Abstract:
A copper-silver dual-component metal electroplating solution includes copper methanesulfonate, silver methanesulfonate, methanesulfonic acid, chlorine ions, and water. An electroplating method for forming a copper-silver dual-component metal by using such an electroplating solution, the steps of which includes (a) contacting the copper-silver dual-component metal electroplating solution with a substrate; (b) applying an operating voltage, the current density of which is controlled to be between 0.1 and 2 ASD in order to carry out electroplating on the substrate. Therefore, the electroplating solution has environmental characteristics, such as less poisoning hazards, through the design of methanesulfonic acid and methanesulfonate electroplating solution. Also, the potential and the current are adjusted during the electroplating in order to obtain a copper-silver dual-component metal plating layer with a specific silver content.
Abstract:
A manufacturing method of nonplanar 3D antenna shaping includes providing a nonplanar insulating substrate; performing coarsening and modification on the surface of the substrate, followed by rendering the substrate surface hydrophilic in a plasma process to form a modified substrate; performing copper electroless plating on the modified substrate to plate a copper layer on the substrate, so as to achieve a required thickness. The width of the metal wiring is efficiently reduced to microscale by 3D photolithography; therefore, the range of its low-frequency application is reduced to less than 2 GHz. The method involves controlling substrate surface coarseness uniformity, modifying the substrate surface hydrophilic, and applying a precise plating technique with a view to enhancing the quality of copper wire coating. The method not only enhances antenna low-frequency performance but is also conducive to miniaturization of antennas, thereby allowing a tool carrying an antenna to reduce weight and power consumption.
Abstract:
A method of manufacturing a nickel-based alloy barrier layer of a wiring connection terminal includes providing a substrate having a metal wiring; electroplating a nickel or a nickel-based alloy to the metal wiring at a deposition rate of 15-30 μm/hr to form a first layer thereon, wherein the first layer is of a thickness of 0.5 μm-5 μm, and the nickel-based alloy layer has nickel content of at least 50%; and plating a gold layer to the first layer to form thereon a second layer of a thickness of 0.03 μm-0.3 μm. The surface of the nickel-based alloy electroplated layer features a crystalline-phase structure full of micro-protuberances, and the thickness of the gold plated layer is reduced to 0.03 μm.
Abstract:
A manufacturing method of antenna shaping includes providing a nonplanar insulating substrate; coarsening and modifying a surface of the substrate and rendering the substrate surface hydrophilic by a plasma process to form a modified substrate; performing copper electroless plating on the modified substrate; electroplating a copper layer to attain a required thickness; defining antenna wiring width and clearance by multi-axis mechanical processing; and performing antenna metal wiring shaping with a copper etching plating solution. Furthermore, metal wiring shaping and processing is performed with a mechanical cutting tool of a multi-axis processing machine without using any photomask, so as to control substrate surface coarsening uniformity and enhance hydrophilicity of the surface of the modified substrate, with a precise plating technique for enhancing the quality of copper wire coating, cutting costs, and speeding up the processing process.