Avago Develops New Touchscreen Interface

­Avago Technologies says that it has developed an innovative new touch screen interface that is capable of tracking up to four simultaneous touch points without the problem of ghost points that are found in some competing capacitive sensing technologies.

Other key features of Avago's touch screen interface include 500 dpi resolution for jitter free smooth tracking; hover rejection and palm detection to prevent false touch responses; good adjacent touch resolution for finer screen features and sensitivity; and 13-inch per second tracking speed to provide screen navigation that is fast, responsive and suitable for gaming applications.

Avago added that its touch screen interface does not require any touch sensitivity scaling, noise tuning or capacitive balancing. It also has a robust design that allows for flexible ASIC placement on flex or printed circuit boards. To simplify the assembly process, this device has a patent pending, built-in self test for panel indium tin oxide (ITO) breakage 'open/shorts,' which means no application test fixture is required resulting in scalability and quick turnaround of sensor panel prototypes and efficient manufacturing. Panel integrity tests can also be run on devices in the field. Moreover, this touch screen controller offers configurable registers for customization and debugging, and pairs with both glass and polyethylene terephthalate (PET) sensor panels.

"Today's announcement of our new touch screen panel is yet another example of technology leadership in this market, and helps to reaffirm our position as a major supplier of navigation interfaces to all the major Smart Phone and mobile communications handset manufacturers," said Khin-Mien Chong, vice president and general manager, Navigation Interface Division, Avago Technologies. "Our touch screen interface controller is designed to enhance the overall touch screen experience."

Avago also said that several unnamed mobile handset manufacturers are currently sampling its touch screen controller for use in their handsets.

Posted to the site on 12th October 2009