Hideo FUJIKAKE, Hiroto SATO, Takeshi MURASHIGE, Yoshihide FUJISAKI, Taiichiro KURITA, Tadahiro FURUKAWA¹ and Fumio SATO

NHK Science and Technical Research Laboratories, 1-10-11 Kinuta, Setagaya-ku, Tokyo 157-8510, Japan
¹R & D Department, Kyodo Printing Co., 4-14-12 Koishikawa, Bunkyo-ku, Tokyo 112-8501, Japan

(Received October 20, 2005; Accepted November 29, 2005)

This paper describes a curved field-sequential-color matrix display using fast-response ferroelectric liquid crystal. Black matrix and transparent electrode patterns were formed on a thin plastic substrate by a transfer method from a glass substrate. While a composite film of liquid crystal and micro-polymers of walls and fibers was formed between the flexible substrates by printing, laminating and curing processes of a solution of monomers and liquid crystal, the mechanical stability was enhanced by use of multi-functional monomers to form large display panels. The image pixels of the matrix panel were driven by an active matrix scheme using an external switch transistor array at a frequency of 180 Hz for intermittent three-primary-color backlight illumination. The flexible A4-paper-sized color display with 24 × 16 pixels and 60 Hz field frequency was demonstrated by illuminating it with sequential three-primary-color lights from light-emitting diodes of the backlight. Our display system is useful in various information displays because of its freedom of setting and location.

Key words: flexible display, field-sequential-color technique, ferroelectric liquid crystal, micro-polymer structure, switch transistor array