Alignment layer for liquid crystal element and method of produci

Details Alignment layer for liquid crystal element and method of produci Alignment layer for liquid crystal element and method of produci

1994-03-28

1996-01-23

Ryan, Patrick J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428 1, 428141, 428210, B32B 900

Patent

active

054864038

ABSTRACT:
An alignment layer for use in liquid crystals including a macromolecular material deposited on a glass substrate, the macromolecular material composed of main molecular chains which are, on the average, aligned in a first direction. A series of parallel microgrooves are formed in the macromolecular material and aligned perpendicular to the first direction, each microgroove being separated by a ridge having a triangular cross-section, and each ridge having first and second sides meeting at an apex, wherein the first side has a shorter length than the second side. As a result, disclination does not occur and sufficient reliability against external forces and heat may be obtained. In addition, numerous methods are disclosed for forming the alignment layer.

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