http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2239288-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_39bd493c5f56f71dc8ac21f90fdeeb35 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5a6902fb8e819acf86ce9313586df9f4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J9-227 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-672 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-7708 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-693 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-682 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-7702 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-69 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-67 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-77 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J9-227 |
| filingDate | 1997-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df7d4e0fd9bfd363a544f5cbc390ac98 |
| publicationDate | 1998-03-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2239288-A1 |
| titleOfInvention | Oxide based phosphors and processes therefor |
| abstract | Phosphor compositions are prepared by treating metal oxides or mixed-metal oxides with refractory metals to form cathodoluminescent phosphors stimulatable by electrons of very low energy. The phosphors comprise 90 % to 100 % of a mixed metal oxide MxTyOz (where M is a metal selected from Zn, Sn, In, Cu, and combinations thereof; T is a refractory metal selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, and combinations thereof; and O is Oxygen, x, y, and z being chosen such that z is at most stoichiometric for MxTyOz) and 0 % to 10 % of a dopant comprising a substance selected from a rare earth element of the lanthanide series, Mn, Cr, and combinations thereof, or stoichiometrically excess Zn, Cu, Sn, or In. A blue-light-emitting phosphor based on ZnO treated with Ta2O5 or Ta to form Ta2Zn3O8 is characterized by CIE 1931 chromaticity values x and y, where x is between about 0.14 and 0.20 and y is between about 0.05 and 0.15. In preferred embodiments, a process is specially adapted for forming the phosphor in an electrically-conductive thinfilm or surface-layer form in situ during fabrication of displays. A preferred in situ process has an integrated etch stop, which precisely defines the depth of an opening in a field-emission display structure utilizing the low-energy-electron excited phosphor. A field-emission display comprises cells, each having a field-emission cathode and an anode comprising at least one cathodoluminescent phosphor. Arrangements of various color phosphors may be made by selective deposition of suitable dopants. The display cell structures may also have gate elements for controlling electron current flowing to the anode and its phosphor when suitable voltages are applied. |
| priorityDate | 1996-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 91.