Study of Twisted Optically Compensated Bend Cell Using Patterned Alignment

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概要

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• We have investigated a new liquid crystal cell based on a nonchiral-doped optically compensated bend (OCB) mode. The average pretilt angle of this cell was higher than that of a conventional OCB cell; when undisturbed, the twist-to-splay energy barrier induced by topological differences remained in a twist state. We have called this twisted cell a twisted optically compensated bend (TOCB) cell. The TOCB cell does not require any warm-up time or warm-up voltage in electrical driving, and the response time of the TOCB cell was as fast as that of a conventional OCB cell. In this study, the TOCB cell was made using a polymer network pattern with high-pretilt-angle alignment, called a patterned-TOCB cell. The patterned-TOCB cell arose from the irradiation of UV light through a photomask and onto a pi cell, which was filled with nematic liquid crystal (NLC) and UV-curable polymer mixture upon a curing voltage being applied to it.

• 2009-08-25

著者

• Wu Shune-long

  Department Of Chemical Engineering Tatung University

• Wu Jin-jei

  Department Of Electric Engineering Kao-yuan College Of Technology & Commerce

• Kuo Li-Yuan

  Department of Electro-optical Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 106, Taiwan, R.O.C.

• Chen Tien-Jung

  Department of Electro-optical Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 106, Taiwan, R.O.C.

• Lee King-Lien

  Department of Electro-optical Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 106, Taiwan, R.O.C.

• Wu Cheng-Sz

  Department of Electro-optical Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 106, Taiwan, R.O.C.

• Cheng Yuan-Hsin

  Department of Electro-optical Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 106, Taiwan, R.O.C.

• Wu Jin-Jei

  Department of Electro-Optical Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 106, Taiwan, R.O.C.

• Wu Shune-Long

  Department of Chemical Engineering, Tatung University, 40, Sec. 3, Jhong-Shan N. Rd., Taipei 104, Taiwan, R.O.C.

• LEE King-Lien

  Department of Electro-Optical Engineering, National Taipei University of Technology

• CHEN Tien-Jung

  Department of Electro-Optical Engineering, National Taipei University of Technology

関連論文

• Ray Tracing in an Inhomogeneous Liquid Crystal Cell
• Three-Dimensional Simulation of the Homeotropic to Planar Transition in Cholesteric Liquid Crystals Using the Finite Elements Method
• Phase Gratings in Pretilted Homeotropic Cholesteric Liquid Crystal Films
• Electrooptical Properties of Aligned Dye-doped Polymer Dispersed Liquid Crystal Films
• Effects of Dichroic Dye in UV-Cured Polymer Dispersed Liquid Crystal Films
• Laser- and Electric-Field-Induced Local Refraction Index Change in Nematic Liquid Crystal Film
• High Transparent Sheet Polarizer Made with Birefringent Materials
• Electrooptical Properties of an Aligned Phase-Change Guest-Host Mode Liquid Crystal Display
• Linear Gray Level Adjustment for Ferroelectric Liquid Crystal Cell
• Radiation Characteristics of Active Frequency-Scanning Leaky-Mode Antenna Arrays (Special Issue on Microwave and Millimeter Wave Technology)
• Brightness Enhancement with a Fingerprint Chiral Nematic Liquid Crystal
• Variation in the absolute photonic band gap of rods ranging from square to octagonal in square lattices
• Reduction in Driving Voltage of Vertically Aligned Ferroelectric Liquid Crystal Display by Diminishing Anchoring Force of Alignment Layer
• Effect of Alignment Layers on the Response Time in a Half V-Shaped Ferroelectric Liquid Crystal Cell
• Study of Twisted Optically Compensated Bend Cell Using Patterned Alignment
• Electro Optical Characteristics of High-Pretilt Twisted Liquid Crystal pi-Cells
• Stability Improvement of a Twisted-Vertical Aligned Nematic Liquid Crystal Cell
• Effect of Curing Voltage on Formation of Polymer-Aligned Liquid-Crystal Pi Cells
• Electro-Optical Properties of Reverse Mode Polymer Dispersed Liquid Crystal Films
• Method for Measuring Twist Angle of Nematic Liquid Crystal Cell
• The Transverse Motions of Charged Nano-Particles under an AC Electric Field in a Nematic Liquid Crystal Cell
• Observation of Electric-Field-Driven Modulated Textures in Cholesteric Liquid Crystal Cells
• Linear Gray Level Adjustment for Ferroelectric Liquid Crystal Cell
• Electrooptical Characteristics of Liquid Crystal $\pi$-Cells Sustained by Aligned Polymers
• Study of the Transient Phenomenon during Homeotropic to Planar Transition in Cholesteric Liquid Crystal Cells
• Electrooptical Properties of Aligned Dye-doped Polymer Dispersed Liquid Crystal Films
• Electro Optical Characteristics of High-Pretilt Twisted Liquid Crystal pi-Cells

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