Composite comprising a polymer and a blue phase liquid crystal, a method for preparing the composite, and a liquid crystal display device comprising the composite
US9139776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2013 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | May 2, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2019/546
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a composite comprising a polymer and a blue phase liquid crystal (BPLC). The polymer is a crosslinked and non-liquid crystalline polymer, the BPLC is dispersed in said polymer, and the ratio of the polymer to the BPLC by weight (Wp/Wl) satisfies the relationship: 12:88<Wp/Wl≦30:70, wherein the Wp is the weight of the polymer, and Wl is the weight of the BPLC. The composite exhibits a very wide temperature range of blue phase of the BPLC, and can respond to an electric field at a millisecond level. The composite has an excellent stability, and a lower viscosity, while a wide viewing angle and a low driving voltage can be achieved. The invention also provides a method for preparing the composite, and a LCD device comprising the composite. The method of the present invention is simple and efficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.