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公开(公告)号：US11855624B2
公开(公告)日：2023-12-26
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: H01H13/14 , H03K17/968 , H01H13/705
CPC classification number: H03K17/968 , H01H13/14 , H01H13/705 , H03K2217/9653
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.
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公开(公告)号：US11770123B2
公开(公告)日：2023-09-26
申请号：US17383678
申请日：2021-07-23
Applicant: Darfon Electronics Corp.
Inventor： Chen Yang , Yu-Chun Hsieh , Li-Te Chang , Po-Yueh Chou
IPC: H01H3/12 , H03K17/968 , H01H13/705 , H01H13/14
CPC classification number: H03K17/968 , H01H13/14 , H01H13/705 , H03K2217/9653
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.
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公开(公告)号：US11108393B2
公开(公告)日：2021-08-31
申请号：US16240096
申请日：2019-01-04
Applicant: Darfon Electronics Corp.
Inventor： Chen Yang , Yu-Chun Hsieh , Yung-Chih Wang , Chia-Hung Liu , Ching-Yu Wang , Li-Te Chang
IPC: H03K17/969 , H03K17/968
Abstract: An optical keyswitch includes a keycap, a supporting mechanism having a protrusion disposed under the keycap to support the keycap to move downward or upward, and a switch module including a circuit board, an emitter, and a receiver. The emitter and the receiver are electrically connected to the circuit board. The emitter emits an optical signal to the receiver. When the keycap is not pressed, the receiver receives the optical signal of a first intensity. When the keycap is pressed, the protrusion moves along with the keycap, and the protrusion changes the optical signal received by the receiver to have a second intensity different from the first intensity, so the switch module is triggered to generate a triggering signal.
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Patent Agency Ranking
公开(公告)号：US12160235B2
公开(公告)日：2024-12-03
申请号：US18350787
申请日：2023-07-12
Applicant: Darfon Electronics Corp.
Inventor： Chen Yang , Yu-Chun Hsieh , Li-Te Chang , Po-Yueh Chou
IPC: H03K17/968 , H01H13/14 , H01H13/705
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.
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公开(公告)号：US11721500B2
公开(公告)日：2023-08-08
申请号：US17715120
申请日：2022-04-07
Applicant: Darfon Electronics Corp.
Inventor： Li-Te Chang , Chih-Hung Chen , Yen-Ting Chen
Abstract: A keyswitch assembly includes a switch module, a support mechanism, and a blocking mechanism. The switch module includes a substrate, a signal generator, and a signal sensor. The signal generator provides a sensing signal. The signal sensor receives the sensing signal to obtain a sensing intensity. The support mechanism is disposed on the substrate. A top portion of the support mechanism moves in response to a pressing force. The blocking mechanism includes a pivoting portion rotatably disposed on the substrate, a connecting piece extending from the pivoting portion and movably connected to the support mechanism to be driven by the top portion to swivel relative to the substrate, and a blocking piece extending from the pivoting portion and driven by the connecting piece to be inserted into or escape from the gap between the signal generator and the signal sensor to change the magnitude of the sensing intensity.
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公开(公告)号：US10475598B2
公开(公告)日：2019-11-12
申请号：US16234594
申请日：2018-12-28
Applicant: DARFON ELECTRONICS CORP.
Inventor： Li-Te Chang , Chih-Chung Yen
IPC: H01H3/12 , H01H13/12 , H01H13/7065
Abstract: A keyswitch structure includes a keycap, a base plate, a first support, and a second support. The first support and the second support are pivotally connected with each other and are connected to and between the keycap and the base plate. The first support includes a shaft socket, a shaft portion, and a protruding interference portion which are adjacently arranged. Correspondingly, the second support includes a shaft portion, a shaft socket, and a recess interference portion which are adjacently arranged. The recess interference portion has a relief space and a block beside the relief space. The first support and the second support are pivotally connected by engaging the shaft sockets with the corresponding shaft portions; therein, the protruding interference portion is located in the relief space, and the block obstructs the protruding interference portion moving out of the relief space.
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公开(公告)号：US11735379B2
公开(公告)日：2023-08-22
申请号：US17715143
申请日：2022-04-07
Applicant: Darfon Electronics Corp.
Inventor： Li-Te Chang , Chih-Hung Chen , Yen-Ting Chen
Abstract: A keyswitch assembly includes a switch module, a support mechanism, a blocking mechanism, an enhancing light source, and a backlight source. The switch module includes a substrate, a signal generator, and a signal sensor. The signal generator generates a sensing signal. The signal sensor receives the sensing signal to obtain a sensing strength. The support mechanism is disposed on the substrate. The blocking mechanism is disposed on the substrate and has a light-permeable portion. A portion of the blocking mechanism inserts into or escapes from a gap between the signal generator and the signal sensor. The backlight source is disposed on the substrate and located outside the vertical projection of the blocking mechanism on the substrate. The enhancing light source is disposed on the substrate and located within the vertical projection of the blocking mechanism on the substrate and corresponds to the light-permeable portion.
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公开(公告)号：US20190206634A1
公开(公告)日：2019-07-04
申请号：US16234594
申请日：2018-12-28
Applicant: DARFON ELECTRONICS CORP.
Inventor： Li-Te Chang , Chih-Chung Yen
IPC: H01H3/12 , H01H13/7065 , H01H13/12
Abstract: A keyswitch structure includes a keycap, a base plate, a first support, and a second support. The first support and the second support are pivotally connected with each other and are connected to and between the keycap and the base plate. The first support includes a shaft socket, a shaft portion, and a protruding interference portion which are adjacently arranged. Correspondingly, the second support includes a shaft portion, a shaft socket, and a recess interference portion which are adjacently arranged. The recess interference portion has a relief space and a block beside the relief space. The first support and the second support are pivotally connected by engaging the shaft sockets with the corresponding shaft portions; therein, the protruding interference portion is located in the relief space, and the block obstructs the protruding interference portion moving out of the relief space.
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