PCAP SITO Structure
A Single Indium Tin Oxide ("SITO") touch sensor stack has a single ITO layer with the X-Y pattern, usually a diamond pattern, on the top surface of the substrate (glass or film). The patterning has cross bridges made of conductive and insulating materials allowing the X-Y electrodes to cross on the same layer of the substrate. This design eliminates the second layer of ITO present in DITO touch panel stacks and reduces the channel-routing margin outside the active area.
This is one of the most effective PCAP stack-ups, as it offers a high degree of accuracy as well as more control of charge time and sensitivity. SITO touch panels are the preferred solution for applications requiring high sensitivity control, rugged environments, touch surface moisture, glove usage, or stylus implementations.