Solomon Systech launched a TDDI (Touch and Display Driver Integration) IC for PMOLED displays. The new SSD7317 (the world's first PMOLED TDDI IC) integrates touch and display microelectronics in a single chip and can enable thinner and lighter form factors and reduced manufacturing time and process - and higher display quality (higher light transmission) and touch performance.

Solomon Systech In-Cell Touch PMOLED Technology scheme
Solomon explains that the SSD7317 adopts a proprietary time multiplexing approach for display driving and in-cell touch detection, thereby enabling touch detection on traditional PMOLED display module with no modifications needed on the existing display module structure. Unlike traditional out-cell touch solutions (with separate display and touch IC) which need a dedicated ITO layer for touch sensor, the SSD7317 eliminates the touch ITO and PET substrate layers in addition to the bottom Optically Clear Adhesive (OCA).

The SSD7317 supports a 128x96 monochrome color resolution, and can supports single, double and long taps - in addition to slides (up/down and left/right).

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