GB1495307A - Etching processes - Google Patents
Etching processesInfo
- Publication number
- GB1495307A GB1495307A GB4069475A GB4069475A GB1495307A GB 1495307 A GB1495307 A GB 1495307A GB 4069475 A GB4069475 A GB 4069475A GB 4069475 A GB4069475 A GB 4069475A GB 1495307 A GB1495307 A GB 1495307A
- Authority
- GB
- United Kingdom
- Prior art keywords
- added
- acid
- metal oxide
- etchant
- etching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/20—Acidic compositions for etching aluminium or alloys thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Surface Treatment Of Glass (AREA)
- Manufacturing Of Printed Circuit Boards (AREA)
Abstract
1495307 Etching process MARCONI CO Ltd 30 July 1976 [4 Oct 1975] 40694/75 Heading B6J An aluminium, cadmium or zinc layer, provided as an overlay upon a substrate (such as glass) bearing a conductive pattern of metal oxide (such as tin or indium oxides), is etched with an acid etchant to which an oxidizing agent has been added to suppress the etchant effect upon said metal oxide of nascent hydrogen released during the etching of the metal. Preferably solutions of sulphuric acid are used to which chromic acid, potassium permanganate or ceric sulphate have been added.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4069475A GB1495307A (en) | 1976-07-30 | 1976-07-30 | Etching processes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4069475A GB1495307A (en) | 1976-07-30 | 1976-07-30 | Etching processes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1495307A true GB1495307A (en) | 1977-12-14 |
Family
ID=10416157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4069475A Expired GB1495307A (en) | 1976-07-30 | 1976-07-30 | Etching processes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1495307A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113755840A (en) * | 2021-08-16 | 2021-12-07 | 合肥本源量子计算科技有限责任公司 | Etching liquid and etching method |
-
1976
- 1976-07-30 GB GB4069475A patent/GB1495307A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113755840A (en) * | 2021-08-16 | 2021-12-07 | 合肥本源量子计算科技有限责任公司 | Etching liquid and etching method |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |