2-face viewable liquid crystal display using 2-domain vertically aligned cell

A self-aligned multi-domain liquid-crystal display on polymer gratings in a vertically aligned configuration

Jae-Hong Park Yoonseuk Choi Tae-Young Yoon Chang-Jae Yu Sin-Doo Lee Abstract — We report on a new method of fabricating a vertically aligned multi-domain liquid-crystal display (LCD) using surface-relief gratings. A linear array of surface-relief gratings was produced by using a photosensitive polymer material coated on glass substrates by the illumination of the UV light through a photomask. T...

Polar anchoring energy measurement of vertically aligned liquid-crystal cells

An electric-field method is developed for measuring the polar anchoring energy of vertically aligned nematic liquid-crystal cells. Both theoretical analyses and confirming experimental results are presented. Vertically aligned liquid-crystal cells with buffed polyimide alignment layers are used to investigate the measurement techniques. Based on the voltage-dependent transmittance of the liquid...

Polarization rotator using a hybrid aligned nematic liquid crystal cell.

Using both direct mathematical analysis and numerical modeling based on the predictions by Jones [1] it is shown that if the director in a liquid crystal cell is in a plane which lies at 45 degrees to the incident polarization, then, for normally incident light, the transmission signal which conserves polarization will always have a phase difference of pi/2 from the transmission signal of the o...

The (hydro)dynamic temperature behaviour of vertically aligned liquid crystal displays

Vertically aligned liquid crystal displays (VA-LCDs) are very attractive for application in television sets and mobile devices because of their excellent contrast ratio and wide viewing angle, realized by using multi-domain structures. However, the dynamic behaviour of VA-LCDs can be affected by a reverse flow phenomenon [1], referred to as backflow, when a voltage step with amplitude exceeding...

Simple 4-Domain Twisted Nematic Liquid-Crystal Display