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公开(公告)号：US20240118476A1
公开(公告)日：2024-04-11
申请号：US18368021
申请日：2023-09-14
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chao-Yu Chen
CPC classification number: G02B6/0021 , G02B6/005 , G02B6/0068 , G06F3/0202
Abstract: A backlight keyswitch includes a backlight module and a keyswitch body having a cap with a symbol. The backlight module disposed under the cap includes a light guide plate, a light-blocking sheet, 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, and a micro optical layer. The light-blocking sheet is located above the backlight circuit board and has a transparent region. The light guide plate is located between the light-blocking sheet and the backlight circuit board. The micro optical layer is parallel to the light guide plate and formed corresponding to the transparent region to guide the first, second, and third color lights to the symbol and has first and second clearance regions respectively adjacent to the first and second lighting units in the longitudinal direction.
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公开(公告)号：US11914185B1
公开(公告)日：2024-02-27
申请号：US18235897
申请日：2023-08-21
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 cap with a symbol, and a backlight module under the cap and having first and second light modifying layers, a light guide plate, a light-blocking sheet having a transparent region corresponding to the cap, and first, third, and second lighting units arranged sequentially along a longitudinal direction for emitting first, third, and second color lights. The first and second light modifying layers might be ink layers formed on the light-blocking sheet and located outside the first and second lighting units, with colors of the first and second ink layers at least corresponding to colors of the second and first color lights respectively to achieve a mixed color. Alternatively, the first and second light modifying layers might be adhesive layers arrange parallel to the light guide plate, the first and second adhesive layers scattering a respective one of the first and second color light.
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公开(公告)号：US20220199339A1
公开(公告)日：2022-06-23
申请号：US17543696
申请日：2021-12-06
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chao-Yu Chen
Abstract: A backlight keyboard includes a keyswitch assembly, a base and a light guide plate. The keyswitch assembly and the base are suitable for several language keyboards. A first keyswitch and a second keyswitch of a first keyswitch assembly correspond to a third keyswitch of a second keyswitch assembly. A first base and a second base respectively have at least one hole. The light guide plate has a light guide substrate and a light extracting portion. Union of the holes is set as a difference region on the light guide substrate. The light extracting portion is disposed on the difference region and used to guide light through the corresponding hole toward the corresponding keyswitch when the light guide substrate is disposed under the specific base.
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公开(公告)号：US12046428B2
公开(公告)日：2024-07-23
申请号：US18081702
申请日：2022-12-15
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chao-Yu Chen
CPC classification number: H01H13/83 , G02B6/0088 , H01H2219/058
Abstract: A backlight keyboard includes a first keyswitch, a first backlight source, a light guide plate and a first board having first and second holes. The light guide plate is applied to the backlight keyboard and a second backlight keyboard including a second keyswitch, a second backlight source and a second board having third and fourth holes. The second keyswitch on the second backlight keyboard is shifted transversely relative to the first keyswitch on the backlight keyboard to make the first and fourth holes have a first overlapping area. The light guide plate has a first dot structure corresponding to the first and third holes and a second dot structure corresponding to the second and fourth holes except the first overlapping area for guiding light to symbols on the first and second keyswitches. The first dot structure is less than the second dot structure in dot intensity.
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公开(公告)号：US20240230982A9
公开(公告)日：2024-07-11
申请号：US18376818
申请日：2023-10-04
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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Patent Agency Ranking
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：US11923156B2
公开(公告)日：2024-03-05
申请号：US17873128
申请日：2022-07-25
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chao-Yu Chen
CPC classification number: H01H13/83 , G02B6/0021 , G02B6/0025 , G02B6/0028 , G02B6/0036
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 disposed on the light guide plate. The light calibration layer is disposed on the light penetrating membrane and has a second contour. The adhering component is disposed 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：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：US11782520B2
公开(公告)日：2023-10-10
申请号：US17534463
申请日：2021-11-24
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chao-Yu Chen
CPC classification number: G06F3/0219 , H01H13/83 , H01H2219/054
Abstract: A backlight keyboard includes a first language keyswitch set having adjacent first and second keyswitches, a first backlight module disposed under the first language keyswitch set, and a masking sheet. The masking sheet is suitable for the backlight keyboard and a second backlight keyboard including a second backlight module and a second language keyswitch set. The first and second keyswitches on the backlight keyboard coincide with a third keyswitch in the second language keyswitch set on the second backlight keyboard. The masking sheet has a first light-exit region layout corresponding to the first, second, and third keyswitches for allowing light to be incident to symbols on the first, second, and third keyswitches. In other words, the masking sheet of the present invention can be applied to different backlight keyboards having different language keyswitch sets.
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公开(公告)号：US20230236681A1
公开(公告)日：2023-07-27
申请号：US18079002
申请日：2022-12-12
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chao-Yu Chen , Shao-Lun Hsiao
IPC: G06F3/0362 , G06F3/0354
CPC classification number: G06F3/0362 , G06F3/03543 , G06F2203/0333
Abstract: A wheel device is applied to a mouse and includes a supporter, a wheel module, a lighting unit and a sheltering component. The wheel module includes a wheel axle, an encoder and a wheel component. The wheel axle includes an axle body, a wheel surface and a wheel frame. The axle body is rotatably disposed on the supporter and on center of the wheel frame. The wheel surface is located on an outer surface of the wheel frame. The encoder is connected to the axle body to detect rotation parameters of the wheel axle. The wheel component covers the wheel surface. The lighting unit is disposed on the supporter and inside the wheel frame, and emits an illumination beam to the wheel module. The sheltering component is disposed on the supporter and covers the lighting unit to prevent the illumination beam from leakage through two sides of the wheel component.
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