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公开(公告)号：US10978261B2
公开(公告)日：2021-04-13
申请号：US16897384
申请日：2020-06-10
Applicant: Darfon Electronics Corp.
Inventor： Zheng-Hong Lai , Chih-Ho Hsu , Che-Wei Lee , Jin-Long Chan , Yuan-bao Chen , Chang-En Sun
IPC: H01H13/86 , H01H13/705 , H01H13/06
Abstract: A method for fabricating a keyboard covering film is provided. The method includes steps of: coating a transparent plastic material on an upper surface of a fabric layer before the transparent plastic material is cured; treating the fabric layer and the transparent plastic material by a hot press process to cure the transparent plastic material to form a transparent layer and to make the transparent layer and the fabric layer jointly form a number of keycap receiving sections; forming a mask layer on a lower surface of the fabric layer; removing a portion of the mask layer and a portion of the fabric layer located within each of the keycap receiving sections to form a number of hollow patterns.
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公开(公告)号：US11334172B2
公开(公告)日：2022-05-17
申请号：US17195585
申请日：2021-03-08
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chin-Lung Chan , Hsin-Hung Liu , Chih-Ho Hsu
Abstract: A keyboard with light-emitting and touch functions includes a keyswitch, a backlight module having a light source and a light guide plate, a membrane, a capacitive touch sensing sheet disposed on the membrane and the light guide plate, and a board. The keyswitch includes a cap and a support mechanism movably connected to the cap. Light of the light source is incident into the light guide plate and is emitted toward the cap. The membrane has a switch and is selectively disposed on or under the backlight module. The board is disposed under the backlight module and the membrane and has first and second connection members. The first and second connection members pass through the membrane, the light guide plate and the capacitive touch sensing sheet to be movably connected to the support mechanism, so as to make the cap movable downward relative to the board for triggering the switch.
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公开(公告)号：US20210349544A1
公开(公告)日：2021-11-11
申请号：US17195585
申请日：2021-03-08
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chin-Lung Chan , Hsin-Hung Liu , Chih-Ho Hsu
Abstract: A keyboard with light-emitting and touch functions includes a keyswitch, a backlight module having a light source and a light guide plate, a membrane, a capacitive touch sensing sheet disposed on the membrane and the light guide plate, and a board. The keyswitch includes a cap and a support mechanism movably connected to the cap. Light of the light source is incident into the light guide plate and is emitted toward the cap. The membrane has a switch and is selectively disposed on or under the backlight module. The board is disposed under the backlight module and the membrane and has first and second connection members. The first and second connection members pass through the membrane, the light guide plate and the capacitive touch sensing sheet to be movably connected to the support mechanism, so as to make the cap movable downward relative to the board for triggering the switch.
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公开(公告)号：US20210193411A1
公开(公告)日：2021-06-24
申请号：US17103911
申请日：2020-11-24
Applicant: DARFON ELECTRONICS CORP.
Inventor： Zheng-Hong Lai , Chih-Ho Hsu , Chin-Lung Chan , Che-Wei Lee , Chang-En Sun
Abstract: A waterproof film includes a film reinforcing layer, a light shielding layer, a texture layer, and a pattern. The light shielding layer is combined under the film reinforcing layer and forms a plurality of protruding structures cooperatively with the film reinforcing layer by a hot pressing process. The texture layer is attached to a release film and then formed on a top surface and a side surface of each protruding structure after a hot pressing process is performed and the release film is then peeled. The pattern is formed on the texture layer or the light shielding layer.
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公开(公告)号：US20230245843A1
公开(公告)日：2023-08-03
申请号：US18132433
申请日：2023-04-10
Applicant: DARFON ELECTRONICS CORP.
Inventor： Zheng-Hong Lai , Chih-Ho Hsu , Chin-Lung Chan
IPC: H01H13/705 , H01H13/83
CPC classification number: H01H13/705 , H01H13/83 , H01H2221/07 , H01H2223/044
Abstract: A keyswitch structure includes a switch and a multilayer structure above the switch. The multilayer structure includes an inner flexible layer, a rigid light-transmissive cover sheet, and a flexible light-transmissive layer. The inner flexible layer has a keycap portion and a connection portion extending outward from the keycap portion. The keycap portion is located above the switch and forms a spatial character structure. The rigid light-transmissive cover sheet is disposed on the keycap portion and covers the spatial character structure. The flexible light-transmissive layer covers the inner flexible layer and the rigid light-transmissive cover sheet. A keyboard includes the keyswitch structure and a device casing carrying the keyswitch structure. The multilayer structure is fixed to the device casing. The rigid light-transmissive cover sheet is harder than the flexible light-transmissive layer and structurally protects the spatial character structure from being damaged when the keyswitch structure is pressed.
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Patent Agency Ranking
公开(公告)号：US11367582B2
公开(公告)日：2022-06-21
申请号：US16809493
申请日：2020-03-04
Applicant: DARFON ELECTRONICS CORP.
Inventor： Che-Wei Lee , Chih-Ho Hsu , Zheng-Hong Lai
IPC: H01H13/88 , H01H13/785 , G06F3/02 , G06F1/16
Abstract: A keyswitch includes a base, a keycap, a lift mechanism, a touch circuitry portion, and an outer covering layer. The keycap is connected to the base through the lift mechanism so as to move up and down relative to the base. The touch circuitry portion is disposed on the top surface of the keycap. A connection circuitry portion extends from the touch circuitry portion. The outer covering layer covers the touch circuitry portion and at least a portion of the connection circuitry portion. Thereby, the keyswitch can provide touch function without excessively increasing the whole thickness of the keyswitch. A keyboard includes a plurality of the keyswitches and therefore can provide touch function without excessively increasing the whole thickness of the keyboard.
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公开(公告)号：US20220122788A1
公开(公告)日：2022-04-21
申请号：US17317889
申请日：2021-05-12
Applicant: DARFON ELECTRONICS CORP.
Inventor： Zheng-Hong Lai , Chih-Ho Hsu , Chin-Lung Chan
IPC: H01H13/705 , H01H13/83
Abstract: A keyswitch structure includes a switch and a multilayer structure above the switch. The multilayer structure includes an inner flexible layer, a rigid light-transmissive cover sheet, and a flexible light-transmissive layer. The inner flexible layer has a keycap portion and a connection portion extending outward from the keycap portion. The keycap portion is located above the switch and forms a spatial character structure. The rigid light-transmissive cover sheet is disposed on the keycap portion and covers the spatial character structure. The flexible light-transmissive layer covers the inner flexible layer and the rigid light-transmissive cover sheet. A keyboard includes the keyswitch structure and a device casing carrying the keyswitch structure. The multilayer structure is fixed to the device casing. The rigid light-transmissive cover sheet is harder than the flexible light-transmissive layer and structurally protects the spatial character structure from being damaged when the keyswitch structure is pressed.
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公开(公告)号：US11289288B2
公开(公告)日：2022-03-29
申请号：US17103911
申请日：2020-11-24
Applicant: DARFON ELECTRONICS CORP.
Inventor： Zheng-Hong Lai , Chih-Ho Hsu , Chin-Lung Chan , Che-Wei Lee , Chang-En Sun
Abstract: A waterproof film includes a film reinforcing layer, a light shielding layer, a texture layer, and a pattern. The light shielding layer is combined under the film reinforcing layer and forms a plurality of protruding structures cooperatively with the film reinforcing layer by a hot pressing process. The texture layer is attached to a release film and then formed on a top surface and a side surface of each protruding structure after a hot pressing process is performed and the release film is then peeled. The pattern is formed on the texture layer or the light shielding layer.
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公开(公告)号：US20210225604A1
公开(公告)日：2021-07-22
申请号：US16809493
申请日：2020-03-04
Applicant: DARFON ELECTRONICS CORP.
Inventor： Che-Wei Lee , Chih-Ho Hsu , Zheng-Hong Lai
IPC: H01H13/88 , H01H13/785 , G06F1/16 , G06F3/02
Abstract: A keyswitch includes a base, a keycap, a lift mechanism, a touch circuitry portion, and an outer covering layer. The keycap is connected to the base through the lift mechanism so as to move up and down relative to the base. The touch circuitry portion is disposed on the top surface of the keycap. A connection circuitry portion extends from the touch circuitry portion. The outer covering layer covers the touch circuitry portion and at least a portion of the connection circuitry portion. Thereby, the keyswitch can provide touch function without excessively increasing the whole thickness of the keyswitch. A keyboard includes a plurality of the keyswitches and therefore can provide touch function without excessively increasing the whole thickness of the keyboard.
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公开(公告)号：US10770246B2
公开(公告)日：2020-09-08
申请号：US15971021
申请日：2018-05-04
Applicant: Darfon Electronics Corp.
Inventor： Zheng-Hong Lai , Chih-Ho Hsu , Che-Wei Lee , Jin-Long Chan , Yuan-bao Chen , Chang-En Sun
IPC: H01H13/86 , H01H13/705 , H01H13/06
Abstract: A keyboard covering film including a fabric layer, a transparent layer and a mask layer is disclosed. The transparent layer is disposed on an upper surface of the fabric layer. The mask layer is disposed on a lower surface of the fabric layer. The transparent layer and the fabric layer are treated by a hot pressing process to form a number of keycap receiving sections. The keycap receiving sections, the fabric layer and the mask layer are located on the same side of the transparent layer. The fabric layer and the mask layer have hollow patterns within the keycap receiving sections, wherein the hollow patterns are formed by removing a portion of the fabric layer and the mask layer.
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