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公开(公告)号：US11978598B2
公开(公告)日：2024-05-07
申请号：US18071533
申请日：2022-11-29
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chen Yang , Ling-Hsi Chao , Shao-Lun Hsiao , Yu-Chun Hsieh
CPC classification number: H01H13/52 , H01H13/023 , H01H2013/026 , H01H2013/525
Abstract: A keyswitch structure includes a base, a keycap, a lift mechanism and a light-emitting part. The lift mechanism includes a first support, a second support, and a spring structure. The first support and the second support are connected to and between the base and the keycap, so that the keycap can move relative to the base in a vertical direction. The spring structure is a single structural part and is connected to the first support and the second support and drives the first support and the second support to lift the keycap in the vertical direction. The lift mechanism as a whole defines a central space that extends through the whole lift mechanism in the vertical direction. The spring structure does not enter the central space. The light-emitting part is disposed on the base corresponding to the central zone, and emits light to illuminate the keycap.
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公开(公告)号：US20240118480A1
公开(公告)日：2024-04-11
申请号：US18510799
申请日：2023-11-16
Applicant: Darfon Electronics Corp.
Inventor： Chao-Yu Chen
CPC classification number: G02B6/006 , G02B6/0068 , H01H13/023 , H01H13/14
Abstract: A backlight keyswitch includes a board, a backlight module and a keyswitch body having a cap with a symbol formed thereon. The backlight module disposed under the cap includes first and second ink layers, a light guide plate, a light-blocking sheet having a transparent region corresponding to the cap, and a backlight circuit board having first, third, and second lighting units disposed in the light guide plate and arranged sequentially along a longitudinal direction for emitting first, third, and second color lights respectively to be incident to the transparent region after light mixing. The first and second ink layers are formed on the light-blocking sheet and located outside the first and second lighting units. Colors of the first and second ink layers at least correspond to colors of the second and first color lights respectively to achieve a mixed color.
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公开(公告)号：US20240094457A1
公开(公告)日：2024-03-21
申请号：US18368538
申请日：2023-09-14
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chao-Yu Chen
CPC classification number: G02B6/0043 , G02B6/0091 , H01H13/023 , H01H13/14
Abstract: A backlight keyswitch includes a keycap, a support plate, a membrane circuit board and a backlight module. The support plate is disposed under the keycap. The membrane circuit board is disposed in parallel to the keycap and the support plate. The backlight module is disposed under the support plate, which includes a shielding sheet, a light guide panel, a lighting board and a protrusion structure. The shielding sheet includes a light permeable area corresponding to the keycap. The light guide panel is disposed under the shielding sheet. The lighting board is disposed under the light guide panel and includes a light source. The protrusion structure protrudes toward the light source and is formed on one of the support plate, the membrane circuit board and the shielding sheet. The protrusion structure reflects at least partial light of the light source to enter the light guide panel for lateral transmission.
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公开(公告)号：US20240036245A1
公开(公告)日：2024-02-01
申请号：US18223031
申请日：2023-07-18
Applicant: DARFON ELECTRONICS CORP.
Inventor： Po-Wei Tsai , Yen-Chang Chen , Sheng-Yun Yang
IPC: F21V8/00
CPC classification number: G02B6/0073 , G02B6/0055
Abstract: A backlight module is applied to providing light to a plurality of keyswitches of a keyboard. Each keyswitch has a keycap and an elastic member abutting against the keycap. The backlight module includes a membrane circuit board and a light guide plate. The membrane circuit board has a light emitting diode corresponding to the keyswitch. The light emitting diode is located at a side of the elastic member and emits light to the keycap. The light guide plate is disposed on the membrane circuit board. The light guide plate has a slot hole for containing the light emitting diode and has a hole corresponding to the elastic member. An optical microstructure is formed on the light guide plate for guiding light of the light emitting diode to be incident to the keycap. The elastic member passes through the hole to be disposed on the membrane circuit board.
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公开(公告)号：US11881363B2
公开(公告)日：2024-01-23
申请号：US18297020
申请日：2023-04-07
Applicant: DARFON ELECTRONICS CORP.
Inventor： Ying-Lan Liu , Hsin-Cheng Ho , Heng-Yi Huang
IPC: H01H13/83 , F21V8/00 , H01H13/705 , H01H13/02 , H01H3/12
CPC classification number: H01H13/83 , G02B6/0055 , H01H13/023 , H01H13/705 , H01H3/125
Abstract: A backlight module is configured to illuminate at least one key cap. The backlight module includes a light emitting unit, a light guide plate and a lighting board. The light guide plate has a light guide hole for accommodating the light emitting unit. The lighting board has a pair of pads connected to the light emitting unit respectively. The lighting board includes a first reflective layer surrounding the light emitting unit and at least partially covering the pair of pads. Each of the pair of pads has a plurality of branches and at least one hollow area. The at least one hollow area overlaps with at least one part of the light emitting unit.
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Patent Agency Ranking
公开(公告)号：US20240006113A1
公开(公告)日：2024-01-04
申请号：US18205564
申请日：2023-06-04
Applicant: DARFON ELECTRONICS CORP.
Inventor： Zuei-Chown Jou , Chih-Ho Liu , Jui-Wen Kuo , Chi-Ming Huang , Bo-Yu Huang , Yao-Tsung Chen
CPC classification number: H01F27/2828 , H01F27/292 , H01F27/327 , H01F41/10 , H01F41/0246
Abstract: An inductor includes a coil, a conductive lead frame, and a housing. The coil includes a coil body and a lead protruding from the coil body. The lead has a U-bend portion. The lead is electrically fixed onto the conductive lead frame. The housing encapsulates the coil and exposes the conductive lead frame. A method of manufacturing an inductor includes the following steps: providing a coil, providing a conductive lead frame, making a lead of the coil be electrically fixed onto the conductive lead frame, bending the lead to form a U-bend portion and make the main body of the coil close to a portion of the lead that connects with the conductive lead frame, and forming a housing to encapsulate the coil and expose the conductive lead frame.
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公开(公告)号：US20230395320A1
公开(公告)日：2023-12-07
申请号：US18203055
申请日：2023-05-29
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chih-Ho Liu , Jui-Wen Kuo , Chi-Ming Huang , Bo-Yu Huang , Yao-Tsung Chen
Abstract: An integrated-type coupled inductor is applied to a related manufacturing method and includes a lead frame, a first coil, a second coil and a magnetic packing component. The lead frame has a first surface and a second surface opposite to each other and includes four pins. The first coil is disposed on the first surface and coupled to two of the four pins. The second coil is disposed on the second surface and coupled to other pins. The magnetic packing component covers the first coil and the second coil to expose parts of the four pins.
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公开(公告)号：US20230377818A1
公开(公告)日：2023-11-23
申请号：US18353925
申请日：2023-07-18
Applicant: Darfon Electronics Corp.
Inventor： Heng-Yi HUANG , Hsin-Cheng HO
IPC: H01H13/83
CPC classification number: H01H13/83 , H01H2221/0702
Abstract: An illuminated keyswitch structure and an illuminating module thereof are provided. A base plate has an opening. The illuminating module includes a drive circuit board, having a face reflector and at least one dot reflector disposed thereon, a spacer adhered on the drive circuit board and having a through hole and an adhesive-less clearance fringe at least partially surrounding the through hole, a light-emitting part disposed on the drive circuit board and proximate to the face reflector and the dot reflector, and a translucent covering structure covering above the light-emitting part and including a reflective layer. The reflective layer reflects off light from the light-emitting part, and the face reflector and/or the at least one dot reflector reflect light to pass through the through hole of the spacer and then illuminate upward through the translucent covering structure and further through the opening of the base plate.
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公开(公告)号：US20230375773A1
公开(公告)日：2023-11-23
申请号：US18131886
申请日：2023-04-07
Applicant: DARFON ELECTRONICS CORP.
Inventor： Heng-Yi Huang , Hsin-Cheng Ho , Po-Yueh Chou
CPC classification number: G02B6/006 , G02B6/0036 , H01H13/023 , H01H13/83
Abstract: A lighting keyboard includes a backlight module and two rows of keyswitches. The backlight module includes a lighting board and a shielding sheet. The lighting board includes plural illuminants aligned into two rows to correspond to the two rows of keyswitches. The shielding sheet includes plural first outlet windows and plural first block patterns disposed within the first outlet windows respectively and form a first row pattern collectively. Each of the first block patterns respectively corresponds to one of the illuminant. The shielding sheet includes at least one second outlet window and plural second block patterns respectively disposed within the at least one second outlet window and formed a second row pattern collectively. Each of the plural second block patterns respectively correspond to one of the plural illuminants. A first window length of the entire contour of the plural first outlet windows is as long as a second window length of the at least one second outlet window. And the first row pattern is not identical to the second row pattern, thereby providing consistent contour halos for the two rows of keyswitches.
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公开(公告)号：US20230358944A1
公开(公告)日：2023-11-09
申请号：US18221367
申请日：2023-07-12
Applicant: DARFON ELECTRONICS CORP.
Inventor： Ying-Lan Liu , Hsin-Cheng Ho , Heng-Yi Huang , Chao-Yu Chen
CPC classification number: G02B6/0055 , G02B6/009 , G06F3/0202
Abstract: A backlight module includes a lighting board, a light guide panel, a shielding sheet, and a protrusion structure. The lighting board includes two non-intersected traces, a plurality of microstructure regions and at least one illuminant unit. The illuminant unit is connected between the microstructure regions. The microstructure regions do not overlap with the two non-intersected traces. The light guide panel is disposed above the lighting board, and the shielding sheet is disposed above the light guide panel. The protrusion structure is formed on the shielding sheet, protrudes towards the lighting board, and is between the microstructure regions. The protrusion structure diffuses light of the illuminant unit at an early section of its light path to enter into the light guide panel for lateral transmission. The plural microstructure regions reflect and recycle the light at a following section of the light path to jointly enhance the uniformity of illuminating a keycap.
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