Hideo Chida

41.1: A Super-High Image Quality Multi-Domain Vertical Alignment LCD by New Rubbing-Less Technology

An MVA-LCD (multi-domain vertical alignment LCD) that provides super-high image quality has been developed by newly introduced rubbing-less technology. A newly introduced “protrusion” designed on the TFT substrates and on the color filter substrates automatically controls the directors of the LC molecules. By this technology we have successively developed four-domain 15″ MVA-TFT units that provide extremely wide viewing angle of more than 160 degrees, a high contrast ratio of 300:1 or more and a fast response of less than 25ms.

Effects and Structural Model of Surfactants on the Hysteresis Behavior of Polymer Dispersed Liquid Crystals

Abstract There are numerous reports in the literature dealing with the electro-optical properties of PDLC with experiments designed to reduce the materials hysteresis. Most suggest strong interaction relationship between the liquid crystals and the polymeric materials. We present the approach of correlating the hysteresis behavior of the PDLC films with the interaction of surfactants at the material interface. Experimental results and structural model will be described.

20.1: Dual‐domain Vertically Aligned TFT‐LCD Developed by Irradiation with Unpolarized UV Light from a Tube‐type Light Source

We have developed a dual-domain vertically aligned TFT-LCD by irradiation with unpolarized UV light from tube-type light source. We reduced disclination by fabricating protrusions and by optimizing the alignment material. The transmittance of a 15-inch diagonal TFT-LCD is twice that of IPS LCD, 1.5 times that of conventional MVA-LCD and 1.1 times that of TN-LCDs with Wide-View film.