CN102568901A - Method for manufacturing light guide structure - Google Patents
Method for manufacturing light guide structure Download PDFInfo
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- CN102568901A CN102568901A CN2010106166500A CN201010616650A CN102568901A CN 102568901 A CN102568901 A CN 102568901A CN 2010106166500 A CN2010106166500 A CN 2010106166500A CN 201010616650 A CN201010616650 A CN 201010616650A CN 102568901 A CN102568901 A CN 102568901A
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- light guide
- optical waveguide
- waveguide layer
- guide structure
- light
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Abstract
The invention discloses a method for manufacturing a light guide structure. The method comprises the following steps of: providing a light guide layer which is provided with a first surface and a second surface; providing a molding material which has light transmission property after being solidified; and performing a common molding process on the light guide layer and the molding material, so that the molding material forms a condensation structure and a microstructure region on the first surface of the light guide layer. The condensation structure is used for condensing rays emitted by a light source to the light guide layer. The microstructure region is used for reflecting or refracting the rays transmitted from the light guide layer, so that the rays are emitted. The condensation structure, the microstructure region and the light guide layer are molded together.
Description
Technical field
The present invention relates to a kind of method for making of light guide structure, particularly relate to a kind of method for making that is used in the light guide structure of slimming press-key structure.
Background technology
Electronic product for example mobile phone (Cell Phone), personal digital aid (PDA) (Personal DigitalAssistant PDA) waits and can be provided with key board usually, for the convenience on using or attractive in appearance, needs light source so that its enough light to be provided.For reaching this effect, all can utilize a LGP that the light of light-emitting component is transmitted to specific part.
Look type (top-view) light source in the existing use; Make light by LGP (light guide plate; LGP) or light-leading film (light guide film, below LGF) up conducts to keytop, but the thickness of the press-key structure that forms is like this gone up thicker mostly relatively.For trend in response to slimming now and miniaturization; Need to reduce thickness, use side light type light-emitting diode (side-view light-emittingdiode, side-view LED) at present mostly; Make light get into LGP from side; Yet light source and LGP make light on distributing, be prone to have uneven problem because of the distance that luminous energy transmits is different.Therefore, LGP 2 for example shown in Figure 1, it has a substrate 4, on substrate 4, has a plurality of light guide sections 6, and the distribution density of light guide section 6 is extremely close by dredging, and to improve the light problem of uneven distribution, front end one side of substrate 4 then is provided with two LED 8.In addition, the pressing function of existing light guide structure and button does not integrally combine, and for example light guide structure and convex body (plunger) are made respectively, and when button is assembled, make up again, and is comparatively loaded down with trivial details on feasible the manufacturing.
Therefore, still need a kind of light guide structure method for making of novelty, to make the less relatively press-key structure of thickness easily.
Summary of the invention
A purpose of the present invention is to provide a kind of method for making of molded light guide structure, and the size of structure is little, and make convenient.
Method according to manufacturing light guide structure of the present invention; It comprises provide one have one first and one second optical waveguide layer, provide one after solidifying, have a light transmission moulding material, and optical waveguide layer and moulding material are carried out a co-molded manufacture craft, so that moulding material is gone up formation one concentration structure and a microstructured area in first of optical waveguide layer.
In a specific embodiment of the present invention; In response to the slimming press-key structure; Via optical waveguide layer, concentration structure being carried out co-molded with microstructured area and combining, make the type of looking or side light type light emitting diode construction all can reach equal optical property leaded light, optically focused and catoptric arrangement.More in another specific embodiment of the present invention, leaded light characteristic and pressing function are combined as a whole.Therefore, can make button thickness thinner and also make more convenient.
Description of drawings
Fig. 1 is an existing light conducting plate structure sketch map;
The light conducting plate structure schematic perspective view that Fig. 2 makes for a specific embodiment of the present invention;
Fig. 3 is the enlarged drawing of Fig. 2;
The schematic cross-section of the light conducting plate structure that Fig. 4 makes for a specific embodiment of the present invention;
The schematic cross-section of the press-key structure that Fig. 5 to Fig. 8 makes for some specific embodiments of the present invention;
Fig. 9 is the flow chart of a specific embodiment of the present invention.
The main element symbol description
2 LGPs, 4 substrates
6 light guide sections, 8 LED
10 optical waveguide layers, 11 hollow-out parts
12,40 concentration structure 13a vertical planes
16 convex bodys, 18,19 reflector
20 light shield layers, 22 transparent areas
24 separation materials, 26 substrates
28 electroconductive elastic sheets, 30 shell fragment films
32,38 light sources, 34,36 key roof constructions
Embodiment
Shown in the schematic cross-section of three-dimensional exploded view as shown in Figure 2, the partial enlarged drawing of Fig. 3 and Fig. 4, including an optical waveguide layer 10, a concentration structure 12 and a microstructured area 14 according to the molded light guide structure in the specific embodiment of the present invention.Optical waveguide layer 10 can be one have a light conductivity film, thin slice or thin plate, for example PC material LGP or light guiding film can be a for example tabular.Claim in the present invention " optical waveguide layer ", be intended to contain LGP and light-leading film.Concentration structure 12 is positioned on the optical waveguide layer 10, in order to assemble light to the optical waveguide layer 10 that a light source sends, so that optical waveguide layer 10 these light of conduction.Can the light-ray condensing that light source sends be constructed in the optically focused of optical waveguide layer 10 all can be as concentration structure of the present invention.For example; See also the enlarged drawing of a specific embodiment of Fig. 3 demonstration; Concentration structure 12 comprises a vertical plane 13a and a skew surface 13b; The end of vertical plane 13a is positioned on the optical waveguide layer 10, and the end of skew surface 13b and the other end of vertical plane 13a join, and the other end of skew surface 13b extends on the optical waveguide layer 10 with oblique bent mode.Skew surface can be for example little legged protruding inclined-plane.Vertical plane can if light arrives skew surface, can get into optical waveguide layer with the light reflection as the face of injecting from the light of light source.Light source can be for example light-emitting diode.Under relevant considerations such as making mould, the angle that can further make concentration structure is a chamfering.
Concentration structure can comprise for example one first concentration structure and one second concentration structure the two or one; It all can comprise like above-mentioned vertical plane and skew surface; When concentration structure comprise first concentration structure and second concentration structure the two time, the two is separately and with this vertical plane respectively in opposite directions.But concentration structure is not limited to be divided into two parts, also can around and be a ring, vertical plane towards the ring heart.This can comply with required and decide.
According to method of the present invention prepared molded light guide structure can be good for example be applied in the press-key structure, and look required the convex body structure of (or claiming projection or toucher (plunger)) that includes in addition.Convex body 16 shown in Fig. 2 to Fig. 4, it also can use the identical molds moulding material to form with the optical waveguide layer co-molded with concentration structure and microstructured area.And for example shown in Figure 2, in press-key structure, the preferable reflector 18 that more includes with reflection ray when button uses, more concentrates on light and penetrates the district, increases luminous intensity.Still and for example shown in Figure 2, in press-key structure, the preferable light shield layer 20 that also includes in press-key structure, to cover the zone that does not need printing opacity, is provided with transparent area 22 and penetrates for light in light shield layer 20.The position of the corresponding convex body of 22 of transparent areas 16, microstructured area 14.In addition, a separation material 24 can be set, to keep the space between the light guide structure and substrate in the press-key structure.Separation material 24 also can form via co-molded with optical waveguide layer 10.
Again in Fig. 2 and Fig. 4, the part of the optical waveguide layer 10 between the two of first concentration structure of concentration structure 12 and second concentration structure can further remove, that is, and and hollow out, and be hollow-out parts 11.So better optically focused property can be provided.
Fig. 5 to Fig. 8 shows that the molded light guide structure that makes according to a specific embodiment of the present invention is applied to the some specific embodiments in the press-key structure.As shown in Figure 5, the press-key structure that makes according to a specific embodiment of the present invention include a substrate 26, be arranged at molded light guide structure, on the substrate 26 as above-mentioned be positioned at a below of concentration structure 12 light source 32, and one be positioned at the top of optical waveguide layer 10 key roof construction 34.
In one embodiment, the key roof construction of press-key structure can include for example at least one key shape portion, and it has transparent area, penetrates for this light.Existing button patterned layer also includes in the alleged key roof construction of the present invention.Pattern can be for example literal, symbol or figure, according to required and decide, and for example printing capable of using or plated film and reach.Key shape portion is positioned at the microstructured area top, so can accept the light that is reflected or reflected by microstructured area.Between key roof construction 34 and molded light guide structure, can be provided with like above-mentioned reflector 18 and light shield layer 20 one or both of.And a convex body 16 can be set, as above-mentioned, it can be arranged in microstructured area 14, forms with optical waveguide layer 10 co-molded.And on substrate 26, an electroconductive elastic sheet 28 (for example metal clips) can be set, and be positioned on the substrate 26 of convex body 16 belows, can be via a shell fragment film 30 for example to be fixed on the substrate 26.A reflector 19 can be set in substrate 26 tops in addition, reflex to molded light guide structure will penetrate toward the light of substrate 26.26 of substrates can comprise a printed circuit board (PCB), and have printed circuit.
As shown in Figure 5, light source 32 be arranged on the substrate 26 and the below that is positioned at concentration structure 12 so that light to concentration structure 12 to be provided, among this embodiment, concentration structure 12 includes first concentration structure and second concentration structure.Have the enough spaces space of deflection (or be called) between first concentration structure and second concentration structure; When being pressed to hold button (; When convex body 16 is pressed into electroconductive elastic sheet 28) with concentration structure 12 move toward one another and overlapping light source 32 is avoided mutual bump.And when optical waveguide layer 10 has like above-mentioned hollow-out parts 11, allow that the space that light source 32 rises is more abundant, therefore, the design of press-key structure integral thickness can be thinner.
And for example shown in Figure 5, light source 32 is arranged on the substrate 26, and when concentration structure 12 was merely single first concentration structure or single second concentration structure, light source 32 can be positioned at a side-lower of this concentration structure.
Above-mentioned light source 32 is the situation of looking the type light source on, from the light that upper surface penetrates, inject by the vertical plane of concentration structure 12, with light-ray condensing in optical waveguide layer 10 with leaded light.
And Fig. 6 display light source 38 is positioned at a specific embodiment of a side of concentration structure 40.Light source 38 is a side light type light source, from the light that a side penetrates, inject by the vertical plane of concentration structure 40, with light-ray condensing in optical waveguide layer 10 with leaded light.
Fig. 7 shows the specific embodiment of looking type light source 32 in the use like Fig. 5, but key roof construction 36 can include for example a touch panel and a button design layer.The button design layer provides the button of being desired pattern, between touch panel and optical waveguide layer 10.The button design layer includes transparent area, can supply light to penetrate.Preferable microstructured area 14 tops that are positioned at of transparent area.Another aspect is that the key roof construction can include a touch panel and a display panels.Display panels is between touch panel and optical waveguide layer, so that the button pattern to be provided.So, can not need the setting of convex body 16; And can not have settings such as electroconductive elastic sheet, shell fragment film, printed circuit on the substrate 26, but still a reflector 19 can be set.
Fig. 8 shows that also one uses the specific embodiment like the press-key structure of the above-mentioned key roof construction 36 that comprises touch panel, but uses the situation of the light source 38 of side light type.
According to a specific embodiment of the method for manufacturing light guide structure of the present invention, see also the flow chart of Fig. 9.At first, carrying out step 101 and 102 provides an optical waveguide layer and a moulding material is provided; Carry out step 103 then optical waveguide layer and moulding material are carried out a co-molded manufacture craft, so that moulding material forms a concentration structure and a microstructured area on optical waveguide layer.More in detail; The moulding material filling is had in the mould of die cavity of the concentration structure desired and microstructured area shape in one; With an optical waveguide layer pressing; So that the moulding material in the die cavity solidifies, and concentration structure and microstructured area moulding and while are combined closely via irradiation (for example irradiation ultraviolet radiation) or heating with optical waveguide layer.Can optionally further make moulded work carry out drying (when using the irradiation ultraviolet radiation curing molding, often needing drying steps).Remove mould then, obtain molded light guide structure.
Wherein, when needing being provided with of convex body, can be when forming concentration structure and microstructured area, also use moulding material on optical waveguide layer (with concentration structure and microstructured area with one side) form a convex body structure.In addition a reflector or light shield layer can be set on the another side of optical waveguide layer, or the two is provided with all.For example printing capable of using or plated film mode form reflector or light shield layer.A support plate capable of using again to be carrying molded light guide structure, at follow-up this support plate that removes again when carrying out application assembling such as button.
And in touch-tone press-key structure, can be further one circuit board module being set in the side of the concentration structure of optical waveguide layer, circuit board module comprises a printed circuit, a light supply apparatus, a conductive spring plate, an and shell fragment film and other parts of desiring.
According to a specific embodiment, the method for manufacturing light guide structure of the present invention can further comprise a die-cut manufacture craft, removes with the other part of concentration structure that is positioned at optical waveguide layer, forms hollow-out parts.Moreover, use method of the present invention, on making; Can on a sheet of optical waveguide layer, carry out the co-molded of a plurality of concentration structures, microstructured area and/or convex body, obtain a plurality of molded light guide structures, die-cut again profile; Obtain the molded light guide structure of single separation, very convenient.And hollow-out parts is die-cut, then can be combined into a die-cut manufacture craft with the die-cut manufacture craft of the profile that forms light guide structure, with the making of convenient light guide structure.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. method of making light guide structure comprises:
One optical waveguide layer is provided, has first and second;
One moulding material is provided, and this moulding material has light transmission after solidifying; And
This optical waveguide layer and this moulding material are carried out a co-molded manufacture craft, so that this moulding material is in this first a last concentration structure and the microstructured area of forming of this optical waveguide layer.
2. the method for manufacturing light guide structure as claimed in claim 1, wherein, when forming this concentration structure and this microstructured area, other uses this first last the form convex body structure of this moulding material in this optical waveguide layer.
3. the method for manufacturing light guide structure as claimed in claim 1 further is provided with a reflector on this second of this optical waveguide layer.
4. the method for manufacturing light guide structure as claimed in claim 1 further is provided with a light shield layer on this second of this optical waveguide layer.
5. the method for manufacturing light guide structure as claimed in claim 1, wherein this co-molded manufacture craft comprises the moulding step that is heating and curing.
6. the method for manufacturing light guide structure as claimed in claim 1, wherein this co-molded manufacture craft comprises an irradiation ultraviolet radiation curing molding step.
7. the method for manufacturing light guide structure as claimed in claim 1, wherein this co-molded manufacture craft comprises an irradiation ultraviolet radiation curing molding step and a drying steps.
8. the method for manufacturing light guide structure as claimed in claim 1 further comprises a die-cut manufacture craft, removes with the other part of this concentration structure that is positioned at this optical waveguide layer.
9. the method for manufacturing light guide structure as claimed in claim 1 further comprises a die-cut manufacture craft, simultaneously the part that is positioned at this concentration structure side of this optical waveguide layer is removed and forms the profile of this light guide structure.
10. the method for manufacturing light guide structure as claimed in claim 2, further this first the side in this optical waveguide layer is provided with a circuit board module, and this circuit board module comprises printed circuit, light supply apparatus, conductive spring plate and shell fragment film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106166500A CN102568901A (en) | 2010-12-31 | 2010-12-31 | Method for manufacturing light guide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106166500A CN102568901A (en) | 2010-12-31 | 2010-12-31 | Method for manufacturing light guide structure |
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| Publication Number | Publication Date |
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| CN102568901A true CN102568901A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106166500A Pending CN102568901A (en) | 2010-12-31 | 2010-12-31 | Method for manufacturing light guide structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832068A (en) * | 2012-08-24 | 2012-12-19 | 鸿富锦精密工业（深圳）有限公司 | Key device and light guide member layer |
| CN104347300A (en) * | 2013-08-02 | 2015-02-11 | 扬升照明股份有限公司 | Luminous keyboard |
| CN107479769A (en) * | 2017-09-26 | 2017-12-15 | 鹤山市意达电子薄膜器件有限公司 | One kind uses self-luminous touch control panel made of thin-film light emitting circuit |
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| US20080089050A1 (en) * | 2006-10-13 | 2008-04-17 | Hon Hai Precision Industry Co., Ltd. | Keypad light guide with lined apertures and process for making keypad light guide |
| CN201117495Y (en) * | 2007-11-22 | 2008-09-17 | 毅嘉科技股份有限公司 | Press key panel structure possessing lateral illumination press key surface |
| CN201352515Y (en) * | 2009-01-24 | 2009-11-25 | 骏熠电子科技(昆山)有限公司 | Push-button module with light conducting function |
| CN101894697A (en) * | 2009-05-18 | 2010-11-24 | 阿尔卑斯电气株式会社 | Key board unit |
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2010
- 2010-12-31 CN CN2010106166500A patent/CN102568901A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080089050A1 (en) * | 2006-10-13 | 2008-04-17 | Hon Hai Precision Industry Co., Ltd. | Keypad light guide with lined apertures and process for making keypad light guide |
| CN201117495Y (en) * | 2007-11-22 | 2008-09-17 | 毅嘉科技股份有限公司 | Press key panel structure possessing lateral illumination press key surface |
| CN201352515Y (en) * | 2009-01-24 | 2009-11-25 | 骏熠电子科技(昆山)有限公司 | Push-button module with light conducting function |
| CN101894697A (en) * | 2009-05-18 | 2010-11-24 | 阿尔卑斯电气株式会社 | Key board unit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832068A (en) * | 2012-08-24 | 2012-12-19 | 鸿富锦精密工业（深圳）有限公司 | Key device and light guide member layer |
| CN104347300A (en) * | 2013-08-02 | 2015-02-11 | 扬升照明股份有限公司 | Luminous keyboard |
| CN104347300B (en) * | 2013-08-02 | 2017-01-18 | 扬升照明股份有限公司 | Luminous keyboard |
| US9704671B2 (en) | 2013-08-02 | 2017-07-11 | Young Lighting Technology Inc. | Luminous keyboard |
| CN107479769A (en) * | 2017-09-26 | 2017-12-15 | 鹤山市意达电子薄膜器件有限公司 | One kind uses self-luminous touch control panel made of thin-film light emitting circuit |
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Application publication date: 20120711 |