Method of making a multi-touch input device for detecting touch on a curved surface

A method of making a multi-touch input device for a computing device, the method comprising:

• forming on a side of a substrate a first set of sensor elements, the first set defining a plurality of rows of a first array of sensor elements;
• forming on the side of the substrate a second set of sensor elements, the second set defining a plurality of columns of the first array of sensor elements, the rows and columns together defining a plurality of pixels of the multi-touch sensor, each pixel configured to detect touch at a location on the multi-touch input device over that pixel;
• forming on the side of the substrate connectors for the first set of sensor elements;
• forming on the side of the substrate an insulating layer over the connectors for the first set of sensor elements;
• forming connectors for the second set of sensor elements over the insulating layer;
• and
• forming a pressure sensor configured to detect touch pressure over the multi-touch input device by forming a second array of sensor elements, and a piezoresistive material in contact with the second array of sensor elements.

A method of making a multi-touch input device for a computing device, the method comprising:

• forming on a flexible, insulating substrate a first set of sensor elements, the first set defining a plurality of rows of an array of sensor elements;
• forming on the flexible, insulating substrate a second set of sensor elements, the second set defining a plurality of columns of the array of sensor elements, the rows and columns together defining a plurality of pixels of the multi-touch sensor, each pixel configured to detect touch at a location on the curved surface over that pixel;
• forming a piezoresistive pressure sensor configured to detect touch pressure over the multi-touch input device;
• and
• forming the substrate into a shape that conforms to the multi-touch input device and fixing the substrate to the multi-touch input device.