Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.368, 4213-4220, 2001
A study on wide viewing angle and fast response time characteristics for the novel VA mode
We investigated the wide viewing angle and the fast response time characteristics for negative dielectric anisotropy nematic liquid crystal (NLC) using a vertical-alignment (VA) mode on a rubbed polyimide (PI) surface. Good voltage-transmittance (V-T) curves using a VA - 1/4 pi cell and a VA-pi cell without a negative compensation film were measured. The iso-viewing angle characteristics using a VA - 1/4 pi cell and a VA-pi cell without a negative compensation film can be achieved. The fast response time of 24.2 ms for NLC was successfully observed. Consequently, the iso-viewing angle, fast response time, and low driving voltage characteristics using a VA - 1/4 pi cell and a VA-pi cell on a rubbed PI surface can be achieved.
Keywords:vertical alignment;rubbing;wide viewing angle;nematic liquid crystal;VA-1/4 pi cell;VA-pi cell