KR20200032629A - Display apparatus - Google Patents

Abstract

According to an embodiment of the present invention, a display device comprises: a display panel displaying images; a sound generation device disposed on the rear surface of the display panel; a rear cover disposed on the rear surface of the display panel to support the display panel; partition members disposed between the rear surface of the display panel and the rear cover to partition the display panel into a first area, a second area, a third area, a fourth area, and a fifth area; and a first sound generation device, a second sound generation device, a third sound generation device, a fourth sound generation device, and a fifth sound generation device attached to the rear surface of the display panel and arranged to vibrate the display panel. The first sound generation device, the second sound generation device, the third sound generation device, the fourth sound generation device, and the fifth sound generation device are respectively disposed in the first area, the second area, the third area, the fourth area, and the fifth area to output a 3D sound. Therefore, the display device can simultaneously output a sound to the front and rear of the display panel.

Description

Display device {DISPLAY APPARATUS}

This application relates to a display device.

As the recent era of information has been developed, the display field for visually expressing electrical information signals has rapidly developed, and in response to this, various display devices having excellent performance of thinning, lightening, and low power consumption (Display Apparatus) Is being developed. Specific examples of such a display device include a liquid crystal display device, a field emission display device, and an organic light emitting display device.

In general, the display device displays all images on the display panel, but a separate speaker must be installed to provide sound. When the speaker is installed on the display device, the direction of sound generated through the speaker is the side or top and bottom of the display panel rather than the front or rear of the display panel on which the image is displayed, so that the viewer views the image from the front of the display panel. As the sound does not proceed, there is a problem that interferes with the immersion of the viewer watching the image.

In addition, when a speaker included in a set device such as a TV is configured, the speaker occupies a certain space, and thus, a problem arises in that the design and space arrangement of the set device are restricted. To solve this problem, the previous display device may output sound to the front of the display panel through vibration of the display panel, but has a problem that it is difficult to output low-range sound. For example, if the display panel is vibrated to output sound in a low-frequency range, a problem occurs in that the display panel shakes and the image is shaken. In addition, the vibration generating device that outputs low-range sound has a large amount of heat, which adversely affects the life of the display panel. In order to solve this, there is a need to develop a display device that can prevent the shaking of the display panel and prevent heat transfer in the process of outputting low-range sound.

An object of the present application is to provide a display device capable of simultaneously outputting sound to the front and rear of a display panel.

In addition, the present application has a technical problem to provide a display device capable of outputting a wide low tone reproduction band and high sound pressure sound.

The problems solved according to the present application are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

A display device according to an embodiment of the present invention includes a display panel for displaying an image, a sound generating device disposed on the back of the display panel, and a rear cover disposed on the back of the display panel to support the display panel, and the sound generating device , A first sound generating module attached to the rear surface of the display panel, and a second sound generating module disposed apart from the rear surface of the display panel.

A display device according to another exemplary embodiment of the present invention includes a display panel displaying an image, a partition member dividing the display panel into a lower right area, a lower left area, an upper central area, an upper right area and an upper left area, and a lower right area , A first sound generating device, a second sound generating device, a third sound generating device, a fourth sound generating device, and a fifth sound generating device disposed in each of the lower left area, the upper central area, the upper right area, and the upper left area. The first sound generating device and the second sound generating device include a first sound generating module attached to the rear surface of the display panel, and a second sound generating module spaced apart from the rear surface of the display panel, and third The sound generating device, the fourth sound generating device, and the fifth sound generating device may be actuators that directly vibrate the display panel. .

Specific details of other embodiments are included in the detailed description and drawings.

The display device according to the present application can generate a sound such that the direction of the sound (direction) is strong mid (400 Hz or more) to high (20 kHz or less) so that the direction of the sound is directed to the front of the display panel, and the direction (direction) is weak. (200 Hz or less) can generate sound to the back of the display panel. Therefore, it is possible to improve the immersive feeling of the viewer watching the image of the display device by matching the location where the image and sound of the display device are generated.

In addition, since the display device according to the present application does not need to separately configure a speaker, it is possible to improve the degree of freedom for the arrangement of the speaker and to improve the design aesthetics of the set device.

1 is a perspective view of a display device according to an example of the present application.
2 is a view showing the sound output of the display device according to an example of the present application.
3 is a cross-sectional view of a display device according to an example of the present application.
4 is a cross-sectional view for explaining another example of the sound generating device.
5 is a cross-sectional view for explaining another example of the sound generating device.
6A to 6D are detailed cross-sectional views, front views, side views, and rear views of the sound generating device.
7A to 7D are front, side, and rear views of a sound generating device according to an example of the present application.
8 is a perspective view of a display device according to another example of the present application.
9 is a view showing the sound output of the display device according to another example of the present application.
10A to 10G are views illustrating another example of a sound generating device and a partition member in the display device of the present specification.
11 is a perspective view of a display device according to another example of the present application.
12 is a diagram illustrating sound output of a display device according to another example of the present application.
13A to 13I are views illustrating another example of a sound generating device and a partition in the display device of the present specification.
14A is a cross-sectional view taken along line II of FIG. 10E.
14B is a cross-sectional view taken along line II-II 'of FIG. 13B.
15A is a cross-sectional view for describing an example of a sound generating device.
15B is a cross-sectional view for explaining an example of a sound generating device.
16A is a rear view of a display device according to another example of the present application.
16B is a rear view of a display device according to another example of the present application.
17 is a graph showing sound pressure characteristics of a display device according to an example of the present application.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and the general knowledge in the technical field to which the present invention pertains. It is provided to fully inform the holder of the scope of the invention, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for describing the embodiments of the present invention are exemplary and the present invention is not limited to the illustrated matters. The same reference numerals refer to the same components throughout the specification. In addition, in the description of the present invention, when it is determined that detailed descriptions of related known technologies may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted. When 'include', 'have', 'consist of', etc. mentioned in this specification are used, other parts may be added unless '~ man' is used. When a component is expressed as a singular number, the plural number is included unless otherwise specified.

In analyzing the components, it is interpreted as including the error range even if there is no explicit description.

In the case of the description of the positional relationship, for example, when the positional relationship of two parts is described as '~ top', '~ upper', '~ bottom', '~ side', etc., 'right' Alternatively, one or more other parts may be located between the two parts unless 'direct' is used.

In the case of a description of a time relationship, for example, 'after', 'following', '~ after', '~ before', etc., when the temporal sequential relationship is described, 'right' or 'direct' It may also include cases that are not continuous unless it is used.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are only used to distinguish one component from another component. Accordingly, the first component mentioned below may be the second component within the technical spirit of the present invention.

It should be understood that the term “at least one” includes all combinations that can be presented from one or more related items. For example, the meaning of “at least one of the first item, the second item, and the third item” means the first item, It may mean a combination of all items that can be presented from two or more of the first item, the second item, and the third item, as well as each of the second item or the third item.

Each of the features of the various examples of the present application may be partially or wholly combined with or combined with each other, technically various interlocking and driving may be possible, and each of the examples may be independently implemented with respect to each other or may be implemented together in an associative relationship. .

In describing the components of the present specification, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the component from other components, and the essence, order, order, or number of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected to or connected to the other component, but different components between each component It will be understood that the "intervenes" may be, or each component may be "connected", "coupled" or "connected" through other components.

In the present specification, "display device" is a liquid crystal module including a display panel and a driving unit for driving the display panel (Liquid Crystal Module; LCM), an organic light emitting module (OLED Module), a quantum dot module (Quantum Dot Module) It may include a display device. In addition, a battlefield including a laptop computer, a television, a computer monitor, an automotive display, or other form of a vehicle, which is a complete product or a final product, including an LCM, OLED module, QD module, and the like. It may also include a set electronic device or set device, such as a mobile electronic device, such as a device (equipment display), a smart phone, or an electronic pad.

Therefore, the display device in the present specification may include a narrow display device itself such as an LCM, OLED module, QD module, and even a set device that is an application product or a final consumer device including LCM, OLED module, QD module, and the like. .

In some cases, the LCM, OLED module, and QD module composed of the display panel and the driving unit are expressed as a negotiated "display device", and the electronic device as a finished product including the LCM, OLED module, and QD module is set. Device. For example, the consultation display device includes a display panel of liquid crystal (LCD), organic light emitting (OLED) or quantum dot (Quantum Dot), and a source PCB as a control unit for driving the display panel, and the set device is connected to the source PCB. It may be a concept that further includes a set PCB which is a set control unit that is electrically connected to control the entire set device.

The display panel used in the present embodiment includes all forms of a liquid crystal display panel, an organic light emitting diode (OLED) display panel, a quantum dot (QD) display panel, and an electroluminescent display panel. The display panel may be used, and is not limited to a specific display panel capable of bending a bezel with a flexible substrate for an organic light emitting (OLED) display panel of the present embodiment and a lower back play support structure. In addition, the display panel used in the display device according to the embodiment of the present specification is not limited to the shape or size of the display panel.

Hereinafter, an example of a display device according to the present application will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a display device according to an example of the present application. It includes a display panel 100 for displaying an image, a sound generating device 210 disposed on the back of the display panel, and a rear cover 300 disposed on the back of the display panel to support the display panel, and the sound generating device 210 ) Includes a first sound generating module attached to the rear surface of the display panel and a second sound generating module spaced apart from the rear surface of the display panel.

The display panel 100 displays an image, and may be implemented as any type of display panel, such as a liquid crystal display panel, an organic light emitting diode (OLED) display panel, and an electroluminescent display panel. have. The display panel 100 may output sound by vibrating according to the vibration of the sound generating device.

According to an example, the display panel 100 may include a top emission method, a bottom emission method, or dual emission according to the structure of a pixel array layer including an anode electrode, a cathode electrode, and an organic compound layer. An image may be displayed in the form of a dual emission method or the like. The top emission method can display the image by emitting visible light generated from the pixel array layer toward the front of the base substrate, and the bottom emission method displays the image by emitting visible light generated from the pixel array layer toward the rear of the base substrate. can do.

The rear cover 300 is disposed on the rear side of the display panel 100 to support the display panel 100. For example, the rear cover 300 is spaced apart from the display panel 100 to support the sound generating device disposed on the rear cover 300.

The rear cover 300 covers the entire rear surface of the display panel 100 to be spaced apart, and may have a flat plate shape made of a glass material, a metal material, or a plastic material. Here, the edge or sharp edge portion of the rear cover 300 may have a slope shape or a curved shape by a chamfering process or a corner rounding process. According to an example, the glass material back cover 300 may be sapphire glass. For example, the metal back cover 300 may be made of any one of aluminum, aluminum alloy, magnesium alloy, and iron and nickel alloy. For another example, the rear cover 300 may have a laminated structure of a glass plate facing the rear surface of the display panel 100 while having a relatively thinner thickness than the metal plate and the glass plate. In this case, the display device ( The back surface of 10) may be used as a mirror surface by a metal plate.

2 is a view showing the sound output of the display device according to an example of the present application. The first sound generating module may directly vibrate the display panel 100 by being in contact with the rear surface of the display panel 100. Therefore, the sound generating device including the first sound generating module uses the display panel 100 as a diaphragm of the sound generating device to output sound to the rear (RD) of the display panel 100 and to the front (FD) instead of below. By doing so, it is possible to improve the immersive feeling of the viewer watching the image of the display device 10 by matching the location of the image generated by the display device 10 with the sound. The first sound generating module may generate high-frequency sound (HFS).

The first sound generating module may output sound by vibrating the display panel 100 according to an applied current for generating sound based on Fleming's left hand rule. According to an example, the first sound generating module may include a first magnet 211a, a first plate 212a, a first exciter 213a, a bobbin ring 214a, and a first damper 215a. have.

The second sound generating module may be disposed spaced apart from the rear surface of the display panel, and may generate sound by vibrating the air layer of the display panel and the sound generating device through the diaphragm, and generate the sound in front of the diaphragm (FD) and the rear ( RD). The second sound generating module may generate low-level sound (LFS). According to an example, the second sound generating module may correspond to a woofer, and is not limited to terms.

3 is a cross-sectional view of a display device according to an example of the present application. The rear cover 300 may include a first hole 310 to which the sound generating device may be mounted and a second hole 320 to discharge the front sound generated from the second sound generating module.

The first hole 310 of the rear cover 300 may be equipped with a sound generating device. The second hole 320 of the rear cover may discharge sound generated inside the sound generating device. For example, the first hole 310 may be perforated to have a circular or polygonal shape in a predetermined area of the rear cover 300 along the thickness direction of the rear cover 300 in order to insert the sound generating device. . Therefore, the sound generating device may be disposed on the rear surface of the display panel 100 through the first hole 310.

According to an example, the second hole 320 of the rear cover may discharge the sound generated from the vibration plate 214b of the inside of the sound generating device, and more specifically, the second sound generating module. The vibration plate 214b of the second sound generating module may generate sound by vibrating the air layer at the periphery of the vibration plate by vibration, and for example, may output sound in a low frequency range. The sound generated by the diaphragm 214b of the second sound generating module may be divided into a first bass propagating to the upper side of the diaphragm 214b and a second bass propagating to the lower side of the diaphragm 214b. At this time, the first bass propagated to the upper side of the diaphragm 214b may be propagated through the air gap between the display panel 100 and the rear cover 300, and the second hole 320 of the rear cover 300 Can be discharged through. The second hole 320 may be provided in various shapes and sizes to improve bass characteristics.

The sound generating device 210 may include a first sound generating module attached to the rear surface of the display panel, and a second sound generating module spaced apart from the rear surface of the display panel. The sound generating device 210 may include a circular, elliptical, or a pair of sound generating devices. Oval shapes include elliptical shapes, rectangular shapes with rounded corners, or non-circular curved shapes having a width different from its height. It can be, and the embodiment is not limited to this. The elliptical sound generating device can improve the sound of a high-pitched tone band, and have less heat generation due to vibration, and thus have excellent heat dissipation characteristics.

4 to 5 are cross-sectional views illustrating an example of a sound generating device.

4 to 5, the display device according to an example of the present application is disposed at the rear of the sound generating device and at least one speaker box 400 capable of amplifying the sound generated by the sound generating device It may further include. The inner space of the speaker box 400 communicates with the hole 217 formed in the side frame 216b, for example, to amplify the low-range sound generated by the second sound generating module. The speaker box may be provided to accommodate 0.1 to 1 liter of air, but is not limited thereto.

According to an example, the speaker box 400 may be disposed on the rear side of the sound generating device and may be disposed to surround the rear end of the sound generating device. According to another example, the speaker box may be provided in an asymmetrically extended form on one side while surrounding the rear end of the sound generating device. In order to fix the speaker box 400 to the rear cover 300, the fixing device may be accommodated in the groove 420 and the groove 420 for fixing to an area adjacent to the sound generating device. Due to the use of the groove 420 and the fixing device disposed in the speaker box 400, the speaker box 400 may be securely fixed to the rear cover 300, and if necessary, the fixing device coupled to the groove 420 By removing and removing the sound generating device from the rear cover 300, the sound generating device and the speaker box 400 may be removed and replaced. A nut 430 fixed to the rear cover 300 is further included, and the groove 420 may be fixed to the nut 430 by a screw inserted into the fixing device. Therefore, since a screw through hole is formed on the inner surface of the nut 430, the sound generating device is attached to the rear cover 300 by aligning the groove 420 with the screw through hole of the nut 430 and then tightening the fixing device. Can be fixed. The nut 430 for fixing may function to adjust the distance between the sound generating device and the display panel 100. Maintaining the bobbin ring 214a of the first sound generating module in good contact with the display panel 100 may be an important factor that can output sound to the front (FD) by directly vibrating the display panel 100. have. At this time, if the distance between the bobbin ring 214a and the display panel 100 is too long, the sound is not generated properly. On the other hand, if the distance between the bobbin ring 214a and the display panel 100 is too short, the first sound generating module may be removed. 1 Damper 215a may be damaged. Accordingly, the size of the sound generating device and the distance between the display panel 100 and the sound generating device may be adjusted by varying the height of the nut 430. The fixing device may be a screw or the like, but is not limited thereto.

6A to 6D illustrate detailed cross-sectional views, front views, side views, and rear views of the sound generating device. The second sound generating module may vibrate the diaphragm according to the applied current for sound generation based on Fleming's left hand rule. According to an example, the second sound generating module may include a second magnet 211b, a second plate 212b, a second exciter 213b, a diaphragm 214b, and a second damper 215b. .

In addition, the sound generating device further includes a frame that can accommodate the first sound generating module and the second sound generating module, and according to an example, the frame may define an outer peripheral surface of the sound generating device, and the first sound generating A module and a second sound generating module can be accommodated.

The frame includes a lower frame 216a supporting the lower ends of the first sound generating module and the second sound generating module, a side frame 216b coupled with the lower frame, and including at least one hole 217, and a side frame And an upper frame 216c covering the upper portions of the first sound generating module and the second sound generating module.

The first magnet 211a may be disposed on the lower frame 216a. For example, the first magnet 211a may be interposed between the first plate 212a and the lower frame 216a. The lower frame 216a and the first plate 212a may control magnetic flux generated in the first magnet 211a. Therefore, the first magnet 211a is surrounded by the lower frame 216a and the first plate 212a, so that the magnetic flux generated in the first magnet 211a is concentrated into the first exciter 213a and the leak magnetic flux This can be suppressed.

The first plate 212a is disposed on the top of the first magnet 211a, and may be spaced apart from the bobbin ring 214a. The first magnet 211a and the first plate 212a are inserted into the first exciter 213a having a cylindrical shape, so that the outer circumferential surfaces of the first magnet 211a and the first plate 212a are first drowned. It can be surrounded by the eater (213a). Therefore, the first magnet 211a and the first plate 212a can guide the linear reciprocating motion of the first exciter 213a. Here, the first plate 212a may be represented as a center pole or pole pieces. According to an example, the first plate 212a may be made of a magnetic material such as iron (Fe), thereby increasing the magnetic flux density formed through the first magnet 211a.

The first exciter 213a may surround the first plate 212a and be attached to the rear surface of the bobbin ring 214a. For example, the first exciter 213a may surround the first magnet 211a and the first plate 212a. For example, when the current for generating sound is applied to the coil wound on the outer circumferential surface of the first exciter 213a, and a magnetic field is formed in the first sound generating module, the magnetic field is displayed by the magnetic field through the bobbin ring 214a. The panel 100 can be vibrated. Therefore, the front surface of the first exciter 213a is in contact with the bobbin ring 214a, and the first exciter 213a is displayed on the display panel through the bobbin ring 214a according to the application and non-application of current. 100) can be vibrated. Then, the display panel 100 receives the vibration of the bobbin ring 214a to generate the sound (HFS) in the mid- and high-frequency region, and the high-frequency sound (HFS) is output to the front (FD) of the display panel 100 You can. Here, the first exciter 213a may be made of a material having low thermal conductivity while allowing magnetic flux to pass therethrough. For example, the first exciter 213a is a cylindrical structure formed of a material processed from pulp or paper, aluminum or magnesium or an alloy thereof, synthetic resin such as polypropylene, or polyamide-based fiber. Can be

In addition, the first exciter 213a may further include a coil wound on the outer circumferential surface of the first exciter, and may receive a current for generating sound through the coil. Here, the coil may be represented by a voice coil or the like. When a current for generating sound is applied to the coil, the first exciter 213a is first according to Fleming's left-hand law based on the applied magnetic field formed around the coil and the external magnetic field formed around the first magnet 211a. It can vibrate while being guided by the damper 215a. For example, the magnetic flux generated by the magnetic field may flow along the closed loop connected to the coil, the lower frame 216a, the first magnet 211a, the first plate 212a, and the coil. Accordingly, the first exciter 213a is vibrated while being guided by the first damper 215a to transmit vibration to the display panel 100.

The bobbin ring 214a is interposed between the first exciter 213a and the display panel 100 to transmit vibration of the first exciter 213a to the display panel 100. In addition, the bobbin ring 214a may adhere the first exciter 213a to the rear surface of the display panel 100. For example, the bobbin ring 214a may be implemented as a double-sided tape, but is not limited thereto. In addition, the bobbin ring 214a effectively blocks the heat generated by the first exciter 213a from being transmitted to the display panel 100, while effectively suppressing the vibration of the first exciter 213a to the display panel 100. Can deliver.

The first damper 215a is disposed between the first exciter 213a and the second plate 212b to guide vibrations of the first exciter 213a and the bobbin ring 214a. The first damper 215a has a corrugated structure between one end and the other end thereof, and can contract and relax the vibration of the bobbin ring 214a while contracting and relaxing according to the vibration of the bobbin ring 214a. Accordingly, the first damper 215a is connected between the first exciter 213a and the second plate 212b, thereby limiting the vibration distance of the bobbin ring 214a through a restoring force. For example, when the bobbin ring 214a vibrates over a certain distance or vibrates below a certain distance, the bobbin ring 214a may return to its original position by the restoring force of the first damper 215a. In addition, the first damper 215a may be expressed in other terms, such as a spider, a suspension, or an edge.

According to an example, the first sound generating module may be an actuator, a transducer, or an exciter, but is not limited thereto, and may be an audio device that outputs sound according to an electrical signal.

The second magnet 211a may be disposed on the lower frame 216a. For example, the second magnet 211a may be interposed between the second plate 212a and the lower frame 216a. The lower frame 216a and the second plate 212a may control magnetic flux generated in the second magnet 211a. Therefore, the second magnet 211a is surrounded by the lower frame 216a and the second plate 212a, so that the magnetic flux generated in the second magnet 211a is concentrated into the second exciter 213a and the leak magnetic flux This can be suppressed.

According to an example, the second magnet may have an annular shape including a hollow portion, and the first plate of the first sound generating module may be disposed in the hollow portion of the second magnet.

The second plate 212b is disposed on the top of the second magnet 211b, and may be spaced apart from the diaphragm 214b. The second magnet 211b and the second plate 212b are inserted into the inside of the second exciter 213b having a cylindrical shape, so that the outer circumferential surfaces of the second magnet 211b and the second plate 212b are made. 2 can be surrounded by an exciter (213b). Therefore, the second magnet 211b and the second plate 212b can guide the linear reciprocating motion of the second exciter 213b. Here, the second plate 212b may be represented as a center pole or pole pieces. According to an example, the second plate 212b may be formed of a magnetic material such as iron (Fe), thereby increasing the magnetic flux density formed through the second magnet 211b.

According to an example, the second plate may be an annular shape including a hollow portion, and the first plate of the first sound generating module may be disposed in the hollow portion of the second plate.

The second exciter 213b may surround the second plate 212b and be attached to the rear surface of the diaphragm 214b. For example, the second exciter 213b may surround the second magnet 211b and the second plate 212b. For example, when the current for generating sound is applied to the coil wound on the outer circumferential surface of the second exciter 213b, and a magnetic field is formed in the second sound generating module, the periphery of the diaphragm via the diaphragm 214b by the magnetic field The sound can be output by vibrating the air layer or the air gap of. Therefore, the front surface of the second exciter 213b is in contact with the diaphragm 214b, so that the second exciter 213b can vibrate the diaphragm 214b according to the application and non-application of current. Here, the second exciter 213b may be made of a material having low thermal conductivity while allowing magnetic flux to pass therethrough. For example, the second exciter 213b is a cylindrical structure formed of a material processed from pulp or paper, aluminum or magnesium or an alloy thereof, synthetic resin such as polypropylene, or polyamide-based fiber. Can be

According to an example, the second exciter 213b may have a cylindrical shape including a hollow portion, and the first exciter 213a of the first sound generating module may be spaced apart from the hollow portion of the second exciter 213b. Can be deployed.

In addition, the second exciter 213b may further include a coil wound on the outer circumferential surface of the second exciter, and may receive a current for generating sound through the coil. Here, the coil may be represented by a voice coil or the like. When a current for generating sound is applied to the coil, the second exciter 213b is second according to the law of Fleming's left hand based on the applied magnetic field formed around the coil and the external magnetic field formed around the second magnet 211b. It can be vibrated while being guided by the damper 215b. For example, the magnetic flux generated by the magnetic field may flow along the closed loop connected to the coil, the lower frame 216b, the second magnet 211b, the second plate 212b, and the coil again. Accordingly, the second exciter 213b may be vibrated while being guided by the second damper 215b to transmit vibration to the display panel 100.

The diaphragm 214b may be arranged side by side while being separated from the rear surface of the display panel 100, but is not limited thereto and may be provided in various shapes such as a cone shape. The vibration plate 214b may output vibration of the second exciter 213b to the rear of the display panel 100 through the first air gap and the second air gap. The diaphragm 214b is spaced apart from the rear surface of the display panel 100, so that heat generated in the bobbin 213c is prevented from being transmitted to the display panel 100.

According to an example, the vibration of the vibration plate 214b of the second sound generating module vibrates the first air gap AG1 located at the rear surface of the display panel and the second air gap AG2 in the sound generating device to generate low-frequency sound. (LFS), the sound generated in the first air gap may be discharged to the rear (RD) of the display panel through the second hole 320, and the sound generated in the second air gap may be a hole 217 in the lower frame ) To the rear of the display panel (RD).

According to an example, the diaphragm 214b may be provided in a shape including a hollow portion in the center portion, and the bobbin ring 214a of the first sound generating module may be disposed in the hollow portion of the diaphragm 214b.

The second damper 215b is disposed between the second exciter 213b and the side frame 216b to guide vibrations of the second exciter 213b and the diaphragm 214b. The second damper 215b has a corrugated structure between one end and the other end thereof, and can contract and relax the vibration of the diaphragm 214b while being contracted and relaxed according to the vibration of the diaphragm 214b. Therefore, the second damper 215b is connected between the second exciter 213b and the side frame 216b, thereby limiting the vibration distance of the diaphragm 214b through a restoring force. For example, when the vibrating plate 214b vibrates over a certain distance or vibrates below a certain distance, the vibrating plate 214b may return to its original position by the restoring force of the second damper 215b. In addition, the second damper 215b may be expressed in other terms, such as a spider, suspension, or edge.

According to an example, the second sound generating module includes a hollow portion, and the first sound generating module may be disposed in the hollow portion.

The second sound generating module may include a hollow portion penetrating the central axis in the vertical direction. The first sound generating module may be disposed in the hollow portion of the second sound generating module, and through this, the first sound generating module and the second sound generating module may be provided in a combined form with a single body. The hollow portion of the second sound generating module is at least one of the second magnet 211b, the second plate 212b, the second exciter 213b, the diaphragm 214b, and the second damper 215b of the second sound generating module. It can be formed in one.

According to an example, the first magnet of the first sound generating module and the second magnet of the second sound generating module may have magnetic fields in opposite directions.

The first sound generating module can directly vibrate the panel to output high-frequency sound to the front (FD) of the display panel, and the second sound generating module vibrates the first air gap and the second air gap to generate low-frequency sound. Can be output to the rear (RD) of the display panel, whereby the first sound generating module and the second sound generating module have magnetic fields in opposite directions, thereby vibrating the first sound generating module and the second sound generating module. Can be controlled independently.

The lower frame 216a may support the first magnet 211a of the first sound generating module and the second magnet 211b of the second sound generating module. The lower frame 216a includes a first plate 212a and a first 2 The magnetic flux formed through the first magnet 211a and the second magnet 211b together with the plate 212b is controlled to increase the magnetic flux density flowing through the first exciter 213a and the second exciter 213b. You can. Therefore, each of the lower frame 216a and the first plate 212a and the second plate 212b are disposed at the lower and upper ends of the first magnet 211a and the second magnet 211b, respectively, and the first magnet 211a. ) And the second magnet 211b and the magnetic flux density formed through the coil to increase the vibration characteristics. The lower frame 216a is not limited to the term, and may be expressed in other terms such as yoke.

The side frame 216b is coupled to and combined with the lower frame 216a, and may include at least one hole 217 for sound emission. The side frame 216b may include a fastening structure to be fastened through the fastening means such as the rear structure 300 and the femnut.

According to an example, the hole formed in the side frame 216b displays the low-level sound (LFS) generated by the diaphragm of the second sound generating module in the air gap existing inside the sound generating device of the display panel 100. It can be output to the rear (RD). Further, according to an example, the side frame 216b may be made of a conductive material to control the magnetic flux generated by the second magnet 211b. For example, the side frame 216b surrounds the second magnet 211b to be spaced apart, thereby concentrating the magnetic flux generated by the magnet member 223a into the second exciter 213b to suppress leakage magnetic flux. . The side frame 216b is not limited to the term, and may be expressed in other terms such as yoke.

The upper frame 216c may cover upper portions of the first sound generating module and the second sound generating module. In addition, the first sound generating module is a structure attached to the rear surface of the display panel, and the upper frame 216c may be formed to include an opening in the center.

The second sound generating module may generate sound in a lower range than the first sound generating module.

According to an example, the first sound generating module may be attached to the rear surface of the panel and vibrate the panel to output sound to the front (FD) of the panel. Here, as described above, the display panel is usually made of a material having high rigidity such as glass, and accordingly, due to the high rigidity, there is a limit in outputting the sound of the low-pitched region. Therefore, the first sound generating module can generate high-frequency sound (HFS).

According to an example, the second sound generating module is disposed spaced apart from the rear surface of the panel, and may output sound by vibrating the air layer around the diaphragm including the upper or lower diaphragm of the second sound generating module. The diaphragm of the second sound generating module is not fixed to the display panel, and can output sound regardless of the rigidity of the display panel. Accordingly, the second sound generating module may generate low-level sound (LFS) that the first sound generating module is difficult to reproduce.

The first sound generating module may be an actuator, and the second sound generating module may be a woofer.

According to an example, the first sound generating module may be an actuator or an exciter, but is not limited thereto, and may be an audio device that outputs sound according to an electrical signal. According to an example, the second sound generating module may correspond to a woofer, but is not limited to the term thereof, but may be a speaker module that vibrates a diaphragm to reproduce sound.

The second sound generating module includes a diaphragm spaced apart from the rear surface of the display panel, and the diaphragm may not physically contact the first sound generating unit.

According to an example, the diaphragm of the second sound generating module may output sound by vibrating the air layer in the periphery of the diaphragm including the upper side or the lower side of the diaphragm, and the sound output thereby may include low-range sound. At this time, the first sound generating unit may be attached to the rear surface of the display panel to vibrate the panel, and the first sound generating unit and the second sound generating unit may vibrate at different vibration modes or different frequencies. Therefore, the vibration plate of the second sound generating module may not physically contact each other to avoid interference with the first sound generating unit, whereby the second sound generating module is independent of the vibration of the first sound generating module and is independent Can work with

According to an example, the first sound generating module may output sound from the first sound band, the second sound generating module may output sound from the second sound band, and the sound of the first sound band is higher than that of the second sound band It may be the sound of. Accordingly, each of the first sound generating module and the second sound generating module may be driven independently by receiving different vibration signals, and accordingly, the display device according to an example of the present application may include the first sound generating module and the second sound It may include a first sound generating module driving unit and a second sound generating driving unit for separately controlling the generating module.

7A to 7B are a plan view, a side view, and a rear view according to an embodiment of the sound generating device. The sound generating device detached from the rear cover 300 has a bobbin ring 214a of the first sound generating module that directly contacts and vibrates the display panel 100 on the upper surface as shown in FIG. 7A and outputs high-frequency sound (HFS). It is arranged in the middle of the sound generating device. In addition, the diaphragm 214b and the second damper 215b of the second sound generating module that are spaced apart from the display panel 100 and make a low-frequency band (LFS) surround the bobbin ring 214a of the first sound generating module. Are arranged. The sound generating device may be modularized in a form coupled to the inside of the square shape speaker box 400. The shape of the speaker box 400 is not limited thereto. A vent hole 410 for escaping the sound of the low-frequency band LFS generated by the second sound generating module may be disposed in the speaker box 400 in the area adjacent to the sound generating device. The ventilation hole 410 may be arranged in various positions in various shapes in consideration of the acoustic characteristics of the low-end band (LFS). Referring to the side view, it can be seen that the bobbin ring 214a and the diaphragm 214b for contacting the display panel 100 are projected over the surface of the speaker box 400. Referring to the rear view, the lower frame 216a of the sound generating device coupled to the speaker box 400 may be exposed. In addition, a vent hole 410 for escaping the sound of the low-end band (LFS) disposed in the front view may be disposed in the rear of the speaker box 400, and the speaker box 400 covers the rear of the display panel 100. A groove 420 for fixing to the 300 may be disposed.

8 is a perspective view of a display device according to another example of the present application, and FIG. 9 is a view showing sound output of a display device according to another example of the present application.

8 to 9, a display device according to another example of the present application includes a display panel 100 displaying an image, a rear structure 300 supporting a rear surface of the display panel, a display panel 100 and a rear structure Between 300, the first sound generating device 210, the second sound generating device 220, the third sound generating device 230, the fourth sound generating device 240, and the fifth sound generating device 250 Can be placed. The first and second sound generating devices include a first sound generating module that can be disposed in a lower region and attached to the rear surface of the display panel, and a second sound generating module that is spaced apart from the rear surface of the display panel. The third to fifth sound generating devices may be disposed in an upper region of the display panel, and may be actuators that directly vibrate the rear surface of the display panel.

The display device according to another example of the present application may have an acoustic characteristic of 5.1 channels. According to an example, the display panel 100 according to the present application may output high-frequency sound (HFS) that is independently controlled in 5 regions in front, and in 2 regions in the rear of the display panel 100. LFS can be output.

10A to 10G are rear views of a display device according to another example of the present application. The partition member 600 and the lower right that divide the display panel 100 into a lower right area (LRA), a lower left area (LLA), an upper center area (UCA), an upper right area (URA), and an upper left area (ULA). The first sound generating device 210 and the second sound generating device are disposed in each of the area LLA, the lower left area LLA, the upper center area UCA, the upper right area URA, and the upper left area ULA, respectively. 220, a third sound generating device 230, a fourth sound generating device 240, and a fifth sound generating device 250. The partition member 600 may be interposed between the display panel 100 and the back cover 300. According to an example, the partition member 600 may surround each of the first sound generating device to the second sound generating device, and the partition member 600 includes the first sound generating device 210 and the second sound generating device ( 220), the third sound generating device 230, the fourth sound generating device 240, and the fifth sound generating device 250, respectively, may be disposed. Here, the first to fifth sound generating devices can independently vibrate each disposed area, and prevent interference of neighboring areas or sound generating devices by the partition member 600. Accordingly, the partition member 600 is in the lower right area LLA, the lower left area LLA, the upper center area UCA, the upper right area URA and the upper left area ULA of the display panel 100, respectively. Interference between generated sounds can be prevented. The partition member 600 may include first to eighth partition members 610, 620, 630, 640, 650, 660, 670, and 680, and the first to eighth partition members 610, 620, 630, The 640, 650, 660, 670, and 680 displays the display panel in the lower right area (LRA), lower left area (LLA), upper center area (UCA), upper right area (URA), and upper left area (ULA), respectively. It can be formed in a surrounding structure.

The second partition member 620, the third partition member 630, the fifth partition member 650, and the eighth partition member 680 are areas of the display panel through which sound generated by the first sound generating device is output. Defined, the second partition member 620, the fourth partition member 640, the fifth partition member 650, and the eighth partition member 680, the sound generated by the second sound generating device is output The area of the display panel can be defined. The first partition member 610, the second partition member 620, the sixth partition member 660, and the seventh partition member 670 display areas of the display panel through which sounds generated by the third sound generating device are output. Can be defined. The first partition member 610, the second partition member 620, the fifth partition member 650, and the seventh partition member 670 define an area of the display panel through which sound generated by the third sound generating device is output. can do. The first partition member 610, the second partition member 620, the fourth partition member 640, and the sixth partition member 660 are areas of the display panel through which sound generated by the fifth sound generating device is output. Can be defined. The sound waves generated by the vibration of the display panel 100 by the sound generating device proceed while spreading radially from the center of the sound generating device. This sound wave can be referred to as a progressive wave. When this traveling wave meets at one side of the partition member 600, it is reflected by the partition member 600 to form a reflected wave traveling in the opposite direction to the traveling wave. This reflected wave overlaps and interferes with the traveling wave, so that the overlapped sound waves do not progress and form a standing wave standing at a certain position. The sound pressure may be reduced by this standing wave and the sound output characteristics may be deteriorated. Accordingly, in order to reduce the sound pressure reduction phenomenon caused by standing waves generated by interference between the reflected wave and the traveling wave, a bent portion may be formed in the partition member 600. In addition, standing waves that cause a decrease in sound pressure are generated at a large number of points of the traveling wave and the reflected wave. Therefore, the vent portion may be disposed at a position where the sound wave reaching from the sound generating device is largest. 10A to 10G, it can be seen that various types of vent parts are disposed in the first sound generating device 210 and the fifth sound generating device 250. For example, a sound generating device is provided to the partition member 600 surrounding the third sound generating device 230, the fourth sound generating device 240, and the fifth sound generating device 250 to generate high-frequency (HFS) sound. The bent portion may be vertically arranged to align with the center of the. In addition, the first sound generating device 210 and the second sound generating device 210 that simultaneously generate high-frequency (HFS) sound and low-frequency (LFS) sound also generate sound in the partition member 600 surrounding the sound generating device. A vent portion vertically aligned with the center of the device may be arranged. For this acoustic performance, a number of exciters constituting the sound generating device must each have a thickness of a certain length or more, which may be a factor that hinders the design of a clean back on the back of the display panel. The average thickness of the exciter used for sufficient sound output may be about 16 mm. When these sound generating devices are placed in the upper left area (ULA) and upper right area (URA) of the display panel, the rear appearance of the final display product It may be as bumpy as the thickness of the sound generating device. Exciters to be placed in the upper central area (UCA) and upper left and right areas (ULA, URA) to make the product back into a smooth clean back can place products with relatively thin thickness. A thin product with a thickness of about 3 mm can be placed, and at least two exciters can be placed adjacent to each other to compensate for the decrease in sound output caused by the thinned exciter thickness. Although not illustrated in FIGS. 10A to 10G, the third sound generating device 230 and the fourth sound generating device 240 are disposed in the upper center area UCA, the upper left area ULA, and the upper right area URA. For example, the fifth sound generating device 250 may arrange at least two exciters having a thin thickness for a clean back design of the rear appearance of the final display product. 10A to 10C, a third sound generating device 230 disposed in the upper central area UCA of the rear surface of the display panel 100 is adjacent to the upper right area URA and the upper left area ULA, respectively. It can be seen that the fourth sound generating device 240 and the fifth sound generating device 250 are arranged on the same line in the horizontal direction. However, referring to FIGS. 10D to 10G, the fourth sound generating device 240 and the fifth sound adjacent to the third sound generating device 230 disposed in the center area UCA of the upper central area among the back surfaces of the display panel 100 It can be seen that the generators 250 are not aligned on the same line in the horizontal direction, but the center lines are spaced apart. Due to this separation, the sound generated by the fourth sound generating device 240 and the fifth sound generating device 250 on both sides of the display panel 100 and the third from the upper middle (UCA) of the display panel 100 The direction of the sound generated by the sound generating device 230 may be different. For example, when the third sound generating device 230 disposed in the upper middle area UCA of the display panel is disposed below the alignment reference lines of the fourth and fifth sound generating devices 240 and 250, the third sound Due to the interaction between the generator 230 and the fourth and fifth acoustic generators, the sound generated by the fourth and fifth acoustic generators spreads to the left and right sides of the front panel 100, and the third acoustic generator The sound generated by the device spreads in the vertical direction of the front portion of the display panel 100 so that the overall sound may have a surround stereoscopic effect.

11 to 12, a display device according to another example of the present application includes a display panel 100 displaying an image, a rear structure 300 supporting a rear surface of the display panel, a display panel 100 and a rear structure Between 300, the first sound generating device 210, the second sound generating device 220, the third sound generating device 230, the fourth sound generating device 240, and the fifth sound generating device 250 Can be placed. The first, second, and third sound generating devices may be disposed in a lower region of the display panel. The first and second sound generating devices include a first sound generating module attached to a rear surface of the display panel, and a second sound generating module spaced apart from the rear surface of the display panel, and the fourth to fifth sound generating devices May be disposed in the upper region of the display panel, and may be an actuator that directly vibrates the rear surface of the display panel.

The display device according to another example of the present application may have an acoustic characteristic of 5.1 channels. According to an example, the display panel 100 according to the present application may output high-frequency sound (HFS) that is independently controlled in 5 regions in front, and in 2 regions in the rear of the display panel 100. LFS can be output.

13A to 10I are rear views of a display device according to another example of the present application. The partition member 600 and the lower right that divide the display panel 100 into a lower right area LLA, a lower left area LLA, a lower center area LCA, an upper right area URA and an upper left area ULA. The first sound generating device 210 and the second sound generating device are disposed in the area LLA, the lower left area LLA, the lower center area LCA, the upper right area URA, and the upper left area ULA, respectively. 220, a third sound generating device 230, a fourth sound generating device 240, and a fifth sound generating device 250. The partition member 600 may be interposed between the display panel 100 and the back cover 300. According to an example, the partition member 600 may surround each of the first sound generating device to the second sound generating device, and the partition member 600 includes the first sound generating device 210 and the second sound generating device ( 220), the third sound generating device 230, the fourth sound generating device 240, and the fifth sound generating device 250, respectively, may be disposed. Here, the first to fifth sound generating devices can independently vibrate each disposed area, and prevent interference of neighboring areas or sound generating devices by the partition member 600. Therefore, the partition member 600 is in the lower right area LLA, the lower left area LLA, the lower center area LCA, the upper right area URA and the upper left area ULA of the display panel 100, respectively. Interference between generated sounds can be prevented. The partition member 600 may include first to ninth partition members 610, 620, 630, 640, 650, 660, 670, 680, and 690, and the first to ninth partition members 610, 620, The 630, 640, 650, 660, 670, 680, and 690 displays the display panel in the lower right area (LRA), lower left area (LLA), upper center area (UCA), upper right area (URA) and upper left area ( ULA) may be formed in a structure surrounding each. The second partition member 620, the third partition member 630, the fifth partition member 650, and the ninth partition member 690 define an area of the display panel through which sound generated by the first sound generating device is output. The second partition member 620, the third partition member 630, the fourth partition member 640, and the eighth partition member 680 are display panels through which sound generated by the second sound generating device is output. You can define the domain of The second partition member 620, the third partition member 630, the eighth partition member 680, and the ninth partition member 690 display an area of the display panel through which sound generated by the third sound generating device is output. Can be defined. The first partition member 610, the second partition member 620, the fifth partition member 650, and the seventh partition member 670 define an area of the display panel through which sound generated by the third sound generating device is output. can do. The first partition member 610, the second partition member 620, the fourth partition member 640, and the sixth partition member 660 are areas of the display panel through which sound generated by the fifth sound generating device is output. Can be defined. 10A to 10G, the principle of generation of standing waves will be omitted. A vent portion may be formed in the partition member 600 to reduce a sound pressure reduction phenomenon caused by standing waves generated by interference between the reflected wave and the traveling wave. In addition, standing waves that cause a decrease in sound pressure are generated at a large number of points of the traveling wave and the reflected wave. Therefore, the vent portion may be disposed at a position where the sound wave reaching from the sound generating device is largest. 10A to 10G, it can be seen that various types of vent parts are disposed in the first sound generating device 210 and the fifth sound generating device 250. For example, a sound generating device is provided to the partition member 600 surrounding the third sound generating device 230, the fourth sound generating device 240, and the fifth sound generating device 250 to generate high-frequency (HFS) sound. The bent portion may be vertically arranged to align with the center of the. In addition, the first sound generating device 210 and the second sound generating device 220 that simultaneously generate high-frequency (HFS) sound and low-frequency (LFS) sound also generate sound in the partition member 600 surrounding the sound generating device. A vent portion vertically aligned with the center of the device may be arranged. Although not illustrated in FIGS. 13A to 13I, the fourth sound generating device 240 and the fifth sound generating device 250 disposed in the upper left area (ULA) and the upper right area (URA) are the rear appearance of the final display product. For the clean back design, at least two thin exciters can be arranged. Description of this was previously described in FIG. 10 and can be omitted. 13A to 13E, a third sound generating device 230 disposed in the lower central area LCA of the rear surface of the display panel 100 is located in the adjacent lower right area LLA and lower left area LLA, respectively. It can be seen that the arranged first sound generating device 210 and the second sound generating device 220 are aligned on the same line in the horizontal direction. However, referring to FIGS. 13F to 13I, the first sound generating device 210 and the second sound generating device adjacent to the third sound generating device 230 disposed in the lower central area LCA of the rear surface of the display panel 100 Not aligned on the same line in the horizontal direction to 220, the center line may be arranged spaced apart. Due to this separation, the sound generated by the first sound generating device 210 and the second sound generating device 220 on both sides of the display panel 100 and the third from the lower middle (LCA) of the display panel 100 The traveling direction of the sound generated by the sound generating device 230 may be changed. For example, when the third sound generating device 230 disposed in the upper middle area UCA of the display panel is disposed below the alignment reference lines of the fourth and fifth sound generating devices 240 and 250, the third sound Due to the interaction between the generator 230 and the fourth and fifth acoustic generators, the sound generated by the fourth and fifth acoustic generators spreads to the left and right sides of the front panel 100, and the third acoustic generator The sound generated by the device spreads in the vertical direction of the front portion of the display panel 100 so that the overall sound may have a surround stereoscopic effect.

14A is a cross-sectional view taken along line I-I 'of FIG. 10A.

Referring to FIG. 14A, the third to fifth sound generating devices may be attached to the display panel 100 and may be exciters that directly vibrate the display panel to generate high-frequency sound. As described above, the third to fifth sound generating devices 230, 240, and 250 correspond to the upper central area UCA, upper right area URA, and upper left area ULA of the display panel, respectively. Separate high-pitched sounds can be output to the center area UCA, the upper right area URA, and the upper left area ULA, respectively. The rear cover 300 supports the exciters and side surfaces of the display panel 100, and the partition members 640 and 650 disposed on the outer side of the display panel 100 and the rear cover 300 having a step shape The upper right area (URA) and the upper left area (ULA) are completely sealed by bonding or combination of to output independent sounds.

14B is a cross-sectional view taken along line II-II 'of FIG. 13B.

Referring to FIG. 14B, the first to third sound generating devices are attached to the display panel 100, and include an exciter that directly vibrates the display panel to generate high-frequency sound, and the first to second sound generating devices are It may be of a hybrid type that further includes a woofer that is spaced apart from the display panel 100 and generates low-range sound. As described above, the first to third sound generating devices 210, 220, and 230 may correspond to the lower right area LLA, the lower center area LCA, and the lower left area LLA of the display panel, respectively. . Hybrid type exciters are arranged in the lower right area (LRA) and lower left area (LLA) to output high and low ranges, and exciters are arranged in the lower center area (LCA) to produce high-frequency sound. Can output A speaker box 400 for improving bass performance may be coupled to a side of a woofer outputting a low-pitched tone band. The rear cover 300 supports the exciters and side surfaces of the display panel 100, and the partition members 640 and 650 disposed on the outer side of the display panel 100 and the rear cover 300 having a step shape The lower right area LLA and the lower left area LLA are completely sealed by bonding or coupling to output independent sounds.

15A and 15B are cross-sectional views of an acoustic generator according to an example.

The sound generating device may be classified into a first structure in which a magnet is disposed outside the coil and a second structure in which the magnet is disposed inside the coil. The first structure may be expressed as a dynamic type or an external magnetic type, and the second structure may be expressed as a micro type or an internal magnetic type.

Fig. 15A shows the first structure, and Fig. 15B shows the second structure.

Referring to Figure 15a, the sound generating device 230 is a first plate 232, a magnet 231 on the first plate 232, a center pole 233 on the plate, center pole 233 around It may include a bobbin 234 disposed on, and a coil 235 wound around the bobbin 234. For example, a magnet 231 is provided on the first plate 232, and a second plate 236 is provided on the magnet 231. The first plate 232 and the second plate 236 may fix the sound generating device 233 to the rear cover 300 while supporting the magnet 231. Accordingly, the first plate 232 may be fixed to a support hole formed in the rear cover 300, and the magnet 231 positioned between the first plate 232 and the second plate 236 may be fixed or supported. You can.

At least one of the first plate 232 and the second plate 236 may be made of a magnetic material such as iron (Fe). The plate is not limited to this term, and may be expressed in other terms such as yoke. The magnet 231 may use a sintered magnet such as barium ferrite, the material is ferric trioxide (Fe ₂ O ₃ ), barium carbonate (BaCO ₃ ), neodymium magnet, strontium ferrite with improved magnetic components, Aluminum (Al), nickel (Ni), cobalt (Co) alloy cast magnet, etc. may be used, but is not limited thereto. The neodymium magnet can be, for example, neodymium-iron-boron (Nd-FeB).

The frame 237 is disposed on the outer side of the first plate 232 and on the second plate 236. The center pole 233 is disposed in the central region of the first plate 232. The center pole 233 may also be referred to as a pole piece. In addition, the center pole 233 and the first plate 232 may be integrally formed.

Then, the bobbin 234 surrounding the center pole 233 is disposed. A coil 235 is wound around the lower portion of the bobbin 234, and a current for generating sound is applied to the coil 235. The bobbin 234 may be an annular structure formed of paper or aluminum sheet, or the like, and the coil 235 may be wound around a certain area under the bobbin 234. The bobbin 234 and the coil 235 may be combined to be expressed as a voice coil. In addition, a damper 238 may be disposed between the upper portion of the bobbin 234 and the frame 237. The damper may be expressed in other terms such as edge.

15B is a view showing a second structure in which the magnet is disposed inside the coil.

15B, the sound generating device 230 includes a magnet 231 on the first plate 232, a center pole 233 on the magnet 231, a magnet 231, and a center pole 233. It may include a bobbin 234 disposed around, and a coil 235 wound around the bobbin 234.

For example, the first plate 232 may be fixed to a support hole formed in the rear cover 300. The magnet 231 is disposed on the first plate 232, and the center pole 233 is disposed on the magnet 231. The bobbin 234 is disposed to surround the magnet 231 and the center pole 233, and the coil 235 is wound around the bobbin 234.

The second plate 236 is disposed around the outer periphery of the first plate 232, and the frame 237 is disposed outside the second plate 236. Then, a damper 238 is disposed between the frame 237 and the bobbin. The acoustic generator of the second structure has an advantage that the leakage flux is small and the overall size can be reduced compared to the first structure in which the magnet is disposed on the outside.

The third to fifth sound generating devices are not limited to the structures shown in FIGS. 15A and 15B, and other types of sound generating devices capable of generating sound by vibrating the display panel may be used.

16A to 16B are rear views of a display device according to another example of the present application.

Referring to FIG. 16A, the first sound generating device and the second sound generating device are provided with a first sound generating device and a second sound generating device in a form in which a bass reflection duct 440 is formed in a speaker box to improve bass sound. Can be combined. The bass generated from the diaphragm of the second sound generating device may be transmitted through the bass reflection duct after being reflected in the first air gap AG1, the second air gap AG1, and the speaker box 400, so that additional bass sounds are generated. Good regeneration may be possible.

Referring to FIG. 16B, unlike FIG. 16A, a third sound generating device may be disposed between the first sound generating device and the second sound generating device in the lower region. This arrangement outputs general high-end sound from the first, second, fourth, and fifth sound generating devices 210, 220, 240, 250, and low-end sound from the first to second sound generating devices 210, 220 ). At this time, the third sound generating apparatus 230 has an advantage that viewers can be more immersed in the screen by utilizing it to express the important sound of the screen or the voice of the main character.

17 is a graph showing sound pressure characteristics of a display device according to an example of the present application. 15 is a sound pressure characteristic of a hybrid sound generator (Hybrid Sound Generating Module) including a first sound generating module and a second sound generating module with improved low-band sound output characteristics according to an example of the present application It is shown in FIG. 15, and the dashed line in FIG. 15 shows the sound pressure characteristics of a general sound generator (Normal Sound Generating Module) that directly vibrates the display panel to generate sound. In FIG. 13, the horizontal axis represents frequency (Hz), and the vertical axis represents sound pressure level (SPL).

Referring to FIG. 17, the hybrid sound generator (Hybrid Sound Generating Module) and the general sound generator (Normal Sound Generating Module) have similar sound pressure characteristics in the mid- to high-frequency range of 200 Hz or higher, while the sound pressure characteristics in the low-frequency range below 200 Hz are hybrid sound. It can be seen that the generator (Hybrid Sound Generating Module) is significantly higher than the general sound generator (Normal Sound Generating Module). In particular, the sound pressure characteristic measured at 100 Hz can be seen that the hybrid sound generator (Hybrid Sound Generating Module) shows a value higher than d, which is 60 dB, which is the maximum sound pressure of the normal sound generator (Normal Sound Generating Module), where d is For example, it can be seen that it is about 15dB high.

A display device according to an exemplary embodiment of the present specification includes a liquid crystal display device (LCD), a field emission display device (FED), and an organic light emitting display device (OLED), It may include a quantum dot display device (Quantum Dot Display Device).

The display device according to the exemplary embodiment of the present specification is a laptop computer, a television, a computer monitor, an automotive display, or another vehicle that is a complete product or a final product including an LCM, an OLED module, and the like. It may also include a set electronic device or set device, such as an electronic display, such as a smartphone or electronic pad, including a form, etc. You can.

The display device according to the embodiment of the present specification may be described as follows.

The display device of the present specification includes a display panel for displaying an image, a sound generating device disposed on the rear of the display panel, and a rear cover disposed on the rear of the display panel to support the display panel, and between the rear and back covers of the display panel. A partition member disposed to partition the display panel into a first area, a second area, a third area, a fourth area, and a fifth area, supported by a rear cover, and attached to the rear surface of the display panel to vibrate the display panel And a first sound generator, a second sound generator, a third sound generator, a fourth sound generator, and a fifth sound generator, the first sound generator, the second sound generator, and The 3 sound generator, the 4th sound generator, and the 5th sound generator may be respectively disposed in the first area, the second area, the third area, the fourth area, and the fifth area. have.

In a display device according to some exemplary embodiments of the present specification, a sound generating device may have a sound output characteristic in the form of 5.1 channels.

A display device according to some embodiments of the present specification includes a first sound generator and a second sound generator including a hybrid exciter, and a third sound generator, a fourth sound generator, and a fifth sound generator are exciters It may include.

In the display device according to some embodiments of the present specification, the partition member includes a bent portion, and the first sound generating device and the second sound generating device may be vertically aligned with the bent portion.

A display device according to some exemplary embodiments of the present specification includes a first area and a second area below a display panel, and a third area, a fourth area, and a fifth area are above the first area and the second area. Can be placed on.

The display device according to some embodiments of the present specification may be arranged in a horizontal direction in the third sound generator, the fourth sound generator, and the fifth sound generator.

In the display device according to some exemplary embodiments of the present specification, the fourth sound generating device and the fifth sound generating device are arranged in a first horizontal direction, and the third sound generating device may be arranged spaced apart from a reference line in the first horizontal direction. have.

The display device according to some embodiments of the present specification includes a first sound generator, a second sound generator, and a third sound generator at the bottom of the display panel, and the fourth sound generator and the fifth sound generator are first sound. It may be disposed on the upper portion of the display panel, which is above the generator, the second acoustic generator, and the third acoustic generator.

A display device according to some embodiments of the present specification includes a first sound generator and a second sound generator including a hybrid exciter, and a third sound generator, a fourth sound generator, and a fifth sound generator are exciters It may include.

According to some embodiments of the present disclosure, the third sound generating device includes an exciter transmitting human voice, and the fourth sound generating device and the fifth sound generating device include an exciter transmitting sound of an object. It can contain.

The display device of the present specification includes a display panel for displaying an image, a sound generating device disposed on the rear of the display panel, and a rear cover disposed on the rear of the display panel to support the display panel, and between the rear and back covers of the display panel. A partition member disposed to partition the display panel into a first area, a second area, a third area, a fourth area, and a fifth area, the sound generating device includes: a first sound generating module attached to a rear surface of the display panel; And a second sound generating module spaced apart from the rear surface of the display panel and including a frame capable of receiving the first sound generating module and the second sound generating module.

The display device according to some exemplary embodiments of the present specification may further include a speaker box accommodating a frame.

In the display device according to some exemplary embodiments of the present specification, the speaker box may be in the first area and the second area.

In a display device according to some exemplary embodiments of the present specification, a partition member separating a first region and a second region may include a bent portion in which at least one surface is bent toward the first sound generating module and the second sound generating module. .

In the display device according to some exemplary embodiments of the present specification, a frame accommodating a first sound generating module and a second sound generating module are disposed in the first area and the second area, respectively, and the third area, the fourth area, and the first area. A third sound generating module disposed in the five regions may be further included.

A display device according to some embodiments of the present specification includes a first area and a second area below the display panel, and a third area, a fourth area, and a fifth area are above the first area and the second area. It can be placed on top.

In the display device according to some exemplary embodiments of the present specification, the first area, the second area, and the third area are located under the display panel, and the fourth area and the fifth area are of the first area, the second area, and the third area. It may be disposed on the upper portion of the display panel.

In a display device according to some exemplary embodiments of the present specification, a frame disposed in the first region and the second region and a third sound generating module disposed in the third region may be aligned based on the same horizontal extension line.

In a display device according to some exemplary embodiments of the present specification, frames disposed in the first area and the second area are aligned in a horizontal direction, and the third sound generating module disposed in the third area is a fixed distance from the horizontal extension line. It can be spaced apart.

 The display device according to some exemplary embodiments of the present specification may be arranged such that the first sound generating module and the second sound generating module are vertically aligned with the ends of the bent portion.

The embodiments of the present invention have been described in more detail with reference to the accompanying drawings, but the present invention is not necessarily limited to these embodiments, and may be variously modified without departing from the technical spirit of the present invention. . Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of protection of the present invention should be interpreted by the claims, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

100: display panel
210: sound generating device, first sound generating device
220: second sound generating device
230: third sound generating device
240: fourth sound generating device
250: fifth sound generating device
300: rear cover
400: speaker box
600: no partition

Claims (20)

A display panel for displaying an image;
A sound generating device disposed on the rear side of the display panel;
A rear cover disposed on the rear surface of the display panel to support the display panel;
A partition member disposed between the rear surface of the display panel and the rear cover to partition the display panel into a first area, a second area, a third area, a fourth area, and a fifth area; And
It includes a first sound generator, a second sound generator, a third sound generator, a fourth sound generator, and a fifth sound generator that is attached to the rear surface of the display panel and is arranged to vibrate the display panel. ,
The first sound generator, the second sound generator, the third sound generator, the fourth sound generator, and the fifth sound generator are the first area, the second area, and the third area , The fourth area and the fifth area, respectively, the display device. According to claim 1,
The sound generating device has a 5.1 channel type sound output characteristics, the display device. According to claim 1,
The first sound generating device and the second sound generating device include a hybrid exciter,
The third sound generator, the fourth sound generator, and the fifth sound generator include an exciter. According to claim 3,
The partition member includes a bent portion, and the first sound generator and the second sound generator are vertically aligned with the bent portion. According to claim 3,
The first area and the second area are below the display panel, and the third area, the fourth area, and the fifth area are disposed on the display panel above the first area and the second area. , Display device. The method of claim 5,
The third sound generator, the fourth sound generator, and the fifth sound generator are horizontally aligned, the display device. The method of claim 5,
The fourth sound generator and the fifth sound generator are arranged in a first horizontal direction, and the third sound generator is spaced apart from a reference line in the first horizontal direction. According to claim 1,
The first sound generator, the second sound generator, and the third sound generator are located below the display panel, and the fourth sound generator and the fifth sound generator are the first sound generator, the A display device disposed on an upper portion of the second sound generating device and the display panel that is above the third sound generating device. The method of claim 8,
The first sound generating device and the second sound generating device include a hybrid exciter,
The third sound generator, the fourth sound generator, and the fifth sound generator include an exciter. The method of claim 8,
The third sound generating device includes an exciter for transmitting human voice, and the fourth sound generating device and the fifth sound generating device include an exciter for transmitting the sound of an object. A display panel for displaying an image;
A sound generating device disposed on the rear side of the display panel;
A rear cover disposed on the rear surface of the display panel to support the display panel; And
And a partition member disposed between the rear surface of the display panel and the rear cover to partition the display panel into a first area, a second area, a third area, a fourth area, and a fifth area,
The sound generating device,
A first sound generating module attached to a rear surface of the display panel;
A second sound generating module spaced apart from the rear surface of the display panel; And a frame that can accommodate the first sound generating module and the second sound generating module. The method of claim 11,
And a speaker box accommodating the frame. The method of claim 12,
The speaker box is in the first area and the second area, the display device. The method of claim 11,
The partition member separating the first region and the second region includes a bent portion in which at least one surface is bent toward the first sound generating module and the second sound generating module. The method of claim 11,
Frames accommodating the first sound generating module and the second sound generating module are disposed in the first area and the second area, respectively.
And a third sound generating module disposed in the third area, the fourth area, and the fifth area. The method of claim 15,
The first area and the second area are below the display panel, and the third area, the fourth area, and the fifth area are disposed on the display panel above the first area and the second area. , Display device. The method of claim 15,
The first area, the second area and the third area are below the display panel, and the fourth area and the fifth area are above the first area, the second area, and the third area. A display device disposed on the top of the display panel. The method of claim 17,
The frame arranged in the first area and the second area and the third sound generating module arranged in the third area are aligned with respect to an extension line in the same horizontal direction. The method of claim 17,
The frames arranged in the first region and the second region are aligned in a horizontal direction, and the third sound generating module disposed in the third region is spaced apart at a constant distance from the extension line in the horizontal direction, Display device. The method of claim 14,
The first sound generating module and the second sound generating module are arranged so as to be vertically aligned with the ends of the bent portion.

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