Multi-domain LCD and method of making same

Details Multi-domain LCD and method of making same Multi-domain LCD and method of making same

1998-04-09

1999-09-14

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349127, 349128, 349136, 349117, G02F 11337, G02F 11347

Patent

active

059530910

ABSTRACT:
A multi-domain liquid crystal display includes multiple liquid crystal alignment domains per pixel. In certain embodiments, only a single mechanical buffing step is required per substrate to provide the multiple domains per pixel. A continuous base underlying mechanically buffed alignment layer is provided, and a reactive alignment layer is provided thereon. The reactive alignment layer is doped so as to cause twist of molecules therein. The reactive layer may be photo-polymerizable and patterned so as to form an array of alignment portions and expose/uncover a corresponding array of areas of the underlying buffed alignment layer. Thus, liquid crystal molecules contacting the patterned reactive alignment portions are aligned in one direction while liquid crystal molecules contacting the exposed mechanically buffed polyimide layer are aligned in another direction. Multiple domains are thus provided, with only a single mechanical buffing step being necessary.

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