技术领域technical field
本发明关于一种用于发光键盘的导光板及发光键盘，特别是指一种具有破坏结构的导光板。The invention relates to a light guide plate used for a luminous keyboard and a luminous keyboard, in particular to a light guide plate with a destructive structure.
背景技术Background technique
图1为一种习知的发光键盘，包括键盘部01与发光部02。发光部02内多以导光板021搭配侧向式的背光模组022，可以将侧向的点光源转换成正视角的面光源，并利用反射点021a将光线导向键帽011。然而，从侧向进入的光无法完全转换角度，而会有部分光源从其他侧面溢出，产生漏光现象，影响产品美感。FIG. 1 is a conventional light-emitting keyboard, including a keyboard part 01 and a light-emitting part 02 . The light guide plate 021 is mostly used in the light emitting part 02 together with the side-facing backlight module 022, which can convert the point light source from the side into a surface light source with a front viewing angle, and use the reflection point 021a to guide the light to the keycap 011. However, the angle of light entering from the side cannot be completely converted, and some light sources will overflow from other sides, resulting in light leakage and affecting the aesthetics of the product.
发明内容Contents of the invention
本发明有关于一种用于发光键盘的导光板，藉由在导光板自身形成破坏结构，防止光线漏光。The invention relates to a light guide plate used for a luminous keyboard, which prevents light leakage by forming a destruction structure on the light guide plate itself.
本发明提出一种用于发光键盘的导光板，该导光板具有入光部，出光面、底面以及侧面，该出光面与该底面相对设置，该入光部及该侧面位于该出光面及该底面之间，该底面包括复数个反射点，自该入光部进入的光线经该反射点反射后，由该出光面上对应于该反射点的位置导出，其中该导光板接近该侧面的边缘具有破坏结构，以防止光线由该侧面溢出。The present invention proposes a light guide plate for a luminous keyboard, the light guide plate has a light incident portion, a light exit surface, a bottom surface and a side surface, the light exit surface is opposite to the bottom surface, the light entrance portion and the side surface are located between the light exit surface and the Between the bottom surfaces, the bottom surface includes a plurality of reflection points, after the light entering from the light incident part is reflected by the reflection points, it is guided out from the position corresponding to the reflection points on the light exit surface, wherein the light guide plate is close to the edge of the side surface Has a breaking structure to prevent light from escaping from this side.
作为可选的技术方案，该破坏结构以激光烧撷方式、变形方式或雾化方式制成。As an optional technical solution, the destructive structure is made by laser ablation, deformation or atomization.
作为可选的技术方案，该破坏结构为将该导光板接近该侧面的该边缘反折制成。As an optional technical solution, the destructive structure is formed by reflexing the edge of the light guide plate close to the side.
作为可选的技术方案，该破坏结构为将该导光板接近该侧面的该边缘加热或打磨制成。As an optional technical solution, the destructive structure is formed by heating or grinding the edge of the light guide plate close to the side.
作为可选的技术方案，该导光板包括安装孔，该导光板于该安装孔的周缘部分具有该破坏结构，以防止光线由该安装孔的该周缘溢出。As an optional technical solution, the light guide plate includes a mounting hole, and the light guide plate has the breaking structure at a peripheral portion of the mounting hole, so as to prevent light from overflowing from the peripheral portion of the mounting hole.
作为可选的技术方案，该导光板包括破孔，该入光部位于该破孔的周缘。As an optional technical solution, the light guide plate includes a hole, and the light incident portion is located at a periphery of the hole.
本发明又提出一种发光键盘，包括如上所述的导光板。The present invention further proposes a luminous keyboard, comprising the above-mentioned light guide plate.
作为可选的技术方案，该发光键盘还包括发光元件，该发光元件设置于该入光部侧。As an optional technical solution, the luminous keyboard further includes a luminous element, and the luminous element is disposed on the side of the light incident portion.
作为可选的技术方案，该发光键盘还包括发光元件，该导光板包括破孔，该发光元件设置于该破孔中。As an optional technical solution, the light-emitting keyboard further includes a light-emitting element, the light guide plate includes a hole, and the light-emitting element is disposed in the hole.
与现有技术相比，本发明藉由在导光板自身形成破坏结构，防止光线漏光，且当光线射入反射点时，便会由出光面上对应反射点的位置导出，如此一来便可控制发光位置，例如仅使按键中心发光。Compared with the prior art, the present invention prevents light leakage by forming a destructive structure on the light guide plate itself, and when the light enters the reflection point, it will be led out from the position corresponding to the reflection point on the light-emitting surface, so that it can Control the position of the glow, such as making only the center of the key glow.
为了对本发明的上述及其他方面有更佳的了解，下文特举实施例，并配合所附图式，作详细说明如下：In order to have a better understanding of the above and other aspects of the present invention, the following specific examples, together with the accompanying drawings, are described in detail as follows:
附图说明Description of drawings
图1为习知发光键盘的立体分解图。Fig. 1 is a three-dimensional exploded view of a conventional luminous keyboard.
图2为根据本发明一实施例的导光板的示意图。FIG. 2 is a schematic diagram of a light guide plate according to an embodiment of the invention.
图3为根据本发明另一实施例的导光板的示意图。FIG. 3 is a schematic diagram of a light guide plate according to another embodiment of the present invention.
图4为根据本发明又一实施例的导光板的示意图。FIG. 4 is a schematic diagram of a light guide plate according to yet another embodiment of the present invention.
图5为根据本发明再一实施例的导光板的示意图。FIG. 5 is a schematic diagram of a light guide plate according to yet another embodiment of the present invention.
图6为根据本发明又一实施例的导光板的示意图。FIG. 6 is a schematic diagram of a light guide plate according to yet another embodiment of the present invention.
具体实施方式Detailed ways
为使对本发明的目的、构造、特征、及其功能有进一步的了解，兹配合实施例详细说明如下。In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.
请参照图2，为根据本发明一实施例的导光板的示意图。导光板100包括入光部110、出光面120、底面130以及侧面140。出光面120相对于底面130。入光部110及侧面140位于出光面120及底面130之间，并与出光面120及底面130相互连接。破坏结构150形成于导光板100邻近侧面140的边缘。本例中导光板100为矩形平板，且破坏结构150形成于导光板100右侧面的边缘，然实际应用上，导光板100的形状可依需求调整，而破坏结构150可形成于除入光部110外其他任意侧面140的边缘，本发明并不加以限制。Please refer to FIG. 2 , which is a schematic diagram of a light guide plate according to an embodiment of the present invention. The light guide plate 100 includes a light incident portion 110 , a light exit surface 120 , a bottom surface 130 and a side surface 140 . The light emitting surface 120 is opposite to the bottom surface 130 . The light incident portion 110 and the side surface 140 are located between the light exit surface 120 and the bottom surface 130 , and are connected to the light exit surface 120 and the bottom surface 130 . The damage structure 150 is formed on the edge of the light guide plate 100 adjacent to the side surface 140 . In this example, the light guide plate 100 is a rectangular flat plate, and the damage structure 150 is formed on the edge of the right side of the light guide plate 100. The edge of any other side 140 outside the portion 110 is not limited by the present invention.
破坏结构150为将导光板接近侧面140的边缘反折而形成，因材料特性缘故，反折位置会产生白化折痕，使接近侧面140的边缘变成不透明，以避免光线自此反折侧面140处溢出。The damage structure 150 is formed by refolding the edge of the light guide plate close to the side 140. Due to the material properties, whitening creases will be produced at the reflexed position, making the edge close to the side 140 opaque, so as to prevent light from refracting the side 140 overflow.
导光板100以折射率大于周边物质(例如空气)的材料制成，例如是聚甲基丙烯酸甲酯(PMMA)，因此由入光面110进入的光线L能在导光板100内产生全反射。当导光板100用于发光键盘时，可如图2的导光板100所示，于底面130特定位置设置多个反射点160，当光线L射入反射点时，便会由出光面120上对应反射点160的位置导出，如此一来便可控制发光位置，例如仅使按键中心发光。The light guide plate 100 is made of a material with a higher refractive index than surrounding substances (such as air), such as polymethyl methacrylate (PMMA). Therefore, the light L entering through the light incident surface 110 can be totally reflected in the light guide plate 100 . When the light guide plate 100 is used for a light-emitting keyboard, as shown in the light guide plate 100 in FIG. The position of the reflection point 160 is derived, so that the light emitting position can be controlled, for example, only the center of the key is lighted.
另外，破坏结构的形成方法并不限于反折一种。请参照图3，为根据本发明另一实施例的导光板200的示意图。导光板200的破坏结构250为将侧面240以打磨或加热等方式进行表面处理将其雾化，亦可使边缘变得不透明阻挡光线。在本例中，导光板200更具有安装孔270，可让螺丝之类的物件通过，固定导光板200的位置。为避免光线自安装孔270处溢出，可在安装孔270的周缘部分形成破坏结构250。In addition, the method of forming the broken structure is not limited to one of inflection. Please refer to FIG. 3 , which is a schematic diagram of a light guide plate 200 according to another embodiment of the present invention. The destruction structure 250 of the light guide plate 200 is to atomize the surface of the side surface 240 by grinding or heating, and also make the edge opaque to block light. In this example, the light guide plate 200 further has a mounting hole 270 through which objects such as screws can pass through to fix the position of the light guide plate 200 . In order to prevent light from overflowing from the installation hole 270 , a destruction structure 250 may be formed on a peripheral portion of the installation hole 270 .
请参照图4，为根据本发明又一实施例的导光板300的示意图。导光板300亦具有破孔370，但此处的破孔370用以容纳例如是LED的发光元件380。也就是说，破孔370的周缘即为导光板300的入光部310。另外在本例中，破坏结构350是以激光烧撷方式，在侧面340边缘处形成激光雕刻线，亦可阻挡光线自侧面340溢出。一实施例中，当激光烧撷点距为0.01毫米(mm)，激光雕刻宽度为2毫米(mm)且激光打标速度为每秒500毫米(500mm/s)时，形成的激光雕刻线可有效阻挡边缘漏光。当然，上述参数仅为举例说明之用，并不会对本发明造成限制。Please refer to FIG. 4 , which is a schematic diagram of a light guide plate 300 according to another embodiment of the present invention. The light guide plate 300 also has a hole 370 , but the hole 370 here is used to accommodate a light emitting element 380 such as an LED. That is to say, the periphery of the hole 370 is the light incident portion 310 of the light guide plate 300 . In addition, in this example, the destructive structure 350 forms laser engraving lines at the edge of the side surface 340 by means of laser ablation, which can also prevent light from overflowing from the side surface 340 . In one embodiment, when the laser ablation point pitch is 0.01 millimeter (mm), the laser engraving width is 2 millimeters (mm) and the laser marking speed is 500 millimeters per second (500mm/s), the formed laser engraving line can be Effectively block edge light leakage. Of course, the above parameters are only used for illustration and do not limit the present invention.
请参照图5，为根据本发明再一实施例的导光板400的示意图。导光板400的破坏结构450为将接近侧面440的边缘变形，使边缘变成非原本的形状(平面)。变形方式可以是挤压、裁切、薄化、封口之类等，本发明并不加以限制。变形后的边缘可变成不透明，防止光线L溢出。或者，可如图6所示，在接近侧面540的边缘形成复杂的路径，使光线L在导光板内反射后也难以自侧面540处溢出。Please refer to FIG. 5 , which is a schematic diagram of a light guide plate 400 according to yet another embodiment of the present invention. The destruction structure 450 of the light guide plate 400 deforms the edge close to the side surface 440 , so that the edge becomes a non-original shape (plane). The deformation method may be extrusion, cutting, thinning, sealing, etc., which are not limited in the present invention. The deformed edges can be made opaque to prevent the light L from spilling out. Alternatively, as shown in FIG. 6 , a complicated path can be formed near the edge of the side surface 540 , so that it is difficult for the light L to escape from the side surface 540 after being reflected in the light guide plate.
值得注意的是，导光板上的破坏结构并不只限以单一方式形成，而可混合使用，例如先变形再加热，或先裁切再挤压等等。相似的，当导光板上存在多个破孔时，此些破孔亦不限于单一用途，部分的破孔内可以设置发光元件，其周缘作为入光部，边缘不具有破坏结构，而其他破孔的边缘则可具有破坏结构。It should be noted that the destructive structures on the light guide plate are not limited to be formed in a single way, but can be used in combination, such as deforming first and then heating, or cutting first and then extruding, and so on. Similarly, when there are multiple perforations on the light guide plate, these perforations are not limited to a single purpose. Light-emitting elements can be arranged in some perforations, and the periphery thereof serves as the light incident part, and the edge does not have a destructive structure, while other perforations The edges of the holes can then have a disruptive structure.
本发明上述实施例的导光板，以破坏结构防止漏光情况发生。此些破坏结构皆形成在导光板自身，而不需要其他外加元件辅助，能够减少如遮挡片之类的额外零组件消耗，降低装置尺寸或增加内部的可用空间。此外，破坏结构的制程也较目前常用的边缘喷涂制程节省花费与时间，没有涂料污染的问题，能提升产品良率。The light guide plate in the above embodiments of the present invention prevents light leakage by destroying the structure. These destructive structures are all formed on the light guide plate itself without the assistance of other external components, which can reduce the consumption of additional components such as shielding sheets, reduce the size of the device or increase the available internal space. In addition, the process of destroying the structure also saves cost and time compared with the currently commonly used edge spraying process, and there is no problem of paint pollution, which can improve product yield.
本发明已由上述相关实施例加以描述，然而上述实施例仅为实施本发明的范例。必需指出的是，已揭露的实施例并未限制本发明的范围。相反地，在不脱离本发明的精神和范围内所作的更动与润饰，均属本发明的专利保护范围。The present invention has been described by the above-mentioned related embodiments, but the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention all belong to the scope of patent protection of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310237392.9ACN103323903B (en) | 2013-06-15 | 2013-06-15 | For light guide plate and the illuminated keyboard of illuminated keyboard |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310237392.9ACN103323903B (en) | 2013-06-15 | 2013-06-15 | For light guide plate and the illuminated keyboard of illuminated keyboard |
| Publication Number | Publication Date |
|---|---|
| CN103323903A CN103323903A (en) | 2013-09-25 |
| CN103323903Btrue CN103323903B (en) | 2015-11-18 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310237392.9AActiveCN103323903B (en) | 2013-06-15 | 2013-06-15 | For light guide plate and the illuminated keyboard of illuminated keyboard |
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| CN (1) | CN103323903B (en) |
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