WO2022001204A1 - 显示设备及屏幕发声方法 - Google Patents

显示设备及屏幕发声方法 Download PDF

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Publication number
WO2022001204A1
WO2022001204A1 PCT/CN2021/081680 CN2021081680W WO2022001204A1 WO 2022001204 A1 WO2022001204 A1 WO 2022001204A1 CN 2021081680 W CN2021081680 W CN 2021081680W WO 2022001204 A1 WO2022001204 A1 WO 2022001204A1
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WO
WIPO (PCT)
Prior art keywords
vibrator
area
audio
oscillator
display device
Prior art date
Application number
PCT/CN2021/081680
Other languages
English (en)
French (fr)
Inventor
于宁
王之奎
孔超
周辉
王英瑞
王海盈
杨建新
张婵
姜元恩
Original Assignee
海信视像科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202010607314.3A external-priority patent/CN111836083B/zh
Priority claimed from CN202022505941.4U external-priority patent/CN213342672U/zh
Priority claimed from CN202022506817.XU external-priority patent/CN213342673U/zh
Application filed by 海信视像科技股份有限公司 filed Critical 海信视像科技股份有限公司
Priority to CN202180046237.1A priority Critical patent/CN116158091A/zh
Publication of WO2022001204A1 publication Critical patent/WO2022001204A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the present application relates to the technical field of display devices, and in particular, to a display device and a method for producing sound on a screen.
  • the screen sound technology is to arrange a vibrator capable of producing sound in a display device such as a TV, and use the vibrator to produce sound to achieve or close to the sound effect of a traditional speaker.
  • display devices that emit sound from the screen usually set the vibrator on one side to the left channel, and the vibrator on the other side to the right channel, so as to achieve the on-the-spot effect of two-channel sound.
  • this sounding method Similar to the traditional TV sounding method, it is difficult to bring people a better on-the-spot experience.
  • the present application provides a display device and a screen sounding method.
  • the present application provides a display device comprising:
  • a display comprising a screen sounding module, the screen sounding module comprising a plurality of vibrators, and the plurality of the vibrators are distributed in different display areas of the display; a controller connected to the display, the controller is configured as : in response to the control signal indicating to play the video file, detect the corresponding oscillator area of the audio of the video file in real time, obtain the audio oscillator area, wherein, the oscillator area is divided according to the channel mode; according to the same as the audio in the video file
  • the image of the moment judges whether there is a character vibrator area, and the character vibrator area is the vibrator area corresponding to the character position; it is judged whether there is an alternative vibrator area in all the audio frequency vibrator areas, wherein, the audio frequency of the alternative vibrator area and all If the candidate vibrator area exists in all the audio vibrator areas, control the vibrator corresponding to the character area in the character vibrator area to play the audio corresponding to the candidate vibrator area.
  • the person area includes an area within a preset distance of the person's face, so as to achieve the effect of the vibrator near the person's face making sounds, which improves the on-site experience.
  • the controller is further configured to: divide the plurality of vibrators into different vibrator regions according to a channel mode, where the channel mode includes a channel mode of the video file, or the screen sounds
  • the channel mode of the module, or the channel mode input by the user improves the adaptability of the division of the vibrator area and enriches the on-the-spot experience scene of the screen sound.
  • the embodiments of the present application provide a method for sounding on a screen, the method comprising:
  • the candidate vibrator area if the candidate vibrator area does not exist in all the audio vibrator areas, control the vibrator in the audio vibrator area to play the corresponding audio, so that the display device retains the traditional sounding mode, so as to ensure the smooth playback of the video file .
  • the vibrator in the character area plays the audio corresponding to the candidate vibrator area according to the second sound gain coefficient, so as to avoid a situation where the sound is too low.
  • the present application also provides a display device, comprising: an organic light emitting diode OLED display structure, a sticking structure, a sound-emitting backplane and at least one actuator; wherein the first side of the OLED display structure is used for displaying light signal; the second side of the OLED display structure is attached to the first side of the sound-emitting backplane through the sticking structure; the at least one exciter is attached and arranged on the second side of the sound-emitting backplane, The exciter is used for vibrating and sounding the sound-emitting backplane and the OLED display structure.
  • the sticking structure includes: a plurality of double-sided tapes; the plurality of double-sided tapes are arranged according to a preset rule, and there is a gap between two adjacent double-sided tapes.
  • the preset rule includes: the plurality of double-sided adhesive tapes are arranged parallel to the length or width direction of the OLED display device and arranged at equal intervals.
  • it further includes: a fixing structure disposed on the second side of the sound-emitting backplane for supporting and fixing the OLED display structure and the sound-emitting backplane.
  • the area of the sound-emitting backplane is smaller than that of the OLED display structure; wherein printing of the OLED display structure is included in a first region where the OLED display structure protrudes from the sound-emitting backplane circuit board PCB.
  • a buffer structure is further included, which is disposed between the position where the PCB is not disposed in the first area and the fixing structure, and is used for supporting and protecting the PCB in the first area.
  • the sound frequencies of the sound-emitting backplane and the OLED display structure vibrating and sounding are distributed in low frequency, medium frequency and high frequency frequency bands.
  • the sound-emitting back panel includes: a first skin, a second skin and an intermediate layer; the first skin and the second skin are respectively attached and arranged on both sides of the intermediate layer ;
  • the intermediate layer comprises a plurality of honeycomb cores arranged in a hexagonal shape, the hexagonal cross-section of the honeycomb cores is arranged perpendicular to the first skin and the second skin, and the honeycomb cores are arranged on the first side.
  • the upward stretch ratio is less than the preset threshold.
  • the width of the void ranges from 1 to 100 mm.
  • the present application also provides a sound-emitting OLED screen, comprising: an organic light-emitting diode OLED display structure, a sticking structure, a sound-emitting backplane, and at least one exciter; wherein, the first side of the OLED display structure is for displaying light signals; the second side of the OLED display structure is attached to the first side of the sound-emitting backplane through the sticking structure; the sticking structure includes: a plurality of double-sided tapes; the plurality of double-sided tapes; The surface tapes are parallel to the length or width direction of the OLED display device, and are arranged at equal intervals, and there is a gap between two adjacent double-sided tapes; On the other hand, the exciter is used to vibrate the sound-emitting backplane and the OLED display structure to emit sound.
  • a sound-emitting OLED screen comprising: an organic light-emitting diode OLED display structure, a sticking structure, a sound-emitting backplane
  • the present application also provides a display device, comprising: a display structure, a sound-emitting backplane, a support structure, a plurality of fixing structures and at least one exciter; wherein the first side of the display structure is used for displaying , the second side of the display structure is attached to the first side of the sounding backplane; there is a gap between the second side of the sounding backplane and the support structure; the plurality of fixing structures are used to: The sounding backplane is connected to the support structure by a plurality of fixed positions arranged on the second side of the sounding backplane; the at least one exciter is fitted on the second side of the sounding backplane, The exciter is used for vibrating the sounding backplane and the display structure to sound.
  • the fixing structure includes: a mounting countersunk seat provided at the fixing position of the sound-emitting back plate, a screw corresponding to the fixing position one-to-one, and a supporting structure provided on the support structure The connecting piece corresponding to the fixing position one-to-one; wherein, at the fixing position, after the screw rod passes through the connecting piece, it is connected with the mounting countersunk seat.
  • the connector includes: a silicone isolation pad.
  • the plurality of fixed positions are set on a plurality of preset columns of the sound-emitting backplane, wherein at least one fixed position is set on each of the preset columns, and the first fixed position in the plurality of preset columns Two preset columns are arranged at the midline of the sound-emitting backplane in the left-right direction.
  • the area of the support structure is smaller than the area of the acoustic backplane.
  • the display device further includes: a protective frame; wherein, the protective frame is arranged at both sides of the sound-emitting backplane in the upper and lower directions, and is used to provide protection for the display structure and the sound-emitting backplane.
  • the first side of the exciter is attached to the second side of the sound-emitting backplane
  • the second side of the exciter is attached to the sound-emitting structure provided on the first side of the support structure
  • the sound-generating structure includes: a flat plate vibration mode, a plurality of rubber folds, and fixing screws corresponding to the rubber folds one-to-one; wherein, the support structure is provided with a hollow position, in the A plurality of fixing screws are arranged around the hollow position, the flat vibration die is connected to one end of the plurality of rubber folds, and the other ends of the plurality of rubber folds are connected to the support structure through a one-to-one correspondence of a plurality of fixing screws connect.
  • the display structure includes: an OLED display structure.
  • the sound frequencies of the sound-emitting backplane and the OLED display structure vibrating and sounding are distributed in low frequency, medium frequency and high frequency frequency bands.
  • the embodiment of the present application divides the vibrator area according to the channel mode, acquires the audio channel in real time from the video file, obtains the audio vibrator area, and performs character detection on the image of the video file in real time to obtain the character synchronized with the audio. If it matches, the vibrator in the character area is controlled to play audio, which improves the on-the-spot effect and user experience of the screen sound.
  • FIG. 1 exemplarily shows a schematic diagram of an operation scene between a display device and a control apparatus according to some embodiments
  • FIG. 2 exemplarily shows a hardware configuration block diagram of a display device 200 according to some embodiments
  • FIG. 3 exemplarily shows a hardware configuration block diagram of the control apparatus 100 according to some embodiments
  • FIG. 4 exemplarily shows a schematic diagram of software configuration in the display device 200 according to some embodiments
  • FIG. 5 exemplarily shows a schematic diagram of displaying an icon control interface of an application in the display device 200 according to some embodiments
  • FIG. 6 exemplarily shows a schematic diagram of the oscillator distribution of the display 275 according to some embodiments
  • Figure 7a exemplarily shows a schematic diagram of a 2.0 channel mode according to some embodiments
  • Figure 7b exemplarily shows a schematic diagram of a 2.1 channel mode according to some embodiments.
  • Figure 7c exemplarily shows a schematic diagram of a 5.1 channel mode according to some embodiments.
  • FIG. 8a A schematic diagram according to some embodiments is exemplarily shown in Figure 8a;
  • FIG. 8b A schematic diagram according to further embodiments is exemplarily shown in FIG. 8b;
  • FIG. 9 exemplarily shows a schematic flowchart of a method for sounding on a screen according to some embodiments.
  • FIG. 10a is a schematic diagram of the distribution of oscillator regions in a 2.0 channel mode in some embodiments.
  • FIG. 10b is a schematic diagram of the distribution of oscillator regions in a 2.1 channel mode and a 5.1 channel mode in some embodiments;
  • 11 is a schematic diagram of the distribution of characters in some embodiments.
  • FIG. 12 is a schematic structural diagram of an embodiment of a display device provided by the present application.
  • FIG. 14 is a schematic structural diagram of an embodiment of a sounding backplane provided by the application.
  • 15 is a schematic structural diagram of an intermediate layer provided by the application.
  • FIG. 16 is a schematic diagram of the bonding structure of the middle layer and the skin of the sound-emitting backplane provided by the application;
  • 17 is a schematic diagram of a cross-sectional structure of an intermediate layer of a sounding backplane provided by the application.
  • 18 is a schematic structural diagram of the skin of the sound-emitting back panel provided by the application.
  • 19 is a schematic diagram of the amplitude attenuation law of the display device provided by the application when conducting bending waves;
  • FIG. 20 is a schematic structural diagram of an embodiment of a display device provided by the present application.
  • 21 is a schematic structural diagram of an embodiment of a buffer structure provided by the application.
  • 22 is a schematic structural diagram of yet another embodiment of the buffer structure provided by the application.
  • 24 is a schematic structural diagram of another embodiment of a sounding backplane provided by the application.
  • FIG. 25 is a schematic structural diagram of an embodiment of a display device provided by the present application.
  • 26 is a schematic enlarged cross-sectional view of the buffer structure provided by the application.
  • FIG. 27 is a schematic structural diagram of an embodiment of a display device provided by the present application.
  • FIG. 28 is a schematic structural diagram of an embodiment of a display device provided by the present application.
  • FIG. 29 is a schematic diagram of the position of the fixing structure provided by the application.
  • FIG. 30 is a schematic diagram of the frequency response comparison of the display device provided by the application.
  • 31 is a schematic diagram of distortion comparison of the display device provided by the application.
  • FIG. 33 is a schematic structural diagram of an embodiment of a sound emission structure provided by an embodiment of the present application.
  • module refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic or combination of hardware or/and software code capable of performing the function associated with that element.
  • remote control refers to a component of an electronic device, such as the display device disclosed in this application, that can wirelessly control the electronic device, typically over a short distance.
  • RF radio frequency
  • functional modules such as WiFi, wireless USB, Bluetooth, and motion sensors may also be included.
  • a hand-held touch remote control replaces most of the physical built-in hard keys in a general remote control device with a user interface in a touch screen.
  • gesture refers to a user behavior that is used by a user to express an intended thought, action, purpose/or result through an action such as a change in hand shape or hand movement.
  • FIG. 1 exemplarily shows a schematic diagram of an operation scenario between a display device and a control apparatus according to an embodiment.
  • a user may operate the display apparatus 200 through the mobile terminal 300 and the control apparatus 100 .
  • the control device 100 may be a remote controller, and the communication between the remote controller and the display device includes infrared protocol communication or Bluetooth protocol communication, and other short-range communication methods, etc., and controls the display device 200 by wireless or other wired methods.
  • the mobile terminal 300 may install a software application with the display device 200 to implement connection communication through a network communication protocol, so as to achieve the purpose of one-to-one control operation and data communication.
  • the server 400 may provide various contents and interactions to the display device 200.
  • the display device 200 interacts by sending and receiving information, and electronic program guide (EPG), receiving software program updates, or accessing a remotely stored digital media library.
  • EPG electronic program guide
  • the display device 200 can be a liquid crystal display, an OLED display, or a projection display device.
  • the display device 200 can additionally provide the function of intelligent network TV with computer support functions, including but not limited to, network TV, smart TV, Internet Protocol Television (IPTV), etc.
  • IPTV Internet Protocol Television
  • FIG. 2 exemplarily shows a block diagram of the hardware configuration of the display device 200 according to the exemplary embodiment.
  • the display device 200 includes a controller 250, a tuner 210, a communicator 220, a detector 230, an input/output interface 255, a display 275, an audio output interface 285, a memory 260, a power supply 290, At least one of the user interface 265 and the external device interface 240 .
  • the display 275 is used for receiving the image signal output from the first processor, and performing components for displaying video content and images and a menu manipulation interface.
  • the display 275 is a projection display, and may also include a projection device and a projection screen.
  • the display apparatus 200 may establish control signal and data signal transmission and reception between the external control apparatus 100 or the content providing apparatus through the communicator 220 .
  • the user interface 265 can be used to receive control signals of the control device 100 .
  • the detector 230 is a signal used by the display device 200 to collect the external environment or interact with the outside.
  • the input/output interface 255 is configured to enable data transfer between the controller 250 and other external devices or other controllers 250 .
  • the external device interface 240 may include, but is not limited to, any one or more interfaces such as a high-definition multimedia interface HDMI interface, an analog or data high-definition component input interface, a composite video input interface, a USB input interface, and an RGB port.
  • the tuner demodulator 210 is configured to receive broadcast television signals through wired or wireless reception.
  • the controller 250 controls the operation of the display device and responds to the user's operation through various software control programs stored in the memory.
  • CPU processor 254 for executing operating system and application program instructions stored in memory.
  • the graphics processor 253 is used to generate various graphic objects, such as: icons, operation menus, and user input instructions to display graphics and so on.
  • the video processor 270 is configured to receive external video signals for video processing.
  • the audio processor 280 is used for receiving external audio signals; the power supply 290 , under the control of the controller 250 , provides power supply support for the display device 200 with the power input from the external power supply.
  • the user interface 265 is used to receive user input signals.
  • FIG. 3 exemplarily shows a configuration block diagram of the control apparatus 100 according to an exemplary embodiment.
  • the control device 100 includes a controller 110 , a communication interface 130 , a user input/output interface, a memory, and a power supply.
  • the control apparatus 100 is configured to control the display apparatus 200, and can receive an input operation instruction from a user, and convert the operation instruction into an instruction that the display apparatus 200 can recognize and respond to.
  • the control device 100 may be a smart device.
  • the user input/output interface 140 wherein the input interface includes at least one of other input interfaces such as a microphone 141, a touch panel 142, a sensor 143, and a key 144.
  • the output interface includes an interface for transmitting received user instructions to the display device 200 .
  • the control device 100 is configured with a communication interface 130, such as: WiFi, Bluetooth, NFC and other modules; a memory 190 for storing various operating programs, data and applications for driving and controlling the control device 200 under the control of the controller.
  • the power supply 180 is used to provide operating power support for each element of the control device 100 under the control of the controller.
  • the system is divided into four layers, from top to bottom, the applications layer (referred to as “application layer”), the application framework layer (referred to as “framework layer”) ”), the Android runtime and the system library layer (referred to as the “system runtime layer”), and the kernel layer.
  • application layer the applications layer
  • framework layer the application framework layer
  • system runtime layer the system library layer
  • the application layer contains at least one application that can display corresponding icon controls in the display, such as: live TV application icon control, video on demand application icon control, media center application Program icon controls, application center icon controls, game application icon controls, etc.
  • FIG. 6 exemplarily shows a schematic diagram of the oscillator distribution of the display 275 according to some embodiments.
  • the display 275 can be provided with a screen sounding module, as shown in FIG. 6 , the screen sounding module can include a plurality of vibrators, and a total of 18 vibrators of vibrator 0--vibrator 17 are shown in FIG. 6 .
  • the 18 vibrators are evenly distributed in the display area of the display 275 .
  • FIG. 6 is only an exemplary illustration, and in some embodiments, the number of vibrators and the distribution positions of the vibrators of the display 275 may be different from those of FIG. 6 .
  • the display device 200 can set the screen sound module to multiple channel modes: 2.0 channel mode, 2.1 channel mode and 5.1 channel mode.
  • Channel mode of course, with the advancement of technology, the screen sound module can also have other channel modes.
  • Fig. 7a exemplarily shows a schematic diagram of a 2.0 channel mode according to some embodiments.
  • the left vibrator constitutes the left channel
  • the vibrator on the right makes up the right channel.
  • Fig. 7b exemplarily shows a schematic diagram of a 2.1 channel mode according to some embodiments. As shown in Fig.
  • Fig. 7c exemplarily shows a schematic diagram of a 5.1 channel mode according to some embodiments. As shown in Fig.
  • the central axis of the display 275 and a horizontal line perpendicular to the central axis are used as the dividing line, and the upper left part of the vibrator forms the left front Channel, some oscillators in the lower left form the left rear channel, some oscillators in the middle of the display 275 constitute the bass channel, some oscillators in the upper right constitute the right front channel, and some oscillators in the lower right constitute the right rear channel.
  • Stereo effect is possible when at least two of the rear channel, bass channel, right front channel, and right rear channel emit different sounds simultaneously.
  • an audio is preset with a channel mode, so that the audio can be played in the preset channel mode, wherein the preset channel mode may include one or more channel modes.
  • the display device 200 can set the channel mode so that the user can play audio in the default channel mode or the self-selected channel mode.
  • the channel of the human voice in the audio is usually not associated with the position of the person in the video image, resulting in poor audio presence of the video file.
  • Fig. 8a exemplarily shows a schematic diagram according to some embodiments.
  • the sounding object "Virtual figurine shows indoor temperature 26°C” is presented on the upper left corner of the user graphical interface, Playing the sound "indoor temperature is 26°C” results in the spatial separation of the picture and sound, which brings a bad experience to the user.
  • Fig. 8b exemplarily shows a schematic diagram according to other embodiments, it can be seen that the video image includes two men and one woman, a total of three characters, and at the same time, the video image also corresponds to Has the line "BBB". Taking the channel mode as 2.0 as an example, the lady is located in the vocal range of the right channel, and the positions of the two men are located in the vocal range of the left channel. At the same time, the video image also corresponds to the line "BBB". In the related art, the line may be uttered by any one channel or multiple channels.
  • the user experience is that the lady on the right is speaking, and the on-the-spot effect is better. ; and if the audio of the line is voiced by a non-right channel, such as the left channel, or the left channel and the bass channel are co-voiced, or the full channel is co-voiced, it will not bring the user experience of the lady's voice. not effectively.
  • an embodiment of the present application provides a method for producing sound on the screen, which can be used in the display device 200.
  • the method for producing sound on the screen may include the following steps:
  • Step S100 Divide the plurality of vibrators into different vibrator regions according to the channel mode.
  • Fig. 10a is a schematic diagram of the distribution of the vibrator area in the 2.0 channel mode in some embodiments.
  • the controller of the display device can correspond to the left channel
  • the oscillator is divided into the first oscillator area
  • the oscillator corresponding to the right channel is divided into the second oscillator area
  • the first oscillator area includes oscillator 0, oscillator 1, oscillator 2, oscillator 3, oscillator 4, oscillator 5, oscillator 6, oscillator 7 and vibrator 8
  • the second vibrator area includes vibrator 9, vibrator 10, vibrator 11, vibrator 12, vibrator 13, vibrator 14, vibrator 15, vibrator 16 and vibrator 17.
  • Fig. 10b is a schematic diagram of the distribution of the vibrator area in the 2.1 channel mode and the 5.1 channel mode in some embodiments.
  • the display shows The controller of the device may divide the vibrator corresponding to the left channel into the third vibrator area, the vibrator corresponding to the right channel into the fourth vibrator area, and the vibrator corresponding to the bass channel into the fifth vibrator area.
  • the oscillators corresponding to the left front channel and the left rear channel are divided into the third oscillator area, and the right front channel
  • the oscillators corresponding to the channel and the right rear channel are divided into a fourth oscillator area
  • the oscillators corresponding to the bass channel are divided into a fifth oscillator area.
  • the third oscillator area includes oscillator 0, oscillator 1, oscillator 2, oscillator 3, oscillator 4, oscillator 6, oscillator 7 and oscillator 8, and the fourth oscillator area includes oscillator 9, oscillator 10, oscillator 11, oscillator 13 , vibrator 14 , vibrator 15 , vibrator 16 and vibrator 17 , and the fifth vibrator area includes vibrator 5 and vibrator 12 .
  • the display device may be set with a default channel mode
  • the controller of the display device may divide the vibrators into different vibrator areas in advance according to the default channel mode
  • the user may change the default channel mode.
  • the video file can be set with a default channel mode.
  • the display device can obtain the default channel mode of the video file in response to the control signal instructing to play the video file.
  • the default channel mode of the file divides the vibrator area, wherein the control signal instructing to play the video file may be a signal for opening a video file, such as a signal for a user clicking on a certain movie.
  • Video files can be played in multiple channel modes.
  • the display device can divide the oscillator area according to the default channel mode of the display device or the default channel mode of the video file.
  • a control signal instructing to change the channel mode such as changing the channel mode from 2.0 to 5.1
  • the display device can re-divide the vibrator area according to the new channel mode.
  • This application provides the division method of the vibrator area under different channel modes, so that the The vibrator area division can be performed in various channel modes of the video file and display device, which improves the adaptability of the vibrator area division and enriches the on-the-spot experience scene of the screen sound.
  • Step S110 In response to the control signal instructing to play the video file, real-time detection of the vibrator area corresponding to the audio of the video file is performed to obtain the audio vibrator area.
  • the controller of the display device can acquire the audio of the video file in real time according to the control signal, detect the audio channel, and mark the oscillator area corresponding to the audio channel as Audio vibrator area.
  • the channel mode is 2.1, and the audio of the video file at time t1 is obtained. If it is detected that the audio is sounding from the right channel, the vibrator area corresponding to the right channel, that is, the fourth vibrator area, is marked as audio oscillator area.
  • Step S120 Determine whether there is a character vibrator area according to the image in the video file at the same time as the audio, and the character vibrator area is the vibrator area corresponding to the position of the character.
  • the controller of the display device can obtain the image at the same time as the audio according to the video file in real time, and perform face recognition on the image.
  • the position of the character is compared, and the vibrator area corresponding to the character is marked as the character vibrator area.
  • the gender of the person can also be identified through face recognition. Face recognition algorithms identify the gender of a person.
  • the channel mode is 2.1, the image of the video file at time t1 is obtained, and face recognition is performed on the image to obtain character A, whose gender is female, and the vibrator area corresponding to the position of character A is the third vibrator zone, and mark the third vibrator zone as the character vibrator zone.
  • Step S130 Determine whether there is an alternative oscillator region in all the audio oscillator regions, wherein the audio frequency of the candidate oscillator region matches the character.
  • the audio in the audio vibrator area may be human voice or background sound, such as music, fighting, etc. If it is background sound, you do not need to judge whether the audio in the audio vibrator area matches the character, if it is human voice, you need to judge Whether the audio in the audio vibrator area matches the character.
  • the number of audio vibrator areas is one, and voiceprint recognition can be performed on the audio in the audio vibrator area to determine whether the audio is a human voice, and if the audio is a human voice, then further determine whether the timbre information of the audio is related to the character
  • the timbre information may include gender, that is, it is determined whether the gender of the human voice is consistent with the gender of the character, and if they are consistent, the audio vibrator area is marked as a candidate vibrator area.
  • the voiceprint recognition algorithm can identify whether the audio is human and can identify the gender of the human voice.
  • the number of audio oscillator regions is multiple, and voiceprint recognition can be performed on the audio of each audio oscillator region to determine whether the audio matches a character.
  • the audio vibrator area is the fourth vibrator area
  • the character vibrator area is the third vibrator area
  • the gender of the character A in the character vibrator area is a lady
  • the audio in the fourth vibrator area is a female voice
  • the fourth The vibrator area is marked as the candidate vibrator area, and if the human voice in the fourth vibrator area is inconsistent with the gender of the character in the third vibrator area, the fourth vibrator area is not marked as the candidate vibrator area.
  • Step S140 If there are candidate vibrator areas in all the audio vibrator areas, control the vibrators of the character area in the character vibrator area to play the audio corresponding to the candidate vibrator area.
  • If there is a candidate vibrator area it indicates that there is audio matching the character in the image at the current moment, and the vibrator in the character area corresponding to the character vibrator area can be controlled to play the audio corresponding to the candidate vibrator area.
  • the character area may be an area within a preset distance of the face, where the preset distance may be the distance between two adjacent vibrators. As shown in FIG. 11 , the face of the character is located at vibrator 0 -Between vibrators 4, the character area may include vibrator 0 - vibrator 4; the character area may also be the face and the area above the face, as shown in Figure 11, the character area may also include vibrator 0 and vibrator 1.
  • the vibrator in the character area can be controlled to play the corresponding audio according to the second sound gain coefficient ⁇ , wherein, under the condition that the amplification factor of the speaker of the display device is constant, the larger the second sound gain coefficient ⁇ , the higher the audio frequency can be.
  • the second sound gain coefficient ⁇ can be adjusted according to the number of vibrators in the character area.
  • the second sound gain coefficient ⁇ is at most 0db, so that the audio volume amplification factor can reach the amplification factor of the speaker.
  • the audio is produced by all the vibrators corresponding to one channel, while in some embodiments, only the vibrators in the character area produce sound.
  • the larger the second sound gain coefficient ⁇ can be set, so as to increase the audio volume amplification factor.
  • the second sound gain coefficient ⁇ is the smallest to make the audio soundless. According to the smaller the number of vibrators in the character area, the smaller the second sound gain coefficient ⁇ can be set, so as to avoid the situation that the volume of the human voice is too high.
  • Step S150 If there is no character vibrator area or there is no candidate vibrator area in all the audio vibrator areas, control the vibrators in the audio vibrator area to play the corresponding audio.
  • the vibrator in the audio vibrator area can be controlled to play the corresponding audio according to the first sound gain coefficient ⁇ , wherein the first sound gain coefficient ⁇ is at most 0db, and the audio can be amplified according to the amplification factor of the speaker.
  • the minimum sound gain factor ⁇ makes the audio silent.
  • the vibrator in the audio vibrator area can be controlled to play the corresponding audio.
  • the vibrator in the audio vibrator area can be controlled to play the corresponding audio according to the first sound gain coefficient ⁇ .
  • the vibrator area corresponding to the line "BBB” is the audio vibrator area
  • the image at the same time as the line "BBB” is detected that is, Figure 8b
  • the image shown has two character vibrator areas, the first character vibrator area is the vibrator area corresponding to the man on the left, the second character vibrator area is the vibrator area corresponding to the woman on the right, and the man's face on the far left.
  • the identification was unsuccessful, therefore, two character vibrator areas were finally obtained.
  • the audio oscillator area does not match the first character oscillator area, that is, the oscillator area corresponding to men, and the second character oscillator area, that is The vibrator area corresponding to the lady matches. Therefore, the audio vibrator area corresponding to the line "BBB” can be marked as the candidate vibrator area corresponding to the second character vibrator area, and the vibrator playback device of the character area in the second character vibrator area can be controlled. Select the audio corresponding to the vibrator area, that is, the line "BBB".
  • the vibrator of the character area in the second character vibrator area is still played.
  • the audio corresponding to the alternative oscillator area that is, the line "BBB”
  • the vibrator is concentrated in the character area, and the on-the-spot effect is better.
  • the vibrators that emit sound are always concentrated in the character area, and the on-site effect is good.
  • the embodiment of the present application divides the vibrator area according to the channel mode, obtains the audio channel in real time from the video file, obtains the audio vibrator area, and performs person detection on the image of the video file in real time, and obtains the audio frequency synchronization.
  • Character if the audio matches the character, the vibrator in the character area is controlled to play the audio, which improves the on-the-spot effect and user experience of the screen sound.
  • the structural design scheme of the above-mentioned display device may include the following methods: some of the design ideas mentioned below are based on the following patents. method is incorporated into the text. In the text, “oscillator” and “exciter” are essentially the same.
  • FIG. 12 is a schematic structural diagram of an embodiment of the display device provided in the present application.
  • the display device shown in FIG. 12 may be an OLED display device having a sound-emitting OLED screen, and the display device includes: an OLED display structure 31a, a sounding back plate 32a, a sticking structure 33a and at least one exciter 34a.
  • the first side of the OLED display structure 31a is used to display light signals, the second side is attached to the first side of the sound-emitting backplane 32a through the adhesive structure 33a, and at least one exciter 34a is attached to the sound-emitting backplane 32a.
  • the surface area of the sound-emitting backplane 32a is equal to or smaller than the surface area of the OLED display structure 31a.
  • the OLED display structure 31a of the display device, the sound-emitting backplane 32a, and the at least one exciter 34a are jointly used to realize the sound-emitting function of the display device.
  • at least one exciter 34a includes two exciters as an example, any one of the exciters 34a can be used to receive an electrical signal corresponding to the sound to be played, and after converting the electrical signal into mechanical vibration, convert the mechanical vibration Acts on the sounding back plate 32a.
  • Sound-emitting back plate 32a The sound-emitting back plate 32a generates bending waves through modal resonance under the action of the mechanical vibration of the exciter 34a. A 360-degree direction range spreads around.
  • the sound-emitting backplane 32a and the OLED display structure 31a to which the sound-emitting backplane 32a is attached vibrate back and forth in the up and down direction as shown in FIG.
  • FIG. 13 is a schematic diagram of the detailed structure of the sticking structure provided by the application, and FIG. 13 shows a specific implementation manner of the sticking structure 33a.
  • the sticking structure 33a is specifically realized by a plurality of double-sided tapes, and the multiple double-sided tapes are parallel to the length or width direction of the display device. For example, in FIG.
  • the multiple double-sided tapes are all parallel to the lower edge of the display device. (also equivalent to being parallel to the lower edge of the OLED display structure or the sound-emitting backplane), so that the sticking structure 33a can transmit vibration between the OLED display structure 31a and the sound-emitting backplane 32a.
  • a plurality of double-sided tapes are arranged at equal intervals, and there is a gap between two adjacent double-sided tapes, and the remaining gap can be used as an exhaust opening that runs through the left and right directions between the OLED display structure 31a and the sound-emitting backplane 32a. sew.
  • the width of the gap can be set between 1-100mm; in some embodiments, it can be selected as 2-4mm, so that when the OLED display structure 31a and the sound-emitting backplane 32a are bonded together, the front and rear bonding surfaces of the bonding structure 33a can be easily discharged.
  • the air inside improves the quality of the paste.
  • the sound-emitting backplane is connected to the second side of the OLED display structure through the adhesive structure, so that when the OLED display structure is used as a sound-emitting screen, the frequency of the sound emitted by vibration is only distributed in high Insufficient frequency band, through the conduction of the sounding backplane and driving the OLED display structure to vibrate, the frequency of the sound emitted by the OLED display device can be distributed in the low frequency, medium frequency and high frequency frequency bands (the drawn sound frequency distribution can be as shown in Figure 4).
  • Curve A shown in the figure, so that there is no need to set up speakers/subwoofers and other devices in the display device to compensate and modify the sound emitted by the OLED display panel, which reduces the overall complexity of the display device with the OLED display panel that can emit sound.
  • the OLED display structure can emit more low-frequency sounds by fitting the sound-emitting backplane, so that the OLED display screen can take into account a more realistic sound field and a thinner shape.
  • the sound-emitting backplane 32a specifically includes: a middle layer 322a and a skin 321a disposed on both sides of the middle layer 322a
  • FIG. 14 is a schematic structural diagram of an embodiment of the sound-emitting backplane provided by the application.
  • a skin 321a is provided on both sides of the first side and the second side of the intermediate layer 322a, and two layers of the skin 321a and the middle
  • the surface areas of the layers 322a are the same, or alternatively, the two layers of skin 321a may cover at least part of the middle layer 322a.
  • FIG. 15 is a schematic structural diagram of the intermediate layer provided by the application.
  • the intermediate layer 322 a of the acoustic backplane 32 a provided in some embodiments is connected by a plurality of hexagonally arranged honeycomb cores.
  • the side surfaces corresponding to the six sides of each honeycomb core are respectively connected with the corresponding side surfaces of the other six honeycomb cores.
  • FIG. 16 is a schematic diagram of the bonding structure of the middle layer and the skin of the sound-emitting back panel provided by the application. As shown in FIG.
  • the section of the honeycomb core included in the middle layer 322a is shown in FIG. 16 .
  • the intermediate layer including the honeycomb core provided by the present application is parallel to the y direction by arranging two parallel sides of the hexagonal honeycomb core wall, and there is no parallel side in the x direction of the honeycomb core wall, so that the sound-emitting back plate is in the x direction.
  • the direction and the y-direction have different conduction properties. Specifically, by adjusting the hexagonal draw ratio of the honeycomb core section, different conductivity in different directions is achieved.
  • FIG. 17 is a schematic diagram of the cross-sectional structure of the middle layer of the sound-emitting backplane provided by the present application. As shown in Fig. 17, the draw ratio of the hexagonal section of the honeycomb core in the x-y direction is d/L.
  • the first direction is the y direction in the figure
  • the second direction is the x direction in the figure
  • d is the unit length of each honeycomb core in the x direction when a plurality of hexagonal honeycomb cores are arranged in sequence
  • the unit The length d refers to the minimum unit of length in the x direction after the multiple hexagonal honeycomb cores are arranged in sequence, that is, the multiple hexagonal honeycomb cores are repeatedly arranged in the x direction according to the law of unit length d
  • the unit length d is six The distance d between the side 3 and the side 6 perpendicular to the x circumference of the angular shape
  • L is the unit length of each honeycomb core in the y direction when multiple hexagonal honeycomb cores are arranged in sequence
  • the unit length L refers to: multiple The smallest unit of length in the y direction after the hexagonal honeycomb cores are arranged in sequence, that is, multiple hexagonal honeycomb cores are repeatedly arranged in the y direction according to the law
  • the stretch ratio in the x-direction is 0.58:1.
  • all the honeycomb cores in the middle layer of the sound-emitting backplane can be stretched in the x-direction of the hexagonal cross-section at a preset stretching ratio. The stretching is performed such that the stretching ratio of the hexagonal interface of each honeycomb core is less than a preset threshold of 0.58:1.
  • the stretching ratio d/L when the stretching ratio d/L is smaller, it means that the hexagonal interface of the honeycomb core as shown in Figure 17 has denser parallel walls distributed along the y direction, and the stiffness is stronger, so it is easy to conduct bending waves through vibration; In the x-direction, the included angle of the hexagonal honeycomb core wall is larger, and the stiffness is weaker, so it is easy to absorb the conduction of bending wave vibration.
  • the middle layer as shown in Figure 17 realizes the different conduction properties of the acoustic backplane in the x-direction and the y-direction through the setting of the honeycomb core draw ratio.
  • the amplitude decay laws of the directions are different. In some embodiments, as shown in FIG.
  • the acoustic backplane when the stretch ratio in the y-direction is less than 0.58:1, the acoustic backplane is less conductive to bending waves in the x-direction than it does in the y-direction for bending waves
  • the acoustic backplane with the middle layer as shown in Figure 17 transmits bending waves, the amplitude attenuation of the bending wave in the x direction is greater than the amplitude attenuation of the bending wave in the y direction.
  • FIG. 18 is a schematic structural diagram of the skin of the sound-emitting backplane provided by the application, and a schematic diagram of the fiber structure on the surface of the skin as shown in FIG. 18 , the skin structure shown in FIG. 18 is an interwoven fiber structure in the xy direction, The density of fibers parallel to the y direction and perpendicular to the x direction is greater than the density of fibers parallel to the x direction and perpendicular to the y direction.
  • fibers parallel to the x-direction and perpendicular to the y-direction may not be provided, that is, the skin is a unidirectional fiber structure, and the directions of all fibers are parallel to the y-direction direction and set perpendicular to the x direction.
  • the structure of the skin as shown in Figure 18 can cooperate with the middle layer to conduct conduction, so that when the acoustic backplane conducts bending waves, the amplitude attenuation laws in the x-direction and the y-direction are different.
  • the fibers of the skin have a denser distribution of parallel fibers in the y-direction, which is more rigid and therefore easier to conduct bending waves through vibration;
  • the fibers are sparsely distributed in the x-direction parallel to the fibers, and their stiffness is weaker, so it is not easy to transmit bending waves through vibration.
  • the amplitude attenuation of the bending wave in the x direction is greater than the amplitude attenuation of the bending wave in the y direction size.
  • the material of the honeycomb core may be paper, aramid fiber, metal, or other composite materials.
  • the material of the skin includes, but is not limited to, fiberglass, carbon fiber, glass-carbon hybrid fiber, plastic, lightweight aluminum, and the like.
  • the first and second skin thicknesses may be the same or different. In some embodiments, the thickness of the skin ranges from 0.1 to 0.5 mm; alternatively, the thickness of the skin ranges from 0.1 to 0.18 mm.
  • FIG. 19 is a schematic diagram of the amplitude attenuation law of the display device provided by the present application when conducting bending waves
  • FIG. 19 shows the amplitude attenuation of the sound-emitting backplane in each direction under the excitation of the exciter.
  • the generated bending wave spreads around the P point, and the sound-emitting substrate has the largest amplitude at the P point.
  • the draw ratio of the honeycomb core of the intermediate layer is less than the preset threshold and the fiber density of the skin in the y-direction is greater than that in the x-direction, so , the amplitude decay value and decay speed of the amplitude at point P in the x direction are greater than the amplitude decay value and decay speed of the amplitude at point P in the y direction.
  • FIG. 20 is a schematic structural diagram of an embodiment of the display device provided in the present application.
  • the display device shown in FIG. 20 further includes: a fixing structure 35a for supporting and fixing the OLED display structure 31a and the sound-emitting backplane 32a to provide support and protection for the whole that the fixed OLED display structure 31a and the sound-emitting backplane 32a are bonded together.
  • the display device shown in FIG. 20 may be a TV set, and the fixed structure 35a may also be called a middle frame back panel of the TV set, and the fixed structure 35a may cover the back shell of the TV set.
  • the fixing structure 35a may be surrounded by a thin-walled structure with a protruding reinforcing frame and a middle reinforcing beam, and the rear of the fixing structure 35a may also be provided with screw holes for mounting a TV bracket.
  • two exciters 34a are provided on the left and right sides of the display device, then the two exciters 34a on the left and the two exciters on the right in FIG. 20
  • a main board 37a, a power board 36a, a screen driver (TCON) board 38a and the like of the display device may also be provided in the hollow of the fixing structure 35a of the display device.
  • FIG. 21 is a schematic structural diagram of an embodiment of the buffer structure provided by the present application.
  • the fixed structure 35a is not completely fitted with the sounding back plate 32a, but is in a non-contact state with a certain distance between the two, and is passed between the surrounding edges of the sounding back plate 32a and the reinforcing longitudinal beams in the middle of the fixed structure 35a.
  • a buffer structure 39a is arranged in the gap between the fixed structure 35a and the sounding back plate 32a.
  • the material of the buffer structure may be a damping double-sided tape, and all the buffer structures 39a facing the fixing structure 35a are on the same plane, so as to be pasted and connected in parallel with the fixing structure 35a.
  • the area of the sound-emitting backplane 32a of the display device is smaller than the area of the OLED display structure 31a, in the example shown in FIG.
  • the dotted frame is marked as the first area 311a.
  • the OLED display device 31a is provided with a printed circuit board 312a (Printed Circuit Board, PCB for short) on the first area 311a. It can be seen that if the fixing structure 35a is pasted behind the sound-emitting backplane 32a at this time, a certain space will be formed in the first area between the OLED display structure 31a and the fixing structure 35a, and this part of the space is just located in a part of the display device.
  • FIG. 22 is a schematic structural diagram of another embodiment of the buffer structure provided by the application.
  • a partial buffer is specially arranged in the first area 311 a where the PCB 312 a is not arranged. structure 39a, and the hardness of the part of the buffer structure disposed in the first area 311a is greater than that of the buffer structure disposed outside the first area 311a.
  • FIG. 23 is a schematic structural diagram of another embodiment of the buffer structure provided by the present application.
  • the buffer structure disposed in the first region between the OLED display structure 31 a and the fixed structure 35 a can be seen 39a, can protect the PCB 312a in the first area, even if the user or related personnel hold the first area, the buffer structure 39a set between the OLED display structure 31a and the fixing structure 35a can evenly distribute the pressure to the whole of the OLED display structure 31a, thereby avoiding damage to the OLED display structure 31a and the PCB 312a on the OLED display structure 31a when the first area is pressed, and can also ensure the overall safety performance of the display device and improve the service life of the display device. In order to improve the user experience.
  • the sound-emitting backplane 32a may be a whole and cover the entire OLED display structure 31a, (including the lower first region 311a, and the first For the PCB 312a set in the area, the structure after covering can refer to Fig. 27).
  • FIG. 24 is a schematic structural diagram of another embodiment of the sound-emitting backplane provided by the application, wherein the area of the sound-emitting backplane 32a may also be smaller than the area of the OLED display structure 31a, and a plurality of sound-emitting devices may be set according to the sound-emitting requirements of the display device The backplane, for example, in FIG.
  • the display device is provided with two sounding backplanes 321a and 322a on the left and right sides as an example, and each sounding backplane is respectively connected to the exciter, then the sounding backplane 321a and the sounding backplane 322a can be provided respectively.
  • the sound signal of the left and right channels is provided with two sounding backplanes 321a and 322a on the left and right sides as an example, and each sounding backplane is respectively connected to the exciter, then the sounding backplane 321a and the sounding backplane 322a can be provided respectively.
  • the sound signal of the left and right channels are provided with two sounding backplanes 321a and 322a on the left and right sides as an example, and each sounding backplane is respectively connected to the exciter, then the sounding backplane 321a and the sounding backplane 322a can be provided respectively.
  • the sound signal of the left and right channels is provided with two sounding backplanes 321a and
  • FIG. 25 is a schematic structural diagram of an embodiment of a display device provided by the present application, showing a cross-sectional structure of a display device using the sound-emitting backplane 32a as shown in FIG.
  • the area of the OLED display structure 31a is smaller than that of the OLED display structure 31a. Therefore, in the uppermost region 310 of the display structure, the OLED display structure 31a is not covered by the sounding backplane 32, so the OLED display panel 31 is directly connected to the backplane of the display device.
  • the method can also be in the form of double-sided tape.
  • FIG. 26 is an enlarged schematic cross-sectional view of the buffer structure provided by the present application.
  • the buffer structure 39a can be a buffer sticker with a gate-shaped structure shown in the figure, and can also be displayed by OLED.
  • the space in the first area between the structure 31a and the fixed structure 35a provides support protection.
  • FIG. 27 is a schematic structural diagram of an embodiment of a display device provided by the present application.
  • the sound-emitting screen of the display device shown in FIG. 27 can be specifically implemented by an OLED display screen. It includes: a display structure 31b, a sounding backplane 32b, a support structure 35b, a plurality of fixing structures 40b and at least one exciter 34b.
  • the first side of the display structure 31b is used for displaying the light signal
  • the second side of the display structure 31b is arranged in a fit with the first side of the sound-emitting backplane 32b.
  • At least one exciter 34b is attached to the second side of the sound-emitting back panel 32b.
  • the display structure 31b, the sound-emitting backplane 32b, and the at least one exciter 34b are used together to implement the sound-emitting function of the display device.
  • each exciter 34b can be independently used to drive the display structure 31b and the sound-emitting backplane 32b.
  • the exciter can be used to receive the electrical signal corresponding to the sound to be played, and After the electrical signal is converted into mechanical vibration, the mechanical vibration is directly acted on the sounding back plate 32b.
  • the display structure 31b together with the sound-emitting back plate 32b vibrates back and forth between the first side and the second side direction in the figure under the action of the mechanical vibration of the exciter 34b, and the bending wave is generated by the modal resonance, and the bending wave is caused by the exciter 34b.
  • the place where it is attached to the sound-emitting back plate 32b is the center and spreads in a direction range of 360 degrees around, so as to realize sound.
  • the support structure 35b and the sound-emitting back plate 32b are not in direct contact, but a gap 50b is provided between the support structure 35b and the second side of the sounding back plate 32b.
  • the plurality of fixing structures 40b provided can be used to use multiple positions on the second side of the sound-emitting back plate 32b as fixing positions, and connect the sound-emitting back plate 32b to the supporting structure 35b through these fixing positions, wherein the fixing structure Specifically, 40b may be a flexible floating fixed structure, so that the support structure 35b and the sounding backplane 32b connected by the fixed structure 40b can maintain the connection relationship without direct contact, and can be connected after the connection. There is a certain degree of flexible deformation in the relative position, which reduces the influence of the support structure 35b on the vibration of the sound-emitting back plate 32b, and realizes the effect of the sound-emitting back plate 32b "floating" on the support structure 35b. Finally, while supporting the sound-emitting back plate 32b, it can also Free movement of the acoustic backplate 32b within the amplitude is maintained.
  • FIG. 28 is a schematic structural diagram of an embodiment of the display device provided in the present application, wherein the specific structure of the fixing structure 40 b is described with reference to FIG. 28 .
  • the mounting countersunk seat 401b provided on the second side of the sounding back plate 32b, the screw 402b corresponding to the mounting position, and the supporting structure 35b
  • the connecting piece 403b corresponding to the fixed position.
  • the exposed surface plane of the mounting countersunk seat 401b is flush with the surface of the sounding back plate 32b, then in the case of the upper fixing structure 40b in FIG.
  • the shape of the hollow position of the connecting piece 403b provided on the support structure 35b also matches the shape of the screw 402b. Then the screw 402b can be connected and fixed to the mounting seat counterbore seat 401b through the connecting piece 403b, so as to realize the fixing of one end of the screw 402b and the sounding back plate 32b, and at the same time, the screw 402b can also realize the flexible connection with the supporting structure 35b through the connecting piece 403b. , so that the relative position between the sounding back plate 32b and the supporting structure 35b is floating and fixed by the force provided by the screw 402b, and the gap 50b existing between the supporting structure 35b and the sounding back plate 32b is retained.
  • the connector 403b can be a silicone isolation pad, or the connector 403b can also be an I-shaped connector, so that the I-shaped connector can meet the fixing requirements through the I-shaped structure, and can pass the silicone
  • the material realizes a flexible connection and provides a certain deformation.
  • the sound-emitting back plate 32b vibrates, the impact of the fixed structure on the vibration of the sound-emitting back plate 32b is minimized, and the "free" vibration of the sound-emitting back plate 32b in space is achieved as much as possible.
  • some embodiments do not limit the position of the fixed structure 40b set on the display device. In a specific implementation manner, FIG.
  • FIG. 29 is a schematic diagram of the position of the fixed structure provided by the present application, wherein, in the sound On the second side of the back plate 32b, a plurality of fixing structures 40b are respectively arranged on a plurality of preset columns.
  • the first column on the left, the second column in the middle, and the third column on the right are used as examples, wherein, The second column in the middle can be arranged at the midline 320b of the left and right sides of the sound-emitting backplane 32b, so that the fixed structure of the second column can provide a certain degree of isolation for the sound emitted by the sound-emitting screen in the left and right channels.
  • the sound-emitting backplane is connected to the support structure through a plurality of floating fixing structures, and a certain distance is maintained between the sound-emitting backplane and the support structure, presenting a kind of "floating type”. ”, which is equivalent to the display structure and the sounding backplane being suspended and fixed on the first side of the support structure, while the second side of the support structure can still be connected to the base or fixed to the wall through the screw holes of the mounting brackets. , without affecting the support structure and the overall design of the display device.
  • the exciter of the display device drives the sound-emitting backplane and the display structure to vibrate and emit sound
  • the overall front and rear movement of the sound-emitting backplane and the free vibration of the edge will not be blocked by the supporting structure, so that the sound-emitting backplane can be
  • the space between the support structures vibrates, thereby improving the sound-emitting effect of the sound-emitting screen provided in the display device, and improving the user experience of the display device.
  • FIG. 30 is a schematic diagram of the frequency response comparison of the display device provided by the application
  • FIG. 31 is a schematic diagram of the distortion comparison of the display device provided by the application
  • FIG. 30 shows the frequency response of the sound emitted by the display device with the sound-emitting screen (Sound sound pressure SPL)
  • SPL Sound-emitting screen
  • FIG. 31 shows the comparison of THD distortion.
  • Other display devices have larger distortion values of the sound emitted at some frequencies due to the sound of the four-sided fixed display panel screen, while the display devices provided by some embodiments also reduce the impact on the display.
  • the obstruction of screen vibration can achieve lower distortion.
  • the area of the support structure 35b may be smaller than that of the sound-emitting backplane 32b, and the support structure 35b does not cover the entire sound-emitting backplane 32b; in some embodiments There is no support structure above it, so that the second side of the sound-emitting back plate 32b can be directly used as a part of the appearance structure of the display device, so that the display device can be lighter and thinner, and the overall weight of the display device can be reduced, further enriching the The use effect of the display device is improved, and the user experience is improved.
  • the display device provided by the embodiments of the present application may be an OLED display device, and in order to adhere the OLED display structure of the OLED display device to the sound-emitting backplane, the embodiments of the present application further provide an adhesive structure for Fit the display structure to the sounding backplane.
  • FIG. 32 is a schematic diagram of the structure of the protective frame provided by the application, wherein, taking the lower structure of the display device as an example, the protective frame 41b can be connected to the middle layer in the sound-emitting backplane 32b to provide the sound-emitting backplane 32b and the display.
  • the underside of structure 31b provides protection.
  • the overall security performance of the display device is guaranteed, the service life of the display device is improved, and the user experience is improved. Therefore, referring to the structure shown in FIG. 28 , the protective frame 41b disposed below can also provide protection to the lower edge of the display structure 31b together with the frame lower cover 351b and the buffer structure.
  • a gap is provided between the sound-emitting backplane and the support structure, so that the sound-emitting backplane can obtain greater vibration in the first and second side directions degrees of freedom.
  • the exciter as an excitation device for driving the sounding backplane to vibrate and emit sound, can also be connected to the support structure, so as to utilize the vibration energy of the second side of the exciter to improve the sound emission efficiency.
  • a sound-emitting structure is also provided on the support structure, so that the exciter is attached to the sound-emitting backplane on the first side, and the sound-emitting backplane and the display structure on the first side are driven to vibrate and sound at the same time.
  • the generated vibration can also drive the sounding structure attached on the second side to vibrate and emit sound. Since the front and rear vibration forms of the exciter are the same, it is equivalent to setting a speaker on the second side of the display device, so as to realize the vibration of the second side of the exciter.
  • the efficient use of energy further improves the energy efficiency of the display device.
  • FIG. 33 is a schematic structural diagram of an embodiment of a sound-emitting structure provided by an embodiment of the present application.
  • the structure shown in FIG. 33 can be applied to a display device provided by any embodiment of the present application.
  • the exciter 34b shown in FIG. 33 can be any exciter in the display device, then the display device reserves a hollow position for the sound-emitting structure at the position opposite to the support structure 35b of the display device and the exciter 34b.
  • a plurality of fixing screws 354b are arranged around the circumference.
  • the flat plate vibration die 352b is connected to one end of the plurality of rubber folds 353b, and the other ends of the plurality of rubber folds 353b are connected to one-to-one corresponding fixing screws 354b, so as to realize the flat plate vibration die 352b and the supporting structure. 35b connection.
  • the material of the plate vibration mode 352b may be metal, carbon fiber, glass fiber, plastic or a honeycomb composite material composed of them.
  • the thickness of the flat diaphragm 352b may range from 0.5 mm to 5 mm. Therefore, when the second side of the exciter 34b is in close contact with the plate vibration mode 352b, the exciter 34b, the plate vibration film 352b and the plurality of rubber rings 353b together constitute a basic structure of an "acoustic radiator".
  • the support structure 35b is also equivalent to arranging a speaker behind the display device, thereby improving the energy utilization efficiency when the exciter 34b vibrates, and increasing the intensity of the sound emitted by the display device as a whole, thereby improving the energy efficiency of the display device.

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Abstract

本申请实施例提供了一种显示设备及屏幕发声方法，显示设备包括：显示器，包括屏幕发声模组，屏幕发声模组包括多个振子，多个振子分布在显示器的不同显示区域；与显示器连接的控制器，控制器被配置为：响应于指示播放视频文件的控制信号，实时检测视频文件的音频对应的振子区，得到音频振子区，其中，振子区根据声道模式划分；根据视频文件中与音频相同时刻的图像判断是否存在人物振子区，人物振子区为人物位置对应的振子区；判断全部音频振子区中是否存在备选振子区，其中，备选振子区的音频与人物相匹配；如果全部音频振子区中存在备选振子区，控制人物振子区对应人物区域的振子播放备选振子区对应的音频。本申请提高了视频播放的临场效果。

Description

显示设备及屏幕发声方法
[根据细则26改正21.05.2021]　
本申请要求于2020年06月29日提交的中国专利局、申请号为202010607314.3、申请名称为“显示设备及屏幕发声方法”；于2020年11月03日提交的中国专利局、申请号为202022506817.X、申请名称为“显示装置及可发声OLED屏幕”；于2020年11月03日提交的中国专利局、申请号为202022505941.4、申请名称为“显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示设备技术领域，具体而言，涉及一种显示设备及屏幕发声方法。
背景技术
屏幕发声技术是在诸如电视之类的显示设备内排布了能够发声的振子，利用振子发声达到或接近于传统扬声器的声音效果。目前，屏幕发声的显示设备通常是将一侧的振子设置为左声道发声，将另一侧的振子设置为右声道发声，以达到双声道发声的临场效果，然而，这种发声方式与传统的电视发声方式相似，难以给人们带来更好的临场体验。
发明内容
本申请提供了一种显示设备及屏幕发声方法。
在一些实施例中，本申请提供了一种显示设备，该显示设备包括：
显示器，包括屏幕发声模组，所述屏幕发声模组包括多个振子，多个所述振子分布在所述显示器的不同显示区域；与所述显示器连接的控制器，所述控制器被配置为：响应于指示播放视频文件的控制信号，实时检测所述视频文件的音频对应的振子区，得到音频振子区，其中，所述振子区根据声道模式划分；根据所述视频文件中与音频相同时刻的图像判断是否存在人物振子区，所述人物振子区为人物位置对应的振子区；判断全部所述音频振子区中是否存在备选振子区，其中，所述备选振子区的音频与所述人物相匹配；如果全部所述音频振子区中存在所述备选振子区，控制所述人物振子区对应所述人物区域的振子播放所述备选振子区对应的音频。
在一些实施例中，人物区域包括在人脸的预设距离内的区域，以达到人脸附近的振子发声的效果，提高了临场体验。
在一些实施例中，所述控制器还被配置为：根据声道模式将多个振子划分至不同的振子区，所述声道模式包括所述视频文件的声道模式，或所述屏幕发声模组的声道模式，或用户输入的声道模式，从而提高了振子区划分的适应性，丰富了屏幕发声的临场体验场景。
在一些实施例中，本申请实施例提供了一种屏幕发声方法，该方法包括：
响应于指示播放视频文件的控制信号，实时检测所述视频文件的音频对应的振子区，得到音频振子区，其中，所述振子区根据声道模式划分；根据所述视频文件中与音频相同时刻的图像判断是否存在人物振子区，所述人物振子区为人物位置对应的振子区；判断全部所述音频振子区中是否存在备选振子区，其中，所述备选振子区的音频与所述人物相匹配；如果全部所述音频振子区中存在所述备选振子区，控制所述人物振子区对应所述人物区域的振子播放所述备选振子区对应的音频。
在一些实施例中，如果全部所述音频振子区中不存在所述备选振子区，控制所述音频振子区的振子播放对应的音频，使显示设备保留传统发声方式，保障视频文件的顺利播放。
在一些实施例中，人物区域的振子按照第二声音增益系数播放所述备选振子区对应的音频，避免出现声音过小的情况。
在一些实施例中，本申请还提供一种显示装置，包括：有机发光二极管OLED显示结构、粘贴结构、发声背板和至少一个激励器；其中，所述OLED显示结构第一侧用于显示光信号；所述OLED显示结构的第二侧通过所述粘贴结构与所述发声背板的第一侧贴合设置；所述至少一个激励器贴合设置在所述发声背板的第二侧，所述激励器用于使所述发声背板和所述OLED显示结构振动发声。
在一些实施例中，所述粘贴结构包括：多条双面胶带；所述多条双面胶带按照预设规律排列，相邻两条双面胶带之间存在空隙。
在一些实施例中，所述预设规律包括：所述多条双面胶带平行于所述OLED显示装置的长度或者宽度方向，等间隔排列设置。
在一些实施例中，还包括：固定结构，设置在所述发声背板的第二侧，用于支撑和固定所述OLED显示结构和发声背板。
在一些实施例中，所述发声背板的面积小于所述OLED显示结构的面积；其中，在所述OLED显示结构突出于所述发声背板的第一区域内包括所述OLED显示结构的印刷电路板PCB。
在一些实施例中，还包括：缓冲结构，设置在所述第一区域内未设置PCB的位置与所述固定结构之间，用于对所述第一区域内的PCB进行支撑和保护。
在一些实施例中，所述发声背板和所述OLED显示结构振动发声的声音频率分布在低频、中频和高频频段。
在一些实施例中，所述发声背板包括：第一蒙皮、第二蒙皮和中间层；所述第一蒙皮和所述第二蒙皮分别贴合设置在所述中间层两侧；所述中间层包括多个呈六角形排列的蜂窝芯，所述蜂窝芯的六角形截面与所述第一蒙皮和所述第二蒙皮垂直设置，所述蜂窝芯的在第一方向上的拉伸比小于预设阈值。
在一些实施例中，所述空隙的宽度范围为1-100mm。
在一些实施例中，本申请还提供一种可发声OLED屏幕，包括：有机发光二极管OLED显示结构、粘贴结构、发声背板和至少一个激励器；其中，所述OLED显示结构的第一侧用于显示光信号；所述OLED显示结构的第二侧通过所述粘贴结构与所述发声背板的第一侧贴合设置；所述粘贴结构包括：多条双面胶带；所述多条双面胶带平行于所述OLED显示装置的长度或者宽度方向，等间隔排列设置，相邻两条双面胶带之间存在空隙；所述至少一个激励器贴合设置在所述发声背板的第二侧，所述激励器用于使所述发声背板和所述OLED显示结构振动发声。
在一些实施例中，本申请还提供一种显示装置，包括：显示结构、发声背板、支撑结构、多个固定结构和至少一个激励器；其中，所述显示结构的第一侧用于显示，所述显示结构的第二侧与所述发声背板的第一侧贴合；所述发声背板的第二侧和所述支撑结构之间存在空隙；所述多个固定结构用于，通过设置在所述发声背板第二侧的多个固定位置，将所述发声背板与所述支撑结构连接；所述至少一个激励器贴合设置在所述发声背板的第二侧，所述激励器用于使所述发声背板和所述显示结构振动发声。
在一些实施例中，所述固定结构包括：在所述发声背板的所述固定位置处设置的安装沉孔座，与所述固定位置一一对应的螺杆，以及在所述支撑结构上设置的与所述固定位置一一对应的连接件；其中，在所述固定位置处，所述螺杆穿过所述连接件后，与所述安装沉孔座连接。
在一些实施例中，所述连接件包括：硅胶隔离垫。
在一些实施例中，所述多个固定位置设置在所述发声背板的多个预设列上，其中每一个预设列上设置至少一个固定位置，所述多个预设列中的第二预设列设置在所述发声背板的左右方向的中线处。
在一些实施例中，所述支撑结构的面积小于所述发声背板的面积。
在一些实施例中，所述显示装置还包括：保护边框；其中，所述保护边框设置在 所述发声背板的上下方向两侧边处，用于对显示结构和发声背板提供保护。
在一些实施例中，所述激励器的第一侧与所述发声背板的第二侧贴合，所述激励器的第二侧与所述支撑结构的第一侧所设置的发声结构贴合；其中，当所述激励器通过第一侧驱动所述发声背板和所述显示结构振动发声时，所述激励器通过第二侧驱动所述发声结构振动发声。
在一些实施例中，所述发声结构包括：平板振模、多个橡胶折环，以及与所述橡胶折环一一对应的固定螺钉；其中，所述支撑结构设置有空洞位置，在所述空洞位置的一周设置多个固定螺钉，所述平板振模连接所述多个橡胶折环的一端，所述多个橡胶折环的另一端通过一一对应的多个固定螺钉与所述支撑结构连接。
在一些实施例中，所述显示结构包括：OLED显示结构。
在一些实施例中，所述发声背板和所述OLED显示结构振动发声的声音频率分布在低频、中频和高频频段。
本申请提供的显示设备及屏幕发声方法的有益效果包括：
本申请实施例根据声道模式划分振子区，从视频文件中实时获取音频的声道，得到音频振子区，并实时对视频文件的图像进行人物检测，得到与音频同步的人物，如果音频与人物相匹配，则控制人物区域的振子播放音频，提高了屏幕发声的临场效果和用户体验。
附图说明
为了更清楚地说明本申请的实施方式，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1中示例性示出了根据一些实施例的显示设备与控制装置之间操作场景的示意图；
图2中示例性示出了根据一些实施例的显示设备200的硬件配置框图；
图3中示例性示出了根据一些实施例的控制装置100的硬件配置框图；
图4中示例性示出了根据一些实施例的显示设备200中软件配置示意图；
图5中示例性示出了根据一些实施例的显示设备200中应用程序的图标控件界面显示示意图；
图6中示例性示出了根据一些实施例的显示器275的振子分布示意图；
图7a中示例性示出了根据一些实施例的2.0声道模式示意图；
图7b中示例性示出了根据一些实施例的2.1声道模式示意图；
图7c中示例性示出了根据一些实施例的5.1声道模式示意图；
图8a中示例性示出了根据一些实施例的示意图；
图8b中示例性示出了根据又一些实施例的示意图；
图9中示例性示出了根据一些实施例的屏幕发声方法的流程示意图；
图10a为一些实施例中的2.0声道模式下的振子区分布示意图；
图10b为一些实施例中的2.1声道模式下和5.1声道模式下的振子区分布示意图；
图11为一些实施例中的人物分布示意图；
图12为本申请提供的显示装置一实施例的结构示意图；
图13为本申请提供的粘贴结构的详细结构示意图；
图14为本申请提供的发声背板一实施例的结构示意图；
图15为本申请提供的中间层的结构示意图；
图16为本申请提供的发声背板的中间层和蒙皮的贴合结构示意图；
图17为本申请提供的发声背板的中间层剖面结构示意图；
图18为本申请提供的发声背板的蒙皮的结构示意图；
图19为本申请提供的显示装置传导弯曲波时的振幅衰减规律示意图；
图20为本申请提供的显示装置一实施例的结构示意图；
图21为本申请提供的缓冲结构一实施例的结构示意图；
图22为本申请提供的缓冲结构又一实施例的结构示意图；
图23为本申请提供的缓冲结构又一实施例的结构示意图；
图24为本申请提供的发声背板另一实施例的结构示意图；
图25为本申请提供的显示装置一实施例的结构示意图；
图26为本申请提供的缓冲结构的具体剖面放大示意图；
图27为本申请提供的显示装置一实施例的结构示意图；
图28为本申请提供的显示装置一实施例的结构示意图；
图29为本申请提供的固定结构的位置示意图；
图30为本申请提供的显示装置的频率响应对比示意图；
图31为本申请提供的显示装置的失真对比示意图；
图32为本申请提供的保护边框的结构示意图；
图33为本申请实施例提供的发声结构一实施例的结构示意图。
具体实施方式
为使本申请的目的、实施方式和优点更加清楚，下面将结合本申请示例性实施例中的附图，对本申请示例性实施方式进行清楚、完整地描述，显然，所描述的示例性实施例仅是本申请一部分实施例，而不是全部的实施例。
基于本申请描述的示例性实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请所附权利要求保护的范围。此外，虽然本申请中公开内容按照示范性一个或几个实例来介绍，但应理解，可以就这些公开内容的各个方面也可以单独构成一个完整实施方式。需要说明的是，本申请中对于术语的简要说明，仅是为了方便理解接下来描述的实施方式，而不是意图限定本申请的实施方式。除非另有说明，这些术语应当按照其普通和通常的含义理解。
本申请中说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”等是用于区别类似或同类的对象或实体，而不必然意味着限定特定的顺序或先后次序，除非另外注明(Unless otherwise indicated)。应该理解这样使用的用语在适当情况下可以互换，例如能够根据本申请实施例图示或描述中给出那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖但不排他的包含，例如，包含了一系列组件的产品或设备不必限于清楚地列出的那些组件，而是可包括没有清楚地列出的或对于这些产品或设备固有的其它组件。
本申请中使用的术语“模块”，是指任何已知或后来开发的硬件、软件、固件、人工智能、模糊逻辑或硬件或/和软件代码的组合，能够执行与该元件相关的功能。术语“遥控器”，是指电子设备(如本申请中公开的显示设备)的一个组件，通常可在较短的距离范围内无线控制电子设备。一般使用红外线和/或射频(RF)信号和/或蓝牙与电子设备连接，也可以包括WiFi、无线USB、蓝牙、动作传感器等功能模块。例如：手持式触摸遥控器，是以触摸屏中用户界面取代一般遥控装置中的大部分物理内置硬键。术语“手势”，是指用户通过一种手型的变化或手部运动等动作，用于表达预期想法、动作、目的/或结果的用户行为。
图1中示例性示出了根据实施例中显示设备与控制装置之间操作场景的示意图。如图1中示出，用户可通过移动终端300和控制装置100操作显示设备200。在一些实施例中，控制装置100可以是遥控器，遥控器和显示设备的通信包括红外协议通信或蓝牙协议通信，及其他短距离通信方式等，通过无线或其他有线方式来控制显示设备200。在一些实施例中，移动终端300可与显示设备200安装软件应用，通过网络通信协议实现连接通信，实现一对一控制操作的和数据通信的目的。服务器400可以向显示设备200提供各种内容和 互动。示例的，显示设备200通过发送和接收信息，以及电子节目指南(EPG)互动，接收软件程序更新，或访问远程储存的数字媒体库。显示设备200，可以液晶显示器、OLED显示器、投影显示设备显示设备200除了提供广播接收电视功能之外，还可以附加提供计算机支持功能的智能网络电视功能，包括但不限于，网络电视、智能电视、互联网协议电视(IPTV)等。
图2中示例性示出了根据示例性实施例中显示设备200的硬件配置框图。在一些实施例中，显示设备200中包括控制器250、调谐解调器210、通信器220、检测器230、输入/输出接口255、显示器275，音频输出接口285、存储器260、供电电源290、用户接口265、外部装置接口240中的至少一种。显示器275，用于接收源自第一处理器输出的图像信号，进行显示视频内容和图像以及菜单操控界面的组件。显示器275为一种投影显示器，还可以包括一种投影装置和投影屏幕。显示设备200可以通过通信器220与外部控制装置100或内容提供设备之间建立控制信号和数据信号发送和接收。用户接口265，可用于接收控制装置100控制信号。检测器230是显示设备200用于采集外部环境或与外部交互的信号。输入/输出接口255被配置为，可进行控制器250与外部其他设备或其他控制器250之间的数据传输。外部装置接口240可以包括，但不限于如下：可以高清多媒体接口HDMI接口、模拟或数据高清分量输入接口、复合视频输入接口、USB输入接口、RGB端口等任一个或多个接口。调谐解调器210被配置为，通过有线或无线接收方式接收广播电视信号。控制器250，通过存储在存储器上中各种软件控制程序，来控制显示设备的工作和响应用户的操作。CPU处理器254，用于执行存储在存储器中操作***和应用程序指令。图形处理器253，用于产生各种图形对象，如：图标、操作菜单、以及用户输入指令显示图形等。视频处理器270被配置为将接收外部视频信号，进行视频处理。音频处理器280，用于接收外部的音频信号；供电电源290，在控制器250控制下，将外部电源输入的电力为显示设备200提供电源供电支持。用户接口265，用于接收用户的输入信号。
图3示例性示出了根据示例性实施例中控制装置100的配置框图。如图3所示，控制装置100包括控制器110、通信接口130、用户输入/输出接口、存储器、供电电源。控制装置100被配置为控制显示设备200，以及可接收用户的输入操作指令，且将操作指令转换为显示设备200可识别和响应的指令。控制装置100可是一种智能设备。用户输入/输出接口140，其中，输入接口包括麦克风141、触摸板142、传感器143、按键144等其他输入接口中至少一者。输出接口包括将接收的用户指令发送至显示设备200的接口。控制装置100中配置通信接口130，如：WiFi、蓝牙、NFC等模块；存储器190，用于在控制器的控制下存储驱动和控制控制设备200的各种运行程序、数据和应用。供电电源180，用于在控制器的控制下为控制装置100各元件提供运行电力支持。
在一些实施例中，参见图4，将***分为四层，从上至下分别为应用程序(Applications)层(简称“应用层”)，应用程序框架(Application Framework)层(简称“框架层”)，安卓运行时(Android runtime)和***库层(简称“***运行库层”)，以及内核层。
在一些实施例中，如图5中所示，应用程序层包含至少一个应用程序可以在显示器中显示对应的图标控件，如：直播电视应用程序图标控件、视频点播应用程序图标控件、媒体中心应用程序图标控件、应用程序中心图标控件、游戏应用图标控件等。
下文提到的一些设计思路是在如下专利基础上延续过来，将申请号：201911240016.9，申请日：2019-12-03，中国公开专利均以全文引用方式并入文中。
在一些实施例中，图6中示例性示出了根据一些实施例的显示器275的振子分布示意图。为实现屏幕发声功能，显示器275可设置有屏幕发声模组，如图6所示，屏幕发声模组可包括多个振子，图6中示出了振子0--振子17共18个振子，这18个振子均匀分布在显示器275的显示区域。图6仅为示例性说明，在一些实施例中，显示器275的振子数量和振子分布位置可与图6不同。为使屏幕发声的立体效果达到或接近图2中音频输出接口285的播放效果，显示设备200可将屏幕发声模组设置为多种声道模式：2.0声道模式、2.1 声道模式和5.1声道模式，当然，随着技术的进步，屏幕发声模组还可具有其他声道模式。
在一些实施例中，图7a中示例性示出了根据一些实施例的2.0声道模式示意图，如图7a所示，以显示器275的中轴线为分界线，左侧的振子组成左声道，右侧的振子组成右声道，当左声道的振子和右声道的振子同时发出不同的声音时，可具备立体声效果。图7b中示例性示出了根据一些实施例的2.1声道模式示意图，如图7b所示，以显示器275的中轴线为分界线，左侧的部分振子组成左声道，右侧的部分振子组成右声道，显示器275中部的部分振子组成低音声道，当左声道、低音声道和右声道中的至少两个声道同时发出不同的声音时，可具备立体声效果。图7c中示例性示出了根据一些实施例的5.1声道模式示意图，如图7c所示，以显示器275的中轴线、垂直于该中轴线的一条水平线为分界线，左上的部分振子组成左前声道，左下的部分振子组成左后声道，显示器275中部的部分振子组成低音声道，右上的部分振子组成右前声道，右下的部分振子组成右后声道，当左前声道、左后声道、低音声道、右前声道和右后声道中的至少两个声道同时发出不同的声音时，可具备立体声效果。
在一些实施例中，一个音频在会预先设置有声道模式，使得该音频可在预先设置的声道模式进行播放，其中，预先设置的声道模式可包括一种或多种声道模式。显示设备200可设置声道模式，使得用户可在默认声道模式或自选声道模式播放音频。然而，相关技术中，对于一个视频文件，其音频中人声的声道通常没有和人物在视频图像中的位置相关联，导致该视频文件的音频临场效果不佳。
在一些实施例中，图8a中示例性示出了根据一些实施例的示意图，如图8a所示，在用户图形界面的左上角上呈现发声对象“虚拟小人显示室内温度26℃”时，播放声音“室内温度26℃”，造成画面和声音在空间上的分离，给用户带来不良的体验感。
在一些实施例中，图8b中示例性示出了根据又一些实施例的示意图，可以看出，该视频图像中包含两个男士、一个女士共三个人物，同时，该视频图像中还对应有台词“BBB”。以声道模式为2.0为例，女士位于右声道的发声范围，两个男士的位置位于左声道的发声范围，同时，该视频图像中还对应有台词“BBB”。相关技术中，该台词可能由任一个声道或多个声道发声。假设该台词为视频图像中的女士发声，在音频中该台词也恰好为右声道发声，或右声道和低音声道共同发声，则用户体验是右侧的女士在发声，临场效果较佳；而如果该台词音频中为非右声道发声，如左声道发声，或左声道和低音声道共同发声，或全声道共同发声时，则不能带来女士发声的用户体验，临场效果不佳。
为解决上述问题，本申请实施例提供了一种屏幕发声方法，可用于显示设备200，参见图9，该屏幕发声方法可包括以下步骤：
步骤S100：根据声道模式将多个振子划分至不同的振子区。
图10a为一些实施例中的2.0声道模式下的振子区分布示意图，如图10a所示，根据2.0声道模式包括左声道和右声道，显示设备的控制器可将左声道对应的振子划分为第一振子区，将右声道对应的振子划分为第二振子区，第一振子区包括振子0、振子1、振子2、振子3、振子4、振子5、振子6、振子7和振子8，第二振子区包括振子9、振子10、振子11、振子12、振子13、振子14、振子15、振子16和振子17。
图10b为一些实施例中的2.1声道模式下和5.1声道模式下的振子区分布示意图，如图10b所示，根据2.1声道模式包括左声道、低音声道和右声道，显示设备的控制器可将左声道对应的振子划分为第三振子区，将右声道对应的振子划分为第四振子区，将低音声道对应的振子划分为第五振子区。根据5.1声道模式包括左前声道、左后声道、低音声道、右前声道和右后声道，将左前声道、左后声道对应的振子划分为第三振子区，将右前声道和右后声道对应的振子划分为第四振子区，将低音声道对应的振子划分为第五振子区。划分完后，第三振子区包括振子0、振子1、振子2、振子3、振子4、振子6、振子7和振子8，第四振子区包括振子9、振子10、振子11、振子13、振子14、振子15、振子16和振子17，第五振子区包括振子5和振子12。
在一些实施例中，显示设备可设置有默认声道模式，显示设备的控制器可根据默认声道模式预先将振子划分至不同的振子区，用户可更改默认声道模式。视频文件可设置有默认声道模式，当用户向显示设备输入指示播放视频文件的控制信号后，显示设备响应于该指示播放视频文件的控制信号，可获取视频文件的默认声道模式，根据视频文件的默认声道模式划分振子区，其中，指示播放视频文件的控制信号可为打开一个视频文件的信号，如用户点击某个影片的信号。视频文件可以用多个声道模式进行播放，当用户向显示设备输入指示播放视频文件的控制信号后，显示设备可根据显示设备的默认声道模式或视频文件的默认声道模式划分振子区，当用户输入指示变更声道模式的控制信号后，如将声道模式从2.0变更为5.1，显示设备可根据新的声道模式重新划分振子区。
视频文件数量众多，支持的声道模式也各有不同，显示设备的品牌和型号不同，支持的声道模式也会存在差别，本申请提供了不同声道模式下的振子区划分方式，使得在视频文件和显示设备的多种声道模式下都可以进行振子区划分，提高了振子区划分的适应性，丰富了屏幕发声的临场体验场景，
步骤S110：响应于指示播放视频文件的控制信号，实时检测视频文件的音频对应的振子区，得到音频振子区。
当用户向显示设备输入指示播放视频文件的控制信号后，显示设备的控制器可根据该控制信号，实时获取视频文件的音频，检测音频的声道，将音频的声道对应的振子区标记为音频振子区。在一些实施例中，声道模式为2.1，获取视频文件在t1时刻的音频，如果检测到该音频为右声道发声，则将右声道对应的振子区，即第四振子区标记为音频振子区。
步骤S120：根据视频文件中与音频相同时刻的图像判断是否存在人物振子区，人物振子区为人物位置对应的振子区。
响应于用户输入的指示播放视频文件的控制信号，显示设备的控制器可根据视频文件实时获取与音频相同时刻的图像，对图像进行人脸识别，如果识别到人物，将人物的位置与振子区的位置进行比对，将人物对应的振子区标记为人物振子区。进一步的，通过人脸识别还可识别出人物的性别。人脸识别算法可识别出人物的性别。在一些实施例中，声道模式为2.1，获取视频文件在t1时刻的图像，对图像进行人脸识别，得到人物A，性别为女，根据人物A的位置对应的振子区为第三振子区，将第三振子区标记为人物振子区。
步骤S130：判断全部音频振子区中是否存在备选振子区，其中，备选振子区的音频与人物相匹配。
音频振子区的音频可能是人声，也可能是背景声，如音乐声、打斗声等，如果是背景声，则无需判断音频振子区的音频是否与人物相匹配，如果是人声，需要判断音频振子区的音频是否与人物相匹配。在一些实施例中，音频振子区的数量为一个，可对音频振子区的音频进行声纹识别，判断该音频是否为人声，如果该音频为人声，则进一步判断该音频的音色信息是否与人物相匹配，其中，音色信息可包括性别，即判断人声的性别是否与人物的性别一致，如果一致，则将该音频振子区标记为备选振子区。声纹识别算法可识别音频是否为人声，并能识别出人声的性别。
在一些实施例中，音频振子区的数量为多个，可分别对每个音频振子区的音频进行声纹识别，判断该音频是否与人物相匹配。
在一些实施例中，音频振子区为第四振子区，人物振子区为第三振子区，人物振子区的人物A性别为女士，如果第四振子区的音频为女声，则可将第四振子区标记为备选振子区，如果第四振子区的人声与第三振子区的人物性别不一致，则不将第四振子区标记为备选振子区。
步骤S140：如果全部音频振子区中存在备选振子区，控制人物振子区中人物区域的振子播放备选振子区对应的音频。
如果存在备选振子区，表明当前时刻有与图像中的人物匹配的音频，可控制人物振子区对应人物区域的振子播放备选振子区对应的音频。
在一些实施例中，人物区域可为在人脸的预设距离内的区域，其中，预设距离可为相邻两个振子间距的距离，如图11所示，人物的人脸位于振子0-振子4之间，则人物区域可包括振子0-振子4；人物区域还可为人脸和人脸上方的区域，如图11所示，人物区域还可包括振子0和振子1。
在一些实施例中，可控制人物区域的振子按照第二声音增益系数β播放对应的音频，其中，在显示设备的扬声器放大倍数一定的情况下，第二声音增益系数β越大，可使音频的音量放大倍数越大，进而使得音频的音量增大，第二声音增益系数β越小，可使音频的音量放大倍数越小，进而使得音频的音量降低。
第二声音增益系数β可根据人物区域的振子数目进行调整。第二声音增益系数β最大为0db，可使音频的音量放大倍数达到扬声器的放大倍数。在相关技术中，音频由一个声道对应的全部振子发声，而一些实施例中仅由人物区域的振子发声，一些实施例中发声的振子数量可能少于相关技术中发声的振子数量，为避免音频音量过低的情况，一些实施例根据人物区域的振子数目越少，可设置第二声音增益系数β越大，以增大音频的音量放大倍数。
第二声音增益系数β最小可使音频为无声音。根据人物区域的振子数目越少，可设置第二声音增益系数β越小，以避免出现人声的音量过高的情况。
步骤S150：如果不存在人物振子区或全部音频振子区中不存在备选振子区，控制音频振子区的振子播放对应的音频。
如果不存在人物振子区，表明当前时刻的图像中没有人物，可控制音频振子区的振子播放对应的音频。在一些实施例中，可控制音频振子区的振子按照第一声音增益系数α播放对应的音频，其中，第一声音增益系数α最大为0db，可使音频按照扬声器的放大倍数进行放大，第一声音增益系数α最小可使音频为无声音。
如果不存在备选振子区，表明当前时刻没有与图像中的人物匹配的音频，可控制音频振子区的振子播放对应的音频。在一些实施例中，可控制音频振子区的振子按照第一声音增益系数α播放对应的音频。
按照上述实施例中的屏幕发声方法，在图8b所示的场景下，可检测到台词“BBB”对应的振子区为音频振子区，检测到与台词“BBB”相同时刻的图像，即图8b所示的图像存在两个人物振子区，第一个人物振子区是左侧的男士对应的振子区，第二个人物振子区是右侧的女士对应的振子区，最左侧的男士人脸识别不成功，因此，最终得到两个人物振子区。假设台词“BBB”为左声道发声或全声道发声，且为女声，则音频振子区与第一个人物振子区，即男士对应的振子区不匹配，与第二个人物振子区，即女士对应的振子区相匹配，因此，可将台词“BBB”对应的音频振子区标记为第二个人物振子区对应的备选振子区，控制第二个人物振子区中人物区域的振子播放备选振子区对应的音频，即台词“BBB”。
当然，如果假设台词“BBB”为右声道发声，或右声道和低音声道共同发声，则按照上述实施例中的屏幕发声方法，仍是第二个人物振子区中人物区域的振子播放备选振子区对应的音频，即台词“BBB”，与相关技术中右声道发声，或右声道和低音声道共同发声，这两种大面积振子发音方式相比，本申请实施例发声的振子集中在人物区域，临场效果更佳。另外，有时候一个人物对应的备选振子区可能不只一个，按照上述实施例中的屏幕发声方法，发声的振子始终集中在人物区域，临场效果佳。
由上述实施例可见，本申请实施例根据声道模式划分振子区，从视频文件中实时获取音频的声道，得到音频振子区，并实时对视频文件的图像进行人物检测，得到与音频同步的人物，如果音频与人物相匹配，则控制人物区域的振子播放音频，提高了屏幕发声的临场效果和用户体验。
上述显示装置的结构设计方案可以包括如下方式：下文提到的一些设计思路是在如下专利基础上延续过来，将申请号：201910522902.4，申请日：2019-6-17，中国公开专利均 以全文引用方式并入文中。文中“振子”和“激励器”本质上是一样的。
在一些实施例中，图12为本申请提供的显示装置一实施例的结构示意图，如图12所示的显示装置可以是具有可发声OLED屏幕的OLED显示装置，该显示装置包括：OLED显示结构31a、发声背板32a、粘贴结构33a和至少一个激励器34a。其中，OLED显示结构31a的第一侧用于显示光信号，第二侧通过粘贴结构33a与发声背板32a的第一侧贴合设置，至少一个激励器34a贴合设置在发声背板32a的第二侧。所述发声背板32a的表面积等于或小于所述OLED显示结构31a的表面积。
如图12所示显示装置的OLED显示结构31a、发声背板32a和至少一个激励器34a共同用于实现显示装置的发声功能。图12中以至少一个激励器34a包括具体为两个激励器作为示例，其中任一个激励器34a可用于接收待播放的声音对应的电信号，并将电信号转换为机械振动后，将机械振动作用于发声背板32a上。发声背板32a发声背板32a在激励器34a的机械振动的作用下通过模态共振产生弯曲波，发声背板32a上产生的弯曲波以激励器34a和发声背板32a贴合处为中心向四周360度的方向范围扩散。发声背板32a以及发声背板32a所贴合的OLED显示结构31a在发声背板32a中传播的弯曲波的作用下，以图12所示图中的上下方向往复振动从而实现发声。
在一些实施例中由于OLED显示结构31a在单独振动发声时的频率范围有限，因此为了设置发声背板32a，还需要在OLED显示结构31a和发声背板32a之间设置粘贴结构33a，用于将二者固定并传导振动。图13为本申请提供的粘贴结构的详细结构示意图，如图13示出了一种粘贴结构33a的具体实现方式。其中，粘贴结构33a具体是通过多条双面胶带实现，并且这多条双面胶带平行与显示装置的长度或者宽度方向，例如图13中以多条双面胶带均平行于显示装置下侧边缘(也相当于平行于OLED显示结构或者发声背板的下侧边沿)设置，使得粘贴结构33a能够在OLED显示结构31a和发声背板32a之间传动振动。同时，多条双面胶带等间隔排列设置，且相邻两条双面胶带之间存在空隙，所留出的空隙可以作为OLED显示结构31a和发声背板32a之间左右方向贯通的排气开缝。空隙的宽度可以设置在1-100mm之间；在一些实施例中，可以选为2-4mm，以在OLED显示结构31a和发声背板32a之间贴合时，方便排出粘贴结构33a前后粘贴面内的空气，提高粘贴的质量。
因此，一些实施例提供的OLED显示装置，通过粘贴结构在OLED显示结构的第二侧连接了发声背板，能够提高OLED显示结构作为可发声屏幕时，振动发生所发出的声音频率只分布在高频频段的不足，通过发声背板的传导和带动OLED显示结构振动，能够使得OLED显示装置发出的声音的频率分布在低频、中频和高频频段(绘制出的声音频率分布可以是如图4所示的曲线A)，从而在显示装置内无需再设置扬声器/低音炮等装置对OLED显示面板发出的声音进行补偿和修饰，降低了具有可发声的OLED显示面板的显示装置的整体复杂度，在不额外添加扬声器的硬件的情况下，通过贴合设置的发声背板即可实现OLED显示结构发出更多低频段的声音，进而使得OLED显示屏幕能够兼顾更加真实的声场和更轻薄的造型。
在一些实施例中，在一些实施例中提供的发声背板的一种具体实现方式中，发声背板32a具体包括：中间层322a和设置在中间层322a两侧的蒙皮321a，例如，图14为本申请提供的发声背板一实施例的结构示意图，如图14所示，在中间层322a的第一侧和第二侧两侧各设置有蒙皮321a，两层蒙皮321a和中间层322a的表面积相同，或者，两层蒙皮321a可以覆盖中间层322a的至少部分。
在一些实施例中，图15为本申请提供的中间层的结构示意图，如图15所示，一些实施例提供的发声背板32a的中间层322a由多个呈六角形排列的蜂窝芯连接而成，除了位于该结构四周的蜂窝芯，每个蜂窝芯的六个边对应的侧面，分别与其他六个蜂窝芯的对应的侧面相连接。在一些实施例中，图16为本申请提供的发声背板的中间层和蒙皮的贴合结构示意图，如图16所示，在发声背板中，中间层322a所包括的蜂窝芯的截面与蒙皮321a 垂直设置。在一些实施例中，本申请提供的包括蜂窝芯的中间层通过设置六角形蜂窝芯壁的两个平行边与y方向平行，在x方向蜂窝芯壁不存在平行边，使得发声背板在x方向与y方向具有不同传导性能。具体通过调整蜂窝芯截面的六角形拉伸比，实现不同方向的传导性能不同。
在一些实施例中，图17为本申请提供的发声背板的中间层剖面结构示意图。如图17所示，蜂窝芯的六角形截面在x-y方向的拉伸比为d/L。其中，记第一方向为图中的y方向、第二方向为图中的x方向；则d为多个六角形蜂窝芯依次排列时，x方向上每个蜂窝芯的单位长度，所述单位长度d指：多个六角形蜂窝芯依次排列后在x方向的最小长度单位，即多个六角形蜂窝芯在x方向上按照单位长度d的规律重复排列；在图17中单位长度d为六角形的与x周垂直的边③和边⑥之间的距离d；L为多个六角形蜂窝芯依次排列时，y方向上每个蜂窝芯的单位长度，所述单位长度L指：多个六角形蜂窝芯依次排列后在y方向的最小长度单位，即多个六角形蜂窝芯在y方向上按照单位长度L的规律重复排列；在图17中单位长度L为六角形的边①、⑥、⑤和⑦在y方向的距离之和。由于对于标准的六角形，在x方向的拉伸比为0.58:1。则在一些实施例中，为了使得发声背板在不同方向的传导性能不同，则可以将发声背板的中间层中的所有蜂窝芯，均以截面六角形的x方向以预设的拉伸比进行拉伸，使得每个蜂窝芯的六角形界面的拉伸比均小于0.58:1的预设阈值。其中，当拉伸比d/L越小，则说明如图17所示的蜂窝芯的六角形界面沿y方向上有更密集平行壁分布，刚度更强，因此容易通过振动而传导弯曲波；在x方向上六角形蜂窝芯壁的夹角更大，刚度更弱，因此容易吸收弯曲波振动的传导。
因此，如图17所示的中间层通过蜂窝芯拉伸比的设置，实现了发声背板在x方向和y方向的传导性能不同，进而发声背板在传导弯曲波时，在x方向和y方向的振幅衰减规律不同。在一些实施例中，如图17所示的实施例中，当y方向的拉伸比小于0.58:1时，发声背板在x方向对于弯曲波的传导性能弱于其在y方向对于弯曲波的传导性能，能够造成设置如图17所示中间层的发声背板在传输弯曲波时，弯曲波在x方向的振幅衰减大小，大于弯曲波在y方向的振幅衰减大小。
同时，由于蒙皮贴合在中间层两侧设置，因此为了配合中间层在x-y方向上的传导性能，一些实施例提供的中间层中，对于蒙皮的纤维也进行相应的设置。例如，图18为本申请提供的发声背板的蒙皮的结构示意图，如图18所示的蒙皮表面纤维结构示意图，如图18所示的蒙皮结构为x-y方向上的交织纤维结构，其中，平行于y方向且垂直于x方向的纤维的密度，大于平行于x方向且垂直于y方向的纤维的密度。或者，在一些实施例提供的另一种蒙皮的结构中，可以不设置平行于x方向且垂直于y方向的纤维，即，蒙皮为单向纤维结构，所有纤维的方向均平行于y方向且垂直于x方向设置。
因此，如图18所示的蒙皮的结构能够配合中间层在传导，使得发声背板在传导弯曲波时，x方向和y方向的振幅衰减规律不同。在一些实施例中，如图18所示的实施例中，蒙皮的纤维在y方向具有更密集的平行纤维分布，其刚度更强，因此更加容易通过振动而传导弯曲波；而蒙皮的纤维在x方向平行纤维分布的较为稀疏，其刚度更弱，因此不容易通过振动而传导弯曲波。因此，能够使得设置如图17所示中间层、设置如图18所示的蒙皮发声背板在传输弯曲波时，弯曲波在x方向的振幅衰减大小，大于弯曲波在y方向的振幅衰减大小。
在一些实施例中，在上述实施例中，所述的蜂窝芯的材质可以是纸质、芳纶、金属、或其它复合材料。在一些实施例中，蒙皮的材质包括但不限于玻璃纤维、碳纤维、玻璃-碳混合纤维、塑料、轻质铝等。在一些实施例中，第一蒙皮和第二蒙皮厚度可以相同或不同。在一些实施例中，蒙皮的厚度范围为：0.1～0.5mm；或者，蒙皮的厚度范围为0.1～0.18mm。
在一些实施例中，图19为本申请提供的显示装置传导弯曲波时的振幅衰减规律示意图，如图19示出了发声背板在激励器的激励下各方向的振幅衰减大小。其中，在x-y方向上，记图中x＝0，y＝0的P(0,0)点为激励器34a贴合发声背板32a的位置，则发声背板 32a在电磁激励器34a作用下产生的弯曲波以P点为中心向四周扩散，并且发声基板在P点的振幅最大。将某一时刻P点的振幅记为100％*D，则弯曲波在发声背板32a中以P点为中心向四周360度进行扩散时，振幅逐渐衰减，从100％*D逐渐衰减为90％*D、80％*D……。尤其单独针对x方向和y方向，弯曲波在这两个方向传导时，由于中间层的蜂窝芯的拉伸比小于预设阈值且蒙皮在y方向的纤维密度大于x方向的纤维密度，因此，P点处的振幅在x方向的振幅衰减数值以及衰减速度，大于P点处的振幅在y方向的振幅衰减数值以及衰减速度。
在一些实施例中，图20为本申请提供的显示装置一实施例的结构示意图，如图20所示的显示装置在前述任一实施例的基础上，还包括：固定结构35a，用于支撑和固定OLED显示结构31a和发声背板32a，对固定OLED显示结构31a和发声背板32a贴合成的整体提供支撑保护。在具体的实现中，如图20所示的显示装置可以是电视机，固定结构35a又可被称为电视机的中框背板，在固定结构35a之上可以覆盖电视机的后壳。固定结构35a可以由四周具有突起的加强骨架及中间加强梁的薄壁结构围合而成，并且固定结构35a的后方还可以设置有用于安装电视机支架的螺钉孔。
在一些实施例中，在如图20所示的示例中，显示装置的左右两侧各设置两个激励器34a，则位于图20中左侧的两个激励器34a和右侧的两个激励器，分别用于提供右声道和左声道的两种声音信号，本申请各实施例对显示装置内设置的激励器的具体数量不做限定。此外，显示装置的固定结构35a的中空处还可以设置有显示装置的主板37a、电源板36a和屏驱动(TCON)板38a等。
一些实施例提供的显示装置中的发声背板32a上通过缓冲结构与固定结构连接，其中，图21为本申请提供的缓冲结构一实施例的结构示意图，如图21所示，一些实施例提供的固定结构35a并不与发声背板32a完全贴合设置，而是处于二者之间保持一定距离的非接触状态，并通过在发声背板32a四周边缘以及固定结构35a中间的加强纵向梁之间的间隙设置缓冲结构39a，对固定结构35a与发声背板32a进行连接。其中，缓冲结构的材料可以是阻尼双面胶，所有缓冲结构39a朝向固定结构35a的一面均处于同一个平面上，以便与固定结构35a平行粘贴连接。
同时，由于显示装置的发声背板32a的面积小于OLED显示结构31a的面积，在如图21所示的示例中，发声背板32a部分区域突出与OLED显示装置31a，将突出的这一部分区域用虚线框处，并记为第一区域311a。并且OLED显示装置31a在第一区域311a上，设置有印刷电路板312a(Printed Circuit Board，简称：PCB)。可以看出，如果此时在发声背板32a后粘贴设置固定结构35a，则OLED显示结构31a和固定结构35a之间在第一区域将形成一定的空间，这部分空间又刚好位于显示装置的一侧边缘处(通常是下边缘)，一旦用户或者相关人员搬动显示装置时，一旦手握在第一区域之上，由于OLED显示结构31a和固定结构35a之间存在空间，按压的力量将有可能对OLED显示结构31a造成损坏。因此，图22为本申请提供的缓冲结构又一实施例的结构示意图，如图22所示，本申请实施例提供的显示装置，还专门在第一区域311a内未设置PCB312a的位置设置部分缓冲结构39a，并且设置在第一区域311a内的部分缓冲结构的硬度大于设置在第一区域311a之外的缓冲结构的硬度。
图23为本申请提供的缓冲结构又一实施例的结构示意图，如图23所示的界面图中可以看出，设置在OLED显示结构31a和固定结构35a之间的第一区域内的缓冲结构39a，能够对第一区域内的PCB312a进行保护，即使此时用户或者相关人员手握在第一区域之上，可以由OLED显示结构31a和固定结构35a之间设置的缓冲结构39a将压力均匀分散到OLED显示结构31a的整体，从而避免了第一区域受到按压时对OLED显示结构31a以及其上的PCB312a造成破裂等损坏，也能够保证了显示装置整体的安全性能，提高显示装置的使用寿命，进而提高用户体验。
在一些实施例中，在OLED显示结构31a下方包括第一区域311a的基础上，发声背 板32a可以为一个整体，并覆盖整个OLED显示结构31a，(包括下方的第一区域311a，以及第一区域内所设置的PCB312a，覆盖后的结构可以参照图27所示)。或者，图24为本申请提供的发声背板另一实施例的结构示意图，其中，发声背板32a的面积还可以小于OLED显示结构31a的面积，并且可以根据显示装置的发声需要设置多个发声背板，例如图24中，以显示装置在左右两侧设置两个发声背板321a和322a作为示例，每个发声背板分别连接激励器，则发声背板321a和发声背板322a可以分别提供左声道和右声道的声音信号。
在一些实施例中，图25为本申请提供的显示装置一实施例的结构示意图，示出了采用如图24所示的发声背板32a的显示装置的剖面结构，其中，由于发声背板32a的面积小于OLED显示结构31a的面积，因此，在显示结构最上方的区域310内，OLED显示结构31a由于未被发音背板32覆盖，因此OLED显示面板31直接与显示装置的背板连接，连接的方式同样可以是双面胶带粘贴的形式。
在一些实施例中，图26为本申请提供的缓冲结构的具体剖面放大示意图，如图26所示，缓冲结构39a可以具体是图中示出呈门型结构的缓冲粘贴条，同样可以OLED显示结构31a和固定结构35a之间的第一区域内的空间提供支撑保护。
图27为本申请提供的显示装置一实施例的结构示意图，如图27所示的显示装置的可发声屏幕具体可以通过OLED显示屏幕实现。包括：显示结构31b、发声背板32b、支撑结构35b，多个固定结构40b和至少一个激励器34b。其中，显示结构31b的第一侧用于显示光信号，显示结构31b的第二侧与发声背板32b的第一侧贴合设置。至少一个激励器34b贴合设置在发声背板32b的第二侧。
在一些实施例中，显示结构31b、发声背板32b和至少一个激励器34b共同用于实现显示装置的发声功能。其中，每个激励器34b可单独用于驱动显示结构31b和发声背板32b，在图27中以任一个激励器34b作为示例，该激励器可用于接收待播放的声音对应的电信号，并将电信号转换为机械振动后，将机械振动直接作用于发声背板32b上。显示结构31b连同发声背板32b在激励器34b的机械振动的作用下在图中的第一侧和第二侧方向之间发生往复振动，通过模态共振产生弯曲波，弯曲波以激励器34b和发声背板32b贴合处为中心向四周360度的方向范围扩散，从而实现发声。
在一些实施例中，为了防止支撑结构35b对显示装置31b发声背板32b向第一、二侧方向运动产生干扰，在一些实施例提供的显示装置中，支撑结构35b和发声背板32b的第二侧并不直接接触，而是在支撑结构35b和发声背板32b的第二侧之间设置一个空隙50b。同时，设置的多个固定结构40b可以用于将发声背板32b第二侧的多个位置点作为固定位置，将发声背板32b通过这几个固定位置与支撑结构35b连接，其中，固定结构40b具体可以是柔性的浮动式固定结构，使得通过该固定结构40b连接的支撑结构35b和发声背板32b之间能够在保持连接关系的同时，二者并不直接接触，且能够在连接后的相对位置上具有一定的柔性形变，减少支撑结构35b对发声背板32b振动的影响，实现发声背板32b“浮动”在支撑结构35b上的效果，最终在支持发声背板32b的同时，还能够保持发声背板32b在振幅内的***。
图28为本申请提供的显示装置一实施例的结构示意图，其中，通过图28对固定结构40b的具体结构进行说明。如图28所示，对于其中任一个固定位置处的固定结构40b，由设置在发声背板32b第二侧的安装沉孔座401b、与该安装位置对应的螺杆402b，以及在支撑结构35b上与该固定位置对应的连接件403b。安装沉孔座401b的外露表面平面与发声背板32b的表面平齐，则以图28中上方的固定结构40b而言，设置在发声背板32b上的安装沉孔座401b的形状与螺杆402b相匹配，且设置在支撑结构35b上的连接件403b的中空位置形状也与螺杆402b相匹配。则螺杆402b可以穿过连接件403b与安装座沉孔座401b连接并固定，实现螺杆402b的一端与发声背板32b的固定，同时螺杆402b也可以通过连接件403b实现与支撑结构35b的柔性连接，从而通过螺杆402b提供的作用力， 实现发声背板32b与支撑结构35b之间相对位置的浮动固定，并保留了支撑结构35b与发声背板32b之间所存在的空隙50b。
在一些实施例中，连接件403b可以是硅胶隔离垫，或者，连接件403b还可以是工字型，使得该工字型的连接件在通过工字型结构满足固定需求的同时，可以通过硅胶材料实现柔性连接并提供一定的形变，在发声背板32b振动时，最大程度地减小固定结构对发声背板32b振动的影响，尽可能实现发声背板32b在空间内的“自由”振动。在一些实施例中，一些实施例对显示装置所设置的固定结构40b的位置不做限定，在一种具体的实现方式中，图29为本申请提供的固定结构的位置示意图，其中，在发声背板32b的第二侧，多个固定结构40b分别设置在多个预设列上，图中以左侧的第一列、中部的第二列和右侧的第三列作为示例，其中，将中部的第二列可以设置在发声背板32b左右两侧方向的中线320b处，使得第二列的固定结构可以对可发声屏幕在左右两侧声道发出的声音提供一定程度的隔离。
综上，一些实施例提供的显示装置，通过多个浮动式的固定结构将发声背板与支撑结构连接，并保持发声背板和支撑结构之间存在一定距离的空隙，呈现一种“悬浮式”的固定效果，相当于显示结构和发声背板悬浮固定在支撑结构的第一侧上，而支撑结构的第二侧仍然能够与底座连接或者通过安装支架的螺钉孔等方式固定在墙体上，不影响支撑结构以及显示装置的整体设计。一些实施例能够使显示装置的激励器在驱动发声背板和显示结构振动发声时，发声背板整体前后移动以及边缘的自由振动不会受支撑结构的阻止，从而使得发声背板可以在其与支撑结构之间的空隙内振动，进而提高显示装置所设置的可发声屏幕的发声效果，并提高了显示装置的用户体验。
图30为本申请提供的显示装置的频率响应对比示意图、图31为本申请提供的显示装置的失真对比示意图，其中，图30示出了具有可发声屏幕的显示装置所发出的声音的频率响应(声音声压SPL)的对比，其可以看出其它显示装置由于四边固定的单独显示面板屏幕发声而带来频率响应范围窄，而一些实施例提供的显示装置所具有的可发声屏幕由于具有了类似于自由边界振动的模态，降低了支撑结构或者其它物体对屏幕振动的阻碍，可以实现更宽的频率响应。图31示出了THD失真的对比，其他显示装置由于四边固定的显示面板屏幕发声导致在一些频率上所发出的声音的失真值较大，而一些实施例提供的显示装置同样由于降低了对显示屏幕震动的阻碍，可以实现更低的失真。
在一些实施例中，在如图27和图28所提供的显示装置中，支撑结构35b的面积可以小于发声背板32b的面积，支撑结构35b不会覆盖整个发声背板32b；在一些实施例中，其上方可以不设置支撑结构，从而可以将发声背板32b的第二侧直接作为显示装置的外观结构件的一部分，使得显示装置能够更加轻薄，并减少了显示装置整体的重量，进一步丰富了显示装置的使用效果，提高用户体验。
在一些实施例中，本申请实施例提供的显示装置可以是OLED显示装置，则为了对OLED显示装置的OLED显示结构与发声背板进行粘贴，本申请实施例还提供一种粘贴结构，用于将显示结构和发声背板进行贴合设置。
在一些实施例中，由于一些实施例中提供的显示装置的支撑结构的面积小于发声背板的面积，使得支撑结构无法通过全包裹的方式对发声背板提供保护，因此，在一些实施例中显示装置的上下两侧还可以设置保护边框，来对发声背板以及显示结构的边缘处提供支撑与保护。例如，图32为本申请提供的保护边框的结构示意图，其中，以显示装置的下方结构为例，保护边框41b可以通过与发声背板32b内的中间层连接，来对发声背板32b以及显示结构31b的下方提供保护。
在一些实施例中，为例保证了显示装置整体的安全性能，提高显示装置的使用寿命，进而提高用户体验。因此，参考图28所示的结构，设置在下方的保护边框41b还可以与边框下盖351b，以及缓冲结构共同对显示结构31b的下边缘提供保护。
在一些实施例中，在本申请前述任一实施例提供的显示装置中，都针对发声背板与支 撑结构之间设置空隙，让发声背板在第一、二侧方向上获得更大的振动自由度进行说明。然而，在显示装置中，激励器作为驱动发声背板振动发声的激励设备，同样可与支撑结构进行连接，从而利用起激励器第二侧振动能量，提高发声效率。因此，本申请提供的显示装置中，在支撑结构上还设置发声结构，使得激励器在第一侧与发声背板贴合，驱动第一侧的发声背板和显示结构振动发声的同时，所产生的振动还能够驱动第二侧贴合的发声结构振动发声，由于激励器前后振动形式相同，相当于在显示装置的第二侧也设置了一个扬声器，从而实现了对激励器第二侧振动能量的有效利用，进一步提高了显示装置的能效。
在一些实施例中，图33为本申请实施例提供的发声结构一实施例的结构示意图，如图33示出的结构可应用于本申请任一实施例提供的显示装置中。其中，如图33所示的激励器34b可以是显示装置中的任一激励器，则显示装置在其支撑结构35b与激励器34b相对的位置给发声结构预留空洞位置，在这个空洞位置的一周设置有多个固定螺钉354b，平板振模352b连接多个橡胶折环353b的一端，多个橡胶折环353b的另一端均连接一一对应的固定螺钉354b，实现平板振模352b与支撑结构35b的连接。
在一些实施例中，平板振模352b的材料可以是金属、碳纤维、玻璃纤维、塑料或它们组成的蜂窝复合材料。平板振膜352b的厚度范围可以为0.5mm～5mm。因此，当激励器34b的第二侧与平板振模352b贴合设置，使得激励器34b和平板振膜352b、多个橡胶折环353b一起构成一个“声辐射器”的基本结构。则当激励器34b的第一侧通过往复振动的方式带动发声背板32b和显示结构31b振动发声时，激励器34b的第二侧的振动可以通过连接的平板振膜352b振动发声，此时，支撑结构35b也相当于在显示装置的后方设置有扬声器，从而提高激励器34b振动时的能量利用效率，并且增大显示装置整体发出的声音的强度，进而提高了显示装置的能效。
由于以上实施方式均是在其他方式之上引用结合进行说明，不同实施例之间均具有相同的部分，本说明书中各个实施例之间相同、相似的部分互相参见即可。在此不再详细阐述。
本领域技术人员在考虑说明书及实践这里发明的公开后，将容易想到本申请的其他实施方案。本申请旨在涵盖本发明的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本申请的一般性原理并包括本申请未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本申请的真正范围和精神由权利要求的内容指出。以上的本申请实施方式并不构成对本申请保护范围的限定。
为了方便解释，已经结合具体的实施方式进行了上述说明。但是，上述示例性的讨论不是意图穷尽或者将实施方式限定到上述公开的具体形式。根据上述的教导，可以得到多种修改和变形。上述实施方式的选择和描述是为了更好的解释原理以及实际的应用，从而使得本领域技术人员更好的使用实施方式以及适于具体使用考虑的各种不同的变形的实施方式。

Claims (10)

  1. 一种显示设备，包括：
    显示器，包括屏幕发声模组，所述屏幕发声模组包括多个振子，多个所述振子分布在所述显示器的不同显示区域；
    与所述显示器连接的控制器，所述控制器被配置为：
    响应于指示播放视频文件的控制信号，实时检测所述视频文件的音频对应的振子区，得到音频振子区，其中，所述振子区根据声道模式划分；
    根据所述视频文件中与音频相同时刻的图像判断是否存在人物振子区，所述人物振子区为人物位置对应的振子区；
    判断全部所述音频振子区中是否存在备选振子区，其中，所述备选振子区的音频与所述人物相匹配；
    如果全部所述音频振子区中存在所述备选振子区，控制所述人物振子区对应所述人物区域的振子播放所述备选振子区对应的音频。
  2. 根据权利要求1所述的显示设备，所述控制器还被配置为：
    如果不存在所述人物振子区或全部所述音频振子区中不存在备选振子区，控制所述音频振子区的振子播放对应的音频。
  3. 根据权利要求1所述的显示设备，所述判断全部所述音频振子区中是否存在备选振子区，包括：
    判断全部所述音频振子区中是否存在音频为人声的音频振子区；
    如果全部所述音频振子区中存在所述音频为人声的音频振子区，根据所述人声的音色信息，判断所述音频为人声的音频振子区是否为备选振子区。
  4. 根据权利要求1所述的显示设备，所述人物区域包括在人脸的预设距离内的区域。
  5. 根据权利要求1所述的显示设备，所述控制器还被配置为：根据声道模式将多个振子划分至不同的振子区，所述声道模式包括所述视频文件的声道模式，或所述屏幕发声模组的声道模式，或用户输入的声道模式。
  6. 根据权利要求1所述的显示设备，所述根据声道模式将多个所述振子划分至不同的振子区，包括：
    根据所述声道模式为2.0声道模式，将左声道对应的振子划分至第一振子区，将右声道对应的振子划分至第二振子区。
  7. 根据权利要求1所述的显示设备，所述根据所述视频文件的声道模式将多个所述振子划分至不同的振子区，包括：
    根据所述声道模式为2.1声道模式，将左声道对应的振子划分至第三振子区，将右声道对应的振子划分至第四振子区，将低音声道对应的振子划分至第五振子区；或，
    根据所述声道模式为5.1声道模式，将左前声道对应的振子、左后声道对应的振子划分至所述第三振子区，将右前声道对应的振子、将右后声道对应的振子划分至所述第四振子区，将所述低音声道对应的振子划分至所述第五振子区。
  8. 一种显示设备的屏幕发声方法，所述显示设备包括显示器，所述显示器包括屏幕发声模组，所述屏幕发声模组包括多个振子，所述振子分布在所述显示器的不同显示区域，所述方法包括：
    响应于指示播放视频文件的控制信号，实时检测所述视频文件的音频对应的振子区， 得到音频振子区，其中，所述振子区根据声道模式划分；
    根据所述视频文件中与音频相同时刻的图像判断是否存在人物振子区，所述人物振子区为人物位置对应的振子区；
    判断全部所述音频振子区中是否存在备选振子区，所述备选振子区的音频与所述人物相匹配；
    如果全部所述音频振子区中存在所述备选振子区，控制所述人物振子区对应所述人物区域的振子播放所述备选振子区对应的音频。
  9. 根据权利要求8所述的屏幕发声方法，还包括：如果全部所述音频振子区中不存在所述备选振子区，控制所述音频振子区的振子播放对应的音频。
  10. 根据权利要求8所述的屏幕发声方法，所述控制所述人物振子区对应所述人物区域的振子播放所述备选振子区对应的音频，包括：控制所述人物振子区对应所述人物区域的振子按照第二声音增益系数播放所述备选振子区对应的音频。
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