KR20170135673A - Display apparatus - Google Patents

Abstract

A display device according to an embodiment of the present invention includes a display panel, a support member which is arranged on a rear side or a lateral side of the display panel and supports the display panel, and a sound generating device supported by the support member and arranged to be adjacent to the display panel. The sound generating device vibrates the display panel to generate a sound, and the support member includes a planar structure member. Accordingly, the sound generated in the display device is generated on the front side of the display panel so that the progress direction of the sound becomes the front side of the display panel when a user watches an image, thereby improving sound quality.

Description

DISPLAY APPARATUS

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to a display device capable of vibrating a display panel to generate sound.

As the era of informationization has entered the full-scale information age, the field of display devices for visually displaying electrical information signals has rapidly developed, and various display devices having excellent performance of thinning, lightening, and low power consumption have been developed.

Specific examples of the display device include a liquid crystal display device (LCD), a field emission display device (FED), and an organic light emitting display device (OLED).

A liquid crystal contained in a liquid crystal display device is a substance which is in an intermediate state between a liquid and a solid. It has both a liquid property such as fluidity and a solid property such as a long range order. Liquid crystal displays have optical anisotropy, which has a long and narrow molecular structure and has a directional arrangement, and a polarizing property that changes the direction of molecular alignment according to its size when placed in an electric field. Liquid crystal displays use optical anisotropy and polarization properties of liquid crystals.

The alignment direction of the liquid crystal molecules is changed by the electric field applied to the two electrodes included in the liquid crystal display device to generate a difference in light transmittance. The difference in transmittance due to the liquid crystal arrangement is reflected in the color combination realized while the light supplied from the light source included in the liquid crystal display passes through the color filter to display the image.

Recently, an organic light emitting display device which is widely known is a self light emitting type display device, which does not require a separate light source and can be manufactured in a light weight and thin shape, and is excellent in terms of power consumption by low voltage driving, , A viewing angle, and a contrast ratio (CR).

An organic light emitting diode (OLED) display device is provided with an emission layer (EML) using an organic material between two electrodes made of an anode and a cathode, injecting a hole in the anode into the light emitting layer, The injected electrons and holes are recombined with each other to form an exciton in the light emitting layer and emit light to display an image.

Generally, the display device displays images all on the display panel, but a separate speaker is provided to provide sound. When the speaker is installed on the display device, the direction of sound generated through the speaker is the rear of the display panel, which is not the front of the display panel on which the image is displayed, or the bottom of the display panel. There is a problem in that the viewer's immersion is interrupted.

The sound generated through the speaker proceeds to the rear of the display panel or to the bottom of the display panel, so that the sound quality may be deteriorated due to interference with sound reflected from the wall or the floor.

When a separate speaker is configured in the video set device including the display device, the speaker occupies a certain space, which may cause a restriction on design and layout.

The inventors of the present invention have recognized the above-mentioned problems and have found a new structure capable of enhancing the immersion of viewers while improving the sound quality by providing the front of the display panel in the direction of the sound when viewing the image without installing separate speakers Thereby inventing a display device.

The solutions according to the embodiments of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can 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, a support member disposed on a rear surface or a side surface of the display panel to support the display panel, and an acoustic generator supported by the support member and disposed adjacent to the display panel And the sound generating device vibrates the display panel to generate sound, and the supporting member includes a plate-shaped structural member.

A display device according to an embodiment of the present invention includes a display panel, a support member disposed on a rear surface or a side surface of the display panel to support the display panel, and an acoustic generator supported by the support member and disposed adjacent to the display panel And the sound generating device includes a cap member which vibrates the display panel to generate sound, and which is disposed on the top of the sound generating device.

A display device according to an embodiment of the present invention includes a sound generating device that generates sound by vibrating a display panel so that a sound generated in the display device is generated on the front surface of the display panel, It is possible to improve the sound quality while improving the immersion of the viewer.

The display device according to the embodiment of the present invention includes a sound generating device that generates sound by vibrating the display panel, so that it is unnecessary to add a separate speaker, so that the degree of freedom in arrangement of the speakers can be improved.

The display device according to the embodiment of the present invention can reduce the thickness of the display panel by fixing the supporting member and the sound generating device by using the nut and the screw formed in the supporting member.

The display device according to the embodiment of the present invention can improve the appearance of the display device by forming the first support member of glass or stainless steel.

The display device according to the embodiment of the present invention can constitute the first support member and the second support member so that the sound generating device can be brought into close contact with the front surface of the display panel by the thickness of the first support member, .

The display device according to the embodiment of the present invention can prevent a leakage of acoustic or reflective sound through the support hole of the support member and prevent the penetration of external foreign matter by constituting the cap member surrounding the outer frame of the sound generator .

The display device according to the embodiment of the present invention is characterized in that a heat radiation member of a thermally conductive material is disposed between a cap member surrounding the outer frame of the sound generator and the inner surface of the cap member and the outer frame of the sound generator, The heat can be discharged to the outside, so that damage to the display device due to heat can be prevented.

The display device according to the embodiment of the present invention can further dissipate the heat generated in the sound generating device to the outside by configuring the cap member surrounding the outer frame portion of the sound generating device and the hole at one side of the cap member, It is possible to prevent the display device from being damaged.

The display device according to the embodiment of the present invention can further prevent the acoustic leakage through the support hole by further constituting the bump material layer on the inner surface of the cap member.

The effects of the present specification are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

It is to be understood that the scope of the claims is not limited by what is described in the description of the invention,

1A and 1B are views showing a display device including an acoustic-wave generating device according to an embodiment of the present invention.
2A and 2B are cross-sectional views of an acoustical generator according to an embodiment of the present invention.
3A and 3B are diagrams for explaining contents of generating sound of the sound generating device according to the first structure of the embodiment of the present invention.
4A and 4B are diagrams for explaining contents of generating sound of the sound generating device according to the second structure of the embodiment of the present invention.
5A and 5B are views showing a display device including an acoustical generator according to another embodiment of the present invention.
FIG. 6 is a plan view showing a sound generator and a partition according to an embodiment of the present invention. FIG.
Figs. 7A and 7B are cross-sectional views of a coupling structure of a sound generator and a support member according to an embodiment of the present invention; Fig.
8 is a cross-sectional view of a coupling structure of an acoustical generator, a support member, and a cap member according to another embodiment of the present invention.
9A and 9B are a drawing and a cross-sectional view of a cap member according to an embodiment of the present invention.
10 is a graph showing acoustic output characteristics when the cap member according to the embodiment of the present invention is used.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Where the terms "comprises", "having", "done", and the like are used in this specification, other portions may be added unless "only" is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

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

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

In this specification, the display device may include a display device such as a liquid crystal module (LCM) or an organic light emitting diode (OLED) module including a display panel and a driver for driving the display panel. In addition, it is also possible to use an equipment display such as a notebook computer, a television, a computer monitor, an automotive display or other forms of vehicles, including an LCM and an OLED module, a smart phone or an electronic pad A set electronic device such as a mobile electronic device or a set device or a set device.

The display device in this specification may include a narrow display device such as an LCM, an OLED module and the like, and an application product including an LCM, an OLED module or the like, or a set device which is a final consumer device. In some cases, the LCM and the OLED module constituted by the display panel and the driving unit and the like may be represented by the narrow "display device", and the electronic device as the finished product including the LCM and the OLED module may be represented by the "set device" . For example, the display apparatus of the consultation includes a display panel of liquid crystal (LCD) or organic light emitting (OLED) and a source PCB which is a control section for driving the display panel, and the set apparatus is electrically connected to the source PCB, And a set PCB that is a set control unit that controls the entire system.

The display panel used in this embodiment may be any type of display panel such as a liquid crystal display panel, an organic light emitting (OLED) display panel, and an electroluminescent display panel, The present invention is not limited to a specific display panel capable of generating sound by being vibrated by the sound generating actuator of the embodiment. The display panel used in the display device according to the embodiment of the present invention is not limited to the shape and size of the display panel.

More specifically, when the display panel is a liquid crystal display panel, it includes a plurality of gate lines and data lines, and pixels formed at intersections of the gate lines and the data lines. An array substrate including a thin film transistor serving as a switching element for adjusting light transmittance in each pixel, an upper substrate including a color filter and / or a black matrix, and a liquid crystal layer formed between the array substrate and the upper substrate As shown in FIG.

When the display panel is an organic light emitting (OLED) display panel, it may include a plurality of gate lines and data lines, and pixels formed at intersections of the gate lines and the data lines. An array substrate including a thin film transistor which is a device for selectively applying a voltage to each pixel, an organic light emitting element (OLED) layer on the array substrate, and an encapsulating substrate Or an encapsulation substrate, or the like. The sealing substrate protects the thin film transistor, the organic light emitting element layer, and the like from external impact and can prevent water or oxygen from penetrating into the organic light emitting element layer. And, the layer formed on the array substrate may include an inorganic light emitting layer, for example, a nano-sized material layer, or the like.

The display panel may further include a backing such as a metal plate attached to the display panel. The present invention is not limited to the metal plate but may include other structures.

In this specification, the display panel including the sound generating device can be applied to a vehicle as a user interface module such as a central control panel in an automobile. For example, such a display panel can be implemented between the passengers of two front seats so that the vibration of the display panel is propagated toward the interior of the vehicle. Thus, the audio experience in the vehicle can be improved compared to having a speaker only on the side of the vehicle interior.

It is to be understood that each of the features of the various embodiments herein may be combined or combined with each other, partially or wholly, and technically various interlocking and driving are possible, and that the embodiments may be practiced independently of each other, It is possible.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1A is a diagram showing a display device including an acoustic-wave generating device according to an embodiment of the present invention; Fig.

Referring to FIG. 1A, a display panel 100 for displaying an image and an acoustic generator 200 for generating sound by vibrating the display panel may be included. At this time, the sound generator may be represented by an actuator, an excitor, or a transducer.

FIG. 1B is a cross-sectional view taken along the line I-I 'of FIG. 1A.

Referring to FIG. 1B, the display device may include a display panel 100, a sound generator 200, and a support member 300.

The supporting member 300 may be disposed on the rear surface or the side surface of the display panel 100 so as to support the display panel 100, 200 may be fixed to the support member 300 and disposed adjacent to the display panel 100.

The support member 300 may be, for example, a cover bottom. The display panel 100 may further include a middle cabinet that surrounds the side surface of the display panel 100 and is coupled to the cover bottom and receives one side edge of the display panel 100 to support the display panel 100. The support member 300 may include a cover bottom, or a cover bottom and a middle cabinet. However, the support member 300 may include a structure capable of supporting a rear surface or a side surface of the display panel 100, and the like.

The support member 300 may include a cover bottom, a plate bottom, a back cover, a base frame, a metal frame, a metal chassis, a chassis base, (Chassis base), m-chassis and so on.

The support member 300 may include any type of frame or plate-like structure disposed on the back surface of the display device as a support for supporting the display panel 100, and the like.

An adhesive member may be disposed on the edge of the support member 300 and the display panel 100. [ The adhesive member can be disposed at the edge of the support member 300, and adheres the display panel 100 and the support member 300 to each other. The bonding member may be a double-side tape, but is not limited thereto.

A partition 400 may further be provided between the supporting member 300 and the display panel 100. [ The partition 400 may include an air gap 500 or a space where sound is generated when the display panel 100 is vibrated by the sound generator 200.

The partition 400 may be referred to as an enclosure or a baffle, and is not limited to a term. The partition 400 may be the entire area of the four sides of the outer periphery of the display panel 100. [ The partition 400 may be a sealed structure or an unsealed structure, and the partition 500 may be a double-side tape.

2A and 2B are cross-sectional views of an acoustical generator according to an embodiment of the present invention.

The sound generator may be classified into a first structure in which a magnet is disposed on the outer side of a coil and a second structure in which the magnet is disposed on the inner side of the coil. The first structure may be expressed by a dynamic type or the external magnetic type, and the second structure may be expressed by a micro type or an internal magnetic type.

Fig. 2A shows a first structure, and Fig. 2B shows a second structure.

2A, the sound generator 200 includes a plate 210, 210 ', a magnet 220 on the plate, a center pole 230 on the plate, a bobbin 220 disposed about the center pole 230, A coil 250 wound around the bobbin 250, and the like.

Specifically, a magnet 220 is disposed on the first plate 210, and a second plate 210 'is provided on the magnet 220. The first plate 210 and the second plate 210 'may fix the sound generator 200 to the support member 300 while supporting the magnet 220. Accordingly, the first plate 210 can be fixed to the support hole formed in the support member 300, and the magnet 220 positioned between the first plate 210 and the second plate 210 ' .

At least one of the first plate 210 and the second plate 210 'may be made of a magnetic material such as iron (Fe). The plate is not limited to this term, but may be expressed in other terms such as yoke.

The magnet 220 may be a sintered magnet such as barium ferrite. The material of the magnet 220 may be ferric trioxide (Fe ₂ O ₃ ), barium carbonate (BaCO ₃ ), neodymium magnet, strontium ferrite with improved magnetic component, An alloy casting magnet of aluminum (Al), nickel (Ni), cobalt (Co) or the like may be used, but is not limited thereto. The neodymium magnet can be, for example, neodymium-iron-boron (Nd-Fe-B).

 And a frame 240 is disposed on the second plate 210 '. A center pole 230 is disposed in a central region of the first plate 210. The center pawl 230 may also be referred to as pole pieces. The center pole 230 and the first plate 210 may be integrally formed.

A bobbin 250 surrounding the center pole 230 is disposed. A coil 260 is wound around the lower side of the bobbin 250, and a current for generating sound is applied to the coil 260.

The bobbin 250 may be a ring-shaped structure formed of paper, an aluminum sheet, or the like, and the coil 260 may be wound around a certain area under the bobbin 250. The bobbin 250 and the coil 260 may be combined to form a voice coil.

A damper 270 may be disposed between the upper portion of the bobbin 250 and the frame 240. The damper may be represented by another term such as an edge.

2B is a view showing a second structure in which the magnet is disposed inside the coil.

2B, the sound generating display 200 includes a magnet 220 on a first plate 210, a center pole 230 on a magnet 220, a magnet 220 and a center pole 230 A bobbin 250 disposed around the bobbin 250, and a coil 260 wound around the bobbin 250 and the like.

Specifically, the first plate 210 may be fixed to a support hole formed in the support member 300. A magnet 220 is disposed on the first plate 210 and a center pole 230 is disposed on the magnet 220.

A bobbin 250 is disposed to surround the magnet 220 and the center pole 230 and a coil 260 is wound around the bobbin 250. [

The second plate 210 'is disposed around the outer periphery of the first plate 210 and the frame 240 is disposed outside the second plate 210'. A damper 270 is disposed between the frame 240 and the bobbin.

The sound generating device of the second structure is advantageous in that the leakage magnetic flux is small and the overall size can be made smaller than the first structure in which the magnet is disposed on the outer side.

The sound generating device used in the display device according to the embodiment of the present invention is not limited to the structure shown in Figs. 2A and 2B, and other types of sound generating devices capable of generating sound by vibrating the display panel may also be used have.

3A and 3B are diagrams for explaining contents of generating sound of the sound generating device according to the first structure of the embodiment of the present invention.

3A shows a state in which a current is applied.

The center pole 230 connected to the lower surface of the magnet 220 becomes the N pole and the first plate 210 connected to the upper surface of the magnet 220 becomes the S pole so that an external magnetic field is formed between the coils 260 .

In this state, when a current for generating sound is applied to the coil 260, an applied magnetic field is generated around the coil 260, and a force for moving the bobbin 250 upward is generated by the applied magnetic field and the external magnetic field. Specifically, when a current is applied to the coil 260, a magnetic field is formed around the coil 260 and an external magnetic field is formed by the magnet 220. Therefore, according to Fleming's law, (230).

Since the one surface of the bobbin 250 is in contact with the rear surface of the display panel 100, the display panel 100 is vibrated upward (indicated by an arrow) according to the current application or non-application of the coil 260, Sound waves are generated by this vibration.

3B, a force for moving the bobbin 250 downward is generated in accordance with a similar principle described with reference to FIG. 3A, and a current is applied to the display panel 100 (Indicated by an arrow).

A damper 270 is disposed between the upper portion of the bobbin 250 and the frame 240. The damper 270 has a corrugated structure and can adjust up and down vibration of the bobbin 250 while contraction and relaxation according to the upward and downward movement of the bobbin 250. That is, since the damper 270 is connected to the bobbin 250 and the frame 240, the vertical vibration of the bobbin 250 can be adjusted by the restoring force of the damper 270. Specifically, when the bobbin 250 vibrates at a predetermined height or more or vibrates at a predetermined height or less, the bobbin 250 can be restored to its original position by the restoring force of the damper 270.

Accordingly, the display panel 100 can vibrate up and down according to the current application direction and size to the coil 260, and sound waves can be generated by this vibration.

4A and 4B are diagrams for explaining contents of generating sound of the sound generating device according to the second structure of the embodiment of the present invention.

4A shows a state in which a current is applied.

The center pole 230 connected to the upper surface of the magnet 220 becomes the N pole and an external magnetic field is formed between the coils 260. These polarities may not necessarily coincide with each other. If the coil 260 is formed in the opposite direction, the winding direction of the coil 260 may be modified to operate in the same manner. In this state, when a current for generating sound is applied to the coil 260, an applied magnetic field is generated around the coil 260, and a force for moving the bobbin 250 upward is generated by the applied magnetic field and the external magnetic field. Specifically, when a current is applied to the coil 260, a magnetic field is formed around the coil 260 and an external magnetic field is formed by the magnet 220. Therefore, according to Fleming's law, (230).

Since the one surface of the bobbin 250 is in contact with the rear surface of the display panel 100, the display panel 100 is vibrated upward (indicated by an arrow) according to the current application or non-application of the coil 260, Sound waves are generated by this vibration.

4A, a force for moving the bobbin 250 downward is generated in accordance with a similar principle described in FIG. 4A, and a current is applied to the display panel 100 (Indicated by an arrow).

A damper 270 is disposed between the upper portion of the bobbin 250 and the frame 240. The damper 270 has a corrugated structure and can adjust up and down vibration of the bobbin 250 while contraction and relaxation according to the upward and downward movement of the bobbin 250. That is, since the damper 270 is connected to the bobbin 250 and the frame 240, the vertical vibration of the bobbin 250 can be adjusted by the restoring force of the damper 270. Specifically, when the bobbin 250 vibrates at a predetermined height or more or vibrates at a predetermined height or less, the bobbin 250 can be restored to its original position by the restoring force of the damper 270.

Accordingly, the display panel 100 can vibrate up and down according to the current application direction and size to the coil 260, and sound waves can be generated by this vibration.

5 is a view showing another embodiment of the sound generating device of the present specification.

5A is a plan view according to another embodiment of the sound generator of the present invention, and FIG. 5B is a sectional view taken along line II-II 'of FIG. 5A.

5A, a display panel 100 for displaying an image, a first sound generating device 1200 and a second sound generating device 1200 'for generating sound by vibrating the display panel may be included.

The first sound generating device 1200 and the second sound generating device 1200 'are disposed adjacent to each other. It is difficult to uniformly maintain the contact characteristics between the sound generator and the display panel when a plurality of sound generators are disposed apart from each other when the adjacent sound generators are used, The sound quality is deteriorated due to the delay phenomenon. Therefore, when the adjacent acoustic energy generating apparatus of the embodiment of the present invention is applied, the interference or delay phenomenon between the sound waves generated in the sound generating apparatus can be reduced, as compared with the case where the plurality of sound generating apparatuses are arranged apart from each other, The acoustic output characteristic can be improved

The structures described in FIGS. 2A and 2B can be applied to the structures of the first sound generating device 1200 and the second sound generating device 1200 '.

A fixing device 1000 for fixing the first sound generating device 1200 and the second sound generating device 1200 'is also included. The fixing device 1000 may be a mold structure that can be made of a material such as plastic by a molding method, but is not limited thereto.

5B is a cross-sectional view taken along line II-II 'of FIG. 5A.

Referring to FIG. 5B, the display device may include a first sound generating device 1200, a second sound generating device 1200 ', and a supporting member 300.

The supporting member 300 may be disposed on the rear surface or the side surface of the display panel 100 so as to support the display panel 100, The apparatus 1200 and the second sound generating apparatus 1200 'may be fixed to the support member 300 and disposed adjacent to the display panel 100.

The sound generators 1200 and 1200 'can be accommodated by the support holes 310 provided in the support member 300. When the sound generators 1200 and 1200 'are inserted into and fixed to the support holes 310, the sound generators 1200 and 1200, which are disposed between the rear surface of the display panel 100 and the inner surface of the support member 300, 1200 'can be made small, so that the space or area where the sound is generated can be made small.

The fixing device 1000 may further include a nut 330 fixed to the support member 300 and the fixing device 1000 may be fixed to the nut 330 by a screw 320 inserted into a mounting hole of the fixing device. Accordingly, since the screw hole is formed in the inner surface of the nut 330, the screw hole 320 of the fixing device 1000 is aligned with the screw hole of the nut 330, May be fixed to the support member 300. [

The nut 330 may be, for example, a self-clinching nut. An example of a self-clinching nut is Pem Nut.

When the Pem nut is used, the vibration generated in the sound generator 200 can be partially absorbed in the Pam nut, so that the vibration transmitted to the support member 300 can be reduced.

The support member 300 may be, for example, a cover bottom. The display panel 100 may further include a middle cabinet that surrounds the side surface of the display panel 100 and is coupled to the cover bottom and receives one side edge of the display panel 100 to support the display panel 100. The support member 300 may include a cover bottom, or a cover bottom and a middle cabinet. However, the support member 300 may include a structure capable of supporting a rear surface or a side surface of the display panel 100, and the like.

The support member 300 may include a cover bottom, a plate bottom, a back cover, a base frame, a metal frame, a metal chassis, a chassis base, (Chassis base), m-chassis and so on.

The support member 300 may include any type of frame or plate-like structure disposed on the back surface of the display device as a support for supporting the display panel 100, and the like.

An adhesive member may be disposed on the edge of the support member 300 and the display panel 100. [ The adhesive member can be disposed at the edge of the support member 300, and adheres the display panel 100 and the support member 300 to each other. The bonding member may be a double-side tape, but is not limited thereto.

A partition 400 may further be provided between the supporting member 300 and the display panel 100. [ The partition 400 may include an air gap 500 or a space where sound is generated when the display panel 100 is vibrated by the sound generator 200.

The partition 400 may be referred to as an enclosure or a baffle, and is not limited to a term. The partition 400 may be the entire area of the four sides of the outer periphery of the display panel 100. [ The partition 400 may be a sealed structure or an unsealed structure, and the partition 400 may be a double-side tape.

FIG. 6 is a plan view showing a sound generator and a partition according to an embodiment of the present invention. FIG.

Referring to FIG. 6, the display panel 100 includes a first area and a second area. The first region may be the left region of the display panel 100, and the second region may be the right region of the display panel. The first sound generating device 200 is disposed in the first area of the display panel 100 and the second sound generating device 200 'is disposed in the second area of the display panel 100. In the first sound generating device 200 and the second sound generating device 200 ', sound of different band can be outputted.

At this time, the structures of the first sound generating device 200 and the second sound generating device 200 'can be applied to the structures shown in FIGS. 2A and 2B. 5A and 5B can be applied to the first sound generating device 200 and the second sound generating device 200 '.

A first partition (Partition 700) may be disposed between the first sound generating device 200 and the second sound generating device 200 ', and the first sound generating device 200 and the second sound generating device 200' 'May be arranged in a second partition (partition 400). The first partition 700 and the second partition 400 can separate the left and right sounds generated by the first sound generating device 200 and the second sound generating device 200 '.

Partitions 400 and 700 may be referred to as enclosures or baffles, and are not limited to terms. The partitions 400 and 700 may be formed as a sealed structure or an unsealed structure.

The partitions 400 and 700 may be made of polyurethane or polyolefin, but the present invention is not limited thereto. It may be composed of a one-sided tape or a double-sided tape or the like, and may be made of a material having elasticity that can be compressed to a certain extent.

Therefore, the sound of the mid-range band can be output by the two sound generators. By configuring a partition between the two sound generators, the left and right separation of the sound becomes possible, so that the stereo characteristics of the sound can be improved.

Figs. 7A and 7B are cross-sectional views of a coupling structure of a sound generator and a support member according to an embodiment of the present invention; Fig.

Fig. 7A shows a first structure, and Fig. 7B shows a second structure.

The structure described in Figs. 2A and 2B can be applied to the structure of the sound generating device 600 of Figs. 7A and 7B. 5A and 5B can be applied to the first sound generating device 200 and the second sound generating device 200 '.

The sound generating device 600 of Figures 7A and 7B includes a plate 610, 610 ', a magnet 620 on the plate, a center pole 630 on the plate, a bobbin A coil 650 wound around the bobbin 650, and the like.

Referring to FIG. 7A, a thickened portion 614 formed integrally with the first plate 610 of the sound generator 600 is formed. The first plate 610 of the sound generator 600 has a cylindrical or cylindrical shape and one side of the first plate 610 is formed with a protrusion larger than the diameter of the remaining portion of the first plate 610. The protruding portion having a larger diameter can be expressed by the enlarged portion 614. The enlarged diameter portion 614 may be formed in an annular shape. An extended portion 612 for fixing the sound generator 600 is formed in a part of the enlarged portion 614.

The extension portion 612 is formed with a screw 320 and a nut 330. The nut 330 may be, for example, a self-clinching nut. An example of a self-clinching nut is the Pem nut.

When the Pem nut is used, the vibration generated in the sound generator 600 can be partially absorbed in the Pam nut, so that the vibration transmitted to the support member 300 can be reduced.

Referring to FIG. 7B, a thickened portion 614 formed integrally with the first plate 610 of the sound generator 600 is formed. The first plate 610 of the sound generator 600 has a cylindrical or cylindrical shape and one side of the first plate 610 is formed with a protrusion larger than the diameter of the remaining portion of the first plate 610. The protruding portion having a larger diameter can be expressed by the enlarged portion 614. The enlarged diameter portion 614 may be formed in an annular shape. An extended portion 612 for fixing the sound generator 600 is formed in a part of the enlarged portion 614.

The extension portion 612 is formed with a screw 320 and a nut 330. The nut 330 may be, for example, a self-clinching nut. An example of a self-clinching nut is the Pem nut.

When the Pem nut is used, the vibration generated in the sound generator 600 can be partially absorbed in the Pam nut, so that the vibration transmitted to the support member 300 can be reduced. If the support member 300 is directly coupled to the sound generator 600 without the Pam nut, the vibration generated in the operation of the sound generator 1600 is transmitted to the support member 300 for a long time, The support member 300 may be bent or deformed. When the support member 300 is thin, the support member 300 is directly coupled to the screw 320 of the support member 300, so that the fixing force of the support member 300 and the sound generator 1600 may not be sufficient. .

Therefore, when the nut is formed to fix the sound generator to the support member, the thickness of the support member is increased to prevent the support member from being warped or deformed and to improve the fixing force of the support member and the sound generator. There is a problem that the thickness of the display device becomes thick because the thickness of the supporting member becomes thick. When the supporting member is made of glass or stainless steel in order to improve the appearance of the display device, a problem arises in that a nut can not be inserted into the supporting member. Accordingly, the second support member 305 is further configured on the first support member 300 so that the nut 330 can be inserted into the first support member 300. The second support member 305 is made of aluminum (Al) and can insert the nut 330. The sound generator 1600 is coupled to the first support member 300 and the second support member 305 by the screws 320 using the nut 330 fixed to the first support member 300. The first support member 300 and the second support member 305 can be fixed by an adhesive member. The bonding member may be a double-side tape, but is not limited thereto.

By forming the first supporting member 300 of glass or stainless steel, the appearance of the display device can be improved. Further, by further configuring the second support member 305, since the sound generator 1600 can be brought into close contact with the front surface of the display panel 100 by the thickness of the first support member 330, the thickness of the display device can be reduced .

8 is a cross-sectional view of a coupling structure of an acoustical generator, a support member, and a cap member according to another embodiment of the present invention.

8, the display device may include a display panel 100, a support member 300, an acoustic generator 600, and a cap member 800. [

A display device according to an embodiment of the present invention includes a display panel 100 for displaying an image, a support member 300 for covering and supporting at least the rear surface of the display panel, And a cap member 800 fixed around the outer periphery of the sound generator 600. The cap member 800 may be formed of a synthetic resin. The cap member 800 can prevent acoustic leakage or reflection sound through the support hole 310 of the support member 300 and prevent foreign matter from penetrating.

And a heat dissipation member 900 disposed in contact with the inner surface of the cap member 800 and the rear surface of the sound generating device 600, more specifically, the rear surface of the lower plate of the sound generating actuator. The heat dissipating member 900 is for discharging the heat generated in the sound generating device 600 through the heat dissipating member 900 to the outside. A damping member 800 may be disposed between the edge of the cap member 700 and the backside of the cover bottom.

The damping member 850 prevents the leakage of sound leaked through the gap between the sound generator 600 and the support member 300 to the outside of the cap member, And is used to prevent noise due to contact between the cap member 900 and the support member 300.

The sound generator 600 includes a lower plate 610 inserted into the support hole 310, a magnet 620 disposed on the lower plate, a center pole 630 disposed in the center of the lower plate, And the distal end portion may include a bobbin 650 contacting the display panel 100, a coil 660 wound around the bobbin, and the like. At this time, the structure described in FIGS. 2A and 2B can be applied to the structure of the sound generator 600. The structures described in Figs. 5A and 5B can also be applied.

The sound generating device 600 further includes an outer frame portion which is defined in a rear portion of the sound generating device 600 and which is defined as a region extending more than the diameter of the lower plate 610. The outer frame portion of the sound generating actuator 600 is a large- Or may be constituted by a separate mold cover 690 which is injection-molded by insert molding or the like so as to surround the side surface of the lower plate.

One or more heat dissipating holes may be formed on one side of the cap member 800 in case the heat dissipating member 900 does not sufficiently dissipate heat. By further providing a hole at one side of the cap member 800, the heat generated by the sound generator can be more effectively discharged to the outside, thereby preventing the display device from being damaged by heat.

 The mold cover 690 and the cap member 800 may be coupled to the support member 300 by a nut 330 and a screw 320 that are fixed to the cover bottom 300.

The nut 330 may be fixed by coating one end of the nut 330 in the fixing hole formed in the support member 300 and then coating the tip end thereof.

A screw through hole is formed in the mold cover 690 of the acoustic wave generator 600 and a screw through hole is formed in the corresponding position of the cap member 800, The acoustic generating actuator 600 and the cap member 800 can be fixedly coupled to the cover bottom by tightening the screw 320 after aligning the screw holes.

The use of such a nut 330 not only has the advantage that the length of the screw 320 can be reduced but also the fixing force is not sufficient when the supporting member 300 is thin and screws are directly coupled to the supporting member 300 There is also an advantage of solving the problem.

9A and 9B are a drawing and a cross-sectional view of a cap member according to an embodiment of the present invention.

As shown in FIGS. 9A and 9B, the cap member 800 may have a circular cap shape having a hollow inside to surround all the outer portions of the sound generator 600, and may be formed of a metal material having a high thermal conductivity and a high heat capacity have.

The shape of the cap member does not necessarily have to be circular, and there is no limitation in the type in which it can be disposed on the top of the sound generator 600.

As the material of the cap member 800, aluminum (Al), copper (Cu), and alloys thereof may be used, but not limited thereto, any material having sufficient rigidity and thermal conductivity may be used, Specifically, it is made of a material having a heat conduction characteristic of about 60 W / mK or more.

One or more curved rounded portions 820 may be formed on the rear side of the cap member 800 in order to prevent the cap member 800 itself from acting as a diaphragm to generate unnecessary sound when the cap member 800 is thin. When the rounded portion 820 is formed on the rear side of the cap member 800, the vibration of the cap member due to the air pressure is suppressed as compared with the case where the flat portion is formed, so that unnecessary sound generation can be reduced.

The cap member 800 may be formed with a receiving groove 810 in which the head of the screw 320 is received. According to the receiving groove 810, the head of the screw 320 fixing the cap member to the outer edge of the acoustic generator 600 and the supporting member 300 can be prevented from being loosened and loosened, There is also an effect.

A capping material layer 830 may be formed on the inner surface of the cap member 800. The bump material layer 830 absorbs the leakage sound appropriately, thereby preventing the degradation of the acoustic output characteristics due to the leakage sound.

The material constituting the sound absorbing material layer 830 may include a porous sound absorbing material and a plate sound absorbing material.

10 is a graph showing acoustic output characteristics when the cap member according to the embodiment of the present invention is used.

In Fig. 10, the dotted line indicates the acoustic power amount per frequency when the cap member is not used, and the solid line indicates the case where the cap member is used.

As shown by the dotted line in Fig. 10, when the cap member is not used, the leakage sound through the gap between the sound generator and the support member and the acoustic output (sound pressure) at a specific band (about 500 to 1000 Hz) It can be seen that the phenomenon of dip rapidly decreases.

On the other hand, when the cap member according to the embodiment of the present invention is used, as shown by the solid line in FIG. 10, the reduction of the sound pressure (Dip phenomenon) at a specific frequency is prevented and consequently uniform sound quality can be realized .

The acoustic output characteristics of Figure 10 can be measured by acoustic analysis equipment. The acoustic analysis equipment includes a control PC (control PC), a sound card for transmitting and receiving sound, and an amplifier for amplifying and transmitting the sound generated from the sound card to the sound generator) It can be micro-configured to collect sound. The sound collected from the microphone is input to the control PC through the sound card, and the control program checks the sound to analyze the sound of the sound generator.

The display device according to the embodiment of the present invention can be described as follows.

A display device according to an embodiment of the present invention includes a display panel, a support member disposed on a rear surface or a side surface of the display panel to support the display panel, and an acoustic generator supported by the support member and disposed adjacent to the display panel And the sound generating device vibrates the display panel to generate sound, and the supporting member includes a plate-shaped structural member.

The plate-shaped structural member of the display device according to the embodiment of the present invention may be made of a glass material.

A display device according to an embodiment of the present invention may further include a plate-shaped metal structural member on a glass plate-shaped structural member.

The metallic plate-shaped structural member and the glass-made plate-shaped structural member of the display device according to the embodiment of the present invention can be fixed with a double-sided tape.

The supporting member and the sound generating device of the display device according to the embodiment of the present invention can be fixed by screws and nuts.

The nut of the display device according to the embodiment of the present invention may be a self-clinching nut.

And a cap member disposed on the top of the sound generating device of the display device according to the embodiment of the present invention.

The cap member of the display device according to the embodiment of the present invention can be supported by screws and nuts together with the support member and the sound generating device.

The display device according to the embodiment of the present invention may further include a hole provided at one side of the cap member.

The display device according to an embodiment of the present invention may include a heat radiation member disposed between the cap member and the sound generating device.

A display device according to an embodiment of the present invention includes a display panel, a support member disposed on a rear surface or a side surface of the display panel to support the display panel, and an acoustic generator supported by the support member and disposed adjacent to the display panel And the sound generating device includes a cap member which vibrates the display panel to generate sound, and which is disposed on the top of the sound generating device.

The display device according to the embodiment of the present invention may further include a hole provided at one side of the cap member.

The display device according to an embodiment of the present invention may include a heat radiation member disposed between the cap member and the sound generating device.

The supporting member of the display device according to the embodiment of the present invention may include a plate-shaped structural member.

The plate-shaped structural member of the display device according to the embodiment of the present invention may be made of a glass material.

A metallic plate-shaped structural member may be further formed on the glass plate-shaped structural member of the display device according to the embodiment of the present invention.

In the display device according to the embodiment of the present invention, the metallic plate-shaped structural member and the glass plate-shaped structural member can be fixed with a double-sided tape.

In the display device according to the embodiment of the present invention, the supporting member and the sound generating device can be fixed by screws and nuts.

The nut of the display device according to the embodiment of the present invention may be a self-clinching nut.

The cap member of the display device according to the embodiment of the present invention can be supported by screws and nuts together with the support member and the sound generating device.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, it is to be understood that the present invention is not limited to those embodiments and various changes and modifications may be made without departing from the scope of the present invention. . Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of protection of the present invention should be construed according to the claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

100: display panel 200, 200 ', 1200, 1200': sound generating device
210, 610: first plate 210 ', 610': second plate
220, 620: Magnet 230, 630: Center pole
240, 640: frame 250, 650: bobbin
260, 660: coil 270, 670: damper
690: Mold cover 300: Support member, first support member
305: second supporting member 310: insertion hole
320: screw 330: nut
400: second partition 614:
700: first partition 800: cap member
810: receiving groove 820: rounding part
830: bump material layer 850: damping member
900: Heat dissipating member 1000: Fixing device

Claims (20)

Display panel;
A support member disposed on a rear surface or a side surface of the display panel to support the display panel; And
And an acoustic generating device supported by the support member and disposed adjacent to the display panel,
Wherein the sound generating device vibrates the display panel to generate sound,
Wherein the supporting member includes a plate-like structural member. The method according to claim 1,
Wherein the plate-like structural member is made of a glass material. 3. The method of claim 2,
And a metallic plate-shaped structural member on the glass plate-shaped structural member. The method of claim 3,
Wherein the metallic plate-shaped structural member and the glass plate-shaped structural member are fixed with a double-sided tape. The method according to claim 1,
Wherein the supporting member and the sound generating device are fixed by screws and nuts. 6. The method of claim 5,
Wherein the nut is a self-clinching nut. The method according to claim 1,
And a cap member disposed on an upper portion of the sound generating device. 8. The method of claim 7,
Wherein the cap member is supported by screws and nuts together with the support member and the sound generating device. 8. The method of claim 7,
Wherein the cap member further includes a hole provided at one side thereof. 8. The method of claim 7,
And a heat radiating member disposed between the cap member and the sound generating device. Display panel;
A support member disposed on a rear surface or a side surface of the display panel to support the display panel; And
And an acoustic generating device supported by the support member and disposed adjacent to the display panel,
Wherein the sound generating device includes a cap member that vibrates the display panel to generate sound and is disposed on an upper portion of the sound generating device. 12. The method of claim 11,
Wherein the cap member further includes a hole provided at one side thereof. 12. The method of claim 11,
And a heat radiating member disposed between the cap member and the sound generating device. 12. The method of claim 11,
Wherein the supporting member includes a plate-like structural member. 15. The method of claim 14,
Wherein the plate-like structural member is made of a glass material. 16. The method of claim 15,
And a metallic plate-shaped structural member on the glass plate-shaped structural member. 17. The method of claim 16,
Wherein the metallic plate-shaped structural member and the glass plate-shaped structural member are fixed with a double-sided tape. 12. The method of claim 11,
Wherein the support member and the sound generating device are supported by screws and nuts. 19. The method of claim 18,
Wherein the nut is a self-clinching nut. 12. The method of claim 11,
Wherein the cap member is supported by screws and nuts together with the support member and the sound generating device.

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