C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 19/44 (2006.01) C09K 19/12 (2006.01) C09K 19/30 (2006.01) C09K 19/42 (2006.01) C09K 19/54 (2006.01) G02F 1/13 (2006.01)
Patent
CA 2042603
- 204 - Abstract The invention relates to an electrooptical liquid crystal system - which contains a dielectrically positive liquid crystal mixture and a further optically transparent medium between 2 electrodes which are optionally applied to substrate sheets, - whose liquid crystal molecules in the switched-off state have an irregular orientation, - in which one of the refractive indices of the liquid crystal mixture essentially agrees with the refrac- tive index of the matrix nM and/or in which the quotient of the mass of the liquid crystal mixture and of the mass of the optically transparent medium is 1.5 or more and, - which, independently of the polarization of the incident light, has a reduced transmission in one of the two switch states compared to the other state and - whose liquid crystal mixture contains one or more compounds of the formula I Image I in which Q1 is Image Image and Image are independently of one another trans-1,4-cyclohexylene, 1,4- phenylene, 2-fluoro-1,4-phenylene, 3- fluoro-1,4-phenylene and one of A1 and, if present, A2, is also pyridine-2,5- diyl, pyrimidine-2,5-diyl, 1,3- dioxane-2,5-diyl, tetrahydropyran-2,5- diyl or naphthalene-2,6-diyl, Z1 and Z2 are independently of one another a single bond, -CH2CH2-, -COO-, -OCO-, -C=C-, -CH2O- or any desired combinations of these bridge groups, -205- Y and X are independently of one another H or F, and one of X and Y is also Cl, W is -CN, -Cl, -F, -CF3, -OCF3, -OCHF2, -NCS or R2 R1 and R2 independently of one another are alkyl having 1-12 C atoms, in which one or 2 non-adjacent CH2 groups can also be replaced by -O- or -HC=CH-, and m is 0, 1 or 2.
Coates David
Finkenzeller Ulrich
Hittich Reinhard
Marden Shirley
Reiffenrath Volker
Coates David
Fetherstonhaugh & Co.
Finkenzeller Ulrich
Hittich Reinhard
Marden Shirley
LandOfFree
Electrooptical liquid crystal system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrooptical liquid crystal system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrooptical liquid crystal system will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2013638