Touch screen stack-up processing

A multi-touch sensor panel, comprising:

• a first substrate having a plurality of first traces of substantially transparent conductive material formed thereon;
• a plurality of second traces of the substantially transparent material;
• a fluid-tight gap formed between the plurality of first and second traces;
• and
• a fluid having substantially no bubbles and an optical index similar to the optical index of the plurality of first and second traces held within the fluid-tight gap, the fluid for making the gap and the plurality of first and second traces substantially transparent;
• wherein the plurality of first and second traces are oriented to cross over each other at crossover locations separated by the fluid, the crossover locations forming mutual capacitance sensors for detecting touches.

A mobile telephone including a multi-touch sensor panel, the multi-touch sensor panel comprising:

• a first substrate having a plurality of first traces of substantially transparent conductive material formed thereon;
• a plurality of second traces of the substantially transparent material;
• a fluid-tight gap formed between the plurality of first and second traces;
• and
• a fluid having substantially no bubbles and an optical index similar to the optical index of the plurality of first and second traces held within the fluid-tight gap, the fluid for making the gap and the plurality of first and second traces substantially transparent;
• wherein the plurality of first and second traces are oriented to cross over each other at crossover locations separated by the fluid, the crossover locations forming mutual capacitance sensors for detecting touches.

A digital audio player including a multi-touch sensor panel, the multi-touch sensor panel comprising:

• a first substrate having a plurality of first traces of substantially transparent conductive material formed thereon;
• a plurality of second traces of the substantially transparent material;
• a fluid-tight gap formed between the plurality of first and second traces;
• and
• a fluid having substantially no bubbles and an optical index similar to the optical index of the plurality of first and second traces held within the fluid-tight gap, the fluid for making the gap and the plurality of first and second traces substantially transparent;
• wherein the plurality of first and second traces are oriented to cross over each other at crossover locations separated by the fluid, the crossover locations forming mutual capacitance sensors for detecting touches.