公开(公告)号：US20220385288A1

公开(公告)日：2022-12-01

申请号：US17812785

申请日：2022-07-15

Applicant: Darfon Electronics Corp.

Inventor： Chen YANG ,  Yu-Chun HSIEH ,  Li-Te CHANG ,  Po-Yueh CHOU

IPC: H03K17/968 ,  H01H13/705 ,  H01H13/14

Abstract: An optical keyswitch includes a keycap, a support mechanism, and a switch module. The support mechanism is disposed below the keycap and configured to support the keycap moving upward and downward, the support mechanism comprising a first frame and a second frame, the first frame having a sliding end. The switch module includes a circuit board, an emitter, and a receiver, the emitter and the receiver are electrically connected to the circuit board, and the emitter emitting an optical signal to the receiver. When the keycap is pressed, the first frame is driven by the keycap to slide substantially parallel to the circuit board and block the optical signal with the sliding end, so the switch module is triggered to generate a triggering signal.

公开(公告)号：US20220351920A1

公开(公告)日：2022-11-03

申请号：US17731288

申请日：2022-04-28

Applicant: Darfon Electronics Corp.

Inventor： Da-Shan HSU ,  Shao-Lun HSIAO ,  Chen YANG ,  Yu-Chun HSIEH

IPC: H01H3/12 ,  H03K17/97

Abstract: A magnetic type keyswitch includes an actuating member and a switch unit. The actuating member is movable in response to a pressing force. The switch unit includes a circuit board, a Hall sensor electrically connected to the circuit board, and a magnet spaced apart from the Hall sensor by a fixed distance. When the pressing force is not applied, the magnet enables the Hall sensor to output a first voltage, and when the pressing force is applied, the actuating member moves relative to the magnet and the Hall sensor in response to the pressing force, so that the Hall sensor outputs a second voltage different from the first voltage, and the magnetic type keyswitch generates a triggering signal.

公开(公告)号：US20210249203A1

公开(公告)日：2021-08-12

申请号：US17167202

申请日：2021-02-04

Applicant: Darfon Electronics Corp.

Inventor： Chen YANG ,  Chia-Hung LIU ,  Yu-Chun HSIEH

IPC: H01H13/20 ,  H01H13/04 ,  H01H13/14 ,  H01H13/70

Abstract: A keyswitch structure includes a base, a cap disposed corresponding to the base, a restoring member disposed between the base and the cap, and a tactile adjustment unit. The cap has a cam portion movable relative to the base. The restoring member is configured to provide a restoring force to enable the cam portion to move away from the base. The tactile adjustment unit is disposed corresponding to the cam portion and includes a holder and a tactile feedback member mounted on the holder. The holder is movable relative to the base to change a position of the tactile feedback member relative to the cam portion, so as to change a pressing force required for the cam portion to move toward the base.