| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d80f1040809503e54509c871ba828f75 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L2924-40402
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-40 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-32134
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-67075
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S3-0007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-423
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-31111
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-67057
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-425
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-0041
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-30604 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03F7-004
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L21-67
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03F7-42 |
| filingDate |
2019-08-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2020-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_07b6dfa4a88782b1cc54da85563c22f7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9365fc730b17bc693c3a48b3df7c2fc5 |
| publicationDate |
2020-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-10867815-B2 |
| titleOfInvention |
Photonically tuned etchant reactivity for wet etching |
| abstract |
A method and a system for etching of semiconductor substrates, and particularly, wet etching of wafers. The etch rate of liquid solutions applied on the wafer is adjusted by irradiating the liquid solutions with spatially varied light intensity. Photo-reactive agents are added to the liquid solutions, the agents including photo acids, photo bases and photo-oxidizers. Illumination of the photo-reactive agents causes increase/decrease of the pH value and oxidation potential value of the liquid solutions. |
| priorityDate |
2018-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |