CN102832068A - Key device and light guide member layer - Google Patents

Key device and light guide member layer Download PDF

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Publication number
CN102832068A
CN102832068A CN2012103037757A CN201210303775A CN102832068A CN 102832068 A CN102832068 A CN 102832068A CN 2012103037757 A CN2012103037757 A CN 2012103037757A CN 201210303775 A CN201210303775 A CN 201210303775A CN 102832068 A CN102832068 A CN 102832068A
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China
Prior art keywords
layer
optical film
key
light guide
light
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CN2012103037757A
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Chinese (zh)
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欧阳国祥
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鸿富锦精密工业(深圳)有限公司
鸿海精密工业股份有限公司
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Priority to CN2012103037757A priority Critical patent/CN102832068A/en
Publication of CN102832068A publication Critical patent/CN102832068A/en

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Abstract

The invention relates to a light guide membrane layer for a key device. The light guide membrane layer comprises an optical membrane layer and a rubber layer arranged on one side of the optical membrane layer and formed with the optical membrane layer to a whole, wherein at least one accommodating region is formed on the rubber layer. In addition, the invention also provides a key device which comprises a key layer, a metal dome switch layer and a light guide membrane layer arranged between the key layer and the metal dome switch layer, the light guide membrane layer comprises the optical membrane layer and the rubber formed with the optical membrane layer to a whole, and at least one accommodating region is formed on the rubber layer. According to the invention, the optical membrane layer and the rubber layer are formed into a whole, so that the thickness of the whole key structure is lowered; and meanwhile the accommodating region is formed on the rubber layer, a larger accommodating space is gained for elements in the accommodating region, mutual influences of electrical signals between the key and the elements in the accommodating region is avoided, and the production cost can be lowered.

Description

一种按键装置及其导光膜层 One kind of key device and the light guide layer

技术领域 FIELD

[0001 ] 本发明涉及电子产品的按键技术领域,具体涉及一种按键装置及其导光膜层。 [0001] The present invention relates to the technical field of electronic keys products, more particularly to a key device and the light guide layer.

背景技术 Background technique

[0002] 在手机等电子产品的按键设计中,为了使其在黑暗中仍可使用,会对其按键采用照明设置,其一般采用LED作为光源。 [0002] In the key design of electronic products such as mobile phones, in order that it can still be used in the dark, it will use its key illumination setting, which generally use LED as a light source. 为减少LED的数量及降低成本,常采用导光膜的方式来传递以使光线更均匀。 To reduce the number and cost of LED, often to deliver a more uniform light to make by way of the light guide film. 如图I所示,传统的具有导光膜的手机按键10依次包括由上而下层叠设置的按键层11、橡胶层12、导光膜层13、锅仔层(dome) 14、电路板15及设置于电路板上的LED (图未示)。 FIG I, the conventional mobile phone having a light directing film includes a key 10 are sequentially stacked from top to bottom layer 11 of the key rubber layer 12, the light guide layer 13, layer dome (dome) 14, circuit board 15 and disposed in LED (Fig. not shown) on the circuit board. 按键层11包括有若干按键111,橡胶层12采用透明或半透明材料制成,导光膜层13在按键111的下方位置处形成有多个网点区131,LED光源发出的光线经导光膜层13的传导从网点区131处射出并穿过橡胶层12以照亮按键111,锅仔层14包括若干锅仔片141,每一按键111对应一锅仔片141。 Layer 11 comprises a plurality of key buttons 111, the rubber layer 12 is made of transparent or translucent material, the light guide layer 13 has a plurality of outlets 131 formed at a region below the position of the key 111, the light emitted from the LED light source through the light guide film conductive layer 13 and emitted through the outlets from the region 131 of the rubber layer 12 to illuminate the keys 111, Guozi layer 14 includes a plurality of dome 141, 111 each corresponding to a key dome 141.

[0003] 上述结构的按键装置,因其在按键层与导光层之间增加了一橡胶层,这增加了整个按键的厚度,不利于电子产品的薄形化设计。 Key device [0003] The above-described configuration, because the layer between the buttons and the light guiding layer is a rubber layer increases, which increases the thickness of the entire key is not conducive thin design of electronic products.

发明内容 SUMMARY

[0004] 有鉴于此,有必要提供一种按键用的导光膜层,以降低整个按键的厚度、缩小按键所占用的空间,以使其满足电子产品薄形化设计的需求。 [0004] In view of this, it is necessary to provide a light guide layer with one kind of key, in order to reduce the thickness of the entire key, reduce the space occupied by the key, so as to satisfy the thin type electronic product designs.

[0005] 此外,本发明还提供一种利用该导光膜层的按键装置。 [0005] Further, the present invention provides a light guide film layer using the key device.

[0006] 本发明所提供的按键装置用的导光膜层,包括一光学膜层及位于所述光学膜层一侧与所述光学膜层成型于一体的橡胶层,所述橡胶层上形成有至少一容纳区。 [0006] The light guide layer key device according to the present invention is provided with, comprising an optical film and the optical film located on a side of the optical film formed in one of the rubber layer, the rubber layer is formed at least one receiving area.

[0007] 本发明所提供的按键装置,包括按键层、导光膜层及锅仔片层,所述导光膜层设置于所述按键层与锅仔片层之间,所述导光膜层包括一光学膜层及位于所述光学膜层一侧与所述光学膜层成型于一体的橡胶层,所述橡胶层上形成有至少一容纳区。 [0007] The key device of the present invention is provided, comprising a key layer, optical guide layer and the metal dome sheet, the light guiding layer disposed between the layer and the metal dome button sheet, the light guide film a layer comprising the optical film and the optical film is located to the side of the optical film formed in one of the rubber layer, the at least one receiving area is formed on the rubber layer.

[0008] 相对于现有技术,本发明所提供的按键装置的导光膜层通过将光学膜层与橡胶层成型于一体,以降低整个按键结构的厚度;同时将橡胶层与按键周边需安装其他元件的对应位置处做省料处理以形成容纳区,以为该元件争取到更大的容纳空间,避免按键与元件之间电气信号的相互影响,还能降低生产成本。 [0008] The light guide layer with respect to the prior art key device, the present invention is provided by the optical film and the rubber layer are integrally molded in order to reduce the thickness of the entire key structure; while the surrounding rubber layer and the need to install keys at corresponding positions to do other elements to form a receiving area and material processing, that the receiving element to secure a larger space, to avoid the mutual influence of an electric signal between the key and the member, but also reduce production costs.

附图说明 BRIEF DESCRIPTION

[0009] 图I为现有技术中手机的按键结构的剖视图。 [0009] Figure I is a cross-sectional view of a prior art key structure of the mobile phone.

[0010] 图2为本发明一实施方式中的按键装置的剖视图。 [0010] FIG. 2 is a sectional view of the embodiment of a key device of the present embodiment of the invention.

[0011] 图3为本发明一实施方式中的按键装置的光源穿透导光膜的示意图。 [0011] FIG. 3 is a schematic embodiment of a light source key device penetrating a light guide film of the present embodiment of the invention.

[0012] 图4为本发明的导光膜层的制造方法流程图。 A method for producing a light guide film layer [0012] FIG 4 is a flowchart of the present invention.

[0013] 图5为本发明的导光膜层在模具中的成型剖视图。 The light guide layer forming a cross-sectional view of the present invention [0013] FIG 5 in the mold.

[0014] 主要元件符号说明 [0014] Main reference numerals DESCRIPTION

Figure CN102832068AD00041

如下具体实施方式将结合上述附图进一步说明本发明。 The following detailed description in conjunction with the accompanying drawings, the present invention is described.

具体实施方式 Detailed ways

[0015] 请参阅图2,其为本发明一实施方式中的按键装置20的剖视图。 [0015] Referring to FIG 2, a cross-sectional view of the embodiment of the key device 20 to an embodiment of the present invention which. 该按键装置20可安装在配有相应按键电路的电路板上,利用该按键装置20实现各按键与电路板上的电路的导通与隔断,以实现按键输入操作。 The key device 20 may be mounted on a circuit board with a circuit of a corresponding key, key device 20 with which the conduction is cut off the circuit, each of the keys on the circuit board, to achieve a key input operation. 该按键装置20由下至上依次包括一电路板30,一锅仔层21、一导光膜层22及一按键层23。 Oriented means 20 of the key 30 in turn comprises a circuit board, a dome layer 21, a light guide layer 22 and layer 23 is a key.

[0016] 该锅仔层21包括若干设置于电路板30上的由金属材料制成的锅仔片212。 [0016] The dome 21 includes a plurality of layers disposed dome 212 is made of a metal material on the circuit board 30. 按键层23包括若干按键232。 Layer 23 comprises a plurality of key buttons 232. 该按键232可选用硅胶制成,其表面印有中文、英文、或日文等字符符号,每一按键对应一锅仔片212。 The selection button 232 may be made of silica gel, the surface of printed characters and the like Chinese, English, Japanese, or symbol, each corresponding to a key dome 212.

[0017] 导光膜层22包括一光学膜层221及位于该光学膜层221 —侧与该光学膜层221成型于一体的橡胶层223。 [0017] The light guide 22 includes an optical film layer 221 and optical film 221 located - Rubber layer 223 side of the optical film 221 formed in a body.

[0018] 在本实施方式中,该光学膜层221可由聚碳酸酯(PC)、热塑性聚氨酯(TPU)、聚对苯二甲酸乙二醇酯(PET)或者硅胶(silicon)制成。 [0018] In the present embodiment, the optical film 221 may be formed of polycarbonate (PC), thermoplastic polyurethane (TPU), polyethylene terephthalate (PET) or silica (Silicon) is made. 该光学膜层221贴合于按键层23的一侧上设有多个彼此间隔开的或凹或凸的网点区222。 The optical film 221 bonded on one side of the key dot layer 23 is provided with a plurality of regions spaced from each other, or concave or convex 222. 在本实施方式中,该网点区222是凹陷的。 In the present embodiment, the dot region 222 is recessed. 每一按键232均凸设于导光膜层22上且分别对应于一网点区222。 Each key 232 are provided on the projection on the light guide layer 22 and respectively corresponding to a 222 dot area.

[0019] 请一并参阅图3,按键装置20还包括若干发光组件50。 [0019] Referring to FIG. 3, the key 20 further includes a plurality of light emitting device assembly 50. 该发光组件50与电路板30相连接,用于给按键装置20提供光源。 The light emitting element 50 is connected to the circuit board 30, to provide a light source apparatus 20 to the key. 发光组件50与导光膜层22处于同一高度位置处,其发出的光线经过光学膜层221的反射之后直接从网点区222处射出,便可直接照亮网点区222位置上的按键232,以取代现有方案中如图I所示的需穿过橡胶层12才能照亮按键111。 Emitting element 50 and the light guide layer 22 is at the same height, which emits the light emitted from the dot region 222 after the reflective optical layer 221, 232 can be directly illuminated keys 222 on the network location area to FIG replace the existing schemes I through the rubber layer 12 needs to illuminate the keys 111 shown in FIG. 如此,本发明所提供的导光膜层还提高了发光组件光线的传输效率,可节省电能。 Thus, the light guide film according to the present invention also provides improved transmission efficiency of the light emitting element, can save power. 在本实施方式中,发光组件50为LED颗粒。 In the present embodiment, the light emitting element 50 is an LED particles.

[0020] 在本实施方式中,该橡胶层223在背向光学膜层221的一侧设置有若干容纳区224。 [0020] In the present embodiment, the rubber layer 223 at the side facing away from the optical film layer 221 is provided with a plurality of receiving areas 224. 该容纳区224设置于电路板30上的锅仔片212周边需安装其他元器件的相对应位置处,用于部分容纳该元器件。 The receiving area 224 arranged on the circuit board 30 of the dome 212 to be installed at a periphery corresponding to the positions of other components, for partially receiving the components. 如此,可为该元件争取更大的安装空间,更有利于方便元件的安装,亦可减少按键与元器件之间电气信号的相互干扰。 Thus, for the elements may be greater for the installation space, is more conducive to easy installation element, can reduce the mutual interference between the key and the electrical signal components. 该橡胶层223在对应于锅仔片212位置处形成有一下凸点225。 The rubber layer 223 is formed at a position corresponding to the dome 212 has a lower bump 225. 当用户在触碰按键232时,其触碰按键232的压力依次通过按键232、导光膜层22传递到凸点225上,通过该凸点225更加集中地传递到达锅仔片212上。 When the user touches the button 232, which in turn touches the pressure 232 through the key button 232, the light guide layer 22 is transmitted to the bumps 225, more intensively transmitted through the bump 225 reaches the dome 212. 如此,增强用户触碰按键232的手感。 Thus, to enhance the user touches the touch key 232.

[0021] 本发明通过将按键的光学膜层与橡胶层复合一体化,以降低整个按键结构的厚度;同时将光学膜层置于橡胶层的上面,提高了光传递的效率;此外,将橡胶层与按键周边需安装其他元件的对应位置处做省料处理以形成容纳区,以为该元件争取到更大的容纳空间,避免按键与元件之间电气信号的相互影响,还能降低生产成本。 [0021] By the present invention, optical film integrated key and the rubber layer composite, in order to reduce the thickness of the entire key structure; while the optical film placed on top of the rubber layer, to improve the efficiency of light transmission; In addition, the rubber layer surrounding keys to be installed at a position corresponding to the other elements do form a receiving zone to the processing and material, that the receiving element to secure a larger space, to avoid the mutual influence of an electric signal between the key and the member, but also reduce production costs.

[0022] 请一并参阅图4与图5,图4为本发明一实施方式中按键装置用的导光膜层的制造方法流程图,图5为本发明的导光膜在模具中的成型剖视图。 [0022] Referring to FIG. 4 and FIG. 5, FIG. 4 of the present embodiment described a method of manufacturing a light guide layer flowchart key device, FIG. 5 of the present invention, the light guide film in the mold of the invention sectional view. 该成型导光膜的模具40包括一公模41与一母模42,该公模与母模相互配合形成一成型腔43,该成型腔43用于成型导光膜。 The light guide film molding die 40 comprises a male mold 41 and a female mold 42, the male die cooperating with the female mold 43 is formed a molding cavity, the molding cavity 43 for molding the light guide film. 该导光膜包括一光学膜层221及与该光学膜层221复合与一体的橡胶层223,该橡胶层上设置有若干容纳区。 The light guide film comprising an optical film and the optical film layer 221 and 221 integral with the composite rubber layer 223, the rubber layer disposed on a plurality of receiving areas. 该方法包括以下步骤: The method comprises the steps of:

S401:确定橡胶层223上需设置容纳区224的位置。 S401: determining the position of the receiving area 224 to be set on the rubber layer 223. 其中,该容纳区224的位置为橡胶层223与按键周边需安装其他元件的对应位置处。 Wherein the position of the receiving area 224 of the periphery of the rubber layer 223 and the key should be installed at a position corresponding to the other element.

[0023] S402:在导光膜层22的光学膜层221上与橡胶层223的容纳区224对应位置处贴上覆盖片60。 [0023] S402: on the photoconductive layer 22 and the optical film 221 at a position corresponding to the rubber layer 223 covering sheet receiving area 224 labeled 60. 其中,该覆盖片60的材质为树胶贴片或者金属贴片,其熔点高于所述橡胶层223的熔点。 Wherein the cover sheet material 60 is a gum or a metal patch patch, melting point higher than that of the rubber layer 223.

[0024] S403 :将贴好覆盖片30的光学膜层221置入模具的公模41上,将母模42与公模41合模,在模具成型腔43中注入用于成型橡胶层223的橡胶,以使橡胶层223复合于光学膜层221的一侧。 [0024] S403: The optical film attached to cover sheet 30 Good 221 placed on the male mold 41 of the mold, the female mold 42 and the male mold die 41, the injection molding cavity in the mold 43 for molding the rubber layer 223 rubber, so that the rubber compound layer 223 on a side 221 of the optical film.

[0025] S404 :成型冷却后打开模具40,取出成品并取下该成品的光学膜层221上的覆盖片60,便制得了本发明中的导光膜层22。 [0025] S404: After cooling the molding die 40 is opened, remove the cover and remove the finished sheet 60 on the finished optical film 221, it was prepared a light guide layer 22 in the present invention.

[0026] 本方法便可将所述橡胶层置于所述光学膜层的一侧且与所述光学膜层成型于一体。 [0026] The present method can rubber layer is placed on one side of the optical film and the optical film are integrally molded in. 本方法只需要在成型导光膜时在光学膜层上与橡胶层上需设置容纳区的对应位置处贴上覆盖片,在光学膜层与橡胶层复合成型后将覆盖片取下即可成型本发明中的导光膜,而不用重新开发模具,如此节省开发模具的时间与成本。 This method requires only during molding the light guide film on the optical film and the rubber layer to be set at the corresponding position of the paste receiving area cover sheet is removed in the optical film and the rubber layer composite formed after forming the cover sheet can be light guide film of the present invention, without re-develop mold, thus saving time and costs in the development of mold.

[0027] 本技术领域的普通技术人员应当认识到,以上的实施方式仅是用来说明本发明,而并非用作为对本发明的限定,只要在本发明的实质精神范围之内,对以上实施例所作的适当改变和变化都落在本发明要求保护的范围之内。 [0027] skilled in the art should appreciate that the above embodiments are only used to illustrate the present invention and are not used as a limitation of the present invention, as long as within the true spirit of the invention, the above embodiments within the appropriate changes are made and variations fall within the scope of the invention as claimed.

Claims (8)

1. 一种按键装置用的导光膜层,其特征在于:所述导光膜层包括一光学膜层及位于所述光学膜层一侧与所述光学膜层成型于一体的橡胶层,所述橡胶层上形成有至少一容纳区。 A light guiding layer of the device keys, wherein: said light guide layer comprises an optical film and the optical film is located to the side of the optical film formed in one of the rubber layers, the rubber layer is formed on at least one receiving area.
2.如权利要求I所述的导光膜层,其特征在于,所述光学膜层由聚碳酸酯、热塑性聚氨酯、聚对苯二甲酸乙二醇酯或者硅胶制成。 2. The light guide film according to claim I, wherein said optical film is made of polycarbonate, thermoplastic polyurethane, polyethylene terephthalate, or made of silicone.
3.如权利要求I所述的导光膜层,其特征在于,所述光学膜层上与所述橡胶层相对的一侧上设有至少一网点区。 The light guide layer I according to claim 2, wherein the optical film on the opposite side of the rubber layer is provided with at least one network area.
4. 一种按键装置,包括按键层、导光膜层及锅仔片层,所述导光膜层设置于所述按键层与锅仔片层之间,其特征在于:所述导光膜层包括一光学膜层及位于所述光学膜层一侧与所述光学膜层成型于一体的橡胶层,所述橡胶层上形成有至少一容纳区。 A key device comprising a key layer, optical guide layer and the metal dome sheet, the light guiding layer disposed between the layer and the metal dome button sheet, wherein: said light guide film a layer comprising the optical film and the optical film is located to the side of the optical film formed in one of the rubber layer, the at least one receiving area is formed on the rubber layer.
5.如权利要求4所述的按键装置,其特征在于,所述光学膜层由聚碳酸酯、热塑性聚氨酯、聚对苯二甲酸乙二醇酯或者硅胶制成。 The key device of claim 4, wherein said optical film is made of polycarbonate, thermoplastic polyurethane, polyethylene terephthalate, or made of silicone.
6.如权利要求4所述的按键装置,其特征在于,所述光学膜层上与所述橡胶层相对的一侧上设有至少一网点区。 6. A key device according to claim 4, characterized in that at least one dot area on a side of the optical film opposite to the rubber layer.
7.如权利要求6所述的按键装置,其特征在于,所述按键还包括至少一发光组件,所述发光组件与所述电路板相连接,用于给所述按键装置提供光源。 7. A key device according to claim 6, wherein said key further comprises at least one light-emitting element, the light emitting assembly is connected to the circuit board, for the key device to provide a light source.
8.如权利要求7所述的按键装置,其特征在于,所述发光组件与所述导光膜层处于同一水平高度,所述发光组件发出的光线经过所述光学膜层的反射之后从所述网点区射出以照亮位于所述网点区上的按键。 8. A key device according to claim 7, wherein said light-emitting element and the light guiding layer at the same level, the light emitted from the light emitting element of the optical film after reflection from the said outlets exit area positioned to illuminate keys of the dot region.
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US9710069B2 (en) 2012-10-30 2017-07-18 Apple Inc. Flexible printed circuit having flex tails upon which keyboard keycaps are coupled
US9761389B2 (en) 2012-10-30 2017-09-12 Apple Inc. Low-travel key mechanisms with butterfly hinges
US10211008B2 (en) 2012-10-30 2019-02-19 Apple Inc. Low-travel key mechanisms using butterfly hinges
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US10224157B2 (en) 2013-09-30 2019-03-05 Apple Inc. Keycaps having reduced thickness
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US9997304B2 (en) 2015-05-13 2018-06-12 Apple Inc. Uniform illumination of keys
US9997308B2 (en) 2015-05-13 2018-06-12 Apple Inc. Low-travel key mechanism for an input device
US9934915B2 (en) 2015-06-10 2018-04-03 Apple Inc. Reduced layer keyboard stack-up
US9971084B2 (en) 2015-09-28 2018-05-15 Apple Inc. Illumination structure for uniform illumination of keys
US10310167B2 (en) 2015-09-28 2019-06-04 Apple Inc. Illumination structure for uniform illumination of keys
US10115544B2 (en) 2016-08-08 2018-10-30 Apple Inc. Singulated keyboard assemblies and methods for assembling a keyboard

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