Press Release

Capacitive Touch Panel Controller SSD2521

Offers true multi-touch function to detect 4 fingers movement simultaneously

(Hong Kong – 25 May, 2009) Solomon Systech today announced a Capacitive Touch Panel Controller of true multi-touch function for up to 7″ WVGA display panel. It can detect 4 fingers movement at the same time and therefore can create many fascinating functions such as dragging and enlarging image with simply fingers pressing on display screen.

A user-friendly interface is always a successful factor of a handheld product design and the touch panel is probably a most welcome solution that provides substantial flexibility for a fancy interface design.  Generally, resistive touch panels are adopted in touch interface designs, but are increasingly changing to capacitive touch panels due to the benefits of better durability and higher optical clarity.  Besides these physical advantages, capacitive touch panels scale new heights in realizing multi-touch application, which has changed the perception of the touch panel interface.

With such distinctive features, the capacitive touch panel will become a mainstream touch technology and bring the market lots of innovative touch interface designs.

The capacitive touch panel controller SSD2521 from Solomon Systech is a touch interface solution to fulfill the latest market needs.  This controller integrates all the necessary components and functions into a single chip such as power circuits, panel driving and sensing circuits, high resolution ADC, fast response digital signal processor (DSP) and finger tracking unit.  To support high accuracy and fast touch detection, the DSP adopts several arithmetic algorithms for finger extraction and tracking.  It tracks maximum four fingers simultaneously and reports the absolute coordinate of each finger.  In addition, it can detect individual touch incidents and events based on the tracked finger coordinates.  SSD2521 supports true multi-touch and can drive up to 7″ capacitive touch panels on a WVGA display.  SSD2521 is an easy-to-use touch panel controller with excellent cost performance.


The SSD2521 samples are now available. Please contact our local sales office listed on the Solomon Systech website at or email us at for more information.


SSD2521 is capable to detect maximum 4 fingers movement and enables user to operate the system more than a click. With the Multi-Touch feature, many more fascinating functions can be created.

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