Mitsutaka Nagae

63.1: Active-Matrix Backplane with Printed Organic TFTs for QR-LPD

Printed OTFT was fabricated with combination of printing technique and photo-assisted surface modification to define precise electrode pattern on plastic/glass substrate and gate insulator. Utilize this technique with solution processable gate insulating polymer and semiconductive polymer, 100 dpi AM backplane was obtained with uniform mobility. As a result, QRLPD was successfully driven.

23.2: A 10in. Flexible Active‐Matrix OTFT Array for QR‐LPD‐Based Motion Picture Displays

A 10 inch, 80 dpi flexible Active Matrix Organic-TFT array was fabricated with solution process. Exceeds 10:1 of high contrast image was displayed eith QR-LPD. The active matrix array was refreshed with 300 micro seconds of gate pulse width, successfully. To reduce degradation of displaying image due to leakage current through paracitic capacitance in the circuit array, double sided flexible backplane structure was introduced. One side of plastic substrate that OTFT array was printed and the other side that Pixel electrodes was printed, are connected through via patterned by laser abration and filled with conductive ink by printing method. As a result, high aparture ratio of pixel electrode array without degradation of displaying image caused by leakage current through signal electrode was obtained.