Driving Circuit, Touch Display Apparatus, and Method for Driving Touch Display Apparatus
First Claim
1. A touch display apparatus comprising:
- a plurality of first electrodes configured to be embedded in a display panel;
a second electrode configured to be positioned outside the display panel, and configured to be spaced apart from the plurality of first electrodes; and
a driving circuit configured to output a first electrode driving signal to the plurality of first electrodes and to receive a touch sensing signal from the plurality of first electrodes in a touch sensing period, and configured to output a second electrode driving signal to the second electrode and to receive a force sensing signal from the second electrode in a force sensing period.
1 Assignment
0 Petitions
Accused Products
Abstract
The present embodiments relate to a driving circuit and a touch display apparatus for sensing a user'"'"'s touch position and touch force with respect to a display panel, and further relate to a driving method thereof. The touch display apparatus may include a plurality of first electrodes that are configured to be embedded in a display panel, and a second electrode that is configured to be positioned outside the display panel. The touch display apparatus may read a force sensing signal from the second electrode through a signal detecting unit that is electrically connected to the second electrode. Therefore, it is possible to sense a touch force without separating a force sensing signal from a signal received from the first electrode, and to sense a user'"'"'s touch force through the driving of the second electrode regardless of the driving mode of the first electrode.
36 Citations
20 Claims
-
1. A touch display apparatus comprising:
-
a plurality of first electrodes configured to be embedded in a display panel; a second electrode configured to be positioned outside the display panel, and configured to be spaced apart from the plurality of first electrodes; and a driving circuit configured to output a first electrode driving signal to the plurality of first electrodes and to receive a touch sensing signal from the plurality of first electrodes in a touch sensing period, and configured to output a second electrode driving signal to the second electrode and to receive a force sensing signal from the second electrode in a force sensing period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for driving a touch display apparatus that includes a plurality of first electrodes that are embedded in a display panel and a second electrode that is positioned outside the display panel, the method comprising:
-
outputting a first electrode driving signal to the plurality of first electrodes in a touch sensing period; receiving a touch sensing signal from the plurality of first electrodes through a signal detecting unit, that is electrically connected to the plurality of first electrodes and the second electrode, in the touch sensing period; outputting a second electrode driving signal to the second electrode in a force sensing period; and receiving a force sensing signal from the second electrode through the signal detecting unit in the force sensing period. - View Dependent Claims (10, 11, 12, 13)
-
-
14. A driving circuit comprising:
-
a signal generating unit configured to generate a first electrode driving signal that is applied to a plurality of first electrodes embedded in a display panel in a touch sensing period, and configured to generate a second electrode driving signal that is applied to a second electrode positioned outside the display panel in a force sensing period; an electrode driving unit configured to output the first electrode driving signal to the plurality of first electrodes in the touch sensing period, and configured to output the second electrode driving signal to the second electrode in the force sensing period; and a signal detecting unit configured to receive a touch sensing signal from the plurality of first electrodes in the touch sensing period, and configured to receive a force sensing signal from the second electrode in the force sensing period. - View Dependent Claims (15, 16, 17, 18, 19, 20)
-
Specification