KR20190012680A - Display apparatus - Google Patents

Abstract

According to an embodiment of the present specification, a display apparatus comprises: a display panel for displaying an image; and a plurality of sound output modules attached to the display panel to vibrate the display panel. At least one of the plurality of sound output modules outputs a first sound in a first direction, and at least one remaining sound output module outputs a second sound in a second direction different from the first direction, thereby outputting a sound in an audible frequency region having directivity. Therefore, reality and immersion of a viewer viewing an image of the display apparatus can be improved.

Description

DISPLAY APPARATUS

The present invention relates to a display device, and more particularly, to a display device capable of generating sound.

Recently, as the information age has come to the age of information, a display field for visually expressing electrical information signals has been rapidly developed. In response to this, various display devices having excellent performance in thinning, light weighting, Is being developed.

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

The liquid crystal display device includes an array substrate including a thin film transistor, an upper substrate including a color filter and / or a black matrix, and a liquid crystal layer between the array substrate and the upper substrate. The alignment of the liquid crystal layer is adjusted according to the electric field applied between two electrodes in the pixel region, and the transmittance of light is controlled according to the arrangement state to display an image.

The organic light emitting display device has attracted a great deal of attention because it has a response speed higher than that of other display devices, and has a high luminous efficiency, luminance, and viewing angle.

In general, a display device displays an image entirely on a display panel, but a separate speaker must be installed to provide sound. When the speaker is installed on the display device, the direction of sound generated through the speaker is a side end or an upper or lower end of the display panel, not the front or rear face of the display panel on which the image is displayed. There is a problem in that the viewer is prevented from being immersed in the image because the sound does not proceed.

Further, since the sound generated through the speaker proceeds to the side of the display panel or the top or bottom of the display panel, there is a problem that the sound quality is deteriorated due to interference with sounds reflected from the wall or the floor.

When a speaker included in a set device such as a TV or the like is constituted, the speaker occupies a certain space, so that there arises a problem that the design and the space arrangement of the set device are restricted.

Accordingly, the inventors of the present application recognized the above-mentioned problems, and various experiments were conducted to improve the sound quality of the sound when the image was viewed from the front of the display panel, . Through various experiments, it is possible to generate a sound such that the direction of sound progresses to the front of the display panel, and a new structure of a display device capable of improving sound quality is realized.

The present application provides a display device in which sound can be output in the front direction of the display panel.

The present application is to provide a display device capable of controlling the directionality of sound by controlling the vibration of the display panel.

The present application is to provide a display device capable of controlling the directionality of sound to concentrate sound in one place.

The present application is to provide a display device capable of maximizing realism and immersion by matching the positions where images and sound are generated.

The present invention provides a display device capable of improving a design aesthetic by omitting a space in which speakers are separately arranged in addition to the area of the display panel.

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

A display device according to the present application includes a display panel for displaying an image and a plurality of sound output modules attached to the display panel to vibrate the display panel so that at least one of the plurality of sound output modules transmits the first sound in the first direction And at least one of the other signals may output the second sound in a second direction different from the first direction.

A display device according to the present application includes a display panel for displaying an image, a plurality of sound output units attached to the display panel for vibrating the display panel, and a sound signal generating unit for generating a sound signal based on the sound data, And a vibration control unit for providing a sound signal to control the output direction of the sound by controlling the vibration of each of the plurality of sound output units.

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

The display device according to the present application can generate sound such that the direction of sound propagation is the front of the display panel. Therefore, it is possible to improve the immersion feeling of the viewer who watches the video of the display device by matching the video and sound generation positions of the display device.

The display device according to the present application can provide a display device capable of controlling the directionality of sound by controlling the vibration of the display panel to concentrate the sound in one place.

In addition, since the display device according to the present invention constitutes the acoustic output module attached to the rear surface of the display panel, it is unnecessary to separately construct a speaker, thereby improving the degree of freedom in arranging the speaker and improving the design aesthetics of the set device have.

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

The scope of the claims is not limited by the matters described in the contents of the invention, as the contents of the invention described in the problems, the solutions to the problems and the effects to be solved do not specify essential features of the claims.

1A is a rear view showing a display device according to an example of the present application.
FIG. 1B is a cross-sectional view taken along the line I-I 'of FIG. 1A.
2 is a view for explaining a vibration control section for providing a sound signal to each of a plurality of sound output units in a display apparatus according to the example of the present application.
3 is a view for explaining the directionality of sound outputted from the display device in the display device according to the example of the present application.
4A is a diagram illustrating a partition disposed between a plurality of sound output modules in a display device according to an example of the present application.
4B is a cross-sectional view taken along the cutting line II-II 'of FIG. 4A.
5A is a view for explaining a sound signal provided to a display panel in a display device according to the example of the present application.
FIG. 5B is a view for explaining the original vibration and the derivative vibration generated in the display panel according to the sound signal of FIG. 5A. FIG.
6A is a view for explaining a sound signal provided on a display panel in a display device according to the example of the present application.
6B is a view for explaining canceling vibration generated in the display panel according to the sound signal of Fig. 6A. Fig.
7A is a view for explaining a sound signal provided to a display panel in a display device according to the example of the present application.
FIG. 7B is a view for explaining a reinforcing vibration generated in the display panel according to the sound signal of FIG. 7A. FIG.
8A is a diagram for explaining a sound signal provided on a display panel in a display device according to the example of the present application.
FIG. 8B is a view for explaining the interference between the derivative vibration and the cancel vibration generated in the display panel according to the sound signal of FIG. 8A. FIG.
9A is a view for explaining a sound signal provided on a display panel in a display device according to the example of the present application.
FIG. 9B is a view for explaining the interference of the derivative vibration and the reinforcing vibration generated in the display panel according to the sound signal of FIG. 9A. FIG.
10A is a view for explaining a sound signal provided on a display panel in a display device according to the example of the present application.
FIG. 10B is a view for explaining the interference of the derivative vibration, the canceling vibration, the derivative vibration and the reinforcing vibration generated in the display panel according to the sound signal of FIG. 10A. FIG.
11 is a graph showing the directionality of sound outputted from the display device in the display device according to the example of the present application.

Brief Description of the Drawings The advantages and features of the present application, and how to accomplish them, will become apparent upon reference to the following detailed description, taken in conjunction with the accompanying drawings. It will be understood, however, that the invention is not limited to the examples disclosed herein but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art. Are provided to fully disclose the scope of the invention, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like described in the drawings for describing the example of the present application are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the description of the present application, a detailed description of known related arts will be omitted if it is determined that the gist of the present application may be unnecessarily obscured. In the case where the term "including", "having", or "being done" is used in the present application, other parts may be added unless "~" is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

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

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

In the case of a description of a temporal relationship, for example, if the temporal relationship is described by 'after', 'after', 'after', 'before', etc., May not be continuous unless they are not used.

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

In describing the components of the present application, the terms first and second can be used. These terms are intended to distinguish the components from other components, and the terms do not limit the nature, order, order, or number of the components. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; intervening "or that each component may be" connected, "" coupled, "or " connected" through other components.

The "display device" in the present application may include a display device such as a liquid crystal module (LCM) or an organic light emitting display module (OLED module) including a display panel and a driver for driving the display panel . And other equipment such as notebook computers, televisions, computer monitors, automotive displays, or other forms of vehicles, including complete products or final products including LCM, OLED modules, or a set electronic device or set device such as a mobile electronic device such as a display or smart phone or an electronic pad.

Accordingly, the display device of the present application may include a display device itself, such as an LCM, an OLED module or the like, and an application device including an LCM, an OLED module, or the like, or a set device which is an end consumer device.

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

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

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

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

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

The display panel in the present application can be applied to a vehicle as a user interface module, such as a central control panel in an automobile. For example, such a display panel may be implemented between the occupants of two front seats such that the vibrations of the display panel are propagated towards the interior of the vehicle. Thus, the audio experience in the vehicle can be improved compared to having a speaker only on the interior sides of the vehicle.

Each of the features of the various embodiments of the present application may be combined or combined with each other partially or entirely, technically various interlocking and driving are possible, and the examples may be independently performed with respect to each other, .

Hereinafter, an example of the present application will be described with reference to the accompanying drawings and examples.

FIG. 1A is a rear view showing a display device according to an example of the present application, and FIG. 1B is a sectional view taken along a line I-I 'shown in FIG. 1A.

1A and 1B, a display device includes a display panel 100 and an audio output unit 200. [

The display panel 100 displays an image and can be implemented as any type of display panel such as a liquid crystal display panel, an organic light emitting (OLED) display panel, and an electroluminescent display panel have.

The sound output unit 200 includes a plurality of sound output modules 200 arranged to overlap with the display panel 100. A plurality of sound output modules 200 may be attached to the display panel 100 to vibrate the display panel 100. At least one of the plurality of sound output modules 200 vibrates the display panel 100 to output the first sound in the first direction and at least one of the plurality of the sound output modules 200 vibrates the display panel 100, In a second direction different from the first direction. According to an example, each of the plurality of sound output modules 200 may be independently driven to control vibration of a part of the display panel 100 to which each of the plurality of sound output modules 200 is attached.

According to an example, the plurality of sound output modules 200 may include first and second sound output modules 201, 202. For example, the first sound output module 201 may be disposed in the left area of the display panel 100, and the second sound output module 202 may be disposed in the right area of the display panel 100. The first sound output module 201 vibrates the left area of the display panel 100 to output a first sound toward the front left side of the display panel 100 and the second sound output module 202 outputs the first sound toward the front side of the display panel 100 ) To vibrate the right area of the display panel 100 and output the second sound in the right front direction of the display panel 100. [ The first sound output module 201 provides the first sound to the viewer located on the front left side of the display panel 100 while the second sound output module 202 provides the first sound to the viewer located on the front right side of the display panel 100. [ Lt; RTI ID = 0.0 > 2 < / RTI > Here, the first sound and the second sound may be the same sound, or may be different sounds. For example, the first sound may correspond to the navigation sound of the vehicle, and the second sound may correspond to the entertainment sound of the vehicle, the music sound, or the DMB sound.

According to another example, the sound output unit 200 includes four sound output modules 200, and each of the four sound output modules 200 may be disposed on both upper and lower sides of the display panel 100. For example, each of the four sound output modules 200 may be disposed in the upper left, upper right, lower left, and lower right regions of the display panel 100. The sound output module 200 disposed in the upper left area of the display panel 100 can be used as a sound output source for a sound source (for example, a machine including a person, an animal, a speaker, Is located at the upper left side. The sound output module 200 disposed on the upper right area of the display panel 100 may be driven when the sound source is located on the upper right side of the image of the display panel 100. [ The sound output module 200 disposed at the lower left or lower right of the display panel 100 may be driven corresponding to the position of the sound source of the image of the display panel 100. [

Each of the plurality of sound output modules 200 includes a plurality of sound output units 210 attached to the display panel 100 to vibrate the display panel 100. The sound output unit 210 is disposed on a part of the rear surface of the display panel 100. The sound output unit 210 can provide vibration to the display panel 100 based on the sound signal. The display panel 100 can output sound in accordance with the vibration of the sound output unit 210. [ According to an example, the sound output unit 210 may be implemented as an actuator, an exciter, or an exciter for vibrating the display panel 100 by receiving an electric signal.

Each of the plurality of sound output units 210 is spaced apart from each other and can be independently driven according to a sound signal corresponding to each of the plurality of sound output units 210. [ Each of the plurality of sound output units 210 may or may not receive a sound signal to output sound corresponding to the image of the display panel 100. For example, the display device may select a sound output unit 210 to output sound corresponding to the image of the display panel 100, and provide a sound signal to the sound output unit 210. Therefore, since the sound output unit 210 can be driven corresponding to the sound source of the image, the sense of reality of the sound output corresponding to the image can be improved.

The more the sound output unit 210 is disposed, the more the position of the sound of the display device can be matched with the position of the sound source of the display panel 100, and the sense of reality felt by viewers watching the image can be further increased. As a result, the number, size, position, etc. of the sound output unit 210 can be realized to maximize the acoustic characteristics while not requiring excessive cost.

Each of the plurality of sound output modules 200 may include a plurality of enclosures 220 spaced apart from each of the plurality of sound output units 210. Specifically, each of the plurality of enclosures 220 surrounds each of the corresponding plurality of the sound output units 210, and receives a vibration from each of the plurality of sound output units 210, ). ≪ / RTI > For example, a part of the display panel 100 to which one enclosure 220 is attached receives vibrations of one acoustic output unit 210 corresponding to one enclosure 220, . Accordingly, the enclosure 220 can be arranged so that the vibration of the sound output unit 210 is efficiently transmitted to a part of the area of the display panel 100.

According to an example, the display panel 100 may be partitioned by a plurality of enclosures 220 corresponding to each of the plurality of sound output units 210. Each of the plurality of enclosures 220 surrounds a plurality of independently driven plurality of the sound output units 210 so that at least one sound output unit 210 is capable of independently controlling only a part of the area of the display panel 100 . Thus, the display apparatus vibrates only a part of the display panel 100 through the acoustic output unit 210 and the enclosure 220 constituted by one set, so that the image of the display panel 100 and the sound output through the sound output unit 210 It is possible to increase the sense of reality of the video by matching the generation positions of the sound and improve the immersion feeling of the viewer who watches the video. Further, since the display device does not need to constitute a speaker separately by constituting the acoustic output unit 210 attached to the rear surface of the display panel 100, it is possible to improve the degree of freedom in arranging the speakers and improve the design aesthetics of the set device .

2 is a view for explaining a vibration control section for providing a sound signal to each of a plurality of sound output units in a display apparatus according to the example of the present application.

2, the display device includes a vibration controller 300 (not shown) that provides a sound signal to each of the plurality of sound output modules 200 so that each of the plurality of sound output modules 200 outputs a first sound or a second sound, ). The vibration control unit 300 may be connected to each of the plurality of sound output units 210 to provide a sound signal to the sound output unit 210 requiring sound output. Specifically, the vibration control unit 300 can selectively control the sound output unit 210 disposed in each of the plurality of areas of the display panel 100 based on the image to be displayed on the display panel 100. The vibration control unit 300 selects a sound output unit 210 to output sound corresponding to the image of the display panel 100 and provides a sound signal so that the sound corresponding to the image is output from the selected sound output unit 210 can do.

The vibration control unit 300 generates a sound signal based on sound data and provides a sound signal to each of the plurality of sound output units 210 to control the vibration of each of the plurality of sound output units 210, Can be controlled. Specifically, the vibration control unit 300 may include a control unit and a driving unit. The control unit may extract sound data and sound position data based on the image input data displayed on the display panel 100. [ Here, the sound data includes frequency band information of the sound, and the acoustic position data may include position information of the sound source in the image of the display panel 100. [ The driving unit may generate a sound signal based on the sound data, and may provide a sound signal to the sound output unit 210 corresponding to the sound position data among the plurality of sound output units 210.

According to an example, the vibration control unit 300 may receive position information (or acoustic position data) of a sound source (for example, a machine including a person or a speaker) in an image of the display panel 100. The vibration control unit 300 can select the acoustic output unit 210 that needs to be driven based on the received position information. For example, when the sound source is located on the left side of the image of the display panel 100, the vibration control unit 300 receives the position information of the sound source and provides a sound signal to at least one sound output unit 210 disposed on the left side can do. For example, the vibration control unit 300 provides a frequency input to at least one acoustic output unit 210 disposed on the left side and does not provide a frequency input to at least one acoustic output unit 210 disposed on the right side . At least one sound output unit 210 disposed on the left vibrates the left area of the display panel 100 and at least one sound output unit 210 disposed on the right vibrates the right area of the display panel 100 Do not. Therefore, the viewer who views the image can feel the reality that the sound source in the image of the display panel 100 directly sounds.

3 is a view for explaining the directionality of sound outputted from the display device in the display device according to the example of the present application.

Referring to FIG. 3, the plurality of sound output modules 200 may include first and second sound output modules 201, 202. For example, the first sound output module 201 may be disposed in the left area of the display panel 100, and the second sound output module 202 may be disposed in the right area of the display panel 100. The first sound output module 201 vibrates the left area of the display panel 100 to output a first sound toward the front left side of the display panel 100 and the second sound output module 202 outputs the first sound toward the front side of the display panel 100 ) To vibrate the right area of the display panel 100 and output the second sound in the right front direction of the display panel 100. [ The first sound output module 201 provides the first sound to the viewer located on the front left side of the display panel 100 while the second sound output module 202 provides the first sound to the viewer located on the front right side of the display panel 100. [ Lt; RTI ID = 0.0 > 2 < / RTI > Here, the first sound and the second sound may be the same sound, or may be different sounds. For example, the first sound may correspond to the navigation sound of the vehicle, and the second sound may correspond to the entertainment sound of the vehicle, the music sound, or the DMB sound.

The display panel 100 can output sound having a frequency through the vibration of each of the plurality of sound output units 210. [ Here, the frequency of the sound can be determined according to the frequency per unit time of the sound output unit 210. According to an example, the acoustic frequencies output from the respective areas of the display panel 100 may cause interference with each other. For example, the acoustic frequency output from the first area of the display panel 100 may be combined with the acoustic frequency output from the second area to cause constructive interference or destructive interference. Here, the first area and the second area of the display panel 100 may be partitioned through the acoustic output unit 210 and the enclosure 220 constituted of one set, and may be disposed adjacent to each other. When a constructive interference occurs between the acoustic frequencies output from the first area and the second area of the display panel 100, the combined frequency of the acoustic frequencies output from the first area and the second area may be output. When the destructive interference occurs between the acoustic frequencies output from the first area and the second area of the display panel 100, a frequency corresponding to the difference between the acoustic frequencies output from the first area and the second area is output .

According to an example, the display panel 100 may receive the vibration of the sound output unit 210 and output sound in the audio frequency range through synthesis of the output sound frequency. Here, the audio frequency range may be 20 Hz to 20 kHz, but this is a fluidly varying value and is not necessarily limited thereto. Hereinafter, an embodiment of the present application will be described on the premise that the audible frequency range corresponds to 20 Hz to 20 kHz. For example, when the first area of the display panel 100 outputs sound having a frequency of 100 kHz and the second area outputs sound having a frequency of 101 kHz, the sound output from each of the first area and the second area The frequencies can be synthesized. When constructive interference occurs between the first area and the second areas of the display panel 100, sound having a frequency of 201 kHz, which is the sum of the acoustic frequencies of the first area and the second area, may be output. When destructive interference occurs between the first area and the second areas of the display panel 100, sound having a frequency equal to the difference between the acoustic frequencies of the first area and the second areas, that is, a frequency of 1 kHz, . As a result, each of the first region and the second region of the display panel 100 outputs sound (100 kHz, 101 kHz) outside the audible frequency region, and even when constructive interference occurs between the first and second protrusions 231 and 232 (201kHz) outside the audio frequency range is outputted, but when destructive interference occurs between the first and second protrusions 231 and 232, the sound (1kHz) in the audio frequency range can be output. Therefore, even if the display device outputs sound outside the audio frequency range through a part of the display panel 100, it is possible to provide the sound in the audio frequency range to the viewer through frequency synthesis. As described above, the display device can provide the sound in the audible frequency range having the directivity through the synthesis of the acoustic frequencies output from the display panel 100. [

According to one example, the vibration control unit 300 may provide a sound signal to a part of a plurality of sound output units 210, in order to provide audible frequency domain sound to the viewers located on one side of the display unit. The vibration control unit 300 can independently provide only a part of the plurality of sound output units 210 to provide audio in the audible frequency range only to viewers located in the desired area, It is possible to provide an external sound. Therefore, the display device controls the driving of the plurality of sound output units 210 through the vibration control unit 300, thereby generating the audible frequency range having the directivity by synthesizing the acoustic frequencies outputted from at least a part of the display panel 100 And the directionality of the sound can be controlled.

FIG. 4A is a view for explaining a partition arranged between a plurality of sound output modules in a display device according to an example of the present application, and FIG. 4B is a sectional view taken along a cutting line II-II 'of FIG. 4A.

Referring to FIGS. 4A and 4B, the display device may further include a partition 400 separating each of the plurality of sound output modules 200. Specifically, the partition 400 may be arranged to separate each of the plurality of sound output modules 200 in order to prevent interference of sound generated from each of the plurality of sound output modules 200. According to an example, the partition 400 may correspond to an air gap or a space that absorbs sound generated when each of the plurality of sound output modules 200 vibrates. Further, the partition 400 may correspond to an enclosure or a baffle, and is not limited to a term.

 The partition 400 may isolate the sound generated from each of the plurality of sound output modules 200. According to an example, the plurality of sound output modules 200 may include first and second sound output modules 201, 202. For example, the first sound output module 201 may be disposed in the left area of the display panel 100, and the second sound output module 202 may be disposed in the right area of the display panel 100. Since the partition 400 attenuates or absorbs the vibration of each of the first and second sound output modules 201 and 202, the sound generated by each of the first and second sound output modules 201 and 202 is transmitted to each other It can be prevented from being transmitted to the space. Thus, the partition 400 can improve the acoustic output characteristics of the display device by separating the sound of each of the plurality of sound output modules 200.

According to one example, the partition 400 may be made of polyurethane or polyolefin, but is not limited thereto. In addition, the partition 400 may be formed of a one-sided tape, a double-sided tape, or the like, and may be formed of a material having elasticity capable of being compressed to a certain extent.

FIG. 5A is a view for explaining a sound signal provided to a display panel in a display device according to the present application example, FIG. 5B is a view for explaining a source vibration and a derivative vibration generated in a display panel according to the sound signal in FIG. FIG.

5A and 5B, the vibration control unit 300 may be connected to each of the plurality of sound output units 210 to provide a sound signal to the sound output unit 210 requiring sound output. Specifically, the vibration control unit 300 can selectively control the sound output unit 210 disposed in each of the plurality of areas of the display panel 100 based on the image to be displayed on the display panel 100. The vibration control unit 300 selects a sound output unit 210 to output sound corresponding to the image of the display panel 100 and provides a sound signal so that the sound corresponding to the image is output from the selected sound output unit 210 can do.

According to one example, the display panel 100 may include a plurality of regions partitioned through the enclosure 220 and the acoustic output unit 210, which is a set of one set. For example, the display panel 100 may include a first area A1, a second area A2, and a third area A3. The plurality of acoustic output units 210 include a first acoustic output unit 211, a second acoustic output unit 213 and a third acoustic output unit 215, and the plurality of enclosures 220 And may include a first enclosure 221, a second enclosure 223, and a third enclosure 225. The first area of the display panel 100 is attached with the first sound output unit 211 and the first enclosure 221 and the second area is attached with the second sound output unit 213 and the second enclosure 223 And the third area may be attached with the third acoustic output unit 215 and the third enclosure 225. [ Thus, each of the first, second and third regions A1, A2, and A3 of the display panel 100 can be partitioned through the acoustic output unit 210 and the enclosure 220, which are configured as one set.

According to an example, the sound signal provided from the vibration control unit 300 may include a first signal S1. The first signal S1 may have a first amplitude and a first phase. The vibration control unit 300 may provide the first signal S1 to the first sound output unit 211 attached to the first area A1 of the display panel 100. [ For example, the first signal S1 may correspond to a sine wave having an amplitude of 10 [V]. Here, the amplitude of the first signal S1 can be set freely, and is not necessarily limited to the above example. The first sound output unit 211 may receive the first signal S1 to vibrate the first region A1 of the display panel 100 and may generate the first signal S1 that is generated in the first region A1 of the display panel 100 The vibration (V1) may have a magnitude of 10 (Amplitude). Here, the unit of the amplitude is relative to the comparison between the original vibration, the derivative vibration, the counter-vibration and the reinforcing vibration, and is not expressed as an absolute unit.

The first sound output unit 211 attached to the first area A1 of the display panel 100 and receiving the first signal S1 is connected to the first area A1 of the display panel 100, Thereby generating the original vibration. Here, the original vibration may correspond to the vibration directly transmitted to the display panel 100 from the vibration of the sound output unit 210. Further, the amplitude of the original vibration may be proportional to the amplitude of the sound signal.

When a circular vibration is generated in the first area A1 of the display panel 100, derivative vibrations are applied to the second area A2 and the third area A3 adjacent to the first area A1 Lt; / RTI > Here, the derivative vibration may correspond to the vibration transmitted along the display panel 100 in the vicinity of the display panel 100 when the original vibration occurs in a part of the display panel 100. In addition, the magnitude of the derived vibration is smaller than the amplitude of the original vibration, and can be reduced as the distance from the area where the original vibration occurs is.

According to an example, the enclosure 220 can reduce the magnitude of derivative vibration generated in a region adjacent to a partial region of the display panel 100 where the original vibration occurs. Specifically, the display panel 100 may be partitioned by each of a plurality of the in-closes 220 corresponding to each of the plurality of the sound output units 210. Each of the plurality of enclosures 220 surrounds a plurality of independently driven plurality of the sound output units 210 so that at least one sound output unit 210 is capable of independently controlling only a part of the area of the display panel 100 . For example, when the first sound output unit 211 receives the first signal S1 and vibrates the first area A1 of the display panel 100, the second area A2 of the display panel 100 And the third area A3 may be reduced by the first to third enclosures 221, 223, Accordingly, the enclosure 220 can prevent the vibrations generated in some areas of the display panel 100 from being transmitted to the adjacent areas.

FIG. 6A is a view for explaining a sound signal provided on a display panel in a display device according to the present application example, and FIG. 6B is a view for explaining a canceling vibration generated in a display panel according to the sound signal in FIG. 6A .

6A and 6B, the vibration control unit 300 may be connected to each of the plurality of sound output units 210 to provide a sound signal to the sound output unit 210 requiring sound output.

According to one example, the display panel 100 may include a plurality of regions partitioned through the enclosure 220 and the acoustic output unit 210, which is a set of one set. For example, the display panel 100 may include a first area A1, a second area A2, and a third area A3. The plurality of acoustic output units 210 include a first acoustic output unit 211, a second acoustic output unit 213 and a third acoustic output unit 215, and the plurality of enclosures 220 And may include a first enclosure 221, a second enclosure 223, and a third enclosure 225.

According to an example, the sound signal provided from the vibration control unit 300 may include a second signal S2. The second signal S2 may have a second amplitude that is less than the first amplitude of the first signal S1 and a second phase that is different from the first phase of the first signal S1. For example, the second signal S2 may have an amplitude of 3 [V] and may correspond to a sine wave having a second phase that is 180 degrees different from the phase of the first signal S1. Here, the amplitude of the second signal S2 can be freely set according to the magnitude of the derivative vibration, and is not necessarily limited to the above example. The second sound output unit 213 can receive the second signal S2 to vibrate the second area A2 of the display panel 100 and generate the second signal S2 that is generated in the second area A2 of the display panel 100 The vibration V2 may have an amplitude of -3. Here, the unit of the amplitude is relative to the comparison between the original vibration, the derivative vibration, the counter-vibration and the reinforcing vibration, and is not expressed as an absolute unit.

The second sound output unit 213 attached to the second area A2 of the display panel 100 and receiving the second signal S2 is connected to the second area A2 of the display panel 100, (Offset Vibration) can be generated. Here, the offset vibration may correspond to a vibration for extinguishing a derivative vibration generated in a part of the display panel 100. Therefore, the amplitude of the second signal S2 can be freely set according to the magnitude of the derivative vibration, and is not necessarily limited to the above example. The vibration control unit 300 may generate the canceling vibration by providing the second signal S2 in the region where the derivative vibration occurs in order to eliminate the derivative vibration generated in the partial area of the display panel 100. [ For example, the absolute value of the magnitude of the canceling vibration is equal to the magnitude of the magnitude of the derived vibration, and the direction of the canceling vibration may be opposite to the direction of the derived vibration. In addition, the magnitude of the canceling vibration (Amplitude) may be proportional to the amplitude of the second signal S2.

FIG. 7A is a view for explaining a sound signal provided on a display panel in a display device according to the present application example, and FIG. 7B is a view for explaining a reinforcing vibration generated in a display panel according to the sound signal in FIG. 7A .

7A and 7B, the vibration control unit 300 may be connected to each of the plurality of sound output units 210 to provide a sound signal to the sound output unit 210 requiring sound output.

According to one example, the display panel 100 may include a plurality of regions partitioned through the enclosure 220 and the acoustic output unit 210, which is a set of one set. For example, the display panel 100 may include a first area A1, a second area A2, and a third area A3. The plurality of acoustic output units 210 include a first acoustic output unit 211, a second acoustic output unit 213 and a third acoustic output unit 215, and the plurality of enclosures 220 And may include a first enclosure 221, a second enclosure 223, and a third enclosure 225.

According to an example, the sound signal provided from the vibration control unit 300 may include a third signal S3. The third signal S3 may have a third amplitude that is less than the first amplitude of the first signal S1 and a third phase that is equal to the first phase of the first signal S1. For example, the third signal S3 has an amplitude of 7 [V] and may correspond to a sine wave having a third phase that is the same as the phase of the first signal S1. Here, the amplitude of the third signal S3 can be set freely according to the magnitude of the derivative vibration, and is not necessarily limited to the above example. The third sound output unit 215 can receive the third signal S3 to vibrate the third area A3 of the display panel 100 and generate the third area A3 generated in the third area A3 of the display panel 100 Vibration (V3) can have a magnitude of 7 (Amplitude). Here, the unit of the amplitude is relative to the comparison between the original vibration, the derivative vibration, the counter-vibration and the reinforcing vibration, and is not expressed as an absolute unit.

The third sound output unit 215 attached to the third area A3 of the display panel 100 and receiving the third signal S3 is connected to the third area A3 of the display panel 100, (Reinforce Vibration) can be generated. Here, the reinforce vibration may generate the same vibration as the original vibration through constructive interference with the derivative vibration generated in a partial area of the display panel 100. [ In other words, the amplitude of the reinforcing vibration may correspond to the difference between the magnitude of the original vibration and the magnitude of the derived vibration. Accordingly, the vibration control unit 300 may generate the reinforcing vibration by providing the third signal S3 to the area where the derivative vibration occurs, in order to reinforce the derivative vibration generated in a part of the display panel 100. [ Therefore, the magnitude of the reinforcing vibration is equal to the difference between the size of the original vibration and the magnitude of the derived vibration, and the direction of the reinforcing vibration may be the same as the direction of the derived vibration. In addition, the amplitude of the reinforcing vibration may be proportional to the amplitude of the third signal S3.

FIG. 8A is a view for explaining a sound signal provided to the display panel in the display device according to the present application example, FIG. 8B is a diagram for explaining the interference between the derivative vibration and the canceling vibration generated in the display panel, Fig.

8A and 8B, the vibration control unit 300 may be connected to each of the plurality of sound output units 210 to provide a sound signal to the sound output unit 210 requiring sound output.

According to one example, the display panel 100 may include a plurality of regions partitioned through the enclosure 220 and the acoustic output unit 210, which is a set of one set. For example, the display panel 100 may include a first area A1, a second area A2, and a third area A3. The plurality of acoustic output units 210 include a first acoustic output unit 211, a second acoustic output unit 213 and a third acoustic output unit 215, and the plurality of enclosures 220 And may include a first enclosure 221, a second enclosure 223, and a third enclosure 225.

According to an example, the vibration control unit 300 may provide the first signal S1 to at least one of the plurality of sound output units 210, and provide the second signal S2 to at least one of the plurality of sound output units 210. [ The vibration control unit 300 may generate the original vibration by providing the first signal S1 to a part of the display panel 100. [ When the original vibration is generated in a part of the display panel 100, derivative vibration may occur in another area adjacent to a part of the display panel 100. The vibration control unit 300 may generate the offset signal by providing the second signal S2 to the area of the display panel 100 where the derivative vibration occurs. Here, the offset vibration may correspond to a vibration for extinguishing a derivative vibration generated in a part of the display panel 100. Therefore, the amplitude of the second signal S2 can be freely set according to the magnitude of the derivative vibration, and is not necessarily limited to the above example.

For example, the vibration control unit 300 may provide the first signal S1 to the first sound output unit 211 and the second signal S2 to the second sound output unit 213. [ When the first sound output unit 211 receives the first signal S1, the first sound output unit 211 can transmit the vibration to the first area A1 of the display panel 100. [ When the first sound output unit 211 receives the first signal S1, original vibration occurs in the first area A1 of the display panel 100, Derivative vibration may occur in the third region A3. The vibration control unit 300 may provide the second signal S2 to the second sound output unit 213 in order to eliminate the derivative vibration generated in the second area A2. Offset vibration may occur in the second area A2 of the display panel 100 when the second sound output unit 213 receives the second signal S2. Therefore, the second region A2 of the display panel 100 may be subject to destructive interference between the derivative signal generated from the first signal S1 and the destructive vibration generated from the second signal S2, so that no vibration may occur . As a result, the vibration control unit 300 provides the first signal S1 to the first sound output unit 211 and the second signal S2 to the second sound output unit 213, 100 to vibrate only the first area A1 of the first area A2 and prevent the vibration of the second area A2.

When the vibration control unit 300 provides the first signal S1 to the first sound output unit 211 and provides the second signal S2 to the second sound output unit 213, May be left in the third region A3. For example, the vibration control unit 300 may provide the second signal S2 to the third sound output unit 215 to vibrate the vibration of the third area A3 of the display panel 100, The third signal S3 may be provided to the third acoustic output unit 215 in order to generate the vibration having the magnitude of the original vibration.

According to one example, the display panel 100 can output sounds in an audible frequency range having directivity through frequency synthesis of sound generated based on original vibration in a plurality of first areas A1. More specifically, the vibration control unit 300 provides the first signal S1 to the sound output unit 210 disposed in a partial area of the display panel 100 to which the original vibration is to be generated, By providing the second signal S2 to the sound output unit 210 disposed in another area of the display panel 100, it is possible to output the sound in the audible frequency region having the directivity.

FIG. 9A is a view for explaining a sound signal provided to a display panel in a display device according to the present application example, FIG. 9B is a diagram for explaining the interference of a derivative vibration and a reinforcing vibration generated in a display panel Fig.

9A and 9B, the vibration control unit 300 may be connected to each of the plurality of sound output units 210 to provide a sound signal to the sound output unit 210 requiring sound output.

According to one example, the display panel 100 may include a plurality of regions partitioned through the enclosure 220 and the acoustic output unit 210, which is a set of one set. For example, the display panel 100 may include a first area A1, a second area A2, and a third area A3. The plurality of acoustic output units 210 include a first acoustic output unit 211, a second acoustic output unit 213 and a third acoustic output unit 215, and the plurality of enclosures 220 And may include a first enclosure 221, a second enclosure 223, and a third enclosure 225.

According to an example, the vibration control unit 300 may provide a first signal S1 to at least one of the plurality of sound output units 210, and a third signal S3 to at least one of the plurality of sound output units 210. [ The vibration control unit 300 may generate the original vibration by providing the first signal S1 to a part of the display panel 100. [ When the original vibration is generated in a part of the display panel 100, derivative vibration may occur in another area adjacent to a part of the display panel 100. The vibration control unit 300 may generate a reinforce vibration by providing a third signal S3 to an area of the display panel 100 where a derivative vibration occurs. Here, the reinforce vibration may generate the same vibration as the original vibration through constructive interference with the derivative vibration generated in a partial area of the display panel 100. [ Accordingly, the vibration control unit 300 may generate the reinforcing vibration by providing the third signal S3 to the area where the derivative vibration occurs, in order to reinforce the derivative vibration generated in a part of the display panel 100. [

For example, the vibration control unit 300 may provide the first signal S1 to the first acoustic output unit 211 and the third signal S3 to the third acoustic output unit 215. [ When the first sound output unit 211 receives the first signal S1, the first sound output unit 211 can transmit the vibration to the first area A1 of the display panel 100. [ When the first sound output unit 211 receives the first signal S1, original vibration occurs in the first area A1 of the display panel 100, Derivative vibration may occur in the third region A3. The vibration control unit 300 may provide the third signal S3 to the third sound output unit 215 to reinforce the derivative vibration generated in the third area A3. When the third sound output unit 215 receives the third signal S3, reinforce vibration may occur in the third area A3 of the display panel 100. [ Therefore, in the third area A3 of the display panel 100, the constructive interference of the derivative vibration generated from the first signal S1 and the canceling vibration generated from the third signal S3 occurs, May occur. As a result, the vibration control unit 300 provides the first signal S1 to the first sound output unit 211 and the third signal S3 to the third sound output unit 215, The first area A1 and the third area A3 of the first area 100 may be vibrated.

When the vibration control unit 300 provides the first signal S1 to the first acoustic output unit 211 and provides the third signal S3 to the third acoustic output unit 215, The second region A2 of the second region A2 may have a derivative vibration. For example, the vibration control unit 300 may provide the second signal S2 to the second sound output unit 213 to vibrate the vibration of the second area A2 of the display panel 100, (S3) to the second acoustic output unit (213) in order to generate vibration having the magnitude of the original vibration in the second acoustic output unit (A2).

FIG. 10A is a view for explaining a sound signal provided on the display panel in the display device according to the present application example, FIG. 10B is a graph showing the relationship between the derivative vibration and the canceling vibration generated in the display panel, Fig. 5 is a view for explaining the interference between vibration and reinforcing vibration; Fig.

10A and 10B, the vibration control unit 300 may be connected to each of the plurality of sound output units 210 to provide a sound signal to the sound output unit 210 requiring sound output.

According to one example, the display panel 100 may include a plurality of regions partitioned through the enclosure 220 and the acoustic output unit 210, which is a set of one set. For example, the display panel 100 may include a first area A1, a second area A2, and a third area A3. The plurality of acoustic output units 210 include a first acoustic output unit 211, a second acoustic output unit 213 and a third acoustic output unit 215, and the plurality of enclosures 220 And may include a first enclosure 221, a second enclosure 223, and a third enclosure 225.

According to one example, the vibration control unit 300 may provide a first signal S1 to at least one of the plurality of sound output units 210, a second signal S2 to at least one other, And may provide a third signal S3 to one. The vibration control unit 300 may generate the original vibration by providing the first signal S1 to a part of the display panel 100. [ When the original vibration is generated in a part of the display panel 100, derivative vibration may occur in another area adjacent to a part of the display panel 100. The vibration control unit 300 may generate a second signal S2 to generate an offset vibration or provide a third signal S3 to the area of the display panel 100 where the derivative vibration occurs, So that a reinforce vibration can be generated.

For example, the vibration control unit 300 may provide the first signal S1 to the first acoustic output unit 211, provide the second signal S2 to the second acoustic output unit 213, And may provide the third signal S3 to the sound output unit 215. [ When the first sound output unit 211 receives the first signal S1, the first sound output unit 211 can transmit the vibration to the first area A1 of the display panel 100. [ When the first sound output unit 211 receives the first signal S1, original vibration occurs in the first area A1 of the display panel 100, Derivative vibration may occur in the third region A3. The vibration control unit 300 may provide the second signal S2 to the second sound output unit 213 in order to eliminate the derivative vibration generated in the second area A2. Offset vibration may occur in the second area A2 of the display panel 100 when the second sound output unit 213 receives the second signal S2. Therefore, the second region A2 of the display panel 100 may be subject to destructive interference between the derivative signal generated from the first signal S1 and the destructive vibration generated from the second signal S2, so that no vibration may occur .

The vibration control unit 300 may provide the third signal S3 to the third sound output unit 215 to reinforce the derivative vibration generated in the third area A3. When the third sound output unit 215 receives the third signal S3, reinforce vibration may occur in the third area A3 of the display panel 100. [ Therefore, in the third area A3 of the display panel 100, the constructive interference of the derivative vibration generated from the first signal S1 and the canceling vibration generated from the third signal S3 occurs, May occur. As a result, the vibration control unit 300 provides the first signal S1 to the first acoustic output unit 211, the second signal S2 to the second acoustic output unit 213, The third signal S3 is provided to the output unit 215 so that only the first area A1 and the third area A3 of the display panel 100 are vibrated and the vibration of the second area A2 is suppressed .

According to one example, the display panel 100 includes a plurality of first regions A1 and a plurality of third regions A3, which are generated based on the original vibrations in the plurality of first regions A1, The sound of the audible frequency range having the directivity can be outputted through the frequency synthesis of the sound. More specifically, the vibration control unit 300 provides the first signal S1 to the sound output unit 210 disposed in a partial area of the display panel 100 to which the original vibration is to be generated, The sound output unit 210 provided in the remaining area of the display panel 100 to provide the second signal S2 to the sound output unit 210 disposed in another area of the display panel 100, The audio signal of the audible frequency range having the directivity can be outputted.

Therefore, the display device independently controls the vibrations of each of the plurality of areas of the display panel 100 by canceling or reinforcing the derivative vibration generated in the display panel 100, thereby outputting the sound in the audible frequency range having the directivity can do.

11 is a graph showing the directionality of sound outputted from the display device in the display device according to the example of the present application.

Referring to FIG. 11A, the display device outputs sound of the audible range in the direction of an angle of 60 to 80 degrees with respect to the display surface of the display panel 100, and outputs sound of an angle of 0 to 60 degrees, 80 to 180 degrees It is possible to output the sound of the non-audible area in the direction of the sound. The display device is provided with a first signal S1, a second signal S2, and a third signal S2 to each of the plurality of sound output units 210 so as to output audible sound in the direction of an angle of 60 to 80 degrees with respect to the front surface of the display panel 100. [ And may provide a signal S2 or a third signal S3. Specifically, the display device includes a display panel (not shown) for providing a first signal S1 to an acoustic output unit 210 disposed in a partial area of the display panel 100 to generate the original vibration, 100 to the sound output unit 210 disposed in the remaining area of the display panel 100 to which the vibration is to be amplified and the third signal S2 is supplied to the sound output unit 210 disposed in the other area of the display panel 100, Signal S3. Therefore, the display apparatus can be constructed by combining the sound generated on the basis of the original vibration in the plurality of first areas A1 and the frequency synthesized on the basis of the derivative vibration and the reinforcing vibration in the plurality of third areas A3 It is possible to output sound in the audible frequency range having directivity.

Referring to FIG. 11B, the display device outputs sound of an audible range in a direction of an angle of 100 to 120 degrees with respect to the display surface of the display panel 100, and outputs sound of an angle of 0 to 100 degrees, 120 to 180 degrees It is possible to output the sound of the non-audible area in the direction of the sound. The display device is provided with a first signal S1 and a second signal S2 to each of the plurality of sound output units 210 so as to output audible sound in the direction of an angle of 100 to 120 degrees with respect to the front face of the display panel 100. [ And may provide a signal S2 or a third signal S3. Specifically, the display device includes a display panel (not shown) for providing a first signal S1 to an acoustic output unit 210 disposed in a partial area of the display panel 100 to generate the original vibration, 100 to the sound output unit 210 disposed in the remaining area of the display panel 100 to which the vibration is to be amplified and the third signal S2 is supplied to the sound output unit 210 disposed in the other area of the display panel 100, Signal S3. Therefore, the display apparatus can be constructed by combining the sound generated on the basis of the original vibration in the plurality of first areas A1 and the frequency synthesized on the basis of the derivative vibration and the reinforcing vibration in the plurality of third areas A3 It is possible to output sound in the audible frequency range having directivity.

According to one example, at least one of the plurality of sound output modules provides a first sound in a direction of 60 to 80 degrees with respect to a display surface of the display panel, and at least one of the plurality of sound output modules And may provide a second sound in a direction of 100 degrees to 120 degrees. Here, the first sound and the second sound may be the same sound, or may be different sounds. For example, the first sound may correspond to the navigation sound of the vehicle, and the second sound may correspond to the entertainment sound of the vehicle, the music sound, or the DMB sound.

Thus, the display device can generate sound such that the direction of sound progresses to the front face of the display panel, thereby matching the position of the image of the display device with the location of the sound, thereby improving the immersion feeling of the viewer watching the image of the display device.

Further, the display device can provide a display device capable of controlling the directionality of the sound by controlling the vibration of the display panel to concentrate the sound in one place.

Further, since the display device does not need to constitute a speaker separately by constituting the acoustic output module attached to the rear surface of the display panel, it is possible to improve the degree of freedom in arranging the speaker and improve the design aesthetics of the set device.

The display device according to the present application can be applied to a flexible display device, a rollable display device, a curved display device, a wearable display device, a bendable display device, and the like But are not limited thereto.

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

A display device according to the present application includes a display panel for displaying an image and a plurality of sound output modules attached to the display panel to vibrate the display panel so that at least one of the plurality of sound output modules transmits the first sound in the first direction And at least one of the other outputs may output the second sound in a second direction different from the first direction.

According to some embodiments of the present application, the display apparatus may further include a vibration control section for providing a sound signal to each of the plurality of sound output modules so that each of the plurality of sound modules outputs the first sound or the second sound .

According to some embodiments of the present application, at least one of the plurality of sound output modules provides a first sound in a direction of 60 to 80 degrees with respect to the display surface of the display panel, To provide a second sound in a direction of 100 degrees to 120 degrees.

According to some embodiments of the present application, each of the plurality of sound output modules includes a plurality of sound output units for vibrating the display panel based on the sound signal, and a plurality of enclosures spaced apart from the plurality of sound output units .

According to some embodiments of the present application, the display device may further include a partition separating each of the plurality of sound output modules.

A display device according to the present application includes a display panel for displaying an image, a plurality of sound output units attached to the display panel for vibrating the display panel, and a sound signal generating unit for generating a sound signal based on the sound data, And a vibration control unit for providing a sound signal to control the output direction of the sound by controlling the vibration of each of the plurality of sound output units.

According to some embodiments of the present application, the sound signal includes a first signal having a first amplitude and a first phase, and a second signal having a second amplitude less than the first amplitude and a second phase different from the first phase .

According to some embodiments of the present application, the vibration control unit may provide the first signal to at least one of the plurality of sound output units, and provide the second signal to the remaining at least one sound output unit.

According to some embodiments of the present application, the first sound output unit attached to the first area of the display panel and receiving the first signal generates original vibration in the first area of the display panel, And a derivative vibration can be generated in the second region adjacent to the second region.

According to some embodiments of the present application, the second sound output unit attached to the second area of the display panel and receiving the second signal may cause Offset Vibration in the second area of the display panel.

According to some embodiments of the present application, the second area of the display panel may not experience vibration due to destructive interference and destructive interference of counteracting vibrations.

According to some embodiments of the present application, the display panel can output sound in an audible frequency range having directivity through frequency synthesis of sound generated based on original vibration in a plurality of first areas.

According to some embodiments of the present application, the sound signal may further comprise a third signal having a third amplitude less than the first amplitude and a third phase equal to the first phase.

According to some embodiments of the present application, the vibration control unit may provide a first signal to at least one of the plurality of sound output units, provide a second signal to at least one other, and provide a third signal to the remaining at least one .

According to some embodiments of the present application, the first sound output unit attached to the first area of the display panel and receiving the first signal generates original vibration in the first area of the display panel, A derivative vibration may be generated in the second region and the third region which are adjacent to each other.

According to some embodiments of the present application, the first sound output unit attached to the first area of the display panel and receiving the first signal generates original vibration in the first area of the display panel, A derivative vibration may be generated in the second region and the third region which are adjacent to each other.

According to some embodiments of the present application, the second area of the display panel may not experience vibration due to destructive interference and destructive interference of counteracting vibrations.

According to some embodiments of the present application, the third acoustic output unit attached to the third area of the display panel and receiving the third signal may cause a reinforce vibration in the third area of the display panel.

According to some embodiments of the present application, the third region of the display panel may generate vibration having the same magnitude as the original vibration through the constructive interference of the derivative vibration and the reinforcing vibration.

According to some embodiments of the present application, the display panel displays the sound generated based on the original vibration in the plurality of first areas and the frequency of the sound generated based on the derivative vibration and the reinforcing vibration in the plurality of third areas Through synthesis, it is possible to output sounds in the audible frequency range having directivity.

According to some embodiments of the present application, the display device may further include a plurality of enclosures spaced apart from each of the plurality of sound output units.

According to some embodiments of the present application, the display device may further include a partition separating the plurality of sound output units.

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 spirit or scope of the invention. Will be clear to those who have knowledge of. Therefore, the scope of the present application is to be defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present application.

100: Display panel
200: sound output section, sound output module
210: sound output unit
220: Enclosure
300:
400: partition

Claims (22)

A display panel for displaying an image; And
And a plurality of sound output modules attached to the display panel to vibrate the display panel,
Wherein at least one of the plurality of sound output modules outputs a first sound in a first direction and at least one of the other sounds outputs a second sound in a second direction different from the first direction. The method according to claim 1,
Further comprising a vibration control section for providing a sound signal to each of the plurality of sound output modules so that each of the plurality of sound modules outputs the first sound or the second sound. The method according to claim 1,
Wherein at least one of the plurality of sound output modules provides the first sound in a direction of 60 to 80 degrees with respect to a display surface of the display panel, And provides said second sound in a direction of from 120 degrees to 120 degrees. The method according to claim 1,
Wherein each of the plurality of sound output modules comprises:
A plurality of sound output units for oscillating the display panel based on the sound signal; And
And a plurality of enclosures spaced apart from each other of the plurality of sound output units. 5. The method according to any one of claims 1 to 4,
And a partition for separating each of the plurality of sound output modules. A display panel for displaying an image;
A plurality of sound output units attached to the display panel to vibrate the display panel; And
A vibration control unit for generating a sound signal based on the sound data, providing the sound signal to each of the plurality of sound output units, and controlling the output direction of sound by controlling the vibration of each of the plurality of sound output units Comprising a display device. The method according to claim 6,
Wherein the sound signal comprises:
A first signal having a first amplitude and a first phase; And
And a second signal having a second amplitude less than the first amplitude and a second phase different from the first phase. 8. The method of claim 7,
Wherein the vibration control unit provides the first signal to at least one of the plurality of sound output units and provides the second signal to at least one of the plurality of sound output units. 8. The method of claim 7,
A first sound output unit attached to a first area of the display panel and receiving the first signal generates an original vibration in a first area of the display panel and a second area adjacent to the first area, Wherein the display device generates a derivative vibration in the display device. 10. The method of claim 9,
And the second sound output unit attached to the second area of the display panel and receiving the second signal generates offset vibration in the second area of the display panel. 11. The method of claim 10,
And the second region of the display panel does not generate vibration due to the destructive interference and the destructive interference of the destructive vibration. 10. The method of claim 9,
Wherein the display panel outputs sound in an audible frequency range having directivity through frequency synthesis of sound generated based on original vibration in a plurality of first areas. 8. The method of claim 7,
Wherein the sound signal further comprises a third signal having a third amplitude less than the first amplitude and a third phase equal to the first phase. 14. The method of claim 13,
Wherein the vibration control unit provides the first signal to at least one of the plurality of sound output units and provides the second signal to at least one other acoustic unit and provides the third signal to at least one of the other acoustic output units. 14. The method of claim 13,
A first sound output unit attached to a first area of the display panel and receiving the first signal generates an original vibration in a first area of the display panel and a second area adjacent to the first area, And derivative vibration is generated in the third area. 16. The method of claim 15,
And the second sound output unit attached to the second area of the display panel and receiving the second signal generates offset vibration in the second area of the display panel. 17. The method of claim 16,
And the second region of the display panel does not generate vibration due to the destructive interference and the destructive interference of the destructive vibration. 17. The method of claim 16,
And a third acoustic output unit attached to a third area of the display panel and receiving the third signal generates a reinforce vibration in a third area of the display panel. 19. The method of claim 18,
Wherein the third region of the display panel generates vibration having the same magnitude as the original vibration through the constructive interference of the derivative vibration and the reinforcing vibration. 19. The method of claim 18,
The display panel displays the audible frequency having the directivity through the frequency synthesis of the sound generated based on the original vibration in the plurality of first areas and the sound generated based on the derivative vibration and the reinforcing vibration in the plurality of third areas And outputs the sound of the area. 21. The method according to any one of claims 6 to 20,
Further comprising a plurality of enclosures spaced apart from each other of the plurality of sound output units. 21. The method according to any one of claims 6 to 20,
And a partition separating the plurality of sound output units.

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