Method for etching anode of printed circuit board
A printed circuit board, anode etching technology, applied in the direction of removing conductive materials by chemical/electrolytic methods, can solve the problems of easy side etching, uneven etching lines, large etching coefficient, etc., and achieve uniform etching lines and etching speed. Fast, high-quality etching results
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0013] (1) Micro-etching, cleaning and drying the surface of the workpiece
[0014] 2% H for microetching 2 SO 4 Aqueous solution, micro-etching for 2 minutes to reveal metallic luster, stop micro-etching, and send to the next process. Wash with flowing desalinated water for 2 minutes. Dry with electric hot air and send to the next process.
[0015] (2) Make an anti-corrosion shielding pattern on the surface of the workpiece
[0016] Use photosensitive resist ink or dry film to make an anti-corrosion shielding pattern on the surface of the workpiece.
[0017] (3) Etching with etching solution
[0018] (a) Preparation of etching solution: graphite: 2g / L, filtered with 6 μm filter material; H 2 SO 4 : 120ml / L, H 2 o 2 : 320ml / L, the etching solution is ready-to-use.
[0019] (b) Inject the etching solution into the electrolytic cell, connect the PCB with the positive electrode of the pulse power supply with a stainless steel fixture and place it in the etching solution...
Embodiment 2
[0024] (1) Micro-etching, cleaning and drying the surface of the workpiece
[0025] 1% H for microetching 2 SO 4 Aqueous solution, micro-etching for 3 minutes to reveal metallic luster, stop micro-etching, and send to the next process. Wash with running desalinated water for 1 minute. Dry with electric hot air and send to the next process.
[0026] (2) Make an anti-corrosion shielding pattern on the surface of the workpiece
[0027] Use photosensitive resist ink or dry film to make an anti-corrosion shielding pattern on the surface of the workpiece.
[0028] (3) Etching with etching solution
[0029] (a) Preparation of etching solution: FeCl 3 500g / L, HCl<5%, the specific gravity of the liquid is 39°Be; the management temperature is 50°C; the etching solution is prepared immediately after use.
[0030] (b) Inject the etching solution into the electrolytic cell, connect the PCB with the positive electrode of the pulse power supply with a stainless steel fixture and place...
Embodiment 3
[0035] (1) Micro-etching, cleaning and drying the surface of the workpiece
[0036] 3% H for microetching 2 SO 4 Aqueous solution, micro-etching for 1 minute, revealing metallic luster, stop micro-etching, and send to the next process. Wash with running desalinated water for 1 minute. Dry with electric hot air and send to the next process.
[0037] (2) Make an anti-corrosion shielding pattern on the surface of the workpiece
[0038] Use photosensitive resist ink or dry film to make an anti-corrosion shielding pattern on the surface of the workpiece.
[0039] (3) Etching with etching solution
[0040] (a) Preparation of etching solution: CuCl 2 500g / L, HCl<5%, the specific gravity of the liquid is 39°Be; the management temperature is 50°C; the etching solution is prepared immediately after use.
[0041] (b) Inject the etching solution into the electrolytic cell, connect the PCB with the positive electrode of the pulse power supply with a stainless steel fixture and place...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com