公开(公告)号：US20240134112A1

公开(公告)日：2024-04-25

申请号：US18376818

申请日：2023-10-03

Applicant: DARFON ELECTRONICS CORP.

Inventor： Chao-Yu Chen ,  Heng-Yi Huang

IPC: F21V8/00 ,  H01H13/02

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.

公开(公告)号：US20240105401A1

公开(公告)日：2024-03-28

申请号：US18223527

申请日：2023-07-18

Applicant: DARFON ELECTRONICS CORP.

Inventor： Yu-Chun Hsieh ,  Ling-Hsi Chao ,  Shao-Lun Hsiao ,  Chen Yang

IPC: H01H13/14 ,  H01H13/04 ,  H01H13/20

CPC classification number: H01H13/14 ,  H01H13/04 ,  H01H13/20

Abstract: A keyswitch structure includes a casing, a first support, a second support, and a pressing stem. The casing forms an accommodating space and an opening communicating with the accommodating space. The first and second supports are disposed in the accommodating space and are directly and rotatably connected with the casing; the supports are also pivotally connected with each other. The pressing stem extends into the accommodating space to be rotatably connected with the first and second supports and protrudes from the casing through the opening. The pressing stem is movable parallel to a vertical direction relative to the casing through the first and second supports. A motion of the pressing stem in the vertical direction has a top dead center and a bottom dead center. When the pressing stem is at the top dead center and the bottom dead center, it does not touch the casing in the vertical direction.

公开(公告)号：US20240096568A1

公开(公告)日：2024-03-21

申请号：US18512073

申请日：2023-11-17

Applicant: DARFON ELECTRONICS CORP.

Inventor： Heng-Yi Huang ,  Hsin-Cheng Ho

IPC: H01H13/83 ,  F21V8/00 ,  H01H13/02 ,  H01H13/705

CPC classification number: H01H13/83 ,  G02B6/0055 ,  H01H13/023 ,  H01H13/705 ,  H01H3/125

Abstract: A backlight module configured to illuminate at least one key cap of a lighting keyboard. The backlight module comprises a lighting board, a light emitting unit and a light guide plate. The lighting board has a first reflective layer, a lighting circuit and two aligned micro-structure regions, all three at least partially being layered in parallel with each other. The two micro-structure regions reflect lights and are separated by the lighting circuit. The light emitting unit includes plural color dies connecting electrically with the lighting circuit. The light guide plate has a light guide hole for accommodating the light emitting unit. The color dies of the light emitting unit are aligned linearly, while the two micro-structure regions of the lighting board are aligned in perpendicular to the linearly-aligned color dies, with the micro-structure regions disposed at opposite sides the light emitting unit.

公开(公告)号：US11860398B2

公开(公告)日：2024-01-02

申请号：US18296244

申请日：2023-04-05

Applicant: DARFON ELECTRONICS CORP.

Inventor： Chao-Yu Chen

IPC: F21V8/00

CPC classification number: G02B6/0045 ,  G02B6/0068

Abstract: A backlight apparatus used in an illuminated keyboard includes a light-guiding plate, a circuit board and a plurality of light-emitting devices all electrically bonded on the circuit board. The light-guiding plate has a plurality of through holes which each corresponds to one of the light-emitting devices. The circuit board is disposed on a back face of the light-guiding plate such that each light-emitting device is disposed within the corresponding through hole, and that a light-emitting side face of each light-emitting device faces a light incident surface of the corresponding through hole. A specific through hole of the through holes has an optical adjustment surface on the light incident surface thereof, and the optical adjustment surface has a curved surface central axis coaxial with a central optical axis of the corresponding light-emitting device.

公开(公告)号：US20230420199A1

公开(公告)日：2023-12-28

申请号：US18367420

申请日：2023-09-12

Applicant: DARFON ELECTRONICS CORP.

Inventor： Ying-Lan Liu ,  Hsin-Cheng Ho ,  Heng-Yi Huang

IPC: H01H13/83 ,  F21V8/00

CPC classification number: H01H13/83 ,  G02B6/0068 ,  G02B6/0055 ,  G02B6/0021 ,  G02B6/0031 ,  G02B6/0051 ,  H01H2219/056 ,  H01H2219/06 ,  H01H2219/048 ,  H01H2219/04

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 hole for accommodating the light emitting unit. The lighting board has a 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 overlapping with the pair of pads. One of the pair of pads has a first branch and a first hollow area behind the first branch, the other one of the pair of pads has a second branch and a second hollow area behind the second branch, and the light emitting unit is disposed between the first hollow area and the second hollow area.

公开(公告)号：US20230420197A1

公开(公告)日：2023-12-28

申请号：US18242013

申请日：2023-09-05

Applicant: DARFON ELECTRONICS (HUAIAN) CO., LTD. ,  DARFON ELECTRONICS CORP.

Inventor： Shih-Yung Ku ,  Wen-Ming Hsu

IPC: H01H13/02

CPC classification number: H01H13/023 ,  H01H2013/026 ,  H01H2219/04 ,  H01H2219/048

Abstract: An illuminated keyswitch structure includes a base plate, a keycap, and a light-emitting die package. The light-emitting die package is disposed to illuminate the keycap through the base plate. The light-emitting die package comprises a warm color temperature light-emitting die and a cold color temperature light-emitting die, and the light-emitting dis package extends along an arrangement direction. Each of the two light-emitting dies has a short side arranged adjacent to each other, with a long side of each of the two light-emitting dies facing a same direction and configured proximate to each other. A gap between the two adjacent short sides of the two light-emitting dies is not greater than either one of the two adjacent short sides of the two light-emitting dies.

公开(公告)号：US11855624B2

公开(公告)日：2023-12-26

申请号：US17812785

申请日：2022-07-15

Applicant: Darfon Electronics Corp.

Inventor： Chen Yang ,  Yu-Chun Hsieh ,  Li-Te Chang ,  Po-Yueh Chou

IPC: H01H13/14 ,  H03K17/968 ,  H01H13/705

CPC classification number: H03K17/968 ,  H01H13/14 ,  H01H13/705 ,  H03K2217/9653

Abstract: An optical keyswitch includes a keycap, a support mechanism, and a switch module. The support mechanism is disposed below the keycap and configured to support the keycap moving upward and downward, the support mechanism comprising a first frame and a second frame, the first frame having a sliding end. The switch module includes a circuit board, an emitter, and a receiver, the emitter and the receiver are electrically connected to the circuit board, and the emitter emitting an optical signal to the receiver. When the keycap is pressed, the first frame is driven by the keycap to slide substantially parallel to the circuit board and block the optical signal with the sliding end, so the switch module is triggered to generate a triggering signal.

公开(公告)号：US20230402796A1

公开(公告)日：2023-12-14

申请号：US18197710

申请日：2023-05-15

Applicant: DARFON ELECTRONICS CORP.

Inventor： Cheng-Min Su ,  Chien-Chang Chen

IPC: H01R13/648 ,  H01R13/70

CPC classification number: H01R13/6485 ,  H01R13/7175 ,  H01R13/701

Abstract: A USB device includes a base, a circuit board disposed on the base and having front-end and rear-end portions and a ground circuitry, an upper cover, solder points, a switch and a button mount. The rear-end portion is used for inserting into a connection port of a computer terminal. The upper cover covers the front-end portion and has an opening. The solder points are formed on the front-end portion and coupled to the ground circuitry. The switch having a metal cover is soldered to the solder points for controlling wireless connection between the computer terminal and an external device. The button mount is movably disposed through the opening and sleeves the front-end portion for triggering the switch. An electrostatic discharge entering from the opening can pass through a first guide hole of the button mount and is conducted to the ground circuitry via the metal cover and the solder point.

公开(公告)号：US20230341607A1

公开(公告)日：2023-10-26

申请号：US18134575

申请日：2023-04-14

Applicant: DARFON ELECTRONICS CORP.

Inventor： Shih-Yung Ku ,  Hsin-Cheng Ho

IPC: F21V8/00

CPC classification number: G02B6/0043 ,  G02B6/0088

Abstract: A keyswitch backlight structure includes a light-guiding layer, a reflective layer, and a transparent adhesive layer. The light-guiding layer has a bottom surface, a light-emitting surface opposite to the bottom surface, and a surface microstructure formed on the light-emitting surface. The reflective layer is disposed opposite to the bottom surface. The transparent adhesive layer is closely attached to and between the reflective layer and the light-guiding layer corresponding to the surface microstructure. An illuminated keyswitch structure includes base plate, a keycap, a supporting mechanism, and the above keyswitch backlight structure. The keyswitch backlight structure and the base plate are stacked. The supporting mechanism is connected to and between the base plate and the keycap for lifting the keycap relative to the base plate. Light entering the light-guiding layer exits the light-guiding layer through the light-emitting surface to illuminate a transparent indication area of the keycap.

公开(公告)号：US20230314690A1

公开(公告)日：2023-10-05

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 ,  H01H13/705 ,  G02B6/0055 ,  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.