Molded contrast mask for display module

A method comprising:

• providing or receiving a circuit board comprising a front surface and a plurality of contact pads on the front surface, wherein each of the plurality of contact pad is electrically connected to one or more conducting traces on the front surface;
• directly molding a polymeric material onto at least a portion of the conducting traces or the contact pads, or both, and a portion of the front surface of the circuit board;
• wherein the direct molding of the polymeric material forms a contrast mask that covers at least the portion of the conducting traces or the contact pads, or both, and the portion of the front surface;
• mounting a plurality of light-emitting elements onto the front surface of the circuit board in an array configured to produce at least a portion of a display image at the front surface of the circuit board;
• and
• electrically connecting the plurality of the light-emitting elements to the plurality of the contact pads so that the plurality of light-emitting elements are electrically connected to the conducting traces;
• wherein the direct molding of the polymeric material comprises forming a plurality of windows in or through the contrast mask to allow for emission of light from the light-emitting elements to produce a display image at the front surface of the circuit board, wherein each window surrounds a group of one or more of the plurality of light-emitting elements.