CN205992455U

CN205992455U - A kind of coil and inductance device and circuit

Info

Publication number: CN205992455U
Application number: CN201620271273.4U
Authority: CN
Inventors: 拉斐尔·瓦伦丁
Original assignee: Zhenxun Electronic Technology (shanghai) Co Ltd
Current assignee: Lingjia Semiconductor (Suzhou) Co., Ltd.
Priority date: 2016-04-01
Filing date: 2016-04-01
Publication date: 2017-03-01
Anticipated expiration: 2026-04-01

Abstract

This utility model provides a kind of coil and inductance device and circuit.Described coil includes：Plurality of conductive layers, wherein each conductive layer at least include conductive traces, and described conductive traces can be the conductive helical of a circle or the conductive helical of two circles or ring segment conductive helical, and wherein at least one conductive traces are the conductive helical of two circles；Other one layer of conductive layer, described other one layer of conductive layer includes conductive traces, and described conductive traces can be conducting bridge, and described conducting bridge is used for electrically connecting the second termination electrode of coil with one of plurality of conductive layers conductive traces；First termination electrode of coil is electrically connected with the another one conductive traces in plurality of conductive layers；All conductive traces of coil are all mutually isolated by insulant, and all conductive traces are all electrically connected formation coil.Described coil can be used for preparing the inductance device of high inductance value, can be widely used in circuit.Each layer conductive layer of described coil can be by adopting semiconductor technology, integrated passive devices (IPD) technique or PCB technology preparation.This coil has high inductance value and high quality factor Q-value, can also effectively reduce parasitic coupling capacitance and resistance.

Description

A kind of coil and inductance device and circuit

Technical field

This utility model is related to technical field of electronic devices, more particularly to a kind of coil and inductance device and circuit.

Background technology

Inductance is that one of electronic circuit commonly uses components and parts, for the inductance dress in integrated circuit or printed circuit board (PCB) Put and must have at least one conductive traces.With the development of integrated circuit technique, generally adopt single conductive layer or multilayer conductive Layer is preparing these components and parts.If but adopting single layer structure, usual coil needs to take larger area larger to obtain Inductance, therefore inductance device is designed using the coil of multilayer conductive Rotating fields.But the line based on multilayer conductive Rotating fields The inductance device of circle has some crucial defects, such as defect of self-resonant frequency and Q-value aspect etc..

Patent No.：7,489,220,8,941,212,8,754,736,8,279,036,8,441,333,6,417,755, 7,370,403,6,534,406,7,782,166,5,656,849 United States Patent (USP) and Publication No.：20070/001796, Divide in many american documentation literatures of 2011/0133877,20050/104158,2012/0249276,2013/0,106,554A1 Do not disclose the Stacked coil of various different structures.But as a rule, have in the inductance coil of plurality of conductive layers, such as scheme Shown in 7.Upper conductive layer and underlying conductive layer are aligned with each other, and the conductive helical ring of the proper alignment on each conductive layer leads to Cross metallic conduction hole to be electrically connected, two termination electrodes are located at the external conductive spiral shell of Upper conductive layer and underlying conductive layer respectively On rotation ring.So can be very big to the performance impact of inductance device, for example can reduce the self-resonant frequency of inductance device and quality because Number Q.The appearance of the therefore inductance device of exigence high q-factor and high self resonant frequency.

Utility model content

The shortcoming of prior art in view of the above, the purpose of this utility model is to provide one kind to be used for preparing inductance dress The coil put, inductance device and the method preparing the coil for inductance device.Described coil is characterised by：There is high inductance Value, high self resonant frequency and high quality factor Q.

To achieve these goals and other related purposes, this utility model provides a kind of coil, and it at least includes：

Plurality of conductive layers, wherein each conductive layer at least include conductive traces, and described conductive traces can be a circle Conductive helical or two circle conductive helical or ring segment conductive helical, wherein at least one conductive traces are 2 circles Conductive helical；

Other one layer of conductive layer, described other one layer of conductive layer includes conductive traces, and described conductive traces can be Conducting bridge, described conducting bridge is used for electrically connecting the second termination electrode of coil with one of plurality of conductive layers conductive traces；

First termination electrode of coil is electrically connected with the another one conductive traces in plurality of conductive layers；

All conductive traces of coil are all mutually isolated by insulant, and all conductive traces are all electrically connected formation Coil.

Preferably, described other one layer of conductive layer can be replaced by other plurality of conductive layers, wherein other plurality of conductive layers In each conductive layer include section conductive traces, all sections of conductive traces are placed in parallel, mutual by insulant Isolation, and the first end of each section of conductive traces and/or second end pass through a pair of metallic conduction hole and other section of conductor rail Mark is electrically connected to form a conducting bridge.

Preferably, the first end of each independent conductive traces in plurality of conductive layers and/or second end pass through one The conductive traces of other conductive layers in metallic conduction hole and plurality of conductive layers are electrically connected to form coil.

Preferably, the conductive traces electrically connecting with conducting bridge are the inner conductive tracks of coil, and are the conductive spiral shells of a circle Rotation or ring segment conductive helical.

Preferably, the conductive traces electrically connecting with the first termination electrode are the external conductive tracks of coil, and are leading of a circle Electric spiral or ring segment conductive helical.

Preferably, electric current is from an external conductive track of described first termination electrode inflow line circle, from external conductive track Flow into the conductive traces of its adjacent conductive layer, flow into the adjacent layer of its adjacent layer conductive layer from the conductive traces of its adjacent conductive layer The conductive traces of conductive layer, finally flow into, with so alternate path, the inner conductive track electrically connecting with conducting bridge, stream Cross described conducting bridge, thus flowing out described second termination electrode.

Preferably, the conductive helical ring of each conductive layer in plurality of conductive layers is adjacent the conductive helical ring of conductive layer Placed face-to-face one by one, and the conductive helical ring of the geometric center of conductive helical ring of each layer of conductive layer and other conductive layers Geometric center be spatially aligned with each other.

Preferably, the shape of described conductive helical ring can be square, class square, oval, hexagon, octagon, Circle, one of closed curve.

Preferably, each layer conductive layer of described coil can be by adopting semiconductor technology, integrated passive devices (IPD) work Skill or PCB technology preparation.

This utility model also provides a kind of inductance device, and it includes the coil described in multiple this utility model, wherein often Individual coil is all electrically connected in series to form inductance device.

This utility model also provides a kind of circuit, and it includes inductance device and/or this practicality described in this utility model Coil described in new.

As described above, coil of the present utility model has the advantages that：High impedance value, interlayer sneak coupled capacitor Little, high from corresponding frequencies with high q-factor.

Brief description

Fig. 1 is shown as this utility model for making the preferred schematic diagram of the coil with 9 circles of inductance device.

Fig. 2 (a) is shown as the preferred schematic diagram of the Upper conductive layer distribution of the coil in Fig. 1, and Fig. 2 (b) is shown as in Fig. 1 The distribution of conductive layer at the middle and upper levels of coil preferred schematic diagram, Fig. 2 (c) be shown as the middle underlying conductive layer of the coil in Fig. 1/under The preferred schematic diagram of layer conductive layer distribution.

Fig. 3 (a) is shown as this utility model for making the Upper conductive layer distribution of the coil with 6 circles of inductance device Preferred schematic diagram, it is conductive for the middle level that makes the coil with 6 circles of inductance device that Fig. 3 (b) is shown as this utility model The preferred schematic diagram of layer/underlying conductive layer distribution.

Fig. 4 (a) is shown as this utility model for making the Upper conductive layer distribution of the coil with 6 circles of inductance device Preferred schematic diagram, Fig. 4 (b) is shown as this utility model for making the leading at the middle and upper levels of the coil with 6 circles of inductance device The preferred schematic diagram of electric layer distribution, Fig. 4 (c) is shown as this utility model for making the coil with 6 circles of inductance device The preferred schematic diagram of middle underlying conductive layer/underlying conductive layer distribution.

Fig. 5 (a) is shown as this utility model for making the Upper conductive layer distribution of the coil with 8 circles of inductance device Preferred schematic diagram, it is conductive for the middle level that makes the coil with 8 circles of inductance device that Fig. 5 (b) is shown as this utility model The preferred schematic diagram of layer/underlying conductive layer distribution.

Fig. 6 (a) is shown as this utility model for making the Upper conductive layer distribution of the coil with 4 circles of inductance device Preferred schematic diagram, it is conductive for the middle level that makes the coil with 4 circles of inductance device that Fig. 6 (b) is shown as this utility model The preferred schematic diagram of layer/underlying conductive layer distribution.

Fig. 7 (a) is shown as being used in background technology making the Upper conductive layer distribution of the coil with 4 circles of inductance device Preferred schematic diagram, Fig. 7 (b) be shown as in background technology be used for make inductance device the coil with 4 circles underlying conductive The preferred schematic diagram of layer distribution.

Fig. 8 (a) is shown as this utility model for making the Upper conductive layer distribution of the coil with 6 circles of inductance device Preferred schematic diagram, it is conductive for the middle level that makes the coil with 6 circles of inductance device that Fig. 8 (b) is shown as this utility model The preferred schematic diagram of layer/underlying conductive layer distribution.

Fig. 9 (a) and Fig. 9 (b) is shown as the coil shown in 2 Fig. 4 and is distributed for the Upper conductive layer making inductance device Preferred schematic diagram, Fig. 9 (c) and Fig. 9 (d) are shown as the coil shown in 2 Fig. 4 for making the conductive at the middle and upper levels of inductance device The preferred schematic diagram of layer distribution, Fig. 9 (e) and Fig. 9 (f) is shown as the coil shown in Fig. 4 for making the middle lower floor of inductance device The preferred schematic diagram of conductive layer/underlying conductive layer distribution.

Figure 10 (a) and Figure 10 (b) is shown as the coil shown in 2 Fig. 8 and divides for the Upper conductive layer making inductance device The preferred schematic diagram of cloth, Figure 10 (c) and Figure 10 (d) are shown as the coil shown in Fig. 8 for making the middle level conduction of inductance device The preferred schematic diagram of layer/underlying conductive layer distribution.

Figure 11 illustrates the conceptual scheme of the electricity storage of two adjacent lines of series connection.

Figure 12 (a) is shown as the schematic diagram of the distribution path of Upper conductive layer of the coil with 4 circles as shown in Figure 6, Figure 12 (b) is shown as the schematic diagram of the distribution path of middle level conductive layer of the coil with 4 circles as shown in Figure 6.This schematic diagram Illustrate the voltage's distribiuting along path.

Figure 13 (a) is shown as the principle as shown in Figure 7 with the distribution path of Upper conductive layer of the coil of 4 circles Figure, Figure 13 (b) is shown as the schematic diagram as shown in Figure 7 with the distribution path of the underlying conductive layer of the coil of 4 circles.This is former Reason figure illustrates the voltage's distribiuting when the bias voltage of coil is 1V along distribution path.

Component label instructions

101,104,107,110,113,116,119 conductive traces

100,123 termination electrodes

102,103,105,106,108,109,111,112,114,115,117,118,120,121 metallic conduction holes

122 conducting bridges

Specific embodiment

Hereinafter embodiment of the present utility model is illustrated by particular specific embodiment, the understanding being familiar with this technology can be by this Content disclosed by utility model book understands other advantages of the present utility model and effect easily.

Refer to Fig. 1-13.It should be clear that structure depicted in this specification institute accompanying drawings, ratio, size etc., all only in order to join Close the content disclosed in description, so that those skilled in the art understands and reads, being not limited to this utility model can With the qualificationss implemented, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size Adjustment, under not affecting this utility model effect that can be generated by and the purpose that can reach, all should fall within this practicality new In the range of technology contents disclosed in type can be covered.Meanwhile, in this specification cited 1 as " on ", D score, " left ", " right ", " in " and " one ", " outside ", " internal ", " on ", " under ", " at home and abroad ", " in interior " etc. term, be merely convenient to Narration understands, and is not used to limit the enforceable scope of this utility model, being altered or modified of its relativeness, becomes in no essence Under more technology contents, when being also considered as the enforceable category of this utility model.

The coil that this utility model provides includes：Plurality of conductive layers, wherein each conductive layer at least include a conductor rail Mark, described conductive traces can be the conductive helical of a circle or the conductive helical of two circles or ring segment conductive helical, its In at least one conductive traces be two circles conductive helical；Other one layer of conductive layer, described other one layer of conductive layer includes one Individual conductive traces, described conductive traces can be conducting bridge, and described conducting bridge is used for leading the second termination electrode of coil with multilamellar One of electric layer conductive traces electrically connect；First termination electrode of coil is electric with the another one conductive traces in plurality of conductive layers Connect；All conductive traces of coil are all mutually isolated by insulant, and all conductive traces are all electrically connected formation line Circle.Each layer conductive layer of described coil can be by adopting semiconductor technology, integrated passive devices (IPD) technique or PCB work Prepared by skill.

Compared with prior art, coil of the present utility model has the advantages that：High impedance value, interlayer sneak coupling Electric capacity little, high from corresponding frequencies with high q-factor.

Embodiment 1

Specific embodiment will be aided with explanation by with this utility model accompanying drawing.Fig. 1 is shown as this utility model and is used for making The preferred schematic diagram of the coil with 9 circles of inductance device.Fig. 2 is shown as the excellent of four layers of conductive layer distribution of the coil in Fig. 1 Select schematic diagram.This coil comprises 4 layers of conductive layer, and leftmost in Fig. 2 is Upper conductive layer, and middle is conductive layer at the middle and upper levels, Rightmost be middle underlying conductive layer and underlying conductive layer floor map.The conductive traces of each layer of conductive layer pass through a pair The conductive traces of the conductive layer that metallic conduction hole is adjacent are connected.

This coil includes 4 layers of conductive layer, and wherein three layers conductive layer are Upper conductive layer respectively, conductive layer at the middle and upper levels, middle level Conductive layer, in addition one layer of conductive layer is underlying conductive layer.Upper conductive layer includes 2 conductive traces 101,113, and wherein outside is led Electric track 101 is made up of 1 conductive helical ring 1011, and that is, external conductive track 101 is the conductive helical of 1 circle；Inside is led Electric track 113 is that is, inner conductive track 113 is the conductive helical of 2 circles by 2 conductive helical rings 1131,1132 composition.In Upper conductive layer includes 3 conductive traces 104, and 110,116, its external conductive track 104 is by 1041 groups of 1 conductive helical ring Become, that is, external conductive track 104 is the conductive helical of 1 circle；Middle part conductive traces 110 are by 1101 groups of 1 conductive helical ring Become, that is, middle part conductive traces 110 are the conductive helical of 1 circle；Inner conductive track 116 is by 1161 groups of 1 conductive helical ring Become, that is, inner conductive track 116 is the conductive helical of 1 circle；Middle underlying conductive layer includes 2 conductive traces 107,119, wherein External conductive track 107 is that is, external conductive track 107 is the conduction of 2 circles by 2 conductive helical rings 1071,1072 composition Spiral；Inner conductive track 119 is made up of 1 conductive helical ring 1191, and that is, inner conductive track 119 is the conduction of 1 circle Spiral.Other one layer of conductive layer is underlying conductive layer, and underlying conductive layer includes conductive traces, and this conductive traces is one leads Electric bridge, conducting bridge can be a simple curve.This coil is by 9 spiral conducting rings, a conducting bridge composition, therefore this line Circle is the coil of 9 circles, and all conductive helical rings and conducting bridge are all metallic traces, and are mutually isolated by insulant.Described Each conductive traces of coil are mutually isolated by insulant with other conductive traces, and all conductive traces are all electric Connect and form coil.

Further, 3 conductive helical rings 1011,1131,1132 of Upper conductive layer have same or like shape Shape, but it is of different sizes, and the geometric center of each conductive helical ring of Upper conductive layer overlaps, and is arranged in the way of neat Row；3 conductive helical rings 1041,1101,1161 of conductive layer have same or like shape at the middle and upper levels, but have not Same size, the geometric center coincidence of each conductive helical ring of conductive layer, is arranged in the way of neat at the middle and upper levels；Middle lower floor leads 3 conductive helical rings 1071,1172,1191 of electric layer have same or like shape, but are of different sizes, in The geometric center of each conductive helical ring of underlying conductive layer overlaps, and is arranged in the way of neat.In this embodiment, multilamellar is led The shape of the conductive helical ring of electric layer (Upper conductive layer, conductive layer at the middle and upper levels, middle underlying conductive layer) is all octagon, and each The spacing between adjacent conductive helical ring in conductive layer is the same.Conducting bridge can be a simple curve.

In this embodiment, in addition one layer of conductive layer (i.e. underlying conductive layer) includes conductive traces, this conductive traces It is a conducting bridge 122, conducting bridge 122 is used for inner conductive track 119 (the i.e. inner conductive helical ring of middle underlying conductive layer 1191) electrically connect with the second termination electrode 123.

In this embodiment, alternatively, in addition one layer of conductive layer can be replaced by other plurality of conductive layers, and other multilamellar Each layer of conductive layer in conductive layer includes section conductive traces, and described each section of conductive traces are placed in parallel one by one, And by 1 pair of metallic conduction hole electrical connection, thus section conductive traces can form a conducting bridge.Electrically connected by section conductive traces The conducting bridge being formed and conducting bridge in other one layer of conductive layer have identical function, for by the conduction of described coil Track is electrically connected with the termination electrode of coil.The electricity of the conducting bridge being electrically connected to form by the section conductive traces in other plurality of conductive layers Resistance is less than the resistance of the conducting bridge phase in other one layer of conductive layer.

Further, the external conductive helical ring 1011 of Upper conductive layer, the external conductive helical ring of conductive layer at the middle and upper levels 1041, the external conductive helical ring 1071 of middle underlying conductive layer, placed face-to-face one by one；Conduction spiral shell in the middle of Upper conductive layer Rotation ring 1131, the middle conductive helical ring 1101 of conductive layer at the middle and upper levels, the middle conductive helical ring 1072 of middle underlying conductive layer, quilt Place face-to-face one by one；The inner conductive helical ring 1132 of Upper conductive layer, the inner conductive helical ring of conductive layer at the middle and upper levels 1161, the inner conductive helical ring 1191 of middle underlying conductive layer, placed face-to-face one by one；So, all conductions of this coil The spatially mutual calibration of the geometric center of helical ring.External conductive helical ring 1011,1041,1071 has same or like Shape, and equivalently-sized；Middle conductive helical ring 1131,1101,1072 has same or like shape, and size phase With；Inner conductive helical ring 1132,1161,1191 has same or like shape, and equivalently-sized.

Wherein Upper conductive layer, conductive layer at the middle and upper levels, middle underlying conductive layer, each of underlying conductive layer conductive traces By 1 pair of metallic conduction hole be adjacent conductive layer conductive traces electrical connection, the first end of each conductive traces and/or Second end is adjacent the conductive traces electrical connection of conductive layer by 1 pair of metallic conduction hole.In this embodiment, this coil First termination electrode 100 is electrically connected with the first end of the external conductive track 101 of Upper conductive layer, the second termination electrode of this coil 123 are electrically connected by the conducting bridge 122 positioned at underlying conductive layer with the inner conductive track 119 of middle underlying conductive layer.

Further, the second end of the external conductive track 101 of Upper conductive layer passes through 1 pair of metallic conduction hole 102, 103 are electrically connected with the first end of the external conductive track 104 of conductive layer at the middle and upper levels, at the middle and upper levels the external conductive track of conductive layer 104 second end passes through first end in 1 pair of metallic conduction hole 105,106 and the external conductive track 107 of middle underlying conductive layer End electrical connection, the second end of the external conductive track 107 of middle underlying conductive layer pass through 1 pair of metallic conduction hole 108,109 with The first end electrical connection of the center conductor rail mark 110 of Upper conductive layer, the of the center conductor rail mark 110 of conductive layer at the middle and upper levels Two ends are electrically connected by the first end in 1 pair of metallic conduction hole 111,112 and the inner conductive track 113 of conductive layer at the middle and upper levels Connect, the second end of the inner conductive track 113 of Upper conductive layer passes through 1 pair of metallic conduction hole 114,115 and conduction at the middle and upper levels The first end electrical connection of the inner conductive track 116 of layer, the second end of the inner conductive track 116 of conductive layer is logical at the middle and upper levels Cross 1 metallic conduction hole 117,118 is electrically connected with the first end of the inner conductive track 119 of middle underlying conductive layer, middle lower floor The second end of the inner conductive track 119 of conductive layer is electrically connected with conducting bridge 122 by 1 pair of metallic conduction hole 120,121.

In this utility model, electric current respectively flows through leading of each layer of conductive layer in plurality of conductive layers in an alternating fashion Electric track, that is, electric current the conductive traces of Upper conductive layer, at the middle and upper levels the conductive traces of conductive layer, in the conductive traces of middle lower floor Pass alternately over.In this embodiment, electric current flows into from the first termination electrode 100 of coil, flows through upper strata clockwise The external conductive track 101 (i.e. conductive helical ring 1011) of conductive layer, by 1 pair of metallic conduction hole 102,103, along clockwise The external conductive track 104 (i.e. conductive helical ring 1041) of conductive layer at the middle and upper levels is flow through in direction, by 1 pair of metallic conduction hole 105, 106, the external conductive track 107 flowing through middle underlying conductive layer clockwise (respectively flows through external conductive helical ring 1071, middle conductive helical ring 1072), by 1 pair of metallic conduction hole 108,109, flow through clockwise and lead at the middle and upper levels The center conductor rail mark 110 (conductive helical ring 1101 in the middle of i.e.) of electric layer, by 1 pair of metallic conduction hole 111,112, along up time The inner conductive track 113 that conductive layer at the middle and upper levels is flow through in pin direction (respectively flows through middle conductive helical ring 1131, inner conductive Helical ring 1132), by 1 pair of metallic conduction hole 114,115, flow through the inner conductive rail of conductive layer at the middle and upper levels in a clockwise direction Mark 116 (i.e. inner conductive helical ring 1161), by 1 pair of metallic conduction hole 117,118, flows through middle lower floor in a clockwise direction The inner conductive track 119 of conductive layer, by 1 pair of metallic conduction hole 120,121, flows through the conducting bridge positioned at underlying conductive layer 122, flow out the second termination electrode 123 of this coil.The coil of this utility model is used for making inductance device and other are similar Device.Each layer conductive layer of described coil can be by adopting semiconductor technology, integrated passive devices (Integrated Passive Device, IPD) technique or PCB technology preparation.

In this preferred embodiment, the cross section in metallic conduction hole pair is less than the width of conductive traces.

Preferably, the conductive traces 101,119 of this coil can also be ring segment conductive helical, i.e. conductive traces 101,119 Can be less than the conductive helical of a circle.First termination electrode and the of coil can be met by changing the length of conductive helical The putting position of two termination electrodes is to meet some special application needs.

Embodiment 2

Below in conjunction with Fig. 3, embodiment 2 of the present utility model to be described.Fig. 3 is another preferred coil of the present utility model Upper conductive layer, middle level conductive layer, the floor map of underlying conductive layer.The left side of Fig. 3 is Upper conductive layer, during the right is Layer conductive layer and underlying conductive layer.In this floor map, this coil also includes metallic conduction hole, for by one layer of conductive layer In conductive traces be adjacent conductive layer conductive traces electrical connection.

This coil includes 3 layers of conductive layer, and wherein two layers conductive layer are Upper conductive layer respectively, middle level conductive layer, and in addition one Layer conductive layer is underlying conductive layer.Upper conductive layer includes 2 conductive traces 201,207, wherein external conductive track 201 be by 1 conductive helical ring 1011 composition, that is, external conductive track 201 is the conductive helical of 1 circle；Inner conductive track 207 is by 2 Individual conductive helical ring 2071,2072 composition, that is, inner conductive track 207 is the conductive helical of 2 circles.Middle level conductive layer includes 2 Individual conductive traces 204,210, its external conductive track 204 is to be made up of 2 conductive helical rings 2041,2042, and that is, outside is led Electric track 204 is the conductive helical of 2 circles；Inner conductive track 210 is made up of 1 conductive helical ring 2101, and that is, inside is led Electric track 210 is the conductive helical of 1 circle.By 6 spiral conducting rings, a conducting bridge composition, therefore this coil is 6 circles to this coil Coil.All conductive helical rings and conducting bridge are all metallic traces, and are mutually isolated by insulant.Other one layer of conduction Layer is underlying conductive layer, and underlying conductive layer includes conductive traces, and this conductive traces is a conducting bridge 213, described coil Each conductive traces be all metallic traces, each conductive traces is mutually separated by by insulant with other conductive traces From, and all conductive traces are all electrically connected formation coil.

Further, 3 conductive helical rings 2011,2071,2072 of Upper conductive layer have same or like shape Shape, but it is of different sizes, and the geometric center of each conductive helical ring of Upper conductive layer overlaps, and is arranged in the way of neat Row；3 conductive helical rings 2041,2042,2101 of middle level conductive layer have same or like shape, but have difference Size, the geometric center of each conductive helical ring of middle level conductive layer overlapped, arranged in the way of neat；In this embodiment In, the shape of the conductive helical ring of plurality of conductive layers (Upper conductive layer, Upper conductive layer) is all octagon, and each conductive layer In adjacent conductive helical ring between spacing be the same.Conducting bridge 213 is a curve.

In this embodiment, the conducting bridge 213 of other one layer of conductive layer (i.e. underlying conductive layer), conducting bridge 213 is used for will The inner conductive track 210 (i.e. inner conductive helical ring 2101) of middle level conductive layer is electrically connected with the second termination electrode 214.

In this embodiment, alternatively, in addition one layer of conductive layer can be replaced by other plurality of conductive layers, and other multilamellar Each layer of conductive layer in conductive layer includes section conductive traces, and described each section of conductive traces are placed in parallel one by one, And by 1 pair of metallic conduction hole electrical connection, thus section conductive traces can form a conducting bridge, by positioned at other multilayer conductive The conducting bridge that the section conductive traces of layer are electrically connected to form has identical function with the conducting bridge in other one layer of conductive layer, For the conductive traces of described coil are electrically connected with the termination electrode of coil.The conducting bridge being electrically connected to form by section conductive traces The resistance of the conducting bridge phase that resistance ratio is located in other one layer of conductive layer is little.

Further, the external conductive helical ring 2011 of Upper conductive layer, the external conductive helical ring of middle level conductive layer 2041 are placed face-to-face；The middle conductive helical ring 2071 of Upper conductive layer, the middle conductive helical ring of middle level conductive layer 2042 are placed face-to-face；The inner conductive helical ring 2072 of Upper conductive layer, the inner conductive helical ring of middle level conductive layer 2101 are placed face-to-face；So, the geometric center spatially mutual calibration of all conductive helical rings of this coil.Outside is led Electric spiral 2011,2041 has same or like shape, and equivalently-sized；Middle conductive helical ring 2071,2042 has Same or like shape, and equivalently-sized；Inner conductive helical ring 2072,2101 has same or like shape, And it is equivalently-sized.

Wherein Upper conductive layer, middle level conductive layer, each of underlying conductive layer conductive traces pass through 1 pair of metallic conduction Hole is adjacent the conductive traces electrical connection of conductive layer, and the first end of each conductive traces and/or second end are right by 1 Metallic conduction hole is adjacent the conductive traces electrical connection of conductive layer.In this embodiment, the first termination electrode 200 of this coil with The first end electrical connection of the external conductive track 201 of Upper conductive layer, the second termination electrode 214 of this coil and middle level conductive layer Inner conductive track 210 electrically connected by the conducting bridge 213 positioned at underlying conductive layer.

Further, the second end of the external conductive track 201 of Upper conductive layer passes through 1 pair of metallic conduction hole 202, 203 are electrically connected with the first end of the external conductive track 204 of middle level conductive layer, the external conductive track 204 of middle level conductive layer Second end pass through the first end electricity in the 1 pair of metallic conduction hole 205,206 and the inside portion conductive traces 207 of Upper conductive layer Connect, the second end of the inner conductive track 207 of Upper conductive layer passes through 1 pair of metallic conduction hole 208,209 and middle level conduction The first end electrical connection of the inner conductive track 210 of layer, the second end of the inner conductive track 210 of middle level conductive layer is passed through 1 pair of metallic conduction hole 211,212 is electrically connected with conducting bridge 213.

In this utility model, electric current respectively flows through leading of each layer of conductive layer in plurality of conductive layers in an alternating fashion Electric track, that is, electric current pass alternately in the conductive traces, the conductive traces of middle level conductive layer of Upper conductive layer.In this enforcement In example, electric current flows into from the first termination electrode 200 of coil, flows through the external conductive track of Upper conductive layer clockwise 201 (i.e. conductive helical rings 2011), by 1 pair of metallic conduction hole 202,203, flow through middle level conductive layer clockwise External conductive track 204 (i.e. conductive helical ring 2041), by 1 pair of metallic conduction hole 205,206, flows through clockwise The inner conductive track 207 (conductive helical ring 2071, inner conductive helical ring 2072 in the middle of i.e.) of Upper conductive layer, right by 1 Metallic conduction hole 208,209, flows through inner conductive track 210 (the i.e. inner conductive spiral shell of middle level conductive layer clockwise Rotation ring 2101), by 1 pair of metallic conduction hole 211,212, flow through the conducting bridge 213 positioned at underlying conductive layer, flow out this coil The second termination electrode 214.The coil of this utility model is used for making inductance device and other similar devices.

Preferably, the conductive traces 201,210 of this coil can also be ring segment conductive helical, i.e. conductive traces 201,210 Can be less than the conductive helical of a circle.First termination electrode and the of coil can be met by changing the length of conductive helical The putting position of two termination electrodes is to meet some special application needs.

Embodiment 3

This utility model also provides another preferred embodiment.Fig. 4 show another preferred coil Upper conductive layer, in Upper conductive layer, middle underlying conductive layer, the floor map of underlying conductive layer.All wrap in the floor map of each layer of conductive layer Include metallic conduction hole, the conductive traces for the conductive traces of each layer of conductive layer are adjacent layer electrically connect.

In this embodiment, preferred coil includes 4 layers of conductive layer, and wherein three layers conductive layer are Upper conductive layer respectively, Conductive layer at the middle and upper levels, middle underlying conductive layer, in addition one layer of conductive layer is underlying conductive layer.Upper conductive layer includes 1 conductor rail Mark 307, wherein conductive traces 307 are that is, conductive traces 307 are leading of 2 circles by 2 conductive helical rings 3071,3072 composition Electric spiral.Conductive layer includes 2 conductive traces 304,310 at the middle and upper levels, and its external conductive track 304 is by 1 conductive helical ring 3041 compositions, that is, external conductive track 304 is the conductive helical of 1 circle；Inner conductive track 310 is by 1 conductive helical ring 3101 compositions, that is, inner conductive track 310 is the conductive helical of 1 circle.Middle underlying conductive layer includes 2 conductive traces 301, 313, wherein external conductive track 301 is made up of 1 conductive helical ring 3011, and that is, external conductive track 301 is leading of 1 circle Electric spiral；Inner conductive track 313 is made up of 1 conductive helical ring 3131, and that is, inner conductive track 313 is leading of 1 circle Electric spiral.By 6 spiral conducting rings, a conducting bridge composition, therefore this coil is the coil of 6 circles to this coil, all conduction spiral shells Rotation ring and conducting bridge are all metallic traces, and are mutually isolated by insulant.Other one layer of conductive layer includes a conductor rail Mark, this conductive traces is a conducting bridge 316, and each conductive traces of described coil are all metallic traces, and each is led Electric track is mutually isolated by insulant, and all conductive traces are all electrically connected formation coil.

Further, 2 conductive helical rings 3071,3072 of Upper conductive layer have same or like shape, but It is to be of different sizes, the geometric center of each conductive helical ring of Upper conductive layer overlaps, and is arranged in the way of neat；In 2 conductive helical rings 3041,3101 of Upper conductive layer have same or like shape, but are of different sizes, The geometric center of each conductive helical ring of conductive layer overlaps at the middle and upper levels, is arranged in the way of neat；2 of middle underlying conductive layer Conductive helical ring 3011,3131 has same or like shape, but is of different sizes, middle underlying conductive layer every The geometric center of individual conductive helical ring overlaps, and is arranged in the way of neat.In this embodiment, plurality of conductive layers (Upper conductive Layer, conductive layer at the middle and upper levels, middle underlying conductive layer) the shape of conductive helical ring be all phase in octagon, and each conductive layer Spacing between adjacent conductive helical ring is the same.Conducting bridge 316 is a curve.

In this embodiment, in addition one layer of conductive layer (i.e. underlying conductive layer) includes conductive traces, this conductive traces It is a conducting bridge 316, conducting bridge 316 is used for inner conductive track 313 (the i.e. inner conductive helical ring of middle underlying conductive layer 3131) electrically connect with the second termination electrode 317.

In this embodiment, alternatively, in addition one layer of conductive layer can be replaced by other plurality of conductive layers, and other multilamellar Each layer of conductive layer in conductive layer includes section conductive traces, and described each section of conductive traces are placed in parallel one by one, And by 1 pair of metallic conduction hole electrical connection, thus section conductive traces can form a conducting bridge.Electrically connected by section conductive traces The conducting bridge being formed and conducting bridge in other one layer of conductive layer have identical function, for by the conduction of described coil Track is electrically connected with the termination electrode of coil.The resistance ratio of the conducting bridge being electrically connected to form by section conductive traces is led positioned at other one layer The resistance of the conducting bridge phase in electric layer is little.

Further, the external conductive helical ring 3071 of Upper conductive layer, the external conductive helical ring of conductive layer at the middle and upper levels 2041, the external conductive helical ring 3011 of middle underlying conductive layer, placed face-to-face one by one；The inner conductive spiral shell of Upper conductive layer Rotation ring 3072, the inner conductive helical ring 3101 of conductive layer at the middle and upper levels, the inner conductive helical ring 3131 of middle underlying conductive layer, quilt Place face-to-face one by one.So, the geometric center spatially mutual calibration of all conductive helical rings of this coil.External conductive Helical ring 3011,3041,3071 have same or like shape, and equivalently-sized；Inner conductive helical ring 3131, 3101,3072 have same or like shape, and equivalently-sized.

Wherein Upper conductive layer, conductive layer at the middle and upper levels, middle underlying conductive layer, each of underlying conductive layer conductive traces By 1 pair of metallic conduction hole be adjacent conductive layer conductive traces electrical connection, the first end of each conductive traces and/or Second end is adjacent the conductive traces electrical connection of conductive layer by 1 pair of metallic conduction hole.In this embodiment, this coil First termination electrode 300 is electrically connected with the first end of the external conductive track 301 of middle underlying conductive layer, the second end electricity of this coil Pole 317 is electrically connected by the conducting bridge 316 positioned at underlying conductive layer with the inner conductive track 313 of middle underlying conductive layer.

Further, the second end of the external conductive track 301 of middle underlying conductive layer passes through 1 pair of metallic conduction hole 302, 303 are electrically connected with the first end of the external conductive track 304 of conductive layer at the middle and upper levels, at the middle and upper levels the external conductive track of conductive layer 304 second end is passed through 1 pair of metallic conduction hole 305,306 and is electrically connected with the first end of the conductive traces 307 of Upper conductive layer Connect, the second end of the conductive traces 307 of Upper conductive layer passes through 1 pair of metallic conduction hole 308,309 and conductive layer at the middle and upper levels The first end of inner conductive track 310 electrically connects, and the second end of the inner conductive track 310 of conductive layer passes through 1 at the middle and upper levels Metallic conduction hole 311,312 is electrically connected with the first end of the inner conductive track 313 of middle underlying conductive layer, middle underlying conductive The second end of the inner conductive track 313 of layer is electrically connected with conducting bridge 122 by 1 pair of metallic conduction hole 314,315.

In this utility model, electric current respectively flows through leading of each layer of conductive layer in plurality of conductive layers in an alternating fashion Electric track, that is, electric current the conductive traces of Upper conductive layer, at the middle and upper levels the conductive traces of conductive layer, in the conductive traces of middle lower floor Pass alternately over.In this embodiment, electric current flows into from the first termination electrode 300 of coil, in flowing through clockwise under The external conductive track 301 (i.e. conductive helical ring 3011) of layer conductive layer, by 1 pair of metallic conduction hole 302,303, along up time The external conductive track 304 (i.e. conductive helical ring 3041) of conductive layer at the middle and upper levels is flow through in pin direction, by 1 pair of metallic conduction hole 305,306, the conductive traces 307 flowing through Upper conductive layer clockwise (respectively flow through external conductive helical ring 3071, middle conductive helical ring 3072), by 1 pair of metallic conduction hole 308,309, flow through clockwise and lead at the middle and upper levels The inner conductive track 310 (i.e. inner conductive helical ring 3101) of electric layer, by 1 pair of metallic conduction hole 311,312, along up time The inner conductive track 313 (i.e. inner conductive helical ring 3131) of middle underlying conductive layer is flow through in pin direction, by 1 pair of metallic conduction Hole 314,315, flows through the conducting bridge 316 positioned at underlying conductive layer, flows out the second termination electrode 317 of this coil.This utility model Coil be used for making inductance device and other similar devices.

Preferably, the conductive traces 301,313 of this coil can also be ring segment conductive helical, i.e. conductive traces 301,313 Can be less than the conductive helical of a circle.First termination electrode and the of coil can be met by changing the length of conductive helical The putting position of two termination electrodes is to meet some special application needs.

Embodiment 4

Below in conjunction with Fig. 5, embodiment 4 of the present utility model to be described.Fig. 5 is another preferred coil of the present utility model Upper conductive layer, middle level conductive layer, the floor map of underlying conductive layer.The left side of Fig. 5 is Upper conductive layer, during the right is Layer conductive layer and the floor map of underlying conductive layer.In this floor map, this coil also includes metallic conduction hole, is used for Conductive traces in one layer of conductive layer are adjacent the conductive traces electrical connection of conductive layer.

This coil includes 3 layers of conductive layer, and wherein two layers conductive layer are Upper conductive layer respectively, middle level conductive layer, and in addition one Layer conductive layer is underlying conductive layer.Upper conductive layer includes 2 conductive traces 404,410, wherein external conductive track 404 be by 2 conductive helical ring 4041,4042 compositions, that is, external conductive track 404 is the conductive helical of 2 circles；Inner conductive track 410 It is that is, inner conductive track 410 is the conductive helical of 2 circles by 2 conductive helical rings 4101,4102 composition.Middle level conductive layer Including 3 conductive traces 401,407,413, its external conductive track 401 is made up of 1 conductive helical ring 4041, that is, outer Portion's conductive traces 401 are the conductive helical of 1 circle；Center conductor rail mark 407 is by 2 conductive helical rings 4071,4072 composition, I.e. center conductor rail mark 407 is the conductive helical of 2 circles；Inner conductive track 413 is made up of 1 conductive helical ring 4131, I.e. inner conductive track 413 is the conductive helical of 1 circle.This coil, by 8 spiral conducting rings, a conducting bridge composition, therefore should Coil is the coil of 8 circles, and all conductive helical rings and conducting bridge are all metallic traces, and are mutually isolated by insulant.

Other one layer of conductive layer is underlying conductive layer, and underlying conductive layer includes conductive traces, and this conductive traces is one Individual conducting bridge 416, each conductive traces of described coil are mutually isolated by insulant with other conductive traces, and institute Conductive traces are had all to be electrically connected formation coil.

Further, 4 conductive helical rings 4041,4042,4101,4102 of Upper conductive layer have same or like Shape, but be of different sizes, the geometric center of each conductive helical ring of Upper conductive layer overlaps, with neat side Formula arranges；4 conductive helical rings 4011,4071,4072,4131 of middle level conductive layer have same or like shape, but It is to be of different sizes, the geometric center of each conductive helical ring of conductive layer overlaps at the middle and upper levels, is arranged in the way of neat； In this embodiment, the shape of the conductive helical ring of plurality of conductive layers (Upper conductive layer, middle level conductive layer) is all octagon, and The spacing between adjacent conductive helical ring in each conductive layer is the same.The shape of conducting bridge 416 can be led with middle level Adjacent two side of the octagonal conductive helical ring 4131 of electric layer is same or like, and the size of conducting bridge 416 can be with The size on adjacent two side of the inner conductive helical ring 4131 of middle level conductive layer is identical.

In this embodiment, the conducting bridge 416 of other one layer of conductive layer (i.e. underlying conductive layer), conducting bridge 416 is used for will The inner conductive track 413 (i.e. inner conductive helical ring 4131) of middle level conductive layer is electrically connected with the second termination electrode 417.

In this embodiment, alternatively, in addition one layer of conductive layer can be replaced by other plurality of conductive layers, and other multilamellar Each layer of conductive layer in conductive layer includes section conductive traces, and described each section of conductive traces are placed in parallel one by one, And by 1 pair of metallic conduction hole electrical connection, thus section conductive traces can form a conducting bridge, electrically connected by section conductive traces The conducting bridge being formed and conducting bridge in other one layer of conductive layer have identical function, for by the conduction of described coil Track is electrically connected with the termination electrode of coil.The resistance ratio of the conducting bridge being electrically connected to form by section conductive traces is led positioned at other one layer The resistance of the conducting bridge phase in electric layer is little.

Further, the external conductive helical ring 4041 of Upper conductive layer, the external conductive helical ring of middle level conductive layer 4011 are placed face-to-face；China and foreign countries' conductive helical ring 4042 of Upper conductive layer, China and foreign countries' conductive helical ring of middle level conductive layer 4071 are placed face-to-face；Interior conductive helical ring 4101 in Upper conductive layer, interior conductive helical ring in the conductive layer of middle level 4072 are placed face-to-face；The inner conductive helical ring 4102 of Upper conductive layer, the inner conductive helical ring of middle level conductive layer 4131 are placed face-to-face；So, the geometric center spatially mutual calibration of all conductive helical rings of this coil.Outside is led Electric spiral 4041,4011 has same or like shape, and equivalently-sized；China and foreign countries' conductive helical ring 4042,4071 has Same or like shape, and equivalently-sized；In interior conductive helical ring 4101,4072 there is same or like shape, And it is equivalently-sized；Inner conductive helical ring 4102,4131 has same or like shape, and equivalently-sized.

Wherein Upper conductive layer, middle level conductive layer, each of underlying conductive layer conductive traces pass through 1 pair of metallic conduction Hole is adjacent the conductive traces electrical connection of conductive layer, and the first end of each conductive traces and/or second end are right by 1 Metallic conduction hole is adjacent the conductive traces electrical connection of conductive layer.In this embodiment, the first termination electrode 400 of this coil with The first end electrical connection of the external conductive track 401 of middle level conductive layer, the second termination electrode 417 of this coil is conductive with middle level The inner conductive track 413 of layer is electrically connected by the conducting bridge 416 positioned at underlying conductive layer.

Further, the second end of the external conductive track 401 of middle level conductive layer passes through 1 pair of metallic conduction hole 402, 403 are electrically connected with the first end of the external conductive track 404 of Upper conductive layer, the external conductive track 404 of Upper conductive layer Second end pass through the 1 pair of metallic conduction hole 405,406 and the first end of the inner conductive track 407 of middle level conductive layer is electrically connected Connect, the second end of the inner conductive track 407 of middle level conductive layer passes through 1 pair of metallic conduction hole 408,409 and Upper conductive layer Inner conductive track 410 first end electrical connection, the second end of the inner conductive track 410 of Upper conductive layer passes through 1 Metallic conduction hole 411,412 is electrically connected with the first end of the inner conductive track 413 of middle level conductive layer, middle level conductive layer The second end of inner conductive track 413 is electrically connected with conducting bridge 416 by 1 pair of metallic conduction hole 414,415.

In this utility model, electric current respectively flows through leading of each layer of conductive layer in plurality of conductive layers in an alternating fashion Electric track, that is, electric current pass alternately in the conductive traces, the conductive traces of middle level conductive layer of Upper conductive layer.In this enforcement In example, electric current flows into from the first termination electrode 400 of coil, flows through the external conductive track of middle level conductive layer clockwise 401 (i.e. external conductive helical rings 4011), by 1 pair of metallic conduction hole 402,403, flow through Upper conductive clockwise The external conductive track 404 (i.e. external helicoid conductive helical ring 4041, China and foreign countries' conductive helical ring 4042) of layer, by 1 pair of metal Conductive hole 405,406, flows through center conductor rail mark 407 (i.e. China and foreign countries' conductive helical ring of middle level conductive layer clockwise 4071, in interior conductive helical ring 4072), by 1 pair of metallic conduction hole 408,409, flow through Upper conductive clockwise The inner conductive track 410 (interior conductive helical ring 4101, inner conductive helical ring 4102 in i.e.) of layer, by 1 pair of metallic conduction Hole 411,412, is flow through the inner conductive track 413 (i.e. inner conductive helical ring 4131) of middle level conductive layer, is led by 1 pair of metal Electric hole 414,415, flows through the conducting bridge 416 positioned at middle level conductive layer, flows out the second termination electrode 417 of this coil.This practicality is new The coil of type is used for making inductance device and other similar devices.

Preferably, the conductive traces 401,413 of this coil can also be ring segment conductive helical, i.e. conductive traces 401,413 Can be less than the conductive helical of a circle.First termination electrode and the of coil can be met by changing the length of conductive helical The putting position of two termination electrodes is to meet some special application needs.

Embodiment five

Below in conjunction with Fig. 6, embodiment 5 of the present utility model to be described.Fig. 6 is another preferred coil of the present utility model Upper conductive layer, middle level conductive layer, the floor map of underlying conductive layer.The left side of Fig. 6 is Upper conductive layer, during the right is Layer conductive layer and underlying conductive layer.In this floor map, this coil also includes metallic conduction hole, for by one layer of conductive layer In conductive traces be adjacent conductive layer conductive traces electrical connection.

This coil includes 3 layers of conductive layer, and wherein two layers conductive layer are Upper conductive layer respectively, middle level conductive layer, and in addition one Layer conductive layer is underlying conductive layer.Upper conductive layer includes 1 conductive traces 504, and wherein conductive traces 504 are by 2 conductions Helical ring 5041,5042 compositions, that is, conductive traces 504 are the conductive helical of 2 circles.Middle level conductive layer includes 2 conductive traces 501,507, its external conductive track 501 is made up of 1 conductive helical ring 5011, and that is, external conductive track 501 is 1 circle Conductive helical；Inner conductive track 507 is made up of 1 conductive helical ring 5071, and that is, inner conductive track 507 is 1 circle Conductive helical.By 4 spiral conducting rings, a conducting bridge composition, therefore this coil is the coil of 4 circles to this coil, all conductions Helical ring and conducting bridge are all metallic traces, and are mutually isolated by insulant.Other one layer of conductive layer includes a conduction Track, this conductive traces is a conducting bridge 510, and each conductive traces of described coil are passed through absolutely with other conductive traces Edge material is mutually isolated, and all conductive traces are all electrically connected formation coil.

Further, 2 conductive helical rings 5041,5042 of Upper conductive layer have same or like shape, but It is to be of different sizes, the geometric center of each conductive helical ring of Upper conductive layer overlaps, and is arranged in the way of neat；In 2 conductive helical rings 5011,5071 of layer conductive layer have same or like shape, but are of different sizes, in The geometric center of each conductive helical ring of layer conductive layer overlaps, and is arranged in the way of neat.In this embodiment, multilayer conductive The shape of the conductive helical ring of layer (Upper conductive layer, middle level conductive layer) is all square, and adjacent in each layer of conductive layer Spacing between conductive helical ring is the same.The shape of conducting bridge 510 can be the conduction with the tetragon of middle level conductive layer One side of helical ring 5071 is same or like, and the size of conducting bridge 510 can be with the inner conductive spiral of middle level conductive layer The size on one side of ring 5071 is identical.

In this embodiment, the conducting bridge 510 of other one layer of conductive layer (i.e. underlying conductive layer), conducting bridge 510 is used for will The inner conductive track 507 (i.e. inner conductive helical ring 5071) of middle level conductive layer is electrically connected with the second termination electrode 511.

Further, the external conductive helical ring 5041 of Upper conductive layer, the external conductive helical ring of middle level conductive layer 5011 are placed face-to-face；The middle conductive helical ring 5042 of Upper conductive layer, the middle conductive helical ring of middle level conductive layer 5071 are placed face-to-face.So, the geometric center spatially mutual calibration of all conductive helical rings of this coil.Outside is led Electric spiral 5041,5011 has same or like shape, and equivalently-sized；Inner conductive helical ring 5042,5071 has Same or like shape, and equivalently-sized.

Wherein Upper conductive layer, middle level conductive layer, each of underlying conductive layer conductive traces pass through 1 pair of metallic conduction Hole is adjacent the conductive traces electrical connection of conductive layer, and the first end of each conductive traces and/or second end pass through 1 Metallic conduction hole is adjacent with the conductive traces electrical connection of conductive layer.In this embodiment, the first termination electrode 500 of this coil Electrically connect with the first end of the external conductive track 501 of middle level conductive layer, the second termination electrode 511 of this coil is conductive with middle level The inner conductive track 507 of layer is electrically connected by the conducting bridge 510 positioned at underlying conductive layer.

Further, the second end of the external conductive track 501 of middle level conductive layer passes through 1 pair of metallic conduction hole 502, 503 are electrically connected with the first end of the conductive traces 504 of Upper conductive layer, the second end of the conductive traces 504 of Upper conductive layer End is electrically connected with the first end of the inner conductive track 507 of middle level conductive layer by 1 pair of metallic conduction hole 505,506, middle level The second end of the inner conductive track 507 of conductive layer is electrically connected with conducting bridge 510 by 1 pair of metallic conduction hole 508,509.

In this utility model, electric current respectively flows through leading of each layer of conductive layer in plurality of conductive layers in an alternating fashion Electric track, that is, electric current pass alternately in the conductive traces, the conductive traces of middle level conductive layer of Upper conductive layer.In this enforcement In example, electric current flows into from the first termination electrode 500 of coil, flows through the external conductive track of middle level conductive layer clockwise 501 (i.e. external conductive helical rings 5011), by 1 pair of metallic conduction hole 502,503, flow through Upper conductive clockwise The conductive traces 504 (respectively flowing through external conductive helical ring 5041, inner conductive helical ring 5042) of layer, by 1 pair of metal Conductive hole 505,506, flows through inner conductive track 507 (the i.e. inner conductive helical ring of Upper conductive layer clockwise 5071), by 1 pair of metallic conduction hole 508,509, flow through the conducting bridge 510 positioned at underlying conductive layer, flow out the second of this coil Termination electrode 511.The coil of this utility model is used for making inductance device and other similar devices.

Preferably, the conductive traces 501,507 of this coil can also be ring segment conductive helical, i.e. conductive traces 501,507 Can be less than the conductive helical of a circle.First termination electrode and the of coil can be met by changing the length of conductive helical The putting position of two termination electrodes is to meet some special application needs.

Embodiment 6

Below in conjunction with Fig. 8, embodiment 6 of the present utility model to be described.Fig. 8 is another preferred coil of the present utility model Upper conductive layer, middle level conductive layer, the floor map of underlying conductive layer.The left side of Fig. 8 is Upper conductive layer, during the right is Layer conductive layer and the floor map of underlying conductive layer.In this floor map, this coil also includes metallic conduction hole, is used for Conductive traces in one layer of conductive layer are adjacent the conductive traces electrical connection of conductive layer.

This coil includes 3 layers of conductive layer, and wherein two layers conductive layer are Upper conductive layer respectively, middle level conductive layer, and in addition one Layer conductive layer is underlying conductive layer.Upper conductive layer includes 2 conductive traces 601,607, wherein external conductive track 601 be by 1 conductive helical ring 6011 composition, that is, external conductive track 601 is the conductive helical of 1 circle；Inner conductive track 607 be by 2 conductive helical ring 6071,6072 compositions, that is, inner conductive track 607 is the conductive helical of 2 circles.Middle level conductive layer includes 2 Individual conductive traces 604,610, its external conductive track 604 is to be made up of 2 conductive helical rings 6041,6042, and that is, outside is led Electric track 604 is the conductive helical of 2 circles；Inner conductive track 610 is made up of 1 conductive helical ring 6101, and that is, inside is led Electric track 610 is the conductive helical of 1 circle.This coil is made up of 6 spiral conducting rings, a conducting bridge 613, and therefore this coil is The coil of 6 circles, all conductive helical rings and conducting bridge are all metallic traces, and are mutually isolated by insulant.Other one layer Conductive layer includes conductive traces, and this conductive traces is a conducting bridge 613, and each conductive traces of described coil are all Metallic traces, and each conductive traces is mutually isolated by insulant, and all conductive traces are all electrically connected formation line Circle.

Further, 3 conductive helical rings 6011,6071,6072 of Upper conductive layer have same or like shape Shape, but it is of different sizes, and the geometric center of each conductive helical ring of Upper conductive layer overlaps, and is arranged in the way of neat Row；3 conductive helical rings 6041,6042,6101 of middle level conductive layer have same or like shape, but have difference Size, the geometric center of each conductive helical ring of middle level conductive layer overlapped, arranged in the way of neat；In this embodiment In, the shape of the conductive helical ring of plurality of conductive layers (Upper conductive layer, middle level conductive layer) is all tetragon, and each conductive layer In adjacent conductive helical ring between spacing be the same.Conductive bridge shape is a simple curve, in the present embodiment, The shape of conducting bridge 613 can be identical with a side of the conductive helical ring 6101 of the tetragon of middle level conductive layer or class Seemingly, the size of conducting bridge 613 can be identical with the size on a side of the inner conductive helical ring 6101 of middle level conductive layer.

In this embodiment, the conducting bridge 613 of other one layer of conductive layer (i.e. underlying conductive layer), conducting bridge 613 is used for will The inner conductive track 610 (i.e. inner conductive helical ring 6101) of middle level conductive layer is electrically connected with the second termination electrode 614.

Further, the external conductive helical ring 6011 of Upper conductive layer, the external conductive helical ring of middle level conductive layer 6041 are placed face-to-face；The middle conductive helical ring 6071 of Upper conductive layer, the middle conductive helical ring of middle level conductive layer 6042 are placed face-to-face；The inner conductive helical ring 6072 of Upper conductive layer, the inner conductive helical ring of middle level conductive layer 6101 are placed face-to-face；So, the geometric center spatially mutual calibration of all conductive helical rings of this coil.Outside is led Electric spiral 6011,6041 has same or like shape, and equivalently-sized；Middle conductive helical ring 6071,6042 has Same or like shape, and equivalently-sized；Inner conductive helical ring 6072,6101 has same or like shape, And it is equivalently-sized.

Wherein Upper conductive layer, middle level conductive layer, each of underlying conductive layer conductive traces pass through 1 pair of metallic conduction Hole is adjacent the conductive traces electrical connection of conductive layer, and the first end of each conductive traces and/or second end are right by 1 Metallic conduction hole is adjacent the conductive traces electrical connection of conductive layer.In this embodiment, the first termination electrode 600 of this coil with The first end electrical connection of the external conductive track 601 of Upper conductive layer, the second termination electrode 614 of this coil and middle level conductive layer Inner conductive track 610 electrically connected by the conducting bridge 613 positioned at underlying conductive layer.

Further, the second end of the external conductive track 601 of Upper conductive layer passes through 1 pair of metallic conduction hole 602, 603 are electrically connected with the first end of the external conductive track 604 of middle level conductive layer, the external conductive track 604 of middle level conductive layer Second end pass through the first end electricity in the 1 pair of metallic conduction hole 605,606 and the inside portion conductive traces 607 of Upper conductive layer Connect, the second end of the inner conductive track 607 of Upper conductive layer passes through 1 pair of metallic conduction hole 608,609 and middle level conduction The first end electrical connection of the inner conductive track 610 of layer, the second end of the inner conductive track 610 of middle level conductive layer is passed through 1 pair of metallic conduction hole 611,612 is electrically connected with conducting bridge 613.

In this utility model, electric current respectively flows through leading of each layer of conductive layer in plurality of conductive layers in an alternating fashion Electric track, that is, electric current pass alternately in the conductive traces, the conductive traces of middle level conductive layer of Upper conductive layer.In this enforcement In example, electric current flows into from the first termination electrode 600 of coil, flows through the external conductive track of Upper conductive layer clockwise 601 (i.e. external conductive helical rings 6011), by 1 pair of metallic conduction hole 602,603, flow through middle level conductive clockwise The external conductive track 604 (respectively flowing through external conductive helical ring 6041, middle conductive helical ring 6042) of layer, right by 1 Metallic conduction hole 605,606, the inner conductive track 607 flowing through Upper conductive layer clockwise is (in respectively flowing through Between conductive helical ring 6071, inner conductive helical ring 6072), by 1 pair of metallic conduction hole 608,609, clockwise Flow through the inner conductive track 610 (i.e. inner conductive helical ring 6101) of middle level conductive layer, by 1 pair of metallic conduction hole 611, 612, flow through the conducting bridge 613 positioned at underlying conductive layer, flow out the second termination electrode 614 of this coil.The coil of this utility model For making inductance device and other similar devices.

Preferably, the conductive traces 601,610 of this coil can also be ring segment conductive helical, i.e. conductive traces 601,610 Can be less than the conductive helical of a circle.First termination electrode and the of coil can be met by changing the length of conductive helical The putting position of two termination electrodes is to meet some special application needs.

Embodiment 7

This utility model further discloses a kind of inductance device, and Fig. 9 is the floor map of described inductance device.Described inductance 2 coils described by embodiment 3 for the device form, and are shown as the coil on the left side in Fig. 9, the coil on the right.The wherein left side Coil is 90 ° of coil rotate counterclockwise described in embodiment 3, and the coil on the right is the line described in embodiment 3 Circle turns clockwise 90 ° so that the geometric center of the coil on the left side has a displacement to the left, the geometric center of the coil on the right to Move right, two such coil can be electrically connected in the way of contacting, i.e. the first termination electrode of left side coil and right side bearing First termination electrode of circle connects.

Electric current flows into (i.e. the second termination electrode of the coil on the left side) from the first termination electrode 700 of inductance device, flows through and is located at The conducting bridge 701 of underlying conductive layer, by 1 pair of metallic conduction hole 702,703, counterclockwise flows through the interior of middle underlying conductive layer Portion's conductive traces 704, by 1 pair of metallic conduction hole 705,706, counterclockwise flow to the inner conductive rail of conductive layer at the middle and upper levels Mark 707, by 1 pair of metallic conduction hole 708,709, counterclockwise flows through the conductive traces 710 of Upper conductive layer, right by 1 Metallic conduction hole 711,712, counterclockwise flows through the external conductive track 713 of conductive layer at the middle and upper levels, by 1 pair of metallic conduction Hole 714,715, counterclockwise flows through the external conductive track 716 of middle underlying conductive layer, and electric current flows to the right from left side coil The external conductive track 717 of the middle underlying conductive layer of coil, by 1 pair of metallic conduction hole 718,719, in flowing to clockwise The external conductive track 720 of Upper conductive layer, by 1 pair of metallic conduction hole 721,722, flows to Upper conductive layer clockwise Conductive traces 723, by 1 pair of metallic conduction hole 724,725, flow to the inner conductive rail of conductive layer at the middle and upper levels clockwise Mark 726, by 1 pair of metallic conduction hole 727,728, flows to the inner conductive track 729 of middle underlying conductive layer, by 1 pair of metal Conductive hole 730,731, flows through the conducting bridge 732 positioned at underlying conductive layer, flows out the second termination electrode 733 of described inductance device (i.e. the second termination electrode of the right coil).

Yet with the rotation of coil, it is in counterclockwise to flow in the coil on the left side shown in Fig. 9 for the electric current, and electric current It is in flow clockwise in the coil on the right shown in Fig. 9.That is, the magnetic field that the coil on the left side is formed is positive magnetic , the magnetic field that the coil on the right is formed is negative fluxfield.

Therefore, two coils equal positive pole coupling, total inductance value of inductance coil is improved；Additionally, when inductance dress Put coil near other inductance components when can reduce or avoid mutual coupling.Finally, three-end electrode may be coupled to two The middle interconnecting piece of coil divides, i.e. the conductive traces 717 with the middle underlying conductive layer of left side coil, and the middle lower floor of the right coil leads The intermediate point of the conductive traces 718 of electric layer is connected.So a centre cap can be formed in the centre of two coils.

Embodiment 8

This utility model further discloses another preferred inductance device, and Figure 10 is that the plane of described inductance device is illustrated Figure.2 coils described by embodiment 6 for the described inductance device form, and are shown as the floor map on the left side in Figure 10, the right Floor map.The coil on the wherein left side is 90 ° of coil rotate counterclockwise described in embodiment 3, and the coil on the right is Coil described in embodiment 3 turns clockwise 90 ° so that the geometric center of the coil on the left side has a displacement to the left, The geometric center of the coil on the right moves right, and two such coil can be electrically connected in the way of contacting, i.e. left side bearing First termination electrode of circle and the first termination electrode electrical connection of the right coil.

Due to the rotation of coil, electric current flows into (i.e. the second end of the coil on the left side from the first termination electrode 800 of inductance device Electrode), then electric current clockwise flow in the coil on the left side, counterclockwise flow in electric current coil on the right.Therefore work as electric current When first termination electrode 800 of left side coil flows into, electric current flows through the conducting bridge 801 positioned at underlying conductive layer, by 1 pair of metal Conductive hole 802,803, flows through the inner conductive track 804 of middle level conductive layer clockwise, by 1 pair of metallic conduction hole 805, 606, flow to the inner conductive track 807 of Upper conductive layer clockwise, by 1 pair of metallic conduction hole 808,809, clockwise The external conductive track 810 of middle level conductive layer is flow through in direction, by 1 pair of metallic conduction hole 811,812, flows through clockwise The external conductive track 813 of layer conductive layer, the coil from the left side for the electric current flows into the coil on the right, counterclockwise flows through upper strata and leads The external conductive track 814 of electric layer, by 1 pair of metallic conduction hole 815,816, counterclockwise flows through the outside of middle level conductive layer Conductive traces 817, by 1 pair of metallic conduction hole 818,819, counterclockwise flow through the inner conductive track of Upper conductive layer 820, by 1 pair of metallic conduction hole 821,822, counterclockwise flow through the inner conductive track 823 of middle level conductive layer, by 1 To metallic conduction hole 824,825, flow through the conducting bridge 826 positioned at underlying conductive layer, flow out the second termination electrode 827 of inductance device (the second termination electrode of the right coil).

Yet with the rotation of coil, it is in flow clockwise in the coil on the left side shown in Figure 10 for the electric current, and electric In flowing clockwise in the coil on stream the right shown in Figure 10.That is, the magnetic field that the coil on the left side is formed is negative Magnetic field, the magnetic field that the coil on the right is formed is positive flux field.

Therefore, two coils equal positive pole coupling, total inductance value of inductance coil is improved；Additionally, when inductance dress Put coil near other inductance components when can reduce or avoid mutual coupling.Finally, three-end electrode may be coupled to two The middle interconnecting piece of coil divides, i.e. the conductive traces 817 with the middle underlying conductive layer of left side coil, and the middle lower floor of the right coil leads The intermediate point of the conductive traces 818 of electric layer is connected.So a centre cap can be formed in the centre of two coils.

It should be noted that based on above embodiment, it should be appreciated by those skilled in the art that the above embodiments are only It is to list, rather than to restriction of the present utility model.In fact the shape of the conductive helical ring described in this utility model is not only It is octagon, square, can also be circular, class square, similar octagon, oval, or the curve of other closures. The conductive number of plies being comprised should not be limited to 3 layers, 4 layers or 5 layers, the multilamellars such as 6 layers.The number of turns of coil also not only limits In 4,8,6,12 or 16.

In embodiment shown in this utility model, between the adjacent conductive helical ring in each conductive layer of inductance coil Spacing be equal, the width of conductive helical ring is the same.But in some specific embodiments, conductive helical ring Width is simultaneously not quite identical.In order to improve from frequency or Q-value, these parameters may be different.Specific in order to meet some Needs are put in position, the conductive helical ring electrically connecting with termination electrode can elongated or shorten, for example will electrically connect in termination electrode Conductive helical ring foreshorten to ring segment conductive helical ring, ring segment conductive helical fourth finger less than one circle conductive helical ring.Not only It is not limited to the description of embodiment of the present utility model, the second termination electrode can also be by conducting bridge and middle spiral conducting ring electricity Connect, or conducting bridge not only may be positioned only at Upper conductive layer or underlying conductive layer, conducting bridge can also be located at middle Conductive layer.

Therefore we can draw：Coil disclosed by this utility model has the following advantages that：

Compared with the inductance coil of only one layer of conductive layer, when the number of turns of inductance coil is identical, area is identical, then this practicality The inductance value of the inductance coil than only one layer of conductive layer for the inductance value of the inductance coil of new disclosure is big, adjacent conductive helical Including mutual coupling between ring is contemplated.

Electric current flows in an alternating fashion respectively from an external conductive track of described first termination electrode inflow line circle, electric current Cross the conductive traces belonging to different conductive layers, for example, flow through leading of its adjacent conductive layer from the external conductive track of one layer of conductive layer Electric track, flows through the conductive traces of the adjacent conductive layer of its adjacent layer conductive layer, with this from the conductive traces of its adjacent conductive layer The alternate path of sample flows to the inner conductive track electrically connecting with conducting bridge, flows through described conducting bridge, thus flowing out described Second termination electrode.Compared with the inductance coil of the plurality of conductive layers in background technology, the end electricity of inductance coil of the present utility model The parasitic coupling capacitance of the termination electrode of inductance coil than the plurality of conductive layers in background technology for the parasitic coupling capacitance of pole is little.Cause This, the improving from frequency or Q-value of inductance coil of the present utility model.

Because the size of current flowing through inductance coil is to be determined by the cross section in conductive traces, metallic conduction hole, therefore The size of current flowing through coil can be adjusted by the cross section size in change conductive traces, metallic conduction hole.

The inductance device of this utility model description is that turn clockwise 90 ° of shapes by 2 coils, 90 ° of rotate counterclockwise respectively Become, therefore two coils can be connected in the form of connecting, and so can reduce the section coupled capacitor of inductance device.

Therefore based on above embodiment, it should be appreciated by those skilled in the art that the above embodiments only list, and Non- to restriction of the present utility model.It is true that the coil having features described above belongs to category of the present utility model.Any it is familiar with this The understanding of technology all can carry out modifications and changes without prejudice under spirit and scope of the present utility model to above-described embodiment.Cause This, such as having in art is generally only this without departing under the spirit disclosed in this utility model and technological thought All equivalent modifications being completed or change, must be covered by claim of the present utility model.

In sum, the inductance coil that this utility model provides includes：Plurality of conductive layers, wherein each conductive layer are at least wrapped Include conductive traces, described conductive traces can be the conductive helical of a circle or the conductive helical of two circles or ring segment Conductive helical, wherein at least one conductive traces are the conductive helical of two circles；Other one layer of conductive layer, leads for described other one layer Electric layer includes conductive traces, and described conductive traces can be conducting bridge, and described conducting bridge is used for the second end electricity of coil Pole is electrically connected with one of plurality of conductive layers conductive traces；Another one in first termination electrode of coil and plurality of conductive layers Conductive traces electrically connect；All conductive traces of coil are all mutually isolated by insulant, and all conductive traces are all electric Connect and form coil.Preferably, each layer conductive layer of described coil can be by adopting semiconductor technology, integrated passive devices (IPD) technique or PCB technology preparation.

Technology contents

For accurate understanding this utility model, such as Fig. 6, shown in 7, by the analysis of the parasitic coupling capacitance to conductive helical ring Advantage of the present utility model can be illustrated.By Figure 11, the electric current of 12,13 introductions is theoretical, also can illustrate of the present utility model excellent Point.

As shown in figure 11,2 ideal wires are had (for sake of clarity, wire to be shown in the form of flat sheets by face-to-face placement Go out), described wire is mutually isolated by dielectric material, and described dielectric thickness is s, and dielectric layer constant is, and the length of every line is L/2, width is W.Under ideal case, the distribution of resistance equilibrium of wire, the pressure reduction along wire is also even variation.Lead for two The pressure reduction of the left end of line is 1V, and the pressure reduction of two wire right-hand members is 0V, then in differential voltage V along between the point x of x-axis optional position X () is represented by with the function of position x：

And then length is that two sections of dx of electric capacity is：

And then the electric energy of this wire institute energy storage can be expressed as：

Or it is：

So, described equivalent capacity can be expressed as：

Wherein, C_f2fIt is the capacitance when conductor wire right-hand member is opened a way between two conductor wires：

Based on described above it is assumed that as Fig. 6 and inductance coil illustrated in fig. 12 it is assumed that inner conductive helical ring and outside Conductive helical ring has identical length.When adding the voltage of 1V to inductance coil, the external conductive helical ring of Upper conductive layer Differential voltage and the external conductive helical ring of intermediate conductive layer between is to be fixing, is worth for 0.285V.Analogously, upper strata The differential voltage value between the inner conductive helical ring in inner conductive helical ring and intermediate conductive layer in conductive layer is also solid Fixed, it is worth for 0.285V.

The electric energy of storage in described inductor coil, and be related to the electric energy of two adjacent layers and can be approximately expressed as (passing through Form the electric energy being stored in the ring of embedding sleeve-like structure not accounting for, because separating distance may change)：

Wherein W is the width of conductive helical ring, and L is the length of coil all conductive helical ring, L_sectionIt is conductive helical The average length of ring, t_LMD1It is between the external conductive helical ring of Upper conductive layer and the external conductive helical ring of middle level conductive layer Distance, i.e. the thickness of metal dielectric layer, t_LMD1Be also Upper conductive layer inner conductive helical ring and middle level conductive layer interior The distance between portion's conductive helical ring；Due to t_LMD1Determined by technique, therefore the coupled capacitor of inductance coil can represent As follows：

Coil in background technology is as shown in Fig. 7 and Figure 13.When adding the voltage of 1V to coil, Upper conductive layer The differential voltage of the external conductive helical ring of external conductive helical ring and intermediate conductive layer is 0.8V～0.533V, Upper conductive layer In inner conductive helical ring and intermediate conductive layer in inner conductive helical ring between differential voltage value be also fixing, value For 0.266V.

The electric energy that this coil is stored can be expressed as：

Equivalent binding capacitance between the conductive helical ring that so described two-layer is placed face-to-face can be expressed as：

Wherein W is the width of conductive helical ring, and L is the length of coil all conductive helical ring, L_sectionIt is conductive helical The average length of ring, t_LMD1It is between the external conductive helical ring of Upper conductive layer and the external conductive helical ring of middle level conductive layer Distance, i.e. the thickness of metal dielectric layer.The coil as shown in Figure 7 with background technology is compared, the line described by this utility model The coupled capacitor of circle substantially reduces, and self-resonant frequency fSR significantly improves, and effectively improves the performance of coil, self-resonant frequency fSR Be expressed as follows：

Wherein, Ls is the inductance value of inductor coil, and Cp is to include in two-layer between aspectant conductive helical ring Electric capacity and the total capacitance of the adjacent conductive helical ring positioned at same layer.The number of conductive helical ring in same layer therefore can be increased Amount, or increase the number of plies of conductive layer, to obtain higher coupled capacitor.Therefore Q-value significantly improves.The computing formula of Q-value is such as Under：

As can be seen from the above analysis, the coil shown in embodiment Fig. 6 of the present utility model and Figure 12, Upper conductive layer Conductive helical ring and intermediate conductive layer conductive helical ring parasitic coupling capacitance than the line shown in prior art Fig. 7 and Figure 13 Circle reduces further.Therefore, this utility model compared with the prior art, has bigger industrial application value.

In sum, above-described embodiment only illustrative principle of the present utility model and its effect, not for restriction This utility model.Any understanding being familiar with this technology all can be without prejudice under spirit and scope of the present utility model, to above-mentioned reality Apply example and carry out modifications and changes, therefore, such as have in art usual knowledge this without departing from this utility model institute All equivalent modifications being completed under the spirit disclosing and technological thought or change, must be by claim institute of the present utility model Cover.

Claims

1. a kind of coil is it is characterised in that described coil at least includes：

Plurality of conductive layers, wherein each conductive layer at least include conductive traces, and described conductive traces can be leading of a circle The conductive helical of electric spiral or two circles or ring segment conductive helical, wherein at least one conductive traces are leading of two circles Electric spiral；

Other one layer of conductive layer, described other one layer of conductive layer includes conductive traces, and described conductive traces can be conductive Bridge, described conducting bridge is used for electrically connecting the second termination electrode of coil with one of plurality of conductive layers conductive traces；

All conductive traces of coil are all mutually isolated by insulant, and all conductive traces are all electrically connected formation line Circle.

2. coil according to claim 1 it is characterised in that：Other one layer of conductive layer can be by other plurality of conductive layers generation Replace, wherein in addition each conductive layer in plurality of conductive layers includes section conductive traces, and all sections of conductive traces are parallel Place, be mutually isolated by insulant, and the first end of each section of conductive traces and/or second end pass through a pair of metal Conductive hole is electrically connected with other section of conductive traces to form a conducting bridge.

3. coil according to claim 1 it is characterised in that：The first end of each conductive traces in plurality of conductive layers And/or second end pass through the conductive traces electrical connection of other conductive layers in a pair of metallic conduction hole and plurality of conductive layers with Form coil.

4. the coil according to claims 1 or 2 it is characterised in that：The conductive traces electrically connecting with conducting bridge are coils Inner conductive track, and be conductive helical or the ring segment conductive helical of a circle.

5. coil according to claim 4 it is characterised in that：The conductive traces electrically connecting with the first termination electrode are coils External conductive track, and be conductive helical or the ring segment conductive helical of a circle.

6. coil according to claim 5 it is characterised in that：Electric current is from of described first termination electrode inflow line circle Portion's conductive traces, flow into the conductive traces of its adjacent conductive layer from external conductive track, from the conductive traces of its adjacent conductive layer Flow into the conductive traces of the adjacent layer conductive layer of its adjacent layer conductive layer, flow into and conducting bridge electricity so that so alternate path is last The inner conductive track connecting, flows through described conducting bridge, thus flowing out described second termination electrode.

7. coil according to claim 1 it is characterised in that：The conductive helical ring of each conductive layer in plurality of conductive layers The conductive helical ring being adjacent conductive layer is placed one by one face-to-face, and in the geometry of conductive helical ring of each layer of conductive layer The heart is spatially aligned with each other with the geometric center of the conductive helical ring of other conductive layers.

8. coil according to claim 7 it is characterised in that：The shape of described conductive helical ring can be square, ellipse Circle, hexagon, octagon, one of circle.

9. a kind of inductance device it is characterised in that：Including the coil described in any one of multiple claim 1-8, wherein often Individual coil is all electrically connected in series to form inductance device.

10. a kind of circuit it is characterised in that：Including at least one inductance device as claimed in claim 9 and/or at least one Coil as claimed in claim 1.