Avago Technologies - High Performance Touch Screen Interface Technology for Smart Phones and Portable Electronic Communications Devices

A touch screen system typically consists of an LCD or organic light-emitting diode (OLED) display, a touch sensitive panel, a protective cover lens, and a touch screen controller. Avago’s multi-touch, capacitive touch screen controller has been specifically designed to offer highly-accurate, responsive and fluid on-screen navigation to greatly enhance the end-user’s experience. 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.

Designed for ease of adoption and manufacturing, Avago’s 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. In addition to these key product features, a complete development kit, which includes software and sensor panel design guides are provided to further ease the implementation of this capacitive touch panel into customer designs.

“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’s new capacitive touch panel controller is currently shipping to one of the world’s leading portable media player manufacturers and receiving excellent industry reviews for its multi-touch performance. Additionally, several key mobile handset manufacturers are currently sampling Avago’s touch screen controller for use in their next generation designs.