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公开(公告)号：US11574778B2
公开(公告)日：2023-02-07
申请号：US17810879
申请日：2022-07-06
Applicant: Darfon Electronics Corp.
Inventor： Heng-Yi Huang , Hsin-Cheng Ho , Yuan-Bao Chen
Abstract: An illuminated keyswitch structure with an illuminating module includes a base plate, a drive circuit board under the base plate, a spacer between the drive circuit board and the base plate, and a light-emitting part on the circuit board. The spacer has a through hole communicating with an opening of the base plate in a vertical direction. The light-emitting part is located in the through hole, and falls within a projection of the opening in the vertical direction. The light-emitting part has a top surface that is lower than or equal to a bottom surface of the base plate in the vertical direction. The structure of the illuminated keyswitch structure around the light-emitting part can keep flat by the spacer. The spacer can prevent the light-emitting part from structurally entering the opening, avoiding structural interference between the light-emitting part and other components above the base plate.
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公开(公告)号：US12253706B2
公开(公告)日：2025-03-18
申请号：US18767973
申请日：2024-07-09
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chun-Tan Wu , Heng-Yi Huang
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 plate hole for accommodating the light emitting unit. The lighting board has at least one 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 at least one pair of pads. Each of the at least one 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. At least one lighting area is located between the at least one pair of pads.
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公开(公告)号：US12198877B2
公开(公告)日：2025-01-14
申请号：US18512073
申请日：2023-11-17
Applicant: DARFON ELECTRONICS CORP.
Inventor： Heng-Yi Huang , Hsin-Cheng Ho
IPC: H01H13/83 , F21V8/00 , H01H13/02 , H01H13/705 , H01H3/12
Abstract: A backlight module configured to illuminate at least one key cap of a lighting keyboard. The backlight module includes a lighting board, a light emitting unit and a light guide plate. The lighting board has a first reflective layer, a lighting circuit and two aligned micro-structure regions, all three at least partially being layered in parallel with each other. The two micro-structure regions reflect lights and are separated by the lighting circuit. The light emitting unit includes plural color dies connecting electrically with the lighting circuit. The light guide plate has a light guide hole for accommodating the light emitting unit. The color dies of the light emitting unit are aligned linearly, while the two micro-structure regions of the lighting board are aligned in perpendicular to the linearly-aligned color dies, with the micro-structure regions disposed at opposite sides the light emitting unit.
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公开(公告)号：US12062506B2
公开(公告)日：2024-08-13
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：US12061353B2
公开(公告)日：2024-08-13
申请号：US18131900
申请日：2023-04-07
Applicant: Darfon Electronics Corp.
Inventor： Hsin-Cheng Ho , Heng-Yi Huang
CPC classification number: G02B6/0043 , G02B6/0083 , G06F3/0202
Abstract: A backlit module for a backlit keyboard is provided. The backlit module includes a lighting board. The lighting board includes a substrate and an electronic device layer. The electronic device layer is disposed on the substrate. The electronic device layer includes a plurality of key circuit groups. Each of the key circuit groups corresponds to a key group of the backlit keyboard, and includes one or more light sources and a resistor. When the key circuit group includes a plurality of light sources, the light sources are arranged in parallel. The one or more light sources correspond to one or more key of the key group. The resistor is arranged in series with the one or more light sources.
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Patent Agency Ranking
公开(公告)号：US20240134112A1
公开(公告)日：2024-04-25
申请号：US18376818
申请日：2023-10-03
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chao-Yu Chen , Heng-Yi Huang
CPC classification number: G02B6/0091 , G02B6/0068 , H01H13/023 , H01H2219/06 , H01H2219/062
Abstract: A lighting keyboard includes a backlight module and at least one keyswitch. The backlight module includes a lighting unit, a light guide panel, and a lighting board for illuminating a keycap of the keyswitch. The light guide panel includes a panel hole to accommodate the lighting unit. The light guide panel further includes plural slots intervally surrounding the lighting unit. The lighting board includes a micro-structure region facing toward the light guide panel. Each of the slots of the light guide panel has a bulge portion protruding to the lighting unit. At two sides of the bulge portion, each of the slots forms two slots walls with an obtuse angle, thereby expanding the transmitting angle for the multi-color lights from the lighting unit and enhancing the light-mixing uniformity while illuminating the keycap.
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公开(公告)号：US20240096568A1
公开(公告)日：2024-03-21
申请号：US18512073
申请日：2023-11-17
Applicant: DARFON ELECTRONICS CORP.
Inventor： Heng-Yi Huang , Hsin-Cheng Ho
IPC: H01H13/83 , F21V8/00 , H01H13/02 , H01H13/705
CPC classification number: H01H13/83 , G02B6/0055 , H01H13/023 , H01H13/705 , H01H3/125
Abstract: A backlight module configured to illuminate at least one key cap of a lighting keyboard. The backlight module comprises a lighting board, a light emitting unit and a light guide plate. The lighting board has a first reflective layer, a lighting circuit and two aligned micro-structure regions, all three at least partially being layered in parallel with each other. The two micro-structure regions reflect lights and are separated by the lighting circuit. The light emitting unit includes plural color dies connecting electrically with the lighting circuit. The light guide plate has a light guide hole for accommodating the light emitting unit. The color dies of the light emitting unit are aligned linearly, while the two micro-structure regions of the lighting board are aligned in perpendicular to the linearly-aligned color dies, with the micro-structure regions disposed at opposite sides the light emitting unit.
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公开(公告)号：US20230420199A1
公开(公告)日：2023-12-28
申请号：US18367420
申请日：2023-09-12
Applicant: DARFON ELECTRONICS CORP.
Inventor： Ying-Lan Liu , Hsin-Cheng Ho , Heng-Yi Huang
CPC classification number: H01H13/83 , G02B6/0068 , G02B6/0055 , G02B6/0021 , G02B6/0031 , G02B6/0051 , H01H2219/056 , H01H2219/06 , H01H2219/048 , H01H2219/04
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 overlapping with the pair of pads. One of the pair of pads has a first branch and a first hollow area behind the first branch, the other one of the pair of pads has a second branch and a second hollow area behind the second branch, and the light emitting unit is disposed between the first hollow area and the second hollow area.
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公开(公告)号：US11764004B2
公开(公告)日：2023-09-19
申请号：US17234808
申请日：2021-04-20
Applicant: DARFON ELECTRONICS CORP.
Inventor： Heng-Yi Huang , Hsin-Cheng Ho , Yuan-Bao Chen
CPC classification number: H01H13/023 , H01H13/04 , H01H13/14 , H01H13/52
Abstract: An illuminated keyswitch structure includes a base plate, a drive circuit board under the base plate, a spacer between the drive circuit board and the base plate, and a light-emitting part on the circuit board. The spacer has a through hole communicating with an opening of the base plate in a vertical direction. The sidewall of the through hole is opaque. The light-emitting part is located in the through hole, and falls within a projection of the opening in the vertical direction. The light-emitting part has a top surface that is lower than or equal to a bottom surface of the base plate in the vertical direction. The structure of the illuminated keyswitch structure around the light-emitting part can keep flat by the spacer. The spacer can prevent the light-emitting part from structurally entering the opening, avoiding structural interference between the light-emitting part and other components above the base plate.
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公开(公告)号：US20220412541A1
公开(公告)日：2022-12-29
申请号：US17897211
申请日：2022-08-28
Applicant: DARFON ELECTRONICS CORP.
Inventor： Hsin-Cheng Ho , Heng-Yi Huang , Yi-Tung Lo
Abstract: An illuminating circuit structure includes a film sheet, an illuminant, a printed baseline layer, and a printed pad layer. The printed baseline layer includes a first baseline segment and a second baseline segment printed on the film sheet, while the printed pad layer includes a first bar pad and a second bar pad. For a first baseline head of the first baseline layer and a first pad head of the first bar pad, one of which extends along a first direction and the other of which extends along a second direction not parallel to the first direction. Therefore, the first baseline segment and the first bar pad achieve electrical connection despite of an existed print shifting. Similarly, a second baseline head of the second baseline layer and a second pad head of the second bar pad also can achieve electrical connection despite of an existed print shifting.
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