CN106299633B - Antenna structure and preparation method thereof for communication module - Google Patents
Antenna structure and preparation method thereof for communication module Download PDFInfo
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- CN106299633B CN106299633B CN201510249454.7A CN201510249454A CN106299633B CN 106299633 B CN106299633 B CN 106299633B CN 201510249454 A CN201510249454 A CN 201510249454A CN 106299633 B CN106299633 B CN 106299633B
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- 238000004891 communication Methods 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 230000035699 permeability Effects 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 claims description 74
- 238000000034 method Methods 0.000 claims description 61
- 230000008569 process Effects 0.000 claims description 38
- 238000003475 lamination Methods 0.000 claims description 33
- 238000007639 printing Methods 0.000 claims description 31
- 238000012545 processing Methods 0.000 claims description 19
- 230000005611 electricity Effects 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000010422 painting Methods 0.000 claims description 8
- 239000003112 inhibitor Substances 0.000 claims description 7
- 238000005245 sintering Methods 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 230000000007 visual effect Effects 0.000 description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 6
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 230000006855 networking Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Abstract
A kind of antenna structure and preparation method thereof for communication module, the antenna structure includes the first, second, third, fourth, the five, the 6th and the 7th magnetic layer of sequential, coiled type conductive pattern is wherein set in the magnetic layer of third, the 4th and the 5th, to constitute a core structure；Multiple first pad electrodes are set in the first magnetic layer, multiple second pad electrodes are set in the 7th magnetic layer, above-mentioned first pad electrode includes one first feed-in pad electrode, one second feed-in pad electrode and multiple illusory pad electrodes；The magnetic layer of third, the 4th and the 5th respectively has one first magnetic permeability, and the first magnetic layer, the second magnetic layer, the 6th magnetic layer and the 7th magnetic layer respectively have one second magnetic permeability, and the first magnetic permeability is greater than or equal to the second magnetic permeability.The present invention uses the material with higher magnetic conductivity in the magnetic layer for including core structure, therefore can promote the inductance value of small sized antenna.
Description
Technical field
The present invention relates to a kind of antenna structures and preparation method thereof, more particularly to a kind of day knot for communication module
Structure and preparation method thereof.
Background technique
Mobile phone or any kind of action communication device, it has also become the portable outfit of modern.Previous mobile communication
The major function of device is only limitted to the function known to masses such as make a phone call, send short message or wireless networking.However, with science and technology
Progress, and the feature easy to carry due to mobile phone, industry started to imagine by it is certain meet daily life needed for function it is whole
It closes on mobile phone, such as contactless smart card.So-called contactless smart card as penetrates the induction mode of short distance
Come so that the chip being arranged in card plays a role.The occasion of contact type intelligent card is applied very in daily life at present
It is more, such as EasyCard, the 7- of implementation PayPass TM and the non-contact credit card of VISA WAVE specification, mass transportation systems
11 icash card, the access card for having ID discriminating function and member card etc..Above-mentioned smart card can provide user in daily life
Aspect many conveniently services, therefore actively research and development integrate these with intelligent card function for various purposes to dealer invariably
It can allow to everybody and be mostly used to bring listening to the mobile phone of phone originally to swipe the card, as electronics goods on portable mobile phone
Coin packet takes mass transportation systems or identification identity.
The above-mentioned mobile phone for having near-field communication technology function, internal usually installing near-field communication aerial (NFC
antenna).However, the existing big many areas of near-field communication aerial is quite big, in the trend of current mobile communication product miniaturization
Under, near-field communication aerial is also required to reduce its size, however, can encounter antenna sense when minimizing near-field communication aerial
It is worth insufficient problem, in addition, engaging between IC chip and the weld pad of near-field communication aerial not enough during miniaturization
It is securely also one of problem.Therefore, how to solve the problems, such as above-mentioned near-field communication aerial miniaturization and become those skilled in the art
Member wishes the important topic solved.
Summary of the invention
In view of the above problems, one embodiment of the invention provides a kind of antenna structure for communication module comprising: one
First magnetic layer；One second magnetic layer is located in the first magnetic layer；One third magnetic layer is located at the second magnetic
On property body layer；One the 4th magnetic layer is located in third magnetic layer；One the 5th magnetic layer is located at the 4th magnetic substance
On layer；One the 6th magnetic layer is located in the 5th magnetic layer；And one the 7th magnetic layer, it is located at the 6th magnetic layer
On；Wherein, coiled type conductive pattern is set in the magnetic layer of third, the 4th and the 5th, and to constitute a core structure, first is magnetic
Multiple first pad electrodes are set on body layer, multiple second pad electrodes, above-mentioned first weld pad electricity are set in the 7th magnetic layer
Pole includes one first feed-in pad electrode, one second feed-in pad electrode and multiple illusory pad electrodes, coiled type conductive pattern
One end be electrically connected the first feed-in pad electrode, and the other end of coiled type conductive pattern is electrically connected the second feed-in weld pad electricity
Pole；Wherein, the magnetic layer of third, the 4th and the 5th respectively has one first magnetic permeability, the first magnetic layer, the second magnetic layer,
6th magnetic layer and the 7th magnetic layer respectively have one second magnetic permeability, and the first magnetic permeability is greater than or equal to the second magnetic permeability,
And second is provided with an illusory conducting wire in magnetic layer, illusory conducting wire is electrically connected above-mentioned illusory pad electrode, wherein this first,
Second magnetic layer can be considered upper layer magnetic layer, and the third, the four, the 5th magnetic layers can be considered middle layer magnetic substance
Layer, the six, the 7th magnetic layers can be considered lower layer's magnetic layer.
Multiple second pad electrode in 7th magnetic layer is electrically insulated with the core structure.
The antenna structure of the communication module includes: one first intermediate magnetic body layer, be located at first magnetic layer and this
Between two magnetic layers；And one second intermediate magnetic body layer wherein should between the 6th magnetic layer and the 7th magnetic layer
Sintering aid or bending inhibitor are added in second intermediate magnetic body layer, the 6th magnetic layer and the 7th magnetic layer, to change
Kind product curvature, and increase production reliability.
First magnetic layer, second magnetic layer, the third magnetic layer, the 4th magnetic layer, the 5th magnetic
Property body layer, the 6th magnetic layer and the 7th magnetic layer be ferritic material composition.
In different situations, first magnetic layer, second magnetic layer, the third magnetic layer, the 4th magnetic
Property body layer, the 5th magnetic layer, the 6th magnetic layer and the 7th magnetic layer are also possible to low-temperature co-burning ceramic material.
One embodiment of the invention provides a kind of antenna structure for communication module comprising: one first magnetic layer；One
Second magnetic layer is located in the first magnetic layer；One third magnetic layer is located in the second magnetic layer；One the 4th
Magnetic layer is located in third magnetic layer；And one the 5th magnetic layer, it is located in the 4th magnetic layer；Wherein,
Three, coiled type conductive pattern is arranged in the 4th and the 5th magnetic layer to be arranged in the first magnetic layer to constitute a core structure
Multiple first pad electrodes, above-mentioned first pad electrode include one first feed-in pad electrode, one second feed-in pad electrode and
Multiple illusory pad electrodes, one end of coiled type conductive pattern are electrically connected the first feed-in pad electrode, and coiled type conductor figure
The other end of case is electrically connected the second feed-in pad electrode；Wherein, an illusory conducting wire is provided in the second magnetic layer, it is illusory to lead
Line is electrically connected above-mentioned illusory pad electrode.
One embodiment of the invention provides a kind of production method of antenna structure for communication module, comprising: with lamination type
Printing process forms one first magnetic layer, wherein including multiple first pad electrodes in the first magnetic layer；It is printed with lamination type
Brush processing procedure forms one second magnetic layer in the first magnetic layer, wherein including an illusory conducting wire, electricity in the second magnetic layer
Property above-mentioned first pad electrode of connecting portion；A third magnetic layer is formed in the second magnetic layer with lamination type printing process
On, it wherein include multiple first linear conductors arranged in parallel in third magnetic layer；One the is formed with lamination type printing process
Four magnetic layers are in third magnetic layer, wherein including multiple via conductors in the 4th magnetic layer；It is printed and is made with lamination type
Journey forms one the 5th magnetic layer in the 4th magnetic layer, wherein including multiple arranged in parallel second in the 5th magnetic layer
Linear conductor, above-mentioned first linear conductor, above-mentioned via conductors and above-mentioned second linear conductor are electrically connected to each other, and are surrounded by
Coiled type conductive pattern, to constitute a core structure；One the 6th magnetic layer is formed in the 5th magnetism with lamination type printing process
On body layer；And one the 7th magnetic layer is formed in the 6th magnetic layer, wherein the 7th magnetic layer with lamination type printing process
In include multiple second pad electrodes.
The third magnetic layer, the 4th magnetic layer and the 5th magnetic layer respectively have one first magnetic permeability, this
One magnetic layer, second magnetic layer, the 6th magnetic layer and the 7th magnetic layer respectively have one second magnetic permeability, should
First magnetic permeability is greater than or equal to second magnetic permeability.
The lamination type printing process includes screen painting and subsequent low-temperature co-sintered ceramics processing procedure.
One first intermediate magnetic body layer is formed between first magnetic layer and second magnetic layer；And form one second
Intermediate magnetic body layer between the 6th magnetic layer and the 7th magnetic layer, wherein in the second intermediate magnetic body layer, this
Sintering aid or bending inhibitor are added in the forming process of six magnetic layers and the 7th magnetic layer, to improve product bending
Degree, and increase production reliability.
The embodiment of the present invention forms the antenna structure for being used for communication module using lamination type printing process, and processing procedure is simpler
Singly and cost is relatively low, and the present invention especially uses the material with higher magnetic conductivity in the magnetic layer for including core structure, because
This can promote the inductance value of small sized antenna.In addition, the present invention is in the magnetic layer of top and/or the magnetic substance under it
Sintering aid or bending inhibitor are added in layer formation process, improve product curvature, and increase the reliability of product.
Be further understood that feature and technology contents of the invention to be enabled, please refer to below in connection with it is of the invention specifically
Bright and attached drawing, however appended attached drawing is only for reference and description, and is not intended to limit the present invention.
Detailed description of the invention
Figure 1A is stereogram exploded view of the one embodiment of the invention for the antenna structure of communication module；
Figure 1B is stereogram exploded view of the one embodiment of the invention for another visual angle of antenna structure of communication module；
Fig. 2A is stereogram exploded view of the one embodiment of the invention for the antenna structure of communication module；
Fig. 2 B is stereogram exploded view of the one embodiment of the invention for another visual angle of antenna structure of communication module；
Fig. 3 A, 3B, 3C and 3D are second pad electrode figure of the one embodiment of the invention for the antenna structure of communication module；
Fig. 4 A is stereogram exploded view of the one embodiment of the invention for the antenna structure of communication module；
Fig. 4 B is stereogram exploded view of the one embodiment of the invention for another visual angle of antenna structure of communication module；
Fig. 5 is flow chart of the one embodiment of the invention for the forming method of the antenna structure of communication module.
[description of symbols]
100: antenna structure
102: the first magnetic layers
104: the first pad electrodes
106: the first feed-in pad electrodes
108: the second feed-in pad electrodes
110: illusory pad electrode
112: first through hole conductor
114: the second magnetic layers
116: illusory conducting wire
118: the second via conductors
130: third magnetic layer
132: the first linear conductors
150: the four magnetic layers
151: the first intermediate magnetic body layers
152: the five magnetic layers
153: the first intermediate throughholes conductors
154: the second linear conductors
155: the second intermediate magnetic body layers
157: the second intermediate throughholes conductors
159: the illusory conducting wire in top
162: the six magnetic layers
164: fifth hole conductor
166: the seven magnetic layers
168: the second pad electrodes
179: third through-hole conductor
Specific embodiment
Illustrate below by specific specific example presently disclosed in relation to " antenna structure for communication module "
Embodiment, the relevant technologies content of the invention, but disclosure of that will be explained in further detail in the following embodiments and the accompanying drawings
The technology scope being not intended to limit the invention.
Embodiment one
Figure 1A is stereogram exploded view of the present embodiment for the antenna structure of communication module, and Figure 1B is the present embodiment for leading to
Believe the stereogram exploded view at another visual angle of antenna structure of module.The present embodiment provides a kind of antenna structures, are used for communication module,
In more detail, induction system of the antenna structure of the present embodiment for wireless communication.Please refer to Figure 1A and Figure 1B, the present embodiment
Antenna structure 100 for communication module includes one first magnetic layer 102, is set on a lower surface of the first magnetic layer 102
Multiple first pad electrodes 104 are set, wherein the first pad electrode 104 includes one first feed-in pad electrode 106, one second feed-in
Pad electrode 108 and multiple illusory (dummy) pad electrodes 110, the first feed-in pad electrode 106 and the second feed-in pad electrode
108 are used as the load point of the present embodiment antenna structure.In the present embodiment, it is magnetic to be located at first for the first feed-in pad electrode 106
The lower left corner of body layer 102, the second feed-in pad electrode 108 are located at the upper right corner of the first magnetic layer 102.Fig. 1 of the present embodiment
Be 10 the first pad electrodes 104 in Fig. 2, the shape of the first pad electrode 104 is a square.But the present invention is not limited to
This, the number and shape of the first pad electrode 104 can change according to the demand of processing procedure and the specification of product.Therefore, the first weld pad electricity
The quantity of pole 104 can be more than 10 or less than 10.First magnetic layer 102 can be the magnetic material of such as Ferrite Material
Composition, alternatively, the first magnetic layer 102 or low-temperature co-burning ceramic material, form above-mentioned first using screen painting
Pad electrode 104, subsequent progress low-temperature co-sintered ceramics processing procedure are formed.In the present embodiment, the antenna structure 100 of communication module
It can more be combined with an IC chip, to form a communication device, and above-mentioned first pad electrode 104 is used to and integrated circuit
Chip contact, and in one embodiment, the first pad electrode 104 and the joint sheet of integrated circuit are electrically connected using scolding tin.
Therefore, the first pad electrode 104 is preferably formed in the nickel layer on silver layer including a silver layer and one, by preferably connecing between nickel and tin
Characteristic is closed, the engaging force between the first pad electrode 104 and the joint sheet of integrated circuit is increased.
In order to enable the first pad electrode 104 on the lower surface of the first magnetic layer 102 can be electrical with structure thereon
It connects, further includes multiple first through hole conductors 112 in the first magnetic layer 102, run through the upper surface of the first magnetic layer 102
And lower surface.
One first intermediate magnetic body layer 151 is located in the first magnetic layer 102, wherein in the first intermediate magnetic body layer 151
It is formed with multiple first intermediate throughholes conductors 153.One second magnetic layer 114 is located on the first intermediate magnetic body layer 151.Second
An illusory conducting wire 116 is formed on the lower surface of magnetic layer 114, via the first intermediate throughholes conductor 151 and first through hole
Conductor 112 is electrically connected above-mentioned illusory pad electrode 110.In more detail, illusory conducting wire 116 is a U-shaped conducting wire.It is illusory to lead
Line 116 is not electrically connected with external circuit, and use is that illusory pad electrode 110 is cascaded, so that in illusory weldering
When padding electroless nickel layer on electrode 110, increase the area of the cathode of electroplating process, so that the nickel formed in illusory pad electrode 110
Layer more evenly attached to it, and increase the upper tin rate that plating forms illusory pad electrode 110.First feed-in pad electrode
106 and second feed-in pad electrode 108 then not with illusory conducting wire 116 be electrically connected, reason is the first feed-in pad electrode 106
Have with the second feed-in pad electrode 108 and be electrically connected with the linear conductor and via conductors of magnetic layer thereon, therefore, in electricity
With sufficiently large electrode area when plating, increase its electrode area without reconnecting illusory conducting wire.
It further include two the second via conductors 118 other than illusory conducting wire 116, in the second magnetic layer, through the
The upper and lower surfaces of two magnetic layers 114, and the first feedback being electrically connected on 102 lower surface of the first magnetic layer
Enter pad electrode 106 and the second feed-in pad electrode 108, so that the first feed-in pad electrode 106 and the second feed-in pad electrode
108 can be electrically connected and (will be discussed in greater detail below) with the coiled type conductive pattern of core structure thereon.In the present embodiment, such as
Shown in Figure 1A and Figure 1B, the second via conductors 118 are located at the upper left corner and the lower right corner of the second magnetic layer 114, to be electrically connected
The upper left corner of first magnetic layer 102 and the first feed-in pad electrode 106 in the lower right corner and the second feed-in pad electrode 108.It is empty
If conducting wire 116 and the second via conductors 118 can be silver composition.
One third magnetic layer 130 is located in the second magnetic layer 114, and the third magnetic layer 130 of the present embodiment
Lower surface can directly be contacted with the upper surface of the second magnetic layer 114.It is linear that multiple first are formed in third magnetic layer 130
Conductor 132, the present invention do not limit 132 shape of First Line shape conductor, and row sets mode and is also not limited to shown in Figure 1A and Figure 1B.?
In the present embodiment, the first linear conductor 132 is silver composition.
One the 4th magnetic layer 150 is located in third magnetic layer 130, and the 4th magnetic layer 150 of the present embodiment
Lower surface can directly be contacted with the upper surface of third magnetic layer 130.Multiple third through-holes are formed in 4th magnetic layer 150
Conductor 179, run through the 4th magnetic layer 150 upper and lower surfaces, and be electrically connected it is right in third magnetic layer 130
The first linear conductor 132 answered.In the present embodiment, third through-hole conductor 179 is silver composition.
One the 5th magnetic layer 152 is located in the 4th magnetic layer 150, and the 5th magnetic layer 152 of the present embodiment
Lower surface can directly be contacted with the upper surface of the 4th magnetic layer 150.It is formed on 5th magnetic layer, 152 upper surface multiple flat
Second linear conductor 154 of row arrangement.In the present embodiment, each second linear conductor 154 include a main body, one first flange and
One second flange, wherein one end of the first flange connection main body, the second flange connect the other end of main body.But the present invention is not limited to
This, the second linear conductor 154 can be the structure of other shapes, and row sets mode and is also not limited to shown in Figure 1A and Figure 1B.?
In the present embodiment, the second linear conductor 154 is silver composition.Whereby, above-mentioned second linear conductor 154 can be via third through-hole conductor
179 are electrically connected corresponding second linear conductor 132, to be surrounded by coiled type conductive pattern, constitute a core structure.Whereby,
One end of coiled type conductive pattern is electrically connected the first feed-in pad electrode 106, and the other end of coiled type conductive pattern is electrical
Connect the second feed-in pad electrode 108.It is understood that other can also be used the present invention is not limited to above-mentioned connection type
Mode surrounds and forms core structure.
One the 6th magnetic layer 162 is located in the 5th magnetic layer 152, and the 6th magnetic layer 162 of the present embodiment
Lower surface can directly be contacted with the upper surface of the 5th magnetic layer 152.In the present embodiment, it is formed in the 6th magnetic layer 162
There is the illusory conducting wire 159 in a top, the illusory conducting wire 159 in middle and upper part can be a U-shaped.One second 155, intermediate magnetic body layer
In in the 6th magnetic layer 162, wherein multiple second intermediate throughholes conductors 157 are formed in the second intermediate magnetic body layer 155, and
Second intermediate throughholes conductor 157 runs through the upper and lower surfaces of the second intermediate magnetic body layer 155.
One the 7th 166 layers of magnetic substance be located on the second intermediate throughholes conductor 157, and the 7th magnetic layer of the present embodiment
166 lower surface can directly be contacted with the upper surface of the second intermediate throughholes conductor 157.The upper surface shape of 7th magnetic layer 166
At multiple second pad electrodes 168, and multiple fifth hole conductors 164 are formed in the 7th magnetic layer 166, connection corresponds to
The second pad electrode 168.Also, in one embodiment, the second pad electrode 168 is electrically insulated with core structure.In this reality
It applies in example, above-mentioned second pad electrode 168 and fifth hole conductor 164 are all silver-colored composition.
It in an embodiment of the present invention, can be in the second intermediate magnetic body layer 155, the 6th magnetic layer 162 and/or the 7th magnetic
Property body layer 166 forming process in add sintering aid or bending inhibitor, to improve product curvature, and it is reliable to increase product
Degree.
In addition, in one embodiment, third magnetic layer 130, the 4th magnetic layer 150 and the 5th magnetic layer 152 are each
With one first magnetic permeability, the first magnetic layer 102, the second magnetic layer 114, the 6th magnetic layer 162 and the 7th magnetic substance
Layer 166 respectively has one second magnetic permeability, and the first magnetic permeability is greater than or equal to second magnetic permeability.Due to the main line layer of antenna
It is formed in third magnetic layer 130, the 4th magnetic layer 150 and the 5th magnetic layer 152, the setting of above-mentioned magnetic layer can
Increase the inductance value (inductance value) of antenna.For example, third magnetic layer 130,150 and of the 4th magnetic layer
5th magnetic layer 152 is one first Ferrite Material composition, the first magnetic layer 102, the second magnetic layer 114, the 6th magnetic
Property body layer 162 and the 7th magnetic layer 166 be one second Ferrite Material, the magnetic permeability of the first Ferrite Material is greater than or equal to
The magnetic permeability of second Ferrite Material.
Embodiment two
Fig. 2A is stereogram exploded view of the present embodiment for the antenna structure of communication module, and Fig. 2 B is the present embodiment for leading to
Believe the stereogram exploded view at another visual angle of antenna structure of module.The present embodiment provides a kind of antenna structure for communication module,
It includes the first magnetic layer 102, first the 151, second magnetism of intermediate magnetic body layer that it is same as the antenna structure of first embodiment
Body layer 114, third magnetic layer 130, the 4th magnetic layer 150, the 5th magnetic layer 152, the 6th magnetic layer 162, second
Intermediate magnetic body layer 155 and the 7th magnetic layer 166, and wherein corresponding via conductors and linear conductor are implemented with first
The difference of example is that the 6th magnetic layer 162 of the present embodiment and the second intermediate magnetic body layer 155 do not form any conductive structure,
In other words, the 6th magnetic layer 162 and the second intermediate magnetic body layer 155 are simple magnetic body structure layer.Rest part and
First embodiment is similar or identical, not repeated description herein.
Since the second pad electrode 168 in the 7th magnetic layer 166 of the present embodiment is not provided with any function,
Design can be carried out, provides better visual effect, such as shown in Fig. 3 A, second pad electrode 168 of the present embodiment can
Pattern including rectangle and hollow.In another embodiment, as shown in Figure 3B, second pad electrode 168 of the present embodiment can
Including rectangle, hollow and I-shaped pattern.In another embodiment, as shown in Figure 3 C, the second weld pad electricity of the present embodiment
Pole 168 may include the pattern of rectangle, hollow and English font.In another embodiment, as shown in Figure 3D, the of the present embodiment
Two pad electrodes 168 may include the pattern of rectangle, hollow and other English fonts.
Embodiment three
Fig. 4 A is stereogram exploded view of the present embodiment for the antenna structure of communication module, and Fig. 4 B is the present embodiment for leading to
Believe the stereogram exploded view at another visual angle of antenna structure of module.The present embodiment provides a kind of antenna structure for communication module,
It includes the first magnetic layer 102, first the 151, second magnetism of intermediate magnetic body layer that it is same as the antenna structure of first embodiment
Body layer 114, third magnetic layer 130, the 4th magnetic layer 150 and the 5th magnetic layer 152 and wherein corresponding via conductors
And linear conductor, different from the first embodiment are that the antenna structure of the present embodiment does not include the 6th magnetic layer, second
Intermediate magnetic body layer and the 7th magnetic layer.
Fig. 5 is flow chart of the present embodiment for the forming method of the antenna structure of communication module.Cooperate Figure 1A, figure below
1B and Fig. 5 describes production method of the present embodiment for the antenna structure of communication module.Firstly, step 302 is carried out, with lamination type
Printing process forms one first magnetic layer 102, wherein including multiple first pad electrode, 104 Hes in the first magnetic layer 102
Multiple first through hole conductors 112.In the present embodiment, the lamination type printing process of this step is to be formed with a screen painting processing procedure
First pad electrode 104 and first through hole conductor 112, and it is subsequent to including the first pad electrode 104 and first through hole conductor 112
The first magnetic layer 102 carry out baking processing procedure.Subsequent progress step 304 is formed among one first with lamination type printing process
Magnetic layer 151 is in the first magnetic layer 102, wherein including multiple first intermediate throughholes in the first intermediate magnetic body layer 151
Conductor 153.Subsequent progress step 306 forms one second magnetic layer 114 in the first intermediate magnetic body with lamination type printing process
Layer 151 on, wherein in the second magnetic layer 114 include an illusory conducting wire 116 and multiple second via conductors 118, this step
Lamination type printing process is to form illusory conducting wire 116 and the second via conductors 118 with a screen painting processing procedure, and subsequent to including
Second magnetic layer 114 of illusory conducting wire 116 and the second via conductors 118 carries out baking processing procedure.
Step 308 is carried out, a third magnetic layer 130 is formed in the second magnetic layer 114 with lamination type printing process,
It wherein include multiple first linear conductors 132 arranged in parallel, the lamination type printing process of this step in third magnetic layer 130
To form the first linear conductor 132 with a screen painting processing procedure, and it is subsequent to the third magnetic substance including the first linear conductor 132
Layer 130 carries out baking processing procedure.
Step 310 is carried out, one the 4th magnetic layer 150 is formed in third magnetic layer 130 with lamination type printing process,
It wherein include multiple third through-hole conductors 134 in the 4th magnetic layer 150, the lamination type printing process of this step is with a halftone
Printing process forms third through-hole conductor 179, and subsequent the 4th magnetic layer 150 progress to including third through-hole conductor 179
Toast processing procedure.
Step 312 is carried out, one the 5th magnetic layer 152 is formed in the 4th magnetic layer 150 with lamination type printing process,
It wherein include multiple second linear conductors 154 arranged in parallel, the lamination type printing process of this step in the 5th magnetic layer 152
To form the second linear conductor 154 with a screen painting processing procedure, and it is subsequent to the 5th magnetic substance including the second linear conductor 154
152 layers carry out baking processing procedure.Above-mentioned first linear conductor 132, third through-hole conductor 179 and the second linear conductor 154 are electric each other
Property connection, and coiled type conductive pattern is surrounded by, to constitute a core structure.
Step 314 is carried out, one the 6th magnetic layer 162 is formed in the 5th magnetic layer 152 with lamination type printing process.
Step 316 is carried out, one second intermediate magnetic body layer 155 is formed in the 6th magnetic layer 162 with lamination type printing process.It carries out
Step 318, one the 7th magnetic layer 166 is formed on the second intermediate magnetic body layer 155, wherein the 7th with lamination type printing process
It include multiple second pad electrodes 168 and multiple fifth hole conductors 164 in magnetic layer 166.In the present embodiment, this step
Lamination type printing process be that the second pad electrode 168 and fifth hole conductor 164 are formed with a screen painting processing procedure, and it is subsequent
Low-temperature co-sintered ceramics processing procedure is carried out to the antenna structure 100 of this communication module.
According to above-described embodiment, the present invention is had following technical effect that
1, the embodiment of the present invention using lamination type printing process formed be used for communication module antenna structure, processing procedure compared with
Simply and cost is relatively low, and the present invention is especially in third magnetic layer, the 4th magnetic layer and the 5th magnetic including core structure
Property body layer use the material with higher magnetic conductivity, therefore the inductance value of small sized antenna can be promoted.Therefore, the present invention realizes small
The antenna structure of sized communication module can provide enough inductance value, and it engaged with the chip of small size, can produce small
The communication module of size.
2, the embodiment of the present invention forms illusory conducting wire in the second magnetic material layer, and make that it is electrically connected part the
One welds electric electrode, increases by first of above-mentioned part in the electroplating process upper tin rate for welding electric electrode whereby.
3, the present invention is in the forming process of the second intermediate magnetic body layer, the 6th magnetic layer and/or the 7th magnetic layer
Sintering aid or bending inhibitor are added, improves product flatness, and increase the reliability of product.
The foregoing is merely preferable possible embodiments of the invention, non-therefore limitation protection scope of the present invention, therefore such as
The equivalence techniques variation done with description of the invention and accompanying drawing content, is both contained in protection scope of the present invention.
Claims (10)
1. a kind of antenna structure for communication module characterized by comprising
One first magnetic layer；
One second magnetic layer is located in first magnetic layer；
One third magnetic layer is located in second magnetic layer；
One the 4th magnetic layer is located in the third magnetic layer；
One the 5th magnetic layer is located in the 4th magnetic layer；
One the 6th magnetic layer is located in the 5th magnetic layer；And
One the 7th magnetic layer is located in the 6th magnetic layer；
Wherein, coiled type conductive pattern is set in the magnetic layer of the third, the 4th and the 5th, to constitute a core structure,
Multiple first pad electrodes are set in first magnetic layer, multiple second pad electrodes are set in the 7th magnetic layer, it should
Multiple first pad electrodes include one first feed-in pad electrode, one second feed-in pad electrode and multiple illusory pad electrodes,
One end of the coiled type conductive pattern is electrically connected the first feed-in pad electrode, and the other end electricity of the coiled type conductive pattern
Property connects the second feed-in pad electrode；
Wherein, the magnetic layer of the third, the 4th and the 5th respectively has one first magnetic permeability, first magnetic layer, this
Two magnetic layers, the 6th magnetic layer and the 7th magnetic layer respectively have one second magnetic permeability, which is higher than
Or it is equal to second magnetic permeability, and an illusory conducting wire is provided in second magnetic layer, it is more which is electrically connected this
A illusory pad electrode, wherein first, second magnetic layer can be considered upper layer magnetic layer, the third, the 4th, this
Five magnetic layers can be considered that middle layer magnetic layer, the six, the 7th magnetic layers can be considered lower layer's magnetic layer.
2. being used for the antenna structure of communication module as described in claim 1, which is characterized in that being somebody's turn to do in the 7th magnetic layer
Multiple second pad electrodes are electrically insulated with the core structure.
3. being used for the antenna structure of communication module as described in claim 1 characterized by comprising
One first intermediate magnetic body layer, between first magnetic layer and second magnetic layer；And
One second intermediate magnetic body layer, between the 6th magnetic layer and the 7th magnetic layer, the wherein second intermediate magnetic
Property body layer, the 6th magnetic layer and the 7th magnetic layer in add sintering aid or bending inhibitor.
4. being used for the antenna structure of communication module as described in claim 1, which is characterized in that first magnetic layer, this
Two magnetic layers, the third magnetic layer, the 4th magnetic layer, the 5th magnetic layer, the 6th magnetic layer and this
Seven magnetic layers are ferritic material composition.
5. being used for the antenna structure of communication module as described in claim 1, which is characterized in that first magnetic layer, this
Two magnetic layers, the third magnetic layer, the 4th magnetic layer, the 5th magnetic layer, the 6th magnetic layer and this
Seven magnetic layers are low-temperature co-burning ceramic material.
6. a kind of production method of the antenna structure for communication module characterized by comprising
One first magnetic layer is formed with lamination type printing process, wherein includes multiple first weld pad electricity in first magnetic layer
Pole；
One second magnetic layer is formed in first magnetic layer, wherein in second magnetic layer with lamination type printing process
Including an illusory conducting wire, which is electrically connected multiple first pad electrode of part；
A third magnetic layer is formed in second magnetic layer, wherein in the third magnetic layer with lamination type printing process
Including multiple first linear conductors arranged in parallel；
One the 4th magnetic layer is formed in the third magnetic layer, wherein in the 4th magnetic layer with lamination type printing process
Including multiple via conductors；
One the 5th magnetic layer is formed in the 4th magnetic layer, wherein in the 5th magnetic layer with lamination type printing process
Including multiple second linear conductors arranged in parallel, multiple first linear conductor, multiple via conductors and multiple second
Linear conductor is electrically connected to each other, and is surrounded by coiled type conductive pattern, to constitute a core structure；
One the 6th magnetic layer is formed in the 5th magnetic layer with lamination type printing process；And
One the 7th magnetic layer is formed in the 6th magnetic layer, wherein in the 7th magnetic layer with lamination type printing process
Including multiple second pad electrodes.
7. the production method for the antenna structure of communication module as claimed in claim 6, which is characterized in that the third is magnetic
Body layer, the 4th magnetic layer and the 5th magnetic layer respectively have one first magnetic permeability, first magnetic layer, second magnetic
Property body layer, the 6th magnetic layer and the 7th magnetic layer respectively have one second magnetic permeability, which is higher than or waits
In second magnetic permeability.
8. the production method for the antenna structure of communication module as claimed in claim 7, which is characterized in that lamination type print
Brush processing procedure includes screen painting and subsequent low-temperature co-sintered ceramics processing procedure.
9. the production method for the antenna structure of communication module as claimed in claim 8 characterized by comprising
One first intermediate magnetic body layer is formed between first magnetic layer and second magnetic layer；And
One second intermediate magnetic body layer is formed between the 6th magnetic layer and the 7th magnetic layer, wherein in this among second
Sintering aid or bending inhibitor are added in the forming process of magnetic layer, the 6th magnetic layer and the 7th magnetic layer.
10. a kind of antenna structure for communication module characterized by comprising
One first magnetic layer；
One second magnetic layer is located in first magnetic layer；
One third magnetic layer is located in second magnetic layer；
One the 4th magnetic layer is located in the third magnetic layer；And
One the 5th magnetic layer is located in the 4th magnetic layer；
Wherein, coiled type conductive pattern is set in the magnetic layer of the third, the 4th and the 5th, to constitute a core structure,
Multiple first pad electrodes are set in first magnetic layer, and multiple first pad electrode includes one first feed-in weld pad electricity
Pole, one second feed-in pad electrode and multiple illusory pad electrodes, one end of the coiled type conductive pattern be electrically connected this first
Feed-in pad electrode, and the other end of the coiled type conductive pattern is electrically connected the second feed-in pad electrode；
Wherein, it is provided with an illusory conducting wire in second magnetic layer, which is electrically connected multiple illusory weld pad electricity
Pole.
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| CN201510249454.7A CN106299633B (en) | 2015-05-15 | 2015-05-15 | Antenna structure and preparation method thereof for communication module |
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| JP4821965B2 (en) * | 2005-07-07 | 2011-11-24 | 戸田工業株式会社 | Magnetic antenna |
| JP5700233B2 (en) * | 2012-05-09 | 2015-04-15 | 株式会社村田製作所 | Coil antenna element and antenna module |
| JP5585740B1 (en) * | 2013-03-18 | 2014-09-10 | 株式会社村田製作所 | Multilayer inductor element and communication device |
| WO2015002116A1 (en) * | 2013-07-01 | 2015-01-08 | 株式会社 村田製作所 | Manufacturing method for stacked inductor element |
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