CN103323903B - For light guide plate and the illuminated keyboard of illuminated keyboard - Google Patents
For light guide plate and the illuminated keyboard of illuminated keyboard Download PDFInfo
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- CN103323903B CN103323903B CN201310237392.9A CN201310237392A CN103323903B CN 103323903 B CN103323903 B CN 103323903B CN 201310237392 A CN201310237392 A CN 201310237392A CN 103323903 B CN103323903 B CN 103323903B
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- light
- guide plate
- light guide
- illuminated keyboard
- exiting surface
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Abstract
The present invention proposes a kind of light guide plate for illuminated keyboard and illuminated keyboard, light guide plate has light in part, exiting surface, bottom surface and side, exiting surface and bottom surface are oppositely arranged, this light in part and this side are between this exiting surface and this bottom surface, bottom surface comprises multiple reflection spot, and the light entered from light in part, after reflection spot reflection, is derived corresponding to the position of reflection spot by exiting surface, light guide plate has destruction structure close to the edge of side, is overflowed by side to prevent light.The present invention destroys structure by being formed in light guide plate self, prevents light light leak, and when light injects reflection spot, just can be derived by the position of reflection spot corresponding on exiting surface, just can control luminous position thus, such as, only make button center luminous.
Description
Technical field
The present invention, about a kind of light guide plate for illuminated keyboard and illuminated keyboard, refers to a kind of light guide plate with destruction structure especially.
Background technology
Fig. 1 is a kind of known illuminated keyboard, comprises keypad portion 01 and illuminating part 02.To arrange in pairs or groups mainly with light guide plate 021 in illuminating part 02 backlight module 022 of side direction type, the pointolite of side direction can be converted to the area source at positive visual angle, and utilize reflection spot 021a to be led by light keycap 011.But the light entered from side direction cannot indexing completely, and have part light source from other sides and overflow, produce light leakage phenomena, affect product aesthetic feeling.
Summary of the invention
The present invention has about a kind of light guide plate for illuminated keyboard, destroying structure, preventing light light leak by being formed in light guide plate self.
The present invention proposes a kind of light guide plate for illuminated keyboard, this light guide plate has light in part, exiting surface, bottom surface and side, this exiting surface and this bottom surface are oppositely arranged, this light in part and this side are between this exiting surface and this bottom surface, this bottom surface comprises a plurality of reflection spot, the light entered from this light in part is after the reflection of this reflection spot, derive corresponding to the position of this reflection spot by this exiting surface, wherein this light guide plate has destruction structure close to the edge of this side, is overflowed by this side to prevent light.
As optional technical scheme, this destruction structure is picked mode, mode of texturing or atomizing type with laser burning and is made.
As optional technical scheme, this destruction structure is made by this light guide plate this edge reflexed close to this side.
As optional technical scheme, this destruction structure is close to this edge heating of this side or be polished to by this light guide plate.
As optional technical scheme, this light guide plate comprises mounting hole, and this light guide plate has this destruction structure in the peripheral part of this mounting hole, is overflowed by this periphery of this mounting hole to prevent light.
As optional technical scheme, this light guide plate comprises holes, and this light in part is positioned at the periphery of this holes.
The present invention proposes again a kind of illuminated keyboard, comprises light guide plate as above.
As optional technical scheme, this illuminated keyboard also comprises light-emitting component, and this light-emitting component is arranged at this light in part side.
As optional technical scheme, this illuminated keyboard also comprises light-emitting component, and this light guide plate comprises holes, and this light-emitting component is arranged in this holes.
Compared with prior art, the present invention destroys structure by being formed in light guide plate self, prevents light light leak, and when light injects reflection spot, just can be derived by the position of reflection spot corresponding on exiting surface, just can control luminous position thus, such as, only make button center luminous.
In order to have better understanding, special embodiment below to above-mentioned and other aspect of the present invention, and coordinating institute's accompanying drawings, being described in detail below:
Accompanying drawing explanation
Fig. 1 is the three-dimensional exploded view of known illuminated keyboard.
Fig. 2 is the schematic diagram of light guide plate according to an embodiment of the invention.
Fig. 3 is the schematic diagram of light guide plate according to another embodiment of the present invention.
Fig. 4 is the schematic diagram of the light guide plate according to further embodiment of this invention.
Fig. 5 is the schematic diagram of light guide plate according to yet another embodiment of the invention.
Fig. 6 is the schematic diagram of the light guide plate according to further embodiment of this invention.
Embodiment
For making there is further understanding to object of the present invention, structure, feature and function thereof, embodiment is hereby coordinated to be described in detail as follows.
Please refer to Fig. 2, is the schematic diagram of light guide plate according to an embodiment of the invention.Light guide plate 100 comprises light in part 110, exiting surface 120, bottom surface 130 and side 140.Exiting surface 120 is relative to bottom surface 130.Light in part 110 and side 140 between exiting surface 120 and bottom surface 130, and are interconnected with exiting surface 120 and bottom surface 130.Destroy the edge that structure 150 is formed at light guide plate 100 adjacent side face 140.In this example, light guide plate 100 is rectangular flat, and destroy the edge that structure 150 is formed at light guide plate 100 right flank, in right practical application, the shape of light guide plate 100 can adjust on demand, and destroying the edge that structure 150 can be formed at other any sides 140 except light in part 110, the present invention is not limited.
Destroy structure 150 for light guide plate being formed close to the edge reflexed of side 140, because of material behavior cause, reflexed position can produce albefaction folding line, makes the edge close to side 140 become opaque, overflows at reflexed side 140 place since then to avoid light.
The material that light guide plate 100 is greater than periphery material (such as air) with refractive index is made, such as, be polymethylmethacrylate (PMMA), and the light L therefore entered by incidence surface 110 can produce total reflection in light guide plate 100.When light guide plate 100 is for illuminated keyboard, can as shown in the light guide plate 100 of Fig. 2, in bottom surface 130 ad-hoc location, multiple reflection spot 160 is set, when light L injects reflection spot, just can be derived by the position of reflection spot 160 corresponding on exiting surface 120, just can control luminous position thus, such as, only make button center luminous.
In addition, the formation method destroying structure is not limited to reflexed one.Please refer to Fig. 3, is the schematic diagram of light guide plate 200 according to another embodiment of the present invention.The destruction structure 250 of light guide plate 200 is atomized for surface treatment is carried out in modes such as polishing or heating in side 240, and edge also can be made to become opaque stop light.In this example, light guide plate 200 has more mounting hole 270, the object of screw and so on can be allowed to pass through, the position of lightguide plate fixing 200.For avoiding light to overflow from mounting hole 270 place, can be formed in the peripheral part of mounting hole 270 and destroying structure 250.
Please refer to Fig. 4, is the schematic diagram of the light guide plate 300 according to further embodiment of this invention.Light guide plate 300 also has holes 370, but holes 370 is herein such as the light-emitting component 380 of LED in order to accommodation.That is, the periphery of holes 370 is the light in part 310 of light guide plate 300.In addition in this example, destroying structure 350 is burn with laser to pick mode, forms laser engraving line, also can stop that light overflows from side 340 in side 340 edge.In one embodiment, picking a distance when laser burning is 0.01 millimeter (mm), laser engraving width be 2 millimeters (mm) and laser marking speed is 500 millimeters (500mm/s) per second time, the laser engraving line of formation can effectively stop edge light leak.Certainly, above-mentioned parameter is only the use illustrated, can't cause restriction to the present invention.
Please refer to Fig. 5, is the schematic diagram of light guide plate 400 according to yet another embodiment of the invention.The destruction structure 450 of light guide plate 400 is by the edge deformation close to side 440, makes edge become the shape (plane) of non-script.Mode of texturing can be extrude, cut, thinning, sealing and so on etc., the present invention is not limited.Edge after distortion becomes opaque, prevents light L from overflowing.Or, as shown in Figure 6, complicated path can be formed at the edge close to side 540, makes light L also be difficult to overflow from side 540 place after light guide plate internal reflection.
The destruction structure that it should be noted that in light guide plate has more than limit and is formed in a singular fashion, and can be used in combination, such as, be first out of shape and heat, or first cuts extruding etc. again.Similar, when light guide plate existing multiple holes, this little holes is also not limited to special purpose, and can arrange light-emitting component in the holes of part, its periphery is as light in part, and edge does not have destruction structure, and the edge of other holes then can have destruction structure.
The light guide plate of the above embodiment of the present invention, prevents light leak situation from occurring to destroy structure.This destroys structure a bit and is all formed in light guide plate self, and does not need other additional elements to assist, and can reduce the excessive zero assembly consumption as shielding plate and so on, reduces plant bulk or increase inner free space.In addition, the edge spraying processing procedure that the processing procedure destroying structure is also commonly used comparatively at present saves cost and time, does not have the problem that coating pollutes, can improving product yield.
The present invention is described by above-mentioned related embodiment, but above-described embodiment is only enforcement example of the present invention.Must it is noted that the embodiment disclosed limit the scope of the invention.On the contrary, change done without departing from the spirit and scope of the present invention and retouching, all belong to scope of patent protection of the present invention.
Claims (4)
1. the light guide plate for illuminated keyboard, it is characterized in that: this light guide plate has light in part, exiting surface, bottom surface and side, this exiting surface and this bottom surface are oppositely arranged, this light in part and this side are between this exiting surface and this bottom surface, this bottom surface comprises a plurality of reflection spot, the light entered from this light in part is after the reflection of this reflection spot, derive corresponding to the position of this reflection spot by this exiting surface, wherein this light guide plate has destruction structure close to the edge of this side, this destruction structure is made by the edge reflexed of this light guide plate close to this side, the edge close to this side is made to become opaque, overflowed by this side to prevent light,
This light guide plate comprises multiple holes, and wherein, the periphery arranging the holes of light-emitting component is this light in part, and the periphery of other holes has another destruction structure, is overflowed by this periphery of these other holes to prevent light.
2. as claimed in claim 1 for the light guide plate of illuminated keyboard, it is characterized in that: this another destruction structure is picked mode, mode of texturing or atomizing type with laser burning and made.
3., as claimed in claim 1 for the light guide plate of illuminated keyboard, it is characterized in that: this light guide plate comprises mounting hole, this light guide plate have in the peripheral part of this mounting hole this another destroy structure, overflowed by this periphery of this mounting hole to prevent light.
4. an illuminated keyboard, is characterized in that comprising:
As the light guide plate in claim 1-3 as described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310237392.9A CN103323903B (en) | 2013-06-15 | 2013-06-15 | For light guide plate and the illuminated keyboard of illuminated keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310237392.9A CN103323903B (en) | 2013-06-15 | 2013-06-15 | For light guide plate and the illuminated keyboard of illuminated keyboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103323903A CN103323903A (en) | 2013-09-25 |
| CN103323903B true CN103323903B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310237392.9A Active CN103323903B (en) | 2013-06-15 | 2013-06-15 | For light guide plate and the illuminated keyboard of illuminated keyboard |
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| Country | Link |
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| CN (1) | CN103323903B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI521557B (en) * | 2014-12-16 | 2016-02-11 | A light-emitting function of the key structure and a light guide function of the film circuit board | |
| CN104851729A (en) * | 2015-04-09 | 2015-08-19 | 信阳农林学院 | Computer keyboard |
| CN105023790A (en) * | 2015-07-24 | 2015-11-04 | 东莞市高特电子有限公司 | Mechanical switch light guide and mechanical switch added with light guide |
| CN110208899B (en) * | 2018-08-01 | 2021-02-26 | 光宝电子(广州)有限公司 | Backlight module and input device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924664A (en) * | 2005-09-02 | 2007-03-07 | 群康科技(深圳)有限公司 | Back light module unit |
| CN101329036A (en) * | 2007-06-22 | 2008-12-24 | 美蓓亚株式会社 | Spread illuminating apparatus |
| CN102155692A (en) * | 2011-04-13 | 2011-08-17 | 苏州向隆塑胶有限公司 | Backlight module and assembling method thereof |
| CN202258947U (en) * | 2011-10-08 | 2012-05-30 | 群光电子股份有限公司 | Luminous keyboard device |
| CN102969185A (en) * | 2011-08-31 | 2013-03-13 | 致伸科技股份有限公司 | Illuminant keyboard with light guide pipes |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100656540B1 (en) * | 1999-12-15 | 2006-12-12 | 삼성전자주식회사 | Liquid crystal display device module and display device |
| JP4333440B2 (en) * | 2004-03-30 | 2009-09-16 | 日亜化学工業株式会社 | Surface emitting device |
| US7932890B2 (en) * | 2007-08-30 | 2011-04-26 | Citizen Electronics Co., Ltd. | Lightguide plate and electronic device |
-
2013
- 2013-06-15 CN CN201310237392.9A patent/CN103323903B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924664A (en) * | 2005-09-02 | 2007-03-07 | 群康科技(深圳)有限公司 | Back light module unit |
| CN101329036A (en) * | 2007-06-22 | 2008-12-24 | 美蓓亚株式会社 | Spread illuminating apparatus |
| CN102155692A (en) * | 2011-04-13 | 2011-08-17 | 苏州向隆塑胶有限公司 | Backlight module and assembling method thereof |
| CN102969185A (en) * | 2011-08-31 | 2013-03-13 | 致伸科技股份有限公司 | Illuminant keyboard with light guide pipes |
| CN202258947U (en) * | 2011-10-08 | 2012-05-30 | 群光电子股份有限公司 | Luminous keyboard device |
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| Publication number | Publication date |
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| CN103323903A (en) | 2013-09-25 |
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