Driving method of liquid-crystal element

Abstract

Abstract PURPOSE:To form an image on a large screen at a high speed by connecting ferroelectric liquid crystal and FETs to intersections of an active matrix, and outputting a display signal obtained by impressing an electric field between a scanning and a common electrode to a display electrode. CONSTITUTION:Glass substrates 1 and 1' are coated with a transparent electrode and liquid crystal of chiral smectic C phase having a liquid-crystal molecule phase 2 oriented at right angles to glass surfaces is charged between the transparent electrodes. When a voltage higher than a threshold value is impressed between the substrates 1 and 1', the spiral structure of liquid-crystal molecules 3 is destroyed and bipolar moment 4 is made uniform in an upward direction E or downward direction E' according to the polarity of the voltage. This ferroelectric liquid crystal is connected to the active matrix M consisting of scanning electrodes 6 (GN, GN+1, and GN+2), display electrodes 7 (CN, CN+1, and CN+2), and common electrodes 8 (SN, SN+1, and SN+2) through FETs, and a signal is inputted to a scanning electrode 6 and a common electrode 7 to obtain an output signal at a display electrode 7. Consequently, a large image is formed and displayed 7 at a high speed.

Inventors

• 👤 Shinjiro Okada
• 👤 伸二郎 岡田
• 👤 Yasuyuki Tamura
• 👤 泰之 田村

Bibliographic Details