Display device

Abstract

The present technology relates to a display device that can more reliably suppress the influence of heating. A display device is provided, including: a signal processing unit that processes an image signal and a sound signal; a plate-shaped panel unit that displays an image according to the image signal; and a vibration unit that is provided on the back side of the panel unit and causes the panel portion to vibrate in response to the sound signal, wherein the vibration unit has a plurality of vibrators, and the signal processing unit outputs the sound signal to a sound output vibrator of a vibrator that is an output target of the sound signal and a dispersed sound output vibrator of a vibrator that is a dispersed target of the sound signal among the plurality of vibrators. The present technology can be applied to, for example, a television receiver.

Description

Technical Field

[0001] The present technology relates to a display device, and particularly to a display device that makes it possible to suppress the influence of heat generation with higher certainty. Background Art

[0002] In recent years, the thickness and weight of displays have been decreasing. In addition, for speakers, the thickness and weight have also been decreasing, and it has been proposed to use a flat panel speaker (FPS: Flat Panel Speaker) instead of a cone speaker. In addition, it has been proposed to use a display panel as a vibration plate in a flat panel speaker.

[0003] In the display and speaker of the type described above, heat generation may have an influence on operation, and therefore a countermeasure to prevent heat generation is required. As a technology related to the countermeasure to prevent heat generation, for example, technologies disclosed in Patent Documents 1 to 3 are known.

[0004] Reference List

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Publication No. 2018-093469;

[0007] Patent document 2: Japanese Patent Publication No. 2017-187734;

[0008] Patent document 3: Japanese Patent Publication No. 2007-043452. Summary of the invention

[0009] Technical issues

[0010] However, the technology related to the above-mentioned countermeasure against heat generation is not sufficient as a countermeasure for a flat speaker using a display panel as a vibration plate, and it is necessary to surely suppress the influence of heat generation.

[0011] The present technology has been proposed in view of such circumstances as described above, and makes it possible to suppress the influence of heat generation with a higher degree of certainty.

[0012] Solution to the problem

[0013] A display device according to one aspect of the present technology is a display device comprising: a signal processing unit that processes an image signal and a sound signal; a plate-shaped panel unit that displays an image according to the image signal; and a vibration unit that is disposed on the back side of the panel unit and causes the panel unit to vibrate in response to the sound signal, wherein the vibration unit comprises a plurality of vibrators, and the signal processing unit outputs the sound signal not only to a sound output vibrator of a vibrator that is an output target of the sound signal among the plurality of vibrators, but also to a dispersed sound output vibrator of a vibrator that is a dispersed target of the sound signal.

[0014] In a display device of one aspect of the present technology, a signal processing unit is provided to process an image signal and a sound signal; a plate-shaped panel unit is provided to display an image according to the image signal; and a vibration unit is provided on the back side of the panel unit and causes the panel unit to vibrate in response to the sound signal. A plurality of vibrators are provided in the vibration unit, and the sound signal is output from the signal processing unit not only to a sound output vibrator of a vibrator as an output target of the sound signal among the plurality of vibrators, but also to a dispersed sound output vibrator of a vibrator as a dispersed target of the sound signal.

[0015] It should be noted that the display device of one aspect of the present technology may be an independent device, or may be an internal block configuring one device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a diagram depicting a configuration example of a side surface of a display device to which the present technology is applied.

[0017] Figure 2 is a diagram depicting a configuration example of the back side of a display device to which the present technology is applied.

[0018] Figure 3 Diagrams each depicting a configuration example of the back side of the display device when the rear chassis is removed are shown.

[0019] Figure 4 It is depicted along Figure 3 Schematic diagram of the configuration of a cross section taken along line YY.

[0020] Figure 5 is a diagram depicting an arrangement example of a vibrator provided on a display unit of a display panel.

[0021] Figure 6 is a diagram depicting a configuration example of a signal processing unit.

[0022] Figure 7 is a diagram depicting an example of screen multiplexing driving to which the present technology is applied.

[0023] Figure 8 is a diagram depicting the principle of the previous sound effect.

[0024] Fig. 9 is a diagram depicting an example of a diversifiable range.

[0025] Fig.10 : is a diagram depicting a first example of a control method of screen multiplexing drive to which the present technology is applied.

[0026] Fig.112 is a diagram depicting a second example of a control method of screen multiplexing drive to which the present technology is applied.

[0027] Fig.12 Shown are the respective depictions Fig.11 Schematic diagram of an example of the relationship between the input and output of a limiter and a gate.

[0028] Fig.13 3 is a diagram depicting a third example of a control method of screen multiplexing drive to which the present technology is applied.

[0029] Fig.14 Shown are the respective depictions Fig.13 Schematic diagram of an example of the relationship between the input and output of a limiter and a gate.

[0030] Fig.15 4 is a diagram depicting a fourth example of a control method of screen multiplexing drive to which the present technology is applied.

[0031] Fig.16 Shown are the respective depictions Fig.15 Schematic diagram of an example of the relationship between the input and output of a limiter and a gate. DETAILED DESCRIPTION

[0032] Hereinafter, embodiments of the present technology will be described with reference to the drawings. It should be noted that the description is given in the following order.

[0033] 1. Embodiments of the present technology

[0034] 2. Modification

[0035] <1. Embodiments of the present technology>

[0036] (Configuration example of display device)

[0037] Figure 1 A configuration example of a side surface of a display device 1 as a configuration example of an embodiment of a display device to which the present technology is applied is depicted. Figure 2 2 shows a configuration example of the back side of the display device 1.

[0038] The display device 1 is configured as a television receiver or the like. The display device 1 displays an image on an image display surface 10A, and outputs sound from the image display surface 10A. Specifically, the display device 1 has a built-in flat panel speaker.

[0039] The display device 1 includes a panel unit 10 that displays an image and also functions as a vibration plate, and a vibration unit 20 that is provided on the back surface of the panel unit 10 and vibrates the panel unit 10. The display device 1 also includes a signal processing unit 30 that controls the control unit 10 and the vibration unit 20, and a support unit 40 that supports the panel unit 10 thereon through a pivot unit 50.

[0040] The vibration unit 20 and the signal processing unit 30 are provided on the back side of the panel unit 10. The panel unit 10 has a rear cover 10R on its back side to protect the vibration unit 20 and the signal processing unit 30. The rear cover 10R includes a resin plate in the form of a metal plate or a plate, and is connected to the pivot unit 50.

[0041] Figure 3 10R is removed and the rear cover 10R is removed. Figure 3 , a circuit board 30A equivalent to the signal processing unit 30 is illustrated.

[0042] Figure 3 A depicts a configuration in the case where three vibrators 21 (21a, 21b, and 21c) are provided in the vibration unit 20, and Figure 4 Depicted along the Figure 3 An example of the configuration of a cross section taken along line YY of A. It should be noted that Figure 3 B depicts a configuration in the case where five vibrators 21 ( 21 a , 21 b , 21 c , 21 d , and 21 e ) are provided in the vibration unit 20 .

[0043] The panel unit 10 includes a display unit 11 in the form of a thin plate for displaying images, an inner plate 12 (opposing plate) disposed in an opposing relationship with the display unit 11 with an air gap 15 therebetween, and a rear chassis 13 .

[0044] The surface of the display unit 11 (the surface on the side opposite to the vibration unit 20 ) serves as an image display surface 10A. The panel unit 10 further includes a fixing member 14 between the display unit 11 and the inner plate 12 .

[0045] The fixing member 14 is provided along the outer edge of the display unit 11 , and has a function for fixing the display unit 11 and the inner panel 12 to each other and a function as a spacer for maintaining the air gap 15 .

[0046] The inner plate 12 is a plate that supports the vibrators 21a, 21b, and 21c. The inner plate 12 has openings for the vibrators at positions where the vibrators 21a, 21b, and 21c are to be mounted.

[0047] The rear chassis 13 has a higher rigidity than the inner panel 12, and has a function of suppressing deflection and vibration of the inner panel 12. In addition, the rear chassis 13 has an opening (an opening for a vibrator, etc.) at a position opposite to the opening of the inner panel 12. From the openings provided in the rear chassis 13, the opening provided at a position opposite to the opening for the vibrator has a size sufficient to allow the vibrators 21a, 21b, and 21c to be fitted therein.

[0048] The vibration unit 20 includes three vibrators 21a, 21b, and 21c. The vibrators 21a, 21b, and 21c have a configuration common to each other. When the display unit 11 is observed from the back side, the vibrator 21a is arranged at a relatively left position, the vibrator 21b is arranged at a relatively right position, and the vibrator 21c is arranged in the middle of the left-right direction. The vibrators 21a, 21b, and 21c are arranged in a row in the left and right directions of the display unit 11, and are arranged in a position higher than the middle in the upward and downward directions.

[0049] Each of the vibrators 21 a , 21 b , and 21 c includes, for example, a voice coil, a bobbin around which the voice coil is wound, and a magnetic circuit, and is an actuator of a speaker serving as a vibration source.

[0050] In each of the vibrators 21a, 21b, and 21c, if the sound current of the electric signal flows to the voice coil, a driving force is generated in the voice coil according to the principle of electromagnetic action. The driving force is transmitted to the display unit 11 through the vibration transmission member 24 described below, and the display unit 11 is vibrated according to the change of the sound current, so that the air vibrates and the sound pressure changes.

[0051] The vibration unit 20 further includes a fixing unit 23 and a vibration transmission member 24 for each of the vibrators 21a, 21b, and 21c. The fixing unit 23 has an opening 23a for fixing the vibrators 21a, 21b, and 21c in a state where the vibrators 21a, 21b, and 21c are assembled therein, and a plurality of threaded holes 23b for allowing screws used when the fixing unit 23 is fixed to the protrusion 12A to be assembled therein. The vibrators 21a, 21b, and 21c are fixed to the inner plate 12 by the fixing unit 23.

[0052] The vibration transmission member 24 is held in contact with, and fixed to, the back surface of the display unit 11 and the bobbins of the vibrators 21a, 21b, and 21c, for example. The vibration transmission member 24 includes a member having a repulsive property at least in a sound wave region (20 Hz or higher).

[0053] The panel unit 10 includes a damping member 16 between the display unit 11 and the inner plate 12. The damping member 16 serves to prevent vibrations generated in the display unit 11 by the vibrators 21a, 21b, and 21c from interfering with each other.

[0054] The panel unit 10 further includes an adhesive layer 18 or an adhesive layer 19 provided between the inner panel 12 and the rear chassis 13. The adhesive layer 18 or the adhesive layer 19 is a layer for fixing the inner panel 12 and the rear chassis 13 to each other.

[0055] It should be noted that although the foregoing description focuses on the configuration in which the three vibrators 21a, 21b, and 21c are provided in the vibration unit 20, in Figure 3 In the arrangement shown in B, the number and arrangement positions of the vibrators 21 to be arranged on the display unit 11 of the panel unit 10 which also functions as a vibration plate are optional, so that five vibrators 21a, 21b, 21c, 21d and 21e are arranged.

[0056] (Example of vibrator settings)

[0057] Figure 5 A disposition example of the vibrator 21 provided on the display unit 11 of the panel unit 10 is depicted.

[0058] Figure 5 Depicted is a case where the area of ​​the entire screen of the display unit 11 of the panel unit 10 is divided into 5×5 areas of the same size in the vertical direction and the horizontal direction and the vibrator 21 is provided in each divided area.

[0059] Hereinafter, each area of ​​the screen divided into 5×5 is referred to as a divided block 111. Figure 5 , for ease of description, numbers (1 to 5) and letters (A to E) corresponding to the numbers in the vertical and horizontal directions of the division blocks 111 are written in the left and upper areas of the screen of the panel unit 10. In addition, when writing each division block 111-ij, i represents a character in the horizontal direction, and j represents a number in the vertical direction.

[0060] In the panel unit 10 , for each of the 5×5 divided blocks 111 , a vibrator 21 indicated by a white circular mark (o) is provided at the center of the area, and a total of 25 vibrators 21 are provided.

[0061] If attention is paid to column A, in the divided block 111-A1, the vibrator 21-A1 is arranged at the center of the area. Similarly, in the divided blocks 111-A2 to 111-A5, the vibrators 21-A2 to 21-A5 are arranged at the centers of the respective areas.

[0062] If attention is paid to column B, vibrators 21-B1 to 21-B5 are respectively provided in divided blocks 111-B1 to 111-B5. Meanwhile, if attention is paid to column C, vibrators 21-C1 to 21-C5 are respectively provided at the center of each area in divided blocks 111-C1 to 111-C5.

[0063] If we focus on column D, in divided blocks 111-D1 to 111-D5, vibrators 21-D1 to 21-D5 are respectively set at the center of the area. In addition, if we focus on column E, in divided blocks 111-E1 to 111-E5, vibrators 21-E1 to 21-E5 are respectively set at the center of each area.

[0064] (Configuration example of signal processing unit)

[0065] Figure 6 Depicts ready for use Figure 5 1 is a configuration example of the signal processing unit 30 of the 5×5 divided block 111 (in which 5×5 vibrators 21 are provided).

[0066] refer to Figure 6 The signal processing unit 30 includes a tuner 31 , an image decoder 32 , an image processing unit 33 , a sound decoder 34 , and a sound processing unit 35 .

[0067] The tuner 31 processes a broadcast signal received by a receiving antenna (not shown) to extract a broadcast stream according to a channel selected by a user. The tuner 31 outputs an image stream and a sound stream within the extracted broadcast stream to the image decoder 32 and the sound decoder 34, respectively.

[0068] The image decoder 32 performs decoding processing on the image stream input from the tuner 31 , and outputs an image signal obtained as a result of the processing to the image processing unit 33 .

[0069] The image processing unit 33 includes a panel driver, and drives the panel unit 10 (the display unit 11 of the panel unit 10) based on the image signal input from the image decoder 32. Thus, an image according to the image signal is displayed on the panel unit 10.

[0070] The sound decoder 34 performs decoding processing on the sound stream input from the tuner 31 , and outputs a sound signal obtained as a result of the processing to the sound processing unit 35 .

[0071] The sound processing unit 35 performs predetermined signal processing on the sound signal input from the sound decoder 34. The sound processing unit 35 generates a signal to be output to the 5×5 divided blocks 111 ( Figure 5 )A sound signal of each of the 5×5 vibrators 21 that are individually set.

[0072] The sound processing unit 35 includes a signal processing unit 36, a matrix 37, and an amplifier 38. A plurality of signal processing units 36 and amplifiers 38 are provided corresponding to the vibrators 21 provided individually for the 5×5 divided blocks 111. It should be noted that the details of the signal processing performed by the signal processing unit 36 ​​and the matrix 37 in the sound processing unit 35 are described below.

[0073] The signal processing unit 36 ​​includes signal processing units 36-A1 to 36-A5, 36-B1 to 36-B5, 36-C1 to 36-C5, 36-D1 to 36-D5, and 36-E1 to 36-E5. The amplifier 38 includes amplifiers 38-A1 to 38-A5, 38-B1 to 38-B5, 38-C1 to 38-C5, 38-D1 to 38-D5, and 38-E1 to 38-E5.

[0074] It should be noted that in the following description, the sound signal corresponding to the vibrator 21-A1 is referred to as the sound signal A1. Similarly, the sound signals corresponding to the vibrators 21-A2 to 21-A5, 21-B1 to 21-B5, 21-C1 to 21-C5, 21-D1 to 21-D5, and 21-E1 to 21-E5 are referred to as the sound signals A2 to A5, B1 to B5, C1 to C5, D1 to D5, and E1 to E5, respectively.

[0075] The sound processing unit 35 amplifies the sound signal A1 generated by the signal processing unit 36 ​​and the matrix 37 with the amplifier 38-A1, and outputs the amplified sound signal A1 to the vibrator 21-A1 to drive the vibrator 21-A1. In addition, the sound processing unit 35 amplifies the sound signals A2 to A5 generated by the signal processing unit 36 ​​and the matrix 37 with the amplifiers 38-A2 to 38-A5, and outputs the amplified sound signals A2 to A5 to drive the vibrators 21-A2 to 21-A5 respectively.

[0076] Similarly, the sound processing unit 35 amplifies the sound signals B1 to B5 generated by the signal processing unit 36 ​​and the matrix 37 with amplifiers 38-B1 to 38-B5, and outputs the amplified sound signals B1 to B5 to drive the vibrators 21-B1 to 21-B5, respectively. In addition, the sound processing unit 35 amplifies the sound signals C1 to C5 generated by the signal processing unit 36 ​​and the matrix 37 with amplifiers 38-C1 to 38-C5, and outputs the amplified sound signals C1 to C5 to drive the vibrators 21-C1 to 21-C5, respectively.

[0077] Similarly, the sound processing unit 35 amplifies the sound signals D1 to D5 generated by the signal processing unit 36 ​​and the matrix 37 with amplifiers 38-D1 to 38-D5, and outputs the amplified sound signals D1 to D5 to drive the vibrators 21-D1 to 21-D5, respectively. In addition, the sound processing unit 35 amplifies the sound signals E1 to E5 generated by the signal processing unit 36 ​​and the matrix 37 with amplifiers 38-E1 to 38-E5, and outputs the amplified sound signals E1 to E5 to drive the vibrators 21-E1 to 21-E5, respectively.

[0078] The display device 1 is configured in such a manner as described above.

[0079] (Example of screen multiplexing driver)

[0080] Now, the details of the screen multiplexing drive to which the present technology is applied are described.

[0081] In the picture multiplexing drive applying the present technology, not only the vibrator 21 of the output target corresponding to the position of the sound source (hereinafter, referred to as the sound output vibrator) is vibrated, but also the sound signal is dispersed to another vibrator 21 of the dispersed target (hereinafter, also referred to as the dispersed sound output vibrator) to make the vibrator 21 vibrate so that the heat generated by the sound output vibrator is dispersed to the dispersed sound output vibrator.

[0082] Specifically, in the display device 1, if only the vibrator 21 (sound output vibrator) corresponding to the position of the sound source is vibrated, the vibrator 21 generates heat, and the heat may have an impact on the picture quality of the image to be displayed on the display unit 11 of the panel unit 10 which also serves as a vibration plate.

[0083] Therefore, in the screen multiplexing drive applying the present technology, the sound signal is dispersed to and reproduced by another vibrator 21 (dispersed sound output vibrator) in the surrounding area of ​​the vibrator 21 set at the position corresponding to the sound source (sound output vibrator), thereby performing heat dissipation, so that the influence of heat on the picture quality of the image to be displayed on the display unit 11 is reduced.

[0084] Furthermore, if the sound signal is uniformly dispersed to other vibrators 21 (dispersed sound output vibrators) provided in the surrounding area or the like, the position of the sound source is divided, resulting in impairment of localization.

[0085] In the picture multiplexing drive to which the present technology is applied, the sound signal to be dispersed to other vibrators 21 (i.e., dispersed to the dispersed sound output vibrators other than the desired output sound vibrator) in the surrounding area of ​​the vibrator 21 set at the position corresponding to the sound source is delayed so that the positioning is improved by the preceding sound effect. In short, even in the case where the sound signal is dispersed to the dispersed sound output vibrators and reproduced by the dispersed sound output vibrators, the positioning of the sound output position can be prevented from being impaired due to the preceding sound effect.

[0086] Figure 7 An example of screen multiplexing driving to which the present technology is applied is described.

[0087] exist Figure 7In the embodiment, from the 5×5 divided block 111 on the screen of the display unit 11 of the panel unit 10, the vibrator 21-D4 set in the divided block 111-D4 is determined as a sound output vibrator, and the eight vibrators 21 (21-C3, 21-C4, 21-C5, 21-D3, 21-D5, 21-E3, 21-E4 and 21-E5) set around the vibrator 21-D4 are determined as dispersed sound output vibrators.

[0088] Here, the sound signal is reproduced not only from the vibrator 21-D4 corresponding to the position of the sound source (the center position of the sound), but also from the eight vibrators 21 disposed in the surrounding area of ​​the vibrator 21-D4 in a dispersed manner ( Figure 7 ” in “sound output 0.75”). Therefore, heat dissipation is performed by the heat generation of the vibrator 21, and the influence of heat on the picture quality of the image to be displayed on the display unit 11 is reduced.

[0089] Furthermore, at this time, in the eight vibrators 21 provided in the surrounding area of ​​the vibrator 21-D4, the scattered sound signals have undergone delay ( Figure 7 ), preventing the positioning of the sound output position from being impaired by previous sound effects. Figure 8 Describes the principles of previous sound effects.

[0090] The preceding sound effect is an effect in which, when a certain sound is generated and the sound is generated from a different position after a delay of about several ms to several tens of ms (e.g., about 1 ms to 30 ms), a single sound is perceived to be emitted from the position of the preceding sound. This preceding sound effect is also called the Haas effect.

[0091] refer to Figure 8 , assuming a case where the speakers SP-A and SP-B are set one by one to the left and right relative to the user (user). In this case, when the same sound is emitted from the left speaker SP-A and the right speaker SP-B at equal volume, the user feels that the sound comes from the virtual image SP-C at the middle position between the setting positions of the speakers SP-A and SP-B.

[0092] On the other hand, it is assumed that the setting position of the right speaker SP-B moves from the position of the speaker SP-B to the position of the speaker SP-B' with respect to the user. In this case, when the same sound is emitted from the left speaker SP-A and the right speaker SP-B' at the same volume, because the sound from the left speaker SP-A arrives first, the user hears only the sound from the left speaker SP-A, and the user feels that even the sound actually emitted from the right speaker SP-B' is heard from the left.

[0093] It should be noted that although Figure 7 In the example of , the dispersed sound output vibrator is the vibrator 21 in the surrounding area of ​​the sound output vibrator, but the dispersed sound output vibrator may also be a vibrator 21 other than the vibrator in the surrounding area of ​​the sound output vibrator. However, in the case where the vibrator 21 in the surrounding area of ​​the sound output vibrator (the nearest surrounding vibrator 21) is selected as the vibrator 21 used as the dispersed sound output vibrator, improved sound quality is obtained compared to the alternative case of selecting a vibrator 21 other than the vibrator 21 in the surrounding area of ​​the sound output vibrator.

[0094] Fig. 9 An example of a dispersible range in a case where the vibrators 21 adjacent to each other are spaced apart from each other by a predetermined distance is depicted. Fig. 9 , where the horizontal axis is the reproduction frequency (Hz) of the sound signal and the vertical axis is the distance (cm) between the vibrators 21, the dispersible range when the distance between the adjacent vibrators 21 is 34 cm is represented by the broken line L.

[0095] The broken line L indicates that when the reproduction frequency is higher than a predetermined frequency (for example, 500 Hz or higher), it is necessary to ensure the sound quality by using the vibrator 21 in the surrounding area of ​​the sound output vibrator (for example, within a range of 34 cm) as a dispersed sound output vibrator that outputs sound in a dispersed manner.

[0096] Specifically, in the case where vibrator 21-D4 is a sound output vibrator (reference), when the reproduction frequency is 500Hz, the dispersed range is 34cm, and therefore vibrators 21-C4, 21-D3, 21-D5, 21-E4, etc. set in the surrounding area of ​​the reference setting position can be determined as dispersed sound output vibrators.

[0097] On the other hand, the broken line L indicates that in the case where the reproduction frequency is a frequency lower than a predetermined frequency (for example, 125 Hz or lower), even if the vibrator 21 other than the vibrator 21 in the surrounding area of ​​the sound output vibrator is used as a dispersed sound output vibrator so that the sound is output in a dispersed manner to a wider range (for example, within a range of 136 cm), deterioration in sound quality is less likely to occur.

[0098] Specifically, in the case where vibrator 21-D4 is determined as a sound output vibrator (reference), when the reproduction frequency is 200 Hz, the dispersed range is 84 cm, and therefore, in addition to the vibrator 21 set in the surrounding area of ​​the reference setting position, the vibrator 21 set in a wider range (such as vibrator 21-B4 and vibrator 21-D2) can be used as a dispersed sound output vibrator.

[0099] In this way, since the dispersible range of the sound output vibrator changes in response to the reproduction frequency of the sound signal, the dispersive sound output vibrator is selected according to the dispersible range. It should be noted that as a target of the dispersible range, for example, in the case where the reproduction frequency is expressed in wavelength, the dispersive output can be performed within half the wavelength.

[0100] (First example)

[0101] Now, as an example of a control method of screen multiplexing drive to which the present technology is applied, refer to Fig.10 Describes simple partitioning control.

[0102] Fig.10 The sound processing unit 35 ( Figure 6 ) is a configuration of a signal processing unit 36 ​​and a matrix 37. The signal processing unit 36 ​​includes a delay 301 and an amplifier 302. The matrix 37 includes an adder 303.

[0103] Specifically, refer to Fig.10 , the signal processing unit 36 ​​and the matrix 37 generate sound signals A1, A2, B1 and B2 to be output to the vibrators 21-A1, 21-A2, 21-B1 and 21-B2 provided for the 2×2 divided blocks 111-A1, 111-A2, 111-B1 and 111-B2, respectively.

[0104] It should be noted that although for simplicity of description, Fig.10 The configuration is a case where a sound signal is output to the vibrator 21 provided in each of the 2×2 division blocks 111, but similar processing can also be applied to the case of the 5×5 division blocks 111 described above, etc.

[0105] In the signal processing unit 36 ​​-A1 , the sound signal A1 input thereto is input to the amplifier 302 -A1 - 1 and delays 301 -A1 - 1 to 301 -A1 - 3 , respectively.

[0106] The amplifier 302-A1-1 amplifies the sound signal A1 input thereto at a specified gain (0.4), and outputs the amplified sound signal A1 to the adder 303-A1.

[0107] The delayer 301-A1-1 delays the sound signal A1 input thereto by a predetermined delay amount, and outputs the delayed sound signal A1 to the amplifier 302-A1-2. The amplifier 302-A1-2 amplifies the sound signal A1 input thereto from the delayer 301-A1-1 with a specified gain (0.2), and outputs the amplified sound signal A1 to the adder 303-A2.

[0108] The delayer 301-A1-2 delays the sound signal A1 input thereto by a predetermined delay amount, and outputs the delayed sound signal A1 to the amplifier 302-A1-3. The amplifier 302-A1-3 amplifies the sound signal A1 input thereto from the delayer 301-A1-2 with a specified gain (0.2), and outputs the amplified sound signal A1 to the adder 303-B1.

[0109] The delayer 303-A1-3 delays the sound signal A1 input thereto by a predetermined delay amount, and outputs the delayed sound signal A1 to the amplifier 302-A1-4. The amplifier 302-A1-4 amplifies the sound signal A1 input thereto from the delayer 303-A1-3 with a specified gain (0.2), and outputs the amplified sound signal A1 to the adder 303-B2.

[0110] Specifically, the signal processing unit 36-A1 multiplies the sound signal A1 input therein by a gain to classify the sound signal A1 with a predetermined sound pressure level (volume), so that the sound signal A1 is output not only to the vibrator 21-A1, but also to the vibrators 21-A2, 21-B1 and 21-B2. In addition, at this time, the sound signal A1 to be output to the vibrators 21-A2, 21-B1 and 21-B2 is delayed, thereby realizing the previous sound effect.

[0111] In the signal processing unit 36 ​​-A2 , the sound signal A2 input thereto is input to the amplifier 302 -A2 - 1 and delays 301 -A2 - 1 to 301 -A2 - 3 .

[0112] The delayers 301-A2-1 to 301-A2-3 and the amplifiers 302-A2-1 to 302-A2-4 perform signal processing for delaying or amplifying the sound signal A2 input thereto. Then, the sound signal A2 from the amplifiers 302-A2-1 to 302-A2-4 is output to the adders 303-A2, 303-A1, 303-B1 and 303-B2, respectively.

[0113] Specifically, the signal processing unit 36-A2 classifies the sound signal A2 input thereto with a predetermined sound pressure level so as to be output not only to the vibrator 21-A2 but also to the vibrators 21-A1, 21-B1, and 21-B2 after a delay.

[0114] In the signal processing unit 36 ​​- B1 , the sound signal B1 input thereto is input to the amplifier 302 - B1 - 1 and delays 301 - B1 - 1 to 301 - B1 - 3 .

[0115] The delayers 301-B1-1 to 301-B1-3 and the amplifiers 302-B1-1 to 302-B1-4 perform signal processing for delaying or amplifying the sound signal B1 input thereto. Then, the sound signal B1 from the amplifiers 302-B1-1 to 302-B1-4 is output to the adders 303-B1, 303-A1, 303-A2 and 303-B2, respectively.

[0116] Specifically, the signal processing unit 36 ​​- B1 classifies the sound signal B1 input thereto at a predetermined sound pressure level so as to be output not only to the vibrator 21 - B1 but also to the vibrators 21 - A1 , 21 - A2 , and 21 - B2 after a delay.

[0117] In the signal processing unit 36 ​​- B2 , the sound signal B2 input thereto is input to the amplifier 302 - B2 - 1 and delays 301 - B2 - 1 to 301 - B2 - 3 , respectively.

[0118] The delayers 301-B2-1 to 301-B2-3 and the amplifiers 302-B2-1 to 302-B2-4 perform signal processing for delaying or amplifying the sound signal B2 input thereto. Then, the sound signal B2 from the amplifiers 302-B2-1 to 302-B2-4 is output to the adders 303-B2, 303-B1, 303-A2 and 303-A1, respectively.

[0119] Specifically, the signal processing unit 36-B2 classifies the sound signal B2 input thereto at a predetermined sound pressure level so as to be output not only to the vibrator 21-B2 but also to the vibrators 21-A1, 21-A2 and 21-B1 respectively after a delay.

[0120] The sound signal A1 from the amplifier 302-A1-1, the sound signal A2 from the amplifier 302-A2-2, the sound signal B1 from the amplifier 302-B1-2, and the sound signal B2 from the amplifier 302-B2-4 are input to the adder 303-A1.

[0121] Adder 303-A1 adds sound signals A1, A2, B1 and B2 input therein and outputs the sum signal as sound signal A1. In short, in the sound signal A1 output to vibrator 21-A1, delayed sound signals A2, B1 and B2 are added to the input sound signal A1 in terms of sound pressure.

[0122] Adder 303-A2 adds sound signal A1 from amplifier 302-A1-2, sound signal A2 from amplifier 302-A2-1, sound signal B1 from amplifier 302-B1-3, and sound signal B2 from amplifier 302-B2-3 input thereto, and outputs the result of the addition as sound signal A2. In sound signal A2, delayed sound signals A1, B1, and B2 are added to input sound signal A2 in sound pressure.

[0123] Adder 303-B1 adds sound signal A1 from amplifier 302-A1-3, sound signal A2 from amplifier 302-A2-3, sound signal B1 from amplifier 302-B1-1, and sound signal B2 from amplifier 302-B2-2 input thereto, and outputs the result of the addition as sound signal B1. In sound signal B1, delayed sound signals A1, A2, and B2 are added to input sound signal B1 in sound pressure.

[0124] Adder 303-B2 adds the sound signal A1 from amplifier 302-A1-4, the sound signal A2 from amplifier 302-A2-4, the sound signal B1 from amplifier 302-B1-4, and the sound signal B2 from amplifier 302-B2-1 input thereto, and outputs the result of the addition as sound signal B2. In sound signal B2, delayed sound signals A1, A2, and B1 are added to the input sound signal B2 in terms of sound pressure.

[0125] The sound signals A1, A2, B1, and B2 output in this manner are input to amplifiers 38-A1, 38-A2, 38-B1, and 38-B2, respectively, and are output to vibrators 21-A1, 21-A2, 21-B1, and 21-B2, respectively.

[0126] As described above, in the simple division control, each of the sound signals A1, A2, B1, and B2 output to the vibrators 21-A1, 21-A2, 21-B1, and 21-B2 is controlled to include the sound pressure level of the delayed other sound signals. Therefore, since the sound signals are reproduced in a dispersed manner, heat dissipation is achieved, and the influence of heat on the picture quality of the image to be displayed on the display unit 11 can be reduced. In addition, since the other sound signals are delayed, the previous sound effect is achieved, and the positioning of the sound output position is not impaired.

[0127] (Second example)

[0128] Now, refer to Fig.11 and Fig.12 , dynamic division control is described as an example of a control method of screen multiplexing drive.

[0129] Fig.11 The sound processing unit 35 ( Figure 6 ) in the signal processing unit 36 ​​and the matrix 37. Fig.10 Compared with the simple partition control configuration, it is ready for Fig.11 The configuration of the dynamic division control includes a limiter 311 and a gate 312 instead of the amplifier 302 .

[0130] exist Fig.11 In the example, limiters 311-A1, 311-A2, 311-B1 and 311-B2 are set to replace Fig.10 Amplifiers 302-A1-1, 302-A2-1, 302-B1-1 and 302-B2-1.

[0131] In addition, Fig.11 In the embodiment, gate electrodes 312-A1-1 to 312-A1-3, 312-A2-1 to 312-A2-3, 312-B1-1 to 312-B1-3 and 312-B2-1 to 312-B2-3 are provided to replace Fig.10 Amplifiers 302-A1-2 to 302-A1-4, 302-A2-2 to 302-A2-4, 302-B1-2 to 302-B1-4 and 302-B2-2 to 302-B2-4.

[0132] The limiter 311 -A1 performs limiter processing on the sound signal A1 input thereto, and outputs the sound signal A1 obtained as a result of the limiter processing to the adder 303 -A1.

[0133] Here, Fig.12 A depicts an example of the relationship between input and output when a limiter process is performed. Fig.12 In A, when the horizontal axis represents the input of the limiter 311 and the vertical axis represents the output of the limiter 311, the relationship between the input and the output is represented by the broken line L L1 express.

[0134] exist Fig.12 In A, the maximum value of the sound pressure level (volume) is limited to a predetermined value (0.4) by the limiter processing, and although the input and output are equal until the input becomes 0.4, if the input becomes equal to or higher than 0.4, the output is limited to 0.4 and is limited to the same sound pressure level.

[0135] It should be noted that although the limiter processing is described here, a compressor processing that compresses the sound pressure level so as to become unequal to or higher than a predetermined value may be performed. Specifically, in the compressor processing, when the sound pressure level is equal to or lower than a predetermined value, sound pressure reduction is not performed, but for a sound signal having a sound pressure level equal to or higher than a predetermined value, suppression control is performed so that the sound pressure level of the sound signal becomes unequal to or higher than the predetermined value.

[0136] Return to reference Fig.11 As described above, limiters 311-A2, 311-B1, and 311-B2 respectively perform limiter processing on sound signals A2, B1, and B2 similarly to limiter 311-A1, and output the resulting sound signals A2, B1, and B2 to adders 303-A2, 303-B1, and 303-B2, respectively.

[0137] The gate 312 - A1 - 1 performs gate processing on the sound signal A1 input from the delay device 301 - A1 - 1 , and outputs the sound signal A1 obtained as a result of the gate processing to the adder 303 - A2 .

[0138] Here, Fig.12 B depicts an example of the relationship between input and output when gate processing is performed. Fig.12 In B, when the horizontal axis represents the input to the gate 312 and the vertical axis represents the output from the gate 312, the relationship between the input and the output is represented by the broken line L G1 express.

[0139] exist Fig.12 In B, the gate processing does not pass the sound pressure level (volume) equal to or lower than the predetermined value, and when the input becomes equal to or higher than 0.4, the sound pressure level is output, and if the input becomes 1.0, the output becomes 0.2. It should be noted that although the gate processing is described here, the expander processing of reducing the sound pressure level to equal to or lower than the predetermined value may also be performed.

[0140] Return to reference Fig.11 , similar to the gate 312-A1-1, the gates 312-A1-2 and 312-A1-3 perform gate processing on the sound signal A1 input from the delayers 301-A1-2 and 301-A1-3, respectively, and output the resulting sound signal A1 to the adders 303-B1 and 303-B2, respectively.

[0141] The gates 312-A2-1 to 312-A2-3 perform gate processing on the sound signals A2 input from the delay devices 301-A2-1 to 301-A2-3, respectively, and output the resultant sound signals A2 to the adders 303-A1, 303-B1, and 303-B2, respectively.

[0142] The gates 312-B1-1 to 312-B1-3 perform gate processing on the sound signals B1 input from the delay devices 301-B1-1 to 301-B1-3, respectively, and output the resultant sound signals B1 to the adders 303-A1, 303-A2, and 303-B2, respectively.

[0143] The gates 312-B2-1 to 312-B2-3 perform gate processing on the sound signals B2 input from the delay devices 301-B2-1 to 301-B2-3, respectively, and output the resultant sound signals B2 to the adders 303-A1, 303-A2, and 303-B1, respectively.

[0144] The adder 303-A1 adds the sound signal A1 from the limiter 311-A1, the sound signal A2 from the gate 312-A2-1, the sound signal B1 from the gate 312-B1-1 and the sound signal B2 from the gate 312-B2-3 input thereto, and outputs the added result as the sound signal A1.

[0145] Adder 303-A2 adds sound signal A1 from gate 312-A1-1, sound signal A2 from limiter 311-A2, sound signal B1 from gate 312-B1-2, and sound signal B2 from gate 312-B2-2 input thereto, and outputs the result of the addition as sound signal A2.

[0146] The adder 303-B1 adds the sound signal A1 from the gate 312-A1-2, the sound signal A2 from the gate 312-A2-2, the sound signal B1 from the limiter 311-B1 and the sound signal B2 from the gate 312-B2-1 input thereto, and outputs the added result as the sound signal B1.

[0147] The adder 303-B2 adds the sound signal A1 from the gate 312-A1-3, the sound signal A2 from the gate 312-A2-3, the sound signal B1 from the gate 312-B1-3, and the sound signal B2 from the limiter 311-B2, and outputs the added result as the sound signal B2.

[0148] The sound signals A1, A2, B1, and B2 output in this manner are output to the vibrators 21-A1, 21-A2, 21-B1, and 21-B2, respectively.

[0149] As described above, in the dynamic division control, each of the sound signals A1, A2, B1, and B2 to be output to the vibrators 21-A1, 21-A2, 21-B1, and 21-B2 is controlled by the limiter processing and the gate processing so that the sound pressure level of other sound signals including the delay is reduced. Therefore, since the sound signals are reproduced in a dispersed manner, heat dissipation is achieved, and the influence of heat on the picture quality of the image to be displayed on the display unit 11 can be reduced. In addition, since the other sound signals have been delayed, the previous sound effect is achieved, and the positioning of the sound output position is not impaired.

[0150] (Third Example)

[0151] Now, refer to Fig.13 and Fig.14 , control of maximum output suppression in consideration of balance priority when performing dynamic division control is described as an example of a control method of screen multiplexing driving.

[0152] Fig.13 The sound processing unit 35 ( Figure 6 ) in the configuration of the signal processing unit 36 ​​and the matrix 37. Fig.11 Compared with the configuration of dynamic partition control, the Fig.13 The configuration of the dynamic division control includes the delayer 301 , the adder 303 , the limiter 311 , and the gate 312 of similar configurations, but newly includes a limiter 321 provided at the next stage of the adder 303 .

[0153] It should be noted that Fig.14 An example of the limiter processing performed by the limiters 311 and 321 and the gate processing performed by the gate 312 is shown in A and B of FIG. Here, instead of the limiter processing, the compressor processing may be performed. In addition, instead of the gate processing, the expander processing may be performed.

[0154] exist Fig.13 In FIG. 1 , limiters 321 -A1 , 321 -A2 , 321 -B1 , and 321 -B2 are respectively provided at the subsequent stages of adders 303 -A1 , 303 -A2 , 303 -B1 , and 303 -B2 .

[0155] The limiter 321-A1 performs limiter processing on the sound signal A1 input from the adder 303-A1, and outputs the sound signal A1 obtained as a result of the limiter processing. Through this limiter processing, the maximum output of the sound signal A1 is suppressed.

[0156] Similar to the limiter 321-A1, the limiters 321-A2, 321-B1 and 321-B2 respectively perform limiter processing on the sound signals A2, B1 and B2 input from the adders 303-A2, 303-B1 and 303-B2. By the limiter processing, the maximum output of the sound signals A2, B1 and B2 is suppressed.

[0157] As described above, in the dynamic division control of the maximum output suppression considering the priority of balance, the maximum output of the sound signal to be output is suppressed by the limiter 321 set at the next stage of the adder 303 of each channel. At this time, in each channel, since the sound signal of the own channel is limited by the limiter 311, it is considered that the balance of the sound signal of the channel is prioritized.

[0158] (Fourth Example)

[0159] Finally, reference Fig.15 and Fig.16 , control of maximum output suppression taking into account the priority of the own channel when performing dynamic division control is described as an example of a control method of picture multiplexing driving.

[0160] Fig.15 The sound processing unit 35 ( Figure 6 ) in the configuration of the signal processing unit 36 ​​and the matrix 37. Fig.11 Compared with the configuration of dynamic partition control, the Fig.15 The configuration of the dynamic division control includes the delayer 301, the adder 303, and the gate 312 of similar configurations, but includes a limiter 321 provided at the next stage of the adder 303 while removing the limiter 311.

[0161] It should be noted that Fig.16 An example of the limiter process performed by the limiter 321 and the gate process performed by the gate 312 is shown in A and B of FIG. Here, instead of the limiter process, a compressor process may be performed. Furthermore, instead of the gate process, an expander process may be performed.

[0162] The adder 303-A1 adds the sound signal A1 inputted thereto from the outside, the sound signal A2 from the gate 312-A2-1, the sound signal B1 from the gate 312-B1-1 and the sound signal B2 from the gate 312-B2-3, and outputs the added result to the limiter 321-A1.

[0163] The limiter 321-A1 performs limiter processing on the sound signal A1 input from the adder 303-A1, and outputs the sound signal A1 obtained as a result of the limiter processing. Through this limiter processing, the maximum output of the sound signal A1 is suppressed.

[0164] The adder 303-A2 adds the sound signal A1 from the gate 312-A1-1, the sound signal A2 input from the outside, the sound signal B1 from the gate 312-B1-2, and the sound signal B2 from the gate 312-B2-2, and outputs the added result to the limiter 321-A2.

[0165] The limiter 321-A2 performs limiter processing on the sound signal A2 from the adder 303-A2, and outputs the sound signal A2 obtained as a result of the limiter processing. By this limiter processing, the maximum output of the sound signal A2 is suppressed.

[0166] The adder 303-B1 adds the sound signal A1 from the gate 312-A1-2, the sound signal A2 from the gate 312-A2-2, the sound signal B1 input from the outside, and the sound signal B2 from the gate 312-B2-1, and outputs the addition result to the limiter 321-B1.

[0167] The limiter 321-B1 performs limiter processing on the sound signal B1 from the adder 303-B1, and outputs the sound signal B1 obtained as a result of the limiter processing. By this limiter processing, the maximum output of the sound signal B1 is suppressed.

[0168] The adder 303-B2 adds the sound signal A1 from the gate 312-A1-3, the sound signal A2 from the gate 312-A2-3, the sound signal B1 from the gate 312-B1-3, and the sound signal B2 input from the outside, and outputs the addition result to the limiter 321-B2.

[0169] The limiter 321-B2 performs limiter processing on the sound signal B2 from the adder 303-B2, and outputs the sound signal B2 obtained as a result of the limiter processing. By this limiter processing, the maximum output of the sound signal B2 is suppressed.

[0170] As described above, in the dynamic division control of the maximum output suppression considering the priority of the own channel, the maximum output of the sound signal to be output is suppressed by the limiter 321 set in the next stage of the adder 303 of each channel. At this time, since the sound signal of the own channel is not in a limited state in each channel, it is considered that the sound signal of the own channel is prioritized.

[0171] <2. Modification>

[0172] It should be noted that since a vibrator 21 has a limitation on the sound pressure that can be output, in the event that a certain vibrator 21 does not obtain sufficient output sound pressure, the present technology can be utilized separately from the heating problem of the above-mentioned vibrator 21 to increase the output sound pressure so that the sound signal is dispersed to the vibrator 21 in the surrounding area (or an area other than the surrounding area).

[0173] In addition, although the foregoing description describes that the vibrator 21 as an actuator of a speaker used as a vibration source includes a voice coil, and if a sound current of an electrical signal flows to the voice coil, a driving force is generated in the voice coil according to the principle of electromagnetic action, the vibrator 21 is not limited to the voice coil, but can be configured using another actuator such as a voltage actuator.

[0174] Likewise, in the case of using another actuator, it is assumed that the heat generated by the other actuator may have an influence on the operation. However, by applying the present technology, the influence of such heat generation can be suppressed.

[0175] Although the foregoing description illustrates a case where the display device 1 is a television receiver, the display device 1 is not limited thereto and may be an electronic device such as a personal computer, a tablet terminal, a smartphone, a portable telephone, a game console, or a display device. In addition, the display device 1 may be a digital signage, a medical monitor, a commercial monitor (professional monitor) for a broadcasting station, a car display, or the like.

[0176] In addition, in the display device 1, as the panel unit 10, an organic light emitting diode (OLED) display unit in which pixels each including a self-luminous element are two-dimensionally arranged on a display panel, a liquid crystal light emitting diode (CLED) display unit in which LEDs are used for pixels, a liquid crystal display unit in which pixels each including a liquid crystal element and a thin film transistor (TFT) element are two-dimensionally arranged in a display panel, etc. can be used.

[0177] In addition, a communication circuit (communication module) prepared for a predetermined communication method, a high-definition multimedia interface (registered trademark) (HDMI), an interface conforming to a predetermined standard such as a universal serial bus (USB) may be provided in the display device 1. Thus, in the display device 1, not only broadcast contents received through the tuner 31 but also communication contents streamed and distributed by a motion video distribution service (OTT (Over The Top) service, etc.) through a communication network such as the Internet or recorded contents recorded by a recorder (recording and reproducing machine) are reproduced.

[0178] also, Figure 6The signal processing unit 30 or the sound processing unit 35 may be configured as an independent device as a signal processing device. At this time, the signal processing device may be configured to not include a part of the components such as the tuner 31, the image decoder 32 or the sound decoder 34, or may be configured to include other components.

[0179] It should be noted that the embodiments of the present technology are not limited to the embodiments described above and may be changed in various ways without departing from the scope and spirit of the present technology.

[0180] Furthermore, the present technology can take the configurations described below.

[0181] (1) A display device comprising:

[0182] A signal processing unit, processing image signals and sound signals;

[0183] a plate-shaped panel unit that displays an image according to an image signal; and

[0184] a vibration unit disposed on the back side of the panel unit and causing the panel unit to vibrate in response to a sound signal, wherein

[0185] The vibration unit includes a plurality of vibrators, and

[0186] The signal processing unit outputs the sound signal not only to the sound output vibrator of the vibrator which is the output target of the sound signal among the plurality of vibrators but also to the dispersed sound output vibrators of the vibrators which are the dispersed targets of the sound signal.

[0187] (2) A display device according to (1) above, wherein:

[0188] The signal processing unit delays the sound signal to be output to the dispersed sound output vibrator relative to the sound signal to be output to the sound output vibrator.

[0189] (3) A display device according to (1) or (2) above, wherein:

[0190] Each vibrator of the vibration unit is provided for each predetermined area of ​​the panel unit.

[0191] (4) A display device according to (3) above, wherein:

[0192] With reference to the setting position of the sound output vibrator, the dispersion sound output vibrator is set within a dispersible range according to the reproduction frequency of the sound signal.

[0193] (5) A display device according to (4) above, wherein:

[0194] In the case where the reproduction frequency is a frequency higher than a predetermined frequency, a vibrator provided in a surrounding area of ​​the sound output vibrator is included in the scattered sound output vibrator, and

[0195] In the case where the reproduction frequency is a frequency lower than a predetermined frequency, a vibrator provided in an area other than a surrounding area of ​​the sound outputting vibrator is included in the scattered sound outputting vibrator.

[0196] (6) A display device according to (3) above, wherein:

[0197] The dispersed sound output vibrator includes a vibrator provided in a surrounding area of ​​the sound output vibrator.

[0198] (7) A display device according to (2) above, wherein:

[0199] The signal processing unit includes:

[0200] a first amplifier that amplifies a first sound signal to be output to the sound output vibrator at a first gain,

[0201] a delay device for delaying a first sound signal to be output to the dispersed sound output vibrator,

[0202] a second amplifier that amplifies the delayed first sound signal at a second gain, and

[0203] An adder that adds the first sound signal amplified by the first amplifier and the second sound signal that is to be output to the dispersed sound output vibrator and has been delayed and amplified.

[0204] (8) A display device according to (2) above, wherein:

[0205] The signal processing unit includes:

[0206] a first limiter / compressor that performs a limiter process or a compressor process on a first sound signal to be output to the sound output vibrator,

[0207] a delay device for delaying a first sound signal to be output to the dispersed sound output vibrator,

[0208] a gate / expander that performs a gate process or an expander process on the delayed first sound signal, and

[0209] An adder that adds a first sound signal that has been subjected to limiter processing or compressor processing and a second sound signal that will be output to the dispersed sound output vibrator and has been subjected to delay and gate processing or expander processing.

[0210] (9) A display device according to (8) above, wherein:

[0211] The signal processing unit further includes a second limiter / compressor that performs a limiter process or a compressor process on the sum signal generated by the addition by the adder.

[0212] (10) A display device according to (2) above, wherein:

[0213] The signal processing unit includes:

[0214] a delay device for delaying a first sound signal to be output to the dispersed sound output vibrator,

[0215] a gate / expander, performing a gate process or an expander process on the delayed first sound signal,

[0216] an adder that adds the first sound signal to be output to the sound output vibrator and the second sound signal to be output to the dispersed sound output vibrator and that has been subjected to delay and gate processing or expander processing, and

[0217] The limiter / compressor performs a limiter process or a compressor process on the sum signal generated by the addition by the adder.

[0218] (11) A display device according to any one of (1) to (10) above, wherein:

[0219] The signal processing unit processes an image signal and a sound signal of the content.

[0220] (12) A display device according to any one of (1) to (11) above, wherein:

[0221] The display device is configured as a television receiver.

[0222] Reference Mark List

[0223] 1: Display device

[0224] 10: Panel unit

[0225] 11: Display unit

[0226] 20: Vibration unit

[0227] 21. 21-A1 to 21-E5: Vibrator

[0228] 30: Signal processing unit

[0229] 31: Tuner

[0230] 32: Image decoder

[0231] 33: Image processing unit

[0232] 34: Sound Decoder

[0233] 35: Sound processing unit

[0234] 36, 36-A1 to 36-E5: Signal processing unit

[0235] 37: Matrix

[0236] 38, 38-A1 to 38-E5: Amplifier

[0237] 111, 111-A1 to 111-E5: Divided blocks

[0238] 301, 301-A1-1 to 301-B2-3: Delay

[0239] 302, 302-A1-1 to 302-B2-4: Amplifier

[0240] 303, 303-A1 to 303-B2: Adder

[0241] 311, 311-A1 to 311-B2: Limiter

[0242] 312, 312-A1-1 to 312-B2-3: Gate

[0243] 321, 321-A1 to 321-B2: Limiter.

Claims

1. A display device, include: A signal processing unit, processing image signals and sound signals; a panel unit for displaying an image according to the image signal; as well as a vibration unit disposed on the back side of the panel unit and causing the panel unit to vibrate in response to the sound signal, wherein The vibration unit includes a plurality of vibrators, and the signal processing unit outputs the sound signal not only to the sound output vibrator of the vibrator which is the output target of the sound signal among the plurality of vibrators but also to the dispersed sound output vibrators of the vibrators which are the dispersed targets of the sound signal, wherein the signal processing unit delays the sound signal to be output to the dispersed sound output vibrator relative to the sound signal to be output to the sound output vibrator, And wherein, the signal processing unit comprises: a first amplifier that amplifies a first sound signal to be output to the sound output vibrator at a first gain, a delayer that delays the first sound signal to be output to the dispersed sound output vibrator, a second amplifier that amplifies the delayed first sound signal at a second gain, and An adder that adds the first sound signal amplified by the first amplifier and the second sound signal to be output to the dispersed sound output vibrator and that has been delayed and amplified.

2. The display device according to claim 1, in, Each vibrator of the vibration unit is provided for each predetermined area of ​​the panel unit.

3. The display device according to claim 2, in, The dispersive sound output vibrator is set within a dispersible range according to a reproduction frequency of a sound signal with reference to a setting position of the sound output vibrator.

4. The display device according to claim 3, in, In the case where the reproduction frequency is a frequency higher than a predetermined frequency, a vibrator provided in a surrounding area of ​​the sound output vibrator is included in the dispersed sound output vibrator, and In the case where the reproduction frequency is a frequency lower than the predetermined frequency, a vibrator provided in an area other than the surrounding area of ​​the sound output vibrator is included in the dispersed sound output vibrator.

5. The display device according to claim 2, in, The dispersed sound output vibrator includes a vibrator provided in a surrounding area of ​​the sound output vibrator.

6. The display device according to claim 1, in, The signal processing unit processes an image signal and a sound signal of content.

7. The display device according to claim 6, in, The display device is configured as a television receiver.

8. A display device, include: A signal processing unit, processing image signals and sound signals; a panel unit for displaying an image according to the image signal; as well as a vibration unit disposed on the back side of the panel unit and causing the panel unit to vibrate in response to the sound signal, wherein The vibration unit includes a plurality of vibrators, and the signal processing unit outputs the sound signal not only to the sound output vibrator of the vibrator which is the output target of the sound signal among the plurality of vibrators but also to the dispersed sound output vibrators of the vibrators which are the dispersed targets of the sound signal, wherein the signal processing unit delays the sound signal to be output to the dispersed sound output vibrator relative to the sound signal to be output to the sound output vibrator, And wherein, the signal processing unit comprises: a first limiter / compressor that performs a limiter process or a compressor process on a first sound signal to be output to the sound output vibrator, a delayer that delays the first sound signal to be output to the dispersed sound output vibrator, a gate / expander that performs a gate process or an expander process on the delayed first sound signal, and An adder that adds the first sound signal that has been subjected to the limiter processing or the compressor processing and the second sound signal that will be output to the dispersed sound output vibrator and has been subjected to the delay and the gate processing or the expander processing.

9. The display device according to claim 8, in, The signal processing unit further includes a second limiter / compressor that performs the limiter process or the compressor process on the sum signal generated by the addition by the adder.

10. A display device, include: A signal processing unit, processing image signals and sound signals; a panel unit for displaying an image according to the image signal; as well as a vibration unit disposed on the back side of the panel unit and causing the panel unit to vibrate in response to the sound signal, wherein The vibration unit includes a plurality of vibrators, and the signal processing unit outputs the sound signal not only to the sound output vibrator of the vibrator which is the output target of the sound signal among the plurality of vibrators but also to the dispersed sound output vibrators of the vibrators which are the dispersed targets of the sound signal, wherein the signal processing unit delays the sound signal to be output to the dispersed sound output vibrator relative to the sound signal to be output to the sound output vibrator, And wherein, the signal processing unit comprises: a delayer that delays the first sound signal to be output to the dispersed sound output vibrator, a gate / expander, performing a gate process or an expander process on the delayed first sound signal, an adder that adds the first sound signal to be output to the sound output vibrator and the second sound signal to be output to the dispersed sound output vibrator and that has been subjected to the delay and the gate processing or the expander processing, and The limiter / compressor performs a limiter process or a compressor process on the sum signal generated by the addition by the adder.

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