Optical film, retardation plate, elliptica polarizing plate, liquid crystal display device and compound
US9481658B2 · kind B2 · utility
4Cited by
3References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 21, 2014 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Nov 21, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/03
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An optical film including at least one compound represented by formula (1) is disclosed. In the formula, Y11, Y12 and Y13 each independently represent methine or a nitrogen atom; R11, R12 and R13 each independently represent formula (A), (B) or (C) or a hydrogen atom, provided that at least two of R11, R12 and R13 each independently represent formula (A), (B) or (C). In the formulae, L12, L22, and L32 each represent a 5-membered heterocyclic group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.