Multidomain Vertical-alignment Liquid Crystal Display Research Articles

3D Modeling of Single-Domain and Multi-Domain Vertical Alignment LCDs for Direct-View and Microdisplay Geometries

We successfully developed a 3D liquid crystal display (LCD) modeling program and applied the program to modeling the single-domain vertical alignment (VA) and intrinsic fringe field controlled multi-domain vertical alignment (IFF MVA) LCDs. Our study showed that proper and stable IFF MVA operation was obtained in the microdisplay geometry but not in the direct-view geometry, whereas regular VA operation was obtained in the direct-view geometry but not in the microdisplay geometry.

Nanowire grid polarizer for energy efficient and wide-view liquid crystal displays

We report a liquid crystal display (LCD) using a nanowire grid polarizer (NWGP) to replace the bottom sheet linear polarizer (LP). The top LP and bottom NWGP configurations enable backlight recycling for enhancing optical efficiency while keeping a high contrast ratio and wide viewing angle. The electro-optic performance of this device configuration is studied based on the effective-medium theory and 4×4 matrix method. Results show that this configuration exhibits a 100:1 contrast ratio over 75° viewing cone in a film-compensated multidomain vertical alignment LCD and 10:1 over 65° viewing cone in a fringe-field switching LCD without any compensation film.

29.1: Invited Paper: Extraordinarily Wide‐View and High‐Transmittance MVA‐LCD

AbstractA new multi‐domain vertical‐alignment liquid crystal display (MVA‐LCD) is developed to achieve high transmittance, high contrast ratio and wide viewing angle. According to this design, the MVA‐LCD has a high transmittance by using conventional polarizer rather than circular polarizer. Accordingly, high contrast ratio, wide viewing angle and high transmittance can be achieved for MVA‐LCD simultaneously. Potential application for mobile display is emphasized.

P‐140: Optical Compensation of a High Transmittance MVA‐LCD by using Uniaxial Quarter Plates

AbstractA compensation method that uses uniaxial films is developed for widening the viewing angle of the high transmittance multidomain vertical‐alignment liquid crystal display (MVA‐LCD). Based on this design, the high‐transmittance MVA‐LCD has a complete 80° viewing cone for CR> 100:1. Potential application as a mobile display is emphasized.

Extraordinarily wide-view and high-transmittance vertically aligned liquid crystal displays

A compensation method that uses uniaxial films is developed for widening the viewing angle of the high-transmittance multidomain vertical-alignment liquid crystal display (MVA-LCD). Based on this design, the high-transmittance MVA-LCD is predicted to have a complete 80° viewing cone for contrast ratio (CR)>100:1. Experimental results indicate that the real high-transmittance MVA-LCD panel has a viewing angle more than the entire 80° viewing cone for CR>30:1. Potential application as a mobile display is emphasized.

P-141: A Wide-view Multi-domain Vertical-alignment Liquid Crystal Display with High Transmittance and High Contrast

A wide viewing angle multi-domain vertical-alignment liquid crystal display (VA-LCD) is proposed. According to this design, by integrating a kind of wide-view circular polarizer, a contrast ratio higher than 800:1 is predicted over the entire ±85° viewing cone with the transmittance higher than 33% for an eight-domain VA-LCD. Potential application for LCD television is emphasized.

15.4: Optical Compensation of a High Transmittance MVA-LCD

A new compensation method based on the Poincare sphere is developed for widening the viewing angle of the high transmittance multi-domain vertical-alignment liquid crystal display (MVA-LCD). According to this design, the high transmittance MVA-LCD has a viewing angle over the entire 80° viewing cone for CR> 100:1. Potential application for the mobile display is emphasized.

Extraordinarily high-contrast and wide-view liquid-crystal displays

A computer simulation model based on oblique-angle Jones matrix and Poincaré sphere is developed for optimizing the design of film-compensated multidomain vertical-alignment liquid crystal display (VA-LCD). According to this design, a contrast ratio higher than 10 000:1 is predicted over the entire ±85° viewing cone for the four-domain VA-LCD. Potential application for liquid-crystal display television is emphasized.

P-96: Design of Liquid Crystal Displays with 10000: 1 Contrast Ratio over ±85° Viewing Cone

A computer simulation model based on oblique angle Jones matrix and Poincaré sphere is developed for optimizing the design of film-compensated multi-domain vertical-alignment liquid crystal display (VA-LCD). According to this design, a contrast ratio higher than 10000:1 is predicted over the entire ±85° viewing cone for the four-domain VA-LCD. Potential application for LCD television is emphasized.