Plastic Logic has added to its latest funding round with a multi-million dollar investment by Silicon Valley venture firm Oak Investment Partners.

The Cambridge-based printable plastic displays start-up has attracted $28m worth of investment this year alone, making it one of the largest European venture capital investments of 2005.

The list of investors includes Amadeus Capital Partners, Bank of America, BASF Venture Capital, Dow Chemical, Intel Capital, Mitsubishi and Siemens.

Proceeds will be used to commercialise the company’s flexible active-matrix displays. “The funding will accelerate our move to commercial trials of prototype products and to finalise our manufacturing process for transfer to mass production,” said company CEO Stuart Evans.

According to Bandel Carano, general partner at Oak: “The company has made stunning progress this year in building a prototype line that is already delivering A5-sized 100ppi SVGA (800x600) flexible active-matrix e-paper displays to its lead customers.”

This month Plastic Logic demonstrated in Japan what it claimed to be the largest flexible organic active matrix display, measuring 10 inches across the diagonal and just 0.4mm thick.

It has been suggested that plastic electronic circuits, including displays, which can be printed using cost effective techniques could enable the widespread low cost manufacturing of transistor arrays using plastic substrates.