A method for manufacturing an electrode lead-out material, an electrode lead-out material, and an ultrasonic transducer

Abstract

The application relates to the field of ultrasonic transducers, and provides a manufacturing method of electrode lead-out material, electrode lead-out material and an ultrasonic transducer. The manufacturing method of the electrode lead-out material comprises the following steps: sequentially and intervally stacking a plurality of first layers made of specific acoustic performance material and a plurality of second layers made of conductive material to form a conductive block; cutting the conductive block along the stacking direction of the first layers and the second layers into a plurality of conductive pieces which are arranged at intervals along the length direction of the conductive block; and cutting the conductive pieces along the stacking direction of the first layers and the second layers into a plurality of conductive strips which are arranged at intervals along the width direction of the conductive block, and the second layers form at least one first conductive channel on the conductive strips. The application utilizes the plurality of first layers and the plurality of second layers to be sequentially and intervally stacked into the conductive block, and then the conductive block is cut into the conductive strips. The conductive strips can be used as excellent electrode lead-out material to connect the piezoelectric material and the circuit board, and the traditional electrode lead-out material is free from the limitation of needing to be cut into grooves, and the preparation efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ultrasonic transducer, and further relates to a manufacturing method of electrode lead-out material, electrode lead-out material and ultrasonic transducer. BACKGROUND

[0002] Medical ultrasonic transducer is the core device of medical ultrasonic imaging, which is usually composed of backing layer, piezoelectric material layer and several matching layers. In the manufacturing process of the ultrasonic transducer, the backing layer, the piezoelectric material layer and the several matching layers are usually bonded to form a stack, and then cut into several independent working elements at certain intervals. The piezoelectric material in each element has two electrodes, signal electrode and ground electrode. The lead-out of the signal electrode and the ground electrode is usually to add a layer of conductive material with specific acoustic properties between the circuit board and the piezoelectric material. This material can not only connect the electrodes of the piezoelectric material to the circuit board, but also reduce the influence of the circuit board on the performance of the transducer.

[0003] The conductive material with specific acoustic properties is artificially processed. First, by mixing one or more fine particle materials with certain particle size and impedance into the high molecular glue, the specific acoustic properties of the material are realized, that is, high acoustic attenuation and specific acoustic impedance. Then, after the material configuration is completed, the conductive function of the material is realized by cutting and filling the conductive material, and finally the material is thinned. The main bottleneck of the cutting is that the thickness of the blade will limit the width of the cutting, and the width of the cutting will limit the selection of the filling material. If the cutting width is too narrow, the filling material needs to be very thin. If the filling material is solid, it is easy to break during operation. If the filling material is conductive glue, it may not be able to completely fill the cutting gap. SUMMARY

[0004] In view of the above technical problems, the purpose of the present application is to provide a manufacturing method of electrode lead-out material, electrode lead-out material and ultrasonic transducer. The present application uses a plurality of first layers made of specific acoustic property material and a plurality of second layers made of conductive material to form a conductive block by layering in sequence and spacing, and then cuts the conductive block into a conductive strip. The plurality of second layers on the conductive strip form a plurality of first conductive channels, and the first conductive channels connect the upper and lower surfaces of the conductive strip, so that the conductive strip can be used as an excellent electrode lead-out material to connect the piezoelectric material and the circuit board, and the limitation of traditional electrode lead-out material is eliminated, and the preparation efficiency is high.

[0005] In order to achieve the above purpose, the present application provides a manufacturing method of electrode lead-out material, comprising:

[0006] a plurality of first layers made of specific acoustic property material and a plurality of second layers made of conductive material are sequentially and spaced layered to form a conductive block;

[0007] cutting the conductive block along the stacking direction of the first sheet layer and the second sheet layer into a plurality of conductive sheets arranged at intervals along the length direction of the conductive block;

[0008] cutting the conductive sheets along the stacking direction of the first sheet layer and the second sheet layer into a plurality of conductive strips arranged at intervals along the width direction of the conductive block, the second sheet layer forming at least one first conductive channel on the conductive strips.

[0009] In some embodiments, sequentially and intervally stacking a plurality of first sheet layers made of a specific acoustic performance material and a plurality of second sheet layers made of a conductive material to form a conductive block specifically comprises: according to the cross-sectional requirements of the first conductive channel, setting the longitudinal cross-section of the second sheet layer to a corresponding shape;

[0010] matching the longitudinal cross-section of the first sheet layer with the longitudinal cross-section of the second sheet layer;

[0011] sequentially and intervally stacking the first sheet layer and the second sheet layer so that the second sheet layer is tightly pressed between adjacent first sheet layers.

[0012] In some embodiments, a plurality of arrayed through holes are formed on the second sheet layer, and the through holes on the second sheet layer are filled with glue when the first sheet layer and the second sheet layer are stacked;

[0013] the second sheet layer is tightly pressed between adjacent first sheet layers.

[0014] In some embodiments, further comprising: according to the electrode lead-out requirements, a third sheet layer made of a conductive material is provided below the first conductive channel of the conductive strip, and the third sheet layer is adapted to lead out from the side of the conductive strip;

[0015] a fourth sheet layer made of a specific acoustic performance material is pasted below the third sheet layer, so that the third sheet layer is arranged between the conductive strip and the fourth sheet layer and forms a second conductive channel.

[0016] In some embodiments, the double sides of the conductive sheet and / or the conductive strip are thinned so that the conductive strip meets the design size.

[0017] According to another aspect of the present application, an electrode lead-out material is further provided, comprising a first sheet layer and a second sheet layer, a plurality of second sheet layers are intervally arranged between a plurality of first sheet layers, the second sheet layer connects the upper and lower ends of the first sheet layer and forms a plurality of first conductive channels on the first sheet layer. In some embodiments, the first conductive channel is distributed in a strip or a dot on the conductive strip.

[0018] In some embodiments, the longitudinal section of the first conductive channel is any one of a rectangle, a convex shape, or an L shape.

[0019] In some embodiments, a lead-out layer is further included, the lead-out layer is arranged below the first conductive channel of the first sheet layer, and a second conductive channel is arranged between the lead-out layer and the first sheet layer, the second conductive channel connects a plurality of the first conductive channels.

[0020] According to another aspect of the present application, an ultrasonic transducer is further provided, including any one of the electrode lead-out materials, piezoelectric materials, and circuit boards of the preferred embodiments, the electrode lead-out material electrically connects the piezoelectric material and the circuit board.

[0021] Compared with the prior art, the electrode lead-out material manufacturing method, electrode lead-out material, and ultrasonic transducer provided by the present application have at least one of the following beneficial effects:

[0022] 1. The present application uses a plurality of first sheet layers made of a specific acoustic performance material and a plurality of second sheet layers made of a conductive material to be sequentially and spacedly stacked into a conductive block, and then the conductive block is cut into a conductive strip, and the plurality of second sheet layers on the conductive strip form a plurality of first conductive channels, the first conductive channels electrically connect the upper and lower surfaces of the conductive strip, so that the conductive strip can be used as an excellent electrode lead-out material to connect the piezoelectric material and the circuit board, and the traditional electrode lead-out material is free from the limitation of needing to be cut into grooves, and the preparation efficiency is high.

[0023] 2. According to the cross-sectional requirements of the first conductive channel, the longitudinal section of the second sheet layer is arranged in a corresponding shape, and the lead-out position of the first conductive channel is directly changed in the preparation process, avoiding the need to set a lead-out layer according to the lead-out direction again in the later stage, the operation is simple, the operation steps are reduced, and the preparation efficiency is improved.

[0024] 3. The lead-out layer can also be arranged below the conductive strip, the second conductive channel is arranged on the lead-out layer, the second conductive channel communicates with the first conductive channel and changes the electrical connection direction of the conductive strip, so that it can meet the design requirements of various application scenarios and projects, the operation is simple, and the cost is low.

[0025] 4. The plurality of second sheet layers are spacedly arranged between the plurality of first sheet layers, so that the second sheet layers form the first conductive channels on the first sheet layers, and the second sheet layers electrically connect the upper and lower ends of the first sheet layers, thereby ensuring the electrical conductivity and reliability of the upper and lower surfaces of the first sheet layers.

[0026] 5. The present application can effectively avoid the shrinkage deformation towards the slot side due to the curing of the glue filled in the slot for bonding the conductive strips, and the uneven thickness of the glue on both sides of the conductive strips (usually more than 10 microns), which affect the acoustic performance of the electrode lead-out material, after the slot is cut on the surface of the material with specific acoustic performance in the traditional way; the thickness of the glue layer on both sides of the conductive strips can be controlled within 2 microns by using the laminating method, and the deformation of the glue layer during curing can be ignored, thereby ensuring the accuracy of the positions of the conductive strips and improving the consistency between the electrode lead-out materials. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above-mentioned features, technical characteristics, advantages and implementation methods of the present application will be further described in the following preferred embodiments in a clear and understandable manner combined with the drawings.

[0028] Figure 1 is a flow chart of a manufacturing method of an electrode lead-out material;

[0029] Figure 2 is a structural diagram of a conductive block;

[0030] Figure 3 is a cutting diagram of the conductive block;

[0031] Figure 4 is a structural diagram of a conductive sheet;

[0032] Figure 5 is a structural diagram of a conductive strip;

[0033] Figure 6 is a structural diagram of a second sheet in another embodiment;

[0034] Figure 7 is a cutting diagram of a conductive block in another embodiment;

[0035] Figure 8 is a structural diagram of a first conductive channel point distribution;

[0036] Figure 9 is a structural diagram of a lead-out layer;

[0037] Figure 10 is a structural diagram of a lead-out layer in another embodiment;

[0038] Figure 11 is a structural diagram of a lead-out layer in still another embodiment;

[0039] Figure 12 is a structural diagram of an ultrasonic transducer.

[0040] BRIEF DESCRIPTION OF DRAWINGS

[0041] Conductive block 1, conductive sheet 11, conductive strip 12, first conductive channel 121, lead-out layer 122, second conductive channel 123, first sheet layer 2, second sheet layer 3, through hole 31, third sheet layer 4, fourth sheet layer 5, piezoelectric material 6, circuit board 7. DETAILED DESCRIPTION

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0043] In order to make the drawing simple, only the parts related to the invention are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one".

[0044] It should be further understood that the term "and / or" used in the specification and claims of the present application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0045] In this paper, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In addition, in the description of the present application, the terms "first", "second" and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance. It should be noted that the above examples can be freely combined according to the needs. The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can also be made, which should be regarded as the protection scope of the present application.

[0047] Reference Figures 1 to 8The application provides a manufacturing method of electrode lead-out material, and the electrode lead-out material is prepared by cutting a conductive block 1 into a conductive strip 12, the conductive block 1 is formed by sequentially and alternately stacking a plurality of first layers 2 made of a specific acoustic performance material and a plurality of second layers 3 made of a conductive material, and the plurality of second layers 3 on the conductive strip 12 form a plurality of first conductive channels 121, the first conductive channels 121 are connected to the upper and lower surfaces of the conductive strip 12, so that the conductive strip 12 can be used as an excellent electrode lead-out material to connect a piezoelectric material 6 and a circuit board 7, and the electrode lead-out material is free from the limitation of needing to cut a groove in the traditional electrode lead-out material, and the preparation efficiency is high. Meanwhile, the shrinkage deformation towards the groove side caused by filling glue used for bonding the conductive strip 12 in the groove and the large (generally more than 10 microns) and uneven thickness of the glue on both sides of the conductive strip 12 can be effectively avoided, so as to affect the acoustic performance of the electrode lead-out material. Since the laminating method is used, the thickness of the glue layer on both sides of the conductive strip 12 can be controlled to be within 2 microns, and the deformation of the glue layer during solidification can be ignored, so as to ensure the accuracy of the positions of the conductive strips 12 and improve the consistency between the electrode lead-out materials.

[0048] A manufacturing method of electrode lead-out material comprises:

[0049] S101 sequentially and alternately stack a plurality of first layers 2 made of a specific acoustic performance material and a plurality of second layers 3 made of a conductive material to form a conductive block 1.

[0050] In the embodiment, the first layers 2 are made of a specific acoustic performance material, and the second layers 3 are made of a conductive material, and the specific acoustic performance material and the conductive material are not limited in the application and are common materials in the field, which can be selected according to product requirements. The plurality of first layers 2 and the plurality of second layers 3 are sequentially and alternately stacked, so that all the second layers 3 are clamped between a pair of first layers 2, that is, the upper and lower surfaces of each second layer 3 are provided with a first layer 2, and the plurality of second layers 3 are pressed and combined between adjacent two first layers 2 to form the conductive block 1, wherein the number of the first layers 2 is more than two, and the number of the second layers 3 is at least one. The conductive block 1 can be cut along the stacking direction of the first layers 2 and the second layers 3, that is, the thickness direction of the conductive block 1.

[0051] Specifically, the specific acoustic performance refers to the performance of the acoustic parameters such as the speed of sound, density and acoustic attenuation of the material within a certain range. In the patent, the material with specific acoustic performance refers to a material with a speed range of 550 m / s to 3500 m / s, a density of 300 kg / m 3 ~3500 kg / m 3 , and an acoustic attenuation of ≤40 dB / mm / Hz. Reference Figures 2 to 5The first sheet layer 2 made of a specific acoustic performance material and the second sheet layer 3 made of a conductive material are sequentially and alternately stacked to form the conductive block 1, which specifically comprises: according to the cross-sectional requirements of the first conductive channel 121, the longitudinal section of the second sheet layer 3 is set to a corresponding shape. The longitudinal section of the first sheet layer 2 is matched with the longitudinal section of the second sheet layer 3. Then, the first sheet layer 2 and the second sheet layer 3 are sequentially and alternately stacked so that the second sheet layer 3 is tightly pressed between the adjacent first sheet layer 2.

[0052] In this embodiment, according to the cross-sectional requirements of the first conductive channel 121, the longitudinal section of the second sheet layer 3 is set to a corresponding shape, which can directly change the lead-out position of the first conductive channel 121 by changing the longitudinal section of the second sheet layer 3 during the preparation process, avoid setting the lead-out layer 122 again according to the lead-out direction, reduce the operation steps, and improve the preparation efficiency. At this time, the first conductive channel 121 is distributed along the long strip on the conductive strip 12, that is, the conductive strip 12 is provided with a plurality of straight or non-straight first conductive channels 121. The longitudinal section of the first conductive channel 121 is any one of a rectangle, a convex shape, and an L shape. This first conductive channel 121 can be prepared on the same conductive strip 12, and the third sheet layer 4 with a corresponding shape is stacked between the second sheet layer 3, or it can be formed by two conductive strips 12, that is, the two conductive strips 12 are pasted together so that the conductive channels of the two conductive strips 12 are connected.

[0053] When the convex-shaped first conductive channel 121 is to be prepared, the second sheet layer 3 needs to be divided into two parts, and the thicknesses of the two parts are different. The second sheet layer 3 materials with different thicknesses are stacked with the first sheet layer 2 to make two kinds of conductive strips 12 embedded with conductive materials with different thicknesses. Then, the conductive channels in the two kinds of conductive strips 12 are aligned and stacked.

[0054] When the L-shaped first conductive channel 121 is to be prepared, two kinds of conductive strips 12 need to be prepared first. The first kind of conductive strip 12 has conductive materials embedded in the first sheet layer 2 by stacking, and the second kind of conductive strip 12 has conductive materials pasted on the surface of the first sheet layer 2 by stacking. The first kind of conductive strip 12 and the second kind of conductive strip 12 are stacked, wherein the first kind of conductive strip 12 is used for the upward and downward electrode lead-out, and the second kind of conductive strip 12 is used for the left and right electrode lead-out. After the two kinds of conductive strips 12 are stacked, the function of L-shaped electrode lead-out is realized. When stacking, at least one conductive channel in the first kind of conductive strip 12 is electrically connected with the conductive layer on the second kind of conductive strip 12. At this time, the first conductive channel 121 is located on the side of the conductive strip 12, and the circuit board 7 is also located on the side of the conductive strip 12, and the electrodes of the piezoelectric material 6 are led out from the side.

[0055] In the transformed embodiment, reference is made to Figures 6 to 8The plurality of first layers 2 made of a specific acoustic performance material and the plurality of second layers 3 made of a conductive material are sequentially and spaced stacked to form the conductive block 1, which specifically comprises: a plurality of through holes 31 arranged in an array are formed on the second layer 3, the through holes 31 on the second layer 3 are filled with glue when the first layer 2 is stacked with the second layer 3; and the second layer 3 is tightly pressed between adjacent first layers 2. That is, the first layer 2 and the second layer 3 are sequentially and spaced stacked, and the glue used when stacking fills the through holes 31 of the second layer 3.

[0056] In the embodiment, the first conductive channels 121 are distributed in a dot shape on the conductive strip 12, and when cutting the array element, the array element signal can be separately led out without cutting through the conductive strip 12, thereby reducing the risk of excessive cutting depth of the array element and the like. The through holes 31 of the second layer 3 are made by laser cutting, stamping and the like. The through holes 31 on the second layer 3 are arranged in a row, which can avoid the disconnection or deformation of the connection between the first layer 2 and the second layer 3 caused by the too long through holes 31, thereby avoiding the low yield of the conductive strip 12. The number of the through holes 31 is not limited further in the application. Preferably, the through holes 31 are three rows, which can effectively improve the yield of the conductive strip 12.

[0057] S102, cutting the conductive block 1 along the stacking direction of the first layer 2 and the second layer 3 into a plurality of conductive pieces 11 spaced along the length direction of the conductive block 1.

[0058] In the embodiment, the conductive block 1 is cut along the stacking direction of the first layer 2 and the second layer 3 into a plurality of conductive pieces 11 spaced along the length direction of the conductive block 1, and the stacking direction of the first layer 2 and the second layer 3 is the thickness direction of the conductive block 1, and after cutting, the plurality of conductive pieces 11 are spaced along the length direction of the conductive block 1.

[0059] It is worth noting that when the first conductive channels 121 are distributed in a dot shape on the conductive strip 12, the cutting position of the conductive block 1 needs to be located in the middle of the through hole 31, that is, the cutting line of the conductive block 1 needs to pass through the through hole 31, so that the second layer 3 on the conductive piece 11 can form a dot-shaped first conductive channel 121. When the first conductive channel 121 is in a strip shape, it only needs to be cut along the thickness direction of the conductive block 1.

[0060] S103 cuts the conductive sheet 11 along the stacking direction of the first sheet layer 2 and the second sheet layer 3 into a plurality of conductive strips 12 arranged along the width direction of the conductive block 1, and the second sheet layer 3 forms at least one first conductive channel 121 on the conductive strip 12. In this embodiment, the conductive strip 12 is provided with at least one first conductive channel 121, which not only has better conductivity, but also can be used for heat conduction to improve the heat conduction efficiency of the product. In this embodiment, the plurality of conductive strips 12 after cutting are arranged along the width direction of the conductive block 1, i.e. the cutting direction of the conductive block 1 and the conductive sheet 11 are perpendicular to each other. It is worth noting that the conductive block 1 can also be cut along the stacking direction of the first sheet layer 2 and the second sheet layer 3 into a plurality of conductive sheets 11 arranged along the width direction of the conductive block 1, and then the conductive sheet 11 is cut along the stacking direction of the first sheet layer 2 and the second sheet layer 3 into a plurality of conductive strips 12 arranged along the length direction of the conductive block 1, as long as the cutting direction of the conductive sheet 11 is also perpendicular to the cutting direction of the conductive block 1, so that the second sheet layer 3 in the conductive strip 12 after cutting can form the first conductive channel 121 penetrating through the first sheet layer 2. The conductive sheet 11 with long-stripe distribution of the first conductive channel 121 is cut into a plurality of conductive strips 12 according to the number of the first conductive channel 121, the size of the conductive material and other design parameters. The conductive sheet 11 with point-like distribution of the first conductive channel 121 is divided into a plurality of conductive strips 12 according to the number of the first conductive channel 121, the size of the conductive material and other design parameters.

[0061] S104 can also be provided with a lead-out layer 122 under the conductive strip 12. In this embodiment, the lead-out layer 122 can also be provided under the conductive strip 12, which can change the conduction direction of the conductive strip 12 to meet the design requirements of various projects, and is fast and simple to operate with low cost. Referring to Figures 9 to 11 , specifically, the lead-out layer 122 provided under the conductive strip 12 specifically includes: according to the need of electrode lead-out, a third sheet layer 4 made of conductive material is provided under the first conductive channel 121 of the conductive strip 12, the third sheet layer 4 is suitable for leading out from the side of the conductive strip 12; a fourth sheet layer 5 made of a specific acoustic material is pasted under the third sheet layer 4, so that the third sheet layer 4 is arranged between the conductive strip 12 and the fourth sheet layer 5 and forms a second conductive channel 123.

[0062] In the embodiment, the conductive strip 12 is provided with a plurality of first conductive channels 121 to ensure the conductivity and reliability of the upper and lower surfaces of the conductive strip 12, and is provided with a second conductive channel 123 to timely adjust the conductivity direction of the conductive strip 12. The lead-out layer 122 is mainly prepared for the long strip-shaped conductive strip 12 after the first sheet layer 2 and the second sheet layer 3 are stacked and cut. The first conductive channel 121 of the conductive strip 12 is linear, which can change the conductivity direction of the conductive strip 12 through the lead-out layer 122, that is, change the conductivity direction of the first conductive channel 121. If the first conductive channel 121 has changed the longitudinal section of the second sheet layer 3 according to the conductivity direction, the first conductive channel 121 is non-linear, and the first conductive channel side is led out, so the lead-out layer 122 does not need to be set. Of course, the conductivity number of the second conductive channel 123 and the first conductive channel 121 is not limited further in the application. Reference Figure 9 , the third sheet layer 4 and the fourth sheet layer 5 are sequentially arranged below the conductive strip 12, the third sheet layer 4 connects three first conductive channels 121 and leads out on both sides of the conductive strip 12, and the third sheet layer 4 forms a second conductive channel 123, so that the conductivity direction of the conductive strip 12 is led out to the side of the conductive strip 12. Reference Figure 10 , the third sheet layer 4 connects the first conductive channels 121 on the left and right sides of the conductive strip 12. Reference Figure 11 , the third sheet layer 4 connects the first conductive channels 121 on any one side of the conductive strip 12.

[0063] S105 thins both sides of the conductive sheet 11 and / or the conductive strip 12, so that the conductive strip 12 meets the design size.

[0064] In the embodiment, the both sides of the conductive sheet 11 and / or the conductive strip 12 are thinned, so that the thickness, length and width of the conductive strip 12 meet the design size. It is worth noting that the conductive sheet 11 can be thinned and then cut into the conductive strip 12, or the conductive strip 12 after cutting can be thinned.

[0065] It is worth noting that the surface of the conductive strip 12 on both sides can also be gold plated. Of course, the thinning operation can also be carried out by cutting, etching, grinding, wet etching, plasma dry chemical etching, etc., which will not be described further herein.

[0066] Further, referring to Figures 9 to 11 , the application provides an electrode lead-out material, which comprises a first sheet layer 2 and a second sheet layer 3, a plurality of second sheet layers 3 are arranged between a plurality of first sheet layers 2, and the second sheet layer 3 connects the upper and lower ends of the first sheet layer 2 and forms a plurality of first conductive channels 121 on the first sheet layer 2.

[0067] In the embodiment, the second sheet layers 3 are arranged between the first sheet layers 2, so that the second sheet layers 3 form the first conductive channels 121 on the first sheet layers 2, and the second sheet layers 3 conductively connect the upper and lower ends of the first sheet layers 2, thereby ensuring the conductivity and reliability of the upper and lower surfaces of the first sheet layers 2.

[0068] Specifically, the first conductive channels 121 are distributed in a strip shape or a dot shape on the conductive strip 12. Preferably, the longitudinal section of the first conductive channels 121 is any one of a rectangle, a convex shape, or an L shape. The shape of the first conductive channels 121 can be selected according to the conductive direction of the electrode lead-out material, and changing the shape of the first conductive channels 121 only needs to set the longitudinal section of the second sheet layer 3 to a corresponding shape, so that the lead-out position of the first conductive channels 121 can be directly changed in the process of preparing the electrode lead-out material, which is simple to operate.

[0069] Specifically, the first conductive channels 121 in a rectangular shape refer to two ends of the first conductive channels 121 having the same size; the first conductive channels 121 in a convex shape refer to two ends of the first conductive channels 121 having different sizes; and the first conductive channels 121 in an L shape refer to the bottom end of the first conductive channels 121 being perpendicular to the top end. All of them can be adjusted by the longitudinal section of the second sheet layer 3.

[0070] Further, referring to Figure 9 and Figure 10 The electrode lead-out material further comprises a lead-out layer 122, the lead-out layer 122 is arranged below the first conductive channels 121 of the conductive strip 12, and a second conductive channel 123 is arranged between the lead-out layer 122 and the first sheet layer 2, and the second conductive channel 123 is connected to the first conductive channels 121. In the embodiment, the lead-out layer 122 can change the lead-out position of the first conductive channels 121 of the first sheet layer 2, so that the conductive direction can be adjusted in time according to actual needs, and the electrode lead-out material has a wider application range. The first conductive channels 121 vertically penetrate the first sheet layer 2, and the second conductive channel 123 is arranged in parallel with the first sheet layer 2, that is, the second conductive channel 123 is arranged perpendicularly to the first conductive channels 121, and the second conductive channel 123 selectively connects the first conductive channels 121.

[0071] So that the electrode lead-out material can be led out from the side.

[0072] Further, referring to Figure 12 The application provides an ultrasonic transducer, which comprises the electrode lead-out material, the piezoelectric material 6, and the circuit board 7 in any one of the above embodiments, and the electrode lead-out material conductively connects the piezoelectric material 6 and the circuit board 7.

[0073] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred embodiments of the present application, and it should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A method of manufacturing an electrode lead-out material, characterized by, The method comprises the following steps: a plurality of first layers made of a specific acoustic performance material and a plurality of second layers made of a conductive material are sequentially and spacedly stacked to form a conductive block; the conductive block is cut along the stacking direction of the first layers and the second layers into a plurality of conductive pieces arranged along the length direction of the conductive block; the conductive pieces are further cut along the stacking direction of the first layers and the second layers into a plurality of conductive strips arranged along the width direction of the conductive block, and the second layers form at least one first conductive channel on the conductive strips, and the first conductive channel penetrates the upper and lower surfaces of the conductive strips.

2. The method of claim 1, wherein the electrode lead-out material is made of a material having a high thermal conductivity and a high electrical conductivity. The method of manufacturing the electrode lead-out material comprises the following steps: according to the cross-sectional requirements of the first conductive channel, the longitudinal cross section of the second layer is set to a corresponding shape; the longitudinal cross section of the first layer is matched with the longitudinal cross section of the second layer; a plurality of the first layers and a plurality of the second layers are sequentially and spacedly stacked, so that the second layers are tightly pressed between adjacent first layers.

3. The method of claim 1, wherein the electrode lead-out material is made of a material having a high thermal conductivity. The method of manufacturing the electrode lead-out material comprises the following steps: a plurality of through holes arranged in an array are formed on the second layer, and the through holes on the second layer are filled with glue when the first layers and the second layers are stacked; the second layers are tightly pressed between adjacent first layers.

4. The method of claim 1, wherein the electrode lead material is made by, The method further comprises the following steps: a third layer made of a conductive material is arranged below the first conductive channel of the conductive strip according to the needs of electrode lead-out, and the third layer is suitable for lead-out from the side surface of the conductive strip; a fourth layer made of a specific acoustic performance material is pasted below the third layer, so that the third layer is arranged between the conductive strip and the fourth layer and forms a second conductive channel.

5. The method of manufacturing the electrode lead-out material according to claim 1, wherein: the double sides of the conductive pieces and / or the conductive strips are thinned, so that the conductive strips meet the design size.

6. An electrode lead-through material produced by the method according to any one of claims 1 to 5, characterized in that The electrode lead-out material comprises first layers and second layers, a plurality of the second layers are arranged between a plurality of the first layers, and the second layers penetrate and connect the upper and lower ends of the first layers and form a plurality of first conductive channels on the first layers.

7. The electrode lead-out material according to claim 6, wherein: the first conductive channels are distributed in a long strip shape or a dot shape on the conductive strips.

8. The electrode lead-out material according to claim 6, wherein: the longitudinal cross section of the first conductive channel is any one of a rectangle, a convex shape, and an L shape.

9. The electrode lead-out material according to claim 7, further comprising a lead-out layer, the lead-out layer is arranged below the first conductive channels of the first layers, and a second conductive channel is arranged between the lead-out layer and the first layers, and the second conductive channel connects a plurality of the first conductive channels. ​ 10. An ultrasonic transducer, characterized by, An electrode lead-out material, a piezoelectric material, and a wiring board according to any one of claims 6 to 9, wherein the electrode lead-out material electrically connects the piezoelectric material and the wiring board.

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