公开(公告)号：US11770123B2

公开(公告)日：2023-09-26

申请号：US17383678

申请日：2021-07-23

Applicant: Darfon Electronics Corp.

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

IPC: H01H3/12 ,  H03K17/968 ,  H01H13/705 ,  H01H13/14

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：US20210351774A1

公开(公告)日：2021-11-11

申请号：US17308990

申请日：2021-05-05

Applicant: DARFON ELECTRONICS CORP.

Inventor： Wei-Yan You ,  Chin-Lung Chan ,  Po-Yueh Chou

IPC: H03K17/96 ,  G06F3/044 ,  G06F3/02

Abstract: A touch keyboard includes a keyboard touch electrode module and keyswitches arranged along lengthwise and widthwise directions. The keyboard touch electrode module includes plural key electrode matrixes one-to-one corresponding to plural key projection areas for the keyswitches. The key electrode matrixes are arranged along the lengthwise direction and the widthwise direction. At least two key electrode matrixes unaligned in the widthwise direction are identical to each other. The key electrode matrix includes plural electrodes arranged alternately at an electrode interval. A size of the electrode in the widthwise direction is defined by a function of the electrode interval, a key pitch between two widthwise-adjacent ones of the key projection areas, and an electrode row number covered within the key pitch.

公开(公告)号：US12154729B2

公开(公告)日：2024-11-26

申请号：US18398285

申请日：2023-12-28

Applicant: Darfon Electronics Corp.

Inventor： Yen-Chang Chen ,  Po-Yueh Chou

IPC: H01H13/00 ,  F21V8/00 ,  G06F3/02 ,  H01H13/02

Abstract: A backlight module for a lighting keyboard including at least two heat-dissipating keys comprises a reflective layer, a light guide panel and a shielding sheet and has at least two penetration channels. The reflective layer, the light guide panel and the shielding sheet are stacked up and down. The penetration channels symmetrically correspond to the heat-dissipating keys respectively and penetrate the reflective layer, the light guide panel and the shielding sheet. The penetration channels are respectively provided with one light-reducing pattern at their periphery for blocking light. At least two diffusion patterns are arranged adjacent to the light-reducing patterns for guiding light to illuminate the heat-dissipating keys. The light-reducing patterns and the diffusion patterns form at least two heat-reducing optical pattern groups respectively. The heat-reducing optical pattern groups respectively corresponding to the heat-dissipating keys have identical patterns.

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.

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.

公开(公告)号：US11327573B2

公开(公告)日：2022-05-10

申请号：US17308245

申请日：2021-05-05

Applicant: Darfon Electronics Corp.

Inventor： Chih-Hsiang Chiang ,  Chen Yang ,  Yu-Chun Hsieh ,  Po-Yueh Chou

IPC: G06F3/02 ,  H01H13/7073 ,  H01H13/7065 ,  G06F3/01

Abstract: A keyboard includes a cover plate having a plurality of first keyholes, an adjustment mechanism disposed under the cover plate, and a plurality of keyswitches. The adjustment mechanism includes an adjustment frame and a plurality of adjustment portions. The adjustment frame includes a plurality of ribs defining a plurality of second keyholes corresponding to the plurality of first keyholes, respectively. Each of the adjustment portions is proximate to a corresponding one of the second keyholes. Each of the keyswitches includes a tactile feedback member and is located in corresponding first and second keyholes, so that the adjustment portion corresponds to the tactile feedback member of its corresponding keyswitch. The adjustment frame is movable relative to the cover plate, so that each of the adjustment portions drives a portion of the tactile feedback member to move, to change tactile feedback of the keyswitches.