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41.发明申请公开(公告)号：US20140133182A1
公开(公告)日：2014-05-15
申请号：US14066678
申请日：2013-10-29
Inventor： Liang-Yu Yao , Hsin-Cheng Ho , Yen-Chang Chen
IPC: F21V8/00
CPC classification number: G02B6/0065 , G02B6/0036 , G02B6/0055 , G06F3/0202 , G06F3/023 , H01H13/83 , H01H2219/044 , H01H2219/06 , H01H2219/062 , H01H2229/002 , H01H2229/012
Abstract: A light guide plate structure includes a light guide plate, a first medium layer, a micro structure, a second medium layer, and a reflection layer. The light guide plate has a light exit surface and a bottom surface opposite to the light exit surface. The first medium layer is formed on the light exit surface. The micro structure is formed on the bottom surface for redirecting light inside the light guide plate to emit from the light exit surface. The second medium layer is formed on the micro structure. The refractive index of the first medium layer and the refractive index of the second medium layer are less than the refractive index of the light guide plate but greater than the refractive index of air. The reflection layer is formed on the second medium layer for reflecting light inside the light guide plate to emit from the light exit surface.
Abstract translation: 导光板结构包括导光板，第一介质层，微结构，第二介质层和反射层。 导光板具有光出射面和与光射出面相反的底面。 第一介质层形成在光出射面上。 微结构形成在底表面上，用于重新引导导光板内的光从光出射表面发射。 第二介质层形成在微结构上。 第一介质层的折射率和第二介质层的折射率小于导光板的折射率，但大于空气的折射率。 反射层形成在第二介质层上，用于反射导光板内的光从光出射面发射。
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公开(公告)号：US12259112B2
公开(公告)日：2025-03-25
申请号：US17897211
申请日：2022-08-28
Applicant: DARFON ELECTRONICS CORP.
Inventor： Hsin-Cheng Ho , Heng-Yi Huang , Yi-Tung Lo
IPC: G06F1/16 , F21V19/00 , H05K1/11 , F21Y115/10 , G06F3/02
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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公开(公告)号：US12019261B2
公开(公告)日：2024-06-25
申请号：US18128261
申请日：2023-03-30
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chao-Yu Chen , Heng-Yi Huang , Hsin-Cheng Ho
IPC: H01H13/83 , F21V8/00 , H01H13/704
CPC classification number: G02B6/0031 , G02B6/0021 , G02B6/006 , H01H13/704 , H01H13/83 , H01H2219/039 , H01H2219/044
Abstract: A back light module is applied to a lighting keyboard with a plurality of keyswitches and includes a lighting unit, a light guide plate, a light penetrating membrane, a light calibration layer and an adhering component. The light guide plate has an opening used to accommodate the lighting unit. The light penetrating membrane is located on the light guide plate. The light penetrating membrane is located on the light penetrating membrane and has a second contour. The adhering component is located between the light guide plate and the light penetrating membrane, and has a first contour greater than the second contour. The adhering component includes a front region, a rear region and a hollow region. The front region is covered by the light calibration layer. The rear region is partly covered or not covered by the light calibration layer. The hollow region corresponds to and is larger than the opening.
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公开(公告)号：US20240177950A1
公开(公告)日：2024-05-30
申请号：US18431561
申请日：2024-02-02
Applicant: DARFON ELECTRONICS CORP.
Inventor： Heng-Yi Huang , Hsin-Cheng Ho , Po-Yueh Chou
IPC: H01H13/83 , F21V8/00 , H01H13/02 , H01H13/705 , H01H3/12
CPC classification number: H01H13/83 , G02B6/0055 , H01H13/023 , H01H13/705 , H01H3/125
Abstract: A lighting keyboard is provided with at least one keyswitch, a support plate and a backlight module. The keyswitch has a keycap and a switch under the keycap. The support plate connects beneath the keycap by a support mechanism. The backlight module has a lighting board configured underneath the support plate and corresponding to the keycap. The lighting board includes a board, a first reflective layer and a circuit layer. The circuit layer is disposed on the board and includes a concave-convex structure and circuit traces. The circuit traces electrically connects with a light emitting unit. The first reflective layer covers the concave-convex structure to form microstructure regions.
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公开(公告)号：US11947150B2
公开(公告)日：2024-04-02
申请号：US18192848
申请日：2023-03-30
Applicant: Darfon Electronics Corp.
Inventor： Heng-Yi Huang , Hsin-Cheng Ho , Po-Yueh Chou
IPC: F21V8/00 , H01H13/705 , H01H13/83
CPC classification number: G02B6/0035 , G02B6/0055 , H01H13/705 , H01H13/83 , G02B6/006 , H01H2219/062
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：US20230360869A1
公开(公告)日：2023-11-09
申请号：US18221371
申请日：2023-07-12
Applicant: DARFON ELECTRONICS CORP.
Inventor： Ying-Lan Liu , Hsin-Cheng Ho , Heng-Yi Huang , Chao-Yu Chen
IPC: H01H13/83 , H01H13/705
CPC classification number: H01H13/83 , H01H13/705 , H01H2219/04 , H01H2219/056 , H01H2219/06
Abstract: A backlight module is configured to illuminate at least one keycap. The backlight module includes a shielding sheet, a lighting board and a protrusion structure. The lighting board includes an illuminant unit and a pair of footprints respectively connecting the illuminant unit. Each of the footprints includes at least one hollow area, and the at least one hollow area overlaps at least a portion of the illuminant unit. The protrusion structure is formed at the shielding sheet. The protrusion structure protrudes towards the light board and at least partially overlaps the pair of footprints, so that the backlight module diffuses light of the illuminant between the protrusion structure and the footprints.
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公开(公告)号：US20230314691A1
公开(公告)日：2023-10-05
申请号：US18128235
申请日：2023-03-30
Applicant: DARFON ELECTRONICS CORP.
Inventor： Ying-Lan Liu , Hsin-Cheng Ho , Heng-Yi Huang
IPC: F21V8/00
CPC classification number: G02B6/0051
Abstract: A lighting keyboard includes a backlight module and at least one keyswitch. The backlight module includes a lighting substrate and a protruding structure. The lighting substrate includes two non-intersecting traces and a light emitting unit. The light emitting unit is connected between the two non-intersecting traces. A position of the protruding structure corresponds to a position of the light emitting unit and the protruding structure is located between the two non-intersecting traces. The at least one keyswitch is disposed on the backlight module.
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公开(公告)号：US11728110B2
公开(公告)日：2023-08-15
申请号：US17847853
申请日：2022-06-23
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 is provided. A base plate includes plural openings and plural rib portions separating the openings. A drive circuit board is disposed under the base plate. A spacer having a through hole is disposed underneath the base plate and above the drive circuit board. A light-emitting part with low illuminance is disposed on the drive circuit board and in the through hole, and the light-emitting part vertically corresponding to one of the openings of the base plate. A light-permeable covering structure includes a first covering layer and a second covering layer. The second covering layer vertically corresponds to the light-emitting part and said corresponding opening of the base plate. The second covering layer blocks at least partial light of the light-emitting part toward said corresponding opening to reduce illuminating intensity provided there through.
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公开(公告)号：US10727009B2
公开(公告)日：2020-07-28
申请号：US16208657
申请日：2018-12-04
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 composite circuit layer on the substrate, a first protective layer on the composite circuit layer, and a plurality of light sources on the pad portions, respectively. The substrate has a long side, a first short side, and a second short side. The composite circuit layer includes a first conductive trace layer and a second conductive trace layer stacked on the first conductive trace layer. A conductivity of the second conductive trace layer is higher than a conductivity of the first conductive trace layer. The composite circuit layer has a wire portion formed of at least the first conductive trace layer and a plurality of pad portions each formed of at least the first conductive trace layer and the second conductive trace layer. The wire portion is electrically coupled to the pad portions. The first protective layer exposes the pad portions.
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公开(公告)号：US10692663B2
公开(公告)日：2020-06-23
申请号：US16208645
申请日：2018-12-04
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 composite circuit layer on the substrate, a first protective layer on the composite circuit layer, and a plurality of light sources on the pad portions, respectively. The substrate has a long side, a first short side, and a second short side. The composite circuit layer includes a first conductive trace layer and a second conductive trace layer stacked on the first conductive trace layer. A conductivity of the second conductive trace layer is higher than a conductivity of the first conductive trace layer. The composite circuit layer has a wire portion formed of at least the first conductive trace layer and a plurality of pad portions each formed of at least the first conductive trace layer and the second conductive trace layer. The wire portion is electrically coupled to the pad portions. The first protective layer exposes the pad portions.
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