Method an apparatus for forming an alignment pattern on a surfac

Details Method an apparatus for forming an alignment pattern on a surfac Method an apparatus for forming an alignment pattern on a surfac

1996-05-10

2000-09-26

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349124, 349125, G02F 11337

Patent

active

061249149

ABSTRACT:
A method of generating a patterned alignment direction on an alignment surface for a liquid crystal display cell is described. The cell is formed by forming a first alignment direction on an alignment surface, such as a polyimide surface of the cell. A second alignment direction is formed on the alignment surface. The first and second alignment directions are formed by a variety of sequences of treatments. An example of a first sequence is a first step of rubbing the alignment surface and thereafter a second step of selectively exposing (preferably using a mask) the alignment surface to a treatment selected from the group of exposure to electromagnetic radiation and exposure to a particle beam. Another example of a sequence is a first step of exposing the alignment surface to a treatment selected from the group of electromagnetic radiation and a particle beam thereafter selectively exposing (preferably through a mask) the alignment surface to another particle beam.

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