CN102299397B - Antenna assembly and preparation method thereof - Google Patents
Antenna assembly and preparation method thereof Download PDFInfo
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- CN102299397B CN102299397B CN201010212942.8A CN201010212942A CN102299397B CN 102299397 B CN102299397 B CN 102299397B CN 201010212942 A CN201010212942 A CN 201010212942A CN 102299397 B CN102299397 B CN 102299397B
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Abstract
The present invention discloses a kind of antenna assembly and preparation method thereof.This antenna assembly makes with in-molded (IMF) method, and have the antenna diagram being formed at a plastic surface, this antenna pattern and is fixed on the electric-conductor electric coupling in this plastic.A kind of manufacture method of antenna assembly is before the injection step of in-molded (IMF) processing procedure, insert an electric-conductor in a mold, make the fixing of this electric-conductor and the shaping of this plastic be integrated into one, therefore this IMF antenna pattern is able to produce electrical ties with an external circuit.
Description
Technical field
The present invention relates to a kind of antenna assembly and preparation method thereof.Specifically, the antenna assembly utilizing in-molded processing procedure to make about a kind of and method thereof.
Background technology
In-mold decoration (In-Mold Decoration, IMD) be the surface decoration technique be in fashion at present, it is mainly used in the making of the incrustation of household appliances and the outward appearance article such as panel, mark of the multiple household electrical appliances such as functional panel, handset viewing window eyeglass and shell, washing machine control console, refrigerator control desk, aircondition control desk, automobile instrument panel.The technical essential of in-mold decoration is a figuratum film of print to be put in mould to carry out injection moulding (Injection Molding, also known as ejection formation) action.When after plastic parts moulding, the figuratum film of above-mentioned band can combine together with plastics, makes pattern be presented on the surface of plastic.The film that this kind of processing procedure uses roughly is made up of following three-decker layer: base material, ink and high-abrasive material.Wherein this base material is used for carrying ink and high-abrasive material, it is membranaceous or sheet, material can with general polyethylene terephthalate (polyethylene terephthalate, PET) or Merlon (polycarbonate, PC).Above-mentioned ink is used for forming the figure that will present, or makes plastic present the diversified product appearances such as metal, leather, wood grain, bag.High-abrasive material then can be positioned at the outermost of integral article after shaping, to provide wear-resisting, anti-scratch, the effect such as antireflection.
Current industry has utilized above-mentioned existing decoration technique inside mold to form printing type aerial on plastic surface, need to use antenna assembly to transmit with on the small-sized of Received signal strength or micro device to be applied in, such as various hand held device, wireless appliance or RF identification label (RFID) etc.The printing ink that only needs the colour used in original decoration technique inside mold to ripple in its practice makes electrically conductive ink into, then prints off antenna pattern at film surface.The antenna of above-mentioned printing-type has many advantages in related application, such as can the performance parameter such as the resonance frequency of accurate adjustment antenna, Q value and impedance, to reach the desired value needed for antenna induction or transmission; The shape of aerial coil, the number of turn, antenna size and wire diameter thickness etc. can be changed arbitrarily, to adapt to the requirement of owner's Surface Machining; Be useful in various different existing base material and plastics, its applicability is higher than pillar antenna or Wound-rotor type antenna.
For adopting above-mentioned in-mold decoration processing procedure for the practice of plastic surface formation printing type aerial, the wafer module in article and the connection between antenna pattern are the key links in its manufacturing technology.In existing printing type aerial technology, between printing type aerial and circuit board, general conducting resinl bonding or the method for directly pressing of adopting sets up electrical ties more.So, cannot carry out in the occasion that this practice is covered by between film and plastic surface at antenna pattern.To this, current industry generally (namely after plastic parts moulding) can carry out the link of antenna pattern and wafer after injection moulding processing procedure, as being able to expose from plastic by antenna pattern by opening predefined on plastic, then draws wire to set up link in addition.But this practice needs extra connecting step, and the link reliability set up with this practice is not good, and the design of its connecting structure also will increase the overall desired thickness of plastic, be unsuitable for the needs of electronic device miniaturization now.
Because the shortcomings of above-mentioned prior art, current industry needs the manufacture method improveing existing printing type aerial badly, to reduce the cost of manufacture of antenna assembly and required step, and provides better usefulness and reliability.
Summary of the invention
Because the shortcoming of above-mentioned prior art, disclosed herein a kind of utilize in-molded processing procedure to make antenna assembly and method.This antenna assembly has an antenna pattern, and this antenna pattern is formed in plastic surface in the mode of sticking.This antenna pattern and one is fixed on the electric-conductor electric coupling in plastic, and this electric-conductor also produces electrical ties with its position of exposing in this plastic and an external circuit.
Method of the present invention utilizes the mode first inserting electric-conductor before carrying out injection step and forming plastic in a mold this electric-conductor and plastic to be integrated and is formed, make shaping after the antenna pattern be attached on plastic surface be able to produce electrical ties by this electric-conductor and an external circuit.
The invention provides a kind of antenna assembly, its antenna pattern is attached on plastic surface by in-molded processing procedure together with film, and produces electrical ties via the electric-conductor in plastic and an external circuit.
The invention provides a kind of electric-conductor of antenna assembly, comprise one and have and the couplings coupling end of an antenna pattern electric property coupling and one and the contact site that couples of circuit board; Wherein one end of this contact site and this couplings link, and this contact site and this couplings are an angle, make the end that couples of this couplings form a spacing with a plane of this contact site, it is upturned and extend along the direction away from this contact site from this couplings that this couples end.
The invention provides a kind of antenna manufacturing method of novelty, one electric-conductor is first placed in mould and makes it shaping together with plastic by it before carrying out injection step, the antenna pattern electric coupling on this electric-conductor and plastic surface after shaping, and this electric-conductor some expose in plastic.
The invention has the advantages that, after plastic parts moulding, must not impose extra fabrication steps be again able to produce electrical ties with external circuit to make antenna pattern, and the reliability that antenna assembly and external circuit couple can be improved.
Another advantage of the present invention is, the practice shaping together with plastic for electric-conductor can be reduced the overall desired thickness of plastic by it, and this electric-conductor can not cause obvious projection on plastic surface.
After consulting following detailed execution mode and relevant diagram and claim, reader more will can understand other object, feature and advantage of the present invention.
Accompanying drawing explanation
Consult follow-up accompanying drawing and describe and can more understand system and method for the present invention.Wen Zhongwei arranges in detail and nonrestrictive embodiment then please refer to the description of this subsequent drawings.Element in graphic might not meet ratio, but depicts principle of the present invention in the mode emphasized.In the drawings, identical element marks corresponding part in difference diagram.
Fig. 1 is the vertical view according to figure on the embodiment of the present invention one film and its;
Fig. 2 a-2c is the schematic diagram forming three-dimensional film according to the embodiment of the present invention in mould punching mode;
Fig. 3 is the schematic diagram carrying out trimming process according to the embodiment of the present invention one film;
Fig. 4 is placed according to the embodiment of the present invention one film the schematic diagram that mould carries out ejection formation step;
Fig. 5 is the schematic diagram be attached on according to the embodiment of the present invention one film on plastic;
Fig. 6 is the detail structure chart according to the embodiment of the present invention one antenna assembly;
Fig. 7 a-7c is the detail structure chart according to the embodiment of the present invention one electric-conductor; And
Fig. 8 is the Making programme figure according to embodiment of the present invention antenna assembly.
Embodiment
The invention discloses and a kind ofly utilize in-molded processing procedure to form the method for antenna assembly on a plastic surface.As shown in Figure 1, it is a film and the vertical view of figure on it according to an embodiment of the invention, and simultaneously with reference to the flow chart of steps of the making of antenna assembly shown in figure 8.First, in the first step 1001 of method, the face of a film 100 stamps the antenna pattern 101 preset.This antenna pattern 101 is as the transmission end of antenna assembly and receiving terminal, and as an antenna loop, it can transmit or receive desired electromagnetic signal.This printing step optionally comprises prints the follow-up decorative pattern 103 that will be presented on plastic, as the appearance design pattern of product or the mark of manufacturer.Film 100 is used for carrying and forms above-mentioned antenna pattern 101 and the ink required for decorative pattern 103, and it can be attached on plastic on the surface together with these figures after processing procedure completes.Wherein this antenna pattern 101 is printed with electrically conductive ink (conductive ink) and is formed, and carrys out transmission of signal to form the slimming skin antenna with conductivity.This decorative pattern 103 with the general printing ink that ripples be printed to the pattern of wish performance and color, as pattern mark, or give the diversified appearance of plastic and texture.
Follow-up injection molding manufacture procedure is applicable to facilitate owing to must have the three-dimensional shape meeting plastic external form with the film 100 of ink pattern, therefore in the second step 1002 of method according to an embodiment of the invention, complete film 100 that figure prints must again through one stereo shaping (3D forming) step to be pressed into predetermined film shape.As shown in figs. 2 a-2 c, it depicts the schematic diagram forming three-dimensional film 100 ' according to one embodiment of the invention in mould punching mode.First in fig. 2 a, a film 100 antenna pattern 101 and decorative pattern 103 have been pre-formed with.Should can be placed into have in predetermined moulding diel 105 with the film 100 of antenna pattern 101 and decorative pattern 103 and suppress, as shown in Figure 2 b.By the pressing of upper and lower two moulds, original can be pressed in plane film 100 have for moulding three-dimensional film 100 '.After compacting, the ink pattern on original plane film 100 can be moulding and become with this, as shown in Figure 2 c, the design being therefore initially at antenna pattern and decorative pattern must consider shaping rear the brought change of film stereo in advance.Notably the stereo shaping step of film 100 also can adopt the mode beyond the mould punchings such as vacuum, hydraulic pressure, superhigh pressure to carry out according to an embodiment of the invention.Or, in some occasion, as position plastic presenting pattern be a tabular surface time, film 100 also directly may be attached on plastic without stereo shaping step in a planar form.
After the film 100 ' completing spatially shape, afterwards trimming (trimming) step 1003 is carried out to film 100 ' and excise the unnecessary part of film 100 ' around, as shown in Figure 3.The external form that the part that trimming process can cut away will be sticked depending on actual film 100 ' and scope, it can adopt the mode such as die-cut to realize.After trimming process, the three-dimensional film 100 ' with ink pattern just completes.This film 100 ' can by injection step close adhesion afterwards on the surface of formed plastic.Notably above-mentioned film diagram is only for presenting, and not drawn by actual ratio.Some part in graphic because the reason illustrated may be exaggerated is emphasized.
Before carrying out last ejection formation (i.e. injection moulding) step 1004, as shown in Figure 4, film 100 ' can first be placed on a wherein mold 107a of its external form identical.In figure the hollow part 109 of the involutory rear centre of mold 107a and bed die 107b be injection step for the plastic parts shape that formed.But, in order to make the antenna pattern 101 on film 100 ' can couple with other external circuits after binding with plastic, the inventive method first can insert an electric-conductor 111 to carry out injection moulding processing procedure together with film 100 ' before carrying out ejection formation in hollow part 109.This electric-conductor 111 is arranged on the position that can couple with the antenna pattern 101 on film 100 ', and this electric-conductor 111 of part contacts with bed die 107b.
In ejection formation step 1004, plastics can inject hollow part 109 from the inlet 113 mould, and between shaping period, plastics can be full of whole hollow part 109 and bind with the film 100 ' on mould.So, as shown in Figure 5, when after the shaping demoulding of plastic 115, film 100 ' and the antenna pattern 101 on it and decorative pattern 103 all can be attached on plastic 115 also to become to be integrated with it.This electric-conductor 111 has part can be arranged in this plastic 115 and couples with the antenna pattern 101 on plastic 115 surface, and another part then can expose from the another side of plastic 115, in subsequent embodiment, have further detailed description to it.
Please refer to Fig. 6 now, it depicts the detail structure chart according to the embodiment of the present invention one antenna assembly.As shown in the figure, antenna assembly is based on antenna pattern 101 according to an embodiment of the invention, as aerial loop structure, it utilizes electrically conductive ink first to print before injection moulding forms plastic and is formed on film 100 ', film 100 ' also may be printed the decorative pattern 103 that will be formed on plastic surface.After injection step, film 100 ' and on the antenna pattern 101 printed and decorative pattern 103 can bind on formed plastic 115 because of the hot pressing effect that bring of injection moulding.In one embodiment, this film 100 ' can be a transparent protective film, and the decorative pattern 103 that it is printed can turn on the outer surface being attached to plastic 115 along with injection step, gives the diversified appearance of plastic and texture.Film 100 ', then simultaneously as the protective layer on plastic 115 surface, protects the antenna pattern 101 in it not to be subject to environmental damage with decorative pattern 103.In embodiments of the present invention, the material of film 100 ' is including but not limited to Merlon (polycarbonate, PC), polyethylene terephthalate (polyethylene terephthalate, PET).In injection moulding processing procedure, the material of plastic used comprises Merlon (polycarbonate, PC), acrylonitrile-butadiene-styrene copolymer (acrylonitrile-butadiene-styrene copolymers ABS), thermoplastic polyurethane (thermoplastic polyurethane, TPU), polymethyl methacrylate (Polymethyl methacrylate, PMMA), polybutylene terephthalate (PolybutyleneTerephthalate, PBT) or its combination.
On the other hand, electric-conductor 111 be insert before carrying out injection step in mould shaping together with plastic 115.In a preferred embodiment, referring to Fig. 7 a-7c, its display is according to the primary structure of electric-conductor in the preferred embodiment of the present invention 111.As shown in the figure, electric-conductor 111 of the present invention has an a couplings 111a and contact site 111b.Couplings 111a one end is connected with contact site 111b one end, and the other end is then one couple end 111c, and it is upturned and extend along away from this contact site direction, itself and antenna pattern electric coupling from couplings that this couples end 111c.Contact site 111b is then a base plane, and it is electrically connected with an external circuit.This couplings 111a and contact site 111b designs in an angle α, makes coupling between end 111c and contact site 111b on this couplings 111a have a preset space length d to exist.This spacing d makes coupling of electric-conductor 111 hold 111c meeting and antenna pattern 101 electric coupling after ejection formation, can not be lofty at plastic 115 excessive surface.Electric-conductor 111 then can be fixed on plastic 115, and the contact site 111b of its part can expose from the another side of plastic 115.Therefore, the size of spacing d can have influence on the exposed of coupling of couplings 111a and antenna pattern 101 and contact site 111b, and it must set accurately depending on plastic 115 and antenna pattern 101 thickness.In a preferred embodiment of the invention, contact site is of a size of the miniaturization size of 2.96mm × 2.46mm, angle α formed by this couplings 111a and contact site 111b is then between 28 ° ~ 32 °, this spacing d then between 1.37mm ~ 1.57mm, to be applied in the compact electronic installation such as hand-hold type or mobile.
As in one embodiment of the invention, plastic 115 can be a cell phone back cover, and this mobile phone color pattern to be presented and skin antenna element (i.e. antenna pattern) are formed in this cell phone back cover by the above-mentioned injection moulding processing procedure of the present invention.In the present embodiment, the contact site 111b of above-mentioned electric-conductor 111 can be a contact pad (contact pad).This contact pad can be exposed from the inner face of cell phone back cover, so with circuit board 117 electric coupling be arranged in hand set machine shell, as the exposed surface of contact site 111b in Fig. 6 contacts with the spring part 119 of its lower circuit board 117.Thus in this way, the skin antenna element in cell phone back cover can be electrically connected to receive or transmission signal via electric-conductor with the circuit board of interior of mobile phone.
Antenna manufacturing method according to an embodiment of the invention can alleviate the shortcoming of the method forming antenna assembly with injection moulding processing procedure.Adopt the mode inserting an electric-conductor before ejection formation forms plastic in advance to make the antenna assembly be coated between film and plastic surface can produce electrical ties with an external circuit according to one embodiment of present invention, do not need to impose extra step again after plastic is shaped and couple to make antenna assembly and external circuit.Method of the present invention is except reducing except fabrication steps, the reliability that antenna assembly and external circuit couple can be improved simultaneously, the design of its structure also can reduce the thickness needed for plastic entirety, and can not form obvious projection on plastic surface, is a tool novelty and creationary invention really.
Embodiment described in literary composition and diagram are available to reader, make it have the understanding of overall property for the variant example structure of the present invention.Those illustrate and illustrate and are not intended to do all elements utilized in the equipment and system of structure described herein or method and feature the description of integrality.Consult specification book of the present invention, exercising ordinary skill of the present invention more will can understand the present invention's other embodiments many.When not departing from scope, displacement and the change of structure and logic in invention, can be carried out.Such as, electric-conductor used in the present invention also may present other shapes when not affecting its function.In addition, diagram of the present invention is only for presenting but not drawing in proportion.Some part in graphic may be exaggerated to be emphasized, and other parts may by simply.Accordingly, disclosure of the present invention ought to be considered as being descriptive and nonrestrictive with diagram, and limited by claim hereinafter.It should be noted that word " comprises " and do not get rid of other element or step, word "a" or "an" is not got rid of multiple.In addition, any element numbers of claim should not be construed as and limits the scope of the invention.
Claims (10)
1. an antenna assembly, comprises:
One film;
One antenna pattern, is formed on the thin film;
One plastic, this film is attached on this plastic to make the one side with this antenna pattern by in-molded processing procedure, makes this antenna pattern between this film and this plastic; And
One electric-conductor, be fixed in this plastic, this electric-conductor has a couplings and a contact site, this couplings and this antenna pattern electric coupling, this contact site of part is out exposed and couple with an external circuit from this plastic, wherein this couplings and this contact site are that an angle makes in this couplings and this antenna pattern couples couples to hold have a spacing between this contact site
Wherein said contact site is a base plane, and outstanding is formed on plastic outer surface, be positioned at plastic with on the surface relative with the surface of antenna pattern of plastic.
2. antenna assembly as claimed in claim 1, wherein the size of this spacing makes coupling of this electric-conductor hold at in-molded rear and this antenna pattern electric coupling.
3. antenna assembly as claimed in claim 1, wherein this antenna pattern is formed with electrically conductive ink.
4., for the electric-conductor in antenna assembly, comprise:
One couplings, has and couples end with one of an antenna pattern electric coupling; And
One contact site, couple with an external circuit, one end of this contact site and this couplings link, and this contact site and this couplings are an angle, the end that couples of this couplings is made to form a spacing with a plane of this contact site, it is upturned and extend along away from the direction of this contact site from this couplings that this couples end
Wherein said contact site is a base plane, and extends up to the outside of the plastic holding this antenna pattern in the side relative with antenna pattern, is formed on plastic outer surface with outstanding.
5. the electric-conductor as described in claim 1 or 4, wherein this contact site is a connection pad, and it produces electric coupling by a conductivity spring part or wiring and this external circuit.
6. the electric-conductor as described in claim 1 or 4, the angle wherein between this contact site and this couplings is 28 ° ~ 32 °.
7. the electric-conductor as described in claim 1 or 4, wherein the spacing coupled between end and contact site plane of this couplings is 1.37mm ~ 1.57mm.
8. antenna assembly as claimed in claim 1, wherein this plastic is the shell of handheld apparatus.
9. a manufacture method for antenna assembly, comprises the following step:
Form an antenna pattern on a film;
Form the three-dimensional film that has this antenna pattern;
This three-dimensional film die-cut;
Making this three-dimensional film and have couplings ejection formation together with the electric-conductor of contact site is a plastic;
Thus this electric-conductor is fixed in this plastic, the couplings of this electric-conductor and this antenna pattern electric coupling, and the contact site of this electric-conductor exposes from this plastic,
Wherein said contact site is a base plane, and outstanding is formed on plastic outer surface, be positioned at plastic with on the surface relative with the surface of antenna pattern of plastic.
10. method as claimed in claim 9, wherein this three-dimensional film can adopt the modes such as vacuum, mould punching, hydraulic pressure, superhigh pressure to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010212942.8A CN102299397B (en) | 2010-06-25 | 2010-06-25 | Antenna assembly and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010212942.8A CN102299397B (en) | 2010-06-25 | 2010-06-25 | Antenna assembly and preparation method thereof |
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| Publication Number | Publication Date |
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| CN102299397A CN102299397A (en) | 2011-12-28 |
| CN102299397B true CN102299397B (en) | 2015-07-29 |
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| CN201010212942.8A Active CN102299397B (en) | 2010-06-25 | 2010-06-25 | Antenna assembly and preparation method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013214909A (en) * | 2012-04-03 | 2013-10-17 | Denso Corp | Vehicle mobile equipment |
| TWI659678B (en) * | 2015-09-15 | 2019-05-11 | 大陸商東莞錢鋒特殊膠黏製品有限公司 | Antenna composite molding structure of mobile electronic device and manufacturing method thereof |
| CN107623173A (en) * | 2017-09-26 | 2018-01-23 | 广东欧珀移动通信有限公司 | Functional unit and mobile terminal |
| CN113705758A (en) * | 2021-09-05 | 2021-11-26 | 上扬无线射频科技扬州有限公司 | RFID tag preparation process |
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| KR100930207B1 (en) * | 2009-03-16 | 2009-12-07 | 삼성전기주식회사 | Method of manufacturing mobile communication terminal, mobile communication terminal case and mobile communication terminal using the same |
| CN101630772A (en) * | 2008-07-18 | 2010-01-20 | 富港电子（东莞）有限公司 | Antenna device and method for manufacturing same |
| KR100944932B1 (en) * | 2009-02-27 | 2010-03-02 | 삼성전기주식회사 | Antenna embeded mobile communication terminal case and method of manufacturing the same, mobile communication terminal |
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2010
- 2010-06-25 CN CN201010212942.8A patent/CN102299397B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630772A (en) * | 2008-07-18 | 2010-01-20 | 富港电子（东莞）有限公司 | Antenna device and method for manufacturing same |
| KR100944932B1 (en) * | 2009-02-27 | 2010-03-02 | 삼성전기주식회사 | Antenna embeded mobile communication terminal case and method of manufacturing the same, mobile communication terminal |
| KR100930207B1 (en) * | 2009-03-16 | 2009-12-07 | 삼성전기주식회사 | Method of manufacturing mobile communication terminal, mobile communication terminal case and mobile communication terminal using the same |
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