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公开(公告)号：US20220216018A1
公开(公告)日：2022-07-07
申请号：US17234808
申请日：2021-04-20
Applicant: DARFON ELECTRONICS CORP.
Inventor： Heng-Yi Huang , Hsin-Cheng Ho , Yuan-Bao Chen
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：US10895372B2
公开(公告)日：2021-01-19
申请号：US16263017
申请日：2019-01-31
Applicant: Darfon Electronics Corp.
Inventor： Heng-Yi Huang , Hsin-Cheng Ho , Tsai-Yu Chen , Hung-Chuan Cheng
Abstract: A light source board includes a substrate; a metal reactive layer disposed on the substrate; a metal conductive layer disposed on the metal reactive layer; a metal alloy layer disposed on the metal conductive layer; and at least one light source disposed on the metal alloy layer. A material of the metal reactive layer is a Sn—Bi type alloy or a Sn—Ag—Cu type alloy, and arrangements of materials of the metal reactive layer and the metal conductive layer are respectively an arrangement of silver paste and copper, an arrangement of silver paste and nickel, an arrangement of silver paste and silver, an arrangement of copper paste and copper, an arrangement of copper paste and nickel, or an arrangement of copper paste and silver.
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公开(公告)号：US12259574B2
公开(公告)日：2025-03-25
申请号：US18376818
申请日：2023-10-04
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chao-Yu Chen , Heng-Yi Huang
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：US20250062082A1
公开(公告)日：2025-02-20
申请号：US18804146
申请日：2024-08-14
Applicant: DARFON ELECTRONICS CORP.
Inventor： Heng-Yi Huang , Chao-Yu Chen , Hsin-Cheng Ho
Abstract: An illuminated touchpad includes a panel, a light guide layer and a circuit board. The panel includes a first light transmitting region and a second light transmitting region. The light guide layer includes a first light guide region and a second light guide region. The circuit board includes a controller, a touch module, a first light source and a second light source. The controller controls the first light source to emit light, such that the first light guide region guides the light emitted by the first light source to the first light transmitting region. When the touch module senses that the first light transmitting region is touched, the controller controls the second light source to emit light, such that the second light guide region guides the light emitted by the second light source to the second light transmitting region.
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公开(公告)号：US12204135B2
公开(公告)日：2025-01-21
申请号：US18592794
申请日：2024-03-01
Applicant: Darfon Electronics Corp.
Inventor： Heng-Yi Huang , Hsin-Cheng Ho , Po-Yueh Chou
IPC: F21V8/00 , H01H13/705 , H01H13/83
Abstract: A backlit-module-embedded illuminated keyswitch structure includes a baseplate, a mask film disposed below the baseplate and having a first coating configured to substantially reflect a light, a light guide sheet disposed at one side of the mask film and having a light source hole, a reflective layer disposed at one side of the light guide sheet opposite to the mask film and having an opening communicating with the light source hole, a top glue configured to connect the mask film and the light guide sheet around the light source hole, and a bottom glue configured to connect the light guide sheet and the reflective layer around the light source hole. The first coating covers the light source hole. In a stacked direction of the mask film, the light guide sheet, and the reflective layer, at least one of the top glue and the bottom glue overlaps the first coating.
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Patent Agency Ranking
公开(公告)号：US20240361509A1
公开(公告)日：2024-10-31
申请号：US18767973
申请日：2024-07-09
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chun-Tan Wu , Heng-Yi Huang
CPC classification number: G02B6/0031 , G02B6/002 , G06F3/0202
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：US12026321B2
公开(公告)日：2024-07-02
申请号：US18134562
申请日：2023-04-13
Applicant: DARFON ELECTRONICS CORP.
Inventor： Heng-Yi Huang
IPC: G06F3/02
CPC classification number: G06F3/0202
Abstract: A portable computer device includes a computer body, a keyboard, a backlight circuit board and a metal layer. The computer body has a wireless transceiver and a system ground terminal. The keyboard is mounted on the computer body. The backlight circuit board is disposed under the keyboard and is electrically connected to the computer body. The backlight circuit board has a plurality of light sources and a circuit trace. The circuit trace is electrically connected to the plurality of light sources. The wireless transceiver is located at a side of the backlight circuit board. The metal layer is formed on a position of the backlight circuit board where there is no circuit trace and is adjacent to the wireless transceiver. The metal layer is electrically connected to the system ground terminal for suppressing electromagnetic interference of the backlight circuit board to the wireless transceiver.
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公开(公告)号：US20230377816A1
公开(公告)日：2023-11-23
申请号：US18131885
申请日：2023-04-07
Applicant: DARFON ELECTRONICS CORP.
Inventor： Ying-Lan Liu , Heng-Yi Huang
IPC: H01H13/83 , H01H13/705 , F21V8/00
CPC classification number: H01H13/83 , H01H13/705 , G02B6/0021 , G02B6/0055 , H01H2219/04 , H01H2219/06
Abstract: A lighting keyboard includes a backlight module and a keyswitch. The backlight module includes two lighting units, a light guide panel, a lighting board and a micro-structure layer. The light guide panel includes two panel holes to accommodate the two lighting units. The light guide panel further includes at least one slot located between the two lighting units. The lighting board is disposed in parallel to the light guide panel, and the lighting board includes at least one pair of non-parallel main traces in electrical connection with the two lighting units. The micro-structure layer is disposed in parallel to the light guide panel, and the micro-structure layer includes at least one micro-structure region. The at least one micro-structure region is disposed between the two lighting units, and meanwhile the at least one slot of the light guide panel is at least partially located within the at least one micro-structure region.
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公开(公告)号：US20230333666A1
公开(公告)日：2023-10-19
申请号：US18134562
申请日：2023-04-13
Applicant: DARFON ELECTRONICS CORP.
Inventor： Heng-Yi Huang
IPC: G06F3/02
CPC classification number: G06F3/0202
Abstract: A portable computer device includes a computer body, a keyboard, a backlight circuit board and a metal layer. The computer body has a wireless transceiver and a system ground terminal. The keyboard is mounted on the computer body. The backlight circuit board is disposed under the keyboard and is electrically connected to the computer body. The backlight circuit board has a plurality of light sources and a circuit trace. The circuit trace is electrically connected to the plurality of light sources. The wireless transceiver is located at a side of the backlight circuit board. The metal layer is formed on a position of the backlight circuit board where there is no circuit trace and is adjacent to the wireless transceiver. The metal layer is electrically connected to the system ground terminal for suppressing electromagnetic interference of the backlight circuit board to the wireless transceiver.
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公开(公告)号：US10720289B1
公开(公告)日：2020-07-21
申请号：US16553145
申请日：2019-08-27
Applicant: DARFON ELECTRONICS CORP.
Inventor： Hsin-Cheng Ho , Heng-Yi Huang , Tsai-Yu Chen , Hung-Chuan Cheng , Yang-Cheng Wu
IPC: H01H13/83 , H01H13/88 , H01H3/12 , H01H13/7065
Abstract: A light emitting keyboard includes a bottom board, keyswitches, and a lighting board. The lighting board is disposed between the bottom board and the keyswitches or under the bottom board and includes a flexible substrate having a first hole, multiple-light emitting diodes corresponding to the keyswitches, first and second silver-paste circuit layers formed on upper and lower surfaces of the flexible substrate respectively, a via pillar formed in the first hole to be coupled to the first and second silver-paste circuit layers, a copper layer plated on the first and second silver-paste circuit layers, and a first protection layer coated on the copper layer and having second holes. Each multiple-light emitting diode is disposed on the copper layer plated on the first silver-paste circuit layer through the corresponding second hole to be coupled to the first silver-paste circuit layer.
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