Fujitsu Microelectronics, TechOnline | Touch Sensor Controller Technology and Application Trends, techonline: 2009.
This technology backgrounder profiles the technologies used in touch-sensor controllers and explains the choices available for getting the best results from various types of touch-based user interfaces—a useful reference for anyone interested in using touch-sensor technology. Following this reference information is an in-depth look at how specific characteristics of Fujitsu touch-sensor controllers can optimize user interfaces. From mobile entertainment devices to white goods, touch sensors can be configured to deliver exactly the right user experience.
This technical reports briefly illustrates basic principles of capacitive touch sensors. The table below is helpful for the design of capacitive touch interfaces. The dielectric constant used in touch user interfaces are one important factor affecting the performance of the final system.
Dielectric Constants of Materials