output device

Abstract

An output device according to an embodiment of the present technology includes one or more display panels, a support member, and an actuator. The one or more display panels are capable of displaying an image. The support member has a support portion for supporting the one or more display panels. The actuator is provided between the one or more display panels and the support portion and vibrates the one or more display panels. In the output device, the image is output by the one or more display panels. Furthermore, the actuator is provided between the display panel and the support portion of the support member, and the display panel vibrates. This makes it possible to output an image and sound with high quality.

Description

Technical Field

[0001] This technology relates to an output device capable of outputting images and sound. Background Technology

[0002] In the speaker system described in Patent Document 1, the actuator is attached to a frame member or connected to the front panel of the display panel. When the display panel and the actuator are actuated, images and sound are output (paragraphs

[0032] to

[0036] and

[0039] of Patent Document 1). Figure 1 wait).

[0003] In the sound output device described in Patent Document 2, the actuator is mounted on a frame-shaped (picture frame-shaped) border attached to the display panel. When the display panel and the actuator are actuated, images and sounds are output (paragraphs

[0014] ,

[0015] ,

[0022] of the specification of Patent Document 2). Figure 4 wait).

[0004] Reference List

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent No. 4655243

[0007] Patent Document 2: Japanese Patent No. 6237768 Summary of the Invention

[0008] Technical issues

[0009] There is a need for a technology that can output images and sound in high quality from an output device capable of outputting images and sound.

[0010] In view of the above, the purpose of this technology is to provide an output device capable of outputting images and sound in high quality.

[0011] Solution to the problem

[0012] To achieve the above objectives, the output device according to embodiments of the present technology includes: one or more display panels; a support member; and an actuator section.

[0013] One or more display panels capable of displaying images.

[0014] Supporting components include support portions for supporting each of one or more display panels.

[0015] An actuator section is disposed between one or more display panels and a support section, and causes each of the one or more display panels to vibrate.

[0016] In the output device, one or more display panels output images. Furthermore, an actuator is arranged between the display panel and the support portion of the support member, causing the display panel to vibrate. Therefore, high-quality images and sound can be output.

[0017] The support member can support one or more display panels via the actuator section.

[0018] Each of the one or more display panels may have a display surface for displaying images and a rear surface portion on a side opposite to the display surface. In this case, the actuator section may include one or more actuators prepared for each of the one or more display panels and connected to the rear surface portion of each of the one or more display panels. Furthermore, the support portion may fix and hold the one or more actuators.

[0019] The output device may also include a fixing mechanism for securing one or more actuators to the support portion.

[0020] The fixing mechanism may include fastening members. In this case, one or more actuators can be fixed to the support portion by using fastening members.

[0021] The fixing mechanism may include a magnet. In this case, one or more actuators can be fixed to the support portion by the magnetic force of the magnet.

[0022] One or more actuators may be electromagnetic actuators, piezoelectric actuators, or magnetostrictive actuators.

[0023] One or more actuators may be electromagnetic actuators that include a magnetic circuit. In this case, the fixing mechanism may include a magnet connected to the electromagnetic actuator and having a magnetic pole orientation set according to the configuration of the magnetic circuit.

[0024] Magnets connected to an electromagnetic actuator can form a magnetic circuit.

[0025] The output device may also include a connection mechanism for connecting one or more actuators to the display panel.

[0026] One or more actuators may be electromagnetic actuators and may include a coil and a winding tube, with the coil wound around the winding tube. In this case, the connection mechanism may include a connecting member for connecting the winding tube to the display panel.

[0027] One or more actuators may be configured to be attachable to or detachable from the display panel.

[0028] One or more actuators may include multiple actuators. In this case, the actuator section may include a frame member that holds multiple actuators in a predetermined positional relationship.

[0029] Each of the multiple actuators can be detachably screwed to a portion of the rear surface of the display panel. In this configuration, the frame members rotatably hold the multiple actuators.

[0030] One or more actuators can be connected to the location of nodes that generate natural vibrations in the display panel.

[0031] The output device may also include a reinforcing member connected to the rear surface portion of the display panel.

[0032] The output device may also include a detection section and a drive control section.

[0033] The detection section monitors the vibration status of the display panel.

[0034] The drive control unit generates a drive signal for driving each of one or more actuators based on the detected vibration state of the display panel.

[0035] One or more display panels may be multiple display panels having display surfaces for displaying images, and the display surfaces are arranged in a two-dimensional manner. In this case, structures for reducing friction may be formed between adjacent end surfaces of the multiple display panels.

[0036] One or more display panels may be multiple display panels having display surfaces for displaying images, and the display surfaces are arranged in a two-dimensional manner. In this case, a structure that reduces the contact area may be formed between the adjacent end surfaces of the multiple display panels.

[0037] The output device may further include multiple display units, each display unit including one or more display panels, actuators and support members. Attached Figure Description

[0038] Figure 1 This is a block diagram illustrating an example configuration of a display device according to an embodiment of the present technology.

[0039] Figure 2 This is a schematic diagram showing an example of the display unit configuration.

[0040] Figure 3 This is a diagram of the display unit viewed from the front.

[0041] Figure 4 It shows along Figure 3 A diagram showing the section cut by line AA in the diagram.

[0042] Figure 5 This is a schematic diagram showing the display panel and multiple actuators.

[0043] Figure 6 This is a cross-sectional view of a portion of a display unit equipped with an actuator.

[0044] Figure 7 This is a cross-sectional view showing another configuration example of the display unit.

[0045] Figure 8 This is a cross-sectional view showing an example configuration where the first magnet is connected to the electromagnetic actuator.

[0046] Figure 9 This is a schematic diagram showing an example configuration of the electromagnetic actuator and connecting components.

[0047] Figure 10 This is a schematic diagram showing an example of the configuration of frame components.

[0048] Figure 11 This is a schematic diagram illustrating an example of the vibration modes of natural vibrations.

[0049] Figure 12 This is a schematic diagram illustrating an example of the configuration of the reinforcing member.

[0050] Figure 13 This is a schematic diagram showing an example configuration of the drive control unit of a drive actuator.

[0051] Figure 14 This is a schematic diagram illustrating an example of attaching a sensor to a display panel.

[0052] Figure 15 This is a schematic diagram illustrating an example of a system configuration for performing image / sound matching control.

[0053] Figure 16 This is a block diagram showing an example configuration of an audio decoder.

[0054] Figure 17 This is a schematic diagram illustrating an example configuration of a friction-reducing structure and a contact area-reducing structure. Detailed Implementation

[0055] In the following description, embodiments according to the present technology will be described with reference to the accompanying drawings.

[0056] [Example of display device configuration]

[0057] Figure 1 This is a block diagram illustrating a configuration example of a display device 100 according to an embodiment of the present technology.

[0058] The display device 100 is a device capable of outputting images and sounds, and is used as an embodiment of an output device according to the present technology.

[0059] In this disclosure, images include both still images and moving images (videos).

[0060] The display device 100 includes a control unit 1 and a display unit 2.

[0061] The control unit 1 includes hardware required for configuring a computer, such as processors like CPUs, GPUs, and DSPs, memories like ROMs and RAMs, and storage devices like HDDs. For example, the CPU or the like loads a program according to the present technology, which is pre-stored in the ROM or the like, into the RAM and executes the program, thereby controlling various operations such as displaying images through the display device 100.

[0062] The configuration of control unit 1 is unrestricted, and any hardware and software can be used. It goes without saying that hardware such as FPGAs and ASICs can be used. Furthermore, the location of control unit 1 is unrestricted and can be designed arbitrarily. Control unit 1 can also be referred to as a system controller.

[0063] For example, the program can be installed on the display device 100 using various recording media. Alternatively, the program can be installed via the Internet or the like. There are no restrictions on the type of recording medium on which the program is recorded, and any computer-readable recording medium can be used. For example, any computer-readable non-transitory recording medium can be used.

[0064] [Display Department]

[0065] Figure 2 This is a schematic diagram showing an example of the configuration of display unit 2.

[0066] In this embodiment, the display unit 2 includes a plurality of display units 3.

[0067] Each of the plurality of display units 3 has an image display surface 3a capable of displaying images. For example... Figure 2 As shown, multiple display units 3 are installed such that the image display surface 3a is arranged in a two-dimensional grid pattern. Therefore, images can be displayed on a large screen.

[0068] The control unit 1 controls the operation of each display unit 3 so that a desired image, such as a large image, is displayed on the image display surface 3a of the multiple display units 3.

[0069] Figure 2 The display unit 2 shown serves as a display system. Any number of display units 3, formed as units, can be arranged in the display unit 2 in any configuration, and the display unit 2 can serve as a scalable display system.

[0070] Note that display unit 3 can also be called a cabinet or display module.

[0071] In this disclosure, terms such as "unit" and "module" both refer to a component, and there is no significant distinction between them. Primarily, attachable / detachable and interchangeable parts configured to perform predetermined functions are represented as units or modules.

[0072] like Figure 2 As shown, in the following description, when viewing the display unit 2 from the front, the left-right direction and the up-down direction are defined as the X direction and the Y direction, respectively. Furthermore, in the following description, the depth direction (the direction perpendicular to the image display surface 3a) is defined as the Z direction.

[0073] Furthermore, the direction of the arrow in the X direction is described as right, and the opposite side is described as left. Similarly, the direction of the arrow in the Y direction is described as upward, and the opposite side is described as downward. Finally, the direction of the arrow in the Z direction is described as forward, and the opposite side is described as backward.

[0074] It goes without saying that the orientation of the display device 100 and the like is not limited when applying this technology.

[0075] exist Figure 2 In the example shown, a total of 42 display units 3 are arranged, 7 in the X direction (left-right direction) and 6 in the Y direction (up-down direction). The number of multiple display units 3 is unlimited.

[0076] Furthermore, this technology is applicable even when there is only one display unit 3. That is, this technology can be applied to situations where one or more display units 3 are arranged.

[0077] [Display Unit]

[0078] Figure 3 and Figure 4 These are schematic diagrams illustrating a configuration example of display unit 3.

[0079] Figure 3 This is a diagram of display unit 3 when viewed from the front along the Z direction.

[0080] Figure 4 It shows along Figure 3 A diagram showing a portion of the cross section taken by line AA in the diagram.

[0081] In this embodiment, the display unit 3 includes a plurality of display panels 5, a unit substrate 6, and an actuator section 7.

[0082] Display panel 5 can display images.

[0083] For example, display panel 5 is implemented by mounting light source elements on display substrate (not shown). For example, an LED panel on which tiny LEDs (light-emitting diodes) are mounted as light source elements is used as display panel 5.

[0084] In addition, display panels with arbitrary configurations (such as organic EL panels and LD panels) can be used as display panels 5.

[0085] It should be noted that the shape, size, etc., of the display panel 5 are mainly defined by the shape and size of the display substrate. Furthermore, for example, setting the display panel 5 at a predetermined position corresponds to setting the display substrate included in the display panel 5 at a predetermined position.

[0086] like Figure 4 As shown, in this embodiment, the display panel 5 has a flat panel shape and functions as a so-called flat panel display. Furthermore, the display panel 5 is rectangular when viewed from the front.

[0087] The display panel 5 has a display surface 5a for displaying images and a rear surface portion 5b opposite to the display surface. Multiple display panels 5 are arranged such that the display surfaces 5a are arranged in a two-dimensional grid pattern. The multiple two-dimensionally arranged display surfaces 5a form an image display surface 3a of a display unit 3.

[0088] The specific configuration of the display panel 5 is not limited and can be designed arbitrarily. For example, reinforcing members can be provided on the rear side of the display substrate. In this case, the display substrate and the reinforcing members form the rear surface portion 5b of the display panel 5.

[0089] It should be noted that this technology is applicable even when the number of display panels 5 included in the display unit 3 is one. That is, this technology can be applied to situations where one or more display panels 5 are arranged.

[0090] The unit substrate 6 includes a support portion 8 for supporting each of the plurality of display panels 5.

[0091] The support portion 8 is prepared for each of the plurality of display panels 5 and is positioned at a predetermined location relative to the rear surface portion 5b.

[0092] In this embodiment, the support portion 8 is disposed at the four corners of the rear surface portion 5b of the display panel 5.

[0093] The unit substrate 6 corresponds to an embodiment of the support member according to the present technology. Note that the unit substrate 6 may be referred to as a display case substrate or a display case member.

[0094] The unit substrate 6 is formed of a metal such as aluminum. Furthermore, the material of the unit substrate 6 is not limited and any material can be used.

[0095] The actuator 7 is disposed between the plurality of display panels 5 and the support portion 8 and causes each of the plurality of display panels 5 to vibrate.

[0096] like Figure 3 and Figure 4 As shown, an actuator section 7 is prepared for each of the plurality of display panels 5, and the actuator section 7 includes one or more actuators 9 connected to the rear surface portion 5b of the display panel 5.

[0097] In this embodiment, four actuators 9 are arranged between the rear surface portion 5b and the support portions 8 located at the four corners of the rear surface portion 5b. That is, the four actuators 9 are connected at the four corners of the rear surface portion 5b. Therefore, the actuator section 7 includes actuators 9 in number four times the number of display panels.

[0098] The number of actuators 9 prepared for the corresponding display panel 5 and connected to the rear surface portion 5b is unlimited, and any number of actuators 9, equal to or greater than 1, can be connected. Furthermore, the connection position of the actuators 9 is also unrestricted and can be designed arbitrarily.

[0099] For example, each actuator 9 may be an electromagnetic (electric) actuator comprising a permanent magnet and a voice coil that generates vibrations through the action of a magnetic circuit. This technology is not limited to this, and any actuator may be used, such as a piezoelectric actuator using a piezoelectric element or a magnetostrictive actuator using a magnetostrictive vibration element.

[0100] like Figure 4 As shown, the unit substrate 6 supports each of the plurality of display panels 5 via the actuator section 7. In addition, the support section 8 fixes and holds the corresponding actuator 9.

[0101] Therefore, it can also be said that the support portion 8 is a component that supports the display panel 5 via the actuator 9. Furthermore, it can also be said that the support portion 8 is a component that fixes and maintains the actuator 9 connected to the display panel 5.

[0102] The specific configuration of the support part 8 is not limited, and it can adopt any configuration that can support the display panel 5 via the actuator 9. In other words, any configuration of the actuator 9 can be fixed and maintained.

[0103] The actuator 9 can be fixed to the support portion 8 using a fixing mechanism.

[0104] The fixing mechanism has an arbitrary structure for fixing multiple actuators 9 to the support portion 8. For example, it can be configured to achieve any fixing method, such as fastening using fastening members such as screws, magnetic attraction, and mechanical connection such as engagement using snap-fit ​​(engaging claws).

[0105] Furthermore, the connecting mechanism can be used to connect one or more actuators 9 to the display panel 5. The connecting mechanism has any configuration for connecting the actuators 9 to the display panel 5.

[0106] The following will describe specific examples of fixing mechanisms and connecting mechanisms.

[0107] like Figure 4 As shown, the movable portion (movable end) 9a of the actuator 9 is connected to the display panel 5. Furthermore, the immovable portion (fixed end) 9b of the actuator 9 is fixed to the support portion 8 of the unit substrate 6. The movable end 9a of the actuator 9 displaces (vibrates) relative to the fixed end 9b, thereby enabling the display panel 5 to vibrate.

[0108] As described above, by arranging the actuator 9 between the display panel 5 and the unit substrate 6, a vibration mechanism for vibrating the display panel 5 is formed. Then, a sound generation mechanism is formed that treats the display panel 5 itself as a diaphragm.

[0109] In this embodiment, four actuators 9 uniformly vibrate the flat-panel display panel 5 along the Z-direction. Therefore, the display surface 5a can be used as an illumination surface to project a near-plane wavefront onto the viewer. Thus, the display surface 5a can be used as a flat speaker.

[0110] In the case where a wavefront that is close to a plane wave can be formed by displaying surface 5a, a directionality that is different from that of a cone-shaped diaphragm that forms a wavefront that is close to a spherical wave is provided.

[0111] In an ideal plane wave, the directionality is sharp and the sound is emitted only in the forward direction perpendicular to the irradiating surface. Furthermore, when considering a point far from the speaker, a plane wave has less sound pressure attenuation depending on the distance from the speaker compared to a spherical wave, which is irradiated spherically and whose diffusion depends on the distance (attenuation is solely due to the viscoelasticity of the air).

[0112] For this reason, for example, when it is desired that the sound be heard only within a specific range or that the sound be heard by a distant listener, a smooth speaker is very effective.

[0113] It goes without saying that the application of this technology is not limited to the case of irradiating the wavefront of a near-plane wave.

[0114] This section describes a specific configuration example for display unit 3.

[0115] Figure 5 This is a schematic diagram showing the display panel 5 and multiple actuators 9.

[0116] Figure 6 This is a cross-sectional view of a portion of the display unit 3 on which the actuator 9 is installed.

[0117] like Figure 5 As shown, the display panel 5 has a display surface 5a and a rear surface portion 5b. Furthermore, the display panel 5 has four end surfaces 5c, namely an upper surface, a lower surface, a right surface, and a left surface.

[0118] Although not shown, multiple LEDs are arranged in a two-dimensional grid pattern on the display surface 5a. For example, RGB LED groups are arranged in a two-dimensional grid, with each LED group representing a pixel. It goes without saying that this technology is not limited to this configuration.

[0119] like Figure 5 As shown in part B, 10 actuators 9 are connected to the rear surface part 5b. Figure 5 In the example shown in part B, actuators 9 are connected to the four corners of the rear surface portion 5b. Furthermore, two actuators 9 are connected near the center of each of the two long sides of the rear surface portion 5b. Additionally, two actuators 9 are connected along the longitudinal direction at the center position of the rear surface portion 5b in the lateral direction.

[0120] The number and position of actuators 9 can be designed arbitrarily.

[0121] like Figure 6 As shown, in this embodiment, an electromagnetic actuator 9 is used.

[0122] The actuator 9 includes a fixed unit 12 and a movable unit 13.

[0123] The fixing unit 12 includes, for example, a magnetic circuit and a permanent magnet, the magnetic circuit comprising components formed of magnetic materials such as yokes, pole pieces, and plates. Furthermore, a magnetic gap 14 is formed in the fixing unit 12.

[0124] The active unit 13 includes a voice coil 15 and a drive winding tube 16 around which the voice coil 15 is wound.

[0125] The movable unit 13 is arranged relative to the fixed unit 12 such that the voice coil 15 is inserted into the magnetic gap 14 of the fixed unit 12.

[0126] Furthermore, the movable unit 13 is connected to the fixed unit 12 via a damper 17. The damper 17 connects the movable unit 13 to the fixed unit 12, allowing the movable unit 13 to be displaced. That is, the damper 17 connects the movable unit 13 to the fixed unit 12 without interrupting the vibration of the movable unit 13.

[0127] Furthermore, in this embodiment, each of the fixed unit 12 and the movable unit 13 is formed as a hollow cylinder. A screw hole 18 is then formed in the central hollow portion.

[0128] The end of the drive winding tube 16 is connected to the rear surface portion 5b of the display panel 5 via a connecting mechanism.

[0129] In this embodiment, a connecting member 19 is used as the connecting mechanism to connect the drive winding tube 16 to the display panel 5. The connecting member 19 serves as a member for increasing the contact area between the rear surface portion 5b of the display panel 5 and the drive winding tube 16. The connecting member 19 may also be referred to as a coupler.

[0130] In this embodiment, a flat plate-shaped member with a centrally formed through hole 19a is used as the connecting member 19. The end of the drive winding tube 16 is inserted into the central through hole 19a, and the connecting member 19 is connected to the outer periphery of the drive winding tube 16. When the connecting member 19 is attached to the rear surface portion 5b by adhesion or the like, the movable unit 13 is attached to the rear surface portion 5b.

[0131] The configuration of the connecting member 19 is unrestricted and can be arbitrary. For example, a stepped member having a flange formed at the tip of a hollow cylindrical shape can be formed as the connecting member 19. The inner surface of the cylindrical shape is connected to the outer periphery of the drive winding tube 16. Then, the upper surface portion of the flange is connected to the rear surface portion 5b of the display panel 5.

[0132] Alternatively, a flat plate-shaped component is used as the connecting component 19. The drive winding tube 16 is connected to the lower surface of the connecting component 19, and the rear surface portion 5b of the display panel 5 is connected to the upper surface of the connecting component 19.

[0133] Alternatively, a connecting member 19 having a circular or annular shape can be assembled and connected to the inner circumference of the drive winding tube 16. The rear surface portion 5b of the display panel 5 is connected to the upper surface of the connecting member 19. Furthermore, any configuration can be adopted.

[0134] The connecting member 19 is formed of a metallic material such as aluminum. Alternatively, any material can be used.

[0135] exist Figure 6 In the example shown, the voice coil 15 and the drive winding tube 16 correspond to embodiments of the coil and winding tube according to the present technology, respectively.

[0136] like Figure 6As shown, a support embedding portion 21 is formed in the unit substrate 6. A fixing unit 12 for the actuator 9 is disposed in the support embedding portion 21. A through hole 22 is formed in the center of the support embedding portion 21. The fixing unit 12 is disposed in the support embedding portion 21 such that a screw hole 18 formed in the center portion of the actuator 9 is positioned in the through hole 22.

[0137] Screw 23 engages with screw hole 18 formed in actuator 9 so as to pass through through hole 22 formed in support embedding portion 21. As a result, actuator 9 is fixed to support embedding portion 21 of unit substrate 6. That is, in this embodiment, multiple actuators 9 are fixed to unit substrate 6 by fastening with fastening members.

[0138] exist Figure 6 In the example shown, the support embedding portion 21 corresponds to Figure 3 The support portion 8 is shown. In addition, the screw hole 18 formed in the central portion of the actuator 9, the through hole 22 formed in the support embedding portion 21, and the screw 23 realize the fixing mechanism.

[0139] Note that the support portion 8 and the support mechanism can be considered together as components used to support the display panel 5 via the actuator 9.

[0140] When viewed from the Z-direction, the external shape and size of the fixing unit 12 and the external shape and size of the support embedding portion 21 can be substantially the same. The fixing unit 12 can then be assembled and attached to the support embedding portion 21 along the Z-direction. Therefore, the fixing unit 12 can be smoothly fixed to the unit substrate 6.

[0141] In this configuration, when viewed from the Z-direction, the external shapes of the fixing unit 12 and the support insert 21 are formed into shapes such as hexagons, for example, a nut. Therefore, when the fixing unit 12 is secured with the screw 23, rotation of the fixing unit 12 can be adequately prevented. This improves the operability of installing the fixing unit 12.

[0142] By driving the actuator 9, the voice coil 15 and the drive winding tube 16 can be vibrated in the Z direction through electromagnetic induction. Therefore, the vibration in the Z direction can be transmitted to the display panel 5 via the connecting member 19.

[0143] Ten actuators 9 are driven synchronously. That is, the ten actuators 9 are driven so that the same vibration is transmitted to the display panel 5 along the Z direction. Therefore, uniform vibration of the display panel 5 is achieved, and it exhibits high acoustic characteristics.

[0144] Figure 7 This is a cross-sectional view showing another configuration example of display unit 3.

[0145] exist Figure 7 In the display unit 3 shown, the LED panel with LED 25 installed is used as the display panel 5.

[0146] Actuator 9 is connected to the rear surface portion 5b of display panel 5. The configuration of actuator 9 can be arbitrarily designed.

[0147] The first magnet 26 is attached to the outer periphery of the actuator 9 on its bottom side. Any method, such as adhesion, can be used as the attachment method.

[0148] A support embedding portion 21 is formed in the unit substrate 6. Furthermore, a second magnet 27 is mounted in the support embedding portion 21. The second magnet 27 is fixed to the support embedding portion 21 by any method such as adhesion.

[0149] The orientation of each magnetic pole of the first magnet 26 and the second magnet 27 is set such that they attract each other by magnetic force. When the first magnet 26 and the second magnet 27 attract each other, the actuator 9 is fixed to the support embedding portion 21 of the unit substrate 6. That is, in this embodiment, a plurality of actuators 9 are fixed to the unit substrate 6 by the magnetic force of the magnets.

[0150] exist Figure 7 In the example shown, the support embedding portion 21 corresponds to the support portion 8. Furthermore, the first magnet 26 and the second magnet 27 constitute the fixing mechanism.

[0151] Note that instead of the first magnet 26, a magnetic material such as iron can be attached to the outer periphery of the actuator 9 on the bottom side. The actuator 9 can then be fixed to the unit substrate 6 by the attraction between the magnetic material and the second magnet 27.

[0152] Alternatively, instead of the second magnet 27, a magnetic material such as iron can be mounted in the support embedding portion 21. Then, the actuator 9 can be fixed to the unit substrate 6 by the attraction between the first magnet 26 and the magnetic material.

[0153] Alternatively, the entire unit substrate 6 can be formed of a magnetic material such as iron, and the first magnet 26 can be attracted to the unit substrate 6 itself to fix the actuator 9 to the unit substrate 6. In this case, a flat surface for fixing the first magnet 26, a protrusion for alignment, or an embedded portion can be formed on a part of the unit substrate 6. The flat surface, protrusion, etc., serve as a support portion 8.

[0154] Figure 8 This is a cross-sectional view showing an example configuration where the first magnet 26 is connected to the electromagnetic actuator 9.

[0155] The electromagnetic actuator 9 includes a yoke 29, pole pieces 30 and a magnet 31, and forms a magnetic circuit to cause the movable unit 13 to vibrate.

[0156] exist Figure 8 In the example shown, the first magnet 26 has the orientation of the magnetic pole group configured according to the magnetic circuit. Specifically, the orientation of the magnetic poles of the first magnet 26 is set to repel the magnet 31, so that the magnetic force of the magnetic circuit is not reduced. Therefore, the installation of the first magnet 26 can be prevented from adversely affecting the excitation force generated by the actuator 9.

[0157] Note that because the first magnet 26 is arranged in the direction of the repulsive magnet 31, the first magnet 26 is firmly fixed to the outer periphery of the yoke 29 on the bottom side by adhesion or the like.

[0158] It goes without saying that when using the electromagnetic actuator 9, it is also effective to fix the actuator 9 to the unit substrate 6 by a method different from fixing it by magnetic force. Conversely, by properly setting the orientation of the magnetic poles of the first magnet 26, it is possible to fix it to the unit substrate 6 by magnetic force even when using the electromagnetic actuator 9.

[0159] The magnetic circuit of the electromagnetic actuator 9 can be formed by the first magnet 26. That is, the first magnet 26 can be used as a component for forming the magnetic circuit.

[0160] In this configuration, the first magnet 26 also functions as part of the actuator 9. Conversely, it can also be said that the components forming the actuator 9 enable the actuator 9 to be fixed to the unit substrate 6. Thus, for example, the number of components and the cost of components can be reduced, and the device can be miniaturized.

[0161] It goes without saying that even when using another type of actuator 9, such as a piezoelectric actuator or a magnetostrictive actuator, the actuator 9 can be fixed to the unit substrate 6 using the components that form the actuator 9.

[0162] For example, a component made of magnetic material is used at the bottom of the actuator 9 and is attracted to the second magnet 26. Such a configuration can be adopted.

[0163] Figure 9 This is a schematic diagram showing an example configuration of the electromagnetic actuator 9 and the connecting member 19.

[0164] exist Figure 9 In the electromagnetic actuator 9 shown in parts A and B, the yoke 29, pole piece 30, magnet 31, and frame 32 constitute the fixing unit 12. The bottom side of the yoke 29 is fixed to the unit substrate 6.

[0165] The active unit 13 includes a voice coil 15 and a drive winding tube 16.

[0166] Two dampers 17 are disposed between the frame 32 of the fixed unit 12 and the drive winding tube 16. The dampers 17 connect the movable unit 13 to the fixed unit 12, enabling the movable unit 13 to vibrate.

[0167] In addition, such as Figure 9 As shown in parts A and B, the drive winding tube 16 is connected to the rear surface part 5b of the display panel 5 via the connecting member 19.

[0168] In the example shown in part A of Figure 19, the connecting member 19 includes a hollow cylindrical portion 34 and a flange portion 35 connected to the end of the cylindrical portion 34, and is formed as a stepped member. The inner surface of the cylindrical portion 34 is connected to the outer periphery of the drive winding tube 16. Then, the upper surface of the flange portion 35 is connected to the rear surface portion 5b of the display panel 5.

[0169] exist Figure 9 In the example shown in part A, the drive winding tube 16 is fixed to the rear surface portion 5b of the display panel 5 via the connecting member 19 by adhesion or the like. As a result, the transmission loss of vibration (driving force) can be sufficiently suppressed.

[0170] The connecting member 19 can also be described as a transmission member that transmits the vibration generated by the actuator 9 to the display panel 5.

[0171] In the example shown in part B of Figure 19, the connecting member 19 includes a female screwmember 36 and a male screw member 37.

[0172] The recessed screw member 36 is a flat plate-shaped component with a screw hole 36a formed in the center, which is connected to the rear surface portion 5b of the display panel 5.

[0173] The convex screw member 37 is a member with a flat plate shape, wherein a through hole 37a is formed at the center, and the end of the drive winding tube 16 is connected to the through hole 37a. In addition, a screw 37b is formed on the outer periphery of the convex screw member 37 to engage with the screw hole 36a of the concave screw member 36.

[0174] exist Figure 9 In the example shown in part B, the actuator 9 is formed as a module and connected to the outer screw member 37 (which can be considered as a module including the outer screw member 37). The actuator 9 is rotated in a predetermined direction (e.g., clockwise) so that the screw 37b of the outer screw member 37 engages in the screw hole 36a of the inner screw member 36. As a result, the actuator 9 can be connected to the rear surface portion 5b of the display panel 5.

[0175] The actuator 9 is caused to rotate in the opposite direction (e.g., counterclockwise) to release the engagement of the screw 37b of the outer screw member 37 into the screw hole 36a of the inner screw member 36. Thus, the actuator 9 can be removed from the rear surface portion 5b of the display panel 5.

[0176] As described above, the actuator 9 can be modularized and can be formed to be attached to / detached from the rear surface portion 5b of the display panel 5. Therefore, for example, even if the actuator 9 fails, it is not necessarily necessary to replace the entire display unit 3, including the relatively expensive display panel 5.

[0177] That is, only the faulty actuator 9 can be removed and replaced, resulting in a significant cost reduction. Note that the actuator 9 is attached / removed after the connection between the actuator 9 and the unit substrate 6 is released. For example, in... Figure 6 The shown fit with the connecting member or as Figure 7 After the magnetic attraction is released, the actuator 9 is attached / removed.

[0178] Note that when the actuator 9 is configured to be attachable / removable, it is desirable to minimize backlash and play in order to prevent loss of drive force transmission and generation of abnormal noise.

[0179] exist Figure 9 In the example shown in part B, each of the plurality of actuators 9 is attachably / removably screwed to the rear surface portion 5b of the display panel 5. That is, the actuators 9 are fastened to the display panel 5 by screws.

[0180] It goes without saying that there are no restrictions on the configuration and method used to make the actuator 9 attachable to / detachable from the display panel 5. Any configuration can be used, such as any locking mechanism, fastening by fastening members, and attraction by magnets.

[0181] Furthermore, the modularity of the actuator 9, and its ability to be attached to / removed from the display panel 5, is not limited to the use of an electromagnetic actuator 9. This can also be achieved with other types of actuators 9, such as piezoelectric actuators and magnetostrictive actuators.

[0182] For example, a piezoelectric element is used as actuator 9, which is connected to a structure formed as such by adhesion or the like. Figure 9 Part B shows a connecting member 19 (e.g., external screw member 37) that can be attached / removed. Furthermore, the piezoelectric element is directly connected to the first magnet 26 (or magnetic material) for use via adhesion or the like. Figure 8 The magnetic attraction shown is illustrated.

[0183] This allows for the formation of a module consisting of a connecting member 19 (e.g., a convex screw member 37), a piezoelectric element, and a first magnet 26 (or magnetic material). Furthermore, a configuration that allows attachment / removal from the display panel 5 can be achieved. Moreover, by employing this configuration using piezoelectric elements, the weight and thickness of the actuator 9 can be reduced. Therefore, the weight and size of the display unit 3 can be reduced.

[0184] [Frame Components]

[0185] Figure 10 This is a schematic diagram showing an example of the configuration of frame components.

[0186] When multiple actuators 9 are connected to each display panel 5, a frame member 39 can be used. The frame member 39 holds the multiple actuators 9 in a predetermined positional relationship. The frame member 39 may also be referred to as a sub-frame in the display unit 3.

[0187] exist Figure 10 In the example shown, frame member 39 includes a hollow outer frame portion 40 and a central rib portion 41.

[0188] Viewed from the Z direction, the outer frame portion 40 has an octagonal shape, and retaining portions 42 for holding the actuator 9 are formed on each of four alternately arranged sides of the eight sides. A central flange portion 41 is connected to the inside of the outer frame portion 40, thereby connecting the four retaining portions 42 to each other.

[0189] exist Figure 10 In the example shown, four actuators 9 are connected to each display panel 5 at positions symmetrical about the center. By using the frame member 39, the actuator section 7, which includes the four actuators 9, can be modularized, exhibiting high operability in the connection of the actuator section 7, etc.

[0190] By modularizing the actuator section 7 using frame member 39, the actuator 9 can be positioned not only in the X and Y directions, but also in the vibration direction (Z direction).

[0191] When using multiple actuators 9, the positioning of each actuator 9 in the vibration direction is important in order to achieve uniform vibration parallel to the display surface 5a of the display panel 5. For example, if the position of the vibration midpoint (vibration center) of the multiple actuators 9 changes, it becomes difficult to vibrate the display panel 5 uniformly. As a result, the acoustic characteristics deteriorate.

[0192] By using the frame member 39, the position of the midpoint of the vibration of each actuator 9 can be easily adjusted. Furthermore, for example, each actuator 9 can be easily positioned within the frame member 39 such that the plane connecting the ends of the actuators 9 on the display panel 5 side is located at the midpoint of the vibration of each actuator 9. Therefore, the display panel 5 can vibrate uniformly and the acoustic characteristics can be improved.

[0193] Furthermore, in order to vibrate the display panel 5 uniformly, it is also important to match the individual vibration characteristics of the actuator 9. When the frame member 39 is used in a modular manner, by appropriately selecting and setting the actuator 9 to match each individual, a high-quality actuator section 7 that can vibrate the display panel 5 uniformly and smoothly can be easily achieved.

[0194] The actuator section 7, which uses the modular frame component 39, can also be configured to be attachable to / detachable from the display panel 5.

[0195] For example, by making each actuator 9 held by the frame member 39 attachable / detachable relative to / from the display panel 5, the modular actuator section 7 can be configured to be attachable / detachable.

[0196] For example, such as Figure 9 As shown in section B, a configuration is employed in which the actuator 9 is attached / removably screwed to the display panel 5. In this case, the frame member 39 rotatably holds the actuator 9.

[0197] That is, while fixing the position in the vibration direction, the rotational direction around the vibration direction (Z direction) is not restricted. Therefore, by rotating each actuator 9, the modular actuator section 7 can be easily installed and removed. The configuration for rotatably holding the actuator 9 is unrestricted and can be arbitrary.

[0198] Furthermore, the structure of the frame member 39 is unrestricted and can be designed arbitrarily according to the number of actuators 9, their installation positions, and whether the actuators 9 are formed in a detachable manner. Needless to say, the actuators 9 do not necessarily need to be screwed to the display panel 5, and any configuration for holding each actuator 9 by the frame member 39 can be adopted according to any attachable / detachable configuration.

[0199] The material of frame member 39 is not limited and any material can be used, such as metals, such as aluminum.

[0200] [Attachment position of actuator 9]

[0201] The actuator 9 is attached to the point where the display panel 5 is driven by vibration (hereinafter referred to as the drive point). Conversely, the location where the display panel 5 is desired to be driven can be set as the drive point, and the actuator 9 can be connected at the location of the set drive point.

[0202] For example, a driving point can be set at the center of the rear surface portion 5b of the display panel 5. Furthermore, by setting multiple driving points, the driving force used to vibrate the display panel 5 can be increased.

[0203] Here, the setting of the drive point considering the separate vibration of the display panel 5 will be described.

[0204] Separate vibration means that different vibration components are generated in multiple areas of the display panel 5 due to natural vibration, and the display panel 5 behaves differently from uniform vibration.

[0205] When separation vibration occurs in the display panel 5, it typically creates a peak or dip in the sound pressure level within the resonant band and also affects directivity. Therefore, suppressing separation vibration is important to improve the performance of the smooth speaker.

[0206] Figure 11 This is a schematic diagram illustrating an example of the vibration modes of natural vibrations.

[0207] Figure 11 Ten vibrational modes are shown, including the fundamental mode of a square plate with free ends. The lower values ​​in the figure are frequencies relative to the fundamental mode frequency.

[0208] exist Figure 11 In the natural vibration mode shown, the lines inside the square are the nodes of the natural vibration. Then, the central part of the region separated by these lines is the antinode of the natural vibration.

[0209] For example, when the display panel 5 is vibrated uniformly, the following can occur depending on the vibration frequency: Figure 11 The natural vibrations in the vibration modes shown.

[0210] In this respect, the drive point is set at the location of the node of natural vibration occurring in the display panel 5, and the actuator 9 is attached. For example, setting the drive point at the location of the node of natural vibration to be suppressed is advantageous in suppressing isolated vibrations and achieving uniform vibration of the display panel 5. Furthermore, setting the drive point to be symmetrical with respect to the center of the display panel 5 is also advantageous in suppressing isolated vibrations.

[0211] Note that in order to realize the image display function of the display panel 5, connectors, IC (integrated circuit) chips, etc. are provided on the rear surface portion 5b of the display panel 5. That is, devices other than the actuator 9 can be installed on the rear surface portion 5b of the display panel 5.

[0212] For example, in designs that include such other devices, the actuator 9 is attached as many times as possible to the locations of the nodes where the separation vibration occurs. As a result, the separation vibration can be suppressed.

[0213] Needless to say, the number and location of the drive points (i.e., the number and attachment locations of the actuators 9) are unrestricted and can be set arbitrarily.

[0214] [Reinforcing Components]

[0215] To suppress the natural vibration (separation vibration) of the display panel 5, a reinforcing member can be attached to the rear surface portion 5b of the display panel 5. By increasing the strength of the display panel 5 using the reinforcing member, separation vibration can be suppressed. Furthermore, the resonant frequency at which natural vibration occurs can be increased.

[0216] Furthermore, using a strong aluminum substrate as the material for the display panel 5 (display substrate) itself is also effective. Additionally, the wiring configuration of the display substrate is designed so that the copper foil pattern forms at locations of stress concentration during natural vibration. For example, the strength of stress concentration locations is enhanced by widening the width of the copper foil pattern.

[0217] Therefore, it can disperse stress and suppress separation vibrations. For example, by widening the copper foil pattern, areas of stress concentration can also be strengthened.

[0218] Figure 12 This is a schematic diagram illustrating an example of the configuration of the reinforcing member. Figure 12 This is a diagram of the reinforcing member when viewed from the direction of connection with the rear surface portion 5b of the display panel 5.

[0219] The reinforcing member 44 includes a first reinforcing part 45 and a second reinforcing part 46.

[0220] The first reinforcing portion 45 includes a retaining hole 45a and is connected to the rear surface portion 5b of the display panel 5 at the drive point DP. The actuator 9, which is to be attached at the drive point DP, is inserted into the retaining hole 45a. That is, the first reinforcing portion 45 is configured to retain the periphery of the actuator 9.

[0221] In this way, by strengthening the vicinity of the driving point DP located on the rear surface portion 5b of the display panel 5, the resonant frequency can be increased.

[0222] The second reinforcing portion 46 is configured to connect with the first reinforcing portions 45 while being spaced apart from the rear surface portion 5b of the display panel 5. That is, a gap is formed between the second reinforcing portion 46 and the rear surface portion 5b. The second reinforcing portion 46 serves as a beam-like reinforcing structure.

[0223] In this way, the resonant frequency can be increased by forming a beam-like reinforcing structure connecting multiple drive points DP.

[0224] Furthermore, the reinforcing structure is formed while spaced apart from the rear surface portion 5b. That is, a space (gap) is formed between the display panel 5 and the reinforcing structure. Therefore, excessive weight increase can be suppressed and weight efficiency can be improved. Therefore, it is advantageous to increase the resonant frequency.

[0225] Furthermore, because the second reinforcing portion 46 is spaced apart from the display panel 5, another device, such as a connector and an IC chip, can be placed in the space. That is, the flexibility of circuit configuration can be increased.

[0226] Furthermore, the second reinforcing portion 46 is positioned facing the node of natural vibration occurring in the display panel 5. Then, a vibration damping member made of a material with a damping effect is positioned between the second reinforcing portion 46 and the vibration suppression point, which is the node of natural vibration. This configuration can be achieved, and the component of natural vibration can be suppressed.

[0227] [Feedback Control]

[0228] Figure 13 This is a schematic diagram showing an example configuration of the drive control unit of the drive actuator 9.

[0229] Figure 14 This is a schematic diagram illustrating an example of attaching a sensor to display panel 5.

[0230] In this embodiment, the drive control unit 48 can perform feedback control based on the output of the sensor 49.

[0231] The drive control unit 48 includes a drive signal generation unit 50 for generating drive signals for driving one or more actuators 9, a filter 51, an amplifier 52, and an optimization calculation unit 53.

[0232] Figure 13 The boxes shown are composed of Figure 1 The control unit 1 shown is implemented. For example, by executing a predetermined program by a processor (e.g., CPU), Figure 13 The individual blocks shown can be implemented as software blocks. Alternatively, dedicated hardware such as ICs (integrated circuits) can be used.

[0233] The drive signal generation unit 50 generates drive signals for driving the actuators 9. For example, suppose multiple actuators 9 are used for a display panel 5. In this case, the drive signal generation unit 50 generates drive signals that are synchronized with each other, so that the actuators 9 generate vibrations with the same phase and the same amplitude.

[0234] Filter 51 performs signal processing on the drive signal. For example, filter 51 changes the gain of the drive signal and applies an offset.

[0235] Amplifier 52 outputs the drive signal processed by filter 51 to actuator 9.

[0236] The optimization calculation unit 53 performs optimization calculations based on the output of the sensor 49 and determines the filter characteristics of the filter 51.

[0237] The feedback control of the drive signal is performed on each actuator 9. That is, the filter 51, amplifier 52, and optimization calculation unit 53 can generate an optimal drive signal and output the generated drive signal to each actuator 9. Specifically, the drive signal is optimized so that each actuator 9 generates vibration with the same phase and the same amplitude.

[0238] It should be noted that there are no restrictions on specific algorithms for signal processing of filter 51, signal amplification of amplifier 52, and optimization of filter characteristics of optimization calculation unit 53. Any algorithm can be used.

[0239] For example, suppose an acceleration sensor is used as sensor 49. In this case, such as Figure 14 As shown in part A, sensor 49 is mounted on the rear surface portion 5b of display panel 5 near each actuator 9. As a result, an optimal drive signal can be generated based on the detection results of sensor 49, and the generated drive signal is output to each actuator 9.

[0240] Assume that an IMU sensor, including a multi-axis accelerometer and a multi-axis gyroscope, is used as sensor 49. In this case, sensor 49 may be configured at the center of the rear surface portion 5b of the display panel 5.

[0241] The optimal drive signal can be generated based on the output of sensor 49, and the generated drive signal can be output to each actuator 9.

[0242] like Figure 14 As shown in part C, the actuator 9 and sensor 49 can be integrally formed. For example, in the use of... Figure 6 , Figure 9 In the case of the electromagnetic actuator 9 shown, the sensor 49 can be installed in the hollow part inside the drive winding tube 16.

[0243] It goes without saying that the electromagnetic actuator 9 is not necessary, and even in the case of using another type of actuator 9, the actuator 9 and the sensor 49 can be integrally formed. Furthermore, any configuration and method can be used as a configuration, method, etc. for integrally forming the actuator 9 and the sensor 49.

[0244] By integrating the actuator 9 and the sensor 49 into a single unit, a module that also includes the sensor 49 can be formed. As a result, the operability of mounting the sensor 49 can be significantly improved.

[0245] In the sound generation mechanism according to this technology, since the display panel 5 (display substrate) is used as a diaphragm in a normal speaker, the effect of increased weight and constant applied gravity is increased in some cases.

[0246] For example, in the display unit 2 used for Figure 2 and Figure 3 When the Y direction shown is taken as the vertical direction, the gravity of the display panel 5 acts in a direction perpendicular to the vibration direction (Z direction).

[0247] When the display unit 2 is used at an angle to the vertical, the direction of gravity of the display panel 5 and the direction of vibration of each actuator 9 intersect each other at an angle. Therefore, the plane direction of the plane connecting the center position of the vibration of each actuator 9 and the direction of gravity of the display panel 5 also intersect each other at an angle.

[0248] In this case, since the gravitational component applied to the display panel 5 of each actuator 9 is not uniform, there is a possibility of rolling and other vibration changes occurring from each actuator 9.

[0249] like Figure 13 As shown, a drive control unit 48 is formed, and feedback control of the drive signal is performed based on the output of the sensor 49. As a result, it is possible to prevent vibration from changing due to variations in the gravitational component applied to each actuator 9. Therefore, the display panel 5 can vibrate smoothly and uniformly and exhibits high acoustic characteristics.

[0250] Note that the sampling rate of sensor 49 is set to be equal to the frame rate driven by actuator 9, i.e., the frame rate of the acoustic signal. As a result, feedback control can be performed with high precision.

[0251] exist Figure 13 and Figure 14 In the illustrated embodiment, sensor 49 serves as a detection unit for detecting the vibration state of the display panel. Furthermore, drive control unit 48 serves as a drive control unit that generates drive signals for driving each of one or more actuators based on the detected vibration state of the display panel.

[0252] [Image / Sound Matching Control]

[0253] In this embodiment, an image can be displayed via the display panel 5, and sound can be output by vibrating the display panel 5. Therefore, image / sound matching control for displaying images and outputting sound can be performed with high precision.

[0254] exist Figure 2 In the example shown, images and sounds can be easily output in sync with each other. For example, words can be output from the mouth of the woman on the left based on the woman's speaking action, words can be output from the mouth of the man on the right based on the man's speaking action, or the sound of rubbing paper can be output based on the woman's action of picking up a letter on the table.

[0255] Furthermore, the display panel 5 can vibrate in the direction in which text is generated based on the direction the woman's or man's face is facing. Needless to say, the sound of a lightning strike can also be easily output to the outside of the window via the display panel 5. This allows for high-precision image / sound matching control and facilitates high-quality output of both images and sound.

[0256] Figure 15 This is a schematic diagram illustrating an example of a system configuration for performing image / sound matching control.

[0257] Figure 1 The control unit 1 shown comprises a splitter 55, a video decoder 56, and an audio decoder 57.

[0258] Furthermore, the display unit 2 comprises multiple control units 57. Each control unit 57 corresponds to a unit for which image / sound matching control is to be performed. For example, it can be... Figure 2 and Figure 3 The display unit 3 shown is used as a single unit to perform image / sound matching control. In this case, one display unit 3 corresponds to one control unit 57.

[0259] Alternatively, the display panel 5 can be used as a single unit to perform image / sound matching control. In this case, one display panel 5 corresponds to one control unit 57.

[0260] Alternatively, an image / acoustic element unit attached to the display panel 5 (display substrate) can be used as a control unit 57 to perform image / sound matching control. For example, it is conceivable that a predetermined plurality of display panels 5 are used as a single control unit 57. Alternatively, a predetermined pixel region in the display panel 5 can be used as a control unit 57. In this case, a configuration that allows the pixel region serving as the control unit 57 to vibrate can be adopted, rather than allowing the display panel 5 to vibrate uniformly.

[0261] Furthermore, the control unit for image display and the control unit for sound output do not necessarily need to have a one-to-one correspondence. For example, image display can be performed on display panel 5 and sound output can be performed on display unit 3. Such image / sound matching control is also possible.

[0262] Control unit 1 receives content data. Splitter 55 splits the content data into audio data and video data. Video decoder 56 and audio decoder 57 decode the video data and audio data respectively, and the decoded data segments are transmitted via signal lines 58a and 58b as video output signals and audio output signals to each control unit 57 formed in display unit 2.

[0263] The video output signal and the audio output signal are sent separately to each control unit 57. Therefore, for example, relevant audio data can be easily transmitted to the control unit 57 that displays audio-related video.

[0264] like Figure 15 As shown, control can be easily implemented, such as outputting an audio signal including the sound of clapping to a control unit 57 when a person on the left moves to the right while clapping, and the control unit outputs a video signal of the person moving to the right. Furthermore, the video output signal of the control unit 57 can be transmitted to a control unit 57 located on its periphery, which outputs a video signal of the person. Therefore, high-quality image / sound matching control can be easily achieved.

[0265] The video output signal can also be considered an image signal. Furthermore, the audio output signal can also be an audio signal. Additionally, a drive signal for driving actuator 9 is generated based on the audio output signal. Needless to say, the drive signal can be generated as an audio output signal and output.

[0266] Figure 16 This is a block diagram showing an example configuration of the audio decoder 57.

[0267] exist Figure 16 In the example shown, a channel audio renderer 59, an object audio renderer 60, and a scene-based audio renderer 61 are formed. Therefore, the audio decoder 57 is capable of processing channel audio, object audio, and scene-based (high-fidelity stereo) audio.

[0268] The channel audio renderer 59 generates sound output signals based on the channel audio received as audio data to output to each control unit 57. For example, the output of the acoustic output signal based on the object to be displayed (e.g., a person or object) can be controlled based on the acoustic signal of the channel included in the channel audio.

[0269] The object audio renderer 60 generates a sound output signal based on the object audio received as audio data to output to each control unit 57. For example, by processing the sound signal included in the object audio and metadata indicating the location separately, the output of the sound output signal can be controlled according to the object to be displayed (e.g., a person or object).

[0270] The scene-based audio renderer 61 generates sound output signals based on the scene-based audio received as audio data and outputs them to each control unit 57. For example, by processing first-order or higher-order high-fidelity stereo signals included in the scene-based audio, the output of the sound output signals can be controlled according to the object to be displayed (e.g., a person or object).

[0271] Needless to say, the audio decoder 57 can also process audio data of every format generated as 3D audio data. It can also realize 3D spatial sound based on 3D audio data.

[0272] It should be noted that the relay board can be used to transmit video output signals and audio output signals from the control unit 1. Then, the display panel 5 and the relay board can be connected to each other via a flexible substrate, wiring, etc. Therefore, video output signals and audio output signals can be transmitted to the display panel 5 without interfering with the vibration of the display panel 5.

[0273] This technology can be applied as... Figure 4 The relay board, etc., is a part of the unit substrate 6 shown. That is, the actuator 9 can be disposed between the relay board and the display panel 5 to drive the display panel 5.

[0274] [Friction-reducing structure / Contact area-reducing structure]

[0275] Figure 17 This is a schematic diagram illustrating an example configuration of a friction-reducing structure and a contact area-reducing structure.

[0276] like Figure 17 As shown, it is assumed that multiple display panels 5 are used, and the display surfaces 5a are arranged in two dimensions. In this case, for example, if each of the multiple display panels 5 is driven individually to output sound, there is a possibility that problems such as abnormal noise and damage may occur due to contact between adjacent display panels 5.

[0277] That is, there exist multiple display panels 5 with adjacent end surfaces 5c (see [reference]). Figure 5 The possibility of problems arising from contact between them.

[0278] In this regard, such as Figure 17As shown in part A, a structure 63 for reducing friction (hereinafter referred to as the friction-reducing structure) is formed between adjacent end surfaces 5c. Or, as Figure 17 As shown in part B, a structure for reducing the contact area (hereinafter referred to as the contact area reduction structure) 64 is formed between adjacent end surfaces 5c. Therefore, problems such as the generation of abnormal noise can be prevented.

[0279] exist Figure 17 In the example shown in part A, a low-friction structure 63 is formed by coating the end surface 5c with a low-friction material 65.

[0280] Examples of low-friction materials 65 include PTFE (polytetrafluoroethylene). PTFE is a polymer of tetrafluoroethylene and is a fluoropolymer (fluorocarbon polymer) formed only by fluorine and carbon atoms.

[0281] It goes without saying that this technology is not limited to this, and any low-friction material such as PPS (polyphenylene sulfide) can be used. Furthermore, any configuration other than coating with low-friction material 65 can be adopted as a configuration for achieving the low-friction structure 63.

[0282] exist Figure 17 In the example shown in part B, a contact area reduction structure 64 is formed by forming protrusions 66 on the end surface 5c. The shape, number, etc., of the protrusions 66 are not limited and can be designed arbitrarily. Furthermore, any configuration other than forming protrusions 66 can be used as the configuration for implementing the contact area reduction structure 64.

[0283] also, Figure 17 The low-friction structure 63 shown in part A and Figure 17 The contact area reduction structure 64 shown in part B can be combined. For example, the protrusion 66 can be coated with a low-friction material 65.

[0284] As described above, in the display device 100 according to this embodiment, one or more display panels 5 output images. Furthermore, an actuator 7 is arranged between the display panel 5 and the support portion 8 of the unit substrate 6, and the display panel 5 is vibrated. As a result, high-precision image / sound matching control is possible, and high-quality images and sounds can be output.

[0285] Furthermore, in the display device 100, the display panel 5 is supported by the unit substrate 6 via the actuator 9. Therefore, apart from the portion including the actuator 9, there is no portion defining the relative position between the display panel 5 and the unit substrate 6. Thus, the entire display panel 5 can be moved in parallel without interfering with the vibration of the display panel 5, and high-quality sound reproduction, including broadband sound, can be achieved.

[0286] For example, suppose that in addition to the portion including the actuator 9, a portion is also formed to support the display panel 5. In this case, since the supporting portion is fixed, the display panel 5 vibrates while partially bending. In this case, it is difficult to reproduce broadband sound. Furthermore, the directionality of the sound becomes complex when bending occurs. Therefore, when using multiple display panels 5 to output sound, adjusting the wavefront requires complex processing. Applying this technology eliminates the need for such complex processing.

[0287] Furthermore, as mentioned above, by suppressing the separation vibration (natural vibration), it is possible to prevent an extreme drop in sound pressure at the separation vibration frequency (resonance frequency) and exhibit high acoustic characteristics.

[0288] In video content that combines video and sound, image / sound matching plays a crucial role in enhancing the viewer's immersion in the content. In many types of content, the goal is to present elements such as actors' lines and sound effects, ensuring that the positions of actors and effects in the video are matched with their localized locations.

[0289] Therefore, speakers are arranged in cinemas to suit the reproduction of content. Specifically, in cinemas, since a projector projects video onto a screen and the screen allows sound to pass through, a method is adopted in which speakers are arranged on the side of the screen opposite the viewer, and the sound is reproduced through the screen.

[0290] Meanwhile, although LED displays (LED panels) have been developed that can present video with high definition and wide dynamic range, unlike screens, these displays cannot allow sound to pass through, and the speakers cannot be positioned in the same direction as the video presentation area, making it difficult to achieve image / sound matching.

[0291] Furthermore, compared to screens, LED displays are self-emissive and reduce video quality degradation caused by ambient light sources. Additionally, LED displays eliminate the need for optically-dependent image projection devices, such as projectors. Therefore, they are highly useful for applications such as digital signage on streets and interactive content for viewers.

[0292] By applying this technology, LED displays can be used to perform high-precision image / sound matching control. As a result, for example, the immersion in video content can be improved. Furthermore, content recognizability can be enhanced.

[0293] Furthermore, digital signage can achieve high advertising effectiveness. It also enables high-quality remote work (remote office work) and provides high-quality output images and sound for various applications.

[0294] Furthermore, because there is no attenuation of sound or interference with the wavefront, such as the screens used in cinemas, it is possible to generate arbitrary wavefronts and achieve new sound field performances that did not exist in the past.

[0295] <Other Embodiments>

[0296] This technology is not limited to the above embodiments, and various other embodiments can be implemented.

[0297] The output device according to this technology and another output device capable of outputting images, sounds, etc., can operate in cooperation with each other. Furthermore, the output device capable of outputting images, sounds, etc., can be installed independently in the output device according to this technology, and can cooperate with each other to perform operations.

[0298] For example, an external speaker communicatively connected to an output device according to the present technology and the output device according to the present technology may cooperate with each other. Alternatively, a speaker incorporated in the output device according to the present technology and one or more display panels according to the present technology capable of outputting sound by vibration may cooperate with each other.

[0299] Therefore, it can achieve realistic sound output and provide a high-quality viewing experience.

[0300] There are no limitations on the fields and devices in which this technology can be applied. For example, this technology can be applied to any device that outputs images and sound and can be used in any field, such as screen replacements for cinemas, digital signage, home televisions, and various display devices.

[0301] The display device 100 according to this embodiment can also be referred to as a video display device or a sound display device. Furthermore, it can also be referred to as a signal processing device, focusing on the fact that it performs signal processing for outputting images and sound.

[0302] The display device, display unit, display panel, actuator, unit substrate, connecting mechanism, fixing mechanism, frame member, reinforcing member, each configuration such as the system configuration after image / sound matching, and the feedback control and image / sound matching control flow described with reference to the accompanying drawings are merely embodiments and can be arbitrarily modified without departing from the essence of the present technology. That is, another arbitrary configuration, algorithm, etc., for implementing the present technology can be adopted.

[0303] In this disclosure, the use of the word "substantially" is merely to aid in understanding the description, and the use / absence of the word "substantially" has no special meaning.

[0304] That is, in this disclosure, the concepts of shape, size, positional relationship, state, etc., such as "center", "middle", "uniform", "equal", "same", "orthogonal", "parallel", "symmetrical", "extended", "axial direction", "cylindrical shape", "circular shape", "ring shape", and "ring shape" include the concepts of "substantially center", "substantially middle", "substantially uniform", "substantially equal", "substantially same", "substantially orthogonal", "substantially parallel", "substantially symmetrical", "substantially extended", "substantially axial direction", "substantially cylindrical shape", "substantially circular shape", "substantially ring shape", "substantially ring shape", etc.

[0305] For example, it also includes states within a predetermined range (e.g., a range of ±10%) based on terms such as “completely centered”, “completely intermediate”, “completely uniform”, “completely equal”, “completely identical”, “completely orthogonal”, “completely parallel”, “completely symmetrical”, “completely extended”, “completely axial”, “completely cylindrical”, “completely cylindrical”, “completely annular”, “completely circumferential”, etc.

[0306] Therefore, even without adding the word "basically," the concept expressed by adding "basically" can be included. Conversely, the complete state is not excluded from the state expressed by adding "basically."

[0307] In this disclosure, the use of expressions such as "greater than A" and "less than A" comprehensively includes both the concept of cases that are equivalent to A and the concept of cases that are not equivalent to A. For example, the phrase "greater than A" is not limited to excluding cases that are equivalent to A, but includes "above A". Furthermore, the phrase "less than A" is not limited to "less than A" and includes "A or less".

[0308] When implementing this technology, it is only necessary to adopt specific settings based on the concepts included in "greater than A" and "less than A" to achieve the above-mentioned effect.

[0309] In the aforementioned features according to the present technology, at least two features can be combined. That is, without distinguishing between the various embodiments, the various features described in the various embodiments can be arbitrarily combined with each other. Furthermore, the various effects described above are merely illustrative and not limiting, and other effects may be observed.

[0310] It should be noted that this technology can also be configured as follows.

[0311] (1) An output device, comprising:

[0312] One or more display panels capable of displaying images;

[0313] Supporting members, including support portions for supporting each of one or more display panels; and

[0314] An actuator section is disposed between one or more display panels and a support section, and causes each of the one or more display panels to vibrate.

[0315] (2) The output device according to (1), wherein,

[0316] The support member supports one or more display panels via the actuator section.

[0317] (3) The output device according to (2), wherein,

[0318] Each of one or more display panels has a display surface for displaying images and a rear surface portion on a side opposite to the display surface.

[0319] The actuator section includes one or more actuators prepared for each of the one or more display panels and connected to the rear surface portion of each of the one or more display panels, and

[0320] The support section secures and holds one or more actuators.

[0321] (4) The output device according to (3) further includes:

[0322] A fixing mechanism for securing one or more actuators to a support portion.

[0323] (5) The output device according to (4), wherein,

[0324] The fixing mechanism includes fastening components, and

[0325] One or more actuators are secured to the support portion by means of fastening members.

[0326] (6) The output device according to (4) or (5), wherein,

[0327] The fixing mechanism includes a magnet, and

[0328] One or more actuators are fixed to the support portion by the magnetic force of a magnet.

[0329] (7) The output device according to any one of (3) to (6), wherein,

[0330] One or more actuators are electromagnetic actuators, piezoelectric actuators, or magnetostrictive actuators.

[0331] (8) The output device according to any one of (3) to (7), wherein,

[0332] One or more actuators are electromagnetic actuators that include a magnetic circuit, and

[0333] The fixing mechanism includes a magnet connected to an electromagnetic actuator and has the orientation of the magnetic poles set according to the configuration of the magnetic circuit.

[0334] (9) The output device according to (8), wherein,

[0335] The magnets connected to the electromagnetic actuator form a magnetic circuit.

[0336] (10) The output device according to any one of (3) to (9), further comprising:

[0337] A connection mechanism for connecting one or more actuators to a display panel.

[0338] (11) The output device according to (10), wherein,

[0339] One or more actuators are electromagnetic actuators and include a coil and a winding tube, the coil being wound around the winding tube, and

[0340] The connection mechanism includes connecting members for connecting the winding tube to the display panel.

[0341] (12) The output device according to any one of (3) to (11), wherein,

[0342] One or more actuators are configured to be attached to or detached from the display panel.

[0343] (13) The output device according to any one of (3) to (12), wherein,

[0344] One or more actuators include multiple actuators, and

[0345] The actuator section includes a frame member that holds multiple actuators in a predetermined positional relationship.

[0346] (14) The output device according to (13), wherein,

[0347] Each of the multiple actuators can be detachably screwed to the rear surface portion of the display panel, and

[0348] The frame members can rotatably hold multiple actuators.

[0349] (15) The output device according to any one of (3) to (14), wherein,

[0350] One or more actuators are connected to the location of nodes that generate natural vibrations in the display panel.

[0351] (16) The output device according to any one of (1) to (15), further comprising:

[0352] A reinforcing member that connects to the rear surface portion of the display panel.

[0353] (17) The output device according to any one of (1) to (16), further comprising:

[0354] The detection section measures the vibration status of the display panel; and

[0355] The drive control unit generates a drive signal for driving each of one or more actuators based on the detected vibration state of the display panel.

[0356] (18) The output device according to any one of (1) to (17), wherein,

[0357] One or more display panels are multiple display panels having display surfaces for displaying images, the display surfaces being arranged in a two-dimensional manner, and

[0358] Structures designed to reduce friction are formed between adjacent end surfaces of multiple display panels.

[0359] (19) The output device according to any one of (1) to (18), wherein,

[0360] The one or more display panels are multiple display panels having display surfaces for displaying the images, the display surfaces being arranged in a two-dimensional manner, and

[0361] Structures that reduce contact area are formed between adjacent end surfaces of multiple display panels.

[0362] (20) The output device according to any one of (1) to (19), further comprising:

[0363] Multiple display units, each display unit including one or more display panels, actuators and support members.

[0364] (21) The output device according to (18), wherein,

[0365] The structure used to reduce friction is formed by coating the end surface with a low-friction material.

[0366] (22) The output device according to (19), wherein,

[0367] The structure that reduces the contact area is formed by forming a protrusion on the end surface. (23) The output device according to any one of (1) to (22), wherein one or more display panels are LED panels.

[0368] Reference number list

[0369] 3 display units

[0370] 5 Display Panels

[0371] 5a display surface

[0372] 5b rear surface portion

[0373] 5c end surface

[0374] 6-unit substrate

[0375] 7 actuators

[0376] 8 Supporting parts

[0377] 9 actuators

[0378] 12 fixed units

[0379] 13 Activity Units

[0380] 15 voice coils

[0381] 16 drive winding tube

[0382] 18 screw holes

[0383] 19 Connecting Components

[0384] 39 Frame Components

[0385] 44 Reinforcing Components

[0386] 48 Drive Control Unit

[0387] 49 sensors

[0388] 63 Low Friction Structure

[0389] 64. Structures that reduce contact area

[0390] 65 Low Friction Material

[0391] 66 protrusions

[0392] 100 display devices

Claims

1. An output device, comprising: At least one display panel is configured to display an image; The support member includes a support portion configured to support at least one of the display panels; An actuator section is located between at least one of the display panels and the support portion, wherein... The actuator is configured to vibrate at least one of the display panels, and The actuator section includes at least one actuator; The detection section is configured to detect the vibration state of at least one of the display panels, and The drive control unit is configured as follows: A driving signal is generated based on the detected vibration state; and At least one of the actuators is driven based on the generated drive signal.

2. The output device according to claim 1, wherein, The support member is configured to support at least one of the display panels via the actuator section.

3. The output device according to claim 2, wherein, At least one of the display panels includes a display surface and a rear surface portion, the rear surface portion being located on a side opposite to the display surface. The at least one display panel is configured to display the image on the display surface. At least one of the actuators is connected to at least one rear surface portion of the display panel, and The support portion is configured to fix and hold at least one of the actuators.

4. The output device according to claim 3, further comprising: A fixing mechanism is configured to fix at least one of the actuators to the support portion.

5. The output device according to claim 4, wherein, The fixing mechanism includes fastening components, and The fastening member is configured to secure at least one of the actuators to the support portion.

6. The output device according to claim 4, wherein, The fixing mechanism includes a magnet, and The magnet is configured to fix at least one of the actuators to the support portion based on the magnetic force of the magnet.

7. The output device according to claim 3, wherein, At least one of the actuators includes at least one of an electromagnetic actuator, a piezoelectric actuator, and a magnetostrictive actuator.

8. The output device according to claim 4, further comprising: The fixing mechanism includes a magnet, wherein, At least one of the actuators is an electromagnetic actuator including a magnetic circuit, and The magnet is connected to the electromagnetic actuator, and The orientation of the magnetic poles is based on the configuration of the magnetic circuit.

9. The output device according to claim 8, wherein, The magnetic circuit includes the magnet.

10. The output device according to claim 1, further comprising: A connection mechanism is configured to connect at least one of the actuators to at least one of the display panels.

11. The output device according to claim 10, wherein, At least one of the actuators is an electromagnetic actuator comprising a coil and a winding tube, the coil being wound around the winding tube, and The connection mechanism includes a connection member configured to connect the winding tube to at least one of the display panels.

12. The output device according to claim 3, wherein, At least one of the actuators can be detached from at least one of the display panels.

13. The output device according to claim 3, further comprising: Multiple actuators, including at least one of the actuators, wherein, The actuator section further includes a frame member configured to hold each of the plurality of actuators in a specific positional relationship.

14. The output device according to claim 13, wherein, Each of the plurality of actuators is detachably screwed to at least one rear surface portion of the display panel, and The frame member is also configured to rotatably hold the plurality of the actuators.

15. The output device according to claim 3, wherein, At least one of the actuators is connected to a position in the display panel corresponding to a node that vibrates naturally.

16. The output device according to claim 1, further comprising: A reinforcing member is attached to at least one rear surface portion of the display panel.

17. The output device according to claim 1, further comprising: Multiple display panels, including multiple display surfaces, wherein, The plurality of the display panels are configured to display the image on the plurality of the display surfaces; The plurality of display surfaces are arranged in a two-dimensional manner. Each of the adjacent display panels includes a structure configured to reduce friction between the end surfaces of the plurality of adjacent display panels, and The plurality of display surfaces also include adjacent display panels and at least one of the display panels.

18. The output device according to claim 1, further comprising: Multiple display panels, including multiple display surfaces, wherein, The plurality of display panels are configured to display the image on the plurality of display surfaces. The plurality of display surfaces are arranged in a two-dimensional manner. Each of the adjacent display panels includes a structure configured to reduce the contact area between the end surfaces of the adjacent display panels, and The plurality of display panels includes adjacent display panels and at least one of the display panels.

19. The output device according to claim 1, further comprising: A plurality of display units, wherein each of the plurality of display units includes at least one of the display panels, the actuator portion and the support member.

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