Touch-screen panel with multiple sense units and related methods

1. A panel for a touch position sensor, comprising:

a first panel region including a plurality of first touch sense channels for communication with a first sense unit; and

a second panel region adjacent to the first panel region, the second panel region including a plurality of second touch sense channels for communication with a second sense unit, wherein:

at least one touch sense channel associated with the first panel region and at least one touch sense channel associated with the second panel region are directly coupled to each of the first sense unit and the second sense unit.

2. The panel according to claim 1 , wherein the first and second panel regions overlap in a region having a width that is based on a size of an object to sense.

3. The panel according to claim 2 , wherein the width is substantially 3 cm.

4. The panel according to claim 2 , wherein the width is substantially 1 cm.

5. The panel according to claim 2 , wherein the width is substantially 0.5 cm.

6. A touch position sensor, comprising:

a panel comprising:

a first panel region including a plurality of first touch sense channels; and

a second panel region substantially adjacent to the first panel region, the second panel region including a plurality of second touch sense channels;

a first sense unit in communication with the plurality of first touch sense channels and at least one touch sense channel of the plurality of second touch sense channels, the first sense unit directly coupled to the at least one touch sense channel of the plurality of second touch sense channels; and

a second sense unit in communication with the plurality of second touch sense channels and at least one touch sense channel of the plurality of first touch sense channels, the second sense unit directly coupled to the at least one touch sense channel of the plurality of first touch sense channels.

7. The touch position sensor of claim 6 , wherein the at least one touch sense channel of the plurality of second touch sense channels in communication with first sense unit and the at least one touch sense channel of the first plurality of touch sense channels in communication with the second sense unit are located near the first panel region and the second panel region.

8. The touch position sensor of claim 6 , further comprising a first processing unit in communication with the first sense unit and a second processing unit in communication with the second sense unit, the first processing unit and the second processing unit cooperating to determine whether a touch occurred in a region where the second panel region is substantially adjacent to the first panel region.

9. The touch position sensor of claim 8 , wherein one of the first processing unit and the second processing unit reports the position of the touch.

10. The touch position sensor of claim 6 , further comprising a multiplexer in communication with the first sense unit and the second sense unit, the multiplexer determining the position of a touch.

11. A method for sensing a touch with a position sensor, comprising:

scanning touch sense lines, the touch sense lines including:

(a) a plurality of touch sense lines associated with a first sense unit;

(b) a plurality of touch sense lines associated with a second sense unit; and

(c) at least two sense lines included in both said pluralities that are each associated with both said sense units and that are directly connected to both sense units, the sense lines associated with both said sense units defining a channel set;

determining whether a touch has been sensed in different positions;

when a touch is sensed in different positions, determining the sense lines that sensed the touch; and

reporting the touch location based on the sensing from the sense lines that are located farthest from the edges of the channel set defined by the sense lines associated with both said sense units.