http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1599562-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_57a0aa37d657c8db5e155c6f54d2c1c7 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2323-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2323-00 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-13 |
| filingDate | 2004-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2007-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_acb3ae039dfc6a5c6d9dac26f16d88f9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4329e63b9f89b7abf36f6f345dfe5969 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9704491f48b67079e2c00d8b6240b83e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2bfdcc0d53dfcdf027e00b5414d68d93 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_99df900da640c8670343b137eaee5e28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3bc46a21b0059a0bfec29e5caba9c789 |
| publicationDate | 2007-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1599562-B1 |
| titleOfInvention | Nematic liquid crystal mixtures for bistable display devices |
| abstract | Mixtures of nematic crystals for bistable displays with a low energy of anchorage. Nematic liquid crystal mixtures for bistable displays comprises: (a) at least 40 % wt. of compounds of high molecular polarisability(delta e greater than 10) and high dipole moment(psi greater than 1 D) but with a low zenithal anchorage of formulae (AI) - (AIV); (b) 0 - 60 % of compounds of low anchorage of formulae (BI), (BII), (EI), (EII), (FI) and (FII); (c) 0 - 25 % of compounds comprising dipoles, from compounds of formulae (CI) and (CII); (d) 0 - 10 % of a compound of formula (D); (a) [Image] R 1-CN, -NCS, -F or -CF 3; R 2R- or RCOO- (R is 1 - 12C alkyl); R 3R- or RCOO- (R = 1 - 12C alkyl or cycloaliphatic); Z 1, Z 2(identical or different) : -CC-, -CH 2CH 2-, -COO- -OOOC- or single bonds; X 1, X 2(identical or different) : F, Cl or H. [Image] R 4, R 5(identical or different) : R- or RCOO- (R is 1 - 12C alkyl or alkoxy, or 3 - 8C cycloaliphatic ); Z 1, Z 2(identical or different) : -CC-, -CH 2CH 2-, -COO-, -OOC- or sinlge bonds; X 1, X 2F, Cl or H; X 3, X 4H or Hal, or R- or RO- (R is 1 - 12C alkyl). [Image] [Image] R 1-CN, -NCS, -F or -CF 3; R 2R- or RCOO-(R = 1 - 12C). Z 1, Z 2(identical or different) : -CC-, -CH 2CH 2-. -COO-, -OOC- or single bonds; X-1, X 2(identical or different) : F, Cl or H. The mixtures have the following physical characteristics :- Nematic transition temperature-liquid isotrope (TN-1) greater or equal to +50 [deg] C ; Nematic level delta TN greater or equal to 50 [deg] C ; Positive dielectric anisotropy greater or equal to 8(20 [deg] C) ; Low zenithal anchorage on at least one of the plates of the bistable display(characterized by a breakdown voltage, Ulambda /2 less than 25 volts, for a cell of thickness d such that ddelta n = 295 nm). Independent claims are also included for the bistable display apparatus comprising the liquid crystal mixture and use. |
| priorityDate | 2003-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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