touch sensing electrode of the touch sensing electrode group, and in a haptic mode, apply a voltage to a touch driving electrode and apply a reference voltage to the touch sensing electrode group, wherein the first dummy electrode of the touch sensing electrode group is electrically connected with the touch sensing electrode in the unit of the touch sensing electrode group in the haptic mode, and wherein the touch driving circuit generates touch force sensing data by electrically connecting the first dummy electrode to the touch sensing electrode in the unit of the touch sensing electrode group and sensing another change of capacitance through the touch sensing electrode while supplying a touch driving pulse to the touch driving electrode in accordance with a touch force sensing mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification