Method an apparatus for forming an alignment pattern on a surface using a particle beam useful for a liquid crystal
US6124914A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1996 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | May 10, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133753
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.