Display device and computing device including the same

Abstract

A display device and a computing device including the display device are disclosed. The display device includes: a display module including a display panel configured to display an image; a vibration plate located on a rear surface of the display module; a connecting member located between the rear surface of the display module and the vibration plate; at least one vibration module located on the vibration plate; and a surrounding member located between the rear surface of the display module and the vibration plate, the surrounding member being spaced apart from the vibration module and surrounding the vibration module.

Description

[0001] This application is a divisional application of the original invention patent application with application number 201910734596.0 (application date: August 9, 2019, invention name: display device and computing device including the display device). Technical Field

[0002] The present disclosure relates to a display device and a computing device including the display device. Background Art

[0003] Typically, a display device may be equipped in home appliances or electronic devices such as televisions (TVs), monitors, laptop computers, smart phones, tablet computers, electronic notepads, electronic tablets, wearable devices, watch phones, portable information devices, navigation devices, and automobile control display devices, and used as a screen for displaying images.

[0004] The display apparatus may include a display panel for displaying an image and a sound device for outputting a sound associated with the image.

[0005] However, in display devices such as televisions and monitors, because the sound output from the sound device may travel in a backward or downward direction toward the display device, the sound quality may be reduced due to interference between the sound reflected from the walls and the ground. In this way, the immersive experience of the viewer may be reduced.

[0006] In addition, in the sound device (or speaker) included in a general computing device such as a laptop or tablet computer, it is difficult to achieve high sound quality, especially the basic sound of the low pitch is insufficient. Moreover, with the weight reduction and miniaturization of the system body, it is difficult to produce low-pitched sounds of 1kHz or lower and high-pitched sounds of 4kHz or higher. In addition, the sound device of the general computing device is arranged on the lower side of the keyboard and the bottom surface (floor), left surface and right surface of the body and is separated from the screen. In this way, the sense of difference (or sense of mismatch) caused by the distance difference between the image and the sound reduces the immersive experience of the viewer. In other words, in the speaker of the general computing device, since the output direction of the sound is not toward the viewer's ear, the sound of the mid-pitched or high-pitched vocal cord with strong linearity of 2kHz or higher will not be directly transmitted to the viewer and may be lost or distorted. Summary of the invention

[0007] Accordingly, the present disclosure is directed to a display device and a computing device including the same that substantially obviate one or more problems due to limitations and disadvantages of the related art.

[0008] One aspect of the present disclosure is to provide a display device which outputs sound using vibration of a display module and / or a display panel and a computing device including the display device.

[0009] Another aspect of the present disclosure is to provide a display device which improves sound characteristics of a low-pitched vocal range and a computing device including the display device.

[0010] Additional features and aspects will be set forth in the following description, and in part will be apparent from the description, or may be learned by practicing the inventive concepts provided herein. Other features and aspects of the inventive concepts may be realized and obtained by the structures specifically pointed out in the written description, or may be derived therefrom, and may also be realized and obtained from the attached claims and drawings.

[0011] To achieve these and other aspects of the inventive concept, as specifically implemented and broadly described, a display device is provided, the display device comprising: a display module, the display module comprising a display panel configured to display an image; a vibration plate, the vibration plate being located on a rear surface of the display module; a connecting member, the connecting member being located between the rear surface of the display module and the vibration plate; a vibration module, the vibration module being located on the vibration plate; and a surrounding member, the surrounding member being located between the rear surface of the display module and the vibration plate, the surrounding member being spaced apart from the vibration module, the surrounding member surrounding the vibration module.

[0012] On the other hand, a computing device is provided, which includes: a system body, a display device, and the display device includes: a display module, the display module including a display panel configured to display an image; a vibration plate, the vibration plate is located on the rear surface of the display module; a connecting member, the connecting member is located between the rear surface of the display module and the vibration plate; a vibration module, the vibration module is located on the vibration plate; and a surrounding member, the surrounding member is located between the rear surface of the display module and the vibration plate, the surrounding member is separated from the vibration module, and the surrounding member surrounds the vibration module; and a hinge part, the hinge part is located between the system body and the display device, and the hinge part is configured to support the display device rotatably.

[0013] Other systems, methods, features and advantages will be or will become apparent to those skilled in the art by studying the following drawings and detailed description. It is intended that all such additional systems, methods, features and advantages be included within this specification, be within the scope of the present disclosure, and be protected by the appended claims. Nothing in this section shall be construed as limiting these claims. Other aspects and advantages are discussed below in conjunction with embodiments of the present disclosure. It should be understood that the foregoing general description and the following detailed description of the present disclosure are exemplary and illustrative, and are intended to provide further description of the claimed disclosure.

[0014] Note 1. A display device, comprising:

[0015] A display module, the display module comprising a display panel configured to display an image;

[0016] a vibration plate, the vibration plate being on a rear surface of the display module;

[0017] a connecting member, the connecting member being between the rear surface of the display module and the vibration plate;

[0018] at least one vibration module on a surface of the vibration plate facing a rear surface of the display module; and

[0019] A surrounding member is between the display module and the vibration plate, the surrounding member is spaced apart from the vibration module, and surrounds the vibration module.

[0020] Supplementary note 2. The display device according to Supplementary note 1, wherein the connecting member surrounds the surrounding piece.

[0021] Supplement 3. The display device according to Supplement 1, further comprising a first air gap between the display module and the vibration plate; and

[0022] The first air gap includes at least one second air gap surrounding at least one of the vibration modules.

[0023] Note 4. The display device according to Note 1, wherein the surrounding piece includes one or more of a double-sided tape, a double-sided adhesive pad, and a double-sided foam pad.

[0024] Supplement 5. The display device according to Supplement 1, wherein:

[0025] The vibration module includes a vibration generating device provided on a surface of the vibration plate facing a rear surface of the display module through an adhesive member,

[0026] The vibration generating device comprises:

[0027] a pair of first side portions parallel to the first direction, each of the pair of first side portions having a first length; and

[0028] a pair of second side portions parallel to a second direction intersecting the first direction, each of the pair of second side portions having a second length, and

[0029] A first distance between each of the pair of second side portions of the vibration generating device and the surrounding member is 1 to 3 times the first length with respect to the first direction.

[0030] Supplementary note 6. The display device according to Supplementary note 5, wherein a second distance between each of the pair of first side portions of the vibration generating device and the surrounding member is 0.5 to 1.5 times the second length relative to the second direction.

[0031] Supplementary note 7. The display device according to Supplementary note 5, wherein, in the vibration generating device, the first length is shorter than the second length.

[0032] Supplement 8. The display device according to Supplement 5, wherein the surrounding member comprises:

[0033] a first surrounding member, the first surrounding member being spaced apart from the vibration generating device and parallel to the first direction;

[0034] a second surrounding member, wherein the second surrounding member is parallel to the first surrounding member, and the vibration generating device is located between the second surrounding member and the first surrounding member;

[0035] a third surrounding member spaced apart from the vibration generating device and parallel to the second direction; and

[0036] A fourth surrounding member, wherein the fourth surrounding member is parallel to the third surrounding member, and the vibration generating device is located between the fourth surrounding member and the third surrounding member.

[0037] Supplement 9. The display device according to Supplement 5, wherein the vibration generating device includes a piezoelectric material layer.

[0038] Supplementary note 10. The display device according to Supplementary note 1, further comprising a protection member facing the vibration module on a rear surface of the display module.

[0039] Supplementary note 11. The display device according to Supplementary note 1, further comprising a protection member on a surface of the vibration module facing a rear surface of the display module.

[0040] Note 12. The display device according to Note 1, wherein the display module comprises:

[0041] a panel guide configured to support an outer periphery of a rear surface of the display panel;

[0042] a backlight unit, the backlight unit being located on a rear surface of the display panel; and

[0043] A support cover, the support cover being configured as:

[0044] supporting the panel guide; and

[0045] accommodating the backlight unit,

[0046] The vibration plate is located on the rear surface of the support cover, and

[0047] Each of the connection member and the surrounding piece is located between a rear surface of the support cover and the vibration plate.

[0048] Supplementary note 13. The display device according to Supplementary note 12, further comprising a protection member on a rear surface of the support cover facing the vibration module.

[0049] Supplement 14. The display device according to Supplement 12, wherein:

[0050] The support cover includes an opening facing the vibration module, and

[0051] The size of the opening is wider than that of the vibration module.

[0052] Supplement 15. The display device according to Supplement 1, wherein:

[0053] The display panel includes a plurality of pixels, each of the plurality of pixels includes a light emitting device;

[0054] The vibration plate is located on the rear surface of the display panel, and

[0055] Each of the connection member and the surrounding piece is located between a rear surface of the support cover and the vibration plate.

[0056] Supplement 16. The display device according to Supplement 1, further comprising a system back cover located on the rear surface of the vibration plate, a third air gap being provided between the system back cover and the rear surface of the vibration plate, the system back cover comprising:

[0057] a rear structure covering a rear surface of the vibration plate; and

[0058] A side structure surrounds a side surface of the display module, and a boundary gap is formed between the side surface of the display module and the side structure.

[0059] Supplement 17. The display device according to Supplement 16, further comprising a system front cover covering an outer periphery of a front surface of the display module and the boundary gap, the system front cover comprising at least one sound-emitting portion overlapping the boundary gap.

[0060] Supplementary note 18. The display device according to Supplementary note 1, wherein the vibration plate includes one or more of the following: magnesium Mg, aluminum Al, an Al alloy material, a Mg alloy material, and a magnesium-lithium (Mg—Li) alloy material.

[0061] Note 19. A computing device, comprising:

[0062] System subject;

[0063] The display device according to any one of Supplement 1 to Supplement 18; and

[0064] A hinge portion is located between the system body and the display device, and is configured to rotatably support the display device.

[0065] Note 20. The computing device according to Note 19, further comprising an embedded speaker in the system body. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] The accompanying drawings, which may be included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain various principles of the disclosure.

[0067] Figure 1 is a cross-sectional view showing a display device according to an embodiment of the present disclosure.

[0068] Figure 2 A computing device according to an embodiment of the present disclosure is shown.

[0069] Figure 3 According to an embodiment of the present invention, Figure 2 A cross-sectional view taken along line II' shown in FIG.

[0070] Figure 4 is along Figure 2 A cross-sectional view along line II-II' is shown in FIG.

[0071] Figure 5 According to another embodiment of the present disclosure, Figure 2 A cross-sectional view taken along line II' shown in FIG.

[0072] Figure 6 According to another embodiment of the present disclosure, Figure 2 A cross-sectional view taken along line II' shown in FIG.

[0073] Figure 7 According to another embodiment of the present disclosure, Figure 2 A cross-sectional view taken along line II' shown in FIG.

[0074] Figure 8 Shown according to Figure 3 The surrounding piece of the first embodiment of the present disclosure is shown.

[0075] Fig. 9 Shown according to Figure 3 A surround of a second embodiment of the present disclosure is shown in FIG.

[0076] Fig.10 Shown according to Figure 3 A surround according to a third embodiment of the present disclosure is shown.

[0077] Fig.11 Shown according to Figure 3 A surrounding piece of a fourth embodiment of the present disclosure is shown in FIG.

[0078] Fig.12 Shown according to Figure 3 A surround of a fifth embodiment of the present disclosure is shown.

[0079] Fig.13 Shown according to Figure 3 A surround of a sixth embodiment of the present disclosure is shown.

[0080] Fig.14 A computing device according to another embodiment of the present disclosure is shown.

[0081] Fig.15 A display device according to another embodiment of the present disclosure is shown.

[0082] Fig.16 is a graph showing experimental results of total harmonic distortion characteristics of a display device according to a comparative example.

[0083] Fig.17 : is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to a first embodiment of the present disclosure.

[0084] Fig.18 is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to a second embodiment of the present disclosure.

[0085] Fig.19 is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to a third embodiment of the present disclosure.

[0086] Fig. 20 is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to a fourth embodiment of the present disclosure.

[0087] Fig.21is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to a fifth embodiment of the present disclosure.

[0088] Fig. 22 is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to a sixth embodiment of the present disclosure.

[0089] Fig.23 is a graph showing experimental results of total harmonic distortion characteristics of a computing device according to a comparative example and total harmonic distortion characteristics of a computing device according to an embodiment of the present disclosure.

[0090] Fig.24 is a graph showing experimental results of the sound pressure characteristics of a computing device according to a comparative example and the sound pressure characteristics of a computing device according to an embodiment of the present disclosure.

[0091] Throughout the drawings and detailed description, unless otherwise described, the same drawing reference numerals should be understood to refer to the same elements, features, and structures. The relative sizes and descriptions of these elements may be exaggerated for clarity, illustration, and convenience. DETAILED DESCRIPTION

[0092] Reference will now be made in detail to embodiments of the present disclosure, examples of which may be shown in the accompanying drawings. In the following description, when it is determined that a detailed description of a known function or configuration associated with this document does not necessarily obscure the subject matter of the inventive concept, its detailed description will be omitted. The described process steps and / or operations are examples; however, except for the steps and / or operations that must occur in a particular order, the order of the steps and / or operations is not limited to the order described herein and may be changed as known in the art. The same reference numerals always represent the same elements. The names of the various elements used in the following description are selected only for the convenience of writing the specification and may therefore be different from the names of the elements used in the actual product.

[0093] The advantages and features of the present disclosure and methods for implementing the same will be explained by the following embodiments described with reference to the accompanying drawings. However, the present disclosure can be implemented in different forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. In addition, the present disclosure is limited only by the scope of the claims.

[0094] The shapes, sizes, ratios, angles, and quantities disclosed in the drawings used to describe the embodiments of the present disclosure are merely examples, and therefore, the present disclosure is not limited to the details shown. The same reference numerals always represent the same elements. In the following description, when it is determined that the detailed description of the related known technology unnecessarily obscures the focus of the present disclosure, the detailed description will be omitted.

[0095] When “including,” “having,” and “comprising” described in the present specification are used, another part may be added unless “only” is used. Terms in the singular form may include plural forms unless otherwise specified.

[0096] In interpreting an element, although there is no explicit description, the element is interpreted as including an error range.

[0097] When describing a positional relationship, for example, when the positional relationship between two parts is described as, for example, "upper," "above," "lower," and "next," unless "immediately adjacent" or "directly" is used, one or more other parts may be set between the two parts.

[0098] When describing a time relationship, for example, when a time sequence is described as "after," "subsequently," "afterwards," and "before," discontinuous cases may be included unless "just," "immediately," or "directly" is used.

[0099] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present disclosure.

[0100] When describing the elements of the present disclosure, terms such as "first", "second", "A", "B", "(a)", "(b)", etc. may be used. These terms are intended to identify the corresponding elements from other elements, and the nature, order or quantity of the corresponding elements should not be limited by the terms. Unless otherwise specified, the expression that one element is "connected", "coupled" or "adhered" to another element or layer may refer not only to being directly connected or adhered to another element or layer, but also to being indirectly connected or adhered to another element or layer, wherein one or more intermediate elements or layers are "disposed" between the one element or layer and the other element or layer.

[0101] The term "at least one" should be understood to include any and all combinations of one or more of the related listed items. For example, the meaning of "at least one of the first, second, and third items" means the combination of all items proposed from two or more of the first, second, and third items.

[0102] In the description of the embodiments, when one structure is described as being "on or above" or "below or below" another structure, the description should be interpreted as including a case where the structures are in contact with each other and a case where a third structure is disposed therebetween. The size and thickness of each element shown in the drawings are given only for the convenience of description, and the embodiments of the present disclosure are not limited thereto.

[0103] As can be fully understood by those skilled in the art, the features of the various embodiments of the present disclosure can be partially or entirely connected or combined with each other, and can be mutually operated and technically driven differently from each other. The embodiments of the present disclosure can be performed independently of each other, or can be performed together in a mutually dependent relationship.

[0104] Hereinafter, a display device according to an embodiment of the present disclosure and a computing device including the same will be described in detail with reference to the accompanying drawings.

[0105] Figure 1 is a cross-sectional view of a display device according to an embodiment of the present disclosure.

[0106] Reference Figure 1 , a display apparatus according to an embodiment of the present disclosure may include a display module 100 , a vibration plate 200 , a connection member (or coupling member) 300 , a vibration module 400 , and a surrounding member 500 .

[0107] The display module 100 may include a display panel 110 that can display an image. The display panel 110 may be configured to display an image via the front surface of the display panel. The rear surface of the display panel may be defined as a surface of the display panel that is opposite to and / or away from its front surface. The display module 100 according to an embodiment of the present disclosure may include a first rear region and a second rear region, which may be parallel to each other and have a rear middle portion. The first rear region, the second rear region, and the rear middle portion may be included in the rear surface of the display module. The rear surface of the display module 100 may be defined as a surface of the display module that is opposite to or away from the rear surface of the display module 100, which may correspond to the front surface of the display module 100. The front surface of the display module 100 may correspond to the front surface of the display panel 110. That is, the front surface of the display module 100 may correspond to the surface of the display module 100 via which the image is displayed.

[0108] The display panel 110 may be one of display panels such as a liquid crystal display panel, a light-emitting display panel, an electrophoretic display panel, a micro-light-emitting diode display panel, a plasma display panel, an electrowetting display panel, and a quantum dot light-emitting display panel. Hereinafter, for ease of description, a liquid crystal display (LCD) device including the display panel 110 or a light-emitting display device including a light-emitting display panel will be described, but embodiments of the present disclosure are not limited thereto.

[0109] The vibration plate 200 may be coupled or connected to the display module 100 through a coupling or connecting member 300. The vibration plate 200 according to the embodiment may be formed in a plate shape including a metal material, and may face the rear surface of the display module 100. For example, the vibration plate 200 may have the same size as that of the rear surface of the display module 100, or may have a size that enables the vibration plate 200 to cover the entire rear surface of the display module 100. Similarly, the front surface of the vibration plate 200 may be defined as a surface of the vibration plate 200 that faces the rear surface of the display module 100. The rear surface of the vibration plate 200 may be defined as a surface of the vibration plate 200 that is opposite to or away from the front surface of the vibration plate 200.

[0110] The vibration plate 200 according to an embodiment of the present disclosure may include one or more of the following: magnesium (Mg), aluminum (Al), Al alloy material, Mg alloy material, and MgLi (lithium) alloy material. For example, the Mg alloy material may include one or more of the following: Al, zinc (Zn), and manganese (Mn). The magnesium alloy material may be a very light metal material for a mechanical structure, may have a relatively high non-rigidity (strength / specific gravity) and a relatively high vibration damping capability (e.g., the ability to absorb and gradually reduce vibration), and may have good dimensional stability with respect to changes over time and temperature.

[0111] When the vibration plate 200 according to an embodiment of the present disclosure includes one of the above-mentioned materials, a fine sound can be achieved due to the reactivity (response time) of fast sound based on density, and due to high non-rigidity, a sound having an entire vocal cord including a low-pitched vocal cord to a high-pitched vocal cord can be achieved based on a fast sound velocity. Moreover, when the internal loss is large due to the high vibration reduction capability, undesirable vibration may not occur. Therefore, residual sound and reflected sound or resonant sound are suppressed or reduced, thereby enabling the original sound to be reproduced or generated. Moreover, the vibration plate 200 can have high elasticity. Therefore, a high-pitched sound of 40kHz or higher can be achieved.

[0112] The vibration plate 200 according to an embodiment of the present disclosure may be located on the rear surface of the display module 100 through a coupling or connecting member 300, with a first air gap AG1 therebetween, and therefore, may cover the rear surface of the display module 100 and may be spaced apart from the rear surface of the display module 100. For example, the vibration plate 200 may have a thickness of 0.1 mm to 2.0 mm, for example, for enhancing the sound of a high-pitched vocal cord. For example, if the thickness of the vibration plate 200 is less than 0.1 mm, it may be difficult to maintain the flatness of the vibration plate 200, and the vibration plate 200 may be torn when vibrating. On the other hand, if the thickness of the vibration plate 200 is greater than 2.0 mm, the vibration plate 200 may be suitable for achieving a low-pitched sound rather than a high-pitched sound.

[0113] The connecting member 300 may be located between the rear surface of the display module 100 and the vibration plate 200. Therefore, the first air gap AG1 may be provided between the rear surface of the display module 100 and the vibration plate 200. For example, the first air gap AG1 may be a sealed space between the rear surface of the display module 100 and the vibration plate 200, which is sealed by the connecting member 300. That is, the connecting member 300 may be provided between the rear surface of the display module 100 and the front surface of the vibration plate 200.

[0114] The connection member 300 may be located between an edge or periphery of the vibration plate 200 and a periphery of the rear surface of the display module 100. Therefore, the vibration plate 200 may be fixed to the rear surface of the display module 100, and a first air gap AG1 may be provided between the rear surface of the display module 100 and the vibration plate 200. The first air gap AG1 may be a vibration space that may vibrate the vibration plate 200 and may vibrate the display module 100 based on the vibration of the vibration plate 200.

[0115] The connection member 300 according to an embodiment of the present disclosure may include a double-sided tape and / or an adhesive resin. The double-sided tape may include a pad or a foam pad having a certain height (or a certain thickness). The adhesive resin may include an acrylic-based material or a urethane-based material, but is not limited thereto. For example, in order to minimize or reduce the vibration of the vibration plate 200 directly transmitted to the display module 100, the adhesive resin may include a urethane-based material having a relatively ductile property instead of an acrylic-based material.

[0116] The vibration module 400 may be located on the vibration plate 200 and may vibrate according to a sound driving signal (or a vibration driving signal) input to the vibration module 400 to allow the vibration plate 200 to vibrate. The vibration module 400 may include a plurality of vibration generating devices 410 and 430 attached or disposed on the vibration plate 200 via a first adhesive member 412 and a second adhesive member 432, respectively. Specifically, the vibration module 400 may be disposed on the front surface of the vibration plate 200.

[0117] The vibration module 400 may include a first vibration generating device 410 and a second vibration generating device 430 .

[0118] The first vibration generating device 410 may be disposed in the first rear region of the display module 100. For example, the first vibration generating device 410 may be attached to or disposed on one side or a portion of the vibration plate 200 overlapping the first rear region of the display module 100 through a first adhesive member 412.

[0119] The second vibration generating device 430 may be disposed in or corresponding to the second rear area of ​​the display module 100. For example, the second vibration generating device 430 may be attached to or disposed on the other side or another portion of the vibration plate 200 overlapping the second rear area of ​​the display module 100 through the second adhesive member 432.

[0120] The first adhesive member 412 and the second adhesive member 432 may each include a double-sided tape and / or a natural curable adhesive. The first adhesive member 412 and the second adhesive member 432 may each include a thermosetting adhesive and / or a light-curing adhesive. For example, the properties of the first vibration generating device 410 and the second vibration generating device 430 may be reduced by the heat used in the curing process of curing the first adhesive member 412 and the second adhesive member 432.

[0121] Each of the first vibration generating device 410 and the second vibration generating device 430 according to an embodiment of the present disclosure may be disposed on the front surface of the vibration plate 200 to face the rear surface of the display module 100. For example, in order to reduce or prevent the rear surface of the display module 100 from physically contacting the first vibration generating device 410 and the second vibration generating device 430 that may vibrate based on a sound driving signal input therein, the first vibration generating device 410 and the second vibration generating device 430 may be spaced apart from the rear surface of the display module 100 by a predetermined distance, and the distance between the display module 100 and each of the first vibration generating device 410 and the second vibration generating device 430 may be adjusted or set based on the height (or thickness) of the connection member 300. Therefore, relative to the thickness direction Z of the display module 100, the height (or thickness) of the connecting member 300 can be relatively greater than the distance between the front surface of the vibration plate 200 and the front surface of each of the first vibration generating device 410 and the second vibration generating device 430, thereby preventing or reducing the first vibration generating device 410 and the second vibration generating device 430 from being damaged due to direct physical contact between the display module 100 and each of the first vibration generating device 410 and the second vibration generating device 430.

[0122] The first vibration generating device 410 and the second vibration generating device 430 according to an embodiment of the present disclosure may each have a first length along a first direction X, and may each have a second length along a second direction Y intersecting the first direction X. For example, the first length of each of the first vibration generating device 410 and the second vibration generating device 430 may be shorter than the second length, but is not limited thereto. For example, the first length of each of the first vibration generating device 410 and the second vibration generating device 430 may be equal to or longer than the second length. The first direction may correspond to the width or width direction of the display module and / or the display panel. The second direction may correspond to the height or height direction of the display module and / or the display panel.

[0123] In another example, each of the first vibration generating device 410 and the second vibration generating device 430 according to an embodiment of the present disclosure may be located on a rear surface of the vibration plate 200 opposite to the front surface of the vibration plate 200 .

[0124] Each of the first vibration generating device 410 and the second vibration generating device 430 according to an embodiment of the present disclosure may include a piezoelectric material layer having a piezoelectric effect, a first electrode on a front surface of the piezoelectric material layer, and a second electrode on a rear surface of the piezoelectric material layer.

[0125] The piezoelectric material layer may include a piezoelectric material that can vibrate according to an electric field. For example, the piezoelectric material may have a property in which, when pressure is applied due to an external force or distortion occurs in the crystal structure, dielectric polarization based on a change in the relative positions of positive (+) ions and negative (-) ions may cause a potential difference, and vibration may occur due to an electric field based on an applied voltage.

[0126] The piezoelectric material layer according to an embodiment of the present disclosure may include: a piezoelectric material containing a polymer material, a piezoelectric material containing a thin film material, a piezoelectric material containing a composite material, and / or a piezoelectric material containing a single crystal ceramic or a polycrystalline ceramic. Examples of piezoelectric materials containing polymer materials include polyvinylidene fluoride (PVDF), polyvinylidene fluoride trifluoroethylene P (VDF-TrFe) and P (VDFTeFE). Examples of piezoelectric materials containing thin film materials may include zinc oxide (ZnO), cadmium sulfide (CdS) and aluminum nitride (AlN). Examples of piezoelectric materials containing composite materials include lead zirconate titanate (PZT)-polyvinylidene fluoride (PVDF) (e.g., PZT-PVDF), PZT-silicone rubber, PZT-epoxy resin, PZT-foam polymer and PZT-foam polyurethane. Examples of piezoelectric materials containing single crystal ceramics may include one or more of: α-aluminum phosphate (α-AlPO4, Berlinate), α-silicon dioxide (α-SiO2), lithium niobate (LiNbO3), terbium molybdate (Tb2(MoO4)3), lithium borate (or lithium tetraborate) (Li2B4O7), and zinc oxide. Examples of piezoelectric materials containing polycrystalline ceramics include PZT-based materials, PT-based materials, PZT composite perovskite-based materials, and barium titanate (BaTiO3).

[0127] The first electrode and the second electrode according to the embodiment of the present disclosure may overlap each other with a piezoelectric material layer therebetween. The first electrode and the second electrode may each include an opaque metal material having a relatively low resistance and good heat dissipation characteristics, but is not limited thereto. For example, the first electrode and the second electrode may each include a transparent conductive material and / or a conductive polymer material.

[0128] The first vibration generating device 410 and the second vibration generating device 430 may each have a relatively small area and thus may have sound characteristics of a high-pitched vocal cord, thereby increasing the sound pressure of the high-pitched vocal cord and the frequency characteristics of the high-pitched vocal cord of the sound generated based on the vibration of the display module 100. For example, the frequency of the high-pitched vocal cord may be, for example, 3 kHz or higher, but is not limited thereto.

[0129] The surrounding piece 500 may be spaced apart from the vibration module 400, and may be disposed between the rear surface of the display module 100 and the vibration plate 200, and may surround the vibration module 400. And therefore, the surrounding piece 500 may provide a second air gap AG2 surrounding the vibration module 400 and / or may be included in the first air gap AG1 between the rear surface of the display module 100 and the vibration plate 200 provided by the connection member 300. For example, the second air gap AG2 may be a sealed space or a vibration space sealed by the surrounding piece 500, a sealed space or a vibration space sealed between the rear surface of the display module 100 and the vibration plate 200 (i.e., the front surface of the vibration plate 200) (which may face each other and the vibration module 400 is located therebetween). The surrounding piece 500 may be surrounded by the connection member 300.

[0130] The surrounding piece 500 according to an embodiment of the present disclosure may be a double-sided tape having a certain height (or a certain thickness). For example, the surrounding piece 500 may include one or more of the following: a double-sided tape, a double-sided adhesive pad, and a double-sided foam tape. One surface of the surrounding piece 500 may be attached to or disposed on the rear surface of the display module 100, and the other surface of the surrounding piece 500 may be attached to or disposed on the front surface of the vibration plate 200.

[0131] The surround 500 according to an embodiment of the present disclosure may be disposed near the vibration module 400 , and may reduce or prevent or attenuate undesired vibration of the vibration plate 200 caused by vibration of the vibration module 400 .

[0132] The vibration plate 200 may have a plate shape of a relatively wide size (or area). Therefore, horizontal vibration or eccentric vibration caused by the vibration of the vibration module 400 may occur. When a vibration signal of 1kHz is input, the entire part of the vibration plate 200 may vibrate at the same 1kHz, but when the entire part of the vibration plate 200 does not vibrate at the same frequency, horizontal vibration may occur. Horizontal vibration may cause undesirable vibration of the vibration plate 200. When friction and hum or noise occur due to horizontal vibration or undesirable vibration of the vibration plate 200, the total harmonic distortion (THD) of the vibration plate 200 may increase. For example, when the vibration plate 200 vibrates, excessive peak vibration may occur due to mutual overlap in the peripheral area of ​​the vibration module 400, or excessive tilt vibration may occur due to mutual offset, thereby reducing the sound pressure characteristics and sound quality characteristics.

[0133] The total harmonic distortion characteristic appears when a signal that is not actually input appears in the output due to the nonlinearity of a sound device such as a speaker, and is a method of showing the nonlinearity of the sound device. For example, the total harmonic distortion characteristic appears when a pure tone or pure sound is input to the sound device, and a frequency that is not input appears in the output due to harmonic distortion, wherein harmonics corresponding to integer multiples (e.g., two, three, and four times) of the pure sound appear in the output. Harmonic distortion may occur when a sound source signal that may be equal to or greater than the input limit of the sound device is input and a waveform may be clipped, and when the total harmonic distortion characteristic value increases as the harmonic component increases, harmonic distortion may occur, and the distortion of the waveform may be severe.

[0134] The total harmonic distortion characteristic can be expressed as the ratio of the sum of the root mean square (RMS) values ​​of the total harmonics to the RMS value of the fundamental wave. For example, the total harmonic distortion characteristic can be expressed as the ratio (%) of frequencies other than 1kHz that appear when a vibration signal of 1kHz is input. The total harmonic distortion characteristic appears as the harmonic component increases, obtaining a high value. As the total harmonic distortion characteristic value increases, the distortion of the waveform may be severe.

[0135] For example, when noise is in the sound source, the noise may be amplified together with the sound source when the sound source is amplified, and thus, the total harmonic distortion characteristics may increase. When friction and humming occur due to the vibration of the vibration plate 200, the total harmonic distortion characteristics may increase. As the total harmonic distortion characteristics increase, the ratio of the original sound may be reduced to cause distortion of the original sound or reduce the sound pressure characteristics and the sound characteristics. For example, when a display device that outputs sound according to the vibration of the display module 100 has a total harmonic distortion characteristic of 5% or less in a sound band of 2kHz or more and a total harmonic distortion characteristic of 15% or less in a sound band of less than 2kHz, the sound pressure characteristics and the sound characteristics may be enhanced.

[0136] The surrounding piece 500 according to the embodiment of the present disclosure can be located in the horizontal vibration area of ​​the vibration plate 200, and can surround the vibration module 400, and can be used as a damper to prevent (or weaken) the horizontal vibration (or unwanted vibration) of the vibration plate 200, thereby reducing the total harmonic distortion characteristics of the vibration plate 200, thereby improving the sound quality and sound pressure characteristics of the display device. For example, the first distance between the surrounding piece 500 and each of the vibration generating devices 410 and the vibration generating devices 430 can be a distance of 1 to 3 times the first length of each of the vibration generating devices 410 and the vibration generating devices 430 relative to the first direction X. Moreover, the second distance between the surrounding piece 500 and each of the vibration generating devices 410 and the vibration generating devices 430 can be a distance of 0.5 (half) to 1.5 times the second length of each of the vibration generating devices 410 and the vibration generating devices 430 relative to the second direction Y.

[0137] The surrounding piece 500 according to an embodiment of the present disclosure may include a first surrounding piece 510 and a second surrounding piece 530 .

[0138] The first surrounding member 510 may be located between the rear surface of the display module 100 and the vibration plate 200 , and may surround the first vibration generating device 410 and may prevent or reduce horizontal vibration or undesired vibration of the vibration plate 200 occurring near the first vibration generating device 410 .

[0139] The second surrounding member 530 may be located between the rear surface of the display module 100 and the vibration plate 200 , and may surround the second vibration generating device 430 and may prevent or reduce horizontal vibration or undesired vibration of the vibration plate 200 occurring near the second vibration generating device 430 .

[0140] The display device according to an embodiment of the present disclosure may further include a system back cover 600 .

[0141] The system back cover 600 may accommodate the vibration plate 200 and the display module 100 coupled or connected to the vibration module 400. The system back cover 600 may include a rear structure 610 and a side structure 630.

[0142] The rear structure 610 (the outermost rear structure located on the rear surface of the display device) may support the display module 100 and may cover or overlap the rear surface of the vibration plate 200 with the third air gap AG3 therebetween.

[0143] The side structure 630 (the outermost side structure located on the side surface of the display device) can be set on the edge or periphery of the rear structure 610, and can cover the side surface of the display module 100 and the side surface of the vibration plate 200, and there is a boundary gap BG between the side structure 630 and the side surface of the display module 100 and the side surface of the vibration plate 200.

[0144] The system back cover 600 according to the embodiment of the present disclosure may further include a rear sound member 650 .

[0145] The rear sound member 650 may be located in an inner corner portion of the system rear cover 600. For example, the rear sound member 650 may protrude from a corner of each of the rear structure 610 and the side structure 630, or may be installed in a corner of each of the rear structure 610 and the side structure 630. For example, the rear sound member 650 may be referred to as a "sound guide member," "rear sound guide member," or "rear sound guide," but the term is not limited thereto.

[0146] The rear sound member 650 according to an embodiment of the present disclosure may include an inclined surface or a curved surface each facing the third air gap AG3 and the boundary gap BG. The rear sound member 650 may guide the travel path of the rear sound traveling toward the boundary gap BG via the third air gap AG3 in the direction toward the front surface of the display panel 110. For example, the rear sound RSW that may be generated in the third air gap AG3 based on the vibration of the vibration plate 200 may be output in the direction toward the front surface of the display panel 110, and therefore, may serve as an edge sound or a peripheral sound ESW.

[0147] The display device according to an embodiment of the present disclosure may include a display module 100, which may vibrate based on the vibration of the vibration plate 200, and may be performed based on the vibration of the vibration module 400 according to the sound driving signal input therein. Therefore, the display module 100 may output the first sound wave (i.e., the panel sound PSW) generated based on the vibration of the display module 100 toward the front area in front of the display panel 110, thereby outputting high-quality sound of a wide sound band, realizing a sound field that can completely fill the entire screen, and the immersion experience of the viewer can be enhanced due to the harmony (or matching) between the image and the sound. In addition, the display device according to an embodiment of the present disclosure may include a surrounding member 500, which may be located near the vibration module 400 to prevent (or attenuate) the horizontal vibration of the vibration plate 200 that may vibrate based on the vibration of the vibration module 400. Therefore, the total harmonic distortion characteristics of the vibration plate 200 can be reduced, thereby improving the sound quality and sound pressure characteristics. Moreover, in the display device according to the embodiment of the present disclosure, the first sound wave or panel sound PSW can be generated based on the vibration of the display module 100 and can be directly output toward the front area in front of the display panel 110. In addition, the second sound wave or rear sound (or vibration sound of the vibration plate) or edge or peripheral sound ESW that can be generated based on the vibration of the vibration plate 200 can be output toward the front area in front of the display panel 110 via the third air gap AG3 and the boundary gap BG, rather than toward the rear area behind the display panel 110 and / or the lower area below, thereby accurately delivering the sound and improving the sound quality to increase the immersive experience of the viewer. For example, the sound linearity of the mid-tone or high-tone vocal cord with 2kHz to 20kHz is very strong. Therefore, even when the sound should be output toward the ear of the viewer, the sound can be delivered to the viewer without losing or distorting the sound. However, the sound of the mid-tone or high-tone vocal cord that can be output from the lower speaker and / or rear speaker equipped in the display device of the related art cannot be normally delivered to the viewer due to its output direction. On the other hand, in the display device according to the embodiment of the present disclosure, when the panel sound PSW and the edge or peripheral sound ESW (both traveling toward the viewer's ears) are output toward the front area in front of the display panel 110, the sound of the middle-pitched or high-pitched vocal cords can be directly delivered to the audience without losing or distorting the sound. Therefore, a sound substantially similar to the original sound can be provided to the viewer.

[0148] Figure 2 A computing device according to an embodiment of the present disclosure is shown. Figure 3 According to the embodiment of the present disclosure Figure 2 A cross-sectional view taken along line II' shown in FIG. Figure 4 is along Figure 2 A cross-sectional view taken along line II-II' shown in FIG.

[0149] Reference Figures 2 to 4 For example, a computing device according to an embodiment of the present disclosure may include a system body 10, a hinge portion 20, and a display device 30, and the display device 30 may be rotatably coupled or connected to the system body 10 through the hinge portion 20.

[0150] The system main body 10 may include a main board, various circuits mounted on the main board, various storage media, peripheral devices, a keyboard, a power supply device, etc. The various circuits mounted on the main board may include a central control circuit for processing various information, an image processing circuit for processing data according to the control of the central control circuit, a sound processing circuit for processing sound according to the control of the central control circuit, etc. The system main body 10 may process various information, may generate video data and sound signals, and may provide the processed information, the generated video data, and the sound signals to the display device 30.

[0151] The hinge part 20 may be installed between the system body 10 and the display device 30 , and may rotatably support a lower portion of the display device 30 .

[0152] The display device 30 may be rotatably installed in the hinge portion 20 and may cover the upper surface of the system body 10, or may be unfolded at a certain angle from the upper surface of the system body 10 with the hinge portion 20 as a rotation axis. The display device 30 may be configured to display an image corresponding to video data provided from the system body 10 based on a timing control signal provided from the system body 10, and may output a panel sound PSW and an edge or peripheral sound ESW corresponding to a sound signal provided from the system body 10. For example, the sound signal may be synchronized with the image signal, but the embodiment is not limited thereto.

[0153] The display apparatus 30 according to an embodiment of the present disclosure may include a display module 100 , a vibration plate 200 , a connection member 300 , a vibration module 400 , a surround 500 , a system back cover 600 , and a system front cover 700 .

[0154] The display module 100 may include a display panel 110 , a panel driving circuit unit 120 , a backlight unit 130 , a panel guide 140 , and a support cover 150 .

[0155] The display panel 110 may display an image using light irradiated from the backlight unit 130 , and may include a lower substrate 111 , an upper substrate 112 , a lower polarization member 113 , and an upper polarization member 114 .

[0156] The lower substrate 111, which may be a thin film transistor (TFT) array substrate, may include a pixel array including a plurality of pixels respectively disposed in a plurality of pixel regions defined by intersections of a plurality of gate lines and a plurality of data lines. Each of the plurality of pixels may include a TFT connected to the gate line and a data line corresponding thereto, a pixel electrode connected to the TFT, and a common electrode, which may be adjacent to the pixel electrode and may be supplied with a common voltage.

[0157] The lower substrate 111 may further include a pad portion in a first periphery thereof and a gate driving circuit in a second periphery thereof.

[0158] The pad portion may provide the pixel array and the gate driving circuit with signals provided from the outside. For example, the pad portion may include a plurality of data pads connected to a plurality of data lines through a plurality of data link lines and a plurality of gate input pads connected to the gate driving circuit via a gate control signal line.

[0159] The gate driving circuit may be embedded (or integrated) in the first peripheral region of the lower substrate 111 to be connected to the plurality of gate lines in a one-to-one relationship. For example, the gate driving circuit may be a shift register including a transistor, which may be formed by the same process as that of forming a TFT in each of the pixel regions. As another example, the gate driving circuit may be in the panel driving circuit unit 120 without being embedded in the lower substrate 111.

[0160] The upper substrate 112 (color filter array substrate) may include a pixel pattern that may define an opening area overlapping each of the pixel areas on the lower substrate 111, and a color filter layer in the opening area. The upper substrate 112 may be attached to the lower substrate 111 with a liquid crystal layer therebetween by a sealant.

[0161] The liquid crystal layer may be located between the lower substrate 111 and the upper substrate 112 and may include liquid crystal including liquid crystal molecules having an alignment direction that may change based on an electric field generated from a data voltage and a common voltage applied to a pixel electrode in each of a plurality of pixels.

[0162] The lower polarization member 113 may be located on a lower surface of the lower substrate 111 , and may polarize light irradiated from the backlight unit 130 to a first polarization axis to irradiate the polarized light onto the lower substrate 111 .

[0163] The upper polarization member 114 may be disposed on an upper surface of the upper substrate 112 , and may polarize light passing through the upper substrate 112 , and may be output to the outside.

[0164] The display panel 110 may drive a liquid crystal layer according to an electric field generated by a data voltage and a common voltage applied to a pixel electrode in each of a plurality of pixels, thereby displaying an image by using light passing through the liquid crystal layer.

[0165] The panel driving circuit unit 120 may be connected to a pad portion provided in the display panel 110, and may display an image corresponding to video data provided from the system body 10 based on an output of each pixel. The panel driving circuit unit 120 according to an embodiment may include a plurality of data flexible circuit films 121, a plurality of data driving integrated circuits (ICs) 123, a printed circuit board (PCB) 125, and a timing control circuit 127.

[0166] Each of the plurality of data flexible circuit films 121 may be attached to a pad portion on the lower substrate 111 of the display panel 110 via, for example, a film attachment process or a tape automated bonding process. Each of the plurality of data flexible circuit films 121 may be bent to surround a side surface of each of the display panel 110 and the backlight unit 130, and may be connected to the PCB 125 at a rear surface of the support cover 150.

[0167] Each of the plurality of data driver ICs 123 may be individually mounted on a corresponding data flexible circuit film of the plurality of data flexible circuit films 121. Each of the plurality of data driver ICs 123 may receive pixel data and a data control signal provided from the timing control circuit 127, may convert the pixel data into a pixel-based analog data signal according to the data control signal, and may provide the analog data signal to a corresponding data line. As another example, each of the plurality of data driver ICs 123 may be directly mounted on the first periphery of the lower substrate 111 via a die bonding process, and may be connected to a plurality of data lines. In this case, the plurality of data flexible circuit films 121 may be omitted.

[0168] The PCB 125 may be connected to the plurality of data flexible circuit films 121. The PCB 125 may support the timing control circuit 127, and may transfer signals and power between elements of the panel driving circuit unit 120. The PCB 125 may include a user connector 125a connected to the system body 10 through a cable, and a first sound output connector 125b and a second sound output connector 125c connected to the vibration module 400.

[0169] The timing control circuit 127 may be mounted on the PCB 125, and may receive the video data and the timing synchronization signal provided from the system body 10 through the user connector 125a of the PCB 125. The timing control circuit 127 may align the video data based on the timing synchronization signal to generate pixel data suitable for the pixel arrangement structure of the display panel 110, and may provide the generated pixel data to the data driver IC 123. In addition, the timing control circuit 127 may generate a data control signal and a gate control signal based on the timing synchronization signal. Therefore, the timing control circuit 127 may control the driving timing of each of the plurality of data driver ICs 123 through the data control signal, and may control the driving timing of the gate driver circuit using the gate control signal.

[0170] The panel driving circuit unit 120 may also include a plurality of data flexible circuit films and a plurality of gate driving ICs instead of a gate driving circuit. For example, the lower substrate 111 of the display panel 110 may also include a gate pad portion, which may be disposed in a third periphery thereof and may include a plurality of gate pads connected to a plurality of gate lines through a plurality of gate link lines.

[0171] Each of the plurality of gate flexible circuit films may be attached to the gate pad portion on the lower substrate 111 of the display panel 110 via a film attachment process. Each of the plurality of gate flexible circuit films may be bent to the side surface of the display panel 110. Each of the plurality of gate driver ICs may be individually mounted on a corresponding gate flexible circuit film among the plurality of gate flexible circuit films. Each of the plurality of gate driver ICs may receive a gate control signal provided from the timing control circuit 127 through a gate input pad, may generate a gate pulse according to the gate control signal, and may provide the gate pulse to the gate line in a predetermined order. As another example, each of the plurality of gate driver ICs may be directly mounted on the third periphery of the lower substrate 111 via a chip bonding process, connected to the plurality of gate lines, and may be connected to the gate input pad on the lower substrate 111. In this case, the plurality of gate flexible circuit films may be omitted.

[0172] The backlight unit 130 may be located on the rear surface of the display panel 110 or face the rear surface of the display panel 110, and may irradiate light onto the rear surface of the display panel 110. The backlight unit 130 according to an embodiment of the present disclosure may include a light guide plate 131, a light source unit 133, a reflective sheet 135, and an optical sheet portion 137.

[0173] The light guide plate 131 may include a light incident surface that may overlap the display panel 110 and may be disposed on one sidewall of the light guide plate 131. The light guide plate 131 may include a light-transmitting plastic or glass material. The light guide plate 131 may transfer (or output) light that may be incident from the light source unit 133 through the light incident surface to the display panel 110.

[0174] The light source unit 133 may irradiate light onto the light incident surface in the light guide plate 131. The light source unit 133 according to an embodiment of the present disclosure may include a light source PCB 133a and a plurality of light emitting diodes (LEDs) 133b, which may be mounted on the light source PCB 133a and may irradiate light onto the light incident surface of the light guide plate 131. The light source unit 133 may be covered by a light source housing. The light source housing may cover the front surface of the panel guide 140 and the edge or periphery of the optical sheet portion 137 adjacent to each other with the light source unit 133 therebetween, and may cover the upper portion of the light source unit 133.

[0175] The reflective sheet 135 may cover the rear surface of the light guide plate 131. The reflective sheet 135 may reflect light that may be incident from the light guide plate 131 toward the light guide plate 131 to minimize or reduce loss of light.

[0176] The optical sheet portion 137 may be on the front surface of the light guide plate 131, and may enhance the brightness characteristics of the light output from the light guide plate 131. The optical sheet portion 137 according to an embodiment of the present disclosure may include a lower diffuser sheet, a lower prism sheet, and an upper prism sheet, but is not limited thereto. For example, the optical sheet portion 137 may include a stacked combination of one or more sheets of a diffuser sheet, a prism sheet, a dual brightness enhancement film (DBEF), and a double convex lens sheet, or may include a composite sheet having a light diffusion function and a light focusing function. According to an embodiment of the present disclosure, when a sound may be output or generated based on the vibration of the display panel 110 in response to the vibration of the vibration plate 200, the vibration loss of the vibration plate 200 may be minimized or reduced when the vibration is transmitted to the display panel 110. The optical sheet unit according to an embodiment of the present disclosure may include a composite sheet having a light diffusion function and a light focusing function.

[0177] The panel guide 140 may be received in the support cover 150, and may support the light source unit 133 and the periphery of the rear surface of the display panel 110. The panel guide 140 may include a panel support portion 141 that may support the periphery of the rear surface of the display panel 110, and a cover coupling or connecting portion 143 that may be recessed from the outer surface of the panel support portion.

[0178] The support cover 150 may support the panel guide 140. The support cover 150 may include a metal material, a plastic material, etc. For example, in order to ensure the rigidity and heat dissipation characteristics of the backlight unit 130, the support cover 150 may include a metal material. The support cover 150 according to an embodiment of the present disclosure may include a cover plate 151 and a side cover 153.

[0179] The cover plate 151 may cover the rear surface of the backlight unit 130 and thus may support the reflective sheet 135 and the panel guide 140 of the backlight unit 130. For example, the panel guide 140 may be attached to or disposed on the cover plate 151 via an adhesive member such as a double-sided tape.

[0180] The side cover 153 may be vertically disposed from the periphery of the front surface of the cover plate 151 and may surround the outer sidewall of the panel guide 140. For example, the side cover 153 may be inserted into the cover connection part 143 of the panel guide 140 and thus may not protrude outside the outer surface of the panel guide 140.

[0181] The display module 100 according to an embodiment of the present disclosure may further include a light blocking member 160. The light blocking member 160 may cover the front surface of the panel guide 140 adjacent to the light source unit 133 and the edge or periphery of the light source PCB 133a of the light source unit 133 and the optical sheet portion 137 adjacent to the light source unit 133, thereby preventing or reducing light leakage of the light source unit 133. A portion of the light blocking member 160 may extend to cover the periphery of the outer surface of the panel guide 140 adjacent to the light source unit 133, the side cover 153 of the support cover 150, and the rear surface of the cover plate 151. The light blocking member 160 according to an embodiment of the present disclosure may be a black single-sided tape, but is not limited thereto.

[0182] The display module 100 according to an embodiment of the present disclosure may further include a panel coupling or connecting member 170. The panel coupling or connecting member 170 may be located between the periphery of the rear surface of the display panel 110 and the panel guide 140, and may attach the display panel 110 to the panel guide 140. For example, the display panel 110 may be attached to or disposed on the panel guide 140 through the panel connecting member 170. The panel connecting member 170 overlapping the backlight unit 130 may be attached to or disposed on the light blocking member 160. The panel connecting member 170 according to an embodiment of the present disclosure may be a double-sided tape or a double-sided foam tape, but is not limited thereto.

[0183] The display module 100 may display an image using light provided to the display panel 110 from the backlight unit 130, and may output a panel sound PSW and an edge or peripheral sound ESW generated based on the vibration of the display panel 110 in response to the vibration of the vibration plate 200 toward a front area in front of the display panel 110 (e.g., in the direction toward the viewer's face). For example, the display module 100 may have a thin (or slender) structure, for example, having a thickness of 4 mm or less, to have the same vibration amount as the vibration plate 200.

[0184] The vibration plate 200 may be coupled or connected to the rear surface of the display module 100. The vibration plate 200 may be coupled or connected to the rear surface of the support cover 150 through the connection member 300 with the first air gap AG1 therebetween. The vibration plate 200 may include at least one of the above-mentioned metal materials, and repeated descriptions thereof are omitted.

[0185] The connection member 300 may be located between the cover plate 151 of the support cover 150 and the vibration plate 200. The connection member 300 may support the vibration plate 200 and may provide a first air gap AG1 between the display module 100 (e.g., the reflective sheet 135) and the vibration plate 200. The first air gap AG1 may be a sealed space or a vibration space for vibrating the vibration plate 200. The connection member 300 according to an embodiment of the present disclosure may overlap an edge or a peripheral portion of the light guide plate 131.

[0186] The vibration module 400 may be disposed on the front surface of the vibration plate 200 to directly face the rear surface of the display module 100 (e.g., the cover plate 151 of the support cover 150). The vibration module 400 may vibrate based on a sound driving signal (which may be directly input from the system body 10), or may be indirectly input through the PCB 125 of the display module 100, thereby allowing the vibration plate 200 to vibrate. The vibration module 400 according to an embodiment of the present disclosure may include a first vibration generating device 410 and a second vibration generating device 430, which may be attached to or disposed on the front surface of the vibration plate 200 through adhesive members 412 and 432. The first vibration generating device 410 and the second vibration generating device 430 may each include the above-mentioned piezoelectric material layer, and therefore, a detailed description thereof will not be repeated.

[0187] The surrounding member 500 may be disposed in each of the first rear region and the second rear region of the vibration plate 200 to respectively surround each of the first vibration generating device 410 and the second vibration generating device 430. For example, the surrounding member 500 may be located in a horizontal vibration region of the vibration plate 200 (the horizontal vibration region is adjusted in each of the first rear region and the second rear region of the vibration plate 200), and may prevent (or attenuate) horizontal vibration (or undesired vibration) of the vibration plate 200, thereby reducing the total harmonic distortion characteristics of the vibration plate 200, thereby improving the sound quality and sound pressure characteristics of the display device.

[0188] The surrounding piece 500 according to an embodiment of the present disclosure may include a first surrounding piece 510 and a second surrounding piece 530 .

[0189] The first surround 510 may be located between the rear surface of the display module 100 and the vibration plate 200, and may surround the first vibration generating device 410. The first surround 510 according to an embodiment of the present disclosure may surround the first vibration generating device 410 in the first rear region of the vibration plate 200, and thus, a second air gap AG2 surrounding the first vibration generating device 410 may be provided in the first air gap AG1. For example, the second air gap AG2 may be a sealed space or a vibration space for enabling the vibration plate 200 to vibrate based on the vibration of the first vibration generating device 410. The first surround 510 may prevent or attenuate each horizontal vibration or undesired vibration occurring in the first rear region of the vibration plate 200 and may prevent or reduce mutual interference between the vibration based on the first vibration generating device 410 and the vibration based on the second vibration generating device 430.

[0190] The second surround 530 may be located between the rear surface of the display module 100 and the vibration plate 200, and may surround the second vibration generating device 430. The second surround 530 according to an embodiment of the present disclosure may surround the second vibration generating device 430 in the second rear region of the vibration plate 200, and thus, a second air gap AG2 surrounding the second vibration generating device 430 may be provided in the first air gap AG1. For example, the second air gap AG2 may be a sealed space or a vibration space for enabling the vibration plate 200 to vibrate based on the vibration of the second vibration generating device 430. The second surround 530 may prevent or attenuate each horizontal vibration or undesired vibration occurring in the second rear region of the vibration plate 200 and may prevent or reduce mutual interference between the vibration based on the first vibration generating device 410 and the vibration based on the second vibration generating device 430.

[0191] The system back cover 600 may accommodate the display module 100 and the vibration plate 200 coupled or connected to the vibration module 400. The system back cover 600 according to an embodiment of the present disclosure may include a rear structure 610 and a side structure 630.

[0192] The rear structure 610, which may be the outermost structure on the rear surface of the display device, may support the support cover 150 of the display module 100, and may cover the rear surface of the vibration plate 200 with a third air gap AG3 therebetween. For example, the rear structure 610 may be spaced apart from the vibration plate 200 by a predetermined distance so as not to physically contact the vibration plate 200 when the vibration plate 200 vibrates.

[0193] The side structure 630 , which may be the outermost structure on the side surface of the display device, may be located on an edge or in the periphery of the rear structure 610 , and may cover the side surfaces of the display module 100 and the vibration plate 200 with a boundary gap BG therebetween.

[0194] The system back cover 600 according to an embodiment of the present disclosure may further include a rear sound member 650. The rear sound member 650 may protrude from a corner of each of the rear structure 610 and the side structure 630, or may be installed in a corner of each of the rear structure 610 and the side structure 630. For example, the rear sound member 650 may be referred to as a "sound guide member", "rear sound guide member", or "rear sound guide", but the term is not limited thereto.

[0195] The rear sound member 650 according to an embodiment of the present disclosure may include an inclined surface or a curved surface each facing the third air gap AG3 and the boundary gap BG. The rear sound member 650 may guide the travel path of the rear sound (traveling toward the boundary gap BG via the third air gap AG3) in a direction toward the boundary gap BG (e.g., in a direction toward the front surface of the display panel 110), thereby blocking, reducing or minimizing the rear sound that may be reflected again to the third air gap AG3 by the side structure 630. For example, the rear sound that may be generated in the third air gap AG3 based on the vibration of the vibration plate 200 may be output in a direction toward the front surface of the display panel 110 through the boundary gap BG, and therefore, may be used as an edge or peripheral sound ESW.

[0196] The system front cover 700 may cover the periphery and the boundary gap BG of the front surface of the display panel 110. The system front cover 700 may have a quadrangular (quadrangular) frame shape and may cover the periphery and the boundary gap BG of the front surface of the display panel 110. The system front cover 700 may be coupled or connected to the side structure 630 of the system rear cover 600 by a fastening member such as a hook. The system front cover 700 may cover the panel driving circuit unit 120 and the front surface of the display module 100, rather than the display area of ​​the display panel 110.

[0197] The system front cover 700 according to an embodiment of the present disclosure may include at least one sound emission portion 710 overlapping the boundary gap BG. The sound emission portion 710 may include a plurality of sound emission ports 710a and 710b, which may vertically pass through the system front cover 600 overlapping the boundary gap BG to communicate the boundary gap BG with the outside. For example, the sound emission portion 710 may be disposed in at least one of the first to fourth corner portions of the system front cover 700 and the middle portion between the first to fourth corner portions.

[0198] The computing device according to the embodiment of the present disclosure may include a display module 100, which may vibrate based on the vibration of the vibration plate 200, the vibration of the vibration plate 200 being performed based on the vibration of the vibration module 400, and therefore, the panel sound PSW generated based on the vibration of the display module 100 may be output toward the front area in front of the display panel 110, thereby outputting high-quality sound of a wide sound band, realizing a sound field that can completely fill the entire screen, and enhancing the immersive experience of the viewer due to the harmony (or matching) between the image and the sound. In addition, the computing device according to the embodiment of the present disclosure may include a surrounding member 500 located near the vibration module 400 to prevent (or weaken) the horizontal vibration of the vibration plate 200 that may vibrate based on the vibration of the vibration module 400. Therefore, the total harmonic distortion characteristics of the vibration plate 200 may be reduced, thereby improving the sound quality and sound pressure characteristics. In addition, in a computing device according to an embodiment of the present disclosure, the panel vibration sound generated based on the vibration of the display module 100 can be directly output as a panel sound PSW toward the front area in front of the display panel 110, and the rear sound (or plate vibration sound) generated based on the vibration of the vibration plate 200 can be output as an edge sound ESW toward the front area in the front of the display panel 110 via the third air gap AG3 and the boundary gap BG, rather than being output toward the rear area behind the display panel 110 and / or the lower area below, thereby accurately transmitting the sound and improving the sound quality to increase the viewer's immersive experience.

[0199] In addition, even without a speaker embedded in the system body 10, the computing device according to the embodiment of the present disclosure can output the panel sound PSW edge or peripheral sound ESW generated based on the vibration of the display panel 110, which is output toward the front area of ​​the front part of the display panel 110 through the boundary gap BG based on the vibration of the vibration plate 200. Therefore, the embedded speaker embedded in the system body 10 can be omitted. Therefore, the weight of the system body can be reduced. Moreover, the space obtained by removing the embedded speaker can be used as a space where a battery can be set, thereby increasing the size of the battery.

[0200] Figure 5According to another embodiment of the present disclosure, Figure 2 A cross-sectional view taken along line II' shown in FIG.

[0201] Figure 5 shows where the protection member is added to Figures 2 to 4 Therefore, in the following description, only the modified elements will be described in detail, and in the example Figures 2 to 4 In the description of other elements in the drawings, the same reference numerals denote the same elements, and repeated descriptions will be omitted or will be briefly given.

[0202] Reference Figure 5 , the display device according to the embodiment of the present disclosure may further include a protection member 800 .

[0203] The protective member 800 may be located on the rear surface of the display module 100 or facing the rear surface of the display module 100, and facing the vibration module 400. The protective member 800 according to the embodiment of the present disclosure may be located on the rear surface of the support cover 150 or facing the rear surface of the support cover 150 and facing the vibration module 400, and may have a size that may be larger than the size of each of the plurality of vibration generating devices 410 and 430 of the vibration module 400. The protective member 800 may prevent or reduce the vibration generating devices 410 and 430 of the vibration module 400 from being damaged by physical impact and / or electrical impact such as static electricity. For example, the vibration generating devices 410 and 430 may be damaged by static electricity that may occur in the display module 100 such as the panel driving circuit unit or may flow in from the outside, or may be damaged by physical contact with the display module 100 due to pressing the display module 100. Therefore, the protective member 800 may be located between the display module 100 and each of the vibration generating devices 410 and 430, and thus, static electricity transmitted to the vibration generating devices 410 and 430 through the display module 100 may be cut off, the vibration generating devices 410 and 430 may be protected from static electricity (damage), and the vibration generating devices 410 and 430 may be protected from physical impact applied to each of the vibration generating devices 410 and 430. The protective member 800 according to an embodiment of the present disclosure may include a single-sided insulating tape or an insulating single-sided foam tape each including an adhesive layer attached to the support cover 150. For example, the protective member 800 may be a polyethylene terephthalate (PET) insulating tape or a polyvinyl chloride (PVC) insulating tape.

[0204] As another example, the protective member 800 may alternatively or additionally be located on each of the vibration generating devices 410 and 430 of the vibration module 400, directly facing the rear surface of the display module 100. For example, the protective member 800 may increase the weight of each of the vibration generating devices 410 and 430 to reduce the resonance frequency of the vibration plate 200, thereby increasing the frequency characteristics of the low-pitched vocal range of the sound generated based on the vibration of the vibration plate 200.

[0205] Figure 6 According to another embodiment of the present disclosure, Figure 2 A cross-sectional view taken along line II' shown in FIG.

[0206] Figure 6 Shown by modifying Figure 3 and Figure 4 Therefore, in the following description, only the modified elements will be described in detail, and in the example Figures 2 to 5 In the description of other elements in the drawings, the same reference numerals denote the same elements, and repeated descriptions will be omitted or will be briefly given.

[0207] Reference Figure 6 , a support cover 150 according to another embodiment of the present disclosure may include a cover plate 151 , a side cover 153 , and an opening or hole 155 .

[0208] The cover plate 151 and the side cover 153 can be referred to above. Figure 3 and 4 Therefore, their repeated description is omitted.

[0209] An opening or hole 155 may be provided in the cover plate 151 to face the vibration module 400. The opening 155 according to an embodiment of the present disclosure may be provided to vertically penetrate the cover plate 151 and may have a size that may be larger than the size of each of the plurality of vibration generating devices 410 and 430 of the vibration module 400, for inserting or accommodating the vibration generating devices 410 and 430 therein. The opening 155 may protect the vibration generating devices 410 and 430 from a physical impact applied to each of the vibration generating devices 410 and 430 by the display module 100. For example, when the display module 100 is over-pressed, each of the vibration generating devices 410 and 430 may be inserted or accommodated in the opening 155 of the support cover 150 and may not be in physical contact with the cover plate 151 of the support cover 150, thereby preventing or reducing the vibration generating devices 410 and 430 from being damaged by the physical impact caused by the display module 100.

[0210] The support cover 150 according to another embodiment of the present disclosure may reduce the weight corresponding to the size of the opening 155. Therefore, the weight of the display module 100 may be reduced, and the weight of the computing device may also be reduced.

[0211] Figure 7 According to another embodiment of the present disclosure, Figure 2 A cross-sectional view taken along line II' shown in FIG.

[0212] Figure 7 Shown by modifying Figure 3 and Figure 4 Therefore, in the following description, only the modified elements will be described in detail, and in the example Figures 2 to 6 In the description of other elements in the drawings, the same reference numerals denote the same elements, and repeated descriptions will be omitted or will be briefly given.

[0213] Reference Figure 7 Combined with Figure 2 In a computing device according to an embodiment of the present disclosure, a display device 30 according to another embodiment of the present disclosure may include a display module 100, a vibration plate 200, a connecting member 300, a vibration module 400, a surrounding member 500, a system back cover 600 and a system front cover 700.

[0214] The display module 100 may be accommodated in the system back cover 600 and may display an image (eg, an electronic image). The display module 100 according to an embodiment of the present disclosure may include a display panel 110 that may display an image and a panel driving circuit unit that may drive the display panel 110.

[0215] The display panel 110 may be a light-emitting display panel. The display panel 110 according to an embodiment of the present disclosure may include: a pixel array substrate 116 including a pixel array 117 including a plurality of pixels; an encapsulation layer 118 which may encapsulate the pixel array 117; and a cover film 119 located on an upper surface of the encapsulation layer 118.

[0216] A plurality of pixels may be located in a plurality of pixel regions, respectively, and may be driven by a plurality of pixel drive lines, respectively. Moreover, each of the plurality of pixels may include: a pixel circuit including at least two thin film transistors (TFTs) and at least one capacitor; and a light emitting device that may emit light using a current provided from the pixel circuit. For example, the light emitting device may include an organic light emitting layer or a quantum dot light emitting layer. As another example, the light emitting device may include a micro light emitting diode (LED).

[0217] The encapsulation layer 118 may protect the TFT and the light emitting device from external impact, and may reduce or prevent water or moisture from penetrating into the light emitting device.

[0218] The covering film 119 may be attached to the upper surface of the encapsulation layer 118 by an adhesive member or disposed on the upper surface of the encapsulation layer 118. The adhesive member may be a transparent adhesive member, but is not limited thereto. The covering film 119 according to an embodiment of the present disclosure may be a polarizing film that circularly polarizes external light reflected by the pixel driving lines and / or TFTs disposed on the pixel array substrate 116, thereby improving visibility and contrast of the display panel 110. According to another embodiment of the present disclosure, the covering film 119 may be one or more of an anti-fingerprint film, a brightness enhancement film, and a blocking film, but is not limited thereto.

[0219] The display panel 110 according to an embodiment of the present disclosure may further include a barrier layer and a touch electrode layer between the encapsulation layer 118 and the cover film 119. Also, the display panel 110 may further include a color filter layer on an upper surface of the encapsulation layer 118.

[0220] In this embodiment, the encapsulation layer 118 may be replaced by an encapsulation substrate, and the encapsulation substrate may be attached to the pixel array substrate 116 via a filler surrounding the pixel array 117. If the filler is a transparent filler, the encapsulation substrate may be a transparent encapsulation substrate.

[0221] The panel driving circuit unit may be connected to the pad portion in the display panel 110, and may display an image corresponding to the video data provided from the system body 10 by driving each pixel separately. Figure 4 As shown, the panel driving circuit unit according to an embodiment of the present disclosure may include a plurality of data flexible circuit films 121, a plurality of data driving ICs 123, a PCB 125, and a timing control circuit 127. Therefore, a repeated description thereof will not be repeated.

[0222] The vibration plate 200 may be coupled or connected to the rear surface of the display module 100. The vibration plate 200 is as described above except that the vibration plate 200 is coupled or connected to the rear surface of the display panel 110 using the first air gap AG1 with the connection member 300 therebetween. Therefore, a repeated description thereof will not be repeated.

[0223] The vibration module 400 may be attached to or disposed on the front surface of the vibration plate 200 through an adhesive member 412. The vibration module 400 may include the first vibration generating device 410 and the second vibration generating device 430 described above, and may be as described above. Therefore, a detailed description thereof will not be repeated.

[0224] The surrounding member 500 may be located in each of the first and second rear regions of the vibration plate 200 and may surround the first and second vibration generating devices 410 and 430 and may be as described above. Therefore, a detailed description thereof may not be repeated.

[0225] The system back cover 600 may house the display module 100 and the vibration plate 200 coupled or connected to the display module 100. The system back cover 600 may include: a rear structure 610, which may cover the rear surface of the vibration plate 200 with a third air gap AG3 therebetween; a side structure 630, which may be disposed at an edge or periphery of the rear structure 610 and may cover the side surface of the display module 100 and the side surface of the vibration plate 200; and a rear sound member 650, which may be disposed in a corner portion of the rear structure 610 and the side structure 630. The system back cover 600 is as described above. Therefore, repeated description thereof is omitted.

[0226] The system front cover 700 may have a quadrilateral (quadrangular) frame shape and may cover the outside of the front surface of the display panel 110 and the boundary gap BG between the side structure 630 of the system rear cover 600 and the side surface of the display module 100. Moreover, the system front cover 700 may include at least one sound emission portion 710 including a plurality of sound emission ports 710a and 710b, which may overlap with the boundary gap BG and communicate the boundary gap BG with the outside. The system front cover 700 is as described above. A repeated description thereof is omitted.

[0227] The display device 30 according to another embodiment of the present disclosure may further include a protection member 900 between the display module 100 and the vibration module 400 .

[0228] The protective member 900 may be located on the vibration generating device 410 of the vibration module 400, directly facing the rear surface of the display module 100. For example, the size of the protective member 900 may be larger than the size of the vibration generating device 410 of the vibration module 400. As described above, the protective member 900 according to the embodiment of the present disclosure may prevent or reduce the vibration generating device 410 of the vibration module 400 from being damaged by physical impact and / or electrical impact such as static electricity. For example, the protective member 900 may be a polyethylene terephthalate (PET) film, but is not limited thereto.

[0229] As another example, the protective member 900 may be located on the rear surface of the display module 100 facing the vibration module 400. For example, the protective member 900 may be located on the rear surface of the display module 100 facing the vibration module 400, and may have a size that may be larger than the size of the vibration generating device 410 of the vibration module 400.

[0230] The computing device according to this embodiment may have Figures 2 to 6 Each of the examples illustrates the same effect on the computing device.

[0231] Reference Figures 8 to 13 The following embodiments described can be used with reference to Figures 1 to 7 Any combination of the embodiments described.

[0232] Figure 8 Shown according to Figure 3 The surrounding piece of the first embodiment of the present disclosure is shown.

[0233] Figure 8 The surrounding parts and the vibration module on the vibration plate are shown. Figure 8 , each of the first vibration generating device 410 and the second vibration generating device 430 according to an embodiment of the present disclosure may include a pair of first side portions S1a and S1b, the first side portions S1a and S1b may be parallel to the first direction X, and each of the first side portions S1a and S1b may have a first length L1. Each of the first vibration generating device 410 and the second vibration generating device 430 may also include a pair of second side portions S2a and S2b, the second side portions S2a and S2b may be parallel to a second direction Y intersecting the first direction X, and each of the second side portions S2a and S2b may have a second length L2. For example, each of the first vibration generating device 410 and the second vibration generating device 430 according to an embodiment of the present disclosure may have a rectangular shape, in which the first length L1 is shorter than the second length L2.

[0234] The vibration plate 200 according to an embodiment of the present disclosure may include a first rear region and a second rear region that may be parallel to each other. For example, the center of the first vibration generating device 410 may be located in the center region of the first rear region of the vibration plate 200, and the center of the second vibration generating device 430 may be located in the center region of the second rear region of the vibration plate 200. Therefore, the first vibration generating device 410 and the second vibration generating device 430 may be left-right symmetrical with respect to the center of the vibration plate 200. For example, the vibration plate 200 according to an embodiment of the present disclosure may include a first half (1 / 2) line HL1, a quarter (1 / 4) line OQL and a three-quarter (3 / 4) line TQL that may be parallel to the second direction Y, and a second half (1 / 2) line HL2 that is parallel to the first direction X. The first half line HL1 may be set at the center of the width direction of the vibration plate 200, and the second half line HL2 may be located at the center of the length direction of the vibration plate 200. For example, the center of the first vibration generating device 410 may be located at the intersection of the second half line HL2 and the 1 / 4 line OQL, and the center of the second vibration generating device 430 may be located at the intersection of the second half line HL2 and the 3 / 4 line TQL. Therefore, the first vibration generating device 410 and the second vibration generating device 430 may be symmetrical to each other with respect to the first half line HL1 of the vibration plate 200.

[0235] The surrounding piece 500 according to the first embodiment of the present disclosure may include a first surrounding piece 510 and a second surrounding piece 530 .

[0236] The first surrounding member 510 may be located between the rear surface of the display module 100 and the vibration plate 200, and may surround the first vibration generating device 410. The first surrounding member 510 according to an embodiment of the present disclosure may have a square shape relative to the center of the first vibration generating device 410 and may surround the first vibration generating device 410, thereby preventing or attenuating horizontal vibration or undesired vibration that may occur in the first rear region of the vibration plate 200, for example, due to a damping effect.

[0237] With respect to the first direction X, the first distance D1 between the first surround 510 and each of the second side portions S2a and S2b of the first vibration generating device 410 may be longer than each of the first length L1 and the second length L2 of the first vibration generating device 410. For example, the first distance D1 may be longer than the second length L2 and shorter than twice the first length L1. For example, when the first distance D1 between the first surround 510 and each of the second side portions S2a and S2b of the first vibration generating device 410 is shorter than each of the first length L1 and the second length L2 of the first vibration generating device 410, when an excessive damping effect is caused by the first surround 510 disposed relatively close to the first vibration generating device 410, the harmonic distortion occurring in the sound band of 1.5 kHz or less may not sufficiently reduce the total harmonic distortion characteristics of the vibration plate 200. Therefore, the sound pressure characteristics and the sound characteristics may be reduced in the sound frequency band of 1.5 kHz or less. Moreover, when the first distance D1 between the first surround 510 and each of the second side portions S2a and S2b of the first vibration generating device 410 is twice the first length L1 of the first vibration generating device 410, since the damping effect is reduced by the first surround 510 disposed relatively far from the first vibration generating device 410, the harmonic distortion occurring in the sound band of 2 kHz or less may not sufficiently reduce the total harmonic distortion characteristics of the vibration plate 200. Therefore, the sound pressure characteristics and the sound characteristics may be reduced in the sound frequency band of 2 kHz or less.

[0238] The second distance D2 between the first surround 510 and each of the first side portions S1a and S1b of the first vibration generating device 410 may be longer than the first length L1 of the first vibration generating device 410, and may be shorter than the second length L2 of the first vibration generating device 410 with respect to the second direction Y. For example, when the second distance D2 between the first surround 510 and each of the first side portions S1a and S1b of the first vibration generating device 410 is shorter than the first length L1 of the first vibration generating device 410, when the first surround 510 disposed relatively close to the first vibration generating device 410 causes an excessively large damping effect, harmonic distortion occurring in a sound band of 1.5 kHz or less may not sufficiently reduce the total harmonic distortion characteristics of the vibration plate 200. Therefore, the sound pressure characteristics and the sound characteristics may be reduced in the sound frequency band of 1.5 kHz or less. In addition, when the second distance D2 between the first surround 510 and each of the first side portions S1a and S1b of the first vibration generating device 410 is longer than the second length L2 of the first vibration generating device 410, when the damping effect is reduced by the first surround 510 disposed relatively far from the first vibration generating device 410, the harmonic distortion occurring in the sound band of 2 kHz or less may not sufficiently reduce the total harmonic distortion characteristics of the vibration plate 200. Therefore, the sound pressure characteristics and the sound characteristics may be reduced in the sound frequency band of 2 kHz or less.

[0239] The second surrounding member 530 may be located between the rear surface of the display module 100 and the vibration plate 200, and may surround the second vibration generating device 430. The second surrounding member 530 according to the embodiment may have a square shape with respect to the center of the second vibration generating device 430 and may surround the second vibration generating device 430, thereby preventing or attenuating horizontal vibration or undesired vibration that may occur in the second rear region of the vibration plate 200 due to a damping effect.

[0240] With respect to the first direction X, a first distance D1 between the second surround 530 and each of the second side portions S2a and S2b of the second vibration generating device 430 may be longer than each of the first length L1 and the second length L2 of the second vibration generating device 430. For example, the first distance D1 may be longer than the second length L2 and shorter than twice the first length L1. Here, when the first distance D1 between the second surround 530 and each of the second side portions S2a and S2b of the second vibration generating device 430 is shorter than each of the first length L1 and the second length L2 of the first vibration generating device 410, or is twice longer than the first length L1 of the first vibration generating device 410, as described above, the sound pressure characteristics and the sound quality characteristics may be reduced in a sound frequency band of 1.5 kHz or less or a sound frequency band of 2 kHz or less.

[0241] The second distance D2 between the second surround 530 and each of the first side portions S1a and S1b of the second vibration generating device 430 may be longer than the first length L1 of the second vibration generating device 430, and may be shorter than the second length L2 of the second vibration generating device 430, with respect to the second direction Y. For example, when the second distance D2 between the second surround 530 and each of the first side portions S1a and S1b of the second vibration generating device 430 is shorter than the first length L1 of the second vibration generating device 430 or longer than the second length L2 of the second vibration generating device 430, as described above, the sound pressure characteristics and the sound quality characteristics may be reduced in a sound frequency band of 1.5 kHz or less or in a sound frequency band of 2 kHz or less.

[0242] Each of the first surrounding piece 510 and the second surrounding piece 530 according to an embodiment of the present disclosure may include first to fourth surrounding members 501 to 504, each of which has a certain width and line shape. Each of the first to fourth surrounding members 501 to 504 may be a double-sided tape, a double-sided adhesive pad and / or a double-sided foam tape. For example, the width of each of the first to fourth surrounding members 501 to 504 may be about 3 mm, but is not limited thereto.

[0243] The first surrounding member 501 may be spaced apart from the vibration generating devices 410 and 430 by a second distance D2 and may be parallel to the first direction X. The first surrounding member 501 according to an embodiment of the present disclosure may have a third length L3 that may be longer than the first length L1 of each of the vibration generating devices 410 and 430 .

[0244] The second surrounding member 502 may be disposed in parallel with the first surrounding member 501 with the vibration generating devices 410 and 430 located therebetween. The width and length of the second surrounding member 502 according to an embodiment of the present disclosure may be the same as or different from those of the first surrounding member 501 .

[0245] The third surrounding member 503 may be disposed at a first distance D1 spaced apart from the vibration generating devices 410 and 430, and may be parallel to the second direction Y. The third surrounding member 503 according to an embodiment of the present disclosure may have a fourth length L4, which may be longer than the second length L2 of each of the vibration generating devices 410 and 430. For example, the fourth length L4 of the third surrounding member 503 may be the same as the distance between the outer surface of the second surrounding member 502 and the outer surface of the first surrounding member 501, which may not face the vibration generating devices 410 and 430. The inner surface of the two edges or peripheries of the third surrounding member 503 facing the vibration generating devices 410 and 430 may contact one side surface of the first surrounding member 501 and one side surface of the second surrounding member 502.

[0246] The fourth surrounding member 504 may be disposed in parallel with the third surrounding member 503, with the vibration generating devices 410 and 430 located therebetween. The width and length of the fourth surrounding member 504 according to an embodiment of the present disclosure may be the same as or different from the width and length of the third surrounding member 503. For example, the fourth length L4 of the fourth surrounding member 504 may be the same as the distance between the outer surface of the second surrounding member 502 and the outer surface of the first surrounding member 501, and the outer surface of the second surrounding member 502 and the outer surface of the first surrounding member 501 may not face the vibration generating devices 410 and 430. The inner surface of the two edges or peripheries of the fourth surrounding member 504 facing the vibration generating devices 410 and 430 may contact the other side surface of the first surrounding member 501 and the other side surface of the second surrounding member 502.

[0247] With respect to the first direction X, a third distance D3 between one end LE of the vibration plate 200 and the third surrounding member 503 of the first surrounding member 510, a fourth distance D4 between the first half line HL1 of the vibration plate 200 and the fourth surrounding member 504 of the first surrounding member 510, a fifth distance D5 between the first half line HL1 of the vibration plate 200 and the fourth surrounding member 504 of the second surrounding member 530, and a sixth distance D6 between the other end RE of the vibration plate 200 and the third surrounding member 503 of the second surrounding member 530 may be the same. With respect to the first direction X, the third distance D3 to the sixth distance D6 may be adjusted identically. Therefore, vibrations generated in the first rear region and the second rear region of the vibration plate 200 may be separated from each other, and a horizontal vibration region of the vibration plate 200 may be reduced, minimized, or removed.

[0248] The first surround 510 and the second surround 530 according to the first embodiment of the present disclosure can reduce the total harmonic distortion characteristics of the vibration plate 200 in the vocal cord of 1.5 kHz or less by 15% or less and can reduce the total harmonic distortion characteristics of the vibration plate 200 in the vocal cord of 1.5 kHz or more by less than 3%. Therefore, compared with the comparative example in which the surround 500 is not provided, the sound pressure characteristics and the sound characteristics of the complete vocal cord can be enhanced.

[0249] Fig. 9 Shown according to Figure 3 A surround according to a second embodiment of the present disclosure is shown.

[0250] Fig. 9 Shown by modifying Figure 8 Therefore, in the following, only the surrounding piece and the elements related thereto will be described.

[0251] Reference Fig. 9, each of the first surrounding member 510 and the second surrounding member 530 according to the second embodiment of the present disclosure may have a rectangular shape, and its size may be greater than Figure 8 For example, each of the third surrounding member 503 and the fourth surrounding member 504 of each of the first surrounding member 510 and the second surrounding member 530 may have a fifth length L5, which may be longer than the second length L2 of each of the plurality of vibration generating devices 410 and 430. The fifth length L5 of each of the third surrounding member 503 and the fourth surrounding member 504 may be longer than Figure 8 , and the fourth length L4 of each of the third surrounding member 503 and the fourth surrounding member 504 shown in . Each of the first surrounding member 510 and the second surrounding member 530 according to the second embodiment of the present disclosure can reduce the total harmonic distortion characteristics of the vibration plate 200 in the vocal cord of 1.5kHz or less by 5% or less, can reduce the total harmonic distortion characteristics of the vibration plate 200 in the vocal cord of about 1.5kHz to about 2kHz by 14% or less, and can reduce the total harmonic distortion characteristics of the vibration plate 200 in the vocal cord of 2kHz or more by less than 2%. Therefore, compared with the comparative example in which the surrounding member 500 is not provided, the sound pressure characteristics and the sound characteristics of the complete vocal cord can be enhanced.

[0252] With respect to the first direction X, a first distance D1 between each of the second surround 530 and the first surround 510 according to the second embodiment of the present disclosure and each of the first side portions S1a and S1b of each of the vibration generating devices 410 and 430 may be longer than each of the first length L1 and the second length L2 of each of the vibration generating devices 410 and 430, and may be shorter than twice the first length L1 of each of the vibration generating devices 410 and 430. When the first distance D1 is shorter than each of the first length L1 and the second length L2 of each of the vibration generating devices 410 and 430 and is twice the first length L1 of each of the vibration generating devices 410 and 430, as described above, the sound pressure characteristics and the sound quality characteristics may be reduced in a sound frequency band of 1.5 kHz or less or in a sound frequency band of 2 kHz or less.

[0253] With respect to the second direction Y, a second distance D2 between each of the second surround 530 and the first surround 510 according to the second embodiment of the present disclosure and each of the first side portions S1a and S1b of each of the vibration generating devices 410 and 430 may be 2.5 times the first length L1 of each of the vibration generating devices 410 and 430, or may be 1.5 times the second length L2 of each of the vibration generating devices 410 and 430. For example, when the second distance D2 is 2.5 times longer than the first length L1 of each of the vibration generating devices 410 and 430, as described above, the sound pressure characteristics and the sound quality characteristics may be reduced in a sound frequency band of 1.5 kHz or less or in a sound frequency band of 2 kHz or less.

[0254] Fig.10 Shown according to Figure 3 A surround according to a third embodiment of the present disclosure is shown.

[0255] Fig.10 Shown by modifying Figure 8 Therefore, in the following, only the surrounding piece and the elements related thereto will be described.

[0256] Reference Fig.10 , each of the first surrounding member 510 and the second surrounding member 530 according to the third embodiment of the present disclosure may have a square shape, and its size may be smaller than Figure 8 The dimensions of the surrounding pieces shown in .

[0257] With respect to the first direction X, a first distance D1 between each of the second surrounding member 530 and the first surrounding member 510 according to the third embodiment of the present disclosure and each of the vibration generating devices 410 and 430 may be longer than the first length L1 of each of the vibration generating devices 410 and 430, and may be shorter than the second length L2 of each of the vibration generating devices 410 and 430. With respect to the second direction Y, a second distance D2 between each of the second surrounding member 530 and the first surrounding member 510 according to the third embodiment of the present disclosure and each of the vibration generating devices 410 and 430 may be shorter than the first length L1 of each of the vibration generating devices 410 and 430, or may be half of the second length L2 of each of the vibration generating devices 410 and 430.

[0258] Each of the first surround 510 and the second surround 530 according to the third embodiment of the present disclosure can reduce the total harmonic distortion characteristics of the vibration plate 200 occurring in the vocal cord of 1.5 kHz or less by 32% or less and can reduce the total harmonic distortion characteristics of the vibration plate 200 occurring in the vocal cord of 1.5 kHz or more by less than 2%. Therefore, compared with the comparative example in which the surround 500 is not provided, the sound pressure characteristics and the sound characteristics of the complete vocal cord can be enhanced.

[0259] Fig.11 Shown according to Figure 3 A surrounding piece of a fourth embodiment of the present disclosure is shown.

[0260] Fig.11 Shown by zooming in Figure 8 Therefore, hereinafter, the surrounding piece and the elements related thereto will be described.

[0261] Reference Fig.11 , each of the first surrounding member 510 and the second surrounding member 530 according to the fourth embodiment of the present disclosure may have a square shape, and its size may be greater than Figure 8 The dimensions of the surrounding pieces shown in .

[0262] With respect to the first direction X, a first distance D1 between each of the second surrounding member 530 and the first surrounding member 510 according to the fourth embodiment of the present disclosure and each of the vibration generating devices 410 and 430 may be longer than the second length L2 of each of the vibration generating devices 410 and 430, and may be 2.5 times shorter than the first length L1 of each of the vibration generating devices 410 and 430. With respect to the second direction Y, a second distance D2 between each of the second surrounding member 530 and the first surrounding member 510 according to the fourth embodiment of the present disclosure and each of the vibration generating devices 410 and 430 may be longer than the second length L2 of each of the vibration generating devices 410 and 430, or may be shorter than twice the first length L1 of each of the vibration generating devices 410 and 430.

[0263] Each of the first surround 510 and the second surround 530 according to the fourth embodiment of the present disclosure can reduce the total harmonic distortion characteristics of the vibration plate 200 occurring in the vocal cord of 1.5 kHz or less by 63% or less, and can reduce the total harmonic distortion characteristics of the vibration plate 200 occurring in the vocal cord of 1.5 kHz or more by less than 5%. Therefore, compared with the comparative example in which the surround 500 is not provided, the sound pressure characteristics and the sound characteristics of the complete vocal cord can be enhanced.

[0264] Fig.12 Shown according to Figure 3A surround of a fifth embodiment of the present disclosure is shown.

[0265] Fig.12 Shown by zooming in Figure 8 Therefore, in the following, only the surrounding piece and the elements related thereto will be described.

[0266] Reference Fig.12 , each of the first surrounding member 510 and the second surrounding member 530 according to the fifth embodiment of the present disclosure may have a square shape, and its size may be greater than Fig.11 The dimensions of the surrounding pieces shown in .

[0267] With respect to the first direction X, a first distance D1 between each of the second surround 530 and the first surround 510 according to the fifth embodiment of the present disclosure and each of the vibration generating devices 410 and 430 may be 1.5 times the second length L2 of each of the vibration generating devices 410 and 430, and may be shorter than three times the first length L1 of each of the vibration generating devices 410 and 430. With respect to the second direction Y, a second distance D2 between each of the second surround 530 and the first surround 510 according to the fifth embodiment of the present disclosure and each of the vibration generating devices 410 and 430 may be 2.5 times the first length L1 of each of the vibration generating devices 410 and 430.

[0268] Each of the first surround 510 and the second surround 530 according to the fifth embodiment of the present disclosure can reduce the total harmonic distortion characteristics of the vibration plate 200 occurring in the vocal cord of 1.5kHz or less by 31% or less, can reduce the total harmonic distortion characteristics of the vibration plate 200 occurring in the vocal cord of about 1.5kHz to about 2kHz by less than 9%, and can reduce the total harmonic distortion characteristics of the vibration plate 200 occurring in the vocal cord of 2kHz or more by less than 2%. Therefore, compared with the comparative example in which the surround 500 is not provided, the sound pressure characteristics and the sound characteristics of the complete vocal cord can be enhanced.

[0269] Fig.13 Shown according to Figure 3 A surround of a sixth embodiment of the present disclosure is shown.

[0270] Fig.13 An embodiment is shown, wherein Fig. 9 The surrounding piece shown in is arranged as a double-layer structure. Therefore, hereinafter, the surrounding piece and the elements related thereto will be described.

[0271] Reference Fig.13Each of the first surrounding member 510 and the second surrounding member 530 according to the sixth embodiment of the present disclosure may include an outer surrounding member having Fig. 9 , and an inner surrounding member disposed between the vibration module and the surrounding member. Here, each of the outer surrounding member and the inner surrounding member may have a rectangular shape. The center of the inner surrounding member and the center of the outer surrounding member may be the same as and / or correspond to the center of the first and second vibration generating devices, respectively.

[0272] Each of the first surround 510 and the second surround 530 according to the sixth embodiment of the present disclosure can reduce the total harmonic distortion characteristics of the vibration plate 200 occurring in the vocal cord of 1.5kHz or less by 18% or less, can reduce the total harmonic distortion characteristics of the vibration plate 200 occurring in the vocal cord of about 1.5kHz to about 2kHz by less than 6%, and can reduce the total harmonic distortion characteristics of the vibration plate 200 occurring in the vocal cord of 2kHz or more by less than 1%. Therefore, compared with the comparative example in which the surround 500 is not provided, the sound pressure characteristics and the sound characteristics of the complete vocal cord can be enhanced.

[0273] Fig.14 A computing device according to another embodiment of the present disclosure is shown.

[0274] Reference Fig.14 According to another embodiment of the present disclosure, a computing device may include Figures 1 to 13 The computing device of the embodiment of the present disclosure shown in any one of the examples may include an embedded speaker provided in the system body 10. Figure 3 and Figures 5 to 7 Each example shows the Fig.14 A cross-sectional view taken along the line II' shown in FIG. Figure 4 The example shows the Fig.14 A cross-sectional view taken along line II-II' shown in FIG.

[0275] Therefore, a computing device according to another embodiment of the present disclosure may use a speaker sound SSW, which may be output to an area next to one side of the system body through an embedded speaker provided in the system body 10; a panel sound PSW, which may be directly output to a front area in front of the display panel 110 based on the vibration of the display panel 110, and the vibration of the display panel 110 may be performed based on the vibration of each of the vibration module and the vibration plate; and an edge or peripheral sound ESW, which may be output toward a front area in front of the display panel 110 through a boundary gap based on the vibration of the vibration plate to achieve stereo sound.

[0276] Fig.15 A display device according to an embodiment of the present disclosure is shown.

[0277] In accordance with Figures 1 to 14 In any of the computing devices of the embodiments of the present disclosure shown in the examples of FIG. 1 , the display device 30 may be used as Fig.15 The display device of the television (TV) and the monitor shown can also be used as a display device such as a navigation device, an electronic tablet or a tablet computer. Figure 3 and Figures 5 to 7 Each of the examples is shown along Fig.15 The cross-sectional surface is taken along the line II' shown in FIG. Figure 4 The example shows the Fig.15 The cross-sectional surface is taken along the line II-II' shown in FIG. Fig.15 The display device of the embodiment of the present disclosure shown can achieve stereo sound by using a panel sound PSW and an edge or peripheral sound ESW, wherein the panel sound PSW can be directly output toward a front area in front of the display panel 110 based on the vibration of the display panel 110, and the vibration of the display panel 110 can be performed based on the vibration of each of the vibration module and the vibration plate, and the edge or peripheral sound ESW can be output toward the front area in the front of the display panel 110 through a boundary gap based on the vibration of the vibration plate.

[0278] Fig.16 : is a graph showing the experimental results of the total harmonic distortion characteristics of the display device of the comparative example. Fig.17 : is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to the first embodiment of the present disclosure. Fig.18 : is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to a second embodiment of the present disclosure. Fig.19 : is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to a third embodiment of the present disclosure. Fig. 20 : is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to a fourth embodiment of the present disclosure. Fig.21 is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to a fifth embodiment of the present disclosure. Fig. 22 is a graph showing experimental results of total harmonic distortion characteristics of a display device including a surround according to a sixth embodiment of the present disclosure.

[0279] The display device according to the comparative example has a structure in which no surrounding member is provided near the vibration module. Figures 16 to 23, the abscissa axis (eg, x-axis) represents frequency (Hz), and the ordinate axis (eg, y-axis) represents total harmonic distortion (THD) ratio (%).

[0280] Reference Fig.16 In the display device according to the comparative example, it can be seen that a THD characteristic of 70.39% is shown in a sound band (or sound frequency) of about 1.03kHz, a THD characteristic of 7.02% is shown in a sound band of about 2.42kHz, and a THD characteristic of 5% is intermittently shown in a sound band of about 1.15kHz to about 2kHz. Therefore, due to the THD characteristics of each of the sound bands of 1.5kHz or less and the sound bands of 2kHz to 2.5kHz, the sound pressure characteristics and the sound quality of the display device according to the comparative example are reduced.

[0281] Reference Fig.17 In a display device including a surround according to the first embodiment of the present disclosure (hereinafter referred to as the first embodiment of the present disclosure), it can be seen that a primary THD characteristic of 13.52% is shown in a sound band of about 1.04kHz, a secondary THD characteristic of 10.60% is shown in a sound band of 1.16kHz, a tertiary THD characteristic of 4.2% is shown in a sound band of 1.4kHz, and a THD characteristic of 3% or 2% is intermittently shown in a sound band of 1.5kHz or higher. Therefore, compared with the comparative example, it can be seen that in the first embodiment of the present disclosure, the THD characteristic is reduced in the full sound band. Therefore, the sound pressure characteristic and the sound quality are enhanced.

[0282] Reference Fig.18 In a display device including a surround according to the second embodiment of the present disclosure (hereinafter referred to as the second embodiment of the present disclosure), it can be seen that a primary THD characteristic of 13.42% is shown in a sound band of 1.58kHz, a secondary THD characteristic of 12.04% is shown in a sound band of 1.63kHz, a THD characteristic of 4% is shown in a sound band of 1.5kHz or less, and a THD characteristic of 2% or less is shown in a sound band of 1.8kHz or more. Therefore, compared with the comparative example, it can be seen that in the second embodiment of the present disclosure, the THD characteristic is reduced in the full sound band. Therefore, the sound pressure characteristic and the sound quality are enhanced. In addition, compared with the first embodiment of the present disclosure, it can be seen that the second embodiment of the present disclosure has a relatively high THD characteristic in the sound frequency band of 1.5kHz to 1.8kHz, and has a relatively low THD characteristic in the sound frequency band other than the sound frequency band of 1.5kHz to 1.8kHz. Therefore, the second embodiment of the present disclosure can be applied.

[0283] Reference Fig.19In a display device including a surround according to the third embodiment of the present disclosure (hereinafter referred to as the third embodiment of the present disclosure), it can be seen that a main THD characteristic of 37.79% is shown in a sound band of 1.06kHz, a secondary THD characteristic of 13.37% is shown in a sound band of 1.22kHz, a tertiary THD characteristic of 11.5% is shown in a sound band of 1.43kHz, and a THD characteristic of 2% or less is intermittently shown in a sound band of 1.5kHz or higher. Therefore, compared with the comparative example, it can be seen that in the third embodiment of the present disclosure, the THD characteristic is reduced in the full sound band. Therefore, the sound pressure characteristic and the sound quality are enhanced. Moreover, compared with the first embodiment of the present disclosure, it can be seen that the third embodiment of the present disclosure has a relatively high THD characteristic in a sound band of 1.5kHz or less, and has a relatively low THD characteristic in a sound band of 1.5kHz or higher. Therefore, the third embodiment of the present disclosure can be applied.

[0284] Reference Fig. 20 , in a display device including a surround according to the fourth embodiment of the present disclosure (hereinafter referred to as the fourth embodiment of the present disclosure), it can be seen that a primary THD characteristic of 62.17% is shown in a sound band of 1.18kHz, a secondary THD characteristic of 4.39% is shown in a sound band of 1.4kHz, and a THD characteristic of 2.5% or less is intermittently shown in a sound band of 1.5kHz or higher. Therefore, compared with the comparative example, it can be seen that in the fourth embodiment of the present disclosure, the THD characteristic is reduced in the full sound band. Therefore, the sound pressure characteristic and the sound quality are enhanced. Moreover, compared with the first embodiment of the present disclosure, it can be seen that the fourth embodiment of the present disclosure has a relatively high THD characteristic in a sound band of 1.5kHz or less, a similar THD characteristic in a sound band of 1.5kHz to 3.5kHz, and a relatively low THD characteristic in a sound band of 3.5kHz or higher. Therefore, the fourth embodiment of the present disclosure can be applied.

[0285] Reference Fig.21, in a display device including a surround according to the fifth embodiment of the present disclosure (hereinafter referred to as the fifth embodiment of the present disclosure), it can be seen that a primary THD characteristic of 30.70% is displayed in a sound band of 1.38kHz, a secondary THD characteristic of 8.81% is displayed in a sound band of 1.69kHz, a third THD characteristic of 6.8% is shown in a sound band of 1.17kHz, and a THD characteristic of 2% or less is intermittently shown in a sound band of 2kHz or more. Therefore, compared with the comparative example, it can be shown that in the fifth embodiment of the present disclosure, the THD characteristic is reduced in the full sound band. Therefore, the sound pressure characteristic and the sound quality are enhanced. Moreover, compared with the first embodiment of the present disclosure, it can be seen that the fifth embodiment of the present disclosure has a relatively high THD characteristic in the sound band of 1.38kHz and the sound band of 1.69kHz. And it has a similar THD characteristic and a relatively low THD characteristic in the sound bands other than the sound band of 1.38kHz and the sound band of 1.69kHz. Therefore, the fifth embodiment of the present disclosure can be applied.

[0286] Reference Fig. 22 In a display device including a surround according to the sixth embodiment of the present disclosure (hereinafter referred to as the sixth embodiment of the present disclosure), it can be seen that a main THD characteristic of 17.73% is shown in the sound band of 1.20kHz, a secondary THD characteristic of 5.39% is shown in the sound band of 1.81kHz, and a THD characteristic of 1% or less is intermittently shown in the sound band of 2kHz or higher. Therefore, compared with the comparative example, it can be seen that in the sixth embodiment of the present disclosure, the THD characteristic is reduced in the full sound band. Therefore, the sound pressure characteristic and the sound quality are enhanced. Moreover, compared with the first embodiment of the present disclosure, it can be seen that the sixth embodiment of the present disclosure has a relatively high THD characteristic in the sound band of 2kHz or less, and has a relatively low THD characteristic in the sound band of 2kHz or higher. Therefore, the sixth embodiment of the present disclosure can be applied.

[0287] Fig.23 is a graph showing experimental results of total harmonic distortion characteristics of a computing device according to a comparative example and total harmonic distortion characteristics of a computing device according to an embodiment of the present disclosure.

[0288] exist Fig.23 , the abscissa axis (e.g., x-axis) represents frequency, and the ordinate axis (e.g., y-axis) represents THD characteristics. The computing device according to the comparative example includes a display device in which no surrounding piece is provided near the vibration module. The computing device according to an embodiment of the present disclosure includes a display device including the surrounding piece according to the first embodiment of the present disclosure.

[0289] like Fig.23As shown in the dotted line graph, it can be seen that in the computing device according to the comparative example, a THD characteristic of 18% is shown in the sound band of 1 kHz to 2 kHz, and a THD characteristic of 5% to 10% is intermittently shown in the sound band of 2 kHz or more.

[0290] like Fig.23 As shown in the solid line graph shown, it can be seen that in the computing device according to the embodiment of the present disclosure, a THD characteristic of 7% is shown in the sound band above 2kHz, and a THD characteristic of 5% or less is shown in the sound band above 2kHz. Moreover, compared with the comparative example, it can be seen that in the computing device according to the embodiment of the present disclosure, a relatively low THD characteristic is shown in the sound band of 1kHz or less.

[0291] Therefore, the computing device according to the embodiment of the present disclosure may include a surrounding member near the vibration module. Therefore, the THD characteristics of the computing device according to the embodiment of the present disclosure may be reduced in the complete sound band compared to the comparative example.

[0292] Fig.24 : is a graph showing experimental results of the sound pressure characteristics of the computing device according to the comparative example and the sound pressure characteristics of the computing device according to the embodiment of the present disclosure.

[0293] exist Fig.24 In , the horizontal axis (e.g., x-axis) represents frequency (Hz), and the vertical axis (e.g., y-axis) represents sound pressure level (dB). Fig.24 , the dotted line graph represents the sound pressure characteristics of the computing device according to the comparative example, and the thick solid line graph represents the sound pressure characteristics of the computing device according to the embodiment of the present disclosure.

[0294] like Fig.24 As shown, compared with the computing device according to the comparative example, it can be seen that in the computing device according to the embodiment of the present disclosure, Fig.23 The THD characteristics shown are improved in the full vocal band. Therefore, the sound pressure characteristics are enhanced. For example, compared with the computing device according to the comparative example, it can be seen that in the computing device according to the embodiment of the present disclosure, the sound pressure characteristics in the vocal band of 1 kHz are increased by 8dB to 9dB.

[0295] Therefore, the computing device according to the embodiment of the present disclosure may include a surrounding member disposed near the vibration module. Therefore, compared with the comparative example, the THD characteristics of the computing device according to the embodiment of the present disclosure can be reduced in the complete vocal cord, and the sound pressure characteristics and sound quality of the computing device according to the embodiment of the present disclosure can be enhanced.

[0296] The display device according to an embodiment of the present disclosure and a computing device including the display device can be applied to desktop personal computers (PCs), laptop PCs, netbook computers, workstations, navigation devices, car navigation devices, car display devices, televisions, wallpaper display devices, signage devices, game consoles, laptops, monitors, cameras, camcorders, home appliances, etc.

[0297] The display device according to the embodiment of the present disclosure and the computing device including the display device can vibrate the display module to output sound toward the front area in front of the display panel. Therefore, the display device and the computing device including the display device can output high-quality sound with a wide sound band, can realize a sound field that can completely fill the entire screen, and enhance the viewer's immersive experience due to the harmony (or matching) between the image and the sound. Therefore, the display device according to the present disclosure and the computing device including the display device can improve the sound characteristics of the low-pitched sound band and / or the high-pitched sound band.

[0298] In addition, when the display device according to the present disclosure and the computing device including the display device both include a surrounding member for preventing (or attenuating) horizontal vibration of the vibration plate, the total harmonic distortion of the vibration plate can be reduced. Therefore, the sound quality and sound pressure characteristics can be enhanced.

[0299] A display device and a computing device including the display device according to the present disclosure will be described below.

[0300] According to an embodiment of the present disclosure, a display device may include: a display module, which includes a display panel configured to display an image; a vibration plate, which is located on a rear surface of the display module; a connecting member, which is located between the rear surface of the display module and the vibration plate; at least one vibration module, which is located on the vibration plate; and a surrounding member, which is located between the rear surface of the display module and the vibration plate, the surrounding member is spaced apart from the vibration module, and the surrounding member surrounds the vibration module.

[0301] For example, in the display device according to the embodiment of the present disclosure, the connection member may surround the surrounding piece.

[0302] For example, in the display device according to the embodiment of the present disclosure, the first air gap is located between the display module and the vibration plate, and the first air gap includes at least one second air gap surrounding at least one vibration module.

[0303] For example, in the display device according to the embodiment of the present disclosure, the surrounding member may include one or more of a double-sided tape, a double-sided adhesive pad, or a double-sided foam pad.

[0304] For example, in a display device according to an embodiment of the present disclosure, the vibration module may include a vibration generating device attached to a vibration plate by an adhesive member or set on a vibration plate, the vibration generating device may include a pair of first side portions and a pair of second side portions, the first side portions are parallel to a first direction, and each first side portion has a first length, the second side portions are parallel to a second direction intersecting the first direction, and each second side portion has a second length, and a first distance between the surrounding member and each of the pair of second side portions of the vibration generating device may be 1 to 3 times the first length relative to the first direction.

[0305] For example, in the display apparatus according to the embodiment of the present disclosure, the second distance between the surrounding member and each of the pair of first side portions of the vibration generating device may be 0.5 times to 1.5 times the second length with respect to the second direction.

[0306] For example, in the display apparatus according to the embodiment of the present disclosure, in the vibration generating device, the first length may be shorter than the second length.

[0307] For example, in a display device according to an embodiment of the present disclosure, the surrounding piece may include: a first surrounding member, which is separated from the vibration generating device and parallel to the first direction; a second surrounding member, which is parallel to the first surrounding member, and the vibration generating device is located between the second surrounding member and the first surrounding member; a third surrounding member, which is separated from the vibration generating device and parallel to the second direction; and a fourth surrounding member, which is parallel to the third surrounding member, and the vibration generating device is located between the fourth surrounding member and the third surrounding member.

[0308] For example, in the display apparatus according to the embodiment of the present disclosure, the vibration generating device may include a piezoelectric material layer.

[0309] For example, in the display apparatus according to the embodiment of the present disclosure, the display apparatus may further include a protection member facing the vibration module on the rear surface of the display module.

[0310] For example, in the display apparatus according to an embodiment of the present disclosure, the display apparatus may further include a protection member on a surface of the vibration module facing the rear surface of the display module.

[0311] For example, in a display device according to an embodiment of the present disclosure, the display module may include: a panel guide configured to support the periphery of the rear surface of the display panel; a backlight unit located on the rear surface of the display panel; and a support cover for supporting the panel guide and accommodating the backlight unit, a vibration plate may be located on the rear surface of the support cover, and each of the connecting member and the surrounding member may be located between the rear surface of the support cover and the vibration plate.

[0312] For example, in the display apparatus according to the embodiment of the present disclosure, the display apparatus may further include a protection member facing the vibration module on the rear surface of the support cover.

[0313] For example, in the display apparatus according to an embodiment of the present disclosure, the support cover may include an opening facing the vibration module, and a size of the opening may be wider than a size of the vibration module.

[0314] For example, in a display device according to an embodiment of the present disclosure, the display panel may include a plurality of pixels, each pixel including a light-emitting device, a vibration plate may be located on the rear surface of the display panel, and each of the connecting member and the surrounding member may be located between the rear surface of the support cover and the vibration plate.

[0315] For example, in a display device according to an embodiment of the present disclosure, the display device may also include a system back cover with a third air gap located on the rear surface of the vibration plate, the system back cover including a rear structure covering the rear surface of the vibration plate and a side structure surrounding the side surface of the display module, and a third air gap is provided between the system back cover and the rear surface of the vibration plate.

[0316] For example, in the display device according to the embodiment of the present disclosure, the display device may further include a system front cover covering the periphery of the front surface of the display module and the boundary gap, the system front cover including at least one sound emission portion overlapping the boundary gap.

[0317] For example, in the display device according to the embodiment of the present disclosure, the vibration plate may include one or more of magnesium Mg, aluminum Al, an Al alloy material, a Mg alloy material, and a magnesium-lithium (Mg—Li) alloy material.

[0318] According to an embodiment of the present disclosure, a computing device may include: a system body, a display device, and a hinge portion between the system body and the display device, and is configured to rotatably support the display device, wherein the display device includes: a display module, the display module including a display panel configured to display an image; a vibration plate, the vibration plate is located on the rear surface of the display module; a connecting member, the connecting member is located between the rear surface of the display module and the vibration plate; a vibration module, the vibration module is located on the vibration plate; and a surrounding member, the surrounding member is located between the rear surface of the display module and the vibration plate, the surrounding member is spaced apart from the vibration module and can surround the vibration module, and the hinge portion, the hinge portion is located between the system body and the display device, and the hinge portion is configured to rotatably support the display device.

[0319] For example, a computing device according to an embodiment of the present disclosure may also include an embedded speaker in the system body.

[0320] It is obvious to those skilled in the art that various modifications and changes can be made in the present disclosure without departing from the technical concept or scope of the present disclosure. Therefore, the embodiments of the present disclosure are intended to cover modifications and changes to the present disclosure that fall within the scope of the attached claims and their equivalents.

[0321] CROSS-REFERENCE TO RELATED APPLICATIONS

[0322] This application claims the benefit of and priority to Korean Patent Application No. 10-2018-0113072, filed on September 20, 2018, which is hereby incorporated by reference in its entirety.

Claims

1. A display device, comprising: A display module, the display module comprising a display panel configured to display an image; a vibration plate, the vibration plate being located on the rear surface of the display module; a connecting member, the connecting member being located between the rear surface of the display module and the vibration plate; at least one vibration module, the at least one vibration module being located on a surface of the vibration plate facing a rear surface of the display module, the at least one vibration module comprising at least one vibration generating device; as well as at least one surrounding member, the at least one surrounding member being located between the display module and the vibration plate, the at least one surrounding member being spaced apart from the at least one vibration module and surrounding the at least one vibration module, Wherein, the at least one surrounding member comprises: a first surrounding member spaced apart from the at least one vibration generating device and parallel to the first direction; a second surrounding member, the second surrounding member being parallel to the first surrounding member, the at least one vibration generating device being located between the second surrounding member and the first surrounding member; a third surrounding member spaced apart from the at least one vibration generating device and parallel to the second direction; and a fourth surrounding member, the fourth surrounding member being parallel to the third surrounding member, the at least one vibration generating device being located between the fourth surrounding member and the third surrounding member, Wherein, the at least one vibration generating device comprises: a pair of first side portions parallel to the first direction, each of the pair of first side portions having a first length; and a pair of second side portions parallel to a second direction intersecting the first direction, each of the pair of second side portions having a second length, and Wherein, a second distance between each of the pair of first side portions of the at least one vibration generating device and the at least one surrounding member is 0.5 times to 1.5 times the second length relative to the second direction.

2. The display device according to claim 1, wherein: The connecting member surrounds the at least one surrounding piece.

3. The display device according to claim 1, wherein: A first air gap is provided between the display module and the vibration plate, and The first air gap includes at least one second air gap surrounding the at least one vibration module.

4. The display device according to claim 1, wherein: The at least one surrounding piece includes at least one of a double-sided adhesive tape, a double-sided adhesive pad, and a double-sided foam pad.

5. The display device according to claim 1, wherein: The at least one vibration generating device is disposed on a surface of the vibration plate facing a rear surface of the display module.

6. The display device according to claim 5, wherein: A first distance between each of the pair of second side portions of the at least one vibration generating device and the at least one surrounding member is 1 to 3 times the first length relative to the first direction.

7. The display device according to claim 5, wherein: In the at least one vibration generating device, the first length is shorter than the second length.

8. The display device according to claim 1, wherein: A third length of each of the first surrounding member and the second surrounding member is equal to a fourth length of each of the third surrounding member and the fourth surrounding member.

9. The display device according to claim 1, wherein: A third length of each of the first surrounding member and the second surrounding member is shorter than a fourth length of each of the third surrounding member and the fourth surrounding member.

10. The display device according to claim 1, wherein: The at least one vibration generating device comprises a layer of piezoelectric material. 11 . The display apparatus according to claim 1 , further comprising a protection member facing the vibration module on a rear surface of the display module. 12 . The display apparatus according to claim 1 , further comprising a protection member on a surface of the vibration module facing a rear surface of the display module.

13. The display device according to claim 1, wherein: The display module comprises: a panel guide configured to support an outer periphery of a rear surface of the display panel; a backlight unit, the backlight unit being located on a rear surface of the display panel; and A support cover, the support cover being configured as: supporting the panel guide; and The backlight unit is accommodated.

14. The display device according to claim 13, wherein: The vibration plate is located on the rear surface of the support cover.

15. The display device according to claim 13, wherein: Each of the connection member and the surrounding piece is located between a rear surface of the support cover and the vibration plate. 16 . The display apparatus according to claim 13 , further comprising a protection member on a rear surface of the support cover facing the vibration module.

17. The display device according to claim 13, wherein: The support cover includes an opening facing the vibration module, and The size of the opening is wider than that of the vibration module.

18. The display device according to claim 1, wherein: The display panel includes a plurality of pixels, each of the plurality of pixels includes a light emitting device; The vibration plate is located on the rear surface of the display panel; and Each of the connection member and the surrounding piece is located between a rear surface of the display panel and the vibration plate. 19 . The display device according to claim 1 , further comprising a system back cover located on a rear surface of the vibration plate, with a third air gap between the system back cover and the rear surface of the vibration plate.

20. The display device according to claim 19, wherein The system back cover comprises: a rear structure covering a rear surface of the vibration plate; and A side structure surrounds a side surface of the display module, and a boundary gap is formed between the side surface of the display module and the side structure. 21 . The display device of claim 20 , further comprising a system front cover covering an outer circumference of a front surface of the display module and the boundary gap, the system front cover comprising at least one sound emission portion overlapping the boundary gap.

22. The display device according to claim 1, wherein: The vibration plate includes one or more of the following: magnesium Mg, aluminum Al, an Al alloy material, a Mg alloy material, and a magnesium-lithium Mg—Li alloy material.

23. A computing device, the computing device comprising: System subject; The display device according to any one of claims 1 to 22; as well as A hinge portion is located between the system body and the display device, and is configured to rotatably support the display device.

24. The computing device of claim 23, further comprising an embedded speaker in the system body.

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