KR20200030786A - PLAT SPEAKER HAVING MULTI PATTERN VOICE COIL AND MULTI-LAYERS VlOICE COIL PLATE - Google Patents

Abstract

The present invention relates to a voice coil plate and, more specifically, to a flat plate type speaker including a voice coil plate, which can reduce the weight and an impedance value and can increase an inductance value. According to an embodiment of the present invention, the flat plate type speaker including a multi-pattern voice coil and a multi-layer voice coil plate includes a voice coil plate on which a voice coil is formed. The voice coil plate is made of a multi-layer structure, and the voice coil has a track shape in which a horizontal pattern unit and a vertical pattern unit are wound from the outside to the inside in succession. The horizontal pattern unit is made of one or more horizontal patterns and formed on all layers of the voice coil plate. The horizontal patterns of each layer are connected in parallel to each other through one or more via holes. The vertical pattern unit is formed on any one or more layers of all layers of the voice coil plate, and can be connected to the horizontal pattern unit through the one or more via holes.

Description

Flat speaker including multi-pattern voice coil and multi-layer voice coil plate {PLAT SPEAKER HAVING MULTI PATTERN VOICE COIL AND MULTI-LAYERS VlOICE COIL PLATE}

The present invention relates to a flat panel speaker, and more particularly, to a slim and flat speaker that can reduce weight, reduce an impedance value, and improve an inductance value.

The voice coil plate used in the speaker is formed by winding or coiling a voice coil in an elliptical shape on one or both sides of a predetermined base substrate.

When the current flows through the voice coil, the voice coil plate generates a magnetic field that expands and contracts at the same frequency as the audio signal around the movable coil, and the voice coil is applied to the magnetic field generated by the magnet in the speaker unit. Because it is hung, the voice coil plate moves up and down while interacting with the magnetic field generated by the voice coil in response to this magnetic field, and as the voice coil plate is connected to the diaphragm of the speaker unit, the diaphragm moves up and down to push out the air. The sound is generated by the vibration.

An example of a conventional speaker is Republic of Korea Patent Publication No. 10-1119495.

The speaker disclosed herein consists of a base frame, a diaphragm, a magnet, a magnetic plate, and a voice coil plate.

In general, the magnet plate is disposed on the top or bottom or side of the magnet to condense the magnetic force line, the magnet and the magnet plate have a structure that is seated on the base frame of a plastic material, and a voice coil plate is inserted in the center of the base frame to vibrate up and down. It has a structure in which a slot is formed.

As disclosed in the above-mentioned prior art, the voice coil formed on the conventional voice coil plate, the flow of the magnetic circuit current of the speaker by some pattern (or vertical pattern) formed in the up and down vibration direction (or vertical direction) of the voice coil plate Unlike this, since it flows in the vertical direction, left and right electromotive force different from the up and down vibration direction of the speaker is induced. Therefore, in order to increase speaker efficiency, it is necessary to eliminate or minimize the induced electromotive force generated at this time.

In addition, the impedance of the speaker is increased by increasing the intrinsic resistance value by the length of the line of the unnecessary pattern in the voice coil. Since the impedance of the speaker is inversely proportional to the inductance value, there is a problem that the efficiency of the speaker decreases due to an increase in the impedance of the speaker.

In addition, since a pattern unnecessary for up and down vibration of the voice coil plate is formed on the base substrate, only the weight of the vibration portion of the entire speaker is weighted. The increase in weight adversely affects the sound pressure and efficiency of the speaker.

Republic of Korea Registered Patent Publication 10-1119495

The problem to be solved of the present invention is to provide a flat panel speaker including a multi-pattern voice coil and a multi-layered voice coil plate that can significantly reduce weight.

In addition, it is intended to provide a structure of a voice coil formed on a voice coil plate having a multi-layer structure so that the impedance value is significantly lowered and the inductance value can be improved.

A flat-type speaker comprising a multi-pattern voice coil and a multi-layered voice coil plate according to an embodiment of the present invention is a flat-type speaker including a voice coil plate on which a voice coil is formed, wherein the voice coil plate has a multi-layered structure. It is made, the voice coil is a track pattern wound from the outside to the inside after the horizontal pattern portion and the vertical pattern portion, the horizontal pattern portion is made of one or more horizontal patterns, the horizontal pattern portion is formed on all layers of the voice coil plate , The horizontal pattern of each layer is connected to each other in parallel through one or more via holes, and the vertical pattern portion is formed on any one or more of all layers of the voice coil plate, and is connected to the horizontal pattern portion through the one or more via holes. You can.

Here, the voice coil plate is three or more layers, the voice coil is formed on one or both sides of the voice coil plate, the vertical pattern portion may be formed on any one or more of the inner layer of the voice coil plate.

Here, the voice coil has a start end and an end, and a lead wire connected to one terminal from the end can be formed on any one layer of the voice coil plate that does not intersect the vertical pattern portion.

Here, the horizontal pattern portion and the vertical pattern portion includes two or more voice coil lines, and the horizontal pattern portion includes a plurality of horizontal patterns in which two or more voice coil lines are connected in parallel, and the plurality of horizontal patterns and one of the vertical pattern portions Voice coil wires of may be connected in series with each other.

In addition, the flat-type speaker comprising a multi-pattern voice coil and a multi-layered voice coil plate according to the present invention includes a multi-layered voice coil plate having a voice coil formed thereon, and at least one via hole is formed in the multi-layer A voice coil may be connected through the via hole, and the voice coil may be formed of a single track-type line starting from a (+) terminal to a (-) terminal from a top layer to a bottom layer.

Here, the voice coil is divided into a horizontal pattern portion in the longitudinal direction and a vertical pattern portion in the width direction, and the horizontal pattern portion may have two or more lines connected in parallel.

Here, the voice coil is divided into a horizontal pattern portion in a length direction and a vertical pattern portion in a width direction, and the horizontal pattern portion is formed of one or more horizontal patterns, and the horizontal pattern portion is formed on all layers of the voice coil plate, and one The horizontal pattern of each layer is connected to each other in parallel through the via holes above, and the vertical pattern portion is formed on any one or more of all layers of the voice coil plate, and can be connected to the horizontal pattern portion through the one or more via holes. .

Here, the horizontal pattern portion and the vertical pattern portion includes two or more voice coil lines, and the horizontal pattern portion includes a plurality of horizontal patterns in which two or more voice coil lines are connected in parallel, and the plurality of horizontal patterns and one of the vertical pattern portions Voice coil wires of can be connected to each other.

1 is a perspective view of a voice coil plate according to an embodiment of the present invention.
FIG. 2 is an enlarged plan view of portion 'A' of FIG. 1.
FIG. 3 is a modified example of the voice coil plate shown in FIG. 2.
4 is another modified example of the voice coil plate shown in FIG. 2.
5A is an equivalent circuit of the voice coil shown in FIG. 2.
5B is an equivalent circuit of the voice coil shown in FIG. 4.
6 is a perspective view of a voice coil plate 200 according to another embodiment of the present invention.
7A is an equivalent circuit of the first and second voice coils shown in FIG. 6.
7 (b) is an equivalent circuit of the modification of FIG. 7 (a).
8 is a perspective view of a voice coil plate 300 according to another embodiment of the present invention.
9 is a perspective view of a voice coil plate 300 'according to another embodiment of the present invention.
10 is a perspective view of a voice coil plate according to another embodiment of the present invention.
11 is a voice coil implementation diagram for each layer of the voice coil plate shown in FIG. 10.
12 is an example of the modification of FIG. 10.
13 is another modified example of FIG. 10.
14 is another modified example of FIG. 10.

Hereinafter, a structure and an effect of a flat-type speaker including a multi-pattern voice coil and a multi-layer voice coil plate according to the present invention will be described with reference to the accompanying drawings.

The detailed description of specific embodiments shown in the accompanying drawings will be read in connection with the accompanying drawings, and the drawings are regarded as part of the description of the entire invention. References to orientation or orientation are for convenience of explanation only, and are not intended to limit the scope of the present invention in any way.

Specifically, "down, up, horizontal, vertical, upper, lower, upward, downward, upper, lower" and the like, or a derivative thereof (eg, "horizontal, downward, upward") Etc.) should be understood with reference to all the drawings and related descriptions being described. In particular, since these relative words are for convenience of explanation only, it is not required that the device of the present invention be configured or operated in a specific direction.

In addition, the term "attached, attached, connected, connected, connected, etc." refers to the mutual coupling relationship between components, unless otherwise stated, the individual components are attached or connected or fixed or indirectly. It can mean, and it should be understood as a term encompassing not only a movable, attachable, connected, fixed state, but also a non-movable state.

It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the present invention, when it is determined that detailed descriptions of related well-known configurations or functions may obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

A voice coil plate having a multi-pattern coil for a flat panel speaker according to embodiments of the present invention includes a base substrate and a voice coil.

The base substrate includes an upper surface and a lower surface, and may be formed in a single layer or may be formed in multiple layers. In the following drawings, the base substrate may be omitted.

The shape of the base substrate may be square, but is not limited thereto. The base substrate may be, for example, polygonal, circular or elliptical.

The voice coil is formed on the base substrate. Specifically, the voice coil may be formed by printing on one side or both sides of the base substrate. Here, in the case of being composed of multiple layers of the base substrate, the voice coil may be formed by printing on one or both sides of each of the multiple layers of the base substrate. The voice coil can be formed by etching the base substrate to form a PCB, and after soldering, the pattern is deposited (plated). Here, the method for forming the voice coil is not limited to the above-described PCB process or plating process, and the method for forming the voice coil may be formed by a process known or common in the art. For example, a process using MEMS technology is possible, an etching process using a laser is also possible, and a printing process is also possible. As described above, the method for forming the voice coil is various, and the method for forming the voice coil is not limited to a specific process.

The voice coil has a multi-pattern or multi-coil. The multi-pattern or multi-coil may be implemented in a horizontal pattern that plays a direct role in the magnetic circuit. The multi-pattern or multi-coil implemented in a horizontal pattern may be implemented in parallel (one-sided parallel) on one side of the base substrate, and may be implemented in parallel (two-sided parallel or multi-layered parallel) in each of two or more different planes of the base substrate. You can. In addition, the multi-pattern or multi-coil implemented in a horizontal pattern may be implemented in parallel in two or more different planes of the base substrate through a plurality of connecting portions or conductive via holes formed in the base substrate. In addition, the multi-pattern or multi-coil implemented in the horizontal pattern is implemented in parallel on one side of the base substrate, and may be implemented in parallel on two or more different planes of the base substrate. Specific examples will be described in detail below with reference to the drawings.

When the voice coil plate including the base substrate and the voice coil sends alternating current to the voice coil, the direction of the force is reversed whenever the direction of the current flowing through the voice coil is reversed according to Fleming's left-hand rule. The plate moves up and down, and as a result, the vibration plate interlocking with the voice coil plate reciprocates and the sound is reproduced from the speaker. At this time, if the diaphragm vibrates quickly (with a lot of vibrations), high sounds are played, and if the diaphragm vibrates slowly (with less vibrations), low sounds are reproduced. If the amplitude of the diaphragm is large, strong sounds are played. You can.

Hereinafter, the shape and structure of the voice coil of the voice coil plate according to various embodiments of the present invention will be described in detail with reference to the drawings.

1 is a perspective view of a voice coil plate having a multi-pattern coil for a slim speaker according to an embodiment of the present invention, and FIG. 2 is an enlarged plan view of a portion 'A' of FIG. 1.

The voice coil plate 100 illustrated in FIGS. 1 and 2 may include a base substrate 110 and a voice coil 150 formed on the base substrate 110.

Here, the voice coil plate 100 and the base substrate 110 are explained separately, but in practice, the base substrate 110 itself may be the voice coil plate 100.

The voice coil 150 may be formed by being printed on one surface of the base substrate 110.

The voice coil 150 includes one end 152 and the other end 154 formed on one surface of the base substrate 110.

Pattern portions 151 and 153 are formed between one end 152 of the voice coil 150 and the other end 154.

The pattern portions 151 and 153 may be formed in a spiral shape or a spiral shape on one surface of the base substrate 110.

The pattern portions 151 and 153 may include a first pattern portion 151 and a second pattern portion 153.

The first pattern portion 151 is formed on one surface of the base substrate 110 along the first direction. The first pattern portion 151 has a plurality of first patterns 151p. The plurality of first patterns 151p are spaced apart from each other by a predetermined distance and are disposed on one surface of the base substrate 110. The plurality of first patterns 151p are disposed in parallel.

The first direction may be the up and down vibration direction of the voice coil plate 100. That is, the plurality of first patterns 151p of the first pattern portion 151 may be arranged in the up and down vibration direction of the voice coil plate 100. Here, the first pattern portion 151 may be referred to as a vertical pattern portion or a vertical coil portion, and the plurality of first patterns 151p of the first pattern portion 151 may include a plurality of first vertical patterns or a plurality of first patterns. It may also be referred to as 1 vertical coils.

The second pattern portion 153 is formed on one surface of the base substrate 110 along the second direction. The second pattern portion 153 has a plurality of second patterns 153p. The plurality of second patterns 153p are spaced apart from each other by a predetermined distance and are disposed on one surface of the base substrate 110. The plurality of second patterns 153p are disposed in parallel.

At least two or more second patterns 153p among the plurality of second patterns 153p of the second pattern unit 153 are connected in parallel to one first pattern 151p of the first pattern unit 151. Since at least two or more second patterns 153p are connected in parallel to one first pattern 151p of the first pattern part 151, the number of the plurality of first patterns 151p of the first pattern part 151 is , Smaller than the number of the plurality of second patterns 153p of the second pattern portion 153.

Since at least two or more second patterns 153p are connected in parallel to one first pattern 151p of the first pattern unit 151, the impedance value of the voice coil 150 can be reduced, and the voice coil 150 Can increase the inductance value of. In addition, since the number of the first patterns 151p is smaller than the number of the second patterns 153p, the weight of the voice coil plate 100 can be reduced, and the sound pressure of the speaker is reduced by reducing the weight of the voice coil plate 100. Improvement can be achieved.

The second direction may be a direction perpendicular to the vertical vibration direction of the voice coil plate 100. That is, the plurality of second patterns 153p of the second pattern portion 153 may be arranged in a direction perpendicular to the up-down vibration direction of the voice coil plate 100. Here, the second pattern portion 153 may be referred to as a horizontal pattern portion or a horizontal coil portion. The plurality of second patterns 153p of the second pattern unit 153 may be referred to as a plurality of second horizontal patterns or a plurality of second horizontal coils.

3 is a modified example of the voice coil plate shown in FIG. 2, and FIG. 4 is another modified example of the voice coil plate shown in FIG. 2.

As illustrated in FIG. 3, the second pattern part 153 ′ includes a plurality of second patterns 153p, but three second patterns 153p may be connected in parallel to one first pattern 151p. have.

In addition, as shown in FIG. 4, the second pattern portion 153 ″ includes a plurality of second patterns 153p, but four second patterns 153p are attached to one first pattern 151p. Can be connected in parallel.

2 to 4, the number of second patterns 153p connected in parallel to one first pattern 151p may be composed of at least two or more. There is an advantage that the impedance value or the inductance value of the voice coil 150 can be adjusted by adjusting the number of second patterns 153p connected in parallel to one first pattern 151p.

5 (a) is the equivalent circuit of the voice coil shown in FIG. 2, and FIG. 5 (b) is the equivalent circuit of the voice coil shown in FIG.

2 and 5 (a), two second patterns 153p of the second pattern unit 153 are connected in parallel to one first pattern 151p.

4 and 5 (b), four second patterns 153p of the second pattern part 153 ″ are connected in parallel to one first pattern 151p.

As described above, referring to FIGS. 1 to 5, the voice coil plate 100 according to an embodiment of the present invention has an inductance (L) value for the second pattern portion 153 that plays a direct role in the magnetic circuit. By maintaining and connecting two or more second patterns 153p in parallel to one first pattern 151p of the first pattern part 151, it is possible to reduce the weight of the vibrating part, which is one of the most important elements of the speaker, recursively. And the inductance value can be increased. That is, by minimizing the number of the first pattern 151p of the first pattern part 151, the weight of the voice coil plate 100 is reduced, and the efficiency is increased in the up and down vibration of the induced electromotive force, and through parallel connection The impedance value can be significantly lowered, and the inductance (L) value can be increased while maintaining the impedance.

6 is a perspective view of a voice coil plate 200 having a multi-pattern coil for a slim speaker according to another embodiment of the present invention.

Referring to FIG. 6, in the voice coil plate 200 according to another embodiment of the present invention, first and second voice coils 250a and 250b are formed on both sides of the base substrate 210, respectively.

The first voice coil 250a formed on the upper surface of the base substrate 210 is the same as the voice coil 150 illustrated in FIGS. 1 and 2, and the second voice coil 250b formed on the lower surface of the base substrate 210 It is the same as the voice coil 150 shown in FIGS. 1 and 2. Here, the first voice coil 250a may be the voice coil illustrated in FIG. 3 or 4, and the second voice coil 250b may also be the voice coil illustrated in FIG. 3 or 4.

The other end of the first voice coil 250a and one end of the second voice coil 250b may be electrically connected by a connection portion 250c formed on the base substrate 210. The connection part 250c may be a conductive member formed in a via hole penetrating the upper and lower surfaces of the base substrate 210.

FIG. 7 (a) is an equivalent circuit of the first and second voice coils shown in FIG. 6, and FIG. 7 (b) is an equivalent circuit of a modification of FIG. 7 (a).

Referring to FIG. 7A, the second pattern portion 253a of the first voice coil 250a and the second pattern portion 253b of the second voice coil 250b are connected in parallel.

FIG. 7B shows four second patterns among the second patterns included in each of the second pattern portion 253a ″ of the first voice coil and the second pattern portion 253b ″ of the second voice coil. It is connected in parallel to this one first pattern. Referring to FIG. 7B, the second pattern portion 253a ″ of the first voice coil and the second pattern portion 253b ″ of the second voice coil are connected in parallel.

8 is a perspective view of a voice coil plate 300 having a multi-pattern coil for a slim speaker according to another embodiment of the present invention.

The voice coil plate 300 according to another embodiment of the present invention includes a base substrate (not shown) and voice coils 351 and 353 formed on the base substrate (not shown).

The base substrate (not shown) may have a single-layer structure as illustrated in FIG. 1, but is not limited thereto. The base substrate (not shown) may have a multi-layer structure. When the base substrate (not shown) has a multilayer structure, each layer may include an upper surface and a lower surface.

The base substrate (not shown) includes a plurality of connection parts 370. The plurality of connecting parts 370 may be a conductive member filled with a conductive material in a via hole penetrating the base substrate (not shown). The first pattern part 351 and the second pattern part 353 may be electrically connected through the connection part 370.

The voice coils 351 and 353 include a first pattern portion 351 and a second pattern portion 353. The connection part 370 is disposed between the first pattern part 351 and the second pattern part 353. The first pattern portion 351 and the second pattern portion 353 are electrically connected through the connection portion 370.

The first pattern portion 351 is formed on the base substrate along the first direction. The first pattern part 351 has a plurality of first patterns 351p. The plurality of first patterns 351p are spaced apart from each other by a predetermined distance and disposed on the base substrate. The plurality of first patterns 351p may be arranged in parallel.

The plurality of first patterns 351p may be disposed on one surface of the base substrate. However, the present invention is not limited thereto, and the plurality of first patterns 351p may be disposed on different planes instead of the same plane.

For example, when the base substrate has a single layer structure, some of the plurality of first patterns 351p may be disposed on the upper surface of the base substrate, and the other may be disposed on the lower surface of the base substrate.

On the other hand, when the base substrate is a multi-layer structure, some of the plurality of first patterns 351p may be disposed on either one of the upper and lower surfaces of each layer, and the other may be disposed on the other surface. For example, some of the first patterns of the plurality of first patterns 351p are disposed on the upper or lower surface of the first layer of the multi-layered base substrate, and the remaining first patterns are the nth of the multi-layered base substrate. It may be disposed on the upper or lower surface of the layer (where n is a natural number greater than 1).

The first direction may be an up and down vibration direction of the voice coil plate 300. That is, the plurality of first patterns 351p of the first pattern part 351 may be arranged in the up and down vibration direction of the voice coil plate 300. Here, the first pattern portion 351 may be referred to as a vertical pattern portion or a vertical coil portion, and the plurality of first patterns 351p of the first pattern portion 351 may include a plurality of first vertical patterns or a plurality of It may also be referred to as first vertical coils.

The second pattern portion 353 is formed on the base substrate (not shown) along the second direction. The second pattern part 353 has a plurality of second patterns 353p. The plurality of second patterns 353p are spaced apart from each other by a predetermined distance and are disposed on the base substrate (not shown). The plurality of second patterns 353p may be arranged in parallel.

Unlike the plurality of second patterns 153p illustrated in FIG. 1, the plurality of second patterns 353p are not disposed on only one surface of the base substrate. The plurality of second patterns 353p are disposed on different planes of the base substrate.

For example, when the base substrate has a single layer structure, the plurality of second patterns 353p may be disposed on the upper and lower surfaces of the base substrate.

On the other hand, when the base substrate has a multi-layer structure, the plurality of second patterns 353p may be disposed on at least two different planes of the upper and lower surfaces of each layer. Here, with different planes, the upper and lower surfaces of the base substrate correspond to different planes when the base substrate is a single-layer structure, and the upper and lower surfaces of each layer correspond to different planes when the base substrate is a multilayer structure. .

The second patterns 353p disposed on two or more different planes are connected to one connection part 370, and one first pattern 351p of the first pattern part 351 is connected to one connection part 370 Connected. Therefore, two or more second patterns 353p are connected in parallel through one connection part 370. Here, in FIG. 8, two second patterns 353p are connected in parallel to one connection unit 370, but three or more second patterns 353p may be connected in parallel to one connection unit 370.

The second direction may be a direction perpendicular to the vertical vibration direction of the voice coil plate 300. That is, the plurality of second patterns 353p of the second pattern portion 353 may be arranged in a direction perpendicular to the up-down vibration direction of the voice coil plate 300. Here, the second pattern portion 353 may be referred to as a horizontal pattern portion or a horizontal coil portion. The plurality of second patterns 353p of the second pattern part 353 may be referred to as a plurality of second horizontal patterns or a plurality of second horizontal coils.

The voice coil plate 300 having a multi-pattern coil for a slim speaker according to another embodiment of the present invention shown in FIG. 8 includes a voice coil plate 100 according to an embodiment of the present invention shown in FIG. 1. In comparison, it has the following structural features.

The voice coil plate 100 shown in FIG. 1 has a plurality of second patterns 153p of the second pattern portion 153 disposed on one surface of the base substrate 110, that is, on the same plane, but is illustrated in FIG. 8. In the voice coil plate 300, a plurality of second patterns 353p of the second pattern part 353 are disposed on two or more different planes of the base substrate (not shown).

The voice coil plate 300 illustrated in FIG. 8 may have the same effect as the voice coil plate 100 illustrated in FIG. 1. Furthermore, the voice coil plate 300 illustrated in FIG. 8 further reduces the spacing of the plurality of second patterns 353p than the spacing of the plurality of second patterns 153p of the voice coil plate 100 illustrated in FIG. 1. There are advantages. Accordingly, there is an advantage that the voice coil plate 300 can be further miniaturized.

9 is a perspective view of a voice coil plate 300 'having a multi-pattern coil for a slim speaker according to another embodiment of the present invention.

The voice coil plate 300 ′ shown in FIG. 9 further includes a voice coil plate 300 illustrated in FIG. 8 and an additional configuration.

9, the voice coil plate 300 'includes a base substrate (not shown) having a plurality of connecting portions 370a, 370b, and 370c, and first voice coils 351ap and 353ap formed on the base substrate (not shown). ) And a second voice coil (351bp, 353bp).

Here, the first voice coils 351ap and 353ap shown in FIG. 9 and the plurality of first connection parts 370a are the same as the voice coils 351 and 353 shown in FIG. 8 and the plurality of connection parts 370.

The voice coil plate 300 ′ shown in FIG. 9 further includes second voice coils 351bp and 353bp and a plurality of second connection parts 370b.

The second voice coils 351bp and 353bp include a first pattern portion and a second pattern portion, like the first voice coils 351ap and 353ap, and the first pattern portion includes a plurality of first patterns 351bp, The second pattern portion includes a plurality of second patterns (353bp). The plurality of first patterns 351bp are disposed on the base substrate along the first direction, and the plurality of second patterns 353bp are disposed on the base substrate along the second direction.

The plurality of second connection parts 370b may be disposed between the plurality of first connection parts 370a. Each second connection part 370b electrically connects the first pattern 351bp and at least two or more second patterns 353bp arranged on different planes. Two or more second patterns 353bp are connected in parallel by the second connection unit 370b.

The base substrate (not shown) further includes a third connection portion 370c. The third connection part 370c electrically connects the first pattern 351ap of the first voice coil and the first pattern 351bp of the second voice coil.

The voice coil plate 300 ′ according to another embodiment of the present invention shown in FIG. 9 further has at least one voice coil as compared to the voice coil plate 300 illustrated in FIG. 8. Therefore, it is possible to have a high inductance value, there is an advantage that the efficiency is improved.

10 to 14 are perspective views of a voice coil plate according to still another embodiment of the present invention.

10 is a perspective view of a voice coil plate according to another embodiment of the present invention, FIG. 11 is a voice coil implementation diagram for each layer of the voice coil plate shown in FIG. 10, and FIGS. 12 to 14 are modifications of FIG. 10 admit.

Referring to FIGS. 10 and 11, as described above, in the flat panel speaker, a voice coil having a track-type spiral structure is formed on the voice coil plate in a first pattern portion and a second pattern portion.

In particular, the voice coil plate of the flat panel speaker shown in FIGS. 10 and 11 is composed of a voice coil plate having a multi-layer structure, and the spiral or spiral type voice coil is a single line having one end and one end covering all layers. Is formed, the starting end is connected to the (+) terminal and the end is connected to the (-) terminal.

In addition, the track-shaped voice coil may be divided into a vertical pattern portion (first pattern portion, 451) and a horizontal pattern portion (second pattern portion, 453), and they form a spiral or spiral shape.

1 to 9, the vertical pattern portion 451 may be one voice coil wire, and the horizontal pattern portion 453 may be two or more voice coil wires.

The voice coil structure of the voice coil plate shown in FIGS. 10 and 11 will be described in detail.

The voice coil plates 410A, 410B, 410C, and 410D have a four-layer structure, which can be a horizontal stacked or vertical stacked structure depending on the direction of the speaker, and magnets constituting magnetic circuits on both sides of the voice coil board And a yoke (not shown), and a vibrating plate (not shown) that vibrates by up and down (or left and right) motion of the voice coil plate may be attached.

Voice coil plates 410A, 410B, 410C, and 410D may have voice coils formed on one or both sides, and each of them may have a single-line spiral track pattern.

However, when each of the voice coils of each layer has a spiral track pattern of one line, it is possible to implement a structure in parallel and serially connected to each other through via holes, etc., but in the present invention, the entire voice coil of each layer is a single line spiral track pattern structure I want to implement the case with.

More specifically, in the case of electrically connecting voice coils to each other in the voice coil plate having the four-layer structure shown in FIG. 10, the spiral track pattern of four lines is connected in parallel to each other via via holes, but in the present invention 1 The spiral track pattern of the circuit can be realized.

FIG. 10 shows only the voice coil formed on the voice coil plate, not the voice coil plate.

A voice coil is shown formed in four layers of voice coil plates sequentially from top to bottom vertically.

The voice coil 411A of the top layer and the voice coils 411B and 411C of the inner layer and the voice coil 411D of the bottom layer are sequentially shown.

The voice coil is a spiral track pattern, and among the track patterns, the vertical pattern portion 451 and the horizontal pattern portion 453 are connected to each other based on the width direction of the voice coil plate to form a single line.

First, a horizontal pattern portion 453 may be formed on all layers of the voice coil plates 410A, 410B, 410C, and 410D of the first to fourth layers.

The horizontal pattern portion 453 is a coil necessary for maximizing the induced electromotive force for increasing the efficiency of the up and down vibration of the speaker. The implementation of the multilayered voice coil plate maximizes the induced electromotive force by forming a voice coil on each coil plate. Is what you want.

Therefore, the horizontal pattern portion 453 is preferably formed on each layer. However, it is not a problem in implementing the subject matter of the present invention to omit the partial layer formation of the horizontal pattern portion 453 as necessary.

The vertical pattern part 451 vertically vibrates in a state where the voice coil plate is vertically vertical, and since electromotive force is induced to the left and right differently from the up and down vibration of the speaker, it is necessary to minimize this in order to increase speaker efficiency, and unnecessary coil or The intrinsic resistance value is weighted by the line length to increase the speaker impedance, thereby reducing the speaker efficiency against the inductance value.

Therefore, since the vertical pattern portion 451 is required to form a spiral or spiral pattern, there is no reason to form the vertical pattern portion 451 on each layer.

Therefore, in the present invention, the vertical pattern portion 451 is not formed on each layer, but the vertical pattern portion 451 is formed only on the required layer to provide a structure capable of increasing the overall organic electromotive force of the speaker.

Based on this principle, as an example, a four-layer structure of a flat panel speaker is illustrated in FIGS. 10 and 11.

The horizontal pattern portion 453 may be connected to two or more lines in parallel with each other (meaning that multiple horizontal patterns are connected to each other in parallel), and may be connected to the horizontal pattern portion 453 of another layer through the via hole 420.

The first and fourth voice coil plates 410A, 410D have first and fourth layers 411A, 411D divided vertically, so that only the voice coil has a horizontal pattern portion 453, and the (+) terminal 430a ) And (-) terminals 430b are formed.

On the second layer 411B of the second voice coil plate 410B, a horizontal pattern portion 453 divided vertically and a vertical pattern portion 451 on the (+) terminal side are formed, and the third voice coil plate 410C is formed. ), A horizontal pattern portion 453 divided vertically and a vertical pattern portion 451 on the (-) terminal side are formed on the third layer 411C.

The vertical pattern portion 451 on the (+) terminal side is formed on the second layer 411B, and the vertical pattern portion 451 on the (-) terminal side is formed on the third layer 411C, and the (-) terminal The lead wire 460 is formed in the second layer 411B.

Since via holes 420 are formed at both ends of the horizontal pattern portions 453 of each layer, the via holes 420 are connected to the horizontal pattern portions 453 of different layers, and are also connected to one vertical pattern portion 451. do.

With this configuration, the voice coil of each layer can have a spiral structure of one line.

Looking at it, the outermost upper side horizontal pattern 453p starting with the (+) terminal (the outermost voice coil wire on the fourth floor is connected through the via hole 420) is the outermost (-) formed on the third layer 411C. ) Is connected to the terminal side vertical pattern (451p), again the outermost lower side horizontal pattern 453p (the outermost voice coil wires on the fourth floor are connected to each other via via hole 420) is (+) the inner side of the terminal It is connected to the vertical pattern 451p, which in turn continues in a spiral form in the order of the inner upper side horizontal pattern 453p, (-) terminal side inner vertical pattern 451p, and inner lower side horizontal pattern 453p. It is connected and connected to the lead wire 460 at the end.

Therefore, the voice structure of all layers starting from the (+) terminal can be implemented with a coil structure in the form of a one-line track.

11 shows the shape of the voice coils formed on the four layers of voice coil plates 410A, 410B, 410C, and 410D.

Referring to FIG. 12, FIG. 12 is a flat speaker of a voice coil plate having the same four-layer structure as a modified example of FIG. 10, and the vertical pattern portion 451 on the (+) terminal side is a top layer rather than an inner layer. It is formed and shows an example in which the (-) terminal side vertical pattern portion 451 is formed in a bottom layer rather than an inner layer.

Although not shown, in the four-layer structure as shown in FIGS. 10 and 12, the vertical pattern portion 451 may be formed on any one layer, and it is not a problem in the implementation of the present invention even if it is formed on any other layer.

13 and 14, FIG. 13 shows a three-layer voice coil plate structure, and FIG. 14 shows a five-layer voice coil plate structure.

The three-layer structure shows an example in which the (+) terminal-side and (-) terminal-side vertical pattern portions 451 are formed on the inner layer, and the five-layer structure has a (+) terminal-side vertical pattern portion 451 and four layers on the three-layer structure. An example in which the (-) terminal side vertical pattern portion 451 is formed is shown.

As such, the multi-layer structure of the flat panel speaker of the present invention can be applied to all two or more layers.

In order to implement the present invention shown in FIGS. 10 to 14, it is preferable to form only a horizontal pattern portion on the top and bottom layer surfaces, and a vertical pattern portion to form a spiral structure on the inner layer. .

All voices and coils are implemented in a spiral shape of one line starting from the (+) terminal and ending with the (-) terminal.

In the case of the n-layer voice coil plate structure, although the length (L value) of the line of the horizontal pattern portion effective for driving the entire speaker is n times, the total system impedance can be lowered to 1 / n in n parallel by via holes. There will be.

In the case of a four-layer voice coil plate, the vertical pattern part can be composed of only the inner layer, or a spiral can be composed of only 1/4 vertical lines, or when the vertical pattern part is divided into two layers and three layers to form a spiral One floor can consist of only 1/8 vertical lines.

In this case, the vertical line can be reduced to ¼ to reduce unnecessary patterns and innovatively reduce the system weight.

In addition, when voice coils are formed on both sides of the voice coil plate instead of one side of the voice coil plate, when four-layer voice coil plates are stacked, it may be the case that voice coils of eight layers are formed. Of course, the pattern in which the coil is formed is also possible in the same way as the cross-sectional pattern.

In addition, since there is no actual pattern on the left and right sides of the top layer and the bottom layer, space is secured so that the terminal connection pattern can be located anywhere, and can be used for other purposes. .

Features, structures, effects, and the like described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, and the like exemplified in each embodiment may be combined or modified for other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiments have been mainly described above, these are merely examples and do not limit the present invention, and those of ordinary skill in the art to which the present invention pertains have the above-described scope without departing from the essential characteristics of the present embodiment. It will be appreciated that various modifications and applications not illustrated are possible. For example, each component specifically shown in the embodiment can be implemented by modification. And differences related to these modifications and applications should be construed as being included in the scope of the invention defined in the appended claims.

100, 200, 300, 300 ', 300'', 410A, 410B, 410C, 410D: Voice coil plate
110, 210: base substrate
150, 250, 350, 450: Voice coil

Claims (8)

In the flat speaker including a voice coil plate is formed a voice coil,
The voice coil plate is made of a multi-layer structure,
The voice coil is in the form of a track wound from the outside to the inside in succession with the horizontal pattern portion and the vertical pattern portion,
The horizontal pattern portion is formed of one or more horizontal patterns, the horizontal pattern portion is formed on all layers of the voice coil plate, and the horizontal pattern of each layer is connected in parallel to each other through one or more via holes,
The vertical pattern portion is formed on any one or more of all layers of the voice coil plate, and is connected to the horizontal pattern portion through the one or more via holes, a flat pattern including a multi-pattern voice coil and a multi-layered voice coil plate speaker. According to claim 1,
The voice coil plate is three or more layers,
The voice coil is formed on one or both sides of the voice coil plate,
The vertical pattern portion is formed on any one or more of the inner layer of the voice coil plate, a flat-type speaker including a multi-pattern voice coil and a voice coil plate of a multi-layer structure. According to claim 1,
The voice coil has a start end and an end end,
The lead wire connected to one terminal from the end is formed on any one layer of the voice coil plate that does not intersect the vertical pattern portion, a flat-type speaker including a multi-pattern voice coil and a multi-layered voice coil plate. According to claim 1,
The horizontal pattern portion and the vertical pattern portion includes two or more voice coil wires,
The horizontal pattern portion includes a plurality of horizontal patterns in which two or more voice coil wires are connected in parallel,
A flat speaker comprising a multi-pattern voice coil and a multi-layered voice coil plate in which the plurality of horizontal patterns and one voice coil line of the vertical pattern part are connected in series with each other. It includes a voice coil plate of a multi-layer structure in which a voice coil is formed,
One or more via holes are formed in the multi-layer so that voice coils of each layer can be connected through the via holes.
The voice coil includes a multi-pattern voice coil and a multi-layered voice coil plate formed of a track-type single line starting from a (+) terminal to a (-) terminal from a top layer to a bottom layer. Flat speaker. According to claim 1,
The voice coil is divided into a horizontal pattern portion in the longitudinal direction and a vertical pattern portion in the width direction,
The horizontal pattern portion is a flat speaker including a multi-pattern voice coil and a multi-layered voice coil plate in which two or more lines are connected in parallel. According to claim 1,
The voice coil is divided into a horizontal pattern portion in the longitudinal direction and a vertical pattern portion in the width direction,
The horizontal pattern portion is formed of at least one horizontal pattern, the horizontal pattern portion is formed on all layers of the voice coil plate, and the horizontal pattern of each layer is connected to each other in parallel through one or more via holes,
The vertical pattern portion is formed on any one or more of all layers of the voice coil plate, and is connected to the horizontal pattern portion through the one or more via holes, a flat pattern including a multi-pattern voice coil and a multi-layered voice coil plate speaker. The method of claim 6 or 7,
The horizontal pattern portion and the vertical pattern portion includes two or more voice coil wires,
The horizontal pattern portion includes a plurality of horizontal patterns in which two or more voice coil wires are connected in parallel,
A flat panel speaker comprising a multi-pattern voice coil and a multi-layered voice coil plate in which the plurality of horizontal patterns and one voice coil line of the vertical pattern portion are connected to each other.

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