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公开(公告)号：US09269509B2
公开(公告)日：2016-02-23
申请号：US14830718
申请日：2015-08-19
Applicant: DARFON ELECTRONICS CORP.
Inventor： Hsin-Cheng Ho , Liang-Yu Yao
CPC classification number: H01H13/023 , G02B6/0055 , H01H3/125 , H01H13/16 , H01H2219/044 , H01H2219/06
Abstract: A backlight module is used in a lighting keyboard. The backlight module includes a light guiding plate and a masking. The masking is disposed on the light guiding plate. The masking includes a support layer, a cover layer and a reflective layer. The support layer includes a first surface and a second surface opposite to the first surface. The cover layer is disposed on the first surface. The cover layer includes a first opening. The reflective layer is disposed on the second surface and faces the light guiding plate for reflecting light emitted from the light guiding plate, so as to enhance lighting efficiency on the first opening. The reflective layer includes a second opening. A shape and a position of the second opening are respectively corresponding to a shape and a position of the first opening.
Abstract translation: 背光模块用于照明键盘。 背光模块包括导光板和掩模。 掩模设置在导光板上。 掩模包括支撑层，覆盖层和反射层。 支撑层包括第一表面和与第一表面相对的第二表面。 覆盖层设置在第一表面上。 覆盖层包括第一开口。 反射层设置在第二表面上并面向导光板，用于反射从导光板发射的光，以提高第一开口的照明效率。 反射层包括第二开口。 第二开口的形状和位置分别对应于第一开口的形状和位置。
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32.发明授权
公开(公告)号：US09182533B2
公开(公告)日：2015-11-10
申请号：US14066678
申请日：2013-10-29
Inventor： Liang-Yu Yao , Hsin-Cheng Ho , Yen-Chang Chen
CPC classification number: G02B6/0065 , G02B6/0036 , G02B6/0055 , G06F3/0202 , G06F3/023 , H01H13/83 , H01H2219/044 , H01H2219/06 , H01H2219/062 , H01H2229/002 , H01H2229/012
Abstract: A light guide plate structure includes a light guide plate, a first medium layer, a micro structure, a second medium layer, and a reflection layer. The light guide plate has a light exit surface and a bottom surface opposite to the light exit surface. The first medium layer is formed on the light exit surface. The micro structure is formed on the bottom surface for redirecting light inside the light guide plate to emit from the light exit surface. The second medium layer is formed on the micro structure. The refractive index of the first medium layer and the refractive index of the second medium layer are less than the refractive index of the light guide plate but greater than the refractive index of air. The reflection layer is formed on the second medium layer for reflecting light inside the light guide plate to emit from the light exit surface.
Abstract translation: 导光板结构包括导光板，第一介质层，微结构，第二介质层和反射层。 导光板具有光出射面和与光射出面相反的底面。 第一介质层形成在光出射面上。 微结构形成在底表面上，用于重新引导导光板内的光从光出射表面发射。 第二介质层形成在微结构上。 第一介质层的折射率和第二介质层的折射率小于导光板的折射率，但大于空气的折射率。 反射层形成在第二介质层上，用于反射导光板内的光从光出射面发射。
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公开(公告)号：US20250062082A1
公开(公告)日：2025-02-20
申请号：US18804146
申请日：2024-08-14
Applicant: DARFON ELECTRONICS CORP.
Inventor： Heng-Yi Huang , Chao-Yu Chen , Hsin-Cheng Ho
Abstract: An illuminated touchpad includes a panel, a light guide layer and a circuit board. The panel includes a first light transmitting region and a second light transmitting region. The light guide layer includes a first light guide region and a second light guide region. The circuit board includes a controller, a touch module, a first light source and a second light source. The controller controls the first light source to emit light, such that the first light guide region guides the light emitted by the first light source to the first light transmitting region. When the touch module senses that the first light transmitting region is touched, the controller controls the second light source to emit light, such that the second light guide region guides the light emitted by the second light source to the second light transmitting region.
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公开(公告)号：US12204135B2
公开(公告)日：2025-01-21
申请号：US18592794
申请日：2024-03-01
Applicant: Darfon Electronics Corp.
Inventor： Heng-Yi Huang , Hsin-Cheng Ho , Po-Yueh Chou
IPC: F21V8/00 , H01H13/705 , H01H13/83
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.
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公开(公告)号：US11940646B2
公开(公告)日：2024-03-26
申请号：US18134575
申请日：2023-04-14
Applicant: DARFON ELECTRONICS CORP.
Inventor： Shih-Yung Ku , Hsin-Cheng Ho
IPC: F21V8/00 , G02B1/11 , G06F1/16 , G06F3/02 , H01H13/02 , H01H13/14 , H01H13/704 , H01H13/7057 , H01H13/7065
CPC classification number: G02B6/0043 , G02B1/11 , G02B6/0036 , G02B6/0055 , G02B6/0088 , G06F3/0202 , H01H13/023 , H01H13/14 , H01H13/704 , H01H13/7057 , H01H13/7065 , G06F1/1616
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.
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公开(公告)号：US10720289B1
公开(公告)日：2020-07-21
申请号：US16553145
申请日：2019-08-27
Applicant: DARFON ELECTRONICS CORP.
Inventor： Hsin-Cheng Ho , Heng-Yi Huang , Tsai-Yu Chen , Hung-Chuan Cheng , Yang-Cheng Wu
IPC: H01H13/83 , H01H13/88 , H01H3/12 , H01H13/7065
Abstract: A light emitting keyboard includes a bottom board, keyswitches, and a lighting board. The lighting board is disposed between the bottom board and the keyswitches or under the bottom board and includes a flexible substrate having a first hole, multiple-light emitting diodes corresponding to the keyswitches, first and second silver-paste circuit layers formed on upper and lower surfaces of the flexible substrate respectively, a via pillar formed in the first hole to be coupled to the first and second silver-paste circuit layers, a copper layer plated on the first and second silver-paste circuit layers, and a first protection layer coated on the copper layer and having second holes. Each multiple-light emitting diode is disposed on the copper layer plated on the first silver-paste circuit layer through the corresponding second hole to be coupled to the first silver-paste circuit layer.
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公开(公告)号：US10276327B2
公开(公告)日：2019-04-30
申请号：US15611079
申请日：2017-06-01
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chih-Hung Chen , Hsin-Cheng Ho
Abstract: A luminous keyswitch includes a keycap having a light-transparent portion, a baseplate, an up-down mechanism with two ends respectively moveably connected to the keycap and the baseplate, a function sheet disposed on or under the baseplate, and a light source disposed on the function sheet within a vertical projection of the keycap and connected by a copper wire to provide a light illuminating the light-transparent portion. The function sheet includes a flexible upper circuit layer having a first contact point, a flexible spacer layer having a hole, and a flexible lower circuit layer having a second copper contact point, a third copper contact point, a first copper wire connected to the second copper contact point, and a second copper wire connected to the third copper contact point. When the keycap is pressed, the first contact point passes through the hole to electrically connect the second and third copper contact points.
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公开(公告)号：US08950881B2
公开(公告)日：2015-02-10
申请号：US14029811
申请日：2013-09-18
Inventor： Yen-Chang Chen , Liang-Yu Yao , Hsin-Cheng Ho
CPC classification number: H01H13/83 , H01H3/125 , H01H2219/06 , H01H2219/062 , H01H2219/064
Abstract: A backlight module includes a light guide plate, a light source, a light shielding sheet, a light reflecting sheet and a light shielding member. The light guide plate has a hole formed thereon and the hole has a side wall. The light source is disposed neighboring to the light guide plate and used for emitting light into the light guide plate. The light shielding sheet is disposed on the light guide plate. The light reflecting sheet is disposed below the light guide plate. The light shielding member is disposed in the hole and covers the side wall of the hole, so as to block the light guided by the light guide plate from being emitted out of the hole.
Abstract translation: 背光模块包括导光板，光源，遮光片，光反射片和遮光构件。 导光板具有形成在其上的孔，该孔具有侧壁。 光源设置成与导光板相邻，用于将光发射到导光板中。 遮光片设置在导光板上。 光反射片设置在导光板的下方。 遮光部件设置在孔内并覆盖孔的侧壁，以阻挡由导光板引导的光从孔中射出。
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公开(公告)号：US20140334125A1
公开(公告)日：2014-11-13
申请号：US14272515
申请日：2014-05-08
Inventor： Liang-Yu Yao , Hsin-Cheng Ho , Yu-Ching Ting
CPC classification number: G02B6/0055 , G02B6/0021 , G02B6/0083 , H01H13/83 , H01H2219/044 , H01H2219/062 , Y10T29/49002 , Y10T29/49117
Abstract: A backlit keyboard includes a keyboard module having a plurality of key units and a light guide module including a light guide plate, a metal layer, and an insulation layer. The light guide plate has a light-exit surface and a bottom surface. The metal layer has an upper surface and a lower surface, wherein the upper surface is attached to the bottom surface of the light guide plate. When light is incident onto the upper surface of the metal layer, the light will be reflected back into the light guide plate. When electromagnetic wave reaches the lower surface of the metal layer, the metal layer will shield the electromagnetic wave from propagating. The insulation layer substantially covers the lower surface of the metal layer, wherein at least one ground window is formed in the insulation layer to expose the metal layer.
Abstract translation: 背光键盘包括具有多个键单元的键盘模块和包括导光板，金属层和绝缘层的导光模块。 导光板具有光出射面和底面。 金属层具有上表面和下表面，其中上表面附着到导光板的底表面。 当光入射到金属层的上表面上时，光将被反射回导光板。 当电磁波到达金属层的下表面时，金属层将屏蔽电磁波传播。 绝缘层基本上覆盖金属层的下表面，其中至少一个接地窗形成在绝缘层中以暴露金属层。
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公开(公告)号：US20140160722A1
公开(公告)日：2014-06-12
申请号：US14181737
申请日：2014-02-17
Applicant: DARFON ELECTRONICS CORP.
Inventor： Hsin-Cheng Ho , Liang-Yu Yao
IPC: F21V8/00
CPC classification number: H01H13/023 , G02B6/0055 , H01H3/125 , H01H13/16 , H01H2219/044 , H01H2219/06
Abstract: A backlight module is used in a lighting keyboard. The backlight module includes a light guiding plate and a masking. The masking is disposed on the light guiding plate. The masking includes a support layer, a cover layer and a reflective layer. The support layer includes a first surface and a second surface opposite to the first surface. The cover layer is disposed on the first surface. The cover layer includes a first opening. The reflective layer is disposed on the second surface and faces the light guiding plate for reflecting light emitted from the light guiding plate, so as to enhance lighting efficiency on the first opening. The reflective layer includes a second opening. A shape and a position of the second opening are respectively corresponding to a shape and a position of the first opening.
Abstract translation: 背光模块用于照明键盘。 背光模块包括导光板和掩模。 掩模设置在导光板上。 掩模包括支撑层，覆盖层和反射层。 支撑层包括第一表面和与第一表面相对的第二表面。 覆盖层设置在第一表面上。 覆盖层包括第一开口。 反射层设置在第二表面上并面向导光板，用于反射从导光板发射的光，以提高第一开口的照明效率。 反射层包括第二开口。 第二开口的形状和位置分别对应于第一开口的形状和位置。
