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1.发明申请公开(公告)号：US20190371538A1
公开(公告)日：2019-12-05
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：US20230341606A1
公开(公告)日：2023-10-26
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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公开(公告)号：US20220336167A1
公开(公告)日：2022-10-20
申请号：US17847853
申请日：2022-06-23
Applicant: Darfon Electronics Corp.
Inventor： Heng-Yi HUANG , Hsin-Cheng HO
IPC: H01H13/83
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：US20220139648A1
公开(公告)日：2022-05-05
申请号：US17510597
申请日：2021-10-26
Applicant: DARFON ELECTRONICS CORP.
Inventor： Heng-Yi HUANG , Hsin-Cheng HO
IPC: H01H13/702 , G06F1/16 , G06F3/02 , H01H13/83
Abstract: A backlight apparatus, used in an illuminated keyboard, includes a light-guiding plate, a light-shielding membrane, a light-reflecting sheet, a plurality of first translucent glue bodies, and a plurality of second translucent glue bodies. The light-guiding plate has a plurality of through holes. Each of the first translucent glue bodies corresponds to one of the through holes. Each first translucent glue body is placed on a front surface of the light-guiding plate, and surrounds a respective circumference of the corresponding through hole to bond the light-shielding membrane thereabove and the light-guiding plate therebelow. Each first translucent glue body has a respective breach. Each of the second translucent glue bodies corresponds to one of the first translucent glue bodies, is placed via at least one portion thereof in the breach of the corresponding first translucent glue body, and bonds the light-shielding membrane thereabove and the light-guiding plate therebelow.
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Patent Agency Ranking
公开(公告)号：US20230377818A1
公开(公告)日：2023-11-23
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：US20220351921A1
公开(公告)日：2022-11-03
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：US20230326692A1
公开(公告)日：2023-10-12
申请号：US18130462
申请日：2023-04-04
Applicant: Darfon Electronics Corp.
Inventor： Hsin-Cheng HO , Heng-Yi HUANG
IPC: H01H13/83
CPC classification number: H01H13/83 , H01H2219/062 , H01H2219/06
Abstract: An illuminant board includes a substrate, a circuit layer, a light guide plate, a plurality of microstructures and at least one illuminant. The substrate defines at least one key projection. The circuit layer is disposed on the substrate. The circuit layer includes at least one high-potential main conductive wire and at least one low-potential main conductive wire. The light guide plate is disposed opposite to the circuit layer. The microstructures are located between the light guide plate and the substrate. The illuminant is coupled to the circuit layer. The illuminant provides a luminous light inletting into the light guide plate, and a path of the luminous light is guided by the microstructures. The high-potential main conductive wire and/or the low-potential main conductive wire extend and pass through the key projection. Orthographic projections of the microstructures are located between the high-potential main conductive wire and the low-potential main conductive wire.
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公开(公告)号：US20220406977A1
公开(公告)日：2022-12-22
申请号：US17538616
申请日：2021-11-30
Applicant: DARFON ELECTRONICS CORP.
Inventor： Hsin-Cheng HO , Heng-Yi HUANG , Yi-Tung LO
Abstract: A printed circuit structure includes a printed conductive pattern and a printed conductive adhesive pattern. The printed conductive pattern includes a first wire and a second wire. One of a first main contact portion of the first wire and a first main contact portion of a first adhesive of the printed conductive adhesive pattern extends in a first direction, while another thereof extends in a second direction perpendicular to the first direction. With different lengths in the first direction, manufacturing errors between the first wire and the first adhesive in the first direction can be contained without affecting the connection in between. Similarly, a second main contact portion of the second wire and a second main contact portion of a second adhesive of the printed conductive adhesive pattern can also adopt the same design in the first direction to ensure the electric connection.
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9.发明申请公开(公告)号：US20190371537A1
公开(公告)日：2019-12-05
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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