Touch panels for wide aspect ratio applications

A touch sensitive system, comprising:

• a continuous touch sensitive area;
• a plurality of spaced apart first electrodes disposed in the touch sensitive area and extending along a first direction;
• a plurality of spaced apart second electrodes disposed in the touch sensitive area and extending along a different second direction;
• a plurality of nodes, each node being defined by corresponding first and second electrodes traversing each other at the node, the touch sensitive system being configured to detect a location of a touch applied proximate a node by detecting a change in a coupling capacitance between the corresponding first and second electrodes traversing each other at the node, wherein each first electrode traverses at least one, but not all, of the second electrodes, and each second electrode traverses at least one, but not all, of the first electrodes;
• and
• multiple zone controllers, each zone controller comprising:
• a drive unit configured to generate drive signals for drive electrodes for the scan zone;
• a sense unit configured to generate response signals for receive electrodes for the scan zone;
• and
• an analyzer configured to determine touch locations based on the response signals.

A touch sensitive system, comprising:

• a touch sensitive area having a ratio between height and width greater than 2:1 and having a touch resolution that is substantially uniform across the touch sensitive area;
• a plurality of spaced apart first electrodes disposed in the touch sensitive area and extending along a first direction;
• a plurality of spaced apart second electrodes disposed in the touch sensitive area and extending along a different second direction;
• a plurality of nodes, each node being defined by corresponding first and second electrodes traversing each other at the node, the touch sensitive system being configured to detect a location of a touch applied proximate a node by detecting a change in a coupling capacitance between the corresponding first and second electrodes traversing each other at the node, wherein each first electrode traverses at least one, but not all, of the second electrodes, and each second electrode traverses at least one, but not all, of the first electrodes;
• and
• a touch controller comprising:
• multiple zone first/second units, each zone first/second unit configured to generate first signals for first electrodes and second signals for second electrodes for a scan zone, and
• an analyzer coupled to an output of each of the multiple zone first/second units, the analyzer configured to determine multi-touch locations based on the second signals.

A touch sensitive system, comprising:

• a touch sensitive area;
• a plurality of spaced apart drive electrodes disposed in the touch sensitive area and extending along a first direction;
• a plurality of spaced apart receive electrodes disposed in the touch sensitive area and extending along a different second direction, each drive and receive electrode extending continuously across the touch sensitive area, the drive electrodes and the receive electrodes arranged in a plurality of scan zones, each drive electrode in a scan zone traversing all the receive electrodes in the scan zone and not traversing any receive electrode in any other scan zone;
• a plurality of nodes, each node being defined by corresponding drive and receive electrodes traversing each other at the node, the touch sensitive system being configured to detect a location of a touch applied proximate a node by detecting a change in a coupling capacitance between the corresponding drive and receive electrodes traversing each other at the node;
• and
• multiple zone controllers, each zone controller comprising:
• a drive unit configured to generate drive signals for drive electrodes for the scan zone;
• a sense unit configured to generate response signals for receive electrodes for the scan zone;
• and
• an analyzer configured to determine touch locations based of the response signals.