论文信息 - New Gray Level Control Technique and Its Characterization for Antiferroelectric Liquid Crystal Cells

New Gray Level Control Technique and Its Characterization for Antiferroelectric Liquid Crystal Cells

A new gray-level control technique for antiferroelectric liquid crystal cells under phase transition from the field-induced ferroelectric state to antiferroelectric state has been investigated. A continuous gray level is realized by optimizing the holding voltage and is closely related to the value of the interval pulse voltage divided by the interval pulse width. Negative interval pulse voltage with short interval pulse width is effective to shorten the response time from the field-induced ferroelectric state to gray-level state. From stroboscopic micrographs, a multidomain comprising ferroelectric and antiferroelectric domains is found to be stabilized due to the pinning effect of focal-conic fan texture along the smectic layer direction.

Manabu Watanabe | Hiroyoshi Onnagawa | Hiroyuki Okada | Kazuo Miyashita

[1] H. Orihara,et al. Switching Properties in Antiferroelectric Liquid Crystals , 1991 .

[2] Hideo Takezoe,et al. Correspondence between Smectic Layer Switching and DC Hysteresis of Apparent Tilt Angle in an Antiferroelectric Liquid Crystal Mixture , 1990 .

[3] Manabu Watanabe,et al. Electro-Optic Responses of Antiferroelectric Liquid Crystals with Very Short Reverse Pulse Voltage , 1993 .

[4] Yoichi Takanishi,et al. Self-Recovery from Alignment Damage under AC Fields in Antiferroelectric and Ferroelectric Liquid Crystal Cells , 1991 .

[5] H. Takezoe,et al. Smectic Layer Switching by an Electric Field in Ferroelectric Liquid Crystal Cells , 1989 .

[6] M. Fukui,et al. Layer Structure of Antiferroelectric Liquid Crystal MHPOBC Studied by X-Ray Diffraction , 1990 .

[7] H. Takezoe,et al. Direct Method with Triangular Waves for Measuring Spontaneous Polarization in Ferroelectric Liquid Crystals , 1983 .

[8] H. Takezoe,et al. Tristable Switching in Surface Stabilized Ferroelectric Liquid Crystals with a Large Spontaneous Polarization , 1988 .

[9] H. Orihara,et al. Multiplexing Performance of Antiferroelectric Liquid Crystal Device , 1992 .

[10] H. Takezoe,et al. Relation between Spontaneous Polarization and Rotational Viscosity in Enantiomeric Mixtures of Ferroelectric Liquid Crystals , 1988 .