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To be more specific, what is the exact nature of a trace on a circuit board?

I know it's the conductive connection between different points on a circuit board, but what is its form, how is it made?

My confusion stems partly from this image of a PCB cross-section, which I encountered when I started reading about how PCBs are manufactured:

enter image description here

This image suggests that there's a continuous layer, a sheet of copper on a circuit board that spans the whole surface. If that's true, how is a trace formed? What breaks that sheet of copper into separate wire-like lines that are isolated from one another?

To be more specific, what is the exact nature of a trace on a circuit board?

I know it's the conductive connection between different points on a circuit board, but what is its form, how is it made?

My confusion stems partly from this image of a PCB cross-section, which I encountered when I started reading about how PCBs are manufactured:

enter image description here

This image suggests that there's a continuous layer, a sheet of copper on a circuit board that spans the whole surface. If that's true, how is a trace formed? What breaks that sheet of copper into separate wire-like lines that are isolated from one another?

I know it's the conductive connection between different points on a circuit board, but what is its form, how is it made?

My confusion stems partly from this image of a PCB cross-section, which I encountered when I started reading about how PCBs are manufactured:

enter image description here

This image suggests that there's a continuous layer, a sheet of copper on a circuit board that spans the whole surface. If that's true, how is a trace formed? What breaks that sheet of copper into separate wire-like lines that are isolated from one another?

Source Link
temporary_user_name
temporary_user_name
  • 323
  • 2
  • 6
  • 14

How is a trace formed?

To be more specific, what is the exact nature of a trace on a circuit board?

I know it's the conductive connection between different points on a circuit board, but what is its form, how is it made?

My confusion stems partly from this image of a PCB cross-section, which I encountered when I started reading about how PCBs are manufactured:

enter image description here

This image suggests that there's a continuous layer, a sheet of copper on a circuit board that spans the whole surface. If that's true, how is a trace formed? What breaks that sheet of copper into separate wire-like lines that are isolated from one another?