Heteroaromatic isothiocyanates
US-2024124779-A1 · Apr 18, 2024 · US
Liquid-crystalline medium
US8968840B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8968840-B2 |
| Application number | US-201113170398-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 28, 2011 |
| Priority date | Jul 2, 2004 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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The present invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (Δ∈), which is distinguished by the fact that it has a value for the ratio γ 1 /Δn 2 in the range 6-45 with a clearing point of >60° C. and a Δ∈ of ≦−2.3. Media of this type are particularly suitable for electro-optical displays having active-matrix addressing based on the ECB, PA LCD, FFS or IPS effect.
First claim
Opening claim text (preview).
The invention claimed is: 1. A liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (Δ∈), which has a value for the ratio γ 1 /Δn 2 in the range 6-45 Pa·s with a clearing point of >60° C. and a Δ∈ of ≦−2.3, and comprises a compound of formula B-4 in which alkyl and alkyl* each, independently of one another, denote a…
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- C09K19/12Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8968840B2 cover?
- The present invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (Δ∈), which is distinguished by the fact that it has a value for the ratio γ 1 /Δn 2 in the range 6-45 with a clearing point of >60° C. and a Δ∈ of ≦−2.3. Media of this type are particularly suitable for electro-optical displays having active-matrix addressin…
- Who is the assignee on this patent?
- Klasen-Memmer Melanie, Schoen Sabine, Merck Patent Gmbh
- What technology area does this patent fall under?
- Primary CPC classification C09K19/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).