Display device

Abstract

A display device is provided, comprising: a display panel including a pixel array layer; a panel lower member disposed below the display panel; a first magnet disposed below the panel lower member and having a first area; a vibration generator coupled to one surface of the first magnet and having a second area larger than the first area; and a second magnet overlapping the first magnet in a thickness direction and spaced apart from the first magnet in the thickness direction.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2019-0067444, filed on Jun. 7, 2019, which is hereby incorporated by reference for all purposes as if fully set forth herein. Technical Field

[0002] Exemplary embodiments of the invention generally relate to a display device for outputting sound. Background Art

[0003] For some information devices, the demand for display devices that display images in various forms has increased. For example, the display device can be applied to various electronic devices such as smart phones, digital cameras, notebook computers, navigators, and smart TVs. The display device may include a display panel for displaying an image and a sound generator for providing sound.

[0004] Display devices require different designs due to being applied to various electronic devices. For example, a display device of a smart phone may require the ability to increase a display area by omitting a sound generator for outputting a counterpart's voice located at the front surface of the display device.

[0005] The above information disclosed in this section is only for understanding the background of the inventive concept and therefore may contain information that does not constitute the prior art. Summary of the invention

[0006] Some aspects of the exemplary embodiments provide a display device capable of outputting sound using a magnet and a vibration generator which may not be exposed to the outside, and various arrangements are disclosed herein.

[0007] Additional aspects will be set forth in the detailed description which follows, and in part will be obvious from the disclosure, or may be learned by practice of the inventive concepts.

[0008] According to some exemplary embodiments, a display device includes: a display panel including a pixel array layer; a panel lower member disposed under the display panel; a first magnet disposed under the panel lower member and having a first area; a vibration generator coupled to a surface of the first magnet and having a second area larger than the first area; and a second magnet overlapping the first magnet in a thickness direction and spaced apart from the first magnet in the thickness direction.

[0009] According to some exemplary embodiments, a display device includes: a display panel including a pixel array layer; a panel lower member disposed under the display panel; a magnet disposed under the panel lower member and having a first area; and a vibration generator coupled to a surface of the magnet and having a second area larger than the first area, wherein the vibration generator includes: a magnetic layer including a planar coil portion and having a polarity switchable with an applied current; and a vibration generating layer disposed between the magnetic layer and the magnet.

[0010] The foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the claimed subject matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings illustrate exemplary embodiments of the inventive concept and together with the description serve to explain the principles of the inventive concept. The accompanying drawings are included to provide a further understanding of the inventive concept and are incorporated in and constitute a part of this specification.

[0012] Figure 1 is a perspective view of a display device according to some exemplary embodiments.

[0013] Figure 2 is an exploded perspective view of a display device according to some exemplary embodiments.

[0014] Figure 3 is a diagram showing an example of an apparatus attached to a Figure 2 Bottom view of the display panel with a cover window.

[0015] Figure 4 is a diagram showing a method according to some exemplary embodiments Figure 2 An example of a floor plan of a medium frame.

[0016] Figure 5 is a diagram showing a method according to some exemplary embodiments Figure 2 A plan view of the main circuit board.

[0017] Figure 6 According to some exemplary embodiments, Figure 3 A cross-sectional view taken along the section line II'.

[0018] Figure 7 It specifically shows that according to some exemplary embodiments Figure 6 A cross-sectional view of a display area of ​​a display panel.

[0019] Figure 8 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0020] Fig. 9According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0021] Fig.10 is a perspective view of a vibration generator according to some exemplary embodiments.

[0022] Fig.11 is a cross-sectional view of a vibration generator according to some exemplary embodiments.

[0023] Fig.12 is a view illustrating a method of vibrating a vibration layer disposed between first and second branch electrodes of a vibration generator according to some exemplary embodiments.

[0024] Fig.13 is a diagram of a magnet according to some exemplary embodiments.

[0025] Fig.14 is a diagram of a magnet according to some exemplary embodiments.

[0026] Fig.15 and Fig.16 is a view illustrating a method of vibrating a display panel according to some exemplary embodiments.

[0027] Fig.17 and Fig.18 is a diagram of a magnet according to some exemplary embodiments.

[0028] Fig.19 and Fig. 20 is a view illustrating a method of vibrating a display panel according to some exemplary embodiments.

[0029] Fig.21 and Fig. 22 is a view illustrating a method of vibrating a display panel according to some exemplary embodiments.

[0030] Fig.23 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0031] Fig.24 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0032] Fig.25 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0033] Fig.26 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0034] Fig. 27 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0035] Fig.28 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0036] Fig.29 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0037] Fig.30 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0038] Fig.31 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0039] Fig.32 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0040] Fig.33 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0041] Fig.34 According to some exemplary embodiments, Fig.33 A view of the arrangement of the bonding portion between the display panel and the film layer in an embodiment.

[0042] Fig.35 According to some exemplary embodiments, Fig.33 FIG. 1 is a view showing an arrangement of an adhesive portion between a display panel and a film layer in another exemplary embodiment.

[0043] Fig.36 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0044] Fig.37 is a perspective view of a vibration generator according to some exemplary embodiments.

[0045] Fig.38 is a cross-sectional view of a vibration generator according to some exemplary embodiments.

[0046] Fig.39 and Fig.40 is a view illustrating a method of vibrating a display panel according to some exemplary embodiments. DETAILED DESCRIPTION

[0047] In the following description, for the purpose of explanation, many specific details are set forth to provide a thorough understanding of various exemplary embodiments. As used herein, the terms "embodiment" and "implementation method" are used interchangeably and are non-limiting examples of one or more of the inventive concepts disclosed herein. However, it is apparent that various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. In other examples, known structures and devices are shown in block diagram form to avoid making various exemplary embodiments unnecessarily obscure. In addition, various exemplary embodiments may be different, but need not be exclusive. For example, without departing from the inventive concept, the specific shape, construction and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0048] Unless otherwise specified, the illustrated exemplary embodiments will be understood as providing exemplary features of different details of some exemplary embodiments. Therefore, unless otherwise specified, the various illustrated features, components, modules, layers, films, panels, regions, aspects, etc. (hereinafter individually or collectively referred to as "elements" or "multiple elements") may be further combined, separated, interchanged and / or rearranged without departing from the inventive concept.

[0049] The use of cross hatching and / or shadows in the drawings is generally provided to make the boundaries between adjacent elements clear. Thus, unless otherwise specified, the presence or absence of cross hatching or shadows does not express or indicate any preference or requirement for a specific material, material property, size, ratio, commonality between the elements shown, and / or any other characteristics, attributes, properties, etc. of the elements. In addition, in the drawings, the size and relative size of the elements may be exaggerated for the purpose of clarity and / or description. Thus, the size and relative size of each element are not necessarily limited to the size and relative size shown in the drawings. When the exemplary embodiments may be implemented differently, the specific process sequence may be performed differently from the described sequence. For example, two processes described in succession may be performed substantially simultaneously or in an order opposite to the described sequence. In addition, the same reference numerals represent the same elements.

[0050] When an element such as a layer is referred to as being "on" another element, "connected to" another element, or "bonded to" another element, the element may be directly on the other element, directly connected to the other element, or directly bonded to the other element, or there may be an intermediate element. However, when an element is referred to as being "directly on" another element, "directly connected to" another element, or "directly bonded to" another element, there is no intermediate element. Other terms and / or phrases used to describe the relationship between elements should be interpreted in a similar manner, for example, "between" and "directly between", "adjacent" and "directly adjacent", etc. In addition, the term "connection" may refer to physical connection, electrical connection, and / or fluid connection. In addition, the X-axis, the Y-axis, and the Z-axis are not limited to the three axes of a rectangular coordinate system, and may be interpreted in a broader sense. For example, the X-axis, the Y-axis, and the Z-axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purpose of this disclosure, "at least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z, such as XYZ, XYY, YZ, and ZZ for example. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0051] 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 used to distinguish one element from another element. Therefore, without departing from the disclosed teachings, the first element discussed below may be named as the second element.

[0052] For descriptive purposes, spatially relative terms such as "under", "below", "bottom", "below", "lower", "lower side", "lower surface", "above", "upper", "on", "above", "top", "higher", "upper side", "upper surface", "side" (e.g., as in "sidewall"), "left", "right", etc. may be used herein to describe the relationship of one element to another (or other) elements as shown in the accompanying drawings. In addition to the orientation depicted in the accompanying drawings, the spatially relative terms are intended to cover different orientations of the device in use, operation and / or manufacture. For example, if the device in the accompanying drawings is turned over, the elements described as "under" or "below" other elements or features will then be positioned as "above" the other elements or features. Therefore, the exemplary term "under" can include both above and below orientations. In addition, the device can be oriented otherwise (e.g., rotated 90 degrees or at other orientations), so the spatially relative descriptors used herein are interpreted accordingly. Generally, in this specification, "on", "above", "top", "upper side" or "upper surface" means the direction in which the cover window 100 is disposed relative to the display panel 300, that is, the Z-axis direction, and "under", "below", "bottom", "lower side" or "lower surface" means the direction in which the middle frame 600 is disposed relative to the display panel 300, that is, the direction opposite to the Z-axis direction. In addition, "left", "right", "upper" and "lower" mean directions when the display panel 300 is viewed from a plane. For example, "left" means the direction opposite to the X-axis direction, "right" means the X-axis direction, "upper" means the Y-axis direction, and "lower" means the direction opposite to the Y-axis direction.

[0053] The term used here is for the purpose of describing specific embodiments, and is not intended to be limiting. As used here, the singular "one (kind / person)" and "the (described)" are also intended to include plural forms, unless the context clearly indicates otherwise. In addition, when the terms "include" and / or "comprise" are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, elements, components and / or their groups, but one or more other features, integral bodies, steps, operations, elements, components and / or their groups are not excluded from existence or addition. It is also noted that, as used here, the terms "substantially", "about" and other similar terms are used as approximate terms and not as degree terms, and are used to explain the measured values, calculated values ​​and / or the inherent deviations of the values ​​that will be recognized by those of ordinary skill in the art.

[0054] Various exemplary embodiments are described herein with reference to cross-sectional views, isometric views, perspective views, plan views, and / or exploded views that are schematic diagrams of idealized exemplary embodiments and / or intermediate structures. As such, variations in the shapes of the illustrations caused by, for example, manufacturing techniques and / or tolerances are contemplated. Therefore, the exemplary embodiments disclosed herein should not be construed as limited to the specific illustrated shapes of the regions, but rather include deviations in shapes caused by, for example, manufacturing. To this end, the regions shown in the drawings may be schematic in nature, and the shapes of these regions may not reflect the actual shapes of the regions of the device, and as such, are not intended to be limiting.

[0055] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. Terms (such as those defined in general dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0056] As is customary in the art, some exemplary embodiments are described and shown in the accompanying drawings according to functional blocks, units and / or modules. It will be appreciated by those skilled in the art that these blocks, units and / or modules are physically implemented by electronic circuits (or optical circuits) such as logic circuits, discrete components, microprocessors, hard-wired circuits, memory elements, wiring connections, etc., which can be formed using semiconductor-based manufacturing techniques or other manufacturing techniques. In the case where blocks, units and / or modules are implemented by microprocessors or other similar hardware, blocks, units and / or modules can be programmed and controlled using software (e.g., microcode) to perform various functions discussed herein, and can be optionally driven by firmware and / or software. It is also contemplated that each block, unit and / or module can be implemented by dedicated hardware, or can be implemented as a combination of dedicated hardware that performs some functions and processors (e.g., one or more programmed microprocessors and related circuits) that perform other functions. In addition, without departing from the inventive concept, each block, unit and / or module of some exemplary embodiments can be physically separated into two or more interactive and discrete blocks, units and / or modules. Furthermore, without departing from the inventive concept, the blocks, units and / or modules of some exemplary embodiments may be physically combined into more complex blocks, units and / or modules.

[0057] Hereinafter, various exemplary embodiments will be described in detail with reference to the accompanying drawings. Figure 1 is a perspective view of a display device according to some exemplary embodiments. Figure 2 is an exploded perspective view of a display device according to some exemplary embodiments.

[0058] Reference Figure 1 and Figure 2 The display device 10 in some exemplary embodiments may include a cover window 100, a display panel 300, a display circuit board 310, a display driving circuit 320, a panel lower cover or a panel lower member 400, a vibration generator 510, a middle frame 600, a main circuit board 700 and a lower cover 900.

[0059] The display device 10 may have a rectangular (or substantially rectangular) shape in a plan view. Figure 1 and Figure 2 As shown in , the display device 10 may have a rectangular planar shape having a short side along a first direction (X-axis direction) and a long side along a second direction (Y-axis direction). The edge at the intersection of the short side along the first direction (X-axis direction) and the long side along the second direction (Y-axis direction) may be formed into a circular (or substantially circular) shape having a predetermined curvature (or a common curvature) or having a right angle (or substantially right angle) shape. The planar shape of the display device 10 is not limited to a rectangular shape, and may be formed into another polygonal (or substantially polygonal) shape, a circular (or substantially circular) shape, or an elliptical (or substantially elliptical) shape.

[0060] The display device 10 may include a first region DR1 formed flat and a second region DR2 extending from the right and left sides of the first region DR1. The second region DR2 may be formed flat or curved. When the second region DR2 is formed flat, an angle formed by the first region DR1 and the second region DR2 may be an obtuse angle. When the second region DR2 is formed curved, the second region DR2 may have a constant curvature or a variable curvature.

[0061] Although in Figure 1 1 shows that the second region DR2 may extend from both the left and right sides of the first region DR1, but some exemplary embodiments are not limited thereto. For example, the second region DR2 may extend from only one of the left and right sides of the first region DR1. In addition, the second region DR2 may extend from only one of the upper and lower sides of the first region DR1 and only one of the left and right sides of the first region DR1. Hereinafter, the second region DR2 may be disposed along the left and right edges of the display device 10.

[0062] The cover window 100 may be disposed on the display panel 300 to cover the upper surface of the display panel 300. Therefore, the cover window 100 may play a role in protecting the upper surface of the display panel 300.

[0063] The cover window 100 may include a light-transmitting area DA100 corresponding to the display panel 300 and a light-blocking area NDA100 corresponding to an area other than the display panel 300. The cover window 100 may be disposed in the first area DR1 and the second area DR2, and the light-transmitting area DA100 may be disposed in a portion of the first area DR1 and a portion of the second area DR2. The light-blocking area NDA100 may be formed to be opaque. Alternatively, the light-blocking area NDA100 may be formed as a decorative layer having a pattern that may be visible to a user when an image is not displayed. For example, a company logo or various characters may be patterned on the light-blocking area NDA100. In addition, the light-blocking area NDA100 may be provided with a first camera hole CMH1 for exposing the front camera 740, but some exemplary embodiments are not limited thereto. For example, the first camera hole CMH1 may also be formed in the light-transmitting area DA100, but not in the light-blocking area NDA100. For example, the display panel 300 may include a through hole for exposing the front camera 740.

[0064] The display panel 300 may be disposed under the cover window 100. The display panel 300 may be disposed to overlap the light-transmitting area DA100 of the cover window 100. The display panel 300 may be disposed in the first region DR1 and the second region DR2. Therefore, an image of the display panel 300 may be viewed not only in the first region DR1 but also in the second region DR2.

[0065] The display panel 300 may be a light-emitting display panel including a light-emitting element. Examples of the display panel 300 may include an organic light-emitting display panel using an organic light-emitting diode including an organic light-emitting layer, an ultra-fine light-emitting diode display panel using an ultra-fine light-emitting diode (ultra-fine LED), a quantum dot light-emitting diode display panel using a quantum dot light-emitting diode including a quantum dot light-emitting layer, and an inorganic light-emitting display panel using an inorganic light-emitting diode including an inorganic semiconductor. Hereinafter, it is assumed that the display panel 300 is an organic light-emitting display panel.

[0066] The display circuit board 310 and the display driving circuit 320 may be attached to one side of the display panel 300. One end of the display circuit board 310 may be attached to a pad (also referred to as a "pad" or "pad") provided on one side of the display panel 300 using an anisotropic conductive film. The display circuit board 310 may be a flexible printed circuit board.

[0067] The display driving circuit 320 may receive a control signal and a power supply voltage through the display circuit board 310, and generate and output a signal and a voltage for driving the display panel 300. The display driving circuit 320 may be formed as an integrated circuit, and may be attached to the protruding area PA of the display panel 300 using a chip on glass (COG) method, a chip on plastic (COP) method, or an ultrasonic method (see FIG. Figure 6 ), but the exemplary embodiment is not limited thereto. For example, the display driving circuit 320 may be attached to the display circuit board 310.

[0068] The touch drive circuit 330 may be provided on the display circuit board 310. The touch drive circuit 330 may be formed as an integrated circuit and may be attached to the upper surface of the display circuit board 310. The touch drive circuit 330 may be connected to the touch electrodes and touch lines of the touch sensor layer of the display panel 300 through the display circuit board 310. The touch drive circuit 330 may apply a touch drive signal to a drive electrode among the touch electrodes in a mutual capacitance manner, and may sense a charge change of the capacitance between the drive electrode and the sensing electrode through a sensing electrode among the touch electrodes, thereby sensing a touch.

[0069] The vibration driving circuit 340 may be provided on the display circuit board 310. The vibration driving circuit 340 may receive vibration data from the main processor 710. The vibration driving circuit 340 may generate a first A driving voltage and a first B driving voltage according to the first vibration data, and output the first A driving voltage and the first B driving voltage to the vibration generator 510. The vibration generator 510 may vibrate according to the first A driving voltage and the first B driving voltage, and may vibrate the display panel 300 to output sound.

[0070] The vibration driving circuit 340 may include: a digital signal processor (DSP) for processing vibration data, which may be a digital signal; a digital-to-analog converter (DAC) for converting the vibration data processed by the digital signal processor (DSP) into a driving voltage, which may be an analog signal; and an amplifier (AMP) for amplifying and outputting the driving voltage.

[0071] The panel lower member 400 may be disposed under the display panel 300. The panel lower member 400 may be attached to a lower surface of the display panel 300 via an adhesive member.

[0072] The middle frame 600 may be disposed under the panel lower member 400. The middle frame 600 may include plastic, metal, or both plastic and metal.

[0073] The middle frame 600 may be provided with: a second camera hole CMH2 into which the camera device 720 is inserted; a battery hole BH into which a battery may be disposed; and a cable hole CAH through which a cable 314 may be connected to the display circuit board 310 .

[0074] The magnets MS1 and MS2 and the vibration generator 510 may be disposed between the panel lower member 400 and the middle frame 600. The magnets MS1 and MS2 may represent objects having a magnetic field. Illustratively, the magnets MS1 and MS2 may be objects that continuously have a magnetic field or objects that instantaneously have a magnetic field according to the flow of current. The vibration generator 510 may be a piezoelectric element or a piezoelectric actuator that may vibrate the display panel 300 using a piezoelectric material that contracts and expands according to an applied voltage.

[0075] Although in Figure 2 3 shows that the magnets MS1 and MS2 and the vibration generator 510 can be positioned close to the upper side of the display panel 300, but the positions of the magnets MS1 and MS2 and the vibration generator 510 are not limited thereto. The magnets MS1 and MS2 and the vibration generator 510 can be disposed in an area where there is no or substantially no mechanical interference with the display circuit board 310 and the battery hole BH and the second camera hole CMH2 formed in the middle frame 600. For example, the magnets MS1 and MS2 and the vibration generator 510 may not overlap with the display circuit board 310 and the battery hole BH and the second camera hole CMH2 formed in the middle frame 600 in the thickness direction (Z-axis direction) of the display panel 300.

[0076] When the magnets MS1 and MS2 and the vibration generator 510 overlap with the battery hole BH in which the battery is disposed, the magnets MS1 and MS2 and the vibration generator 510 may be affected by heat generated from the battery. In some exemplary embodiments, the magnets MS1 and MS2 and the vibration generator 510 may be disposed so as not to overlap with the battery hole BH in the thickness direction (Z-axis direction) of the display panel 300.

[0077] The main circuit board 700 may be disposed under the middle frame 600. The main circuit board 700 may be a printed circuit board or a flexible printed circuit board.

[0078] The main circuit board 700 may include a main processor 710, a camera device 720, a main connector 730, a front camera 740, and a microphone 750. The camera device 720 may be disposed on both the upper surface and the lower surface of the main circuit board 700, the main processor 710 may be disposed on the upper surface of the main circuit board 700, and the main connector 730 may be disposed on the lower surface of the main circuit board 700.

[0079] The main processor 710 can control all functions of the display device 10. For example, the main processor 710 can output digital video data to the display drive circuit 320 through the display circuit board 310, so that the display panel 300 can display an image. In addition, the main processor 710 can receive touch data from the touch drive circuit 330, can determine the user's touch position, and then can execute the application represented by the icon displayed at the user's touch position. In addition, the main processor 710 can receive touch data from the touch drive circuit 330, and can execute the application represented by the icon displayed at the user's touch position according to the touch data.

[0080] The main processor 710 may output the vibration data to the vibration driving circuit 340 for driving the vibration generator 510 so that the display panel 300 is vibrated by the vibration generator 510 to output sound.

[0081] The main processor 710 may be an application processor, a central processing unit, or a system chip, which may include an integrated circuit.

[0082] The camera device 720 is able to process image frames such as still images or moving images obtained by an image sensor in a camera mode and output the processed image frames to the main processor 710 .

[0083] The cable 314 having passed through the cable hole CAH of the middle frame 600 may be connected to the main connector 730. Therefore, the main circuit board 700 may be electrically connected to the display circuit board 310 and the touch driving circuit 330.

[0084] In addition, the main circuit board 700 may also be provided with a mobile communication module capable of transmitting / receiving radio signals to / from at least one of a base station, an external terminal, and a server. The radio signal may include various types of data according to voice signals, video call signals, or text / multimedia message transmission / reception.

[0085] The lower cover 900 may be disposed under the middle frame 600 and the main circuit board 700. The lower cover 900 may be coupled and fixed to the middle frame 600. The lower cover 900 may form a lower surface appearance of the display device 10. The lower cover 900 may include plastic and / or metal.

[0086] The lower cover 900 may be provided with a third camera hole CMH3, into which the camera device 720 may be inserted to protrude outward. The position of the camera device 720 and the positions of the second camera hole CMH2 and the third camera hole CMH3 corresponding to the camera device 720 are shown in FIG. Figure 2 The embodiment shown in is taken as an example.

[0087] according to Figure 1 and Figure 2 In the exemplary embodiment shown in , a vibration generator 510 for vibrating the display panel 300 to output sound and magnets MS1 and MS2 may be provided on one surface of the display panel 300. For example, by using the vibration generator 510 which may not be exposed to the outside, it is possible to use the display panel 300 as a vibration surface to output sound. In some exemplary embodiments, since a call receiver for outputting the other party's voice on the front of the display device may be omitted, the light-transmitting area DA100 of the cover window 100 may be expanded, and thus the area in which the image is displayed by the display panel 300 may be expanded. In addition, the vibration characteristics may be improved by the magnets MS1 and MS2 to improve the sound output, and a cantilever portion may be formed in the vibration generator 510 to enhance the bass characteristics.

[0088] Figure 3 is a diagram showing an example of an apparatus attached to a Figure 2 Bottom view of the display panel with a cover window. Figure 4 is a diagram showing a method according to some exemplary embodiments Figure 2 An example of a floor plan of a medium frame. Figure 5 is a diagram showing a method according to some exemplary embodiments Figure 2 A plan view of the main circuit board.

[0089] Reference Figures 3 to 5 , the panel lower cover 400 may be disposed under the display panel 300. The panel lower cover 400 may be attached to the lower surface of the display panel 300 via an adhesive member. The adhesive member may be a pressure sensitive adhesive (PSA).

[0090] The vibration generator 510 and the first magnet MS1 may be disposed under the panel cover 400. The first magnet MS1 may be attached to the lower surface of the panel cover 400 via an adhesive member. The adhesive member may be a pressure sensitive adhesive (PSA). In addition, the vibration generator 510 may be attached to the first magnet MS1 via an adhesive member as discussed below. Figure 8 For example, the area of ​​the first magnet MS1 may be smaller than the area of ​​the vibration generator 510. However, exemplary embodiments are not limited thereto. In some exemplary embodiments, the area of ​​the first magnet MS1 may be equal to or larger than the area of ​​the vibration generator 510.

[0091] In some exemplary embodiments, the first magnet MS1 may overlap with the central portion of the vibration generator 510 in the third direction (Z-axis direction). However, exemplary embodiments are not limited thereto. In some exemplary embodiments, the first magnet MS1 may be positioned at one end or the other end of the vibration generator 510 and may overlap with the vibration generator 510 in the third direction (Z-axis direction).

[0092] Although in Figures 2 to 4 It is shown in the figure that the vibration generator 510 and each of the magnets MS1 and MS2 can have a rectangular (or substantially rectangular) shape, but this is an example, and the vibration generator 510 and each of the magnets MS1 and MS2 can have various shapes, such as a polygonal (or substantially polygonal) shape, a circular (or substantially circular) shape, and an elliptical (or substantially elliptical) shape.

[0093] The vibration generator 510 may be electrically connected to the vibration driving circuit 340 that drives the vibration generator 510 through the flexible circuit board 520. Figure 3 5 shows that the flexible circuit board 520 can be bent once, but the shape of the flexible circuit board 520 is not limited thereto. The flexible circuit board 520 may be a flexible printed circuit board that can be bent.

[0094] The display circuit board 310 may be Figure 3 The display circuit board 310 may include a display circuit board 311 and a display circuit board 322. Figure 3 310a and the second connector 310b are shown in FIG. The first connector 310a may be connected to one end of the cable 314. The second connector 310b may be connected to one end of the flexible circuit board 520. The touch drive circuit 330 and the vibration drive circuit 340 may be disposed on one surface of the display circuit board 310, and the first connector 310a and the second connector 310b may be disposed on the other surface of the display circuit board 310 that is opposite to the one surface thereof. The other surface of the display circuit board 310 may be a surface facing the panel lower cover 400.

[0095] One end of the cable 314 can be connected to the first connector 310a. The other end of the cable 314 can be connected to the main connector 730 of the main circuit board 700 disposed under the middle frame 600 through the cable hole CAH penetrating the middle frame 600. Figure 4 and Figure 5 as shown in .

[0096] One end of the flexible circuit board 520 may be connected to the second connector 310 b , and the other end of the flexible circuit board 520 may be provided with a pad portion including a pad electrically connected to the vibration generator 510 .

[0097] Figure 6 According to some exemplary embodiments, Figure 3 A cross-sectional view taken along the section line II'. Figure 7 It specifically shows that according to some exemplary embodiments Figure 6 A cross-sectional view of a display area of ​​a display panel. Figure 8 According to some exemplary embodiments Figure 6An enlarged cross-sectional view of area A. Fig. 9 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0098] Reference Figures 6 to 9 The display panel 300 may include a substrate SUB1 and a pixel array layer PAL. The pixel array layer PAL may include Figure 7 The display panel 300 may include a thin film transistor layer 303, a light emitting element layer 304, and a thin film encapsulation layer 305, and may further include a touch sensor layer 306. The display area of ​​the display panel 300 may refer to an area where pixels of the light emitting element layer 304 are arranged (or formed) to display an image, and the non-display area of ​​the display panel 300 may refer to a peripheral area of ​​the display area. Figure 3 The X-axis direction and / or Y-axis direction are used to describe Figure 6 and Figure 6 The graph related to region A in .

[0099] The substrate SUB1 may be a rigid substrate or a flexible substrate capable of bending, folding, curling, etc. The substrate SUB1 may be made of an insulating material such as glass, quartz, or a polymer resin. Examples of polymer resins may include polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallyl ester, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP), and at least one of a combination thereof. The substrate SUB1 may include a metal material.

[0100] The thin film transistor layer 303 may be disposed on the substrate SUB1 , and may include a thin film transistor 335 , a gate insulating film 336 , an interlayer insulating film 337 , a protective film 338 , and a planarization film 339 .

[0101] The buffer film 302 may be formed between the substrate SUB1 and the thin film transistor layer 303. The buffer film 302 may be formed between the substrate SUB1 and the thin film transistor layer 303 to protect the thin film transistor 335 and the light emitting element that may be susceptible to moisture from being affected by moisture that penetrates through the substrate SUB1. The buffer film 302 may be formed of a plurality of alternately stacked inorganic films. For example, the buffer film 302 may be formed as a multilayer film in which one or more inorganic layers are alternately stacked, the inorganic layers including silicon oxide (SiO x ), Silicon Nitride (SiN x In some exemplary embodiments, the buffer film 302 may be omitted.

[0102] The thin film transistors 335 may be formed on the buffer film 302. Each of the thin film transistors 335 may include an active layer 331, a gate electrode 332, a source electrode 333, and a drain electrode 334. Figure 7 3 shows that the thin film transistor 335 is formed by a top gate method in which the gate electrode 332 is positioned on the active layer 331, but some exemplary embodiments are not limited thereto. For example, the thin film transistor 335 may be formed by a bottom gate method in which the gate electrode 332 may be positioned below the active layer 331, or may be formed by a dual gate method in which the gate electrode 332 may be positioned both on and below the active layer 331.

[0103] Taking the top gate mode as an example, the active layer 331 can be formed on the buffer film 302. The active layer 331 can be formed of a silicon-based semiconductor material or an oxide-based semiconductor material. A light-blocking layer for blocking external light incident on the active layer 331 can be formed between the buffer film 302 and the active layer 331.

[0104] The gate insulating film 336 may be formed on the active layer 331. The gate insulating film 336 may be formed of an inorganic film (eg, silicon oxide (SiO x ) film, silicon nitride (SiN x ) films and at least one of their multilayer films) are formed.

[0105] The gate electrode 332 and the gate line may be formed on the gate insulating film 336. The gate electrode 332 and the gate line may be formed of a single layer or a multilayer including at least one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and alloys thereof.

[0106] The interlayer insulating film 337 may be formed on the gate electrode 332 and the gate line. The interlayer insulating film 337 may be made of an inorganic film (eg, silicon oxide (SiO x ) film, silicon nitride (SiN x ) films and at least one of their multilayer films) are formed.

[0107] The source electrode 333, the drain electrode 334, and the data line may be formed on the interlayer insulating film 337. At least one or each of the source electrode 333 and the drain electrode 334 may be connected to the active layer 331 through a contact hole penetrating the gate insulating film 336 and the interlayer insulating film 337. The source electrode 333, the drain electrode 334, and the data line may be formed of a single layer or a multilayer including at least one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and alloys thereof.

[0108] A protective film 338 for insulating the thin film transistor 335 may be formed on the source electrode 333, the drain electrode 334, and the data line. The protective film 338 may be made of an inorganic film (eg, silicon oxide (SiO x ) film, silicon nitride (SiN x ) films and at least one of their multilayer films) are formed.

[0109] A planarization film 339 for planarizing a step caused by the thin film transistor 335 may be formed on the protective film 338. The planarization film 339 may be formed of an organic film including acrylic resin, epoxy resin, phenol resin, polyamide resin, or polyimide resin.

[0110] The light emitting element layer 304 may be formed on the thin film transistor layer 303. The light emitting element layer 304 may include a light emitting element and a pixel defining film 344.

[0111] A light emitting element and a pixel defining film 344 may be formed on the planarization film 339. The light emitting element may be an organic light emitting element including an anode electrode 341, a light emitting layer 342, and a cathode electrode 343.

[0112] The anode electrode 341 may be formed on the planarization film 339. The anode electrode 341 may be connected to the source electrode 333 or the drain electrode 334 of the thin film transistor 335 through a contact hole penetrating the protection film 338 and the planarization film 339.

[0113] The pixel defining film 344 may be formed on the planarization film 339 to cover the edge of the anode electrode 341 to define the pixel. For example, the pixel defining film 344 is used to define the pixel. At least one or each of the pixels represents a region where the anode electrode 341, the light emitting layer 342, and the cathode electrode 343 are sequentially stacked, and holes from the anode electrode 341 and electrons from the cathode electrode 343 are combined with each other in the light emitting layer 342 to emit light.

[0114] The light-emitting layer 342 is formed on the anode 341 and the pixel defining film 344. The light-emitting layer 342 is an organic light-emitting layer. The light-emitting layer 342 may emit one of red light, green light, and blue light. The light-emitting layer 342 may be a white light-emitting layer that emits white light. In this case, the light-emitting layer 342 may have a stacked structure of a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer, and may be a common layer formed in common in the pixel. In this case, the display panel 300 may also include separate color filters for displaying red, green, and blue.

[0115] The light emitting layer 342 may include a hole transport layer, a light emitting layer, and an electron transport layer. In addition, the light emitting layer 342 may be formed in a tandem structure having two stacks or more, in which case a charge generation layer may be formed between the stacks.

[0116] The cathode electrode 343 may be formed on the light emitting layer 342. The cathode electrode 343 may be formed to cover the light emitting layer 342. The cathode electrode 343 may be a common layer commonly formed in pixels.

[0117] When the light emitting element layer 304 is formed by a top emission method in which light is emitted upward, the anode electrode 341 may be formed of a high reflectivity metal material such as a laminated structure of aluminum and titanium (Ti / Al / Ti), a laminated structure of aluminum and ITO (ITO / Al / ITO), an APC alloy, and a laminated structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy may be an alloy of silver (Ag), palladium (Pd), and copper (Cu). The cathode electrode 343 may be formed of a light-transmitting transparent conductive material (TCO) such as ITO or IZO or a semi-transmissive conductive material such as magnesium (Mg), silver (Ag), and an alloy of magnesium (Mg) and silver (Ag). When the cathode electrode 343 is formed of a semi-transmissive conductive material, the light emitting efficiency may be improved by a microcavity.

[0118] When the light emitting element layer 304 is formed by a bottom emission method in which light is emitted downward, the anode electrode 341 may be formed of a transparent conductive material (TCO) such as ITO or IZO or a semi-transmissive conductive material such as an alloy of magnesium (Mg), silver (Ag) or magnesium (Mg) and silver (Ag). The cathode electrode 343 may be formed of a high reflectivity metal material such as a laminated structure of aluminum and titanium (Ti / Al / Ti), a laminated structure of aluminum and ITO (ITO / Al / ITO), an APC alloy or a laminated structure of an APC alloy and ITO (ITO / APC / ITO). When the anode electrode 341 is formed of a semi-transmissive conductive material, the light emitting efficiency may be improved by a microcavity.

[0119] The thin film encapsulation layer 305 may be formed on the light emitting element layer 304. The thin film encapsulation layer 305 may be used to prevent oxygen or moisture from penetrating the light emitting layer 342 and the cathode electrode 343. For example, the thin film encapsulation layer 305 may include at least one inorganic film. The inorganic film may be formed of at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, and titanium oxide. The thin film encapsulation layer 305 may also include at least one organic film. The organic film may be formed to have a sufficient thickness to prevent foreign matter (particles) from penetrating the thin film encapsulation layer 305 and entering the light emitting layer 342 and the cathode electrode 343. The organic film may include any one of epoxy resin, acrylate, and urethane acrylate.

[0120] The touch sensor layer 306 may be formed on the thin film encapsulation layer 305. When the touch sensor layer 306 is directly formed on the thin film encapsulation layer 305, the thickness of the display device 10 may be reduced, compared to when a separate touch panel is attached to the thin film encapsulation layer 305.

[0121] The touch sensor layer 306 may include a touch electrode for sensing the touch of a user in a capacitive manner and a touch wire for connecting the pad to the touch electrode. For example, the touch sensor layer 306 may sense the touch of a user in a self-capacitive manner or a mutual-capacitive manner.

[0122] The touch electrodes of the touch sensor layer 306 may be arranged in the display area, and the touch lines of the touch sensor layer 306 may be arranged in the non-display area.

[0123] like Figure 6 As shown in , the polarizing film PF may be disposed on the pixel array layer PAL of the display panel 300 to prevent visibility degradation due to external light reflection. The polarizing film PF may include a linear polarizer and a phase delay film such as a quarter wave plate. In this case, the phase delay film may be disposed on the display panel 300, and the linear polarizer may be disposed between the phase delay film and the cover window 100.

[0124] The cover window 100 may be disposed on the polarizing film PF. The cover window 100 may be attached to the upper surface of the polarizing film PF via an adhesive member. The cover window 100 may be made of at least one of glass, sapphire, and plastic. The cover window 100 may be rigid or flexible. The adhesive member may be at least one of an optically clear adhesive (OCA) film and an optically clear resin (OCR) film.

[0125] The panel cover 400 may be disposed under the substrate SUB1 of the display panel 300. Figure 8 As shown in FIG. 4 , the panel lower cover 400 may include a light absorbing member 410 for absorbing light incident from the outside, a buffer member 420 for absorbing external impact, and a heat radiation member 430 for effectively radiating heat of the display panel 300 .

[0126] The light absorbing member 410 may be disposed under the display panel 300. The light absorbing member 410 may suppress the transmission of light to prevent components disposed under the light absorbing member 410, for example, the display circuit board 310, the vibration generator 510, etc., from being seen from above the display panel 300. The light absorbing member 410 may include a light absorbing material such as a black pigment or dye.

[0127] The buffer member 420 may be disposed below the light absorbing member 410. The buffer member 420 may absorb external impact to prevent the display panel 300 from being damaged. The buffer member 420 may be formed as a single layer or multiple layers. For example, the buffer member 420 may be formed of at least one of polymer resins such as polyurethane, polycarbonate, polypropylene, and polyethylene, or may be formed of an elastic material such as rubber, urethane material, or a sponge formed by foaming an acrylic material. The buffer member 420 may be a cushion layer.

[0128] The heat radiation member 430 may be disposed under the buffer member 420. The heat radiation member 430 may include a first heat radiation layer 432 including graphite or carbon nanotubes and a second heat radiation layer 433 capable of blocking electromagnetic waves and formed of a metal thin film of at least one of copper, nickel, ferrite, and silver having excellent thermal conductivity.

[0129] When the first magnet MS1 is disposed on the heat radiation member 430 of the panel lower cover 400, the first heat radiation layer 432 of the heat radiation member 430 may be damaged by the vibration of the first magnet MS1 due to the vibration of the vibration generator 510. Therefore, in the area where the first magnet MS1 is disposed, a receiving hole AH in which a portion of the heat radiation member 430 is removed may be formed, and the first magnet MS1 may be attached to the lower surface 422 of the buffer member 420 exposed by the receiving hole AH. However, some exemplary embodiments are not limited thereto. In some exemplary embodiments, the receiving hole AH may be formed by removing the buffer member 420 and the heat radiation member 430, and the first magnet MS1 may be attached to the lower surface 412 of the light absorbing member 410 exposed by the receiving hole AH. In addition, in some exemplary embodiments, as Fig. 9 As shown in , the accommodation hole AH may not be formed, in which case the first magnet MS1 may be attached to the lower surface 434 of the first heat radiation layer 432 .

[0130] The first surface or upper surface 521 of the first magnet MS1 may be attached and fixed to the lower surface 422 of the buffer member 420 via an adhesive member, and the second surface or lower surface 522 of the first magnet MS1 facing away from the first surface 521 thereof may be attached and fixed to the first surface or upper surface 540 of the vibration generator 510 by an adhesive. In some exemplary embodiments, the first magnet MS1 may further include side surfaces such as a first side surface 524 and a second side surface 526, and the vibration generator 510 may further include a second surface or lower surface 542.

[0131] The vibration generator 510 may include: a fixed part FP, attached and fixed to the first magnet MS1; a first cantilever part CAP1, disposed at one side of the fixed part FP; and a second cantilever part CAP2, disposed at the other side of the fixed part FP. The first cantilever part CAP1 and the second cantilever part CAP2 may be spaced apart from the panel lower member 400. The first cantilever part CAP1 and the second cantilever part CAP2 may amplify the low frequency band to improve the output of the sound of the low frequency band. The low frequency band may refer to a frequency band of 1kHz or less. In some exemplary embodiments, the lengths of the first cantilever part CAP1 and the second cantilever part CAP2 in the first direction (X-axis direction) may be equal to each other. For example, a set low frequency band may be amplified. However, some exemplary embodiments are not limited thereto, and the lengths of the first cantilever part CAP1 and the second cantilever part CAP2 in the first direction (X-axis direction) may be different from each other. In this case, two set low frequency bands may be amplified. For example, the lengths of the first cantilever part CAP1 and the second cantilever part CAP2 in the first direction (X-axis direction) may be changed differently according to the low frequency band to be amplified.

[0132] The flexible circuit board 520 may be disposed at one side of the lower surface 542 of the vibration generator 510. The electrodes of the vibration generator 510 may be electrically connected to pads of a pad portion of the other end of the flexible circuit board 520 at one side of the vibration generator 510.

[0133] The first surface or lower surface 530 of the second magnet MS2 may be attached and fixed to the upper surface 602 of the middle frame 600 via an adhesive member. In some exemplary embodiments, the second magnet MS2 may have a second surface or upper surface 532 and side surfaces such as a first side surface 534 and a second side surface 536. The second magnet MS2 may overlap with the first magnet MS1 in a third direction (Z-axis direction) as a thickness direction. The second magnet MS2 may overlap with the fixed portion FP of the vibration generator 510 in the third direction (Z-axis direction), and the second magnet MS2 may be spaced apart from the vibration generator 510 in the third direction (in the Z-axis direction). The distance between the second magnet MS2 and the vibration generator 510 is larger than the vibration displacement of the vibration generator 510. Therefore, even when the vibration generator 510 vibrates, the vibration generator 510 and the second magnet MS2 do not contact each other.

[0134] Fig.10 is a perspective view of a vibration generator according to some exemplary embodiments. Fig.11 is a cross-sectional view of a vibration generator according to some exemplary embodiments. Fig.12 is a view illustrating a method of vibrating a vibration layer disposed between first and second branch electrodes of a vibration generator according to some exemplary embodiments.

[0135] Reference Figures 10 to 12 The vibration generator 510 may be a piezoelectric element or a piezoelectric actuator for vibrating the display panel 300 using a piezoelectric material that contracts or expands according to an applied voltage. The vibration generator 510 may include a vibration layer 511, a first electrode 512, and a second electrode 513. Figures 10 to 12 In the figure, for the convenience of explanation, the flexible circuit board 520 is omitted.

[0136] The first electrode 512 may include a first trunk electrode 5121 and first branch electrodes 5122 .

[0137] The first trunk electrode 5121 may be disposed on at least one side surface of the vibration layer 511. Fig.11 As shown in . Illustratively, the first trunk electrode 5121 may be disposed to penetrate a portion of the vibration layer 511 . In some exemplary embodiments, the first trunk electrode 5121 may be disposed on an upper surface of the vibration layer 511 .

[0138] The first branch electrodes 5122 may branch from the first trunk electrode 5121. The first branch electrodes 5122 may be arranged in parallel with each other.

[0139] The second electrode 513 may include a second trunk electrode 5131 and a second branch electrode 5132. The second electrode 513 may be disposed to be spaced apart from the first electrode 512. Therefore, the second electrode 513 may be electrically separated from the first electrode 512. The second trunk electrode 5131 may be disposed on at least one side surface of the vibration layer 511. In this case, the first trunk electrode 5121 may be disposed on a first side surface of the vibration layer 511, and the second trunk electrode 5131 may be disposed on a second side surface of the vibration layer 511. In some exemplary embodiments, the second trunk electrode 5131 may be disposed to penetrate a portion of the vibration layer 511. In addition, in some exemplary embodiments, the second trunk electrode 5131 may be disposed on an upper surface of the vibration layer 511.

[0140] The second branch electrodes 5132 may branch from the second trunk electrode 5131. The second branch electrodes 5132 may be arranged in parallel with each other.

[0141] The first branch electrode 5122 and the second branch electrode 5132 may be disposed or arranged parallel to each other in the horizontal direction (X-axis direction or Y-axis direction). In addition, the first branch electrode 5122 and the second branch electrode 5132 may be alternately disposed or arranged in the vertical direction (Z-axis direction). For example, the first branch electrode 5122 and the second branch electrode 5132 may be repeatedly arranged in the vertical direction (Z-axis direction) in the order of the first branch electrode 5122, the second branch electrode 5132, the first branch electrode 5122 and the second branch electrode 5132.

[0142] The first electrode 512 and the second electrode 513 may be connected to the pad of the flexible circuit board 520. The pad of the flexible circuit board 520 may be connected to the first electrode 512 and the second electrode 513 disposed on one surface of the vibration generator 510.

[0143] The vibration layer 511 may be a piezoelectric element that can be deformed according to a driving voltage applied to the first electrode 512 and a driving voltage applied to the second electrode 513. In this case, the vibration layer 511 may be made of any one of a piezoelectric material such as at least one of polyvinylidene fluoride (PVDF) and lead zirconate titanate (PZT) and an electroactive polymer.

[0144] Generally, the vibration layer 511 may be formed at a high temperature, and in some exemplary embodiments, the first electrode 512 and the second electrode 513 may be formed of silver (Ag) or an alloy of silver (Ag) and palladium (Pd), both of which have a high melting point. When the first electrode 512 and the second electrode 513 are formed of an alloy of silver (Ag) and palladium (Pd) to increase the melting point of the first electrode 512 and the second electrode 513, the content of silver (Ag) may be higher than the content of palladium (Pd).

[0145] The vibration layer 511 may be disposed between the first branch electrode 5122 and the second branch electrode 5132. The vibration layer 511 may contract or expand according to a difference between a driving voltage applied to the first branch electrode 5122 and a driving voltage applied to the second branch electrode 5132.

[0146] Specifically, Fig.12As shown in , the polarity direction of the vibration layer 511 disposed between the first branch electrode 5122 and the second branch electrode 5132 disposed below the first branch electrode 5122 may be an upward direction (↑), and the vibration layer 511 can have a positive polarity in an upper region adjacent to the first branch electrode 5122, and can have a negative polarity in a lower region adjacent to the second branch electrode 5132. In addition, the polarity direction of the vibration layer 511 disposed between the second branch electrode 5132 and the first branch electrode 5122 disposed below the second branch electrode 5132 may be a downward direction (↓), and the vibration layer 511 can have a negative polarity in an upper region adjacent to the second branch electrode 5132, and can have a positive polarity in a lower region adjacent to the first branch electrode 5122. The polarity direction of the vibration layer 511 may be determined by a polarization process of applying an electric field to the vibration layer 511 using the first branch electrode 5122 and the second branch electrode 5132.

[0147] like Fig.12 As shown in , in the case where the polarity direction of the vibration layer 511 disposed between the first branch electrode 5122 and the second branch electrode 5132 disposed below the first branch electrode 5122 is an upward direction (↑), when a driving voltage with a positive polarity is applied to the first branch electrode 5122 and a driving voltage with a negative polarity is applied to the second branch electrode 5132, the vibration layer 511 may contract under the action of a first force F1. The first force F1 may be a contraction force. In addition, when a driving voltage with a negative polarity is applied to the first branch electrode 5122 and a driving voltage with a positive polarity is applied to the second branch electrode 5132, the vibration layer 511 may expand under the action of a second force F2. The second force F2 may be an expansion force.

[0148] For example, in the case where the polarity direction of the vibration layer 511 disposed between the second branch electrode 5132 and the first branch electrode 5122 disposed below the second branch electrode 5132 is in the downward direction (↓), when a driving voltage having a positive polarity is applied to the second branch electrode 5132 and a driving voltage having a negative polarity is applied to the first branch electrode 5122, the vibration layer 511 may expand under the action of the expansion force. In addition, when a driving voltage having a negative polarity is applied to the second branch electrode 5132 and a driving voltage having a positive polarity is applied to the first branch electrode 5122, the vibration layer 511 may contract under the action of the contraction force.

[0149] Fig.13 is a diagram of a magnet according to some exemplary embodiments. Fig.14 is a diagram of a magnet according to some exemplary embodiments.

[0150] Reference Fig.13In some exemplary embodiments, each of the first magnet MS1 and the second magnet MS2 may be a fixed magnet whose polarity does not change. For example, the first magnet MS1 and the second magnet MS2 may have a fixed first polarity P1 and a fixed second polarity P2, respectively.

[0151] The first magnet MS1 and the second magnet MS2 may face each other in a third direction (Z-axis direction), and a magnetic field MF may be formed between the first magnet MS1 and the second magnet MS2. In some exemplary embodiments, the surfaces of the first magnet MS1 and the second magnet MS2 facing each other may have the same polarity. For example, the upper surface of the first magnet MS1 may have the second polarity P2, and the lower surface of the first magnet MS1 facing the second magnet MS2 may have the first polarity P1. In some exemplary embodiments, the upper surface of the second magnet MS2 facing the lower surface of the first magnet MS1 may have the first polarity P1, and the lower surface of the second magnet MS2 may have the second polarity P2. The first polarity P1 may be S polarity, and the second polarity P2 may be N polarity. However, some exemplary embodiments are not limited thereto. The first polarity P1 may be N polarity, and the second polarity P2 may be S polarity. In some exemplary embodiments, the first magnet MS1 and the second magnet MS2 may include a magnetically rigid material such as neodymium. For example, the neodymium magnet may include neodymium-iron-boron (Nd—Fe—B), but the material thereof is not limited thereto.

[0152] Reference Fig.14 In some exemplary embodiments, the first magnet MS1_1 and the second magnet MS2_1 may be formed as a Halbach array. In the Halbach array, because the magnetic forces cancel each other out, the magnetic field MF may be densely and strongly formed on one side of the Halbach array, and may be formed very weakly on the other side of the Halbach array. Generally, when a magnet array is formed with the same number of magnets having the same strength, in the Halbach array, a strong magnetic field MF that is about 1.5 times stronger than the magnetic field of a series magnet array can be formed in one direction, and only a very weak magnetic field MF can be formed in the direction opposite to the direction.

[0153] For example, in the first magnet MS1_1, the N poles may be arranged in the order of right side, upper side, left side, lower side and right side in the first direction (X-axis direction), and may be connected to each other. Therefore, a magnetic field MF may be strongly formed in the direction opposite to the third direction (Z-axis direction), and a weak magnetic field MF may be formed in the third direction (Z-axis direction).

[0154] For example, in the second magnet MS2_1, the N poles may be arranged in the order of left side, lower side, right side, upper side, and left side in the first direction (X-axis direction), and may be connected to each other. Therefore, a magnetic field MF may be strongly formed in the third direction (Z-axis direction), and a weak magnetic field MF may be formed in the direction opposite to the third direction (Z-axis direction). However, the arrangement of the Halbach array of the first magnet MS1_1 and the second magnet MS2_1 is an example and is not limited thereto.

[0155] As described above, the first magnet MS1_1 and the second magnet MS2_1 may be configured in a Halbach array, which has the advantage of forming a strong magnetic field MF between the first magnet MS1_1 and the second magnet MS2_1.

[0156] Fig.15 and Fig.16 is a view showing a method of vibrating a display panel according to some exemplary embodiments. For ease of explanation, Fig.15 and Fig.16 Only the substrate SUB1 of the display panel 300 is shown.

[0157] Reference Fig.10 , Fig.15 and Fig.16 as well as Figure 6 As with the other figures discussed above, when the driving voltage applied to the first electrode 512 and the driving voltage applied to the second electrode 513 may be repeated alternately with positive polarity and negative polarity, the vibration layer 511 may repeatedly contract and expand, as shown in FIG. Fig.15 and Fig.16 As shown in . Therefore, the vibration generator 510 can vibrate. In this way, the vibration of the vibration layer 511 of the vibration generator 510 due to contraction and expansion can be transmitted to the first magnet MS1, so that the first magnet MS1 vibrates, and the display panel 300 can vibrate in the third direction (Z-axis direction) as the thickness direction by the vibration of the first magnet MS1, as shown in Fig.15 and Fig.16 as shown in .

[0158] The vibration generator 510 may have a first vibration surface BS1, and the first magnet MS1 may have a second vibration surface BS2 having an area smaller than that of the first vibration surface BS1. For example, the vibration of the vibration generator 510 having the first vibration surface BS1 may be transferred to the display panel 300 through the first magnet MS1 including the second vibration surface BS2 having an area smaller than that of the first vibration surface BS1 to strengthen the vibration, thereby improving the sound output of the display device 10. In addition, the vibration generator 510 may include the first cantilever portion CAP1 and the second cantilever portion CAP2 to amplify the low frequency band, thereby improving the output of the sound of the low frequency band.

[0159] In addition, if Fig.16 As shown in , when the vibration layer 511 expands to transmit force to the display panel 300 along the third direction (Z-axis direction), the repulsive force RF between the first magnet MS1 and the second magnet MS2 can be added, so there can be an advantage of increasing the force transmitted to the display panel 300 along the third direction (Z-axis direction).

[0160] Fig.17 and Fig.18 is a diagram of a magnet according to some exemplary embodiments. Fig.19 and Fig. 20 is a view illustrating a method of vibrating a display panel according to some exemplary embodiments.

[0161] Reference Fig.17 and Fig.18 In some exemplary embodiments, the second magnet MS2_2 may include a planar coil portion CP. For example, the second magnet MS2_2 may include: a base portion BP; a planar coil portion CP disposed on one surface of the base portion BP; and a first terminal T1 and a second terminal T2 connected to both ends of the planar coil portion CP.

[0162] The planar coil portion CP generating a magnetic field using the current I supplied through the first terminal T1 and the second terminal T2 may be formed of a coil spirally wound from the center toward the outside of the substrate 20, such as Fig.17 and Fig.18 However, exemplary embodiments are not limited thereto, and the planar coil portion CP may be formed of a coil wound in a shape other than a spiral shape.

[0163] The planar coil portion CP may include copper and may generate a magnetic field when a current I passes through the coil. Fig.17 As shown in , when current I(in) is applied to the planar coil portion CP through the first terminal T1 and current I(out) flows out through the second terminal T2, the second magnet MS2_2 may be in a first polarity state. Here, in the first polarity state, the upper portion of the second magnet MS2_2 may be an N pole, the lower portion thereof may be an S pole, and the current I applied to the first terminal T1 may be an AC current. In addition, as Fig.18As shown in , when the current I (in) is applied to the planar coil part CP through the second terminal T2 and the current I (out) flows out through the first terminal T1, the second magnet MS2_2 can be in a second polarity state. Here, in the second polarity state, the upper part of the second magnet MS2_2 can be an S pole, the lower part can be an N pole, and the current I applied to the second terminal T2 can be an AC current. In addition, although not shown, when the current I is not applied to the planar coil part CP, the second magnet MS2_2 can have a polarity. The second magnet MS2_2 can also include a low-pass filter (LPF). The low-pass filter (LPF) can be configured so that the current I is applied to the planar coil part CP only in a low-frequency signal corresponding to a low-pitched sound among the electrical voice signal. In some exemplary embodiments, the first terminal T1 and the second terminal T2 of the second magnet MS2_2 can be electrically connected to the vibration drive circuit 340. In addition, in some exemplary embodiments, the first terminal T1 and the second terminal T2 of the second magnet MS2_2 can be electrically connected to the first electrode 512 and the second electrode 513 of the vibration generator 510. As described above, when the second magnet MS2_2 includes the planar coil portion CP, there can be an advantage of switching polarity and an advantage of manufacturing the second magnet MS2_2 in a thin shape.

[0164] exist Fig.17 and Fig.18 In the description of the second magnet MS2_2, the second magnet MS2_2 has been described as a reference, but some exemplary embodiments are not limited thereto. In some exemplary embodiments, the first magnet MS1 may include a planar coil portion CP, and each of the first magnet MS1 and the second magnet MS2_2 may include a planar coil portion CP.

[0165] Fig.19 and Fig. 20 is a view illustrating a method of vibrating a display panel according to another exemplary embodiment. Fig.19 and Fig. 20 An exemplary embodiment of Fig.15 and Fig.16 The difference of the exemplary embodiment of the present invention is that the second magnet MS2_2 includes a planar coil portion to switch the polarity. Fig.15 and Fig.16 The description of the exemplary embodiments is repeated, and the differences will be mainly described.

[0166] Reference Fig.10 and Fig.19 When the vibration layer 511 contracts to transmit force to the display panel 300 in a direction opposite to the third direction (Z-axis direction), a current I(in) may be applied through the first terminal T1 of the second magnet MS2_2, as shown in FIG. Fig.17As shown in , the upper portion (first polarity state) of the second magnet MS2_2 may be an N pole and the lower portion thereof may be an S pole. For example, an attractive force AF may be generated between the first magnet MS1 and the second magnet MS2_2 to increase the force transmitted to the display panel 300 in a direction opposite to the third direction (Z-axis direction).

[0167] Reference Fig. 20 When the vibration layer 511 expands to transmit force to the display panel 300 along the third direction (Z-axis direction), a current I(in) may be applied through the second terminal T2 of the second magnet MS2_2, as shown in FIG. Fig.18 As shown in , the upper portion of the second magnet MS2_2 may be an S pole and the lower portion thereof may be an N pole (a second polarity state). For example, a repulsive force RF may be generated between the first magnet MS1 and the second magnet MS2_2 to increase the force transmitted to the display panel 300 in the third direction (Z-axis direction). As described above, when the second magnet MS2_2 is switched to apply an attractive force and a repulsive force according to the vibration of the vibration generator 510, the vibration of the vibration generator 510 may be effectively transmitted to the display panel 300 to improve the sound output of the display device 10.

[0168] Fig.21 and Fig. 22 is a view illustrating a method of vibrating a display panel according to some exemplary embodiments. Fig.21 and Fig. 22 An exemplary embodiment of Fig.19 and Fig. 20 The difference of the exemplary embodiment is that the second magnet MS2_2 has no polarity. Fig.19 and Fig. 20 The description of the exemplary embodiments is repeated, and the differences will be mainly described.

[0169] Reference Fig.21 , when the vibration layer 511 contracts to transmit a force to the display panel 300 in a direction opposite to the third direction (Z-axis direction), the current I(λ) may not be applied to the second magnet MS2_2, and the second magnet MS2_2 may not have polarity.

[0170] Reference Fig. 22When the vibration layer 511 expands to transfer force to the display panel 300 along the third direction (Z-axis direction), a current I(λ) may be applied through the second terminal T2 of the second magnet MS2_2, so that the upper portion of the second magnet MS2_2 may be an S pole and the lower portion thereof may be an N pole having polarity. For example, a repulsive force RF may be generated between the first magnet MS1 and the second magnet MS2_2 to increase the force transferred to the display panel 300 along the third direction (Z-axis direction). Although not shown, in some exemplary embodiments, when the vibration layer 511 contracts to transmit force to the display panel 300 in a direction opposite to the third direction (Z-axis direction), current I(in) may be applied through the first terminal T1 of the second magnet MS2_2, so that the upper portion of the second magnet MS2_2 may be an N pole and the lower portion thereof may be an S pole with polarity (first polarity state), and when the vibration layer 511 expands to transmit force to the display panel 300 in the third direction (Z-axis direction), current I(in) may not be applied to the second magnet MS2_2, and the second magnet MS2_2 may not have polarity.

[0171] Fig.23 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A. Fig.24 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A. Fig.25 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0172] Figure 23 to Figure 25 An exemplary embodiment of Fig. 9 The difference between the exemplary embodiment of the present invention and the exemplary embodiment of the present invention is that a support layer may be provided between the panel lower member 400 and the vibration generator 510. Fig. 9 The description of the exemplary embodiments is repeated, and the differences will be mainly described.

[0173] Reference Fig.23, the vibration generator 510 may include a fixing portion FP attached and fixed to the first magnet MS1, a first cantilever portion CAP1 disposed at one side of the fixing portion FP, and a second cantilever portion CAP2 disposed at the other side of the fixing portion FP. The support layer SL may be disposed between the first cantilever portion CAP1 and the panel lower member 400. In some exemplary embodiments, the upper surface of the support layer SL may be in contact with the panel lower member 400, and the lower surface of the support layer SL may be in contact with the first cantilever portion CAP1. However, some exemplary embodiments are not limited thereto. In some exemplary embodiments, the upper surface of the support layer SL may be in contact with the panel lower member 400, and the lower surface of the support layer SL may not be in contact with the first cantilever portion CAP1. In addition, in some exemplary embodiments, the upper surface of the support layer SL may not be in contact with the panel lower member 400, and the lower surface of the support layer SL may be in contact with the first cantilever portion CAP1.

[0174] In some exemplary embodiments, the end of the support layer SL and the end of the first cantilever portion CAP1 may be aligned in a third direction (Z-axis direction). However, some exemplary embodiments are not limited thereto. In some exemplary embodiments, the end of the support layer SL and the end of the first cantilever portion CAP1 may not be aligned. For example, the end of the support layer SL may be disposed inside the end of the first cantilever portion CAP1, and the end of the support layer SL may protrude from the end of the first cantilever portion CAP1 in a direction opposite to the first direction (X-axis direction).

[0175] The rigidity of the supporting layer SL and the rigidity of the first magnet MS1 may be different from each other. For example, the rigidity of the supporting layer SL may be less than the rigidity of the first magnet MS1. In some exemplary embodiments, the rigidity of the supporting layer SL may be negligibly low. For example, the supporting layer SL may not transmit the vibration of the vibration generator 510 to the display panel 300, and the vibration of the vibration generator 510 may be concentrated on the first magnet MS1. As described above, when the supporting layer SL is disposed between the first cantilever portion CAP1 and the lower panel member 400, there may be the following advantages: the low frequency band may be amplified to improve the output of the sound of the low frequency band and the damage and breakage of the vibration generator 510 may be prevented.

[0176] In some exemplary embodiments, Fig.24 As shown in FIG. 1 , the support layer SL_1 may be disposed between the second cantilever portion CAP2 and the panel lower member 400. In some exemplary embodiments, as shown in FIG. Fig.25 As shown in FIG, the supporting layer SL_2 may include a first supporting layer SLa disposed between the first cantilever portion CAP1 and the panel lower member 400 and a second supporting layer SLb disposed between the second cantilever portion CAP2 and the panel lower member 400 .

[0177] Fig.26 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A. Fig. 27 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A. Fig.26 and Fig. 27 An exemplary embodiment of Fig. 9 The difference of the exemplary embodiment is that the first magnet MS1 and the second magnet MS2 are aligned on one side of the vibration generator 510_1. Fig. 9 The description of the exemplary embodiment of the present invention is repeated, and the differences will be mainly described. The first magnet MS1, the second magnet MS2 and the surfaces 521, 522, 524, 526, 530, 532, 534, 536, 540 and 542 of the vibration generator 510_1 can be seen in Figure 8 and Fig. 9 .

[0178] Reference Fig.26 , the first surface 521 of the first magnet MS1 can be attached and fixed to the lower surface 440 of the panel lower member 400, the panel lower member 400 can be attached at the upper surface 442 via an adhesive member, and the second surface 522 of the first magnet MS1 opposite to the first surface 521 of the first magnet MS1 can be attached and fixed to the upper surface 540 of the vibration generator 510_1 via an adhesive member. One side surface 524 of the first magnet MS1 and one side surface 544_1 of the vibration generator 510_1 can be aligned in the third direction (Z-axis direction). However, some exemplary embodiments are not limited to this. In some exemplary embodiments, the first magnet MS1 can be positioned at an end in the direction opposite to the first direction (X-axis direction) to be attached and fixed to the upper surface 540 of the vibration generator 510_1, and one side surface 526 of the first magnet MS1 and one side surface 546_1 of the vibration generator 510_1 may not be aligned in the third direction (Z-axis direction).

[0179] The vibration generator 510_1 may include a fixing portion FP attached and fixed to the first magnet MS1 and a cantilever portion CAP disposed on the other side of the fixing portion FP. The cantilever portion CAP may be spaced apart from the panel lower member 400. The flexible circuit board 520 ( Fig.26 The electrode of the vibration generator 510_1 may be electrically connected to the flexible circuit board 520 (not shown) at one side surface 544_1 of the vibration generator 510_1. Fig.26 A pad at the pad portion of the other end (not shown).

[0180] The second magnet MS2 may be attached and fixed to the upper surface of the middle frame 600 via an adhesive member. The second magnet MS2 may overlap with the first magnet MS1 in a third direction (Z-axis direction) as a thickness direction. In addition, the second magnet MS2 may overlap with the fixed portion FP of the vibration generator 510_1 in the third direction (Z-axis direction), and the second magnet MS2 and the vibration generator 510_1 may be spaced apart from each other in the third direction (Z-axis direction).

[0181] Reference Fig. 27 In some exemplary embodiments, a support layer SL_3 may be disposed between the cantilever portion CAP of the vibration generator 510_1 and the panel lower member 400. Since the support layer SL_3 is similar to the support layer already described above, a redundant description will be omitted.

[0182] Fig.28 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A. Fig.29 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A. Fig.30 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A. Fig.31 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A.

[0183] Figure 28 to Figure 31 An exemplary embodiment of Fig. 9 The difference of the exemplary embodiment is that the vibration generators 510_2 and 510_3 do not include a cantilever portion. Fig. 9 The description of the exemplary embodiment of the present invention is repeated, and the differences will be mainly described. The first magnet MS1, the second magnet MS2, and the surfaces 521, 522, 524, 526, 530, 532, 534, 536, 540, and 542 of the vibration generators 510_2 and 510_3 can be seen in Figure 8 and Fig. 9 .

[0184] Reference Fig.28 , the vibration generator 510_2 may be disposed on the lower surface 440 of the panel lower member 400. For example, the upper surface 540 of the vibration generator 510_2 may be attached and fixed to the lower surface 440 of the panel lower member 400 via an adhesive member.

[0185] The first magnet MS1 may be disposed on the lower surface 542 of the vibration generator 510_2. For example, the upper surface 521 of the first magnet MS1 may be attached and fixed to a central portion of the lower surface 542 of the vibration generator 510_2 via an adhesive member.

[0186] The second magnet MS2 may be disposed on the upper surface of the middle frame 600. For example, the lower surface 530 of the second magnet MS2 may be attached and fixed to the upper surface of the middle frame 600 via an adhesive member.

[0187] The first and second magnets MS1 and MS2 may overlap each other in the third direction (Z-axis direction) and may be spaced apart from each other in the third direction (Z-axis direction). As described above, the first and second magnets MS1 and MS2 may improve vibration of the display panel 300 through a magnetic field.

[0188] Reference Fig.29 In some exemplary embodiments, the first magnet MS1 may be disposed on the lower surface 542 of the vibration generator 510_2. For example, the upper surface 521 of the first magnet MS1 may be attached and fixed to one side of the lower surface 542 of the vibration generator 510_2 via an adhesive member, and the second magnet MS2 may overlap with the first magnet MS1 in the third direction (Z-axis direction), and may be attached and fixed to the upper surface 602 of the middle frame 600. The first magnet MS1 and the second magnet MS2 may be spaced apart from each other in the third direction (Z-axis direction), and the side surface 544_2 of the vibration generator 510_2, the side surface 524 of the first magnet MS1, and the side surface 534 of the second magnet MS2 may be aligned in the third direction (Z-axis direction). As described above, the first magnet MS1 and the second magnet MS2 may improve the vibration of the display panel 300 through a magnetic field.

[0189] Reference Fig.30 In some exemplary embodiments, the vibration generator 510_3 may be disposed on the upper surface 602 of the middle frame 600. For example, the lower surface 542 of the vibration generator 510_3 may be attached and fixed to the upper surface 602 of the middle frame 600 via an adhesive member.

[0190] The first magnet MS1 may be disposed on the lower surface 440 of the panel lower member 400. For example, the upper surface 521 of the first magnet MS1 may be attached and fixed to the lower surface 440 of the panel lower member 400 via an adhesive member.

[0191] The second magnet MS2 may be disposed on the upper surface 540 of the vibration generator 510_3. For example, the lower surface 530 of the second magnet MS2 may be attached and fixed to the central portion of the upper surface 540 of the vibration generator 510_3 via an adhesive member.

[0192] The first magnet MS1 and the second magnet MS2 may overlap each other in the third direction (Z-axis direction), and may be spaced apart from each other in the third direction (Z-axis direction). The vibration of the vibration generator 510_3 may be concentrated on the second magnet MS2, and the first magnet MS1 may vibrate by the magnetic field between the second magnet MS2 and the first magnet MS1. For example, a repulsive force may be generated between the second magnet MS2 and the first magnet MS1, and the first magnet MS1 may generate sound by vibrating the display panel 300 by the vibration of the second magnet MS2.

[0193] In some exemplary embodiments, Fig.31 As shown in , the first magnet MS1 and the second magnet MS2 may be disposed near one side surface 544_3 of the vibration generator 510_3. For example, the first magnet MS1 and the second magnet MS2 may be disposed near one side surface 544_3 of the vibration generator 510_3 located in a direction opposite to the first direction (X-axis direction). In addition, the side surface 544_3 of the vibration generator 510_3, the side surface 524 of the first magnet MS1, and the side surface 534 of the second magnet MS2 may be aligned in a third direction (Z-axis direction). However, some exemplary embodiments are not limited thereto. In some exemplary embodiments, the first magnet MS1 and the second magnet MS2 may be disposed to be positioned near one side surface 544_3 or another side surface 546_3 of the vibration generator 510_3, and at least one side surface 546_3 of the vibration generator 510_3 may not be aligned with the side surfaces 524, 526, 534, and 536 of the first magnet MS1 and the second magnet MS2 in the third direction (Z-axis direction).

[0194] Fig.32 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A. Fig.33 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A. Fig.34 According to some exemplary embodiments, Fig.33 A view of the arrangement of the bonding portion between the display panel and the film layer in an embodiment. Fig.35 According to some exemplary embodiments, Fig.33 FIG. 1 is a view showing an arrangement of an adhesive portion between a display panel and a film layer in another exemplary embodiment.

[0195] Figure 32 to Figure 35 An exemplary embodiment of Fig. 9 The difference of the exemplary embodiment is that the support portion SP (SP1 and SP2) is disposed between the vibration generator 510_4 and the middle frame 600, and the film layer FL is disposed between the first magnet MS1 and the panel lower member 400. Fig. 9The description of the exemplary embodiments is repeated, and the differences will be mainly described.

[0196] Reference Fig.32 In some exemplary embodiments, the first supporting portion SP1 and the second supporting portion SP2 may be disposed on the middle frame 600. The second magnet MS2 may be disposed between the first supporting portion SP1 and the second supporting portion SP2, and the first magnet MS1 may be disposed on the lower surface 440 of the panel lower member 400.

[0197] The lower surfaces of the first support portion SP1 and the second support portion SP2 may be attached and fixed to the middle frame 600, and the upper surfaces of the first support portion SP1 and the second support portion SP2 may be attached and fixed to the vibration generator 510_4. For example, the first support portion SP1 and the second support portion SP2 may be spaced apart from each other in the first direction (X-axis direction), and may be attached and fixed to one side edge and the other side edge of the vibration generator 510_4. In some exemplary embodiments, one side surface of the first support portion SP1 may be aligned with one side surface of the vibration generator 510_4 in a third direction (Z-axis direction), and one side surface of the second support portion SP2 may be aligned with the other side surface of the vibration generator 510_4 in the third direction (Z-axis direction).

[0198] A height of each of the first supporting portion SP1 and the second supporting portion SP2 in the third direction (Z-axis direction) may be higher than a height of the second magnet MS2 in the third direction (Z-axis direction).

[0199] Each of the first supporting portion SP1 and the second supporting portion SP2 may be made of at least one of stainless steel, glass, metal, etc. However, the materials of the first supporting portion SP1 and the second supporting portion SP2 are not limited thereto.

[0200] The vibration generator 510_4 may include a first fixed part FP1 attached and fixed to the first magnet MS1, a second fixed part FP2 attached and fixed to the first supporting part SP1, a third fixed part FP3 attached and fixed to the second supporting part SP2, a first cantilever part CAP1 arranged between the first fixed part FP1 and the second fixed part FP2, and a second cantilever part CAP2 arranged between the first fixed part FP1 and the third fixed part FP3.

[0201] As described above, since the vibration generator 510_4 may include the second fixing portion FP2 attached and fixed to the first supporting portion SP1 and the third fixing portion FP3 attached and fixed to the second supporting portion SP2, there may be an advantage of being able to prevent vibration loss generated at one end and the other end of the vibration generator 510_4.

[0202] Reference Figure 33 to Figure 35 In some exemplary embodiments, a film layer FL may be further disposed between the panel lower member 400 and the first magnet MS1. For example, the panel lower member 400 and the film layer FL may be spaced apart from each other in the third direction (in the Z-axis direction) with an adhesive portion ADP therebetween. Fig.34 As shown in , the adhesive portion ADP may be located adjacent to each side of the film layer FL in an area where the film layer FL can overlap with the panel lower member 400, and may have a strip shape surrounding the edge 450 of the film layer FL. The adhesive portion ADP may include a sound hole SH through which sound generated due to vibration is output to the outside. Fig.35 In some exemplary embodiments, the adhesive portion ADP_1 may be positioned adjacent to each side of the film layer FL in an area where the film layer FL can overlap with the panel lower member 400, and may have a point shape surrounding an edge of the film layer FL. In addition, the sound hole SH_1 may be positioned between a plurality of points of the adhesive portion ADP_1.

[0203] The film layer FL may be used as a diaphragm that may vibrate and generate sound through the first magnet MS1 and the vibration generator 510_4 disposed under the first magnet MS1. For example, the film layer FL may have a thickness of about 10 μm to about 200 μm, and the film layer FL may be made of a polymer resin such as at least one of polyethylene, polyimide, polypropylene, and polystyrene, or may be made of paper including pulp or fiber. However, some exemplary embodiments are not limited thereto.

[0204] Fig.36 According to some exemplary embodiments Figure 6 An enlarged cross-sectional view of area A. Fig.37 is a perspective view of a vibration generator according to some exemplary embodiments. Fig.38 is a cross-sectional view of a vibration generator according to some exemplary embodiments. Fig.39 and Fig.40 is a view illustrating a method of vibrating a display panel according to some exemplary embodiments. Figures 36 to 40 An exemplary embodiment of Fig. 9 The difference between the exemplary embodiment of FIG. 5 is that the vibration generator 510_5 includes a vibration generating layer 510a and a magnetic layer 510b. Fig. 9 The description of the exemplary embodiments is repeated, and the differences will be mainly described.

[0205] Reference Figure 36 to Figure 38In some exemplary embodiments, the vibration generator 510_5 includes a vibration generating layer 510a and a magnetic layer 510b. The vibration generating layer 510a may be a piezoelectric element or a piezoelectric actuator capable of vibrating the display panel 300 using a piezoelectric material that contracts and expands according to an applied voltage.

[0206] In some exemplary embodiments, the magnetic layer 510b of the vibration generator 510_5 may be disposed on the lower surface 542 of the vibration generating layer 510a. For example, the magnetic layer 510b may be disposed on the entire lower surface 542 of the vibration generating layer 510a, but some exemplary embodiments are not limited thereto. The magnetic layer 510b may be disposed on a portion of the lower surface 542 of the vibration generating layer 510a. For example, the magnetic layer 510b may be disposed only on the lower surface 542 of the vibration generating layer 510a that overlaps with the magnet MS in the third direction (Z-axis direction).

[0207] The magnetic layer 510b may include a planar coil portion CP, and the planar coil portion CP includes a first planar coil portion CP1 and a second planar coil portion CP2. For example, the second planar coil portion CP2 may be disposed on the lower surface 542 of the vibration generating layer 510a, and the first planar coil portion CP1 may be disposed on the lower surface of the second planar coil portion CP2. The first planar coil portion CP1 may overlap with the second planar coil portion CP2 in a third direction (Z-axis direction).

[0208] The first planar coil portion CP1 and the second planar coil portion CP2 can be connected to each other at their center portions by a connection pattern CNP. For example, when the first planar coil portion CP1 and the second planar coil portion CP2 are arranged to overlap with the magnetic layer 510b in the third direction, a stronger magnetic field can be generated compared to when the first planar coil portion CP1 and the second planar coil portion CP2 are formed separately.

[0209] One end of the magnetic layer 510 b may be electrically connected to the first electrode 512_1 of the vibration generator 510_5 , and the other end of the magnetic layer 510 b may be electrically connected to the second electrode 513_1 of the vibration generator 510_5 .

[0210] Reference Fig.39, when the vibration generating layer 510a contracts to transmit a force to the display panel 300 in a direction opposite to the third direction (Z-axis direction), a current I(λ) may be applied to one end of the magnetic layer 510b connected to the first electrode 512_1 of the vibration generator 510_5, and thus the magnetic layer 510b may be switched to a first polarity state in which the upper portion of the magnetic layer 510b is an N pole and the lower portion thereof is an S pole. For example, an attractive force AF may be generated between the magnet MS and the magnetic layer 510b of the vibration generator 510_5 to increase the force transmitted to the display panel 300 in a direction opposite to the third direction (Z-axis direction).

[0211] Reference Fig.40 , when the vibration generating layer 510a expands to transmit force to the display panel 300 in the third direction (Z-axis direction), the current I(λ) may be applied to the other end of the magnetic layer 510b connected to the second electrode 513_1 of the vibration generator 510_5, and thus the magnetic layer 510b may be switched to a second polarity state in which the upper portion of the magnetic layer 510b is an S pole and the lower portion thereof is an N pole. In this case, a repulsive force RF may be generated between the magnet MS and the magnetic layer 510b of the vibration generator 510_5 to increase the force transmitted to the display panel 300 in the third direction (Z-axis direction).

[0212] As described above, in the vibration generator 510_5 , when the polarity of the magnetic layer 510 b is switched according to the contraction and expansion of the vibration generating layer 510 a , the vibration of the vibration generator 510_5 can be effectively transferred to the display panel 300 to improve the sound output of the display device 10 .

[0213] According to the display device of some exemplary embodiments, a vibration generator for vibrating the display panel to output sound can be provided on one surface of the display panel. Therefore, by using a vibration generator that is not exposed to the outside, it is possible to use the display panel as a vibration surface to output sound. For example, since the speaker for outputting voice of the display device can be omitted, the light-transmitting area of ​​the cover window can be expanded, so that the area where the display panel displays images can be expanded. For example, since the vibration can be transmitted to the display panel by a magnet having an area smaller than that of the vibration generator, the display panel can be effectively vibrated by reducing the vibration surface, and the low frequency band can be enhanced. In addition, the vibration transmitted from the vibration generator to the display panel can be increased by using the magnetic field of the magnet.

[0214] Although certain exemplary embodiments and implementations have been described herein, other embodiments and modifications will be apparent from this description. Therefore, the inventive concept is not limited to such embodiments, but is limited to the broader scope of the appended claims and various obvious modifications and equivalent arrangements as will be apparent to those of ordinary skill in the art.

Claims

1. A display device, comprising: A display panel including a pixel array layer; A lower panel component, arranged below the display panel; A first magnet is disposed below the panel lower member and has a first area; a vibration generator coupled to one surface of the first magnet and having a second area larger than the first area; as well as a second magnet overlapping the first magnet in a thickness direction and spaced apart from the first magnet in the thickness direction, Wherein, the vibration generator includes: a fixed portion overlapping with the first magnet in the thickness direction; and a cantilever portion not overlapping with the first magnet in the thickness direction.

2. The display device according to claim 1, wherein: A surface of the first magnet is coupled to a lower surface of the panel lower member. 3 . The display device according to claim 2 , further comprising a supporting layer disposed between the cantilever portion and the panel lower member.

4. The display device according to claim 1, further comprising: A middle frame, arranged below the vibration generator; as well as The first supporting part and the second supporting part are arranged on the middle frame.

5. The display device according to claim 4, wherein: The vibration generator comprises: a first fixing portion attached and fixed to the first magnet; a second fixing portion, attached and fixed to the first supporting portion; a third fixing portion, attached and fixed to the second supporting portion; a first cantilever portion disposed between the first fixing portion and the second fixing portion; and The second cantilever portion is located between the first fixing portion and the third fixing portion.

6. The display device according to claim 4, further comprising a film layer disposed between the panel lower member and the first magnet, wherein: The first magnet is coupled to a lower surface of the membrane layer.

7. The display device according to claim 6, further comprising an adhesive portion disposed between the film layer and the panel lower member, in, The adhesive portion is disposed to surround an edge of the film layer, and the adhesive portion includes a sound hole through which sound generated by vibration of the film layer is output to the outside.

8. A display device, comprising: A display panel including a pixel array layer; A lower panel component, arranged below the display panel; A first magnet is disposed below the panel lower member and has a first area; a vibration generator coupled to one surface of the first magnet and having a second area larger than the first area; as well as a second magnet overlapping the first magnet in a thickness direction and spaced apart from the first magnet in the thickness direction, wherein a first surface of the vibration generator contacts a surface of the first magnet, a second surface of the vibration generator is coupled to a first surface of the panel lower member, and another surface of the first magnet faces a surface of the second magnet.

9. A display device, comprising: A display panel including a pixel array layer; A lower panel component, arranged below the display panel; A first magnet is disposed below the panel lower member and has a first area; a vibration generator coupled to one surface of the first magnet and having a second area larger than the first area; a second magnet overlapping the first magnet in a thickness direction and spaced apart from the first magnet in the thickness direction; as well as The middle frame is arranged below the lower member of the panel, wherein a first surface of the vibration generator is coupled to the middle frame, a first surface of the first magnet is coupled to a second surface of the vibration generator, and the second magnet is coupled to a first surface of the panel lower member.

10. A display device, comprising: A display panel including a pixel array layer; A lower panel component, arranged below the display panel; a magnet disposed below the panel lower member and having a first area; as well as a vibration generator coupled to one surface of the magnet and having a second area larger than the first area, The vibration generator includes: a magnetic layer including a planar coil portion and having a polarity switchable with an applied current; and a vibration generating layer disposed between the magnetic layer and the magnet.

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