Method for treating an aligning film for a liquid crystal display element and a method for preparing a liquid crystal display element
US5798810A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 28, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Oct 28, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133788
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for treating an aligning film for a liquid crystal display element and a method for preparing a liquid crystal display element are proposed. The said treating method comprises rubbing a specified aligning film formed on a transparent substrate with a transparent electrode and thereafter radiating soft X-ray for 2 seconds or more in gas. The said preparing method comprises arranging a transparent electrode on a pair of transparent substrates, forming an aligning film consisting of an organic high molecular compound on the said transparent electrode, treating the said aligning film by a rubbing treatment, assembling the substrates face to face each other via a spacer, and then sealing a liquid crystal material. By a method for treating an aligning film according to the invention, it is possible to lower display unevenness of a liquid crystal display element and to improve an yield of product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.