Ultrasonic device and ultrasonic imaging apparatus

Abstract

The invention provides an ultrasonic device and an ultrasonic imaging device, and relates to the technical field of ultrasound, the ultrasonic device is used for forming an ultrasonic sound field, and the ultrasonic device comprises a substrate, a plurality of first sound production devices and a plurality of second sound production devices, the substrate comprises a first area, in at least part of the first area, the plurality of first sound production devices are located at the vertex positions of a first virtual polygon, and the plurality of second sound production devices are located at the vertex positions of a second virtual polygon; the geometric center of the first virtual polygon and the geometric center of the second virtual polygon are overlapped, in at least part of the first area, the outer contours of the first virtual polygon and the second virtual polygon are arranged in the first direction, and the first direction is the direction from the center of the substrate to the edge. According to the ultrasonic device, the area of a formed sound field can be remarkably enlarged, and the intensity of the sound field is considered.

Description

Technical Field

[0001] The present application relates to the field of ultrasonic technology, and in particular to an ultrasonic device and an ultrasonic imaging device. Background Art

[0002] As ultrasonic devices are increasingly used in medical imaging, gesture recognition, localized sound, fingerprint detection, and mid-air touch, people's demands for ultrasound are becoming more diverse, requiring different frequencies for different applications and different sizes of sound fields for different environments.

[0003] In addition, in the related art, it is difficult for ultrasonic devices to take into account both the area of ​​the sound field formed and the intensity of the sound field during application, which seriously restricts the detection performance and application flexibility of the ultrasonic devices. Summary of the invention

[0004] The present application provides an ultrasonic device and an ultrasonic imaging device, wherein the ultrasonic device can significantly expand the area of ​​a formed sound field while taking into account the intensity of the sound field.

[0005] The embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides an ultrasonic device for forming an ultrasonic sound field, wherein the ultrasonic device comprises a substrate and a plurality of first sound-generating devices and a plurality of second sound-generating devices embedded in the substrate;

[0007] The substrate comprises a first region, in at least a portion of the first region, a plurality of the first sound emitting devices are located at vertices of a first virtual polygon, and a plurality of the second sound emitting devices are located at vertices of a second virtual polygon;

[0008] The geometric centers of the first virtual polygon and the second virtual polygon overlap, and in at least part of the first area, the outer contours of the first virtual polygon and the second virtual polygon are arranged along a first direction, which is a direction from the center of the substrate to the edge.

[0009] In some ultrasonic devices provided in the embodiments of the present application, the first sound-emitting device is a positioning sound source, and the second sound-emitting device is a detection sound source; the detection distance of the detection sound source is greater than the detection distance of the positioning sound source, and the sound wave coverage area of ​​a single positioning sound source is greater than the sound wave coverage area of ​​a single detection sound source.

[0010] In some ultrasonic devices provided in the embodiments of the present application, the substrate further includes a second region, and the second region surrounds the first region;

[0011] A plurality of the positioning sound sources are arranged in the second area; and in the first area, the plurality of detection sound sources are arranged in an array.

[0012] In some ultrasonic devices provided by embodiments of the present application, the second virtual polygon includes a first virtual quadrilateral, a third virtual quadrilateral and a fifth virtual quadrilateral, and the first virtual polygon includes a second virtual quadrilateral and a fourth virtual quadrilateral; the geometric centers of the first virtual quadrilateral, the second virtual quadrilateral, the third virtual quadrilateral, the fourth virtual quadrilateral and the fifth virtual quadrilateral overlap, and the outer contours are arranged in sequence along the first direction;

[0013] The positioning sound source is arranged at the geometric center of the first virtual quadrilateral, the detection sound sources are arranged at the vertex positions of the first virtual quadrilateral, the third virtual quadrilateral and the fifth virtual quadrilateral, and the positioning sound sources are arranged at the vertex positions of the second virtual quadrilateral and the fourth virtual quadrilateral;

[0014] The detection sound source is also arranged on a side of at least one of the first virtual quadrilateral, the third virtual quadrilateral and the fifth virtual quadrilateral.

[0015] In some ultrasonic devices provided in the embodiments of the present application, four detection sound sources are evenly arranged on any side of the third virtual quadrilateral, three positioning sound sources are evenly arranged on any side of the fourth virtual quadrilateral, and six detection sound sources are evenly arranged on any side of the fifth virtual quadrilateral;

[0016] Wherein, along the extension direction of the side of the first virtual quadrilateral, the distance between any two adjacent detection sound sources is equal.

[0017] In some ultrasonic devices provided by embodiments of the present application, a first virtual line segment, a second virtual line segment, a third virtual line segment and a fourth virtual line segment are arranged in the second region; the first virtual line segment and the second virtual line segment are arranged symmetrically, and the third virtual line segment and the fourth virtual line segment are arranged symmetrically;

[0018] Among them, the first virtual line segment and the second virtual line segment are both straight line segments, the third virtual line segment and the fourth virtual line segment are both broken line segments, five of the positioning sound sources are evenly arranged on the first virtual line segment and the second virtual line segment, and five of the positioning sound sources are evenly arranged on the third virtual line segment and the fourth virtual line segment, respectively. In the third virtual line segment and the fourth virtual line segment, the five positioning sound sources are respectively arranged at the two end points and the bending point of the broken line segment.

[0019] In some ultrasonic devices provided by embodiments of the present application, the first virtual polygon includes a first virtual quadrilateral and a third virtual quadrilateral, the second virtual polygon includes a second virtual quadrilateral and a fourth virtual quadrilateral, the geometric centers of the first virtual quadrilateral, the second virtual quadrilateral, the third virtual quadrilateral and the fourth virtual quadrilateral overlap, and the outer contours are arranged in sequence along the first direction;

[0020] The detection sound source is arranged at the geometric center of the first virtual quadrilateral, the positioning sound source is arranged at the vertex positions of the first virtual quadrilateral and the third virtual quadrilateral respectively, and the detection sound source is arranged at the vertex positions of the second virtual quadrilateral and the fourth virtual quadrilateral respectively;

[0021] Among them, the detection sound sources are respectively arranged at the midpoints of each side of the second virtual quadrilateral, the positioning sound sources are respectively arranged at the midpoints of each side of the third virtual quadrilateral, and five detection sound sources are evenly arranged on any side of the fourth virtual quadrilateral.

[0022] In some ultrasonic devices provided in embodiments of the present application, a fifth virtual quadrilateral is arranged in the second region, and five of the localization sound sources are evenly arranged on any side of the fifth virtual quadrilateral.

[0023] In some ultrasonic devices provided by embodiments of the present application, the first virtual polygon includes a first virtual hexagon and a third virtual dodecagon, the second virtual polygon includes a second virtual hexagon and a fourth virtual dodecagon, the geometric centers of the first virtual hexagon, the second virtual hexagon, the third virtual dodecagon and the fourth virtual dodecagon overlap, and the outer contours are arranged in sequence along the first direction;

[0024] The detection sound source is arranged at the geometric center of the first virtual hexagon, the positioning sound sources are arranged at the vertex positions of the first virtual hexagon and the third virtual dodecagon, and the detection sound sources are arranged at the vertex positions of the second virtual hexagon and the fourth virtual dodecagon.

[0025] In some ultrasonic devices provided by embodiments of the present application, the first virtual polygon further includes the fifth virtual dodecagon, and the outer contour of the fifth virtual dodecagon is located on a side of the outer contour of the fourth virtual dodecagon away from the outer contour of the first virtual hexagon;

[0026] The positioning sound sources are respectively arranged at the vertex positions of the fifth virtual dodecagon.

[0027] In some ultrasonic devices provided in embodiments of the present application, on any diagonal line of the fourth virtual dodecagon, the total number of the detection sound sources and the positioning sound sources is seven.

[0028] In some ultrasonic devices provided by embodiments of the present application, the first virtual polygon includes a first virtual hexagon, a fourth virtual dodecagon, and a fifth virtual dodecagon, the second virtual polygon includes a second virtual hexagon and a third virtual hexagon, the geometric centers of the first virtual hexagon, the second virtual hexagon, the third virtual hexagon, the fourth virtual dodecagon, and the fifth virtual dodecagon overlap, and their outer contours are arranged in sequence along the first direction;

[0029] The detection sound source is arranged at the center of the first virtual hexagon, the positioning sound sources are arranged at the vertex positions of the first virtual hexagon, the fourth virtual dodecagon and the fifth virtual dodecagon, and the detection sound sources are arranged at the vertex positions of the second virtual hexagon and the third virtual hexagon.

[0030] In some ultrasonic devices provided in embodiments of the present application, the orthographic projection of the localized sound source at the vertex position of the first virtual hexagon on the substrate overlaps with the orthographic projection of the side of the second virtual hexagon on the substrate.

[0031] In some ultrasonic devices provided in the embodiments of the present application, the first sound emitting devices are the same, and the azimuth angles of the first sound emitting devices are the same; the second sound emitting devices are the same, and the azimuth angles of the second sound emitting devices are the same.

[0032] In some ultrasonic devices provided by embodiments of the present application, the first sound-emitting device and the second sound-emitting device each include a first electrode, a piezoelectric layer, a second electrode, a matching layer, and a lens layer sequentially arranged in a direction away from the substrate;

[0033] The ultrasonic device includes a waterproof layer, which covers the side surfaces of each of the first sound-emitting devices, the side surfaces of the second sound-emitting devices, and the area between two adjacent sound-emitting devices; the waterproof layer includes a plurality of openings, and the outer contours of the openings overlap with the orthographic projection of the outer contour of the lens layer on the substrate.

[0034] In some ultrasonic devices provided in the embodiments of the present application, the ultrasonic device comprises a plurality of first connecting wires and a plurality of second connecting wires; the plurality of first connecting wires and the plurality of second connecting wires are both arranged on a side of the substrate away from the first sound-generating device;

[0035] The substrate comprises a plurality of through holes, the orthographic projections of the outer contours of some of the through holes on the substrate overlap with the orthographic projections of the first sound-emitting device on the substrate, and the orthographic projections of the outer contours of some of the through holes on the substrate overlap with the orthographic projections of the second sound-emitting device on the substrate;

[0036] The first sound-emitting device is electrically connected to the first connecting wire through the through hole, the second sound-emitting device is electrically connected to the second connecting wire through the through hole, the plurality of first connecting wires are connected together on one side of the substrate, and the plurality of second connecting wires are connected together on the other side of the substrate.

[0037] In a second aspect, an embodiment of the present application provides an ultrasonic imaging device, comprising an ultrasonic device as described in any one of the first aspects.

[0038] The embodiments of the present application provide an ultrasonic device and an ultrasonic imaging device. The ultrasonic device is used to form an ultrasonic sound field, and the ultrasonic device includes a substrate and a plurality of first sound-emitting devices and a plurality of second sound-emitting devices embedded in the substrate; the substrate includes a first area, and in at least part of the first area, the plurality of first sound-emitting devices are located at the vertices of a first virtual polygon, and the plurality of second sound-emitting devices are located at the vertices of a second virtual polygon; the geometric centers of the first virtual polygon and the second virtual polygon overlap, and in at least part of the first area, the outer contours of the first virtual polygon and the second virtual polygon are alternately arranged along a first direction, and the first direction is the direction from the center of the substrate to the edge.

[0039] In the ultrasonic device provided in the embodiment of the present application, a plurality of first sound-emitting devices and a plurality of second sound-emitting devices are embedded in a substrate, the plurality of first sound-emitting devices are located at the vertex positions of a first virtual polygon, and the plurality of second sound-emitting devices are located at the vertex positions of a second virtual polygon; the geometric centers of the first virtual polygon and the second virtual polygon overlap, and in at least part of the first area, the outer contours of the first virtual polygon and the second virtual polygon are arranged along a first direction; in this way, by arranging two types of sound-emitting devices on the same substrate, and both types of sound-emitting devices are arranged on the substrate according to a certain rule, the area of ​​the sound field formed by the ultrasonic device can be greatly increased, so that the ultrasonic device can be flexibly applied to detection objects of different sizes; in addition, since the number of both types of sound-emitting devices is multiple, while taking into account the area of ​​the sound field formed, the intensity of the sound field formed can also be increased, thereby improving the detection accuracy of the ultrasonic device.

[0040] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 to Figure 5 Schematic diagram of top view of five ultrasonic devices provided in the embodiments of the present application;

[0043] Figure 6 A schematic diagram of the structure of the localization sound source provided in an embodiment of the present application;

[0044] Figure 7 A schematic diagram of the structure of the detection sound source provided in the embodiment of the present application;

[0045] Figure 8 The middle figure (A) provides a schematic diagram of the acoustic wave coverage of the acoustic field of an ultrasonic device on the XOZ plane when no lens layer is provided; Figure 8 The middle (B) figure provides a schematic diagram of the acoustic wave coverage of the acoustic field of an ultrasonic device in the XOZ plane when a lens layer is provided;

[0046] Fig. 9 A schematic diagram of a cross-sectional structure of an ultrasonic device provided in an embodiment of the present application;

[0047] Fig.10 (A) to (C) provide schematic diagrams of three structures in which the detection sound source is embedded and fixed between the substrate;

[0048] Fig.11 A schematic diagram of back wiring of an ultrasonic device provided in an embodiment of the present application;

[0049] Fig.12 and Fig.13 Schematic diagram of the cross-sectional structure of two substrates provided in the embodiments of the present application. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present application. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0052] In the embodiments of the present application, words such as "first" and "second" are used to indicate parts of identical or similar items having substantially the same functions and effects. This is only for the purpose of clearly describing the technical solutions of the embodiments of the present application and shall not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0053] The features such as "parallel", "perpendicular" and "same" used in the embodiments of the present application include the features such as "parallel", "perpendicular", "same" in the strict sense, as well as the cases where "approximately parallel", "approximately perpendicular", "approximately the same" and the like contain certain errors, taking into account the errors associated with the measurement of the specific quantity (e.g., the limitations of the measurement system), and are expressed within the acceptable deviation range for the specific value determined by ordinary technicians in the field. For example, "approximately" can mean within one or more standard deviations, or within 10% or 5% of the value. "At least one" means one or more, and "a plurality" means at least two.

[0054] The "same layer" in the embodiments of the present application refers to the relationship between multiple film layers formed by the same material after the same step (e.g., a one-step patterning process). The "same layer" here does not always mean that the thickness of multiple film layers is the same or the height of multiple film layers in the cross-sectional view is the same. The polygons in this specification are not strictly defined, and can be approximate triangles, parallelograms, trapezoids, pentagons or hexagons, etc., and there may be some small deformations caused by tolerances.

[0055] In this specification, "electrically connected" and "coupled" include the situation where the components are connected together through an element having some electrical function. There is no particular limitation on the "element having some electrical function" as long as it can transmit and receive electrical signals between the connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements having various functions.

[0056] The embodiment of the present application provides an ultrasonic device for forming an ultrasonic sound field, such as Figure 1 and Figure 2 As shown, the ultrasonic device includes a substrate 100 and a plurality of first sound-generating devices 1 and a plurality of second sound-generating devices 2 embedded in the substrate 100;

[0057] The substrate 100 includes a first area A, in at least a portion of the first area A, a plurality of first sound emitting devices 1 are located at the vertices of a first virtual polygon, and a plurality of second sound emitting devices 2 are located at the vertices of a second virtual polygon;

[0058] For example, Figure 1 As shown, the geometric centers of the first virtual polygon X1 and the second virtual polygon X2 overlap, and in at least a portion of the first area A, the outer contours of the first virtual polygon X1 and the second virtual polygon X2 are arranged along a first direction, and the first direction is the direction from the center of the substrate to the edge. For example, the first direction is Figure 1 The direction indicated by the arrow.

[0059] Exemplarily, the substrate 100 may be a lightweight substrate, such as a resin substrate or a plastic insulating substrate.

[0060] The above “embedded” means that the sound device is embedded in the substrate 100. For example, a plurality of grooves are formed in the substrate 100, and a plurality of first sound devices 1 and a plurality of second sound devices 2 are respectively embedded in the grooves and fixed together with the substrate 100 through a connecting structure.

[0061] Fig. 9 A schematic cross-sectional structure diagram of a plurality of second sound-emitting devices embedded in the substrate 100 is provided.

[0062] in, Figure 1 The arrow in the middle shows one situation of the first direction and does not represent a limitation on the first direction.

[0063] For example, in Figure 1 In the embodiment, the first virtual polygon and the second virtual polygon may both be quadrilaterals.

[0064] Exemplarily, the first virtual polygon and the second virtual polygon may also be a pentagon, a hexagon, an octagon, a dodecagon, etc.

[0065] It should be noted that in the embodiments of the present application, concepts such as “virtual polygon”, “virtual quadrilateral”, “virtual hexagon” and “virtual dodecagon” do not actually exist in the ultrasonic device. They are concepts proposed only to facilitate the description of the arrangement positions of the first sound-emitting device 1 and the second sound-emitting device 2. Similar concepts have the same meaning in the following text and will not be repeated.

[0066] Among them, since multiple first sound-emitting devices 1 are located at the vertex positions of the first virtual polygon, multiple second sound-emitting devices 2 are located at the vertex positions of the second virtual polygon, and the outer contours of the first virtual polygon X1 and the second virtual polygon X2 are alternately arranged along the first direction, it can be understood that in at least part of the first area A, multiple first sound-emitting devices 1 are arranged in a ring, multiple second sound-emitting devices 2 are also arranged in a ring, and multiple rings are alternately arranged, that is, multiple first sound-emitting devices 1 and multiple second sound-emitting devices 2 are distributed in concentric rings.

[0067] exist Figure 1 and Figure 2 In the figure, a first region A and a second region B are divided by a thick solid line. The first region A is within the region enclosed by the thick solid line, and the second region B is outside the region enclosed by the thick solid line.

[0068] In the ultrasonic device provided in the embodiment of the present application, a plurality of first sound-emitting devices and a plurality of second sound-emitting devices are embedded in a substrate, the plurality of first sound-emitting devices are located at the vertex positions of a first virtual polygon, and the plurality of second sound-emitting devices are located at the vertex positions of a second virtual polygon; the geometric centers of the first virtual polygon and the second virtual polygon overlap, and in at least part of the first area, the outer contours of the first virtual polygon and the second virtual polygon are arranged along a first direction; in this way, by arranging two types of sound-emitting devices on the same substrate, and both types of sound-emitting devices are arranged on the substrate according to a certain rule, the area of ​​the sound field formed by the ultrasonic device can be greatly increased, so that the ultrasonic device can be flexibly applied to detection objects of different sizes; in addition, since the number of both types of sound-emitting devices is multiple, while taking into account the area of ​​the sound field formed, the intensity of the sound field formed can also be increased, thereby improving the detection accuracy of the ultrasonic device.

[0069] In some ultrasonic devices provided in the embodiments of the present application, the first sound-emitting device 1 is a positioning sound source, and the second sound-emitting device 2 is a detection sound source; the detection distance of the detection sound source is greater than the detection distance of the positioning sound source, and the sound wave coverage area of ​​a single positioning sound source is greater than the sound wave coverage area of ​​a single detection sound source.

[0070] It should be noted that, in the following text, for the sake of easy distinction, the positioning sound source is marked as 1 and the detection sound source is marked as 2.

[0071] Exemplarily, the detection distance of the localization sound source is less than or equal to 30 mm; taking the sound wave coverage area as a circle as an example, when the sound pressure at the edge of the circle drops to half of the maximum sound pressure in the middle area, for example, when the sound pressure drops to -6 dB, the diameter of the sound wave coverage area of ​​the sound field formed by a single localization sound source is about 20 mm, for example, 20 mm ± 3 mm.

[0072] Exemplarily, the detection distance of the detected sound source is less than or equal to 150mm; taking the sound wave coverage area as a circle as an example, when the sound pressure at the edge of the circle drops to half of the maximum sound pressure in the middle area, for example, when the sound pressure drops to -6dB, the diameter of the sound wave coverage area of ​​the sound field formed by a single positioning sound source is about 12mm, for example, 12mm±3mm.

[0073] Among them, the positioning sound source must have a larger sound field range, its ultrasonic frequency f1 ranges from 0.1 to 2 MHz, and the plane size range of the positioning sound source itself is 1 mm to 6 mm; when the plane figure of the positioning sound source itself is a circle, its diameter ranges from 1 mm to 6 mm.

[0074] Among them, the detection sound source must have a larger sound field range and stronger sound field intensity, its ultrasonic frequency f2 range is 2 to 8 MHz, and the plane size range of the detection sound source itself is 4 mm to 10 mm; when the plane figure of the detection sound source itself is a circle, its diameter range is 4 mm to 10 mm.

[0075] In the embodiments of the present application, by simultaneously setting a detection sound source and a positioning sound source, since the detection sound source and the positioning sound source respectively have different ranges of detection distances, different sound wave coverage areas, and different frequency ranges; when the ultrasonic device of the present application is applied to the detection object, the area of ​​the sound field formed by the ultrasonic device can be greatly increased, so that the ultrasonic device can be flexibly applied to detection objects of different sizes; in addition, while taking into account the area of ​​the formed sound field, the intensity of the formed sound field can be increased, and the frequency range of the sound waves emitted by the ultrasonic device can be expanded, thereby improving the detection accuracy and detection range of the ultrasonic device.

[0076] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 1 and Figure 2 As shown, the substrate 100 further includes a second region B, and the second region B surrounds the first region A;

[0077] A plurality of positioning sound sources 1 are arranged in the second area B; and a plurality of detection sound sources 2 are arranged in an array in the first area A.

[0078] For example, in Figure 1 and Figure 2 In the first area A, a plurality of detection sound sources 2 are arranged in a square array.

[0079] in, Figure 1 The number of detection sound sources 2 in each row or column in the square array is n2, for example, n2=6.

[0080] In practical applications, the value of n2 can be determined according to practical application requirements, for example, according to the detection area in the detection object and the sound wave coverage area of ​​a single detection sound source.

[0081] Taking the detection surface as a square and the sound wave coverage surface of a single detection sound source 2 as a circle as an example, the side length of the detection surface is Nb, and the radius of the sound wave coverage surface of a single detection sound source 2 is Rb;

[0082] At this time, n2≥Nb / (2*Rb).

[0083] In addition, Figure 1 In the second direction or the third direction, the spacing T1 between two adjacent detection sound sources 2 can be less than or equal to the diameter 2*Rb of the sound wave coverage of a single detection sound source 2 minus the diameter 2r of the detection sound source 2 itself, and one of the second direction and the third direction is the row direction of the square array, and the other is the column direction of the square array; that is, the spacing T1≤2*Rb-2r. At this time, along the second direction or the third direction, the distance between the centers of the two adjacent detection sound sources 2 is T1+2r.

[0084] Exemplarily, along the second direction or the third direction, the distance T3 between the detection sound source at the edge of the square array and the edge of the substrate 100 is greater than the interval T1 between two adjacent detection sound sources 2 .

[0085] For example, when the planar shape of the substrate 100 is a square, the side length L of the substrate 100 may be set to: L=2T3+n2*r+(n2-1)*T1.

[0086] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 1 As shown, the second virtual polygon X2 includes the first virtual quadrilateral S1, the third virtual quadrilateral S3 and the fifth virtual quadrilateral S5, and the first virtual polygon X1 includes the second virtual quadrilateral S2 and the fourth virtual quadrilateral S4; the geometric centers of the first virtual quadrilateral S1, the second virtual quadrilateral S2, the third virtual quadrilateral S3, the fourth virtual quadrilateral S4 and the fifth virtual quadrilateral S5 overlap, and the outer contours are arranged in sequence along the first direction (the direction from the center of the substrate to the edge);

[0087] exist Figure 1In the figure, a positioning sound source 1 is arranged at the geometric center of the first virtual quadrilateral S1, a detection sound source 2 is arranged at the vertex positions of the first virtual quadrilateral S1, the third virtual quadrilateral S3 and the fifth virtual quadrilateral S5, and a positioning sound source 1 is arranged at the vertex positions of the second virtual quadrilateral S2 and the fourth virtual quadrilateral S4;

[0088] A detection sound source 2 is further arranged on the side of at least one of the first virtual quadrilateral S1 , the third virtual quadrilateral S3 and the fifth virtual quadrilateral S5 .

[0089] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 1 As shown, four detection sound sources 2 are evenly arranged on any side of the third virtual quadrilateral S3, three positioning sound sources 1 are evenly arranged on any side of the fourth virtual quadrilateral S4, and six detection sound sources 2 are evenly arranged on any side of the fifth virtual quadrilateral S5;

[0090] Among them, along the extension direction of the side of the first virtual quadrilateral S1, the distance T1 between any two adjacent detection sound sources 2 is equal.

[0091] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 1 As shown, a first virtual line segment L1, a second virtual line segment L2, a third virtual line segment L3 and a fourth virtual line segment L4 are arranged in the second area B; the first virtual line segment L1 and the second virtual line segment L2 are arranged symmetrically, and the third virtual line segment L3 and the fourth virtual line segment L4 are arranged symmetrically;

[0092] Among them, the first virtual line segment L1 and the second virtual line segment L2 are both straight line segments, the third virtual line segment L3 and the fourth virtual line segment L4 are both broken line segments, five positioning sound sources 1 are evenly arranged on the first virtual line segment L1 and the second virtual line segment L2, and five positioning sound sources 1 are evenly arranged on the third virtual line segment L3 and the fourth virtual line segment L4. In the third virtual line segment L3 and the fourth virtual line segment L4, the five positioning sound sources 1 are respectively arranged at the two end points and the bending point of the broken line segment.

[0093] In an exemplary embodiment, the sound-generating device in the first area A is mainly used for ultrasonic imaging and size detection, and the sound-generating device in the second area B can be used for imaging (but the imaging quality requirement is not high), and its more important function is to detect the size, such as detecting and calculating the curvature. Figure 1 In the figure, a positioning sound source 1 is set in the second area B, but a detection sound source 2 with a larger detection distance is not set.

[0094] In an exemplary embodiment, the localized sound source 1 on the third virtual line segment L3 and the fourth virtual line segment L4 may be used for imaging.

[0095] In an exemplary embodiment, Figure 1 As shown, the plane figures of the positioning sound source 1 and the detection sound source 2 are both circular.

[0096] In an exemplary embodiment, the average value of the minimum distances between each localization sound source 1 on the third virtual line segment L3 and the edge of the square array in the first area A (for example, the side of the fifth virtual quadrilateral S5) along the row direction is smaller than the average value of the minimum distances between each localization sound source 1 on the first virtual line segment L1 and the detection sound source 2 on the edge of the square array in the first area A (for example, the side of the fifth virtual quadrilateral S5) along the column direction.

[0097] In an exemplary embodiment, the average value of the minimum distances between each localization sound source 1 on the fourth virtual line segment L4 and the edge of the square array in the first area A (for example, the side of the fifth virtual quadrilateral S5) along the row direction is smaller than the average value of the minimum distances between each localization sound source 1 on the second virtual line segment L1 and the detection sound source 2 on the edge of the square array in the first area A (for example, the side of the fifth virtual quadrilateral S5) along the column direction.

[0098] In an embodiment of the present application, a positioning sound source 1 is set in the second area B, and five positioning sound sources 1 are evenly set on the first virtual line segment L1 and the second virtual line segment L2, respectively, and five positioning sound sources 1 are evenly set on the third virtual line segment L3 and the fourth virtual line segment L4, respectively. In the third virtual line segment L3 and the fourth virtual line segment L4, the five positioning sound sources 1 are respectively set at the two end points and the bending point of the broken line segment; in this way, the range of sound wave emission in the ultrasonic device is greatly improved, and the area covered by the sound wave is increased, so that while the imaging quality in the first area A is improved, the positioning sound source 1 in the second area B is beneficial to assisting the measurement of relevant dimensional parameters in the first area A, thereby improving the size detection accuracy of the detection object.

[0099] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 2 As shown, the first virtual polygon X1 includes a first virtual quadrilateral S1 and a third virtual quadrilateral S3, the second virtual polygon X2 includes a second virtual quadrilateral S2 and a fourth virtual quadrilateral S4, the geometric centers of the first virtual quadrilateral S1, the second virtual quadrilateral S2, the third virtual quadrilateral S3 and the fourth virtual quadrilateral S4 overlap, and the outer contours are arranged in sequence along a first direction (a direction from the center of the substrate to the edge);

[0100] exist Figure 2In the figure, a detection sound source 2 is arranged at the geometric center of the first virtual quadrilateral S1, a positioning sound source 1 is arranged at the vertex positions of the first virtual quadrilateral S1 and the third virtual quadrilateral S3, and a detection sound source 2 is arranged at the vertex positions of the second virtual quadrilateral S2 and the fourth virtual quadrilateral S4; wherein, a detection sound source 2 is arranged at the midpoint of each side of the second virtual quadrilateral S2, a positioning sound source 1 is arranged at the midpoint of each side of the third virtual quadrilateral S3, and five detection sound sources 2 are evenly arranged on any side of the fourth virtual quadrilateral S4.

[0101] In an exemplary embodiment, if Figure 2 As shown, the plane figures of the positioning sound source 1 and the detection sound source 2 are all quadrilaterals, such as squares. Among them, the azimuth angles of all the positioning sound sources 1 and the detection sound sources 2 are the same, for example, the sides of all the squares in the same direction are arranged in parallel.

[0102] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 2 As shown, a fifth virtual quadrilateral S5 is arranged in the second area B, and five localization sound sources 1 are evenly arranged on any side of the fifth virtual quadrilateral S5.

[0103] In an exemplary embodiment, the sound-generating device in the first area A is mainly used for ultrasonic imaging and size detection, and the sound-generating device in the second area B can be used for imaging (but the imaging quality requirement is not high), and its more important function is to detect the size, such as detecting and calculating the curvature. Figure 2 In the figure, a positioning sound source 1 is set in the second area B, but a detection sound source 2 with a larger detection distance is not set.

[0104] In the ultrasonic device provided in the embodiment of the present application, by setting two sound-emitting devices in the first area A and setting a positioning sound source in the second area B, while ensuring the ultrasonic imaging quality in the first area A, the positioning sound source 1 in the second area is beneficial to improving the range of sound wave emission in the ultrasonic device and increasing the area covered by the sound wave, which is beneficial to assisting the measurement of relevant dimensional parameters in the first area A, thereby improving the size detection accuracy of the detection object.

[0105] For example, the ultrasonic device may have a curved substrate 100. For example, the cross section of the substrate 100 along a direction parallel to its normal may be a concave surface (eg, Fig.12 ) or convex (as Fig.13 shown).

[0106] When the cross-section of the substrate 100 along the direction parallel to its normal is concave, the sound wave propagation path of the localized sound source 1 in the second area B is reduced, so that the propagation area of ​​the localized sound source in the second area B can be increased, and the coverage range of the sound field formed by it can be increased. In this way, in practical applications, the distribution density of the localized sound source 1 in the second area B can be reduced, thereby reducing costs.

[0107] In an exemplary embodiment, when the cross-section of the substrate 100 along a direction parallel to its normal is convex, the sound wave propagation path of the positioning sound source 1 and the detection sound source 2 in the first area A is reduced, so that the propagation area of ​​the positioning sound source 1 and the detection sound source 2 in the first area A can be increased, and the coverage range of the sound field formed thereby can be increased. Thus, in practical applications, the distribution density of the positioning sound source 1 and the detection sound source 2 in the first area BA can be reduced, thereby reducing costs.

[0108] It should be noted that in Figure 3 to Figure 5 In the present invention, since the second area B is not provided, the first area A is not particularly marked in the specification and the drawings.

[0109] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 3 and Figure 4 As shown, the first virtual polygon X1 includes a first virtual hexagon D1 and a third virtual dodecagon D3, the second virtual polygon X2 includes a second virtual hexagon D2 and a fourth virtual dodecagon D4, the geometric centers of the first virtual hexagon D1, the second virtual hexagon D2, the third virtual dodecagon D3 and the fourth virtual dodecagon D4 overlap, and the outer contours are arranged in sequence along a first direction (a direction from the center of the substrate to the edge);

[0110] exist Figure 3 and Figure 4 In the figure, a detection sound source 2 is set at the geometric center of the first virtual hexagon D1, a positioning sound source 1 is set at the vertex positions of the first virtual hexagon D1 and the third virtual dodecagon D3, and a detection sound source 2 is set at the vertex positions of the second virtual hexagon D2 and the fourth virtual dodecagon D4.

[0111] For example, Figure 4 The plane shape of the substrate 100 of the ultrasonic device shown may be a circle.

[0112] In the embodiment of the present application, the planar shape of the substrate 100 may be a polygon or an arc. The polygon may be a triangle, a quadrilateral, a pentagon, a hexagon, etc., and the arc may be a circle, a sector, an ellipse, a semicircle, a semi-ellipse, etc.

[0113] In an exemplary embodiment, Figure 4The cross section of the substrate 100 of the ultrasonic device shown in the figure in the direction parallel to its normal line can be concave, so that the propagation path of the outer circle of the detection sound source 2 can be reduced, the propagation area of ​​the detection sound source 2 can be increased, and the coverage range of the sound field formed by it can be increased. In this way, in practical applications, compared with Figure 3 The structure shown can omit the positioning sound source 1 set on the fifth virtual dodecagon.

[0114] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 3 As shown, the first virtual polygon X1 also includes a fifth virtual dodecagon D5, the outer contour of the fifth virtual dodecagon D5 is located on the side of the outer contour of the fourth virtual dodecagon D4 away from the outer contour of the first virtual hexagon D1; positioning sound sources 1 are respectively arranged at the vertex positions of the fifth virtual dodecagon D5.

[0115] In the ultrasonic device provided in the embodiment of the present application, by setting two sound-emitting devices in the area within the fourth virtual dodecagon D4 and setting a positioning sound source 1 in the area outside the fourth virtual dodecagon D4, while ensuring the ultrasonic imaging quality in the area within the fourth virtual dodecagon D4, the positioning sound source 1 on the fifth virtual dodecagon D5 is beneficial to improving the range of sound wave emission in the ultrasonic device and increasing the area covered by the sound wave, which is beneficial to the measurement of relevant dimensional parameters of the detection object (such as curvature), thereby improving the size detection accuracy of the detection object.

[0116] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 3 and Figure 4 As shown, on any diagonal line of the fourth virtual dodecagon D4, the total number of detection sound sources 2 and positioning sound sources 1 is seven.

[0117] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 5 As shown, the first virtual polygon X1 includes a first virtual hexagon D1, a fourth virtual dodecagon D4 and a fifth virtual dodecagon D5, the second virtual polygon X2 includes a second virtual hexagon D2 and a third virtual hexagon D3, the geometric centers of the first virtual hexagon D1, the second virtual hexagon D2, the third virtual hexagon D3, the fourth virtual dodecagon D4 and the fifth virtual dodecagon D5 overlap, and the outer contours are arranged in sequence along a first direction (a direction from the center of the substrate to the edge);

[0118] exist Figure 5 In the figure, a detection sound source 2 is arranged at the center of the first virtual hexagon D1, a positioning sound source 1 is arranged at the vertex positions of the first virtual hexagon D1, the fourth virtual dodecagon D4 and the fifth virtual dodecagon D5, and a detection sound source 2 is arranged at the vertex positions of the second virtual hexagon D2 and the third virtual hexagon D3.

[0119] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 5 As shown, the orthographic projection of the localization sound source 1 at the vertex position of the first virtual hexagon D1 on the substrate 100 overlaps with the orthographic projection of the side of the second virtual hexagon D2 on the substrate 100 .

[0120] In an exemplary embodiment, the minimum distance between the positioning sound source 1 at the vertex position of the first virtual hexagon D1 and the detection sound source 2 at the vertex position of the second virtual hexagon D2 is smaller than the distance from the detection sound source 2 at the vertex position of the second virtual hexagon D2 to the detection sound source 2 at the vertex position of the third virtual hexagon D3 along the first direction.

[0121] In an exemplary embodiment, the distance along the first direction from the detection sound source 2 at the vertex position of the third virtual hexagon D3 to the positioning sound source 1 at the vertex position of the fourth virtual dodecagon D4 is smaller than the distance along the first direction from the positioning sound source 1 at the vertex position of the fourth virtual dodecagon D4 to the positioning sound source 1 at the vertex position of the fifth virtual dodecagon D5.

[0122] In an exemplary embodiment, if Figure 5 As shown, the plane figures of each positioning sound source 1 and detection sound source 2 are regular hexagons, and the azimuth angles of the orthographic projections of each positioning sound source 1 on the substrate 100 are consistent, and the azimuth angles of the orthographic projections of each detection sound source 2 on the substrate 100 are consistent.

[0123] In addition, compared with sound-emitting devices whose plane figures are circles, sound-emitting devices whose plane figures are polygons are more conducive to reducing the difficulty of subsequent ultrasonic imaging stitching through algorithms during the process of using ultrasonic imaging, thereby improving the quality of ultrasonic imaging.

[0124] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 1 to Figure 5 As shown, each first sound-emitting device is the same, and the azimuth angles of each first sound-emitting device are the same; each second sound-emitting device is the same, and the azimuth angles of each second sound-emitting device are the same.

[0125] In the embodiments of the present application, by setting the azimuth angles of the same type of sound sources to be consistent, it is beneficial to reduce the difficulty of subsequent ultrasound imaging stitching through algorithms during the process of using ultrasound imaging, thereby improving the quality of ultrasound imaging.

[0126] In some ultrasonic devices provided in the embodiments of the present application, such as Figure 6 and Figure 7As shown, the first sound-generating device and the second sound-generating device each include a first electrode 11 / 21, a piezoelectric layer 12 / 22, a second electrode 13 / 23, a matching layer 14 / 24 and a lens layer 15 / 25 which are arranged in sequence;

[0127] Among them, due to the large difference in acoustic impedance between the lens layer and the piezoelectric layer, strong reflection will be generated when the sound wave directly passes through the interface. Therefore, a matching layer (one or more layers) needs to be added between the two to achieve matching between the lens layer and the piezoelectric layer and reduce reflection.

[0128] By way of example, the material of the piezoelectric layer may be lead zirconate titanate piezoelectric ceramics.

[0129] Among them, the lens layer can expand the ultrasonic sound field to meet different usage requirements.

[0130] Figure 8 The middle figure (A) provides a schematic diagram of the acoustic wave coverage of the acoustic field on the XOZ plane when the ultrasonic device is not provided with a lens layer; Figure 8 The middle (B) figure provides a schematic diagram of the acoustic wave coverage of the acoustic field on the XOZ plane when a lens layer is provided in an ultrasonic device. Figure 8 The area pointed by the arrow in Figure (A) is the ultrasonic blind area. The larger the blind area, the worse the detection performance of the ultrasonic device. Figure 8 In the middle (B) figure, the ultrasound blind spot in this area almost disappears.

[0131] like Fig. 9 As shown, the ultrasonic device includes a waterproof layer 27, which covers the side surfaces of each first sound-emitting device 1, the side surfaces of the second sound-emitting device 2, and the area between two adjacent sound-emitting devices; the waterproof layer 27 includes a plurality of openings, and the outer contours of the openings overlap with the orthographic projection of the outer contour of the lens layer 25 on the substrate 100.

[0132] In actual applications, the ultrasonic device may come into contact with water during use. For example, when a medical ultrasonic probe is used to perform ultrasonic examination on a human body, a coupling agent is used on the skin surface, so the detection sound source and the positioning sound source need to be waterproofed. By providing a waterproof layer 27, the service life of the ultrasonic device can be increased.

[0133] Exemplarily, the material of the waterproof layer 27 may be silica gel, silicone rubber, or epoxy resin.

[0134] In some embodiments, Fig. 9As shown, a protective layer 26 is also provided on the side of each detection sound source 2 and positioning sound source 1, and the protective layer 26 surrounds and wraps the side of the detection sound source 2 and the positioning sound source 1. The protective layer 26 is used to prevent other membrane layers (such as waterproof layers, fixing parts) from causing damage to the detection sound source 2 and the positioning sound source 1 during the preparation process.

[0135] For example, the material of the protection layer 26 may be metal or hard plastic.

[0136] in addition, Fig.10 In (A) to (C), three specific connection methods for the detection sound source 2 and the substrate 100 are provided. Fig.10 In (A), by providing a plurality of threads 27 on the protective layer 26, the detection sound source 2 and the substrate 100 can be fixed together through the threads; Fig.10 In (B), an adhesive layer 28 is provided in a partial area outside the protective layer 26, and the detection sound source 2 is fixed to the substrate 100 through the adhesive layer 28; Fig.10 In (C), two clamping plates 29 are provided in a partial area outside the protective layer 26, and the detection sound source 2 and the substrate 100 are fixed together by the clamping plates 29.

[0137] Among them, the fixing method of the positioning sound source 1 is the same as Fig.10 The manner in which the detection sound source 2 is embedded and fixed to the substrate 100 in (A) to (C) is the same and will not be described again.

[0138] In some ultrasonic devices provided in the embodiments of the present application, such as Fig.11 As shown, the ultrasonic device includes a plurality of first connection wires LJ1 and a plurality of second connection wires LJ2; the plurality of first connection wires LJ1 and the plurality of second connection wires LJ2 are both arranged on a side of the substrate 1 away from the first sound-generating device 1; Fig.11 In the figure, the back side of the substrate 100 is schematically shown, wherein the first sound-emitting device 1 and the second sound-emitting device 2 are both their projections on the back side of the substrate 100, which cannot be seen in actual applications.

[0139] The substrate 100 includes a plurality of through holes, and the orthographic projections of the outer contours of some of the through holes on the substrate 100 overlap with the orthographic projections of the first sound-emitting device 1 on the substrate 100, and the orthographic projections of the outer contours of some of the through holes on the substrate 100 overlap with the orthographic projections of the second sound-emitting device 2 on the substrate 100;

[0140] The first sound device 1 is electrically connected to the first connection line LJ1 through a through hole, and the second sound device 2 is electrically connected to the second connection line LJ2 through a through hole. Multiple first connection lines LJ1 are connected together on one side of the substrate 100, and multiple second connection lines LJ2 are connected together on the other side of the substrate 100.

[0141] Exemplarily, the distance between two adjacent through holes is greater than or equal to 3 mm to avoid interference between the two sound-generating components.

[0142] Compared with the current traditional planar probes with limited sound field area, the sound field intensity and the sound field area restrict each other; the phased array sound source system is complex and expensive. This application can achieve a large range of uniform sound field effects at different frequencies by designing arrangements and combinations of different sound-emitting devices, plus the design of matching layers and lens layers, thereby expanding the scope of application. In practice, the size can be flexibly adjusted to facilitate wearable applications.

[0143] An embodiment of the present application provides an ultrasonic imaging device, comprising an ultrasonic device as described in any one of the foregoing descriptions.

[0144] Exemplarily, the ultrasound imaging device may be a wearable ultrasound imaging device.

[0145] The ultrasonic imaging device provided in the embodiment of the present application has the advantages possessed by the ultrasonic device mentioned above, which will not be repeated here.

[0146] In addition, the ultrasonic imaging device provided in the embodiments of the present application also has the characteristics of good imaging quality and high detection accuracy.

[0147] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An ultrasonic device, characterized in that: Applied to form an ultrasonic sound field, the ultrasonic device comprises a substrate and a plurality of first sound-generating devices and a plurality of second sound-generating devices embedded in the substrate; The substrate comprises a first region, in at least a portion of the first region, a plurality of the first sound emitting devices are located at vertices of a first virtual polygon, and a plurality of the second sound emitting devices are located at vertices of a second virtual polygon; The geometric centers of the first virtual polygon and the second virtual polygon overlap, and in at least part of the first area, the outer contours of the first virtual polygon and the second virtual polygon are arranged along a first direction, which is a direction from the center of the substrate to the edge.

2. The ultrasonic device according to claim 1, characterized in that: The first sound-emitting device is a positioning sound source, and the second sound-emitting device is a detection sound source; the detection distance of the detection sound source is greater than the detection distance of the positioning sound source, and the sound wave coverage area of ​​a single positioning sound source is greater than the sound wave coverage area of ​​a single detection sound source.

3. The ultrasonic device according to claim 2, characterized in that: The substrate further includes a second region surrounding the first region; A plurality of the positioning sound sources are arranged in the second area; and in the first area, the plurality of detection sound sources are arranged in an array.

4. The ultrasonic device according to claim 3, characterized in that: The second virtual polygon includes a first virtual quadrilateral, a third virtual quadrilateral and a fifth virtual quadrilateral, and the first virtual polygon includes a second virtual quadrilateral and a fourth virtual quadrilateral; the geometric centers of the first virtual quadrilateral, the second virtual quadrilateral, the third virtual quadrilateral, the fourth virtual quadrilateral and the fifth virtual quadrilateral overlap, and their outer contours are arranged in sequence along the first direction; The positioning sound source is arranged at the geometric center of the first virtual quadrilateral, the detection sound sources are arranged at the vertex positions of the first virtual quadrilateral, the third virtual quadrilateral and the fifth virtual quadrilateral, and the positioning sound sources are arranged at the vertex positions of the second virtual quadrilateral and the fourth virtual quadrilateral; The detection sound source is also arranged on a side of at least one of the first virtual quadrilateral, the third virtual quadrilateral and the fifth virtual quadrilateral.

5. The ultrasonic device according to claim 4, characterized in that: Four of the detection sound sources are evenly arranged on any side of the third virtual quadrilateral, three of the positioning sound sources are evenly arranged on any side of the fourth virtual quadrilateral, and six of the detection sound sources are evenly arranged on any side of the fifth virtual quadrilateral; Wherein, along the extension direction of the side of the first virtual quadrilateral, the distance between any two adjacent detection sound sources is equal.

6. The ultrasonic device according to claim 4 or 5, characterized in that: The second area is provided with a first virtual line segment, a second virtual line segment, a third virtual line segment and a fourth virtual line segment; the first virtual line segment and the second virtual line segment are symmetrically arranged, and the third virtual line segment and the fourth virtual line segment are symmetrically arranged; Among them, the first virtual line segment and the second virtual line segment are both straight line segments, the third virtual line segment and the fourth virtual line segment are both broken line segments, five of the positioning sound sources are evenly arranged on the first virtual line segment and the second virtual line segment, and five of the positioning sound sources are evenly arranged on the third virtual line segment and the fourth virtual line segment, respectively. In the third virtual line segment and the fourth virtual line segment, the five positioning sound sources are respectively arranged at the two end points and the bending point of the broken line segment.

7. The ultrasonic device according to claim 3, characterized in that: The first virtual polygon includes a first virtual quadrilateral and a third virtual quadrilateral, the second virtual polygon includes a second virtual quadrilateral and a fourth virtual quadrilateral, the geometric centers of the first virtual quadrilateral, the second virtual quadrilateral, the third virtual quadrilateral and the fourth virtual quadrilateral overlap, and the outer contours are arranged in sequence along the first direction; The detection sound source is arranged at the geometric center of the first virtual quadrilateral, the positioning sound source is arranged at the vertex positions of the first virtual quadrilateral and the third virtual quadrilateral respectively, and the detection sound source is arranged at the vertex positions of the second virtual quadrilateral and the fourth virtual quadrilateral respectively; Among them, the detection sound sources are respectively arranged at the midpoints of each side of the second virtual quadrilateral, the positioning sound sources are respectively arranged at the midpoints of each side of the third virtual quadrilateral, and five detection sound sources are evenly arranged on any side of the fourth virtual quadrilateral.

8. The ultrasonic device according to claim 7, characterized in that: A fifth virtual quadrilateral is arranged in the second area, and five positioning sound sources are evenly arranged on any side of the fifth virtual quadrilateral.

9. The ultrasonic device according to claim 2, characterized in that: The first virtual polygon includes a first virtual hexagon and a third virtual dodecagon, the second virtual polygon includes a second virtual hexagon and a fourth virtual dodecagon, the geometric centers of the first virtual hexagon, the second virtual hexagon, the third virtual dodecagon and the fourth virtual dodecagon overlap, and the outer contours are arranged in sequence along the first direction; The detection sound source is arranged at the geometric center of the first virtual hexagon, the positioning sound sources are arranged at the vertex positions of the first virtual hexagon and the third virtual dodecagon, and the detection sound sources are arranged at the vertex positions of the second virtual hexagon and the fourth virtual dodecagon.

10. The ultrasonic device according to claim 9, characterized in that: The first virtual polygon further includes the fifth virtual dodecagon, and the outer contour of the fifth virtual dodecagon is located on a side of the outer contour of the fourth virtual dodecagon away from the outer contour of the first virtual hexagon; The positioning sound sources are respectively arranged at the vertex positions of the fifth virtual dodecagon.

11. The ultrasonic device according to claim 9 or 10, characterized in that: On any diagonal line of the fourth virtual dodecagon, the total number of the detection sound sources and the positioning sound sources is seven.

12. The ultrasonic device according to claim 2, characterized in that: The first virtual polygon includes a first virtual hexagon, a fourth virtual dodecagon and a fifth virtual dodecagon, the second virtual polygon includes a second virtual hexagon and a third virtual hexagon, the geometric centers of the first virtual hexagon, the second virtual hexagon, the third virtual hexagon, the fourth virtual dodecagon and the fifth virtual dodecagon overlap, and the outer contours are arranged in sequence along the first direction; The detection sound source is arranged at the center of the first virtual hexagon, the positioning sound sources are arranged at the vertex positions of the first virtual hexagon, the fourth virtual dodecagon and the fifth virtual dodecagon, and the detection sound sources are arranged at the vertex positions of the second virtual hexagon and the third virtual hexagon.

13. The ultrasonic device according to claim 12, characterized in that: The orthographic projection of the localized sound source at the vertex position of the first virtual hexagon on the substrate overlaps with the orthographic projection of the side of the second virtual hexagon on the substrate.

14. The ultrasonic device according to any one of claims 1 to 13, characterized in that: The first sound-emitting devices are identical to each other, and the azimuth angles of the first sound-emitting devices are identical to each other; the second sound-emitting devices are identical to each other, and the azimuth angles of the second sound-emitting devices are identical to each other.

15. The ultrasonic device according to claim 1, characterized in that: The first sound-generating device and the second sound-generating device each include a first electrode, a piezoelectric layer, a second electrode, a matching layer and a lens layer which are arranged in sequence; The ultrasonic device includes a waterproof layer, which covers the side surfaces of each of the first sound-emitting devices, the side surfaces of the second sound-emitting devices, and the area between two adjacent sound-emitting devices; the waterproof layer includes a plurality of openings, and the outer contours of the openings overlap with the orthographic projection of the outer contour of the lens layer on the substrate.

16. The ultrasonic device according to any one of claims 1 to 13 and 15, characterized in that: The ultrasonic device comprises a plurality of first connecting wires and a plurality of second connecting wires; the plurality of first connecting wires and the plurality of second connecting wires are both arranged on a side of the substrate away from the first sound-generating device; The substrate comprises a plurality of through holes, the orthographic projections of the outer contours of some of the through holes on the substrate overlap with the orthographic projections of the first sound-emitting device on the substrate, and the orthographic projections of the outer contours of some of the through holes on the substrate overlap with the orthographic projections of the second sound-emitting device on the substrate; The first sound-emitting device is electrically connected to the first connecting wire through the through hole, the second sound-emitting device is electrically connected to the second connecting wire through the through hole, the plurality of first connecting wires are connected together on one side of the substrate, and the plurality of second connecting wires are connected together on the other side of the substrate.

17. An ultrasonic imaging device, characterized in that: The ultrasonic device comprises the ultrasonic device as claimed in any one of claims 1 to 16.

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