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We have recently demonstrated fabrication of polymer thin film transistor (TFT) circuits by a combination of solution selfassembly and direct inkjet printing. Control over the morphology of the polymer semiconductor and uniaxial alignment of polymer chains parallel to the direction of current flow in the device is obtained by making use of polymer self-organisation. Accurate definition of the transistor channel and other circuit components is achieved by direct inkjet printing combined with surface energy patterning. Here we discuss the application of this novel manufacturing process for polymer TFTs to active matrix displays. We will focus on advantages and disadvantages of polymer TFT technology compared with conventional thin film silicon devices.

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We present a process for active matrix flat panel display manufacture by printing polymer thin film transistors. In this process, transistors are fabricated using soluble semi‐conducting and conducting materials. Accurate definition of the transistor channel and other circuit components is achieved by direct inkjet printing combined with surface energy patterning. We have used this process to create a 4,800 pixel, 50 dpi, active matrix display. This process is in principle environmentally friendly, low temperature, compatible with flexible substrates, cost effective and advantageous for short run length and large display sizes.