Abstract: A lighting board for supporting at least one keycap is provided. The lighting board includes a substrate having an insulation surface, a plurality of openings penetrating through the substrate, and a plurality of coupling members disposed on the substrate and configured to directly or indirectly connect the at least one keycap, a lighting circuit disposed on the insulation surface at a side opposite to the coupling members, an illuminant electrically connected to the lighting circuit, and a protective layer disposed on the insulation surface and covering the lighting circuit.

Abstract: A backlit circuit board for supporting a keycap is provided. The backlit circuit board includes a substrate having a plurality of ribs configured to define a plurality of openings penetrating through the substrate and a plurality of coupling members disposed on the substrate and configured to directly or indirectly connect the keycap, a lighting circuit disposed on the substrate at a same side as the coupling members and extending over the plurality of ribs, and an illuminant electrically connected to the lighting circuit and disposed on one of the plurality of ribs, wherein the illuminant vertically corresponds to a light impermeable region of the keycap, and a vertical projection of the light impermeable region at least partially overlaps the plurality of ribs.

Abstract: An electrical connector assembly includes: a male connector, provided with a conductive shell; a first substrate, accommodated in the conductive shell and used to transmit receiving signals; a second substrate, accommodated in the conductive shell and used to transmit sending signals; a shielding sheet, located between the first substrate and the second substrate; a female connector, provided with a first conductive body and a second conductive body; a plurality of first signal terminals, accommodated in the first conductive body and used to transmit receiving signals; and a plurality of second signal terminals, accommodated in the second conductive body and used to transmit sending signals. The first signal terminals and the first substrate are electrically contacted to each other. The second signal terminals and the second substrate are electrically contacted to each other. The first conductive body and/or the second conductive body are used to lap joint with the shielding sheet.