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    Lighting keyboard, backlight module and lighting substrate
    2.
    发明授权
    Lighting keyboard, backlight module and lighting substrate 有权

    公开(公告)号：US11977250B2

    公开(公告)日：2024-05-07

    申请号：US18128235

    申请日：2023-03-30

    Applicant: DARFON ELECTRONICS CORP.

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

    IPC: F21V8/00

    CPC classification number: G02B6/0051

    Abstract: A lighting keyboard includes a backlight module and at least one keyswitch. The backlight module includes a lighting substrate and a protruding structure. The lighting substrate includes two non-intersecting traces and a light emitting unit. The light emitting unit is connected between the two non-intersecting traces. A position of the protruding structure corresponds to a position of the light emitting unit and the protruding structure is located between the two non-intersecting traces. The at least one keyswitch is disposed on the backlight module.

    LIGHTING KEYBOARD, BACKLIGHT MODULE AND LIGHTING BOARD
    3.
    发明公开
    LIGHTING KEYBOARD, BACKLIGHT MODULE AND LIGHTING BOARD 审中-公开

    公开(公告)号：US20230377816A1

    公开(公告)日：2023-11-23

    申请号：US18131885

    申请日：2023-04-07

    Applicant: DARFON ELECTRONICS CORP.

    Inventor： Ying-Lan Liu ,  Heng-Yi Huang

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

    CPC classification number: H01H13/83 ,  H01H13/705 ,  G02B6/0021 ,  G02B6/0055 ,  H01H2219/04 ,  H01H2219/06

    Abstract: A lighting keyboard includes a backlight module and a keyswitch. The backlight module includes two lighting units, a light guide panel, a lighting board and a micro-structure layer. The light guide panel includes two panel holes to accommodate the two lighting units. The light guide panel further includes at least one slot located between the two lighting units. The lighting board is disposed in parallel to the light guide panel, and the lighting board includes at least one pair of non-parallel main traces in electrical connection with the two lighting units. The micro-structure layer is disposed in parallel to the light guide panel, and the micro-structure layer includes at least one micro-structure region. The at least one micro-structure region is disposed between the two lighting units, and meanwhile the at least one slot of the light guide panel is at least partially located within the at least one micro-structure region.

    LIGHTING KEYBOARD AND BACKLIGHT MODULE THEREOF
    4.
    发明公开
    LIGHTING KEYBOARD AND BACKLIGHT MODULE THEREOF 审中-公开

    公开(公告)号：US20230360869A1

    公开(公告)日：2023-11-09

    申请号：US18221371

    申请日：2023-07-12

    Applicant: DARFON ELECTRONICS CORP.

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

    IPC: H01H13/83 ,  H01H13/705

    CPC classification number: H01H13/83 ,  H01H13/705 ,  H01H2219/04 ,  H01H2219/056 ,  H01H2219/06

    Abstract: A backlight module is configured to illuminate at least one keycap. The backlight module includes a shielding sheet, a lighting board and a protrusion structure. The lighting board includes an illuminant unit and a pair of footprints respectively connecting the illuminant unit. Each of the footprints includes at least one hollow area, and the at least one hollow area overlaps at least a portion of the illuminant unit. The protrusion structure is formed at the shielding sheet. The protrusion structure protrudes towards the light board and at least partially overlaps the pair of footprints, so that the backlight module diffuses light of the illuminant between the protrusion structure and the footprints.

    LIGHTING KEYBOARD, BACKLIGHT MODULE AND LIGHTING SUBSTRATE
    5.
    发明公开
    LIGHTING KEYBOARD, BACKLIGHT MODULE AND LIGHTING SUBSTRATE 审中-公开

    公开(公告)号：US20230314691A1

    公开(公告)日：2023-10-05

    申请号：US18128235

    申请日：2023-03-30

    Applicant: DARFON ELECTRONICS CORP.

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

    IPC: F21V8/00

    CPC classification number: G02B6/0051

    Abstract: A lighting keyboard includes a backlight module and at least one keyswitch. The backlight module includes a lighting substrate and a protruding structure. The lighting substrate includes two non-intersecting traces and a light emitting unit. The light emitting unit is connected between the two non-intersecting traces. A position of the protruding structure corresponds to a position of the light emitting unit and the protruding structure is located between the two non-intersecting traces. The at least one keyswitch is disposed on the backlight module.

    LIGHTING KEYBOARD AND BACKLIGHT MODULE THEREOF
    7.
    发明公开
    LIGHTING KEYBOARD AND BACKLIGHT MODULE THEREOF 审中-公开

    公开(公告)号：US20230358944A1

    公开(公告)日：2023-11-09

    申请号：US18221367

    申请日：2023-07-12

    Applicant: DARFON ELECTRONICS CORP.

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

    IPC: F21V8/00 ,  G06F3/02

    CPC classification number: G02B6/0055 ,  G02B6/009 ,  G06F3/0202

    Abstract: A backlight module includes a lighting board, a light guide panel, a shielding sheet, and a protrusion structure. The lighting board includes two non-intersected traces, a plurality of microstructure regions and at least one illuminant unit. The illuminant unit is connected between the microstructure regions. The microstructure regions do not overlap with the two non-intersected traces. The light guide panel is disposed above the lighting board, and the shielding sheet is disposed above the light guide panel. The protrusion structure is formed on the shielding sheet, protrudes towards the lighting board, and is between the microstructure regions. The protrusion structure diffuses light of the illuminant unit at an early section of its light path to enter into the light guide panel for lateral transmission. The plural microstructure regions reflect and recycle the light at a following section of the light path to jointly enhance the uniformity of illuminating a keycap.

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