Polar liquid crystal
US7427693B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 3, 2007 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Apr 3, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2019/0444
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds that are useful in compositions for flat panel displays, for example, are provided. The compounds provided are polar, and are useful in low threshold voltage mixtures. The compounds provided have the general structure: A and B are independently in each instance selected from the group consisting of 1,4-cyclohexane, 1,4-phenyl, 1,3-dioxan-5,2-diyl; pyridine-5,2-diyl; and pyrimidin-5,2-diyl; n and m are independently in each instance 0, 1 or 2; Z1 and Z2 are independently a single bond, —(CH2)2—, CF2O, OCF2, CH2O, OCH2, —C≡C—, COO, OOC; and Y is selected from the group consisting of: F, Cl, CN, OCH2F, CHF2, OCF3, and CF3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.