Method and system for manufacturing electrical interface comprising array of thin pins

An electrical interface, comprising:

• a substrate having a lower surface and an edge surrounds the lower surface;
• and
• an array of thin pins positioned on the lower surface of the substrate, wherein each thin pins comprises a conductive material and is tapered at its lower end that is away from the lower surface of the substrate,
• wherein the array of thin pins comprises:
• a first thin pin positioned around a center of the lower surface and having a first conical angle at its lower end,
• a second thin pin positioned adjacent to edge of the substrate and having a second conical angle at its lower end, the second conical angle is smaller than the first conical angle.

A processing method, comprising:

• moving an array of thin pins into an electrolytic fluid received in an electrolyte tank;
• producing measurement data which is related to positions of thin pins in the electrolytic fluid;
• and
• when the measurement data meets a preset standard, applying electrical currents to the array of thin pins and an electrode plate positioned in the electrolyte tank so as to change the shape of each of the thin pins through an electrochemical machining process.