Optimization of the Pretilt Angle of Liquid Crystal Alignment for IPS Mode LCD.

The in-plane switching(IPS)mode liquid crystal display(LCD)panels with different pretilt angles and alignment directions are prepared, and their electro-optical properties and viewing angle characteristics are examined. The examination shows that parallel alignment with a pretilt angle of about 3∗brings about a panel with very wide viewing angle characteristics and little color shift in relation to that viewing angle. The pretilt angle of 3∗can be achieved by conventional alignment film for Twisted Nematic mode LCD, and higher productivity of IPS-mode LCD panels in consequently expected. [ABSTRACT FROM AUTHOR]