Photoreactive polymer and process of making the same
USRE45219E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Sep 14, 2032 |
Classification
- Technology area (CPC —)General
Abstract
Provided are a photoreactive polymer that includes a multi-cyclicmulticyclic compound at as its main chain and a method of preparing the same. The photoreactive polymer exhibits excellent thermal stability since it includes a multi-cyclicmulticyclic compound having a high glass transition temperature at as its main chain. In addition, the photoreactive polymer has a relatively large vacancy so that a photoreactive group can move relatively freely in the main chain therein. As a result, a slow photoreaction rate, which is a disadvantage of a conventional polymer material used to form an alignment layer for a liquid crystal display device, can be overcome.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.