Touch display apparatus, driver integrated circuit and touch display panel
The invention provides a touch display apparatus, a driver integrated circuit and a touch display panel. The driver integrated circuit includes a first pad, at least one second pad, a display driving channel, a touch sensing channel, a switching circuit, and a control circuit. The switching circuit is coupled to the display driving channel, the touch sensing channel and the first pad. In a display phase, the switching circuit and the routing circuit are controlled to couple the display driving channel to a data line of the touch display panel via the first pad, and a control signal for controlling the routing circuit is via the at least one second pad. In a touch phase, the switching circuit and the routing circuit are controlled to couple the touch sensing channel to a common electrode of the touch display panel via the first pad.
1. A driver integrated circuit, adapted to drive a touch display panel, comprising:
a first pad, adapted to be electrically connected to a routing circuit of the touch display panel;
at least one second pad;
a display driving channel;
a touch sensing channel;
a first switching circuit, coupled to the display driving channel, the touch sensing channel and the first pad; and
a control circuit, coupled to a control terminal of the first switching circuit and the at least one second pad, wherein,
in a display phase, the first switching circuit and the routing circuit are controlled to couple the display driving channel to a data line of the touch display panel via the first pad, and a control signal for controlling the routing circuit is via the at least one second pad, and
in a touch phase, the first switching circuit and the routing circuit are controlled to couple the touch sensing channel to a common electrode of the touch display panel via the first pad.
2. The driver integrated circuit according to claim 1 , wherein in the display phase, a common voltage source provides a common voltage to the common electrode via the routing circuit.
3. The driver integrated circuit according to claim 2 , wherein the common voltage source is comprised in the driver integrated circuit.
4. The driver integrated circuit according to claim 1 , wherein in the touch phase, the data line is floated by turning off a switching path of the routing circuit.
5. The driver integrated circuit according to claim 1 , wherein in the touch phase, the data line is driven with a signal having a same phase as that of a touch driving signal generated from the touch sensing channel, and the touch driving signal is applied to the common electrode.
6. The driver integrated circuit according to claim 5 , wherein in the touch phase, the data line is driven with the same signal as the touch driving signal.
7. The driver integrated circuit according to claim 6 , wherein in the touch phase, the first pad is connected to both of the data line and the common electrode via the routing circuit to allow the data line also receiving the touch driving signal.
8. The driver integrated circuit according to claim 1 , further comprising:
a signal generating circuit, generating a load free driving signal having a same phase as that of a touch driving signal generated from the touch sensing channel, and providing the load free driving signal to the data line via the routing circuit in the touch phase, wherein the touch driving signal is provided to the common electrode in the touch phase.
9. The driver integrated circuit according to claim 8 , further comprising:
a third pad;
a common voltage source, generating a common voltage; and
a second switching circuit, coupled to the common voltage source, the signal generating circuit and the third pad, and controlled by the control circuit, wherein the load free driving signal is output from the signal generating circuit to the data line via the second switching circuit and the third pad in the touch phase, and the common voltage is output from the common voltage source to the common electrode via the second switching circuit and the third pad in the display phase.
10. A touch display panel, comprising:
a data line;
a common electrode; and
a routing circuit, coupled to the data line and the common electrode, wherein
in a display phase, the routing circuit is controlled to couple the data line to a first pad of a driver integrated circuit, and
in a touch phase, the routing circuit is controlled to couple the common electrode to the first pad of the driver integrated circuit for applying a touch driving signal to the common electrode.
11. The touch display panel according to claim 10 , wherein in the display phase, a common voltage source provides a common voltage to the common electrode via the routing circuit.
12. The touch display panel according to claim 11 , wherein the driver integrated circuit comprises the common voltage source.
13. The touch display panel according to claim 10 , wherein in the touch phase, the data line is floated by turning off a switching path of the routing circuit.
14. The touch display panel according to claim 10 , wherein in the touch phase, the data line is driven with a signal having a same phase as that of the touch driving signal.
15. The touch display panel according to claim 14 , wherein in the touch phase, the data line is driven with the same signal as the touch driving signal.
16. The touch display panel according to claim 15 , wherein in the touch phase, the first pad of the driver integrated circuit is connected to both of the data line and the common electrode via the routing circuit to allow the data line also receiving the touch driving signal.
17. The touch display panel according to claim 14 , wherein
the signal having the same phase as that of the touch driving signal is output from a signal generating circuit comprised in the driver integrated circuit.
18. A touch display apparatus, comprising:
a driver integrated circuit, comprising a first pad, at least one second pad, a display driving channel, a touch sensing channel, a first switching circuit and a control circuit, wherein the first switching circuit is coupled to the display driving channel, the touch sensing channel, and the first pad; and
a touch display panel, comprising a data line, a common electrode, and a routing circuit, wherein,
in a display phase, the first switching circuit and the routing circuit are controlled to couple the display driving channel to the data line via the first pad, and a control signal for controlling the routing circuit is via the at least one second pad, and
in a touch phase, the first switching circuit and the routing circuit are controlled to couple the touch sensing channel to the common electrode via the first pad.
19. The touch display apparatus according to claim 18 , wherein in the display phase, a common voltage source provides a common voltage to the common electrode via the routing circuit.
20. The touch display apparatus according to claim 18 , wherein in the touch phase, the data line is floated by turning off a switching path of the routing circuit.
21. The touch display apparatus according to claim 18 , wherein in the touch phase, the data line is driven with a signal having a same phase as that of a touch driving signal generated from the touch sensing channel, and the touch driving signal is applied to the common electrode.
22. The touch display apparatus according to claim 21 , wherein in the touch phase, the data line is driven with the same signal as the touch driving signal.
23. The touch display apparatus according to claim 22 , wherein in the touch phase, the first pad is connected to both of the data line and the common electrode via the routing circuit to allow the data line also receiving the touch driving signal.
24. The touch display apparatus according to claim 18 , wherein the driver integrated circuit further comprising:
a signal generating circuit, generating a load free driving signal having a same phase as that of a touch driving signal generated from the touch sensing channel, and providing the load free driving signal to the data line via the routing circuit in the touch phase, wherein the touch driving signal is provided to the common electrode in the touch phase.
25. The touch display apparatus according to claim 24 , wherein the driver integrated circuit further comprising:
a third pad;
a common voltage source, generating a common voltage; and
a second switching circuit, coupled to the common voltage source, the signal generating circuit and the third pad, and controlled by the control circuit, wherein the load free driving signal are output from the signal generating circuit to the data line via the second switching circuit and the third pad in the touch phase, and the common voltage are output from the common voltage source to the common electrode via the second switching circuit and the third pad in the display phase.
26. The touch display apparatus according to claim 18 , further comprising:
a signal generating circuit, generating a load free driving signal having a same phase as that of a touch driving signal generated from the touch sensing channel, and providing the load free driving signal to the data line via the routing circuit in the touch phase, wherein the touch driving signal is provided to the common electrode in the touch phase.
27. The touch display apparatus according to claim 26 , further comprising:
a common voltage source, generating a common voltage; and
a second switching circuit, coupled to the common voltage source, and the signal generating circuit, wherein the load free driving signal are output from the signal generating circuit to the data line via the second switching circuit in the touch phase, and the common voltage are output from the common voltage source to the common electrode via the second switching circuit in the display phase.