http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4027830-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_eccd894c99fea2d1c0c8735872bb2309 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-0208 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-46 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-46 |
| filingDate | 1990-09-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_358e659b1ceea54c8a90aaeed98f26a8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_da3362c03c8eca291f440eef5d83bb3b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_da98f1dbd4e4c3974ccb035eec9e1c6d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_616e22797c31feda9318b9ad68b20f04 |
| publicationDate | 1992-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4027830-A1 |
| titleOfInvention | LIQUID CRYSTAL DISPLAY |
| abstract | LCD based on a twisted nematic cell has a 3-10 micron thick film of liq. crystal (LC) medium with optical anisotropy less than 0.13. The medium consists of a component A of cpd(s). with a dielectric anisotropy of over +25; a component B of cpd(s). with an optical anisotropy less than 0.07; and a component C of cpd(s). with a clear point of over 200 deg.C. The novelty is that component A contains 4-cyano-3-fluorophenyl benzoate(s) (I), component B contains biscyclohexyl, 1,2-bis(cyclohexyl)ethane, cyclohexenyl-cyclohexane or 1-cyclohexenyl-2-cyclohexylethane cpd(s). (II); and component C contains bis(4-(cyclohexyl)cyclohexyl), bis(4-(cyclohexylethyl)-cyclohexyl), bis-(4-(cyclohexyl)phenyl) or bis(4-(cyclohexylethyl)phenyl) cpd(s). (III) of the formulae (I)-(III) where ring A = Cyc, Cyc-CH2CH2- or Phe (Cyc = trans-1,4-cyclohexylene; Phe = 1,4-phenylene); ring B = Cyc or Phe; ring C = as ring B or fluoro-1,4-phenylene; Q1 and Q2 = Cyc or one of these = 1,4-cyclohexenylene; Q3 and Q4 = Cyc or Cyc-CH2CH2; R1 = 1-8C alk(en)yl, alkoxy or oxaalkyl; R2-5 = as R1 or 2-8C alkenyloxy or one of R2-3 = -OOC-Cyc-alkyl or -COO-Cyc-alkyl; Z = CH2CH2, -CO-O-, -O-CO- or a single bond; m and n = 0 or 1. (I), (II) and (III) can be prepd. (not claimed) by standard methods. USE/ADVANTAGE - The media are suitable for TN and STN displays. They have low optical anisotropy and low threshold voltage and are superior to other media in terms of their clear point, double refraction, low temp. viscosity, thermal and UV stability and dielectric anisotropy. |
| priorityDate | 1990-09-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.