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公开(公告)号：US20240429005A1
公开(公告)日：2024-12-26
申请号：US18746069
申请日：2024-06-18
Applicant: Darfon Electronics Corp.
Inventor： Chao-Yu Chen , Hsin-Cheng Ho
Abstract: A touch lighting keyswitch can be changed to a touch lighting function key bar includes a circuit board, a first sheltering component, a first light guiding component, a second sheltering component and a second light guiding component. The circuit board has a first light unit and a second light unit respectively emitting a first illumination beam and a second illumination beam. The first sheltering component has a character hole. The first light guiding component is disposed between the circuit board and the first sheltering component and adapted to guide the first illumination beam passing through the character hole. The second sheltering component is disposed above the first sheltering component, and has an opening relevant to the character hole. The second light guiding component is disposed between the first sheltering component and the second sheltering component and adapted to guide the second illumination beam passing through the opening.
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公开(公告)号：US20240404770A1
公开(公告)日：2024-12-05
申请号：US18657796
申请日：2024-05-08
Applicant: DARFON ELECTRONICS CORP.
Inventor： Po-Wei Tsai
IPC: H01H13/70
Abstract: A plastic board suitable for a keyboard having first and second keyswitch sets includes first and second board portions and transverse dividing slots. The first and second board portions have first and second mounting areas respectively corresponding to the first and second keyswitch sets. First dividing slots of the first board portion extend sequentially along a periphery of at least one first mounting area to separate first and second board regions. Second dividing slots of the second board portion extend sequentially along a periphery of at least one second mounting area to separate third and fourth board regions. The transverse dividing slots are formed separately between the first and second board portions to separate the first and third board regions and separate the second and fourth board regions. The first, second, third, and fourth board regions have a feeding point, respectively, to be formed by an injection molding process.
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公开(公告)号：US20240379308A1
公开(公告)日：2024-11-14
申请号：US18644074
申请日：2024-04-23
Applicant: Darfon Electronics Corp.
Inventor： Chih-Hung Chien , Chih-Chung Yen
IPC: H01H13/7073 , H01H13/02
Abstract: A backlight keyswitch includes a keyswitch body, a membrane circuit board disposed under the keyswitch body, a backlight module and an elastic body having a bridge structure, a central pillar, and a ring-shaped base disposed on the membrane circuit board. The keyswitch body has a keycap with a symbol. The backlight module is disposed under the membrane circuit board for emitting light to the symbol. The elastic body is disposed between the keycap and the membrane circuit board for returning the keycap to its original position. The bridge structure extends from the ring-shaped base toward the keycap to connect to the central pillar for supporting the central pillar, such that the central pillar is suspended relative to the membrane circuit board and abuts against the keycap. A projection of the central pillar on the keycap completely covers the symbol.
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公开(公告)号：US20240379303A1
公开(公告)日：2024-11-14
申请号：US18780572
申请日：2024-07-23
Applicant: Darfon Electronics Corp.
Inventor： Yen-Chang CHEN , Po-Yueh CHOU
Abstract: A backlight module for a lighting keyboard including at least two heat-dissipating keys comprises a reflective layer, a light guide panel and a shielding sheet and has at least two penetration channels. The reflective layer, the light guide panel and the shielding sheet are stacked up and down. The penetration channels symmetrically correspond to the heat-dissipating keys respectively and penetrate the reflective layer, the light guide panel and the shielding sheet. The penetration channels are respectively provided with one light-reducing pattern at their periphery for blocking light. At least two diffusion patterns are arranged adjacent to the light-reducing patterns for guiding light to illuminate the heat-dissipating keys. The light-reducing patterns and the diffusion patterns form at least two heat-reducing optical pattern groups respectively. The heat-reducing optical pattern groups respectively corresponding to the heat-dissipating keys have identical patterns.
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公开(公告)号：US20240274379A1
公开(公告)日：2024-08-15
申请号：US18398285
申请日：2023-12-28
Applicant: Darfon Electronics Corp.
Inventor： Yen-Chang CHEN , Po-Yueh CHOU
CPC classification number: H01H13/023 , G02B6/0035 , G02B6/0085 , G06F3/0202 , H01H2219/056 , H01H2219/06 , H01H2219/062
Abstract: A backlight module for a lighting keyboard including at least two heat-dissipating keys comprises a reflective layer, a light guide panel and a shielding sheet and has at least two penetration channels. The reflective layer, the light guide panel and the shielding sheet are stacked up and down. The penetration channels symmetrically correspond to the heat-dissipating keys respectively and penetrate the reflective layer, the light guide panel and the shielding sheet. The penetration channels are respectively provided with one light-reducing pattern at their periphery for blocking light. At least two diffusion patterns are arranged adjacent to the light-reducing patterns for guiding light to illuminate the heat-dissipating keys. The light-reducing patterns and the diffusion patterns form at least two heat-reducing optical pattern groups respectively. The heat-reducing optical pattern groups respectively corresponding to the heat-dissipating keys have identical patterns.
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Patent Agency Ranking
公开(公告)号：US20240186080A1
公开(公告)日：2024-06-06
申请号：US18443626
申请日：2024-02-16
Applicant: Darfon Electronics Corp.
Inventor： Heng-Yi HUANG , Yen-Chang CHEN
IPC: H01H13/83
CPC classification number: H01H13/83 , H01H2221/0702
Abstract: An illuminated keyswitch structure and an illuminating module thereof are provided. The illuminating module includes a drive circuit board having a reflector layer disposed thereon, a light-emitting part disposed on the drive circuit board and proximate to the reflector layer, a covering structure having an island-shaped covering portion, and a spacer adhered between the covering structure and the drive circuit board and having a through hole and an adhesive-less clearance fringe at least partially surrounding the through hole, wherein the island-shaped covering portion covers above the light-emitting part and the through hole.
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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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