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US 9,820,388 B2Granted
Printed circuit board and method for manufacturing same
AssigneesAvary Holding (Shenzhen) Co., Limited., Garuda Technology Co., Ltd.
InventorsMing-Jaan Ho, Xian-Qin Hu, Zhi-Tian Wang
Life of this patent
Estimating the term…
Abstract
A PCB includes a base layer, a wiring pattern formed on a surface of the base layer, and a protecting layer formed on the wiring pattern. The protecting layer is formed by printing and solidifying an ink on the wiring pattern. The ink includes a cycloaliphatic epoxy resin, a phenoxyl resin solution, a solvent, a hardener, and an antifoaming agent.
Claims18
A PCB comprising:
- a base layer;
- a wiring pattern formed on a surface of the base layer;
- and
- a protecting layer formed on the wiring pattern by printing and solidifying an ink on the wiring pattern, the ink comprising a cycloaliphatic epoxy resin, a phenoxyl resin solution, a solvent, a hardener, and an antifoaming agent, a mass percent of the cycloaliphatic epoxy resin being in a range of 28%-34%, a mass percent of the phenoxyl resin solution being in a range of 10%-20%, a mass percent of the solvent being in a range of 20%-39%, a mass percent of the hardener being in a range of 22%-26%, and a mass percent of the antifoaming agent being in a range of 0.5%-1%.
1 more element
A method for manufacturing a PCB, comprising steps:
- providing a substrate, the substrate comprising a base layer and a conductive layer;
- selectively removing a portion of the conductive layer to form a wiring pattern;
- and
- printing an ink on the wiring pattern, the ink comprising a cycloaliphatic epoxy resin, a phenoxyl resin solution, a solvent, a hardener, and an antifoaming agent;
- solidifying the ink to form a protecting layer on the wiring pattern, a mass percent of the cycloaliphatic epoxy resin being in a range of 28%-34%, a mass percent of the phenoxyl resin solution being in a range of 10%-20%, a mass percent of the solvent being in a range of 20%-39%, a mass percent of the hardener being in a range of 22%-26%, and a mass percent of the antifoaming agent being in a range of 0.5%-1%.
2 more elements
Dependencies are inferred from the claim text.