Apparatus for fabricating alignment film for improving alignment force of a liquid crystal and method for fabricating liquid crystal display panel using the same
US9128329B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2005 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Feb 9, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133788
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An alignment film and method of fabricating the alignment film are disclosed. A photosensitive alignment material is spread on an LCD array substrate or color filter substrate and partially cured. A soft mold is aligned on the partially cured alignment material. The soft mold has a concavo-convex pattern with grooves and projections. The alignment material is exposed to ultraviolet radiation through the soft mold and then developed. The differences between the indices of refraction of the soft mold and air cause interference in the ultraviolet radiation, leading to periodic variations in the exposure intensity of the alignment material. These variations result in crests and troughs being formed when the alignment film is developed. The developed alignment film is then cured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.