TWI769398B - Display apparatus - Google Patents

Abstract

A display apparatus capable of outputting a stereo sound is disclosed, wherein the display apparatus includes a display panel configured to display an image, a sound generating device on a rear surface of the display panel, a rear cover on the rear surface of the display panel and configured to support the sound generating device, a partition member disposed between the rear surface of the display panel and the rear cover and configured to divide the display panel into first, second, third, fourth and fifth areas, and first, second, third, fourth and fifth sound generating devices attached to the rear surface of the display panel and configured to vibrate the display panel, wherein the first, second, third, fourth and fifth sound generating devices are respectively disposed in the first, second, third, fourth and fifth areas.

Description

display device

This application claims the priority of the Korean patent with application number 10-2018-0111570 and the filing date on September 18, 2018 and the Korean patent with application number 10-2019-0076528 and the filing date on June 26, 2019, The entirety of these two patents is incorporated herein by reference.

The present invention relates to a display device.

With the development of an information-oriented society, in the field of displays, various demands for expressing information according to electronic information signals are gradually increasing, which leads to the research of various light, thin and low power consumption display devices. For example, display devices are classified into liquid crystal display (LCD) devices, field emission display (FED) devices, organic light emitting display (OLED) devices, and the like.

Generally, a display device displays an image on a display panel, and additional speakers are required to provide audio. If the speakers are installed in the display device, the audio produced by the speakers will propagate towards the side, top or bottom of the display panel, rather than towards the front or rear part of the display panel, where the front side of the display panel is The part or the rear part is where the image is displayed. Therefore, the audio is not transmitted toward the user, which degrades the user's immersion experience, in which the user watches the image displayed on the display panel in front of the display panel.

If the speakers are included in a set apparatus such as a television, the speakers will occupy space and impose constraints on the spatial configuration and design of the set apparatus. In order to overcome these problems, there has been a display device that outputs audio to the front side of the display panel through vibration of the display panel. However, such displays face difficulties in outputting audio in the low frequency sound band. For example, if the audio in the low-frequency soundtrack is output by vibrating the display panel, unstable image shake may be caused by the violent vibration of the display panel. Also, since the vibration generating device for outputting the audio in the low-frequency sound band generates a lot of heat, the service life of the display panel is shortened. In order to overcome these problems, it is necessary to develop a display device which can prevent the vibration and heat transfer of the display panel during the process of outputting the audio in the low frequency sound band.

Accordingly, embodiments of the present invention provide a display device that substantially obviates one or more problems due to limitations and disadvantages of the related art.

One aspect of the present invention is to provide a display device capable of simultaneously outputting audio in the front and back directions of the display panel.

Another aspect of the present invention is to provide a display device that can facilitate the output of a wider range of low frequency sound bands and higher sound pressure audio.

Additional features and aspects are set forth in the following description, and some of the features and aspects are apparent from this description or may be learned by practice of the inventive concepts provided herein. Other features and aspects of the inventive concept may be realized or obtained by, or inferred from, the structures particularly pointed out in the description, claims, and associated drawings.

To achieve these and other aspects of the implemented and broadly described inventive concepts, a display device is provided that includes a display panel, an audio generation device, and a back cover. The display panel is used to display images. The audio generating device is located on the back of the display panel. The back cover is located on the back of the display panel and is used for supporting the audio generating device. The audio generation device includes a first audio generation module and a second audio generation module, wherein the first audio generation module is attached to the back of the display panel, and the second audio generation module is spaced from the back of the display panel.

In another aspect, a display device is provided, which includes a display panel, a partition, and first to fifth audio generating devices. The display panel is used to display images. The partitions are used to divide the display panel into first to fifth regions. The first to fifth audio generating devices are respectively disposed in the first to fifth regions. The first and second audio generation devices each include a first audio generation module and a second audio generation module, wherein the first audio generation module is attached to the back of the display panel, and the second audio generation module is spaced apart from the display panel The back. The third audio generating device, the fourth audio generating device, and the fifth audio generating device each include an exciter for directly vibrating the display panel.

Details of other examples are included in the description and drawings.

According to the display device of the exemplary embodiment of the present invention, audio can be generated such that intermediate frequency audio (400 Hz or more) and high frequency audio (20 kHz or less) with high directivity ) is propagated toward the front surface of the display panel, and low-frequency audio (200 Hz or less) that is less directional is propagated toward the rear surface of the display panel. Therefore, the position where the audio is generated can be matched with the image displayed on the display device, thereby enhancing the immersive experience of the user viewing the image on the display device.

In addition, in the display device according to the exemplary embodiment of the present invention, there is no need to provide an additional speaker, which improves the degree of freedom of design of the grouped device and the degree of freedom of arrangement of the speakers.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the inventive concepts recited in the claims.

Embodiments of the present invention will be described in detail below, and examples of which may be illustrated in the associated drawings. In the following description, detailed descriptions of conventional functions or aspects related to this document may be omitted when they unnecessarily obscure the inventive concept. The described progression of processing steps and/or operations is an example; however, the order of steps and/or operations is not in the order set forth herein, except where required to occur in a particular order is limited and can be changed as is known in the art. Like numbers represent like elements throughout. The names of the respective components used in the following explanations are selected only for the convenience of writing the specification, and may be different from the names used in the actual product.

The advantages, features and implementation methods of the present invention will be presented through the examples described below with reference to the relevant drawings. However, the present invention may be embodied in different forms and should not be limited by the examples set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Furthermore, the invention is only defined by the scope of the claims.

The shapes, dimensions, proportions, angles and numbers used to describe the embodiments of the present invention in the drawings are only examples, and therefore, the present invention is not limited to the details shown. Like numbers represent like elements throughout. In the following description, when the detailed description of the related prior art is determined to unnecessarily obscure the gist of the present invention, the detailed description will be omitted. When the description uses "comprising", "having" and "including" in this specification, another component may be added unless "only" is used. Unless taught otherwise, singular forms may include plural forms.

When describing an element, the element should be described as containing a margin of error, even though not described in detail.

When describing the positional relationship, for example, when the positional relationship between two components is described as "on", "above", "below" and "beside", unless "just" or "directly" is mentioned )", otherwise one or more other components may be placed between these two components.

When describing a temporal relationship, for example, when the chronological order is described in terms of "after", "subsequent", "next" and "before", unless "exactly", "immediately" or "directly" is used (ground)", otherwise it may contain discontinuities.

It will be understood that, although terms such as "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only for identification between elements. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present invention.

In describing elements of the invention, terms such as "first", "second", "A", "B", "(a)", and "(b)" may be used. These terms are only used to identify different elements, and the essence, sequence, order or quantity of corresponding elements are not limited by these terms. Also, unless otherwise stated, when an element or layer is described as being "connected or coupled" or "adhered" to another element or layer, the element or layer may be directly connected or adhered to another element or layer. An element or layer may also be indirectly connected or adhered to another element or layer through one or more intermediate elements or layers "disposed" between those elements and layers.

The term "at least one" should be understood to include any and all combinations of one or more of the associated listed items. For example, the meaning of "at least one of the first item, the second item and the third item" represents all two or more of the first item, the second item and the third item, as well as the first item , a combination of all the items mentioned in the second item or the third item.

In the description of the embodiment, when a structure is described as being "on or above" or "under or below" another structure, the description should be construed to include the case where a third structure is disposed between them. The dimensions and thicknesses of various elements in the drawings are for directional description only, and unless otherwise specified, embodiments of the present invention are not limited thereto.

The features of the various embodiments of the invention may be partially or fully connected or combined with each other, and may be inter-operated or technically driven with each other in various ways, as long as those skilled in the art will understand. Embodiments of the invention may be implemented independently of each other or may be implemented together in a commonly related relationship.

In describing elements of the present disclosure, terms such as "first," "second," "A," "B," "(a)," and "(b)" may be used to describe the various elements. These terms are only used to distinguish between different elements. That is, the essence, sequence, order or quantity of corresponding elements are not limited by these terms. In the description of the embodiments of the present invention, when a structure is described as being "connected", "bonded" or "contacting" with another structure, the description should be construed to include the case where these structures are in contact with each other, as well as the first Three structures are set between them.

In the description of the embodiments of the present invention, the display device may include a liquid crystal device module (LCM) and an organic light emitting display (OLED) module, wherein the liquid crystal device module includes a display panel and A driver for driving the display panel. In addition, the display device according to the present invention may also include an equipment display and a set device or set apparatus, wherein the equipment display includes a liquid crystal device module or a complete product of an organic light emitting display or a set device or set apparatus. Final products such as laptops, televisions, computer screens, automotive displays or vehicle displays, and sets of electronic devices or mobile electronics such as smartphones or electronic tablets device.

Therefore, the display device according to the present invention may include an applied product or a set of devices, and the applied product or set of devices includes a liquid crystal device module and an organic light emitting display module and a display device such as a liquid crystal device module and an organic light emitting display module .

If necessary, the liquid crystal device module and the organic light emitting display module provided with the display panel and the driver can be represented as a display device, and the electronic device including the final exhibit of the liquid crystal device module and the organic light emitting display module can be represented as a group device. For example, for display devices such as liquid crystal device modules and organic light emitting display modules, it may include a display panel and a source printed circuit board, where the source printed circuit board corresponds to a controller used to drive the display panel. However, for a ganged device, it may include a ganged printed circuit board corresponding to a ganged controller, wherein the ganged controller is connected to the source printed circuit board to control the entire ganged device.

The display panel used in the embodiments of the present invention can be any type of display panel, such as liquid crystal display panel, organic light emitting diode display panel, quantum dot (QD) display panel, electroluminescent display panel etc., but not limited to these types. The flexible substrate and the back play support structure for the display panel of the organic light emitting diode are not limited to a specific display panel that enables the bezel to bend. Also, the display panel used in the display device according to the embodiment of the present invention is not limited to the appearance and size of the display panel.

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

FIG. 1 is a perspective view of a display device according to an embodiment of the present invention. A display device according to an embodiment of the present invention includes a display panel 100 , an audio generating device 200 and a back cover 300 . The display panel 100 is used to display images. The audio generating device 200 is disposed on the back of the display panel 100 . The back cover 300 is disposed on the back of the display panel 100 and used to support the display panel 100 . The audio generation device 200 includes a first audio generation module and a second audio generation module, wherein the first audio generation module is attached to the back of the display panel 100, and the second audio generation module is disposed at a distance from the display panel at the same time 100 on the back.

The display panel 100 is used for displaying images, and the display panel 100 may be any type of display panel, such as a liquid crystal display panel, an organic light emitting diode (OLED) display panel, an electroluminescence display panel, and the like. The display panel 100 vibrates according to the vibration of the audio generating device, and then outputs audio.

In an embodiment of the present invention, the pixel array layer includes an anode, a cathode, and an organic composite layer, and according to the structure of the pixel array layer, the display panel 100 can display images by means of top emission, bottom emission and dual emission. In the case of using the top emission method, the image is displayed by emitting visible light in the direction of the front side of the substrate, where the visible light is generated in the pixel array layer. In the case of using bottom emission, the image is displayed by emitting visible light in the direction of the backside of the substrate, where the visible light is generated in the pixel array layer.

The back cover 300 is disposed on the back of the display panel 100 , and the back cover 300 supports the display panel 100 . For example, the back cover 300 is spaced apart from the display panel 100 , and the back cover 300 can support the audio generating device disposed on the back cover 300 .

The back cover 300 is used to cover the entire back surface of the display panel 100 while being spaced from the back surface of the display panel 100 , and the back cover 300 may have the shape of a flat plate and be made of glass material, metal material or plastic material. In this case, the edge or sharp corner portion of the back cover 300 may have a sloped or curved surface through a chamfering process or a corner rounding process. According to an embodiment of the present invention, the glass material for forming the back cover 300 may be sapphire glass or other suitable materials. For example, the metal made of the back cover 300 can be any one of aluminum, aluminum alloy, magnesium alloy, and iron-nickel alloy. According to another embodiment of the present invention, the back cover 300 is thinner than the metal plate and the glass plate, and the back cover 300 may have a stacked structure formed by glass plates, wherein the glass plates face the back of the display panel 100 . In this case, the rear surface of the display device can be used as a mirror surface by a glass plate.

FIG. 2 illustrates audio output of a display device according to an embodiment of the present invention. The first audio generating module is in contact with the back of the display panel 100 and may directly vibrate the display panel 100 . Therefore, since the audio generating device 200 including the first audio generating module uses the display panel 100 as the vibration plate of the audio generating device, the audio is output in the front direction FD of the display panel 100 instead of in the back direction RD of the display panel 100 or The bottom direction is output, so that the position where the audio is generated matches the image displayed on the display device, thereby optimizing the immersion of the user viewing the image on the display device. The first audio generation module can generate audio in the high frequency audio band.

According to the audio-generating current provided according to Fleming's left-hand rule, the first audio-generating module can output audio by vibrating the display panel 100 . According to an embodiment of the present invention, the first audio generation module includes a first magnet 211a, a first plate body 212a, a first exciter 213a, a bobbin ring 214a and a first damper device 215a.

The second audio generation module may be disposed at the same time spaced at the back of the display panel 100 . The second audio generating module can vibrate the air layer of the display panel and the audio generating device through the use of the vibrating plate, thereby generating audio, and can output the audio along the front direction FD and the back direction RD of the vibrating plate. The second audio generating module can generate audio in the low-pitched sound (LFS) band. According to an embodiment of the present invention, the second audio generation module may be a woofer, but is not limited to these terms.

3 is a schematic cross-sectional view of a display device according to an embodiment of the present invention. The back cover 300 may include a first opening 310 and a second opening 320, wherein the first opening 310 can be used for installing the audio generating device, and the second opening 320 can discharge the second audio generating module The resulting front audio.

The back cover 300 may include a first opening 310 and a second opening 320 . The audio generating device can be installed in the first opening 310 of the back cover 300 . The second opening 320 of the back cover 300 can release the audio generated in the audio generating device. For example, in order to insert the audio generation device into the first opening 310 , some predetermined regions of the back cover 300 may be perforated along the thickness direction of the back cover 300 to form a circular or polygonal first hole. A hole 310 is opened. Therefore, the audio generating device can be disposed on the back of the display panel 100 through the first opening 310 .

According to an embodiment of the present invention, the second opening 320 of the back cover 300 can release the audio generated in the audio generating device, for example, the audio generated by the vibration plate 214b of the second audio generating module. The vibrating plate 214b of the second audio generating module vibrates the air layer surrounding the periphery of the vibrating plate, and uses the vibration to generate audio, thereby outputting audio in a low-frequency sound band, for example. The audio generated by the vibrating plate 214b of the second audio generating module can be divided into a first low-frequency audio and a second low-frequency audio, wherein the first low-frequency audio propagates toward the top of the vibrating plate 214b, and the second low-frequency audio travels toward the top of the vibrating plate 214b. Bottom spread. In this case, the first low frequency audio propagating toward the top of the vibration plate 214b can propagate through the air gap between the display panel 100 and the back cover 300 and can be released through the second opening 320 of the back cover 300 . The second opening 320 can have various shapes and sizes to optimize low frequency audio characteristics.

The audio generation device 200 may include a first audio generation module and a second audio generation module, wherein the first audio generation module is attached to the back of the display panel 100 , and the second audio generation module is disposed at a distance from the display panel 100 at the same time. The back. The audio generating device 200 may include a circular audio generating device, an oval audio generating device, or a pair of audio generating devices. The oblate shape may be an elliptical shape or a rectangle with rounded corners, or a non-circular curved shape with different widths and heights, but is not limited to these types. The oblate-shaped audio generating device can realize better audio quality of the high-frequency audio band, can reduce the heat generated by vibration, and has good heat radiation efficiency.

4 and 5 are schematic cross-sectional views of an audio generating apparatus according to an embodiment of the present invention.

4 and 5, the display device according to an embodiment of the present invention may further include at least one speaker box 400, and the speaker box 400 is arranged on the back of the audio generating device and used for amplifying the audio generating device audio generated in . The inner space of the speaker box 400 is communicated with the opening 217 formed in the side frame 216b, so as to possibly amplify the audio generated in the second audio generating module and located in the low frequency sound band. The speaker box 400 may be provided to hold 0.1 to 1 liter of air therein, but is not limited thereto. Therefore, the height of the speaker box 400 is smaller than that of the audio generating module.

In an embodiment of the present invention, the speaker box 400 is disposed on the back of the audio generating device, and can be arranged to surround the rear end of the audio generating device. In another embodiment of the present invention, the speaker box can be used to surround the rear end of the audio generating device and have a shape extending asymmetrically toward one side of the audio generating device. The groove portion used for fixing the back cover 300 in the speaker box 400 is located in an area adjacent to the audio generating device, and a fixation device 420 can be accommodated in the groove portion. Due to the grooves provided in the speaker box 400 and the use of the fixing device 420 , the speaker box 400 can be stably fixed to the back cover 300 . If necessary, the fixing device 420 and the groove portion can be removed, and then the audio generating device and Speaker box 400 can be removed and replaced. The speaker box 400 can further include a nut 430 fixed to the back cover 300 , and the groove portion can be fixed to the nut 430 through a screw inserted in the fixing device 420 . Therefore, screw holes are formed in the nut 430 . After the groove portion is aligned with the screw hole of the nut 430 , the fixing device 420 is tightened so that the audio generating device is fixed to the back cover 300 . The nut 430 for fixing can adjust the distance between the audio generating device and the display panel 100 . Stable contact between the drum ring 214a of the first audio generation module and the display panel 100 may be an important factor for outputting audio in the front direction FD by directly vibrating the display panel 100 . In this case, if the distance between the drum ring 214a and the display panel 100 is too long, the audio cannot be properly generated. However, if the distance between the drum ring 214a and the display panel 100 is too short, the first damper 215a of the first audio generation module may be damaged. By adjusting the height of the nut 430 , the size of the audio generating device and the distance adjustment between the display panel 100 and the audio generating device can be controlled. The securing device 420 may be a screw or similar element, but is not limited to this type.

6A to 6D are a schematic cross-sectional view, a front view, a side view and a rear view of a detail of the audio generating device. The second audio generating module generates current according to the audio provided according to Fleming's left-hand rule, and vibrates the vibrating plate. According to an embodiment of the present invention, the second audio generating module includes a second magnet 211b, a second plate body 212b, a second exciter 213b, a vibration plate 214b, and a second damper 215b.

In addition, the audio generation device further includes a frame body, and the frame body can accommodate the first audio generation module and the second audio generation module. According to an embodiment of the present invention, the frame body can define the outer peripheral surface of the audio generating device, and accommodate the first audio generating module and the second audio generating module.

The frame body may include a bottom frame 216a, a side frame 216b and a top frame 216c. The bottom frame 216a is used for supporting the bottom end of the first audio generating module and the bottom end of the second audio generating module. The side frame 216b is connected to the bottom frame 216a and used to include at least one opening 217 . The top frame 216c is connected to the side frame 216b and is used to cover the top of the first audio generating module and the second audio generating module the top of the mod.

The first magnet 211a may be disposed on the bottom frame 216a. Here, the first magnet 211a can be inserted between the first plate body 212a and the bottom frame 216a. The base frame 216a and the first plate body 212a can control the magnetic flux generated in the first magnet 211a. Therefore, since the first magnet 211a is surrounded by the bottom frame 216a and the first plate body 212a, the magnetic flux generated in the first magnet 211a is concentrated on the first exciter 213a, thereby preventing the leakage of the magnetic flux.

The first plate body 212a can be disposed on the top of the first magnet 211a, and can be spaced apart from the drum ring 214a. By inserting the first magnet 211a and the first plate body 212a into the first exciter 213a having a cylindrical shape, the outer peripheral surfaces of the first magnet 211a and the first plate body 212a are surrounded by the first exciter 213a. Therefore, the first magnet 211a and the first plate 212a guide the straight-line reciprocating motion of the first exciter 213a. In this case, the first plate body 212a may be represented as a center pole or pole pieces. According to an embodiment of the present invention, the first plate body 212a is formed of a magnetic material, such as iron (Fe), to increase the magnetic flux density formed by the first magnet 211a.

The first exciter 213a surrounds the first plate body 212a and is attached to the back of the drum ring 214a. For example, the first exciter 213a surrounds the first magnet 211a and the first plate body 212a. For example, the coil is wound on the outer peripheral surface of the first exciter 213a, and when a magnetic field is formed in the first audio generation module by applying an audio-generated current to the coil, the first exciter 213a can use the drum ring to form a magnetic field. 214a and the magnetic field vibrate the display panel 100. Therefore, since the front surface of the first exciter 213a contacts the drum ring 214a, the first exciter 213a can vibrate the display panel 100 through the drum ring 214a according to whether a current is applied to the first exciter 213a. The display panel 100 receives the vibration of the drum ring 214a, and generates the audio of the intermediate frequency sound band and the high frequency sound band through the vibration of the drum ring 214a, and the audio of the high frequency sound band can be output along the front direction FD of the display panel 100. In this case, the first exciter 213a may be formed of a material that is magnetic flux penetrable and has a low thermal conductivity. For example Said, the first exciter 213a can be a cylindrical structure, and is formed of pulp or paper material, aluminum, magnesium, aluminum-magnesium alloy, synthetic resin, wherein the synthetic resin is polypropylene or nylon fiber (polyamide-based) fiber).

In addition, the first exciter 213a may further include a coil, and the coil is wound around the outer peripheral surface of the first exciter 213a, and the audio generating current may be applied to the first exciter 213a through the coil. Here, the coil may be represented as a voice coil. If the audio-generating current is applied to the coil, the first exciter 213a can be vibrated, and at the same time, according to Fleming's left-hand rule, the first damper 215a conducts the magnetic field applied around the coil and the external magnetic field around the first magnet 211a. lead. For example, the magnetic flux generated by the magnetic field can flow along the closed loop formed by the coil, the bottom frame 216a, the first magnet 211a and the first plate body 212a connected to each other in sequence, and the first plate body 212a corresponding to the end point is again Connect to the coil corresponding to the starting point. Therefore, since the first exciter 213a is guided by the first damper 215a while being vibrated, the first exciter 213a may transmit the vibration to the display panel 100 .

The drum ring 214 a can be inserted between the first exciter 213 a and the display panel 100 , so as to transmit the vibration of the first exciter 213 a to the display panel 100 . In addition, the drum ring 214a enables the first exciter 213a to be attached to the back of the display panel 100 . For example, the barrel ring 214a may be implemented with double-sided tape, but is not limited to this type. Also, the drum ring 214a prevents the heat generated in the first exciter 213a from being transferred to the display panel 100, and effectively transmits the vibration of the first exciter 213a to the display panel 100.

The first damper 215a is disposed between the first exciter 213a and the second plate body 212b, and can guide the vibration of the first exciter 213a and the vibration of the drum ring 214a. The first damper 215a has a wrinkled structure between one end and the other end, and can contract and release according to the vibration of the drum ring 214a, thereby controlling and guiding the vibration of the drum ring 214a. Therefore, since the first damper 215a is connected between the first exciter 213a and the second plate body 212b, the vibration distance of the drum ring 214a can be limited by the restoring force. For example, if the barrel ring 214a vibrates at a predetermined distance, the barrel ring 214a can pass through the first damping The restoring force of the device 215a returns to the original position. The first damper 215a may be expressed in other terms, such as a spider, suspension or edge.

According to an embodiment of the present invention, the first audio generation module may be an actuator, a transducer or an exciter, but is not limited to these types. For example, the first audio generation module can be any audio device capable of outputting audio according to electrical signals.

The second magnet 211b may be disposed on the bottom frame 216a. Here, the second magnet 211b can be inserted between the second plate body 212b and the bottom frame 216a. The bottom frame 216a and the second plate body 212b control the magnetic flux generated in the second magnet 211b. Therefore, since the second magnet 211b is surrounded by the bottom frame 216a and the second plate body 212b, the magnetic flux generated in the second magnet 211b will be concentrated in the second exciter 213b, thereby preventing the leakage of the magnetic flux.

According to an embodiment of the present invention, the second magnet 211b may have an annular shape with a hollow (eg, a space defined in a central region of the annular shape). In the hollow hole of the second magnet 211b, the first plate of the first audio generation module can be disposed away from the second magnet 211b.

The second plate body 212b can be disposed on the top of the second magnet 211b and can be spaced apart from the vibration plate 214b. Because the second magnet 211b and the second plate body 212b are inserted inside the cylindrical second exciter 213b, the second exciter 213b surrounds the outer peripheral surfaces of the second magnet 211b and the second plate body 212b. Therefore, the second magnet 211b and the second plate body 212b guide the linear reciprocating motion of the second exciter 213b. In this case, the second plate body 212b may be represented as a central pole or pole piece. According to an embodiment of the present invention, the second plate body 212b is formed of a magnetic material, such as iron (Fe), to increase the magnetic flux density formed by the second magnet 211b.

According to an embodiment of the present invention, the second plate body 212b may have an annular shape with a hollow hole. In the hollow hole of the second plate body 212b, the first plate body of the first audio generation module can be disposed away from the second plate body 212b.

The second exciter 213b surrounds the second plate body 212b and is attached to the back of the vibration plate 214b. Here, the second exciter 213b surrounds the second magnet 211b and the second plate body 212b. For example, the coil is wound around the outer peripheral surface of the second exciter 213b, and when a magnetic field is formed inside the second audio generating module by applying an audio-generating current to the coil, the second exciter 213b can pass through the vibrating plate 214b and the magnetic field to vibrate the air layer or space gap around the periphery of the vibrating plate, and can output audio. Therefore, since the front surface of the second exciter 213b is in contact with the vibration plate 214b, the second exciter 213b can vibrate the vibration plate 214b according to whether a current is applied to the second exciter 213b. In this case, the second exciter 213b may be formed of a material capable of passing the optical magnetic flux and having a low thermal conductivity. For example, the first exciter 213a may have a cylindrical structure and be formed of pulp or paper material, aluminum, magnesium, aluminum-magnesium alloy, or synthetic resin, such as polypropylene or nylon fiber.

According to an embodiment of the present invention, the second exciter 213b may have a cylindrical shape with a hollow hole. In the hollow hole of the second exciter 213b, the first exciter 213a of the first audio generation module can be disposed away from the second exciter 213b.

In addition, the second exciter 213b may further include a coil, and the coil is wound on the outer peripheral surface of the second exciter 213b, and the audio generating current may be applied to the second exciter 213b through the coil. Here, the coil may be represented as a voice coil. If an audio-generating current is applied to the coil, the second exciter 213b can be vibrated, and at the same time, according to Fleming's left-hand rule, the second damper 215b conducts the magnetic field applied around the coil and the external magnetic field around the second magnet 211b. lead. For example, the magnetic flux generated by the magnetic field can flow along the closed loop formed by the coil, the chassis 216a, the second magnet 211b and the second plate 212b connected to each other in sequence, and the second plate 212b is connected to the coil again. Therefore, since the second exciter 213b is guided by the second damper 215b while being vibrated, the second exciter 213b transmits the vibration to the display panel 100 .

The vibration plate 214b may be arranged in parallel on the back of the display panel 100 while being spaced apart from the back of the display panel 100 , but is not limited to this structure. The vibration plate 214b may have Various shapes, such as cone shapes. The vibration plate 214b can transmit the vibration of the second exciter 213b through the first air gap AG1 and the second air gap AG2, and can output audio to the back of the display panel 100 . Since the vibration plate 214b is spaced from the back surface of the display panel 100, the heat generated from the bobbin can be prevented from being transferred to the display panel 100. As shown in FIG. 4 , the first air gap AG1 is formed at least partially between the back of the display panel 100 and the vibration plate 214b, and the second air gap AG2 is formed at least partially between the frame body and the vibration plate 214b.

According to an embodiment of the present invention, the vibration of the vibration plate 214b of the second audio generation module can be used to generate the low frequency audio LFS in the low frequency sound band by vibrating the first air gap AG1 and the second air gap AG2. An air gap AG1 is located at the back of the display panel, and a second air gap AG2 is located at the audio generating device. In addition, the audio generated in the first air gap AG1 can be released through the second opening 320 along the backside direction RD of the display panel, and the audio generated in the second air gap AG2 can be released through the opening 217 of the chassis along the display panel The backside direction of the panel is RD released.

According to an embodiment of the present invention, the vibration plate 214b may have a specific shape and a central hollow hole in the central portion. In the central hollow hole of the vibration plate 214b, the drum ring 214a of the first audio generation module can be disposed while being spaced apart from the vibration plate 214b.

Since the second damper 215b is located between the second exciter 213b and the side frame 216b, the second damper 215b guides the vibration of the second exciter 213b and the vibration of the vibration plate 214b. The second damper 215b has a corrugated structure between one end and the other end, and can be contracted and released according to the vibration of the vibration plate 214b, thereby controlling and guiding the vibration of the vibration plate 214b. Therefore, since the second damper 215b is connected between the second exciter 213b and the side frame 216b, the vibration distance of the vibration plate 214b can be limited by the restoring force. For example, if the vibration plate 214b vibrates at a predetermined distance, the vibration plate 214b can be reset to the original position by the restoring force of the second damper 215b. The second damper 215b may be expressed in other terms, such as a spider, suspension or edge.

According to an embodiment of the present invention, the second audio generation module includes a hollow hole, and the first audio generation module can be disposed in the hollow hole of the second audio generation module.

The second audio generation module includes a hollow hole, and the hollow hole extends along a central axis in a vertical direction. The first audio generation module can be disposed in the hollow hole of the second audio generation module, and the first audio generation module and the second audio generation module can be connected to each other and formed integrally. The hollow hole of the second audio generating module can be formed in at least one of the second magnet 211b, the second plate 212b, the second exciter 213b, the vibration plate 214b and the second damper 215b of the second audio generating module.

According to an embodiment of the present invention, the magnetic field in the first magnet 211a of the first audio generation module may have opposite polarities to the magnetic field in the second magnet 211b of the second audio generation module.

Because the first audio generation module can directly vibrate the display panel and output the audio generated in the high frequency sound band along the front side direction FD of the display panel, and the second audio generation module can vibrate the first air gap and the second air gap , and the audio generated in the low-frequency sound band is output along the backside direction RD of the display panel. Therefore, the first audio generation module and the second audio generation module have magnetic fields in opposite directions, so as to realize independent control of the vibration of the first audio generation module and the vibration of the second audio generation module.

The bottom frame 216a can support the first magnet 211a of the first audio generation module and the second magnet 211b of the second audio generation module. The bottom frame 216a, the first plate body 212a and the second plate body 212b control the magnetic flux formed by the first magnet 211a and the second magnet 211b, thereby increasing the density of the magnetic flux flowing in the first exciter 213a and the second exciter 213b . Therefore, the bottom frame 216a and the first plate body 212a are respectively arranged at the bottom end and the top end of the first magnet 211a, and the bottom frame 216a and the second plate body 212b can be respectively arranged at the bottom end and the top end of the second magnet 211b, so as to pass through The magnetic flux density formed by the first magnet 211a and the second magnet 211b is increased to improve vibration characteristics. The chassis 216a is not limited to these terms, and may be expressed in other terms, such as a yoke.

The side frame 216b is connected to the bottom frame 216a, and the side frame 216b may include at least one opening 217 for releasing audio. The side frame 216b may include a fixing structure, and the fixing structure is used to be fixed to the backside structure by fixing means, wherein the fixing means are, for example, PEM nuts or other self-locking nuts of Penn Engineering and Manufacturing Corp. .

According to an embodiment of the present invention, the openings formed in the side frame 216b can output the audio generated from the low frequency sound band along the back direction RD of the display panel 100, wherein the audio of the low frequency sound band is generated by the vibration plate of the second audio generating module. An air gap created inside an audio-generating device. Also, according to an embodiment of the present invention, the side frame 216b is formed of a conductive material to control the magnetic flux generated in the second magnet 211b. For example, since the side frame 216b is surrounded by the second magnet 211b and is spaced apart from the second magnet 211b, the magnetic flux generated by the magnetic element is concentrated in the second exciter 213b, thereby preventing the leakage of the magnetic flux. The side frame 216b is not limited to these terms, and may be referred to by other terms, such as a yoke.

The top frame 216c can cover the top of the first audio generation module and the top of the second audio generation module. And, in an example, the first audio generation module can be attached to the back of the display panel, and the top frame 216c is used to include an opening in the center thereof.

The second audio generation module can generate the audio of the low frequency sound band, and the frequency of the audio generated by the second audio generation module is lower than that of the audio generated by the first audio generation module.

According to an embodiment of the present invention, the first audio generating module attached to the back of the display panel vibrates the display panel, and can output audio along the front direction FD of the display panel. Here, as described above, the display panel is generally made of a material with high rigidity such as glass, so the display panel is limited in outputting the audio of the low frequency sound band due to the high rigidity. Therefore, the first audio generation module can generate the audio of the high frequency sound band.

According to an embodiment of the present invention, the second audio generation module is set to be spaced at the same time On the back of the display panel, the second audio generating module can output audio by vibrating the air layer in the periphery of the vibrating plate 214b, wherein the periphery of the vibrating plate 214b includes the top or bottom of the vibrating plate 214b. The vibration plate 214b of the second audio generation module is not fixed to the display panel, and the vibration plate 214b of the second audio generation module can output audio regardless of the rigidity of the display panel. Therefore, the second audio generation module can generate audio in the low frequency sound band, and it is difficult for the first audio generation module to generate audio in the low frequency sound band.

The first audio generation module can be a starter, and the second audio generation module can be a subwoofer.

According to an embodiment of the present invention, the first audio generation module may be a starter or a trigger, but is not limited to these types. For example, the first audio generation module can be any audio device capable of outputting audio according to electrical signals. According to an embodiment of the present invention, the second audio generation module may be a subwoofer, but is not limited to these terms. The second audio generating module can be a speaker module capable of generating audio by vibrating the vibrating plate.

The second audio generating module includes a vibrating plate 214b, wherein the vibrating plate 214b is disposed and spaced at the back of the display panel, and the vibrating plate 214b may not come into physical contact with the first audio generating module. In addition, as shown in FIG. 4, the vibration plate 214b is spaced apart from a part of the frame body (ie, the bottom frame 216a).

According to an embodiment of the present invention, the vibrating plate 214b of the second audio signal generating module can output audio by vibrating the air layer located at the periphery of the vibrating plate 214b, wherein the periphery of the vibrating plate 214b includes the top or the bottom of the vibrating plate 214b, And the output audio may include audio in the low frequency sound band. In this case, the first audio generation module attached to the back of the display panel can vibrate the display panel, and the first audio generation module and the second audio generation module can vibrate with different vibration modes or frequencies from each other. Therefore, the vibration plate 214b of the second audio generation module is not in physical contact with the first audio generation module, so as to prevent interference with the first audio generation module. The audio generation module interferes, so that the second audio generation module can operate independently.

According to an embodiment of the present invention, the first audio generation module outputs the audio in the first audio band, the second audio generation module outputs the audio in the second audio band, and the first audio band may be a high frequency relative to the second audio band soundtrack. Therefore, the first audio generation module and the second audio generation module can operate independently by receiving different vibration signals, so that the display device according to an embodiment of the present invention can include the first audio generation module driver and the second audio generation module. An audio generation module driver, wherein the first audio generation module driver and the second audio generation module driver are respectively used for controlling the first audio generation module and the second audio generation module.

7A presents a front view and a side view of an audio generation device according to an embodiment of the present invention, and FIG. 7B is a rear view of the audio generation device according to an embodiment of the present invention. In the audio generating device detached from the back cover 300 , the first audio generating module vibrates and directly contacts the display panel 100 and outputs the high frequency audio HFS in the high frequency audio band. The drum ring 214a is disposed in the center of the audio generating device. In addition, the vibration plate 214b and the second damper 215b of the second audio generating module, which are spaced apart from the display panel 100 and used to generate the low frequency audio LFS in the low frequency sound band, are arranged to surround the drum ring 214a of the first audio generating module. The audio generating device can be modularized into a type that is incorporated inside the rectangular speaker box 400 . The shape of the speaker box 400 is not limited to the specific shape described above. A through hole 410 may be provided in the area of the speaker box 400 adjacent to the audio generation device, wherein the low frequency audio LFS generated by the second audio generation module in the bass frequency band is released through the through hole 410 . The through hole 410 may have various shapes and be arranged in various positions according to the characteristics of the low frequency audio LFS. In the side view, it can be understood that the drum ring 214 a and the vibration plate 214 b protrude upward from the surface of the speaker box 400 and are in contact with the display panel 100 . In the rear view, it can be understood that the bottom frame 216a combined with the speaker box 400 in the audio generating device is exposed to the outside. Also, in the front view, the through hole 410 for releasing the low frequency audio LFS in the low frequency soundtrack can be disposed on the back of the speaker box 400 , and the groove portion can be disposed to fix the speaker box 400 to the display panel 100 . Back cover 300.

FIG. 8 is a perspective view of a display device according to another embodiment of the present invention. FIG. 9 illustrates audio output of a display device according to another embodiment of the present invention.

Please refer to FIG. 8 and FIG. 9 , a display device according to another embodiment of the present invention includes a display panel 100 , a back cover 300 (or can be referred to as a backside structure), and first to fifth audio generating devices 210 , 220 , 230, 240, 250. The display panel 100 is used to display images. The back cover 300 is used to support the back of the display panel 100 . The first to fifth audio generating devices 210 , 220 , 230 , 240 and 250 are disposed between the display panel 100 and the back cover 300 . The first and second audio generation devices 210 and 220 respectively include a first audio generation module and a second audio generation module, wherein the first audio generation module is disposed in the bottom area and attached to the back of the display panel 100 , and the second audio generating module is disposed and spaced at the back of the display panel 100 at the same time. The third, fourth and fifth audio generating devices 230 , 240 and 250 may be triggers for directly vibrating the display panel 100 .

A display device according to another embodiment of the present invention can have audio characteristics of a 5.1 channel system. According to an embodiment of the present invention, the display panel 100 according to the present invention can output audio in each of the independently controlled high frequency sound bands in the five regions along the front side direction of the display panel, and can also output audio in the back side of the display panel. Direction outputs audio in each of the controlled low-frequency sound bands in both zones.

10A to 10G are rear views of other embodiments of the display device. The spacer 600 is used to divide the display panel 100 into a lower right area LRA, a lower left area LLA, an upper middle area UCA, an upper right area URA and an upper left area ULA, and the first, second, third, fourth and fifth audio generating means 210 , 220 , 230 , 240 and 250 are respectively arranged in the lower right area LRA, the lower left area LLA, the upper middle area UCA, the upper right area URA and the upper left area ULA. The spacer 600 can be inserted between the display panel 100 and the back cover 300 . According to an embodiment of the present invention, the partition 600 can surround the first audio generation device and the second audio generation device, and the partition 600 can be divided into the first audio generation device 210 , the second audio generation device 220 , and the third audio generation device 210 . Each area of the generating device 230 , the fourth audio generating device 240 and the fifth audio generating device 250 . Here, the first to fifth audio generating devices each independently generate audio in each corresponding area, and the partition 600 prevents adjacent areas and spaced apart ones. (distant) interference between the audio formed in the area. Therefore, the spacer 600 can prevent sound interference between audios generated in the lower right area LRA, the lower left area LLA, the upper middle area UCA, the upper right area URA and the upper left area ULA of the display panel 100 . The partition 600 may include first to eighth partitions 610, 620, 630, 640, 650, 660, 670, 680, and first to eighth partitions 610, 620, 630, 640, 650, 660, 670, 680 may be formed in a structure surrounding each of the lower right area LRA, the lower left area LLA, the upper middle area UCA, the upper right area URA, and the upper left area ULA.

The second partition 620 , the third partition 630 , the fifth partition 650 and the eighth partition 680 may define an area of the display panel for the audio output generated in the first audio generating device 210 , and the second partition 620 , the third partition 630 , the fourth partition 640 and the eighth partition 680 may define an area of the display panel for the audio output generated in the second audio generating device 220 . The first spacer 610 , the second spacer 620 , the sixth spacer 660 and the seventh spacer 670 may define an area of the display panel for outputting the audio generated in the third audio generating device 230 . The first partition 610 , the second partition 620 , the fifth partition 650 and the seventh partition 670 may define an area of the display panel for outputting the audio generated in the fourth audio generating device 240 . The first spacer 610 , the second spacer 620 , the fourth spacer 640 and the sixth spacer 660 may define an area in the display panel for outputting the audio generated in the fifth audio generating device 250 . The sound waves generated by using the audio generating device and by vibrating the display panel 100 propagate radially from the center of the audio generating device, and such sound waves are called progressive waves. If the traveling wave is reflected on one side of the spacer 600 and propagates in the opposite direction, the wave is called a reflected wave. If the reflected wave overlaps or interferes with the traveling wave, the wave does not propagate and is in a stationary state, and is called a standing wave. Standing waves will lower the sound pressure, thereby degrading the audio output quality. Therefore, in order to prevent the traveling wave and the reflected wave from interfering to generate a standing wave and further reduce the sound pressure, a curved portion is formed in the partition 600 . The standing wave system that causes the reduction in sound pressure is formed where there are larger traveling waves and larger reflected waves. Therefore, the curved part Can be placed where there is the largest sound wave approaching from the audio generating device. Referring to FIGS. 10A to 10G , it can be understood that various shapes of curved portions are provided in the first audio generation device 210 to the fifth audio generation device 250 . For example, in the case where the divider 600 surrounds the third audio generating device 230, the fourth audio generating device 240, and the fifth audio generating device 250 that generate high frequency audio HFS in the high frequency sound band, the curved portion may be vertically Set to align with the center of the audio-generating device. Also, in the case where the spacer 600 surrounds the first audio generating device 210 and the second audio generating device 220 that simultaneously generate the high frequency audio HFS in the high frequency sound band and the low frequency audio LFS in the low frequency sound band, the curved portion may be provided at the same time Vertically aligned to the center of the audio-generating device. In order to improve the performance of the audio, the plurality of drivers included in the audio generating device may have a thickness higher than a certain value, and this may be a factor for the backside of the display panel to have a clean back design. The average thickness of the exciter for sufficient audio output may be about 16 mm. If the audio generating device using the exciter having a thickness of about 16 mm is disposed in the upper left area ULA and the upper right area URA, the rear outer surface of the final display product may be uneven due to the thickness of the audio generating device. In order to achieve a smooth clean back on the back of the final display product, the actuators to be disposed in the upper-middle area UCA and the upper-left and upper-right areas ULA and URA may have a relatively small thickness. For example, exciters with a thickness of about 3 mm may be disposed in the upper middle area UCA and the upper left and right areas ULA, URA, and at least two exciters may be disposed adjacent to compensate for the reduced audio output. Although not shown in FIGS. 10A to 10G , in order to have a neat backside design on the rear outer surface of the final display product, at least two actuators with smaller thicknesses can be disposed on each of the third audio generating device 230 , the fourth In the audio generating device 240 and the fifth audio generating device 250, the third audio generating device 230, the fourth audio generating device 240 and the fifth audio generating device 250 are respectively disposed in the upper middle area UCA, the upper left area ULA and the upper right area URA. Referring to FIGS. 10A to 10C , the third audio generating device 230 is disposed in the upper middle area UCA on the back of the display panel 100 , together with the fourth audio generating device 240 and the fifth audio generating device 250 Aligned on the same straight line in the horizontal direction, the fourth audio generating device 240 and the fifth audio generating device 250 are respectively disposed in the upper right area URA and the upper left area ULA of the adjacent upper middle area UCA. However, please refer to FIG. 10D to FIG. 10G , the third audio generating device 230 disposed in the upper middle area UCA of the back of the display panel 100 is not aligned with the fourth audio generating device 240 and the fifth audio generating device 250 in the horizontal direction the same line in the , but spaced from the centerline. Due to this arrangement, the audio generated by the fourth and fifth audio generation devices 240 and 250 located on both sides of the display panel 100 and the audio generated by the third audio generation device 230 located in the upper middle area UCA of the display panel 100 The resulting audio will have different propagation directions. For example, if the third audio generation device 230 disposed in the upper middle area UCA of the display panel is located at the bottom relative to the alignment reference line of the fourth and fifth audio generation devices 240 and 250, the third audio generation device 230 Interaction with the fourth and fifth audio generating devices 240, 250, the audio generated in the fourth and fifth audio generating devices propagates along the left and right directions of the front surface of the display panel 100, and is generated in the third audio The audio in the generating device propagates along the middle and bottom directions of the front surface of the display panel 100 , thereby realizing a stereo surround sound effect.

11 to 12, a display device according to another embodiment of the present invention includes a display panel 100, a back cover 300, and first, second, third, fourth and fifth audio generating devices 210, 220, 230 , 240, 250. The display panel 100 is used to display images. The back cover 300 is used to support the back of the display panel 100 . The first, second, third, fourth and fifth audio generating devices 210 , 220 , 230 , 240 and 250 are disposed between the display panel 100 and the back cover 300 . The first, second and third audio generating devices 210, 220, 230 may be disposed in the bottom area of the display panel. The first and second audio generation devices 210 and 220 include a first audio generation module and a second audio generation module, wherein the first audio generation module is attached to the back of the display panel 100, and the second audio generation module is attached to the back of the display panel 100. The arrangement is also spaced at the back of the display panel 100 . The fourth and fifth audio generating devices 240 , 250 may be disposed in the top area of the display panel, and may be actuators for directly vibrating the back of the display panel 100 .

A display device according to another embodiment of the present invention may have audio characteristics of a 5.1-channel system. According to an embodiment of the present invention, the display panel 100 according to the present invention can output audio in each independently controlled high-frequency sound band in the five regions along the front side direction of the display panel 100 , and can also The back direction outputs the audio in each of the controlled low frequency bands in the two zones.

13A to 13I are rear views of other embodiments of the display device. The spacer 600 is used to divide the display panel 100 into a lower right area LRA, a lower left area LLA, a lower middle area LCA, an upper right area URA and an upper left area ULA, and the first, second, third, fourth and fifth audio generating means 210, 220, 230, 240, 250 are respectively arranged in the lower right area LRA, the lower left area LLA, the lower middle area LCA, the upper right area URA and the upper left area ULA. The spacer 600 can be inserted between the display panel 100 and the back cover 300 . According to an embodiment of the present invention, the partition 600 can surround the first audio generation device and the second audio generation device, and the partition 600 can be divided into the first audio generation device 210 , the second audio generation device 220 , the third audio generation device 220 , and the third audio generation device 210 . Each area of the audio generating device 230 , the fourth audio generating device 240 and the fifth audio generating device 250 . Here, each of the first to fifth audio generating devices independently generates audio in each corresponding area, and the partition 600 prevents interference between the audio generated in the adjacent area and the audio generated in the separated area. Therefore, the spacer 600 can prevent audio interference generated between audios of the lower right area LRA, the lower left area LLA, the lower middle area LCA, the upper right area URA, and the upper left area ULA of the display panel 100 . The partition 600 may include first to ninth partitions 610, 620, 630, 640, 650, 660, 670, 680, 690, and first to ninth partitions 610, 620, 630, 640, 650, 660, 670, 680, 690 may be formed in a structure surrounding each of the lower right area LRA, the lower left area LLA, the upper middle area UCA, the upper right area URA, and the upper left area ULA. The second spacer 620 , the third spacer 630 , the fifth spacer 650 and the ninth spacer 690 may define an area in the display panel for outputting the audio generated by the first audio generating device 210 , and the second spacer 620 , the third partition 630, the fourth partition 640 and the eighth partition 680 can be An area in the display panel for outputting the audio generated by the second audio generating device 220 is defined. The second partition 620 , the third partition 630 , the eighth partition 680 and the ninth partition 690 may define an area of the display panel for outputting the audio generated by the third audio generating device 230 . The first partition 610 , the second partition 620 , the fifth partition 650 and the seventh partition 670 may define an area of the display panel for outputting the audio generated in the fourth audio generating device 240 . The first spacer 610 , the second spacer 620 , the fourth spacer 640 and the sixth spacer 660 may define an area in the display panel for outputting the audio generated in the fifth audio generating device 250 . As described with reference to FIGS. 10A to 10G , the explanation for the occurrence of standing waves will be omitted. In order to prevent the interference between the traveling wave and the reflected wave to generate a standing wave and further reduce the sound pressure, a curved portion is formed in the spacer 600 . The standing wave system that causes the reduction in sound pressure is formed where there are larger traveling waves and larger reflected waves. Therefore, the curved portion can be placed where there is the greatest sound wave approaching from the audio generating device. Referring to FIGS. 10A to 10G , it can be understood that various shapes of curved portions are provided in the first audio generation device 210 to the fifth audio generation device 250 . For example, in the case where the divider 600 surrounds the third audio generating device 230, the fourth audio generating device 240, and the fifth audio generating device 250 that generate high frequency audio HFS in the high frequency sound band, the curved portion may be vertically Set to align with the center of the audio-generating device. Also, in the case where the spacer 600 surrounds the first audio generating device 210 and the second audio generating device 220 that simultaneously generate the high-frequency audio HFS in the high-frequency sound band and the low-frequency audio LFS in the low-frequency sound band, the curved portion may be provided at the same time Vertically aligned to the center of the audio-generating device. Although not shown in FIGS. 13A to 13I , in order to have a clean backside design on the rear outer surface of the final display product, at least two drivers with smaller thicknesses can be disposed on each of the fourth audio signal generating device 240 and the fifth In the audio generating device 250, the fourth audio generating device 240 and the fifth audio generating device 250 are respectively disposed in the upper left area ULA and the upper right area URA. The above explanations are described with reference to FIG. 10 , and thus will not be repeated. Referring to FIGS. 13A to 13E , the third audio generation device 230 , the first audio generation device 210 and the second audio generation device 220 , disposed in the lower middle area LCA of the back of the display panel 100 are aligned horizontally. The same straight line in the middle, wherein the first audio generating device 210 and the second audio generating device 220 are respectively disposed in the lower right area LRA and the lower left area LLA adjacent to the lower middle area LCA. However, please refer to FIGS. 13F to 13I , the third audio generating device 230 disposed in the lower middle area LCA of the rear surface of the display panel 100 is not aligned with the first audio generating device 210 and the second audio generating device 220 in the horizontal direction the same straight line, but spaced from the centerline. Due to this arrangement, the audio generated by the first and second audio generation devices 210 and 220 located on both sides of the display panel 100 and the audio generated by the third audio generation device 230 located in the lower middle area LCA of the display panel 100 The resulting audio will have different propagation directions. For example, if the third audio generation device 230 disposed in the lower middle area LCA of the display panel is located at the top relative to the alignment reference line of the first and second audio generation devices 210 and 220, the third audio generation device 230 Interaction with the first and second audio generating devices 210, 220, the audio generated in the first and second audio generating devices propagates along the left and right directions of the front surface of the display panel 100, and is generated in the third audio The audio in the generating device propagates along the middle and bottom directions of the front surface of the display panel 100 , thereby realizing a stereo surround sound effect.

Fig. 14A is a schematic cross-sectional view taken along the secant line I-I' in Fig. 10A .

Referring to FIG. 14A , the third to fifth audio generating devices may be exciters, attached to the display panel 100 and used to directly vibrate the display panel, thereby generating audio in the high-frequency sound band. As described above, the third to fifth audio generating devices 230, 240, 250 respectively disposed in the upper-middle area UCA, the upper-right area URA and the upper-left area ULA of the display panel can independently output the audio in the high-frequency sound band to the upper-middle area. Area UCA, upper right area URA and upper left area ULA. The back cover 300 supports the corresponding exciter and the side surface of the display panel 100 , and the step-shaped back cover 300 is adhered or combined with the partitions 640 and 650 disposed on the periphery of the display panel 100 , so that the upper right area is The URA and the ULA in the upper left area are perfectly sealed and can output independent audio.

Fig. 14B is a schematic cross-sectional view taken along the secant line II-II' in Fig. 13A picture.

Referring to FIG. 14B , the first to third audio generating devices can be exciters, and are attached to the display panel 100 and used to directly vibrate the display panel, thereby generating audio in the high-frequency sound band, and the first and second audio generating devices A mixing type may be implemented by further including a woofer, where the woofer is spaced from the display panel 100 and used to generate audio in the low frequency sound band. As described above, the first to third audio generating devices 210 , 220 and 230 are respectively disposed in the lower right area LRA, the lower middle area LCA and the lower left area LLA of the display panel. The mixer-type exciter is arranged in the lower right area LRA and the lower left area LLA, so as to output the audio in the high frequency sound band and the low frequency sound band, and the exciter is arranged in the middle and lower area LCA, so as to output the audio in the high frequency sound band. The speaker box 400 for improving the output efficiency of low-frequency audio can be combined with the side of the woofer, so as to output the audio in the low-frequency sound band. The back cover 300 supports the corresponding exciter and the side surface of the display panel 100 , and the stepped back cover 300 is adhered or combined with the partitions 640 and 650 disposed on the periphery of the display panel 100 , so that the lower right area LRA and the lower left area are formed. The LLA is perfectly sealed and can output independent audio.

15A and 15B are schematic cross-sectional views of an embodiment of an audio generation device.

The audio generation device can be classified into a first structure and a second structure, wherein the magnets in the first structure are disposed outside the coil, and the magnets in the second structure are disposed inside the coil. The first structure can be represented as a dynamic type or an external magnet type, while the second structure can be represented as a micro type or an internal magnet type.

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

Referring to FIG. 15A , the third audio generating device 230 may include a magnet 231 , a first plate body 232 , a central magnetic pole 233 , a spool 234 and a coil 235 . The magnet 231 is located on the first plate body 232 . The central pole 233 is located on the plate body. The spool 234 is disposed around the central magnetic pole 233 . The coil 235 is wound around the outer peripheral surface of the bobbin 234 . In an example, the magnet 231 is disposed on the first plate body 232, and the second plate body 236 is disposed on the magnet On the iron 231. The first board 232 and the second board 236 support the magnet 231 and fix the third audio generating device 230 to the back cover 300 . Therefore, the first plate body 232 can be fixed to the supporting hole formed in the back cover 300 , and the magnet 231 can be fixedly supported between the first plate body 232 and the second plate body 236 .

At least one of the first plate body 232 and the second plate body 236 may be formed of a magnetic material, wherein the magnetic material is, for example, iron (Fe). The plate body is not limited to these terms, and may be referred to as a yoke. The magnet 231 can be a sintered magnet formed of barium ferrite, and the magnet 231 can be made of ferric oxide (Fe ₂ O ₃ ), barium carbonate (BaCO ₃ ), neodymium (Nd) ) magnets, strontium ferrites with improved magnetic elements, aluminum (Al), nickel (Ni), or alloy-casting magnets formed from cobalt (Co), but Not limited to these materials. For example, the neodymium magnet may be a neodymium iron boron (Nd-Fe-B) magnet.

The frame body 237 is disposed on the second plate body 236 along the periphery of the first plate body 232 . The central magnetic pole 233 is disposed at the center of the first plate body 232 . The central pole 233 may be referred to as a pole piece. Here, the central magnetic pole 233 and the first plate body 232 can be integrally formed.

A spool 234 is provided to surround the central pole 233 . The coil 235 is wound on the bottom outer surface of the spool 234 , and an audio generating current is applied to the coil 235 . The spool 234 can be an annular structure made of paper or aluminum sheet, and the coil 235 can be wound around a part of the bottom of the spool 234 . Spool 234 and coil 235 may be represented as voice coils. The damper 238 may be disposed between a partial area in the top of the spool 234 and the frame body 237, and the damper may be expressed in other terms, such as edge.

FIG. 15B shows the second structure in which the magnet is disposed inside the coil.

Referring to FIG. 15B , the third audio signal generating device 230 includes a magnet 231 , a first plate body 232 , a central magnetic pole 233 , a spool 234 and a coil 235 . The magnet 231 is located on the first plate body 232 . The center pole 233 is located on the magnet 231 . The spool 234 is disposed around the magnet 231 and the center magnetic pole 233 . The coil 235 is wound on the spool 234's outer surface.

Here, the first plate body 232 may be fixed to a support hole formed in the back cover 300 . The magnet 231 is disposed on the first plate body 232 , and the central magnetic pole 233 is disposed on the magnet 231 . The spool 234 is disposed to surround the magnet 231 and the central magnetic pole 233 , and the coil 235 is wound on the outer surface of the spool 234 .

The second plate body 236 is disposed on the peripheral edge of the first plate body 232 , and the frame body 237 is disposed outside the peripheral edge of the second plate body 236 . In addition, the damper 238 is provided between the frame body 237 and the reel. Compared with the first structure in which the magnet is disposed outside the coil, the second structure has the advantages of reducing leakage of magnetic flux and reducing the overall size of the audio generating device.

Moreover, the third to fifth audio generating devices are not limited to the structures shown in FIGS. 15A and 15B . Any audio-generating device that can generate audio by vibrating the display panel can be used.

16A and 16B are perspective rear views of a display device according to another embodiment of the present invention.

Referring to FIG. 16A , in order to improve the low-frequency audio characteristics, the first audio-generating device and the second audio-generating device can be provided in a specific manner so that a low-pitched sound reflection duct 440 is formed in the speaker box, and is connected to the first audio signal generating device and the second audio signal generating device. The low-frequency audio generated in the vibrating plate of the second audio-generating device is reflected in the first air gap AG1, the second air gap AG2 and the speaker box 400, and then propagates through the low-frequency audio reflection conduit, so that the output quality of the low-frequency audio can be improved. improve.

Referring to FIG. 16B , different from the structure shown in FIG. 16A , the third audio generating device can be disposed between the first audio generating device and the second audio generating device in the bottom area. This arrangement is used to output audio in the high frequency sound band from the first, second, fourth and fifth audio generating devices 210, 220, 240, 250 and output from the first and second audio generating devices 210, 220 Audio in the low frequency sound band. In this case, the third audio The generating device 230 is used to express the important audio of the screen or the main character's voice, thereby optimizing the immersive experience of the user viewing the image of the display device.

FIG. 17 is a graph showing sound pressure characteristics of a display device according to an embodiment of the present invention. In FIG. 17 , the solid line represents the sound pressure characteristics of the mixed audio generation module whose output characteristics of the low-frequency sound band are improved, and the mixed audio generation module includes a first audio generation module and a second audio generation module. group, and the dotted line represents the sound pressure characteristics of a general audio generation module that can generate audio by directly vibrating the display panel. In FIG. 17, the horizontal axis represents frequency (Hertz), and the vertical axis represents sound pressure level (SPL) (dB).

Referring to FIG. 17 , the mixing audio generation module and the general audio generation module have similar sound pressure characteristics in the mid-frequency and high-frequency sound bands of 200 Hz or above. However, in the low frequency sound band below 200 Hz, the sound pressure characteristics of the mixed audio generation module are significantly higher than those of general audio generation modules. For example, for 100 Hz, the sound pressure characteristic measured by the mixed audio generation module can be higher than the sound pressure characteristic measured by the general audio generation module by "d", where the general audio The measured sound pressure characteristic of the generation module is 60 dB and the "d" is about 15 dB.

Display devices according to embodiments of the present invention may include liquid crystal display (LCD) devices, field emission display (FED) devices, organic light emitting display (OLED) devices, and quantum dots Display (quantum dot display) device.

A display device according to an embodiment of the present invention may include an equipment display, and the equipment display includes a complete product or final product of a liquid crystal device module or an organic light emitting display module, or a set of electronic devices or sets of devices, wherein the complete product The product or final product is, for example, a notebook computer, a TV, a computer screen, an in-vehicle display or a vehicle display, and the set of electronic devices or the set of devices is a mobile electronic device such as a smart phone or an electronic tablet.

The display device according to the embodiment of the present invention can be explained in the following manner.

According to an embodiment of the present invention, a display device includes a display panel, an audio generating device, a back cover, and a partition. The display panel is used to display images. The audio generating device is located on the back of the display panel. The back cover is located on the back of the display panel and is used for supporting the audio generating device. The separator is arranged between the back cover and the back surface of the display panel, and is used for dividing the display panel into a first area, a second area, a third area, a fourth area and a fifth area. The audio generating device includes a first audio generating device, a second audio generating device, a third audio generating device, a fourth audio generating device and a fifth audio generating device attached to the back of the display panel and used for vibrating the display panel, and the first audio generating device The audio generating device, the second audio generating device, the third audio generating device, the fourth audio generating device and the fifth audio generating device are respectively arranged in the first area, the second area, the third area, the fourth area and the fifth area.

According to one or more embodiments, the audio generation device may have audio output characteristics of a 5.1 channel system.

According to one or more embodiments, the first audio generation device and the second audio generation device may include mixing-type activators, and the third audio generation device, the fourth audio generation device, and the fifth audio generation device include activators.

According to one or more embodiments, the divider may include a curved portion, and the first audio generating device and the second audio generating device are vertically aligned in the curved portion.

According to one or more embodiments, the first area and the second area may be located at the bottom area of the display panel. The third area, the fourth area and the fifth area may be located on a top area of the display panel and disposed above the first area and the second area at the same time.

According to one or more embodiments, the third audio generating device, the fourth audio generating device and the fifth audio generating device may be aligned in a horizontal direction.

According to one or more embodiments, the fourth audio generating device and the fifth audio generating device may be aligned in a first horizontal direction, and the third audio generating device may be arranged and simultaneously spaced apart from a reference line in the first horizontal direction .

According to one or more embodiments, the first audio generating device, the second audio generating device, and the third audio generating device may be located in the bottom area of the display panel. The fourth audio generating device and the fifth audio generating device can be located on the top area of the display panel and simultaneously disposed above the first audio generating device, the second audio generating device and the third audio generating device.

According to one or more embodiments, the first audio generation device and the second audio generation device may include mixing-type activators, and the third audio generation device, the fourth audio generation device, and the fifth audio generation device include activators.

According to one or more embodiments, the third audio generating device may include an exciter capable of transmitting a human voice, and the fourth audio generating device and the fifth audio generating device may include exciters capable of transmitting object's sound.

According to an embodiment of the present invention, a display device includes a display panel, an audio generating device, a back cover, and a partition. The display panel is used to display images. The audio generating device is located on the back of the display panel. The back cover is located on the back of the display panel and is used for supporting the audio generating device. The spacer is arranged between the back cover and the back surface of the display panel, and is used for dividing the display panel into a first area, a second area, a third area, a fourth area and a fifth area. The audio generating device includes a first audio generating module, a second audio generating module and a frame. The first audio generation module is attached to the back of the display panel. The second audio generating module is spaced at the back of the display panel. The frame body is used for accommodating the first audio generating module and the second audio generating module.

According to one or more embodiments, the display device further includes a speaker box, and the speaker box is used for accommodating the frame.

According to one or more embodiments, the speaker box may be located in the first area and the second area.

According to one or more embodiments, the partition for separating between the first area and the second area may include a curved portion having at least one portion facing the first audio generation module and the second audio generation module curved surface.

According to one or more embodiments, the frame for accommodating the first audio generation module and the second audio generation module can be disposed in the first area and the second area, and the third audio generation module is additionally disposed in the in the third area, the fourth area and the fifth area.

According to one or more embodiments, the first area and the second area may be located at a bottom area of the display panel. The third area, the fourth area and the fifth area are located on the top area of the display panel and are disposed above the first area and the second area at the same time.

According to one or more embodiments, the first area, the second area and the third area may be located at the bottom area of the display panel. The fourth area and the fifth area may be located on the top area of the display panel and disposed above the first area, the second area and the third area at the same time.

According to one or more embodiments, the frame body disposed in the first area and the second area and the third audio generating module disposed in the third area may be aligned with an extension line in the same horizontal direction.

According to one or more embodiments, the frame bodies disposed in the first area and the second area may be aligned with an extension line in a horizontal direction, and the third audio generating modules disposed in the third area are spaced at a fixed distance extension line in the horizontal direction.

According to one or more embodiments, the first audio generation module and the second audio generation module may be vertically aligned with one end of the curved portion.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the inventions. Therefore, it is to be understood that the embodiments of the present invention cover the modifications and variations of the present invention so long as they come within the scope of the claims and their equivalents.

100: Display panel

200: Audio generation device

210: The first audio generation device

211a: First Magnet

212a: first board body

213a: First exciter

214a: Cylinder ring

215a: First Damper

216a: Chassis

211b: Second magnet

212b: Second plate body

213b: Second exciter

214b: Vibration plate

215b: Second Damper

216b: Side Frame

216c: Top shelf

217: Opening

220: Second audio generation device

230: Third audio generation device

232: The first board body

231: Magnet

233: Central pole

234: Reel

235: Coil

236: Second plate body

237: Frame

238: Damper

240: Fourth audio generation device

250: Fifth Audio Generation Device

300: back cover

310: The first opening

320: Second opening

400: Speaker Box

410: Through hole

420: Fixtures

430: Nut

600: Dividers

610: First divider

620: Second divider

630: Third divider

640: Fourth divider

650: Fifth divider

660: Sixth Separator

670: Seventh Separator

680: Eighth Divider

690: Ninth Divider

FD: Front direction

RD: Dorsal direction

LFS: Low Frequency Audio

HFS: high frequency audio

AG1: first air gap

AG2: Second Air Gap

LRA: Lower right area

LLA: Lower left area

LCA: Lower Middle Area

UCA: Upper middle area

URA: Upper right area

ULA: Upper left area

The accompanying drawings may be included to provide a further understanding of the invention, and constitute a part of the application, exemplary embodiments, and description for explaining various principles of the invention. In the schema: FIG. 1 is a perspective view of a display device according to an embodiment of the present invention. FIG. 2 illustrates audio output of a display device according to an embodiment of the present invention. 3 is a schematic cross-sectional view of a display device according to an embodiment of the present invention. 4 is a schematic cross-sectional view of an audio generating apparatus according to another embodiment of the present invention. 5 is a schematic cross-sectional view of an audio generating apparatus according to another embodiment of the present invention. 6A to 6D are a schematic cross-sectional view, a front view, a side view and a rear view of a detail of the audio generating device. 7A presents a front view and a side view of an audio generation device according to an embodiment of the present invention, and FIG. 7B is a rear view of the audio generation device according to an embodiment of the present invention. FIG. 8 is a perspective view of a display device according to another embodiment of the present invention. FIG. 9 illustrates audio output of a display device according to another embodiment of the present invention. 10A to 10G illustrate other embodiments of the audio generating device and the partition in the display device according to the present invention. 11 is a perspective view of a display device according to another embodiment of the present invention. FIG. 12 illustrates the audio output of a display device according to another embodiment of the present invention. 13A to 13I illustrate other embodiments of the audio generating device and the partition in the display device according to the present invention. Fig. 14A is a schematic cross-sectional view taken along the secant line I-I' in Fig. 10A . FIG. 14B is a schematic cross-sectional view taken along the secant line II-II' in FIG. 13A . FIG. 15A is a schematic cross-sectional view of an embodiment of an audio generation device. 15B is a schematic cross-sectional view of an embodiment of an audio generation device. 16A is a rear view of a display device according to another embodiment of the present invention. 16B is a rear view of a display device according to another embodiment of the present invention. FIG. 17 is a graph showing sound pressure characteristics of a display device according to an embodiment of the present invention.

100: Display panel

200: Audio generation device

300: back cover

FD: Front direction

RD: Dorsal direction

Claims (22)

A display device, comprising: a display panel for displaying an image; an audio generating device located on a back surface of the display panel; a back cover located on the back surface of the display panel and used to support the audio generating device ; And a partition is arranged between the back cover and the back of the display panel, and is used to divide the display panel into a first area, a second area, a third area, a fourth area and a first area Five areas; wherein, the audio generating device includes a first audio generating device, a second audio generating device, a third audio generating device, a fourth audio generating device attached to the back of the display panel and used to vibrate the display panel Audio generating device and a fifth audio generating device, and the first audio generating device, the second audio generating device, the third audio generating device, the fourth audio generating device and the fifth audio generating device are respectively arranged in the The first area, the second area, the third area, the fourth area and the fifth area, wherein the first audio generation device, the second audio generation device, the third audio generation device, the fourth audio At least one of the generating device and the fifth audio generating device is used to output audio along a back direction of the display panel and output audio along a front direction of the display panel; wherein the first audio generating device, the second audio At least one of the generating device, the third audio generating device, the fourth audio generating device and the fifth audio generating device comprises a first audio generating module, a second audio generating module and a frame, The first audio generation module includes a first exciter and a cylinder ring, the cylinder ring is inserted between the first exciter and the display panel, the second audio generation module includes a second exciter and a vibrating plate, the first exciter of the first audio generation module is disposed away from the second exciter, the vibrating plate is spaced apart from the back of the display panel and a part of the frame, a first air gap A second air gap is formed at least partially between the back surface of the display panel and the vibration plate, and a second air gap is formed at least partially between the frame body and the vibration plate. The display device as described in claim 1, wherein the audio generating device has audio output characteristics of a 5.1-channel system. The display device as described in claim 1, wherein the first audio generating device and the second audio generating device comprise a mixer-type exciter, and the third audio generating device, the fourth audio generating device and the The fifth audio generating means includes an exciter. The display device as described in claim 3, wherein the partition includes a curved portion, and the first audio generating device and the second audio generating device are vertically aligned in the curved portion. The display device as described in claim 3, wherein the first area and the second area are located in a bottom area of the display panel, and the third area, the fourth area and the fifth area are located in the display panel a top area of the device and is disposed above the first area and the second area at the same time. The display device as described in claim 5, wherein the third audio generating device, the fourth audio generating device and the fifth audio generating device are aligned in a horizontal direction. The display device as described in claim 5, wherein the third audio generating device is not aligned with the same straight line in a horizontal direction with the fourth audio generating device and the fifth audio generating device. The display device as described in claim 1, wherein the first audio generating device, the second audio generating device and the third audio generating device are located in a bottom area of the display panel, the fourth audio generating device and The fifth audio generating device is located at a top area of the display panel and is simultaneously disposed above the first audio generating device, the second audio generating device and the third audio generating device. The display device as described in claim 8, wherein the first audio generating device and the second audio generating device comprise a mixer-type exciter, and the third audio generating device, the fourth audio generating device and the The fifth audio generating means includes an exciter. The display device as described in claim 9, wherein the back cover is used for supporting the first audio generating device and the second audio generating device, wherein the back cover includes a first opening and a second opening , the first audio generating device and the second audio generating device are installed in the first opening, and the second opening is used to release the backside audio generated by the first audio generating device and the second audio generating device . The display device as described in claim 8, wherein the third audio generating device comprises an exciter capable of propagating human voice, and the fourth audio producing device and the fifth audio producing device comprise an exciter capable of propagating object audio exciter. A display device, comprising: a display panel for displaying an image; an audio generating device located on a back surface of the display panel; a back cover located on the back surface of the display panel and used to support the audio generating device; and a partition member disposed between the back cover and the display panel Between the back surfaces, the display panel is divided into a first area, a second area, a third area, a fourth area and a fifth area, wherein the audio generating device comprises: a first audio generating module a group attached to the back of the display panel; a second audio generation module spaced from the back of the display panel; and a frame for accommodating the first audio generation module and the second audio generation a module; wherein the first audio generation module includes a first exciter and a cylinder ring, the cylinder ring is inserted between the first exciter and the display panel, and the second audio generation module includes a first Two exciters and a vibrating plate, the first exciter of the first audio generation module is disposed away from the second exciter, the vibrating plate is spaced apart from the back of the display panel and a part of the frame, a A first air gap is formed at least partially between the back surface of the display panel and the vibration plate, and a second air gap is formed at least partially between the frame body and the vibration plate. The display device as described in claim 12 further comprises a speaker box for accommodating the frame body. The display device as described in claim 13, wherein the speaker box is located in the first area and the second area. The display device as described in claim 12, wherein the separation The partition between the first area and the second area includes a curved portion, and the curved portion has at least one curved surface facing the first audio generation module and the second audio generation module. The display device as described in claim 12, wherein the frame for accommodating the first audio generation module and the second audio generation module is disposed in the first area and the second area, and A third audio generation module is additionally disposed in the third area, the fourth area and the fifth area. The display device as described in claim 16, wherein the first area and the second area are located in a bottom area of the display panel, and the third area, the fourth area and the fifth area are located in the display panel a top area of the device is disposed above the first area and the second area at the same time. The display device as described in claim 16, wherein the first area, the second area and the third area are located at a bottom area of the display panel, and the fourth area and the fifth area are located at the display panel A top region of the device is disposed above the first region, the second region and the third region at the same time. The display device as described in claim 18, wherein the frame body disposed in the first area and the second area and the third audio generating module disposed in the third area are aligned in the same horizontal direction One of the extension lines above. The display device as described in claim 18, wherein the frame body disposed in the first area and the second area is aligned with an extension line in a horizontal direction, and the first frame disposed in the third area The three audio generating modules are spaced at a fixed distance from the extension line in the horizontal direction. The display device as described in claim 15, wherein the first audio generation module and the second audio generation module are vertically aligned with one end of the curved portion. The display device as described in claim 12, wherein the back cover is used for supporting the audio generating device, wherein the back cover comprises a first opening and a second opening, and the audio generating device is mounted on the audio generating device a first opening, and the second opening is used for releasing the rear audio generated by the second audio generating module of the audio generating device.

Images