A method for curing a layer of liquid coating applied to surfaces of a printed circuit board is disclosed. The method comprises exposing the layer of liquid coating to a curing agent; and manipulating the printed circuit board during the exposure so as to prevent the liquid coating from flowing from its applied location in response to gravitational forces. An apparatus for implementing the above method is also disclosed. The apparatus comprises a motorized assembly for rotating the printed circuit board. The apparatus also comprises a controller that controls the motorized assembly to rotate the printed circuit board about one or more horizontal axes extending through a plane that includes the printed circuit board while a liquid coating applied to surfaces thereof is being cured.
A circuit board includes a first circuit board section which is configured to support a set of light emitting diodes, a second circuit board section which is configured to support high-speed electronic circuitry, and a boundary section which defines an EMI boundary between the first circuit board section and the second circuit board section. The boundary section includes a set of outer surface elongated ground strips configured to form an EMI seal onto which a set of EMI shields is capable of mounting. In some arrangements, the set of outer surface elongated ground strips take the form of metallic bands (e.g., layers of copper). Such bands can be integrated into the circuit board itself (e.g., during PCB fabrication), or added onto one or more of the circuit board surfaces (e.g., after PCB fabrication).
