摘要:
The invention relates to novel dioxane derivatives of the formula I R1—(A1—Z1)m—A2—C2F4—A3—(Z2—A4)n—R2 I in which R1, R2, A1, A2, A3, A4, Z1, Z2, m and n are as defined herein, to their use as components of liquid-crystalline media, and to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention.
摘要:
A liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I in which R, A, L1, L2 and Y are as defined herein are suitable for use in liquid crystal displays such as MLC, TN or STN displays.
摘要:
Nematic liquid-crystal compositions of negative dielectric anisotropy comprising compounds of the formula I are useful in plasma-addressed liquid-crystal displays.
摘要:
The present invention is related to compounds for use in liquid crystal media, liquid crystal media comprising said compounds, the use of said media in electro-optical devices, said electro-optical devices, and the use of said compounds in mesogenic media for use in electro-optical devices that may be operated in an optically isotropic state.
摘要:
The instant invention relates to mesogenic media comprising one or more compounds which comprise two or more mesogenic groups two of which are linked to the ortho-positions of an aromatic ring, preferably of formula (I) wherein the parameters are as specified in the text, preferably the instant invention relates to mesogenic media showing a blue phase and their use in electro-optical light modulation elements and their respective use in displays, as well as to such devices. The instant invention further relates to compounds of formula (I).
摘要:
The invention relates to an electro-optical light control element and to electro-optical displays and display systems, e.g. television screens and computer monitors, which contain elements of this type. The inventive light control elements contain a mesogenic control medium (2) that exists in an optically isotropic phase when the light control elements are in operation. In addition to having a good contrast, a low dependency on viewing angle and very short switching times, the light control elements are particularly characterized by having relatively low drive voltages. The inventive electro-optical light control elements contain a solid dielectric layer (5) between the electrode structure (3, 4) and the mesogenic control layer. The invention also relates to the mesogenic control media, which are used in the electro-optical light control elements and which can exist in a blue phase.
摘要:
The invention relates to an electro-optic light control element, electro-optic displays containing said elements and display systems such as TV screens and computer monitors. The inventive light control elements contain a mesogenic control medium which is present in the isotropic phase during operation of the light control elements and arc characterized both by good contrast and low angular field dependence and particularly by very short switching, times. The invention also relates to the mesogenic control media used in the electro-optic light control elements.
摘要:
The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I in which Z1, Z2, Z3, a, b and c are as defined in claim 1, and to electro-optical displays containing a liquid-crystalline medium of this type.
摘要:
The present invention relates to dielectrically positive, nematic liquid crystalline media having a small frequency dependence of the dielectric anisotropy. The media are particularly well suited for application in active matrix displays. The present invention relates to the use of the inventive media in active matrix displays, as well as to these active matrix displays themselves.
摘要:
The invention relates to chiral compounds of formula (I) R1—X1-(A1-Z1)m-G-(Z2-A2)n-X2—R2, wherein R1, R2, X1, X2, A1, A2, Z1, Z2, G, m and n have the meaning given in claim 1, to liquid crystalline mixtures comprising at least one chiral compound of formula (I), to chiral linear or crosslinked liquid crystalline polymers obtainable by polymerizing a polymerizable mixture comprising at least one chiral compound of formula (I), to the use of chiral compounds of formula (I) and mixtures and polymers obtained thereof in liquid crystal displays, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula (I).