公开(公告)号：US11764004B2

公开(公告)日：2023-09-19

申请号：US17234808

申请日：2021-04-20

Applicant: DARFON ELECTRONICS CORP.

Inventor： Heng-Yi Huang ,  Hsin-Cheng Ho ,  Yuan-Bao Chen

IPC: H01H13/02 ,  H01H13/14 ,  H01H13/04 ,  H01H13/52

CPC classification number: H01H13/023 ,  H01H13/04 ,  H01H13/14 ,  H01H13/52

Abstract: An illuminated keyswitch structure 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 sidewall of the through hole is opaque. 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.

公开(公告)号：US11740706B2

公开(公告)日：2023-08-29

申请号：US17316737

申请日：2021-05-11

Applicant: DARFON ELECTRONICS CORP.

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

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

CPC classification number: G06F3/0213 ,  G06F3/0446 ,  H03K17/9622 ,  H03K2217/9607

Abstract: A keyboard touch electrode module includes a plurality of same electrode matrices, which are arranged along a lengthwise direction and a widthwise direction and formed by a plurality of series of first electrodes and a plurality of series of second electrodes which interlace with each other. Adjacent two of the electrode matrices in the widthwise direction are mis-aligned. The electrode matrices thereon define a plurality of key projection areas, each of which covers a same key-face electrode pattern. A touch keyboard includes a base, a plurality of keycaps, a plurality of supporting structures connected to and between the base and the keycaps, and the keyboard touch electrode module disposed between the base and the keycaps. The keyboard touch electrode module can senses a non-pressing movement on the keycaps. The keycap can move up and down relative to the base and the keyboard touch electrode module through the corresponding supporting structure.

公开(公告)号：US20230260720A1

公开(公告)日：2023-08-17

申请号：US18136883

申请日：2023-04-20

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

Inventor： Shih-Yung Ku ,  Wen-Ming Hsu

IPC: H01H13/02 ,  G06F3/02 ,  F21V11/00 ,  H01H13/14 ,  H01H13/20

CPC classification number: H01H13/023 ,  G06F3/0202 ,  F21V11/00 ,  H01H13/14 ,  H01H13/20 ,  F21Y2113/13

Abstract: An illuminated keyswitch structure includes a base plate, a keycap, and a light-emitting die package. The keycap is movably disposed above the base plate in a vertical direction. The light-emitting die package is disposed under the keycap and includes a plurality of light-emitting dies. The plurality of light-emitting dies are monochromatic light-emitting dies. Therein, among the plurality of light-emitting dies, three light-emitting dies that are adjacently arranged in an arrangement direction perpendicular to the vertical direction emit light of three different colors. The arrangement direction is respectively parallel to along side of each of the three adjacent light-emitting dies.

公开(公告)号：US11710464B2

公开(公告)日：2023-07-25

申请号：US17584407

申请日：2022-01-26

Applicant: DARFON ELECTRONICS CORP.

Inventor： Yen-Fu Chou

IPC: G09G3/34 ,  H05B45/00 ,  G02F1/13357 ,  H05B47/165

CPC classification number: G09G3/3426 ,  G02F1/133603 ,  G02F1/133606 ,  G02F1/133611 ,  H05B45/00 ,  H05B47/165

Abstract: A backlight apparatus includes a circuit board, a control board, and a connection cable connecting the above components. A first light source driver and a second light source driver are disposed on the circuit board and are electrically connected to a plurality of first light sources and a plurality of second light sources respectively. A connector is disposed on the circuit board. The first and second light source drivers are individually electrically coupled in series to the connector. The control board outputs electrical power, a first data stream, and a second data stream. The first light source driver controls the first light sources to light individually according to the first data stream. The second light source driver controls the second light sources to light individually according to the second data stream. Thereby, the circuit board can control the operation of the light sources individually.

公开(公告)号：US20230197374A1

公开(公告)日：2023-06-22

申请号：US18081702

申请日：2022-12-15

Applicant: DARFON ELECTRONICS CORP.

Inventor： Chao-Yu Chen

IPC: H01H13/83 ,  F21V8/00

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.

公开(公告)号：US20230197373A1

公开(公告)日：2023-06-22

申请号：US17989703

申请日：2022-11-18

Applicant: DARFON ELECTRONICS CORP.

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

IPC: H01H13/83 ,  H01H13/7073

CPC classification number: H01H13/83 ,  H01H13/7073

Abstract: A keyswitch structure includes a lift mechanism and a keycap. Two supports of the lift mechanism support the keycap. There can be a spring structure connecting the two supports for driving the two supports to lift the keycap. The lift mechanism defines a central space extending through the whole lift mechanism in a vertical direction. The spring structure does not enter the central space. The two supports abut against and constrain each other through corresponding structures, to mutually rotate with respect to a rotation axis. The keyswitch structure can include a switch. The switch includes an intermediate support, detachably abutting downward against the lift mechanism or the keycap, and a resilient part, detachably abutting downward against the intermediate support. In the process of pressing the keycap, the intermediate support is separated from the lift mechanism or the keycap, so that the contact force of the switch can be maintained constant.

公开(公告)号：US20230129863A1

公开(公告)日：2023-04-27

申请号：US17894254

申请日：2022-08-24

Applicant: Darfon Electronics Corp.

Inventor： Yu Chun HSIEH ,  Chen YANG ,  Chia Hung LIU ,  Shao Lun HSIAO

IPC: H01H13/14 ,  G06F3/02 ,  G06F1/3296 ,  H01H13/70

Abstract: A sensing keyswitch including a key body, a key-sensing switch and an enabling switch is provided. The key body includes a key top, and a key driver and an enabler which can move with the key top in the same keystroke cycle. The key-sensing switch electrically connected to a key circuit is in a disabled mode to save power and cannot sense the change of the sensing intensity caused by the movement of the driver. The enabling switch is electrically connected to an enabling circuit, wherein when the enabling switch is triggered by the enabler, the enabling switch outputs an enabling signal through the enabling circuit for enabling the key-sensing switch to enter an enabled mode, so that the key-sensing switch can sense the change of the sensing intensity caused by the movement of the key driver to trigger a key signal.

公开(公告)号：US20230097110A1

公开(公告)日：2023-03-30

申请号：US18060070

申请日：2022-11-30

Applicant: Darfon Electronics Corp.

Inventor： Chen YANG ,  Chia-Hung LIU ,  Yu-Chun HSIEH

IPC: H01H13/20 ,  H01H13/04 ,  H01H13/70 ,  H01H13/14

Abstract: A keyswitch structure includes a base, a cap disposed corresponding to the base, a restoring member disposed between the base and the cap, and a tactile adjustment unit. The cap has a cam portion movable relative to the base. The restoring member is configured to provide a restoring force to enable the cam portion to move away from the base. The tactile adjustment unit is disposed corresponding to the cam portion and includes a holder and a tactile feedback member mounted on the holder. The holder is movable relative to the base to change a position of the tactile feedback member relative to the cam portion, so as to change a pressing force required for the cam portion to move toward the base.

公开(公告)号：US20230067471A1

公开(公告)日：2023-03-02

申请号：US17873128

申请日：2022-07-25

Applicant: DARFON ELECTRONICS CORP.

Inventor： Chao-Yu Chen

IPC: H01H13/83 ,  F21V8/00

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.

公开(公告)号：US20220412541A1

公开(公告)日：2022-12-29

申请号：US17897211

申请日：2022-08-28

Applicant: DARFON ELECTRONICS CORP.

Inventor： Hsin-Cheng Ho ,  Heng-Yi Huang ,  Yi-Tung Lo

IPC: F21V19/00 ,  H05K1/11

Abstract: An illuminating circuit structure includes a film sheet, an illuminant, a printed baseline layer, and a printed pad layer. The printed baseline layer includes a first baseline segment and a second baseline segment printed on the film sheet, while the printed pad layer includes a first bar pad and a second bar pad. For a first baseline head of the first baseline layer and a first pad head of the first bar pad, one of which extends along a first direction and the other of which extends along a second direction not parallel to the first direction. Therefore, the first baseline segment and the first bar pad achieve electrical connection despite of an existed print shifting. Similarly, a second baseline head of the second baseline layer and a second pad head of the second bar pad also can achieve electrical connection despite of an existed print shifting.