CN106935979A - NFC antenna and its manufacture method - Google Patents
NFC antenna and its manufacture method Download PDFInfo
- Publication number
- CN106935979A CN106935979A CN201610227954.5A CN201610227954A CN106935979A CN 106935979 A CN106935979 A CN 106935979A CN 201610227954 A CN201610227954 A CN 201610227954A CN 106935979 A CN106935979 A CN 106935979A
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- CN
- China
- Prior art keywords
- core
- terminal component
- antenna
- nfc
- antenna element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
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- Details Of Aerials (AREA)
Abstract
The present invention discloses a kind of NFC antenna and its manufacture method, and it includes：Terminal component, the both ends and bottom surface for being embedded in core expose from the core；Antenna element, the central portion and both ends for being wound in the core is connected with terminal component, wherein, the core is molded by sintering, and integrally formed with the terminal component.
Description
Technical field
The present invention relates to a kind of NFC antenna and its manufacture method.
Background technology
Recently, by commercialized near-field communication NFC (Near Field Communication) antenna miniaturization
During use magnet coil, in the case where the magnet coil with predetermined shape is wrapped in into ferrite core, therefore, to assure that
Equivalent to the thickness of the electrode pad of the diameter (about 0.12mm) of coil.
Therefore, silver paste is laminated in after coil, it is necessary to form electrode pad with silver-plated mode and realize core and substrate most
Small spacing (0.15mm).
But, during plating, produce plating spot and plating leakage etc. bad, and exist and be difficult to ensure that core and mainboard most
The problem of small spacing.
And then, by being laminated silver paste and in the case that silver-plated mode forms electrode pad, there is manufacturing cost rising
Problem.
[prior art literature]
[patent document]
Korean Patent Laid the 2015-0131922nd
The content of the invention
The present invention provides a kind of NFC antenna and its manufacture method that can reduce bad generation.
The NFC antenna of an embodiment of the invention includes：Terminal component, is embedded in the both ends and bottom surface of core from institute
State core exposure；Antenna element, the central portion and both ends for being wound in the core is connected with terminal component, wherein, the core passes through
Sinter and be molded, and it is integrally formed with the terminal component.
According to the present invention, with the effect that can reduce bad generation.
Brief description of the drawings
Fig. 1 is the stereogram of the NFC antenna for showing an embodiment of the invention.
Fig. 2 is the front elevation of the NFC antenna for showing an embodiment of the invention.
Fig. 3 is the core and the explanatory diagram of terminal component for illustrating the NFC antenna of an embodiment of the invention.
Fig. 4 and Fig. 5 are the explanatory diagrams for illustrating the operation that core and terminal component is integrally formed.
Fig. 6 is the explanatory diagram for illustrating the operation for winding antenna element.
Fig. 7 is the explanatory diagram for illustrating the state for being formed with cover.
Reference numeral
100：NFC antenna 120：Core
140：Terminal component 160：Antenna element
180：Cover
Specific embodiment
Hereinafter, the form that is preferable to carry out of the invention is illustrated referring to the drawings.But, embodiment of the invention can be with
It is changed into various different shapes, and the scope of the present invention is not limited to the embodiment of following explanation.Also, embodiment of the invention
There is provided to carry out more complete explanation to the personnel that there is general knowledge in correlative technology field.In order to more clearly carry out
Illustrate, shape and size of the inscape in accompanying drawing etc. may be exaggerated.
Fig. 1 is the stereogram of the NFC antenna for showing an embodiment of the invention, Fig. 2 be show it is of the invention
The front elevation of the NFC antenna of one embodiment, Fig. 3 is the core and end for illustrating the NFC antenna of an embodiment of the invention
The explanatory diagram of subassembly.
Referring to figs. 1 to Fig. 3, the NFC antenna 100 of an embodiment of the invention is configured in one example
Including：Core 120, terminal component 140, antenna element 160 and cover 180.
Core 120 is molded by the powder comprising Ferrite Material by sinter molding.Used as an example, core 120 can be by
Ferrite (ferrite) material or ferrite mixing material are formed.
The aerial coil groove 122 for winding antenna element 160 is formed with core 120.That is, the both ends of core 120 cut
Area is more than the sectional area at the position for being formed with antenna spiral groove 122.
Used as an example, core 120 can be the lineal hexahedral shape for being formed with antenna spiral groove 122.
Core 120 plays a part of to guide magnetic field, and it forms following shape：Common magnetic flux path is provided and whirlpool can be minimized
The loss of electric current (eddy current), and emission efficiency is not reduced
Terminal component 140 is embedded in the both ends of core 120, and bottom surface exposes from the bottom surface of core 120.In addition, in core 120
During shaping, terminal component 140 is integrally formed with core 120.Used as an example, terminal component 140 is arranged on for making core 120
The mould 10 (reference picture 4) of sinter molding, accordingly terminal component 140 be embedded in core 120.
Also, terminal component 140 is arranged at core 120 in the way of being arranged in the outside of antenna spiral groove 122.
Also, terminal component 140 includes：Tabs 142, its bottom surface exposes from the bottom surface of core 120；Bending section 144, from piece
The bending two ends in shape portion 142 are formed and increase the adhesion with core 120.
Also, bending section 144 can be formed as stepped and be separated with core 120 with slowing down.
In addition, portion of terminal 140 is formed by metal material and is molded by means of punch process.
Also, the thickness from the exposed part of core 120 of terminal component 140 can be about 0.15mm.
And then, terminal component 140 can be electrically connected with mainboard (not shown), and for example terminal component 140 can pass through
Solder bond is in the connection electrode of mainboard.
Antenna element 160 is wrapped in the central portion of core 120, and its both ends is connected with terminal component 140.Show as one
Example, antenna element 160 is wrapped in the antenna spiral groove 122 of core 120.
In addition, antenna element 160 is formed by conductive metallic material, and can be wrapped in the way of with coil shape
Antenna spiral groove 122.
Antenna element 160 is the part for radiating electric wave, and in order that the radiation of electric wave is successfully carried out, can be wrapped in
The outer surface of core 120.Used as an example, the winding number of times of antenna element 160 can determine according to the resonant frequency of NFC antenna
It is fixed, to receive and dispatch the signal of 13.56MHz frequency bands.
Also, the both ends of antenna element 160 can be connected by welding manner with terminal component 140.
Also, antenna element 160 is separated by preset space length and arranges from the upper surface of mainboard.That is, the diameter of antenna element 160
Be formed as smaller than the thickness of terminal component 140, arranged such that it is able to make antenna element 160 be separated by from mainboard.
Cover 180 is formed at the outer surface of core 120 and the embedded antenna element 160 for being wound in core 120.Cover 180
Can be formed by synthetic resin material, as an example, can be formed by resin material.
As an example, in the way of cover 180 can be to bury the antenna element 160 for being arranged in the upper surface of core 120
It is formed in the upper surface of core 120.It is however not limited to this, it is also possible to it is formed on whole core 120 and buries whole antenna element
160。
Cover 180 is played while antenna element 160 is insulated, and protects the effect of antenna element 160.
Cover 180 can be formed by the following method：It is solidified to form after epoxy resin is coated, or in core
Coating is solidified to form after being mixed with epoxy resin and the magnetic ferritic fluid resin of tool on 120.
As set forth above, it is possible to be based on the terminal component 140 integrally formed with the core 120 being molded by sintering and reduce
Bad generation.
That is, the terminal component caused by plating bad (plating spot and plating leakage) can be prevented by omitting plating process
The 140 bad generation of formation.Accordingly, the minimum standoff distance of antenna element 160 and mainboard can stably be ensured.
And then, can not mode forms terminal component 140 by the way that silver paste layer is folded and silver-plated etc., it is possible to which reduction is manufactured into
This.
The manufacture method to the NFC antenna according to an embodiment is illustrated referring to the drawings.
Fig. 4 and Fig. 5 are the explanatory diagrams for illustrating the operation that core and terminal component is integrally formed, and Fig. 6 is for saying
The explanatory diagram of the operation of bright winding antenna element, Fig. 7 is the explanatory diagram for illustrating the state for being formed with cover.
First, though not shown, terminal component 140 can be molded by punch forming.Terminal component 140 can be by gold
Category material is formed, and can have the thickness of about 0.15mm.
And then, as shown in fig. 6, terminal component 140 can include：Tabs 142, with plate shape；Bending section 144, from
The bending two ends of tabs 142 are formed.Also, for the adhesion increased and between core 120, bending section 144 can be formed as
It is stepped.
Then, as shown in figure 4, terminal component 140 is fixedly installed on into the mould 10 for forming core.Portion of terminal is being set
After part 140, the ferrite powder for forming core 120 is filled in mould 10.
Then, as shown in figure 5, while applying pressure to ferrite powder by means of pressurization part 12, being heated, by
Sintering circuit forming core 120.Now, terminal component 140 is arranged on mould 10, it is possible to so that the sheet of terminal component 140
Portion 142 is from the integrally formed terminal component 140 of the exposed mode of core 120 and core 120.
The insertion groove that the plate portion 142 of insertion terminal component 140 can also be formed with one example, in mould 10 (is not schemed
Show).
In addition, only can be formed by ferrite material for forming the ferrite powder of core 120, or can also be by iron element
Body mixing material is formed.
As described above, being formed with the antenna spiral groove for winding antenna element 160 on the core 120 by sinter molding
122.That is, core 120 can be formed as the sectional area of the sectional area more than the position for forming aerial coil groove 122 at both ends.
In one example, the shape of core 120 can be the lineal hexahedral shape for being formed with antenna spiral groove 122.
Then, as shown in fig. 6, antenna element 160 is wrapped in core 120.That is, antenna element 160 is wound in core 120
Antenna spiral groove 122.
In addition, antenna element 160 is formed by conductive metallic material, and can to form coil shape in the way of be wound
In antenna spiral groove 122.
Also, the winding number of times of antenna element 160 can be determined according to the resonant frequency of NFC antenna, pre- that can receive and dispatch
If the signal of frequency band.
Also, the both ends of antenna element 160 can be engaged in terminal component 140 by welding manner.But it is not limited to
This, the juncture of antenna element 160 and terminal component 140 can be formed by various ways.
Then, as shown in fig. 7, cover 180 is formed at the upper surface of core 120.Cover 180 is wound in core with embedded
The mode of the antenna element 160 of 120 outer surface is formed.That is, for the antenna element of the embedded upper surface for being arranged in core 120
160, cover 180 is formed at the upper surface of core 120.
Cover 180 can be formed by synthetic resin, as an example, by that can be formed with epoxy resin.Cover 180
Can be formed by the following method：It is solidified to form after epoxy resin is coated, or it is mixed in the upper surface coating of core 120
It is solidified to form after closing epoxy resin and the magnetic ferritic fluid resin of tool.
As set forth above, it is possible to be based on the terminal component 140 integrally formed with the core 120 being molded by sintering to reduce
Bad generation.
I.e., it is possible to pass through to omit the terminal component 140 that plating process prevents caused by plating bad (plating spot and plating leakage)
The bad generation of formation.Accordingly, the minimum standoff distance of antenna element 160 and mainboard can stably be ensured.
And then, can not mode forms terminal component 140 by the way that silver paste layer is folded and silver-plated etc., it is possible to which reduction is manufactured into
This.
More than, one embodiment of the invention has been described in detail, but interest field not limited to this of the invention, and
And in the personnel that correlative technology field has general knowledge, the scope of technological thought of the invention can not departed from
It is interior, various modifications and deformation are carried out, this is self-evident.
Claims (16)
1. a kind of NFC antenna, it is characterised in that including：
Core；
Terminal component, is embedded in the both ends of the core, and bottom surface exposes from the core；
Antenna element, is wound in the central portion of the core, and both ends are connected with terminal component；
Cover, is formed at the outer surface of the core and buries the antenna element.
2. NFC antenna as claimed in claim 1, it is characterised in that
The antenna spiral groove for winding the antenna element is formed with the core, the terminal component is arranged in the antenna spiral
The outside of groove.
3. NFC antenna as claimed in claim 1, it is characterised in that
The terminal component includes：
Tabs, its bottom surface is exposed to the outside of core；
Bending section, is bent to form from the both ends of the tabs and increases the adhesion with the core.
4. NFC antenna as claimed in claim 1, it is characterised in that
The terminal component is arranged at mould and integrally formed with the core when the core passes through sinter molding.
5. NFC antenna as claimed in claim 1, it is characterised in that
The terminal component is formed by metal material, and is molded by punch process.
6. NFC antenna as claimed in claim 1, it is characterised in that
The core is molded by the powder comprising ferrite material by sinter molding.
7. NFC antenna as claimed in claim 1, it is characterised in that
The cover is formed by synthetic resin material.
8. NFC antenna as claimed in claim 1, it is characterised in that
The antenna element is formed by conductive metallic material, and the core is wound in the way of with coil shape.
9. a kind of manufacture method of NFC antenna, it is characterised in that comprise the following steps,
Terminal component is molded by punch forming；
After the terminal component is arranged on mould, with by sintering make the terminal component by embedded mode make core into
Type；
Antenna element is wound in the central portion of the core；And
Cover is formed so that the antenna element is buried.
10. the manufacture method of NFC antenna as claimed in claim 9, it is characterised in that
The terminal component is embedded in the core with part from the exposed method of the core.
The manufacture method of 11. NFC antennas as claimed in claim 9, it is characterised in that
The terminal component includes：
Tabs, its bottom surface is exposed to the outside of the core；
Bending section, is bent to form from the both ends of the tabs and increases the adhesion with the core.
The manufacture method of 12. NFC antennas as claimed in claim 9, it is characterised in that
The bending section is prevented from core separation with stepped formation with the sinter molding of the core.
The manufacture method of 13. NFC antennas as claimed in claim 9, it is characterised in that
The core is molded by the powder of ferrite material by sinter molding.
The manufacture method of 14. NFC antennas as claimed in claim 9, it is characterised in that
The terminal component is formed by metal material, and is molded by punch process.
The manufacture method of 15. NFC antennas as claimed in claim 9, it is characterised in that
The cover is formed by synthetic resin material.
The manufacture method of 16. NFC antennas as claimed in claim 9, it is characterised in that
The antenna element is formed by conductive metallic material, and to form coil shape in the way of be wound in the core.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2015-0189508 | 2015-12-30 | ||
| KR1020150189508A KR101751141B1 (en) | 2015-12-30 | 2015-12-30 | NFC antenna and method for manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106935979A true CN106935979A (en) | 2017-07-07 |
Family
ID=59282301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610227954.5A Pending CN106935979A (en) | 2015-12-30 | 2016-04-13 | NFC antenna and its manufacture method |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101751141B1 (en) |
| CN (1) | CN106935979A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202384498U (en) * | 2011-10-06 | 2012-08-15 | 日立金属株式会社 | Coil part for antenna |
| CN103165260A (en) * | 2011-12-15 | 2013-06-19 | 胜美达集团株式会社 | Coil component |
| US20160372830A1 (en) * | 2015-06-18 | 2016-12-22 | Samsung Electro-Mechanics Co., Ltd. | Chip antenna and method of manufacturing the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1270168B1 (en) * | 2001-06-25 | 2006-02-22 | The Furukawa Electric Co., Ltd. | Chip antenna and method of manufacturing the same |
| JP5645100B2 (en) * | 2010-01-06 | 2014-12-24 | 日立金属株式会社 | ANTENNA DEVICE AND COMMUNICATION DEVICE USING THE SAME |
-
2015
- 2015-12-30 KR KR1020150189508A patent/KR101751141B1/en active IP Right Grant
-
2016
- 2016-04-13 CN CN201610227954.5A patent/CN106935979A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202384498U (en) * | 2011-10-06 | 2012-08-15 | 日立金属株式会社 | Coil part for antenna |
| CN103165260A (en) * | 2011-12-15 | 2013-06-19 | 胜美达集团株式会社 | Coil component |
| US20160372830A1 (en) * | 2015-06-18 | 2016-12-22 | Samsung Electro-Mechanics Co., Ltd. | Chip antenna and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101751141B1 (en) | 2017-06-26 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190829 Address after: Han Guo Jingjidao Applicant after: Company WITS Address before: Gyeonggi Do Korea Suwon Applicant before: Samsung Electro-Mechanics Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170707 |
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| RJ01 | Rejection of invention patent application after publication |