公开(公告)号：US20250095930A1

公开(公告)日：2025-03-20

申请号：US18884489

申请日：2024-09-13

Applicant: Darfon Electronics Corp.

Inventor： Yi-Jui PAN

IPC: H01H13/83 ,  H01H13/02 ,  H01H13/10 ,  H01H13/81

Abstract: A backlit circuit board for supporting a keycap is provided. The backlit circuit board includes a substrate having 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 switch circuit disposed on the substrate and having switch pads for triggering a keyswitch signal in response to the keycap moving toward the substrate, a lighting circuit disposed on the substrate at a side opposite to the coupling members, and an illuminant electrically connected to the lighting circuit, wherein vertical projections of the switch pads and the illuminant fall within a range surrounded by the plurality of coupling members.

公开(公告)号：US20250093570A1

公开(公告)日：2025-03-20

申请号：US18890846

申请日：2024-09-20

Applicant: Darfon Electronics Corp.

Inventor： Yi-Jui PAN ,  Po-Yueh CHOU

IPC: F21V8/00 ,  H01H13/02 ,  H01H13/702

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.

公开(公告)号：US20250093569A1

公开(公告)日：2025-03-20

申请号：US18884569

申请日：2024-09-13

Applicant: Darfon Electronics Corp.

Inventor： Yi-Jui PAN ,  Po-Yueh CHOU

IPC: F21V8/00 ,  H01H13/02

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.