CN216336594U - Sound production device - Google Patents

Abstract

The utility model discloses a sound production device, which comprises a base body and at least one layer of electric conductor stacked on the base body, wherein each layer of electric conductor comprises an electric conduction base body and a first electric conduction layer arranged on the electric conduction base body, the base body comprises a base layer and a second electric conduction layer arranged on the base layer, the first electric conduction layer of each layer of electric conductor is led out of the base body through an electric conduction structure, the electric conduction structure is arranged on the base body and is electrically isolated from the second electric conduction layer on the base body, and the first electric conduction layer of each layer of electric conductor is led out of the base layer through the corresponding electric conduction structure and is led out of the base layer together with the second electric conduction layer. The electrodes on the conductor are all led into the substrate, and the wires are uniformly routed on the substrate, so that the attractiveness of the final product is facilitated, and the narrower frame of the final sounding product is facilitated.

Description

Sound production device

Technical Field

The utility model relates to the technical field of screen sounding, in particular to a sounding device convenient for wiring and reducing thickness.

Background

With the development of ultra-thin, narrow-bezel, and even full-screen designs of display devices, the space left for a sound generating device in the display device is smaller and smaller. Since the volume of a typical sound generating device (e.g. a speaker) is usually large and is mostly based on the process structure of silicon-based MEMS (Micro-Electro-Mechanical systems), it is difficult to realize an integrated design with a display panel. In addition, for some special needs, it may be more desirable for the display device to have a directional sound generating device, and the directional sound generating device may be integrated with the display panel, so that the combination of directional sound generation and display technology may be realized.

At present, a directional sound production screen usually uses an electrostatic ultrasonic transducer to realize directional sound production, and the electrostatic ultrasonic transducer is a transducer which utilizes electric field force to make a vibrating diaphragm vibrate so as to produce ultrasound, and is a novel ultrasonic sound production device. An electrostatic ultrasonic transducer is also called a capacitive transducer because its positive and negative electrodes face each other. The utility model discloses an electrode lead wire on the sound production body and the base member is more, if the electrode lead wire on sound production body and the base member is drawn forth respectively, then the lead wire is more in a jumble, and can influence the pleasing to the eye of final sound production product.

Accordingly, there is a need in the art for improvements that overcome the above-mentioned deficiencies in the prior art.

The utility model has the following contents:

the utility model aims to provide a sound production device which is convenient to route and reduce the thickness.

In order to achieve the above object, the present invention provides a sound generating device, including a base and at least one layer of electric conductor stacked on the base, each layer of electric conductor includes an electric conductive base and a first electric conductive layer disposed on the electric conductive base, the base includes a base layer and a second electric conductive layer disposed on the base layer, the first electric conductive layer of each layer of electric conductor is led out to the base through an electric conductive structure, the electric conductive structure is disposed on the base and electrically isolated from the second electric conductive layer on the base, the first electric conductive layer of each layer of electric conductor is led out to the base through the corresponding electric conductive structure, and the first electric conductive layer and the second electric conductive layer are led out from the base.

In a preferred embodiment, the first conductive layer and the second conductive layer are correspondingly divided into a plurality of conductive regions, each conductive region of the first conductive layer is led into the corresponding base layer through a conductive structure, and each conductive region corresponding to the second conductive layer is led out from the base layer.

In a preferred embodiment, the first conductive layer and the second conductive layer are divided into a plurality of conductive areas, a conductive area electrically isolated from the second conductive layer is disposed on the base layer, a plurality of conductive structures are disposed in the conductive area, each conductive area of the first conductive layer is electrically connected to a corresponding conductive structure in the conductive area, and each conductive area corresponding to the second conductive layer is led out from the conductive area on the base layer.

In a preferred embodiment, all the conductive regions of the first conductive layer and all the conductive regions of the second conductive layer are led out from the same side of the base layer.

In a preferred embodiment, at least one conductive region electrically isolated from the second conductive layer is disposed on the base layer, and the conductive structure is formed on each of the conductive regions.

In a preferred embodiment, the conductive region is disposed adjacent an outer edge of the base layer.

In a preferred embodiment, the conductive structure further includes a flexible circuit board, and all conductive areas of the first conductive layer and all conductive areas of the second conductive layer are led out through the flexible circuit board.

In a preferred embodiment, the sound generating device further comprises a driving circuit, and the driving circuit is electrically connected with the flexible circuit board.

In a preferred embodiment, the sound generating device further includes an insulating layer, the insulating layer is disposed between the first conductive layer and the second conductive layer, and the insulating layer is not disposed in a region of the first conductive layer corresponding to the conductive structure.

In a preferred embodiment, the conductive structure is a conductive particle or a solder structure.

In a preferred embodiment, the conductive particles are thermally compressed on the base layer.

Compared with the prior art, the utility model has the following beneficial effects:

1. the electrodes on the multilayer electric conductors of the sounding device are all led into the base body, and the electrodes on the electric conductors and the electrodes on the base body are led out on the base body in a unified mode, so that final wiring is facilitated. And all electrodes on the substrate are led out through the flexible circuit board, so that the appearance of the final product is attractive, and the final sounding product can realize a narrower frame.

2. In addition, the utility model omits a lead structure on the electric conductor and reduces the integral thickness of the sound production product after lamination.

Description of the drawings:

FIG. 1 is a schematic view of a sound generating device according to the present invention;

FIG. 2 is a schematic view of a laminated structure of the sound generating device of the present invention;

FIG. 3 is a schematic view of a partition structure of the sound generating device of the present invention;

FIG. 4 is a schematic cross-sectional view of the sound generating device of the present invention;

FIG. 5 is a schematic structural view of the sound generating device of the present invention connected to a flexible circuit board;

FIG. 6 is a schematic view of another alternative structure of the sound generating device of the present invention connected to a flexible circuit board;

FIG. 7 is a schematic structural diagram of a flexible circuit board according to the present invention;

FIG. 8 is a schematic view of a laminated structure of a sound generating device according to another embodiment of the present invention;

fig. 9 is a schematic structural view of a sound generating device according to another embodiment of the present invention connected to a flexible circuit board.

The reference signs are:

1. the sound generating device comprises a sound generating body, 11, a sound generating base body, 12, a first conducting layer, 121, a first conducting region, 2, a base body, 21, a base layer, 211, a conducting region, 22, a second conducting layer, 3, a conducting structure, 4, a flexible circuit board, 41, a first pin, 42, a second pin, 5, an insulating layer, 6, an air gap, 7 and a touch layer.

The specific implementation mode is as follows:

the following detailed description of specific embodiments of the utility model is provided, but it should be understood that the scope of the utility model is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1 and 2, a sound generating device according to an embodiment of the present invention includes abase 2, at least one layer of electric conductor on thebase 2, and aconductive structure 3, wherein thebase 2 is provided with a layer of electric conductor, which is generally asound generating body 1. The conductingstructure 3 is used for leading the electrode on the soundingbody 1 into thebase body 2, so that the wiring is led out from thebase body 2, and the wiring is convenient.

Specifically, as shown in fig. 2 and 4, the soundingbody 1 is laminated on thebase body 2, and includes a soundingbase body 11 and a firstconductive layer 12 disposed on one surface (such as the lower surface) of the soundingbase body 11, where the soundingbase body 11 is preferably, but not limited to, a PET film.

Thesubstrate 2 specifically includes abase layer 21 and a secondconductive layer 22 disposed on a surface (e.g., upper surface) of thebase layer 21, and the secondconductive layer 22 is disposed opposite to the firstconductive layer 12, and in practice, thebase layer 21 is preferably, but not limited to, a glass base layer.

The firstconductive layer 12 on the soundingbody 1 is led out onto thebase layer 21 through theconductive structure 3. Specifically, theconductive structure 3 is disposed on thebase layer 21 and electrically isolated from the secondconductive layer 22 on thebase layer 21, and theconductive structure 3 is electrically connected to the firstconductive layer 12 on thesounding base 11 for leading out the firstconductive layer 12 onto thebase layer 21. In practice, theconductive structure 3 is preferably disposed at the edge of thebase layer 21, and may be, but is not limited to, conductive particles, and other conductive structures may also be suitable for the present invention, such as a soldering structure. The conductive particles may be formed on thebase layer 21 by, but not limited to, hot pressing. More specifically, aconductive region 211 is disposed on thebase layer 21, theconductive structure 3 is disposed in theconductive region 211, and theconductive region 211 is electrically isolated from the secondconductive layer 22 on thebase layer 21, such as an isolation region is disposed between an edge of theconductive structure 3 and an edge of theconductive region 211 to isolate theconductive structure 3 from the secondconductive layer 22.

After the firstconductive layer 12 on the soundingbody 1 is led out to thebase layer 21 through theconductive structure 3, theconductive structure 3 and the secondconductive layer 22 on thebase layer 21 are led out from thebase layer 21, and are electrically connected to an external driving circuit (not shown). The two conducting layers of the sound generating device are arranged on thebase layer 21, so that the whole body of the sound generating device and the wire can be conveniently arranged.

In addition, according to actual needs, the sound production device can be divided into multiple channels, for example, the sound production device is divided into two sound production areas, namely, two channels, and so on. Specifically, the firstconductive layer 12 on thesound emitting substrate 11 is divided into a plurality ofconductive regions 121, and for convenience of description, the conductive regions on thesound emitting substrate 11 are defined as the firstconductive regions 121, that is, only the firstconductive layer 12 is divided, and the plurality of firstconductive regions 121 share onesound emitting substrate 11. Correspondingly, the secondconductive layer 22 on thebase layer 21 is also divided into a plurality of conductive regions, and for convenience of description, the conductive regions on thebase layer 21 are defined as second conductive regions (not shown), that is, only the secondconductive layer 22 is divided, and the plurality of second conductive regions share onebase layer 21.

As shown in fig. 3, aconductive region 211 is disposed on thebase layer 21 corresponding to each second conductive region, i.e., if the secondconductive layer 22 is divided into 16 second conductive regions, the firstconductive layer 12 is also divided into 16 firstconductive regions 121. Then 16conductive regions 211 are disposed on thebase layer 21, aconductive structure 3 is formed in eachconductive region 211, and theconductive structure 3 is electrically connected to the corresponding firstconductive region 121 of the firstconductive layer 12, so that the 16 firstconductive regions 121 of the firstconductive layer 12 are all led out onto thebase layer 21 and are led out uniformly from thebase layer 21.

Preferably, as shown in fig. 3, all theconductive regions 211 on thebase layer 21 are disposed on the same side of thebase layer 21, and are disposed as close to the edge of thebase layer 21 as possible, and specifically may be uniformly distributed along one of the sides of thebase layer 21 at intervals, so that the wiring is facilitated, and the narrow frame design requirement of the sound generating device can be met. Of course, the position of theconductive region 211 on thebase layer 21 in the present invention is not limited to the above-mentioned description, but the above-mentioned solution is only one of the preferred solutions, and the position thereof can be set according to the actual requirement, for example, theconductive region 211 can also be set on both sides of the base layer.

After the firstconductive layer 12 is led out onto thebase layer 21 through theconductive structure 3, both the first conductive layer and the secondconductive layer 22 on thebase layer 21 are led out from thebase layer 21. As shown in fig. 5, all the firstconductive regions 121 of the firstconductive layer 12 and all the second conductive regions of the secondconductive layer 22 can be led out through aflexible circuit board 4, and then connected to an external driving circuit. Specifically, two pins, which are respectively defined as afirst pin 41 and asecond pin 42, are disposed at one end of theflexible circuit board 4 corresponding to eachconductive region 211, wherein thefirst pin 41 is connected to theconductive structure 3 on thebase layer 21, so as to be electrically connected to the firstconductive layer 12 of the soundingbody 1, and thesecond pin 42 is connected to the secondconductive layer 22 of thebase body 2. That is, if the soundingbody 1 and thebase body 2 are not partitioned, only oneconductive area 211 is arranged on thebase layer 21, and only two pins are required to be arranged on the correspondingflexible circuit board 4; if the soundingbody 1 and thebase body 2 are divided into two areas, for example, twoconductive areas 211 are correspondingly arranged on thebase layer 21, and two pins, namely four pins, are arranged on the correspondingflexible circuit board 4 corresponding to eachconductive area 211. In another alternative embodiment, as shown in fig. 6 and 7, when the soundingbody 1 and thebase body 2 are partitioned, only oneconductive area 211 may be disposed on thebase layer 21, a plurality ofconductive structures 3 are disposed in theconductive area 211, each firstconductive area 121 of the soundingbody 1 is electrically connected to eachconductive structure 3 of theconductive area 211, that is, all the firstconductive areas 121 of the soundingbody 1 are led out from thebase layer 21 through theconductive area 211, in this case, one end of theflexible circuit board 4 is disposed with pins having the same number as the sum of the firstconductive areas 121 and the second conductive areas, and all the firstconductive areas 121 of the soundingbody 1 and all the second conductive areas of thebase body 2 are connected to corresponding pins on theflexible circuit board 4, that is, all the first conductive areas are led out through theflexible circuit board 4.

In addition, an insulating layer 5 is further disposed between the firstconductive layer 12 and the secondconductive layer 22, the insulating layer 5 may be disposed on the firstconductive layer 12, or may be disposed on the secondconductive layer 22, and the insulating layer 5 is not disposed in a region of the firstconductive layer 12 corresponding to theconductive structure 211 on thebase layer 21, so as to achieve electrical connection between theconductive structure 211 and the firstconductive layer 12.

The soundingbody 1 is attached to thebase body 2 in a frame-and-frame mode, an air gap 6 is formed between the soundingbody 1 and thebase body 2, and the soundingbody 1 oscillates in response to the application of an electric signal on the firstconductive layer 12 to emit modulated ultrasonic waves into the air to perform directional sounding.

As shown in fig. 8 and 9, thebase 2 is not limited to a singlesound generating body 1, that is, a plurality of conductive bodies may be provided on thebase 2, and for example, a touch layer 7 may be further laminated on thesound generating body 1, and the touch layer 7 may be led out from the base 21 by leading out its electrodes to the base 21 through a conductive structure provided on thebase 21. Specifically, if the touch layer 7, thebase 1 and the soundingbody 1 are not partitioned, aconductive area 211 is disposed on thebase layer 21, and twoconductive structures 3 are disposed on theconductive area 211, wherein oneconductive structure 3 is connected to the firstconductive layer 12 of the soundingbody 1, and the otherconductive structure 3 is connected to an electrode (not shown) of the touch layer 7. If under the condition of touch-control layer 7,base member 1 and the 1 subregion of sound generating body, if equally divide into two districts, then can correspond two districts and set up twoconductive area 211 respectively onbasic unit 21, set up twoconductive structure 3 on everyconductive area 211,flexible circuit board 4 then corresponds everyconductive area 211 and sets up 3 pins, supplies to set up 6 pins promptly, analogizes in proper order. In addition, only oneconductive area 211 may be disposed on thebase layer 21, a plurality ofconductive structures 3 are disposed in theconductive area 211, each firstconductive area 121 of the soundingbody 1 and each conductive area of the touch layer 7 are electrically connected to the correspondingconductive structure 3 of theconductive area 211, that is, all the firstconductive areas 121 of the soundingbody 1 and all the conductive areas of the touch layer 7 are led out from thebase layer 21 through theconductive area 211, and at this time, one end of theflexible circuit board 4 is disposed with pins having the same number as the sum of the three conductive areas, namely, the firstconductive area 121, the second conductive area, and the conductive areas on the touch layer 7, and all the firstconductive areas 121 of the soundingbody 1, all the second conductive areas of thebase body 2, and all the conductive areas of the touch layer 7 are connected to the corresponding pins on theflexible circuit board 4, that is, all the conductive areas are led out through theflexible circuit board 4.

The utility model has the advantages that the electrodes on the multilayer electric conductors of the sounding device are all led into thebase body 2, and the electrodes on the electric conductors and the electrodes on thebase body 2 are led out uniformly on thebase body 2, so that final wiring is facilitated. And all electrodes on thesubstrate 2 are led out through theflexible circuit board 4, so that the appearance of the final product is attractive, and the final sounding product is facilitated to realize a narrower frame. In addition, the utility model omits a lead structure on the electric conductor and reduces the integral thickness of the sound production product after lamination.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims (10)

1. The sounding device is characterized by comprising a base body and at least one layer of electric conductor stacked on the base body, wherein each layer of electric conductor comprises an electric conduction base body and a first electric conduction layer arranged on the electric conduction base body, the base body comprises a base layer and a second electric conduction layer arranged on the base layer, the first electric conduction layer of each layer of electric conductor is led out of the base body through an electric conduction structure, the electric conduction structure is arranged on the base body and is electrically isolated from the second electric conduction layer on the base body, and the first electric conduction layer of each layer of electric conductor is led out of the base layer through the corresponding electric conduction structure and is led out of the base layer together with the second electric conduction layer.

2. A sound generating device as claimed in claim 1, wherein the first conductive layer and the second conductive layer are divided into a plurality of conductive areas, each conductive area of the first conductive layer is led to the corresponding base layer through a conductive structure, and each conductive area corresponding to the second conductive layer is led out from the base layer.

3. A sound generating device as claimed in claim 1, wherein said first and second conductive layers are divided into a plurality of conductive regions, said substrate is provided with a conductive region electrically isolated from said second conductive layer, said conductive region is provided with a plurality of conductive structures, each conductive region of said first conductive layer is electrically connected to a corresponding conductive structure of said conductive region, and each conductive region corresponding to said second conductive layer is led out from said conductive region of said substrate.

4. A sound generating device as claimed in claim 2 or 3, wherein all of the conductive areas of the first conductive layer and all of the conductive areas of the second conductive layer extend from the same side of the substrate.

5. A sound generating device as claimed in claim 2, wherein said substrate is provided with at least one conductive area electrically isolated from said second conductive layer, each of said conductive areas having said conductive structure formed thereon.

6. A sound-generating device as claimed in claim 3 or 5, wherein the conductive regions are located adjacent the outer edges of the substrate.

7. A sound generating device as claimed in claim 2 or 3, wherein said conductive structure further comprises a flexible circuit board, and all conductive areas of said first conductive layer and all conductive areas of said second conductive layer are led out through said flexible circuit board.

8. The sound generating device of claim 1, further comprising an insulating layer disposed between the first conductive layer and the second conductive layer, wherein the insulating layer is absent from an area of the first conductive layer corresponding to the conductive structure.

9. A sound generating device as claimed in any one of claims 1 to 3, 5 or 8, wherein the conductive structure is a conductive particle or a soldered structure.

10. A sound generating device as claimed in claim 9, wherein said conductive particles are thermally compressed onto said substrate.

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