Capacitive touch screen controller
Solomon Systech

Touch panel is a common user interface which is widely used on comput ing device such as cashier machine, PC, PDA and smart phone. The most common touch panel technology is resistive touch panel but its poor durability and transparency enforce the market to shift to a new technology - Capacitive Touch Panel. Unlike resistive touch panel, the capacitive touch panel requires a controller to compute and transform the touch signal to a simple data format for the system. To fulfill the market needs, Solomon Systech proudly presents a series of single chip Capacitive Touch Panel Controllers with multi touch support.

These controllers integrate all the necessary components and functions such as power circuits, panel driving and sensing circuits, high resolution ADC, fast response digital signal processor (DSP) and finger tracking unit into single chips. To support high accuracy and fast touch detection, the DSP adopts several arithmetic algorithms for finger extraction and tracking. It tracks a maximum of ten fingers and reports the absolute coordinate of each finger. In addition, it can detect individual touch incidents and events based on the tracked finger coordinates. SSD2533 support true multi-touch and can drive up to 11 inch Full HD capacitive touch panel. They are easy-to-use touch panel controllers with excellent cost performance.

Applications: Tablet PC, Mobile handset, Personal Navigation Device, UMPC, MP4, PMP, gaming device, digital photo frame, etc.