CN108926362A - A kind of ultra-high density arrays energy converter - Google Patents
A kind of ultra-high density arrays energy converter Download PDFInfo
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- CN108926362A CN108926362A CN201810854702.4A CN201810854702A CN108926362A CN 108926362 A CN108926362 A CN 108926362A CN 201810854702 A CN201810854702 A CN 201810854702A CN 108926362 A CN108926362 A CN 108926362A
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- Prior art keywords
- earthing block
- lead
- several
- electrode
- signal
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
- A61B8/4488—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer the transducer being a phased array
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
- A61B8/4494—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer characterised by the arrangement of the transducer elements
Abstract
A kind of ultra-high density arrays energy converter, flexible printed circuit board include front surface, rear surface；Front surface is equipped with preceding ground lead, front signal lead；Rear surface is equipped with rear ground lead, rear signal lead；Piezoelectric material layer includes left earthing block, several piezoelectric vibrators, right earthing block；The top surface of each piezoelectric vibrator is equipped with oscillator ground electrode, and bottom surface is equipped with signal electrode；The bottom surface of matching material layer is conductive, and matching material layer is fixed on the top surface of left earthing block, several piezoelectric vibrators, right earthing block；The oscillator ground electrode of the left side ground electrode of matching material layer and left earthing block, the right side ground electrode of right earthing block and several piezoelectric vibrator top surfaces all realizes circuit connection；The odd number signal electrode of number and several rear signal leads realize circuit connection from left to right, and the even number signal electrode of number and several front signal leads realize circuit connection from left to right.The present invention does not need welding lead and lead is arranged in oscillator ground electrode.
Description
Technical field
The present invention relates to a kind of ultrasonic transducers of medical field, medical super more specifically to a kind of ultra high density
Sonic transducer.
Background technique
In modern medical service practice, ultrasonic image diagnosis equipment is widely used in heart, abdomen, urological department and gynemetrics
Medical diagnosis.Ultrasonic probe is the critical component of ultrasonic image diagnosis equipment, it and human contact, be responsible for transmitting ultrasonic wave and
The echo with tissue information returned from human body is received, and ultrasound system mainframe is returned by cable transmission, is closed calculating
Screen terminal is shown at the image that rear formation can be observed intuitively.
In general, ultrasonic probe (Ultrasound probe) includes ultrasonic transducer (Ultrasound
Transduce), shell and cable.Typical ultrasonic transducer includes lens material layer, matching materials on material composition
Layer, piezoelectric material layer and sound-absorbing material layer.Wherein piezoelectric material layer plays crucial electroacoustic transformation, it drives received electricity
The ultrasonic wave output that dynamic signal is converted to mechanical oscillation is emitted to human body, and inversely reflected ultrasonic wave can be converted
For measurable electric flux.
From the theoretical model of acoustics design, a piece of whole piezoelectric material needs to cut as by one-dimensional in the fabrication process
The piezoelectric vibrator of array or two-dimensional array regular distribution, by the driving for controlling the one or more oscillators being sent in array
Electric signal, to obtain the ideal sound field on room and time.Wherein have a design standard be oscillator and oscillator center away from
From the half that should be equal to or less than wavelength, to avoid there is undesirable sound field graing lobe.Therefore, more high-frequency transducing is made
Device, the spacing of layered transducer elements is with regard to smaller, that is to say, that array density is higher.
Any kind of energy converter, all has how electrode draws.Several hundred a oscillators of array energy transducer, it is each
The signal electrode and ground electrode of a oscillator are required to be reliably connected and can be worked normally, and wherein signal electrode needs independent separate
Connection, it is not possible to be shorted.Density is higher, the more array energy transducer of array number, and the difficulty of Manufacturing Techniques is bigger.Therefore,
Electrode connection is a ring the most key in high-performance array energy transducer manufacturing process.
In the various methods that electrode is drawn, welding lead method is that industry quotes relatively broad method.Using this side
Method, each oscillator require independent welding electrode lead, when oscillator quantity is up to several hundred a, the extremely time-consuming consumption of welding
Power.And when oscilaltor density is very high, when oscillator width very little, to become extremely difficult in oscillator surface welding lead.Moreover, welding
There are a drawback, the high temperature of welding to be easy to cause the depolarization of piezoelectric material, piezoelectric property is caused to lose for method.This method is
Through the needs for being unable to satisfy the development of energy converter manufacturing technology level.
For example, in one embodiment of the invention, the one-dimensional array energy converter of centre frequency 15MHz, oscillator distribution
Spacing is 0.1mm, and oscillator quantity is 256.Because oscillator width is minimum, and there are many oscillator quantity, therefore using traditional
The method of welding lead cannot achieve.
And if FPC uses single sided lead, lead center spacing is equal to oscillator center spacing, i.e. 0.1mm, in this way
FPC the limitation of current FPC technology working ability can not be produced.
Summary of the invention
The technical problem to be solved in the present invention is that: when overcoming existing ultra-high density arrays energy converter oscillator quantity more,
Welding lead extremely takes time and effort, and in the very difficult defect of oscillator surface welding lead, proposes that a kind of ultra-high density arrays change
The signal electricity of whole piezoelectric vibrators can conveniently and reliably be connected using a piece of flexible printed circuit board (i.e. FPC) for energy device
Pole and oscillator ground electrode, do not need welding lead, do not need that lead is in addition arranged in oscillator ground electrode, so as to realize height yet
The quick industrialized production of density array energy converter batch.
In order to solve the above-mentioned technical problem, the present invention proposes a kind of following technical proposal: ultra-high density arrays energy converter, packet
Include flexible printed circuit board, piezoelectric material layer, matching material layer；
Flexible printed circuit board includes front surface, rear surface；
Left and right both ends in front surface are located at left and right both ends in front surface respectively at least provided with a preceding ground lead
Several front signal leads are abreast equipped between preceding ground lead；
Left and right both ends in rear surface are located at left and right both ends in rear surface respectively at least provided with ground lead after one
Several rear signal leads are abreast equipped between ground lead afterwards；
Preceding ground lead, front signal lead, rear ground lead, rear signal lead top be all located at flexible printed circuit board
Top surface on；
Piezoelectric material layer includes left earthing block, several piezoelectric vibrators, right earthing block；
Left earthing block, several piezoelectric vibrators, right earthing block from left to right along it is arranged in a straight line and be fixed on flexible printing electricity
On the top surface of road plate；
There are certain intervals between left earthing block and a leftmost piezoelectric vibrator；
It has fallen fillet between the top and bottom of left earthing block, has all been wrapped at the top surface of left earthing block, bottom surface and rounded corner
It is covered with conduction bound edge made of conductive material, conductive bound edge is used as left side ground electrode；
There are certain intervals between two adjacent piezoelectric vibrators；
The top surface of each piezoelectric vibrator is equipped with oscillator ground electrode, and bottom surface is equipped with signal electrode；
There are certain intervals between right earthing block and a piezoelectric vibrator of rightmost；
It has fallen fillet between the top and bottom of right earthing block, has all been wrapped at the top surface of right earthing block, bottom surface and rounded corner
It is covered with conduction bound edge made of conductive material, conductive bound edge is used as right side ground electrode；
The bottom surface of matching material layer is conductive, and matching material layer is fixed on left earthing block, the vibration of several piezoelectricity
On the top surface of sub, right earthing block；
The left side ground electrode of matching material layer and left earthing block, the right side ground electrode of right earthing block and several piezoelectricity shake
The oscillator ground electrode of sub- top surface all realizes circuit connection；
The left side ground electrode and flexible printed circuit board of left earthing block are located at the preceding ground lead and rear ground lead of left end
Realize circuit connection；
The right side ground electrode and flexible printed circuit board of right earthing block are located at the preceding ground lead and rear ground lead of right end
Realize circuit connection；
The odd number signal electrode of number and several rear signal leads realize circuit connection from left to right, count from left to right
Even number signal electrode and several front signal leads realize circuit connection；Or the even number signal counted from left to right
Electrode and several rear signal leads realize circuit connection, from left to right the odd number signal electrode and several front signals of number
Lead realizes circuit connection.
The above technical solution is further limited in that the left and right both ends in front surface be respectively provided with one it is above-mentioned before
Ground lead, the left and right both ends in rear surface are respectively provided with an above-mentioned rear ground lead.
Compared with prior art, the present invention has following the utility model has the advantages that ultra-high density arrays energy converter of the present invention, uses one
Piece flexible printed circuit board (i.e. FPC) is electric signal electrode and the oscillator of whole piezoelectric vibrators can conveniently and reliably be connected
Pole, does not need welding lead, does not need that lead is in addition arranged in oscillator ground electrode yet, so as to realize high density arrays transducing
The quick industrialized production of device batch.
Detailed description of the invention
Fig. 1 is the perspective view of ultra-high density arrays energy converter (part-structure) of the present invention.
Fig. 2 is the perspective view of the piezoelectric vibrator of single of the present invention.
Fig. 3 is the partial enlarged view of Fig. 1.
Fig. 4 is the partial enlarged view (indicating electrode) of Fig. 1.
Specific embodiment
A kind of ultra-high density arrays energy converter referring to FIG. 1 to FIG. 4, comprising flexible printed circuit board (FPC) 1,
Piezoelectric material layer 2, matching material layer 3.
Flexible printed circuit board 1 includes front surface 12, rear surface 14.
Left and right both ends in front surface 12 are respectively provided with a preceding ground lead 121.
It is located between two preceding ground leads 121 in front surface 12 and is abreast equipped with several front signal leads 123.
Ground lead 141 after left and right both ends in rear surface 14 are respectively provided with one.
Several rear signal leads 143 are abreast equipped with after being located at two in rear surface 14 between ground lead 141.
Preceding ground lead 121, front signal lead 123, rear ground lead 141, rear signal lead 143 top be all located at it is soft
On the top surface of property printed circuit board 1.
Piezoelectric material layer 2 includes left earthing block 22, several piezoelectric vibrators 24, right earthing block 26.
Left earthing block 22, several piezoelectric vibrators 24, right earthing block 26 are from left to right along arranged in a straight line and be fixed on flexibility
On the top surface of printed circuit board 1.
There are certain intervals between left earthing block 22 and a leftmost piezoelectric vibrator 24.
Fillet is fallen between the top and bottom of left earthing block 22.
It is all coated with conduction bound edge 221 made of conductive material at the top surface of left earthing block 22, bottom surface and rounded corner, is led
Electric bound edge 221 is used as left side ground electrode 223.
There are certain intervals between two adjacent piezoelectric vibrators 24.
The top surface of each piezoelectric vibrator 24 is equipped with oscillator ground electrode 241, and bottom surface is equipped with signal electrode 243.
There are certain intervals between right earthing block 26 and a piezoelectric vibrator 24 of rightmost.
Fillet is fallen between the top and bottom of right earthing block 26, at the top surface of right earthing block 26, bottom surface and rounded corner
It is all coated with conduction bound edge 261 made of conductive material, conductive bound edge 261 is used as right side ground electrode 263.
The bottom surface of matching material layer 3 is conductive.
Matching material layer 3 is fixed on the top surface of left earthing block 22, several piezoelectric vibrators 24, right earthing block 26.
The left side ground electrode 223 of matching material layer 3 and left earthing block 22, the right side ground electrode 263 of right earthing block 26 and
The oscillator ground electrode 241 of several 24 top surfaces of piezoelectric vibrator all realizes circuit connection.
From left to right number odd number signal electrode 243 (i.e. from left to right the 1st signal electrode 243 of number, the 3rd letter
Number electrode 243, the 5th signal electrode 243 ...) with several rear signal leads 143 realize circuit connections.It counts from left to right
Even number signal electrode 243 (i.e. the 2nd signal electrode 243 of number, the 4th signal electrode 243, the 6th signal electricity from left to right
Pole 243 ...) and several front signal leads 123 realization circuit connection.Therefore, the front surface 12 of flexible printed circuit board 1 is drawn
Count signal corresponding to all odd number signal electrodes 243, the rear surface 14 of flexible printed circuit board 1 from left to right out
Extraction counts signal corresponding to all even number signal electrodes 243 from left to right.
The left side ground electrode 223 of left earthing block 22 and flexible printed circuit board 1 be located at left end preceding ground lead 121 and after
Ground lead 141 realizes circuit connection.
The right side ground electrode 263 of right earthing block 26 and flexible printed circuit board 1 be located at right end preceding ground lead 121 and after
Ground lead 141 realizes circuit connection.
Therefore, matching material layer 3, left side ground electrode 223, right side ground electrode 263 and several 24 top surfaces of piezoelectric vibrator
Oscillator ground electrode 241 and flexible printed circuit board 1 realize circuit connection.
The present invention have it is following the utility model has the advantages that
1, the signal electrode 243 that the wherein side of flexible printed circuit board 1 is used to draw on odd ordinal positions is corresponding
Signal, the other side are used to draw the corresponding signal of signal electrode 243 on even ordinal positions.Because of flexible printed circuit board 1
Using the scheme of two sides lead, then two adjacent front signal leads 123 and two phases on flexible printed circuit board 1
Spacing between adjacent rear signal lead 143 is twice of center-spaced of two adjacent piezoelectric vibrators 24, therefore can be made
Make the transducer array of ultra high density.Such as: in the present invention, the one-dimensional array energy converter of centre frequency 15MHz, piezoelectric vibrator
24 distribution spacing is 0.1mm, then the center spacing of the front signal lead 123 of its flexible printed circuit board 1 and rear signal
The center spacing of lead 143 is all 0.2mm, this is easy to accomplish in FPC production technology.
2, left earthing block 22, the right earthing block 26 at the left and right both ends of piezoelectric material layer 2 have rounded corner, left earthing block 22, the right side
The surface of earthing block 26 is all coated with conduction bound edge 221,261 made of conductive material and is used as left side ground electrode 223, right side
Electrode 263 can guarantee left earthing block 22, the top and bottom of right earthing block 26 are realized and conducted, the oscillator of piezoelectric vibrator 24
Electrode 241 is connected to flexible printed circuit board by the conductive rounded corner of matching material layer 3 and left earthing block 22, right earthing block 26
1 preceding ground lead 121 and rear ground lead 141.
Claims (2)
1. a kind of ultra-high density arrays energy converter, which is characterized in that its include flexible printed circuit board, piezoelectric material layer,
With material layer；
Flexible printed circuit board includes front surface, rear surface；
Left and right both ends in front surface connect before being located at left and right both ends in front surface respectively at least provided with a preceding ground lead
Several front signal leads are abreast equipped between ground lead；
Left and right both ends in rear surface are located at being followed by for left and right both ends in rear surface respectively at least provided with ground lead after one
Several rear signal leads are abreast equipped between ground lead；
Preceding ground lead, front signal lead, rear ground lead, rear signal lead top be all located at the top of flexible printed circuit board
On face；
Piezoelectric material layer includes left earthing block, several piezoelectric vibrators, right earthing block；
Left earthing block, several piezoelectric vibrators, right earthing block are from left to right along arranged in a straight line and be fixed on flexible printed circuit board
Top surface on；
There are certain intervals between left earthing block and a leftmost piezoelectric vibrator；
It has fallen fillet between the top and bottom of left earthing block, has all been coated at the top surface of left earthing block, bottom surface and rounded corner
Conduction bound edge made of conductive material, conductive bound edge are used as left side ground electrode；
There are certain intervals between two adjacent piezoelectric vibrators；
The top surface of each piezoelectric vibrator is equipped with oscillator ground electrode, and bottom surface is equipped with signal electrode；
There are certain intervals between right earthing block and a piezoelectric vibrator of rightmost；
It has fallen fillet between the top and bottom of right earthing block, has all been coated at the top surface of right earthing block, bottom surface and rounded corner
Conduction bound edge made of conductive material, conductive bound edge are used as right side ground electrode；
The bottom surface of matching material layer is conductive, and matching material layer is fixed on left earthing block, several piezoelectric vibrators, the right side
On the top surface of earthing block；
The left side ground electrode of matching material layer and left earthing block, the right side ground electrode of right earthing block and several piezoelectric vibrator tops
The oscillator ground electrode in face all realizes circuit connection；
The left side ground electrode and flexible printed circuit board of left earthing block are located at the preceding ground lead of left end and rear ground lead is realized
Circuit connection；
The right side ground electrode and flexible printed circuit board of right earthing block are located at the preceding ground lead of right end and rear ground lead is realized
Circuit connection；
The odd number signal electrode of number and several rear signal leads realize circuit connections from left to right, from left to right the of number
Even number signal electrode and several front signal leads realize circuit connection；Or the even number signal electrode counted from left to right
Circuit connection is realized with several rear signal leads, from left to right the odd number signal electrode and several front signal leads of number
Realize circuit connection.
2. a kind of ultra-high density arrays energy converter according to claim 1, which is characterized in that left and right two in front surface
End is respectively provided with an above-mentioned preceding ground lead, and the left and right both ends in rear surface are respectively provided with an above-mentioned rear grounding lead
Line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810854702.4A CN108926362A (en) | 2018-07-30 | 2018-07-30 | A kind of ultra-high density arrays energy converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810854702.4A CN108926362A (en) | 2018-07-30 | 2018-07-30 | A kind of ultra-high density arrays energy converter |
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| Publication Number | Publication Date |
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| CN108926362A true CN108926362A (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810854702.4A Pending CN108926362A (en) | 2018-07-30 | 2018-07-30 | A kind of ultra-high density arrays energy converter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112162168A (en) * | 2020-09-29 | 2021-01-01 | 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) | Signal extraction method and system of multi-channel high-frequency receiving transducer array |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07131895A (en) * | 1993-11-08 | 1995-05-19 | Toshiba Corp | Two-dimensional array type ultrasonic probe and its production |
| JP2001309493A (en) * | 2000-04-19 | 2001-11-02 | Toshiba Corp | Two-dimensional array ultrasound probe and manufacturing method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112162168A (en) * | 2020-09-29 | 2021-01-01 | 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) | Signal extraction method and system of multi-channel high-frequency receiving transducer array |
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