Display devices and television receivers

Abstract

To suitably emit sound toward the front of a display device, and obtain natural sound image localization.SOLUTION: In a display device with one or more speakers, the speaker is arranged on at least one of the upper side, the right side, and the left side of the peripheral portion on the back side of the display device, and the sound emitting surface of the speaker is inclined such that the normal line of the sound emitting surface is inclined toward the front side of the display device.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a display device and a television receiver.

Background Art

[0002] Conventionally, the following multi-channel audio playback device is known. For example, Patent Document 1 discloses a configuration in which an obliquely conical speaker is used for a first center speaker disposed upward on the screen of a video display device and a second center speaker disposed forward on the lower side of the screen in a multi-channel audio playback device.

[0003] Here, the video display device is assumed to be a relatively deep one typified by a cathode ray tube television. Therefore, it is premised that an obliquely conical speaker having a depth sufficient to exhibit its original performance can be mounted on the upper side of the screen.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the conventional technology as described above, when the depth of the obliquely conical speaker cannot be sufficiently ensured, the effect of emitting sound toward the front of the video display device is not sufficient, and there is a problem that sound hardly reaches the front area of the video display device.

[0006] One aspect of the present invention aims to realize a technology capable of suitably emitting sound toward the front of a display device and obtaining natural sound image localization.

Means for Solving the Problems

[0007] To solve the above problems, a display device according to one aspect of the present invention is a display device equipped with one or more speakers, wherein the speakers are arranged on at least one of the top edge, right edge, and left edge of the peripheral area on the back side of the display device, and the sound-emitting surface of the speakers is inclined such that the normal of the sound-emitting surface is inclined toward the front side of the display device. [Effects of the Invention]

[0008] According to one aspect of the present invention, it is possible to suitably emit sound toward the front of the display device, thereby realizing a technology that can obtain natural sound image localization. [Brief explanation of the drawing]

[0009] [Figure 1] These are a front view and a perspective view from the rear of a display device according to Embodiment 1 of the present invention. [Figure 2] Figure 1 is a schematic diagram showing the arrangement of speakers (at the top edge of the screen) of the display device shown. [Figure 3] Figure 1 is a schematic diagram showing the arrangement of speakers (at the top edge of the screen) of the display device shown. [Figure 4] This figure shows the detailed structure of the speaker of the display device shown in Figure 2. [Figure 5] Figure 1 is a rear view of the display device shown. [Figure 6] Figure 2 shows a detailed cross-sectional view (part 1) of the speaker of the display device, cut along the XZ plane. [Figure 7] Figure 1 is a schematic diagram showing the operating state of the speaker of the display device. [Figure 8] This figure (part 1) shows the detailed configuration of the speaker of the display device shown in Figure 1. [Figure 9] This figure (part 2) shows the detailed speaker configuration of the display device shown in Figure 1. [Figure 10] This figure (part 3) shows the detailed configuration of the speaker of the display device shown in Figure 1. [Figure 11]It is a partial cross-sectional view taken along the X-Z plane showing the detailed configuration of the speaker of the display device shown in FIG. 2 (Part 2). [Figure 12] It is a view showing the mounting state of the speaker of the display device shown in FIG. 1. [Figure 13] It is a rear schematic view showing the operating state of the speaker of the display device shown in FIG. 1. [Figure 14] It is a rear view of the display device according to Embodiment 2 of the present invention. [Figure 15] It is a rear view of the display device according to Embodiment 3 of the present invention (Part 1). [Figure 16] It is a rear view of the display device according to Embodiment 3 of the present invention (Part 2). [Figure 17] It is a rear view of the display device according to Embodiment 3 of the present invention (Part 3). [Figure 18] It is a rear view of the display device according to Embodiment 4 of the present invention (Part 1). [Figure 19] It is a rear view of the display device according to Embodiment 4 of the present invention (Part 2). [Figure 20] It is a rear view of the display device according to Embodiment 5 of the present invention (Part 1). [Figure 21] It is a rear view of the display device according to Embodiment 5 of the present invention (Part 2). [Figure 22] It is a rear view of the display device according to Embodiment 5 of the present invention (Part 3). [Figure 23] It is a rear view of the display device according to Embodiment 6 of the present invention.

Mode for Carrying Out the Invention

[0010] 〔Embodiment 1〕 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view and a perspective view seen from an oblique rear of a display device 1 according to the present embodiment. The display device 1 includes, as an example, a television receiver.

[0011] In this context, "display devices" refer to display devices such as LCD (Liquid Crystal Display) and OLED (Organic Light Emitting Diode) technologies.

[0012] Figure 2 is a schematic diagram showing the arrangement of the speakers (at the top edge of the screen) of the display device 1 shown in Figure 1. As shown in Figure 2, the display device 1 is equipped with speakers 10. The number of speakers 10 is not particularly limited and may be one or more. Also, reference numeral 11 in Figure 1 indicates a back cabinet for holding the speakers 10.

[0013] Figure 3 is a schematic diagram showing the arrangement of the speaker 10 on the display device 1 (at the top edge of the screen) as shown in Figure 1. As shown in Figures 2 and 3, the speaker 10 is positioned so as to be tilted toward the front of the display device 1. In Figures 2 and 3, the left side shows the front of the display device 1, and the right side shows the back of the display device 1.

[0014] Specifically, in Figure 2, the speaker 10 is positioned such that the front side of the sound-emitting surface 15 is lower than the rear side. In other words, the sound-emitting surface 15 of the speaker 10 is inclined such that the normal vector NL of the sound-emitting surface 15 is inclined toward the front side of the display device 1.

[0015] Here, "front side" refers to the side opposite to the direction indicated by coordinate axis X in Figure 2 (also called the front of the display device 1), and "back side" refers to the side in the direction indicated by coordinate axis X in Figure 2.

[0016] Regarding the placement of the speaker 10, it can be placed on at least one of the top edge, right edge, or left edge of the rear peripheral area of ​​the display device 1. Figures 2 and 3 show that the speaker 10 is placed on the top edge of the rear peripheral area of ​​the display device 1. Configurations in which the speaker 10 is placed on the right edge or left edge of the rear peripheral area of ​​the display device 1 will be described later.

[0017] Here, the "right side" (or "left side" from the front) refers to the side in the direction indicated by the coordinate axis Y in Figure 2, while the "left side" (or "right side" from the front) refers to the side in the opposite direction to the direction indicated by the coordinate axis Y in Figure 2. The "top side" refers to the side in the direction indicated by the coordinate axis Z in Figure 2.

[0018] As an example, as shown in the right-hand diagram of Figure 3, the angle between the plane containing the sound-emitting surface 15 of the speaker 10 and the XY plane in Figure 3 is 20°. This does not limit this embodiment; this inclination angle may also be 15°, 25°, 10°, or 45°.

[0019] As described above, the sound-emitting surface 15 of the speaker is inclined such that the normal NL of the sound-emitting surface 15 is inclined toward the front of the display device 1. This increases the component of the sound emitted from the speaker 10 toward the front, allowing the sound to be suitably emitted toward the front of the display device 1, resulting in natural sound image localization.

[0020] In particular, when conventional technology is applied to thin display devices such as liquid crystal displays or OLED displays, the depth of the oblique cone speaker cannot be sufficiently secured, resulting in insufficient effect in emitting sound forward of the display device, and thus a greater problem of sound not reaching the area in front of the display device. The present invention provides a greater improvement over this problem.

[0021] Let's continue the explanation. Figure 4 shows the detailed structure of the speaker 10 of the display device 1 shown in Figure 2. The illustration shows an example of one speaker. The illustration shows a structure in which the speaker 10 is equipped with a tweeter 16. As shown in Figure 4, the tweeter 16 is provided near the sound emission surface 15 of the speaker 10.

[0022] The 20° shown in Figure 4 is the inclination angle between the sound-emitting surface 15 and the XY plane, and the 55° is the inclination angle of the long axis of the tweeter 16 with respect to the extension of the long side of the sound-emitting surface 15. This inclination angle is not limited to 55°, and may be an angle from 0° to 90°.

[0023] By including a tweeter 16, the display device 1 can enhance the sense of localization near the center of the display device 1 and the sense of left-right expansion of the display device 1, thereby providing better sound to viewers viewing the display device 1.

[0024] Furthermore, according to this embodiment, even in environments where the ceiling of the viewer's room is high and ceiling reflection cannot be expected, the direct sound from the speaker 10 easily reaches the front of the display device 1, thus minimizing the influence of the environment.

[0025] Figure 5 is a rear view of the display device 1 shown in Figure 1. Figure 5 shows that two speakers are located on the upper edge of the rear periphery of the display device. Figure 6 is a partial cross-sectional view taken along the XZ plane, showing an example of the detailed configuration of the speaker 10 of the display device 1 shown in Figure 2.

[0026] In Figure 6, reference numeral 12 denotes a net and reference numeral 13 denotes a panel. As shown in Figure 6, the net 12 covers at least the sound-emitting surface 15 of the speaker 10. The panel 13 covers the net 12. The net 12 faces the diaphragm of the speaker 10. Details of the net 12 and panel 13 will be described later with reference to Figures 8 to 10.

[0027] Figure 7 is a schematic diagram showing the operating state of the speaker 10 of the display device 1 shown in Figure 1. As described above, according to this embodiment, the component of the sound emitted from the speaker 10 toward the front increases, and sound can be suitably emitted toward the front of the display device, resulting in natural sound image localization. Also, the coordinate axes in Figure 7 indicate that the display device is viewed from above.

[0028] Let's continue the explanation. Figure 8 shows an example of the detailed configuration of the speaker 10 of the display device 1 shown in Figure 1. As mentioned above, the display device 1 is equipped with a net 12. The net 12 protects the built-in components, including the speaker, from objects falling from above the display device.

[0029] The material of the net 12 may be metal or resin. In this embodiment, a metal net is used as an example. Also, in Figure 8, the net 12 is shown to cover the entire surface of the speaker 10, including the sound-emitting surface 15.

[0030] Figure 9 shows another example of the detailed speaker configuration of the display device shown in Figure 1. As described above, the display device 1 further includes a panel 13 in addition to the net 12. The panel 13 is cut out to conform to the shapes of the full-range section and the tweeter section, and the R-shape of the cutouts is applied to adjust their emission effects. The panel 13 allows for adjustment of the sound emission effect of the display device 1, thereby increasing the efficiency of sound emission in the diagonal forward direction and the left and right direction.

[0031] The material of panel 13 may be metal or resin. In this embodiment, a resin panel is used as an example. Also, as shown in Figure 9, the panel 13 has through holes in a position corresponding to the sound-emitting surface 15 of the speaker 10, with a shape similar to that of the sound-emitting surface 15 of the speaker 10. Furthermore, the thickness of panel 13 is uniform.

[0032] (Internet-based parable) Furthermore, although the above description describes a configuration in which the net 12 covers the entire surface of the speaker 10, including the sound-emitting surface 15, this is not limited to this embodiment, and the net may be configured to cover only the sound-emitting surface 15 of the speaker.

[0033] Figure 10 shows yet another example of the detailed configuration of the speaker of the display device shown in Figure 1. As shown in Figure 10, in the display device 1a, the net 12a covers only the sound-emitting surface 15 of the speaker 10a, specifically two sound-emitting surfaces 15 in the illustration.

[0034] According to the above configuration, the net shape can be made smaller, and material costs and processing costs can be reduced.

[0035] Furthermore, the opening structure may be made only of the cabinet without using a net (such as an opening made of micro-perforations or a single opening). In that case, there may or may not be a panel. If there is a panel, there may be openings (cutouts) in the area of ​​the panel corresponding to the shape of the full-range and tweeter sections, respectively. Another example of a case where there is a panel but no net is that instead of cutting out an opening in the panel, multiple openings made of micro-perforations may be made in the area corresponding to the shape of the full-range and tweeter sections, respectively. Alternatively, instead of having such a panel, the panel portion may be formed as an integral part of the cabinet, and multiple openings made of micro-perforations may be made in the area corresponding to the shape of the full-range and tweeter sections, respectively.

[0036] (Panel modification) Furthermore, although the above description describes a configuration in which the thickness of panel 13 is uniform, this is not limited to this embodiment, and the thickness of the panel does not have to be uniform.

[0037] Panel 13 does not necessarily have to be cut out to conform to the shapes of the full-range section and the tweeter section, but may be a single large cutout shape that includes both.

[0038] Figure 11 is a partial cross-sectional view taken along the XZ plane, showing another example of the detailed configuration of the speaker of the display device shown in Figure 2. Compared to the configuration shown in Figure 6, in Figure 11, a guide portion 14 is formed on the front side of the panel 13a, projecting in the direction indicated by the coordinate axis Z shown in Figure 11.

[0039] With this configuration, the sound emitted by the speaker 10 of the display device 1b is guided in front of the display device 1, thereby reducing diffuse reflection of the sound.

[0040] In the above description, a configuration in which speaker 10 is equipped with a tweeter 16 was described, but this is not limited to this embodiment, and the speaker in this embodiment does not need to be equipped with a tweeter.

[0041] (Speaker mounting status) Next, the mounting state of the speaker 10 of the display device 1 will be explained with reference to Figure 12. Figure 12 is a diagram showing the mounting state of the speaker of the display device shown in Figure 1. In Figure 12, the middle section is a side view of the display device 1 along the coordinate axis Y direction, and the right section is an enlarged view of A in the middle section.

[0042] As shown in Figure 12, the speaker 10 is positioned so that it is not visible from the front of the display device 1 on at least one of the top edge, right edge, and left edge (top edge in the illustration) of the rear peripheral area of ​​the display device 1.

[0043] More specifically, the speaker 10 positioned on a certain side (the top side in the diagram) is positioned such that its sound-emitting surface 15 is located closer to the center of the display device 1 than that side. In Figure 12, the symbol H indicates the distance between the top end of the speaker 10 and the top side of the display device 1. Also in Figure 12, the symbol L indicates the distance from the back end of the speaker 10 to the front of the display device 1.

[0044] For example, regarding the speaker mounting position, if the display device is an OLED type, and there are no protrusions extending to the top edge of the display screen, the speaker may be mounted near the top edge of the display screen. On the other hand, If it is a liquid crystal display device, and it has a backlight structure, and there is a protruding shape of the backlight chassis on the back of the display screen, it may be mounted on the non-sloping part of that protrusion.

[0045] Additionally, if you want to emphasize the design, you can mount the speaker in a position where it is slightly visible from the front of the display device.

[0046] Figure 13 is a schematic rear view showing the operating state of the speaker 10 of the display device 1 shown in Figure 1. As shown in Figure 13, the underspeaker 20 is located at the bottom edge of the rear peripheral area of ​​the display device 1. In the illustration, the number of underspeakers 20 is 2.

[0047] As shown in Figure 13, the speakers 10 are positioned on the upper edge of the rear periphery of the display device 1. In the illustration, there are also two speakers 10. As shown in the illustration, the distance between the two speakers 10 is narrower than the distance between the two underspeakers 20.

[0048] According to the above configuration, a comprehensive phantom center, or virtual center, is formed near the center of the display screen of the display device 1, and the effect of matching the display screen and the sound image localization position, or picture-sound matching, is obtained.

[0049] In Figure 13, the speaker driving conditions in this case are that the underspeaker 20 and speaker 10 are driven by the same signal, in phase, and at the same sound pressure level. That is, the underspeaker 20 on the right and speaker 10 on the right are driven by the audio signal for the right channel with the same signal, in phase, and at the same sound pressure level, while the underspeaker 20 on the left and speaker 10 on the left are driven by the audio signal for the left channel with the same signal, in phase, and at the same sound pressure level.

[0050] As shown in Figure 13, an under-phantom center is formed near the center of the two under-speakers 20, and similarly, a height phantom center is formed near the center of the two speakers 10. As described above, this creates an overall phantom center near the center of the display screen, resulting in an effect of matching sound and picture. A so-called center-height speaker-like acoustic system is constructed that combines the effect of improving sound image localization with the effect of center localization near the center of the display screen.

[0051] Furthermore, because the speaker 10 is tilted toward the front of the display device, the overall phantom center is formed further forward on the display screen, resulting in improved three-dimensionality and depth compared to conventional technology.

[0052] In this embodiment, the underspeaker 20 and speaker 10 differ in shape and performance. If the sound pressure of one is higher, the sound image position will inevitably be pulled towards that speaker. Therefore, in order to localize the sound image near the center of the screen, it is preferable to drive both at equivalent sound pressure levels.

[0053] For example, when speaker 10 is turned off, the sound image is localized near the bottom center of the display screen. Also, increasing the level (sound pressure) of speaker 10 can raise the position of the sound image. Conversely, lowering the level of speaker 10 can lower the position of the sound image.

[0054] Furthermore, if the frequency range of speaker 10 is partially limited by a filter, for example, if it is limited to only the mid-range frequencies, audio signals outside the speaker 10's playback range (other than mid-range frequencies) will be reproduced from the bottom of the diagram and localized at the bottom. Audio signals within the speaker 10's playback range (mid-range frequencies) will be reproduced from both the bottom and top of the diagram and localized in the mid-range frequencies near the center of the screen.

[0055] Audio signals in the frequency range where the playback frequency ranges of the underspeaker 20 and speaker 10 overlap can have their sound image raised.

[0056] From this perspective, it is preferable that the speaker 10 has a full-range reproduction frequency range in order to enhance the sound image across the entire frequency range, except for the very low frequencies (the frequency range reproduced by the subwoofer). In this embodiment, a tweeter 16 is also included.

[0057] On the other hand, it is also possible to drive the underspeaker 20 in a way that partially limits its frequency range with a filter. For example, if the sound pressure level of the underspeaker 20 is reduced only in the mid-range frequencies, the mid-range frequencies will be reproduced only by speaker 10, and the mid-range sound image can be localized to a position above the center of the display screen, while frequencies other than the mid-range can be localized to a position at a height near the center of the display screen. The localization position of the sound image can also be adjusted by the underspeaker 20 and its reproduction frequency range and reproduction level.

[0058] Furthermore, by turning off the output of speaker 10, the virtual center position can be limited to the area near the bottom of the screen, and conversely, by turning off the output of underspeaker 20, the virtual center position can be limited to the area near the top of the screen. This allows for free adjustment to suit the user's purpose of use and installation / listening environment.

[0059] [Embodiment 2] Other embodiments of the present invention are described below. For the sake of clarity, components having the same function as those described in the above embodiments will be denoted by the same reference numerals, and their descriptions will not be repeated.

[0060] Figure 14 is a rear view of the display device 1c according to this embodiment. As shown in Figure 14, in this embodiment, one speaker 10 is located in the middle of the upper edge of the peripheral area on the rear side of the display device 1c.

[0061] With the above configuration, similar to that of the display device 1, a comprehensive phantom center, or virtual center, is formed near the center of the display screen of the display device 1c, resulting in the effect of matching the display screen and the sound image localization position, i.e., picture-sound matching.

[0062] In Figure 14, the driving conditions for speaker 10 in this case are that it is driven by a signal (speaker 10 signal) which is the sum of the audio signal for the right channel and the audio signal for the left channel, at the same phase and equivalent sound pressure level.

[0063] The above configuration is advantageous in terms of cost because it requires only one speaker 10 and one amplifier circuit.

[0064] [Embodiment 3] Other embodiments of the present invention are described below. For the sake of clarity, components having the same function as those described in the above embodiments will be denoted by the same reference numerals, and their descriptions will not be repeated.

[0065] Figure 15 is a rear view of the display device 1d according to this embodiment. Figure 16 is a rear view of the display device 1e according to this embodiment. Figure 17 is a rear view of the display device 1f according to this embodiment.

[0066] Furthermore, in this embodiment, two speakers 10 are arranged on the upper edge of the rear peripheral portion of the display device, and the distance between the two speakers is adjustable. For example, a plurality of locking members may be provided on the upper edge of the rear side of the display device 1d, and the speakers 10 may be locked and fixed to predetermined locking members so that the distance between the two speakers 10 can be adjusted.

[0067] As an example, as shown in Figure 15, the distance between the two speakers 10 is narrower than the distance between the two underspeakers 20. As another example, as shown in Figure 16, the distance between the two speakers 10 is approximately the same as the distance between the two underspeakers 20. As yet another example, as shown in Figure 17, the distance between the two speakers 10 is wider than the distance between the two underspeakers 20.

[0068] The driving conditions for speaker 10 in this embodiment are the same as those for speaker 10 of the display device 1 described above, so their explanation will be omitted.

[0069] The above configuration allows for a variety of acoustic effects. For example, in the case of display device 1d, the sense of localization and sound image of the integrated phantom center is improved. On the other hand, in the case of display device 1e, the sense of left-right expansion of display device 1e is improved. On the other hand, in the case of display device 1f, the sense of left-right expansion of display device 1f is further improved.

[0070] By adjusting the spacing between the speakers 10 in this way, the overall phantom center becomes larger, and the sense of width in the left-right direction at the top of the display screen improves.

[0071] [Embodiment 4] Other embodiments of the present invention are described below. For the sake of clarity, components having the same function as those described in the above embodiments will be denoted by the same reference numerals, and their descriptions will not be repeated.

[0072] Figure 18 is a rear view of the display device 1g according to this embodiment. Figure 19 is a rear view of the display device 1h according to this embodiment.

[0073] This embodiment differs from the above-described embodiment in that the speaker 10 is positioned at a left-right tilt. This difference will be explained below.

[0074] As shown in Figures 18 and 19, in this embodiment, the speaker 10 is positioned at an angle with respect to the top edge of the display device, with the normal to the back of the display device as the axis of rotation.

[0075] As an example, as shown in Figure 18, the right speaker 10 is tilted to rotate clockwise around the normal to the back of the display device 1g as its axis of rotation, while the left speaker 10 is tilted to rotate counterclockwise around the normal to the back of the display device 1g as its axis of rotation. The tilt angle may be, for example, between 0° and 135°.

[0076] As another example, as shown in Figure 19, the right speaker 10 is tilted and positioned to rotate counterclockwise around the normal to the back of the display device 1h as the axis of rotation, while the left speaker 10 is tilted and positioned to rotate clockwise around the normal to the back of the display device 1h as the axis of rotation. The tilt angle may, for example, be between 0° and 45°.

[0077] According to the above configuration, for example, in the case of display device 1g, the long axis of the full-range speaker faces inward towards the device, so the directivity of the mid-range sound from the full-range speaker is improved toward the center of the device, and the sense of mid-range localization within the display screen area can be improved. On the other hand, in the case of display device 1h, the directivity of the full-range sound is improved toward outward towards the device, resulting in a better sense of spaciousness. Also, in both the display device 1g and 1h cases, the long axis of the tweeter 16 faces inward towards the device, so the directivity of the tweeter 16 at the display screen position is improved.

[0078] [Embodiment 5] Other embodiments of the present invention are described below. For the sake of clarity, components having the same function as those described in the above embodiments will be denoted by the same reference numerals, and their descriptions will not be repeated.

[0079] Figure 20 is a rear view of the display device 1j according to this embodiment. Figure 21 is a rear view of the display device 1k according to this embodiment. Figure 22 is a rear view of the display device 1m according to this embodiment.

[0080] This embodiment differs from the above-described embodiment in that the speaker 10 is also positioned on both the left and right sides of the display device. This difference will be explained below.

[0081] As shown in Figures 20 to 22, in this embodiment, speakers 10 are also arranged on the right and left edges of the peripheral area on the back side of the display device.

[0082] Furthermore, in this embodiment, the speaker 10 is positioned at an angle to the right and left sides of the display device, with the normal to the back of the display device as the axis of rotation.

[0083] As an example, as shown in Figure 20, the speaker 10 is positioned along the direction indicated by the coordinate axis Z on the right and left edges of the rear periphery of the display device 1j. As another example, as shown in Figure 21, the right speaker 10 is tilted to rotate counterclockwise around the normal to the back of the display device 1k as its axis of rotation, while the left speaker 10 is tilted to rotate clockwise around the normal to the back of the display device 1k as its axis of rotation.

[0084] On the other hand, as yet another example, as shown in Figure 22, the right speaker 10 is tilted and positioned to rotate clockwise with the normal to the back of the display device 1m as its axis of rotation, while the left speaker 10 is tilted and positioned to rotate counterclockwise with the normal to the back of the display device 1m as its axis of rotation.

[0085] According to the above configuration, the emission of sound toward the center of the display screen increases, making it easier for the overall phantom center to form near the center of the display screen. This improves the overall sense of localization while also creating a sense of spaciousness in the left-right direction, resulting in a display device with a greater sense of spaciousness.

[0086] [Embodiment 6] Other embodiments of the present invention are described below. For the sake of clarity, components having the same function as those described in the above embodiments will be denoted by the same reference numerals, and their descriptions will not be repeated.

[0087] Figure 23 is a rear view of the display device 1n according to this embodiment.

[0088] This embodiment differs from Embodiment 5 in that the speaker 10 is not placed on the upper edge of the display device 1n. This difference will be explained below.

[0089] As shown in Figure 23, in this embodiment, two underspeakers 20 are positioned on the lower edge of the rear peripheral area of ​​the display device 1n, and speakers 10 are positioned on the right and left edges of the rear peripheral area of ​​the display device 1n.

[0090] With the above configuration, the emission of sound towards the center of the display screen increases. Also, compared to the configuration of Embodiment 5, the overall phantom center position moves from the bottom of the screen to the center, improving the sense of localization while also creating a sense of spaciousness in the left-right direction.

[0091] 〔summary〕 A display device according to Embodiment 1 of the present invention is a display device equipped with one or more speakers, wherein the speakers are arranged on at least one of the top edge, right edge, and left edge of the peripheral area on the back side of the display device, and the sound-emitting surface of the speaker is inclined such that the normal of the sound-emitting surface is inclined toward the front side of the display device.

[0092] In the display device according to aspect 2 of the present invention, in aspect 1, the speaker may be positioned such that it is not visible from the front of the display device at least on the top edge, right edge, and left edge of the peripheral area on the back side of the display device.

[0093] In the display device according to embodiment 3 of the present invention, in embodiment 1 or 2, two underspeakers are arranged on the lower edge of the peripheral portion on the back side of the display device, and two speakers are arranged on the upper edge of the peripheral portion on the back side of the display device, and the distance between the two speakers may be narrower than the distance between the two underspeakers.

[0094] The display device according to aspect 4 of the present invention may further include a tweeter provided near the sound-emitting surface of the speaker, in any of the above aspects 1 to 3.

[0095] The display device according to aspect 5 of the present invention may further include a net covering at least the sound-emitting surface of the speaker, as in aspect 4 above.

[0096] The display device according to embodiment 6 of the present invention may further include a panel covering the net in embodiment 5.

[0097] In the display device according to embodiment 7 of the present invention, one speaker may be arranged on the upper edge of the peripheral portion on the back side of the display device, as in embodiment 3 above.

[0098] In the display device according to embodiment 8 of the present invention, the distance between the two speakers may be adjustable in embodiment 3.

[0099] In the display device according to embodiment 9 of the present invention, in embodiment 3 or 8, the distance between the two speakers may be the same as the distance between the two underspeakers, or wider than the distance between the two underspeakers.

[0100] In the display device according to aspect 10 of the present invention, in aspect 3 above, the speaker may be arranged at an angle with the upper edge, with the normal to the back of the display device as the axis of rotation.

[0101] In the display device according to embodiment 11 of the present invention, the speakers may also be arranged on the right and left sides of the peripheral area on the back side of the display device, as described in embodiment 3 above.

[0102] In the display device according to aspect 12 of the present invention, the speaker may be positioned at an angle with respect to the right and left sides, respectively, with the normal to the back of the display device as the axis of rotation.

[0103] In the display device according to embodiment 13 of the present invention, in embodiment 1 or 2 above, two underspeakers may be arranged on the lower edge of the peripheral portion on the back side of the display device, and the speakers may be arranged on the right edge and the left edge of the peripheral portion on the back side of the display device.

[0104] A television receiver according to aspect 14 of the present invention may include a display device as described in any of aspects 1 to 13.

[0105] The present invention is not limited to the embodiments described above, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment. [Explanation of Symbols]

[0106] 1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1j, 1k, 1m, 1n display device 10 speakers 11 Back Cabinet 12, 12a Net 13 panels 14 Guide Section 15 Sound emitting surface 16 tweeters 20 Underspeakers NL normal

Claims

1. A display device, The display device has two under-speakers, a right under-speaker and a left under-speaker, which are provided at equal intervals along the lower edge of the lower edge, with respect to the center in the left-right direction. The rear peripheral portion includes two speakers, a right speaker and a left speaker, positioned between the two under-speakers, at equal intervals along the upper edge such that the distance in the left-right direction is shorter than the distance in the left-right direction relative to the center in the left-right direction. The sound-emitting surfaces of the two speakers described above are positioned such that the normal to the sound-emitting surface is inclined toward the front side of the display device. The two speakers described above are positioned so that they emit sound directly from the upper edge of the rear periphery of the display device, diagonally upward and towards the front of the display device, thereby increasing the front-facing component of the sound emitted from the display device, and making it easier for direct sound from the two speakers to reach the front of the display device. The above-mentioned right under speaker and the above-mentioned right speaker are driven by the same signal and in phase using the audio signal for the right channel. The left under speaker and the left speaker are driven by the same signal and in phase using the audio signal for the left channel. A display device characterized by the following features.

2. The device further includes a panel with an opening that adjusts the sound emission effect of the two speakers mentioned above. The display device according to feature 1.

3. Tweeters are provided near the sound-emitting surfaces of the two speakers described above, the sound-emitting surfaces have a track shape, the tweeters also have a track shape, and the long axis of the tweeters is inclined with respect to the extension of the long side of the sound-emitting surface. The display device according to claim 1 or 2.

4. The above-mentioned tweeters are provided one near the sound-emitting surface of each of the two speakers, with the two speakers positioned between the two tweeters, and the two tweeters positioned between the two underspeakers. The display device according to feature 3.

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