CN111526452A - Display device and sound-emitting screen - Google Patents
Display device and sound-emitting screen Download PDFInfo
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- CN111526452A CN111526452A CN202010310249.8A CN202010310249A CN111526452A CN 111526452 A CN111526452 A CN 111526452A CN 202010310249 A CN202010310249 A CN 202010310249A CN 111526452 A CN111526452 A CN 111526452A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
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- 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
- H04R9/02—Details
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- 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
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Abstract
The application provides a display device and screen that can give out sound, wherein, divide into a plurality of regions through the median with the sound production base plate, and will at least some region and electromagnetic exciter laminating, the bending wave that electromagnetic exciter produced only propagates in the regional inside sound production base plate of this electromagnetic exciter laminating, make display device's the different region of sound production base plate conduct the produced bending wave of electromagnetic exciter in the time of conducting, produced bending wave only conducts and can not influence other regions in regional inside. The application provides a display device and screen that can give sound can improve display device when being given sound production under the electromagnetic exciter effect that different regions correspond, display device is to the discrimination of sound channel, and then improves user experience.
Description
Technical Field
The present application relates to the field of electronic technology, and in particular, to a display device and a sound-emitting screen.
Background
With the continuous development of electronic technology and the continuous improvement of customer demands, display devices are continuously developing towards large size, light weight and thin weight, and the display devices are lighter and thinner as a whole and also need to be internally provided with sound generating devices such as speakers. Due to the limitation of the internal space of the display device, the installation position space reserved for the loudspeaker is small, so that the loudspeaker installed in the display device can only meet the common playing function generally, the sound effect of more multi-channel sound cannot be realized, and the playing performance of the loudspeaker is poor.
In some technologies, the display device uses a "flat panel sound generation technology" to set an electromagnetic exciter behind a displayed picture on the display screen, and under the action of the electromagnetic exciter, the display screen generates sound through bending waves generated by modal resonance. I.e. the display screen in the display device can be used both for display and for sound production instead of a loudspeaker. Therefore, the display device does not need to be provided with a mounting position for the loudspeaker, so that the electronic equipment is designed to be thinner and lighter.
However, in the prior art, when the plurality of electromagnetic exciters arranged in the display device respectively excite the display screen to make a vibration sound, a user cannot clearly distinguish which channel corresponds to which electromagnetic exciter the currently generated vibration belongs to, and thus the degree of distinction of the channels of the display device is poor, which affects the user experience.
Disclosure of Invention
The application provides a display device and a sound-emitting screen to improve the discrimination of the sound channel provided by the display device and further improve the experience of a user.
A first aspect of the present application provides a display device comprising: the display device comprises a display structure, a sounding substrate and a plurality of electromagnetic exciters; the display structure is used for receiving and displaying optical signals, the sounding substrate is attached to the display structure, the sounding substrate is divided into a plurality of areas through a plurality of isolation belts, at least part of the areas are attached to at least one electromagnetic exciter, the sounding substrate comprises a middle layer, and the isolation belts comprise a plurality of grooves formed in the surfaces of the two sides of the middle layer; the electromagnetic exciter is used for generating bending waves at the joint of the sounding substrate, and the bending waves are conducted in the area where the electromagnetic exciter is jointed with the sounding substrate, so that the area and the part of the display structure jointed with the area vibrate and sound.
In this application first aspect first embodiment, the median respectively sets up at least one slot on two surfaces in intermediate level, the crisscross and parallel of slot on the both sides surface of intermediate level, the depth direction of slot is perpendicular to the surface of sound production base plate, the extending direction of slot with the extending direction of median is the same.
In an embodiment of the first aspect of the present application, a depth of the groove is greater than or equal to half a thickness of the sound emitting substrate.
In an embodiment of the first aspect of the present application, the sound emission substrate includes: the first skin, the first adhesive film layer, the middle layer, the second adhesive film layer and the second skin; the first skin, the first adhesive film layer and one side of the middle layer are sequentially attached, and the second skin, the second adhesive film layer and the other side of the middle layer are sequentially attached; the first skin and the second skin are used for wrapping the middle layer, the first film layer is used for connecting the first skin and the middle layer, and the second film layer is used for connecting the second skin and the middle layer; the isolation strips specifically comprise a plurality of grooves arranged on the surfaces of the two sides of the middle layer.
In an embodiment of the first aspect of the present application, the display structure is attached to a side surface of the sound emitting substrate.
In an embodiment of the first aspect of the present application, the intermediate layer is a foam core.
In an embodiment of the first aspect of the present application, the foam core comprises: polymethacrylimide PMI or hard polystyrene.
In an embodiment of the first aspect of the present application, the material of the first skin and the second skin includes: glass fibers, carbon fibers, glass-carbon hybrid fibers, plastics, or lightweight aluminum.
In an embodiment of the first aspect of the present application, the plurality of regions of the sound emission substrate include: five regions located at the upper left, upper right, left, right, and middle of the display device.
A second aspect of the present application provides a soundable screen comprising: a display structure and a sound substrate; the display structure is used for receiving and displaying optical signals, and the sounding substrate is attached to the display structure; the sounding substrate is divided into a plurality of areas through a plurality of isolation belts, the sounding substrate comprises a middle layer, and the isolation belts comprise a plurality of grooves arranged on the surfaces of the two sides of the middle layer; the isolation belt is provided with at least one groove on each of two surfaces of the middle layer, the grooves on the surfaces of two sides of the sounding substrate are staggered and parallel, the depth direction of the grooves is perpendicular to the surface of the sounding substrate, and the extending direction of the grooves is the same as that of the isolation belt; the depth of the groove is larger than or equal to half of the thickness of the sounding substrate.
In summary, according to the display device and the screen capable of generating sound provided by the application, the sound substrate is divided into a plurality of areas by the isolation belt, at least part of the areas are attached to the electromagnetic exciter, the bending wave generated by the electromagnetic exciter is only transmitted in the sound substrate inside the area attached to the electromagnetic exciter, so that when different areas of the sound substrate of the display device transmit the bending wave generated by the electromagnetic exciter, the isolation belt locally changes the isotropic mechanical transmission characteristic of the original homogeneous sound substrate, generates local anisotropy at the groove division position, controls the vibration transmission range of the bending wave in a partition mode, attenuates the vibration bending wave transmitted outside the area, controls the modal vibration in a required range, and enables the bending wave to be transmitted only inside the areas without affecting other areas. Therefore, when the display device is used for sounding under the action of the electromagnetic exciters corresponding to different areas, the degree of distinguishing the sound channels by the display device is improved, so that a user can distinguish the sound channels corresponding to the sounds sent by the different electromagnetic exciters, and the user experience is improved.
Simultaneously, but display device and vocal screen that this application provided can also make display device set up more electromagnetic exciter and realize playing the sound signal of more sound channels, overcome because of the bending wave that electromagnetic exciter arouses almost unlimited the diffusion lead to the sound separation degree low can't realize more sound channel sound signal not enough on whole panel. In addition, the median for dividing different regions of sound production base plate that this application provided is realized by the slot that sets up at sound production base plate both sides surface, because of the simple structure of slot, the preparation of being convenient for, is favorable to the popularization and the application of this structure, still has the strong characteristics of design flexibility simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural view of a display device having a speaker;
FIG. 2 is a schematic diagram of a display device having an electromagnetic exciter;
FIG. 3 is a schematic cross-sectional view of a display device;
FIG. 4 is a schematic view of a disassembled structure of a display device;
FIG. 5 is a schematic diagram showing the amplitude distribution of a bending wave generated by an electromagnetic exciter in a display device during propagation;
fig. 6 is a schematic structural diagram of an embodiment of a display device provided in the present application;
fig. 7 is a schematic structural diagram of an embodiment of a sound substrate provided in the present application;
FIG. 8 is an exploded view of an embodiment of a display device;
FIG. 9 is a schematic structural diagram of an embodiment of an interlayer provided herein;
FIG. 10 is a schematic view of a state of the sound outputting substrate provided in the present application;
fig. 11 is a schematic view of another state of the sound-emitting substrate provided in the present application;
FIG. 12 is a diagram illustrating an embodiment of an application scenario of a display device provided in the present application;
fig. 13 is a schematic diagram of another embodiment of an application scenario of a display device provided in the present application;
fig. 14 is a schematic structural diagram of an embodiment of an isolation strip provided on a sound substrate according to the present application;
fig. 15 is a schematic structural diagram of an embodiment of a divided area of a sound substrate provided in the present application;
fig. 16 is a schematic structural diagram of another embodiment of a separation strip provided on a sound substrate according to the present application;
fig. 17 is a schematic structural diagram of another embodiment of a region partitioned by a sound substrate provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of a display device with a speaker, and the display device shown in fig. 1 takes a television 11 as an example, and the television 11 includes: a display screen 12 and a plurality of speakers 13; wherein, a plurality of speakers are disposed behind the display screen 12 inside the tv 11 in such a way that dolby atmos2.1.2 or 3.0.2 has two-way sky sound effect, for example, the speaker 131 provides a left channel sound signal, the speaker 132 provides a right channel sound signal, the speaker 133 provides a center channel sound signal, the speaker 134 provides a left side sky sound signal, and the speaker 135 provides a right side sky sound signal.
With the development of the demand of users for display devices in the market, more and more key components of display screens, base frames and the like in the display devices can be realized with thinner thickness, and the display devices also need to provide High-Fidelity (Hi-Fi) sound signals, and the High-Fi sound signals such as four-channel surround, 5.1 channel, 5.1.2 channel and 7.1.2 channel are provided by more speakers, which requires that the inside of the television set 11 shown in fig. 1 needs to reserve space for more speakers in the originally limited space, and sometimes the sound effect has to be sacrificed or the thickness of the display devices has to be increased.
Therefore, some display devices in the art are provided with a "sound-generating screen" in order to achieve both the light weight and the sound effect, for example, fig. 2 is a schematic structural diagram of a display device with electromagnetic exciters, and a plurality of electromagnetic exciters disposed on the rear side of the display screen in the display device shown in fig. 2 can respectively excite the whole display screen to generate sound. For example, electromagnetic exciter 131 provides a left channel acoustic signal, electromagnetic exciter 132 provides a right channel acoustic signal, and electromagnetic exciter 133 provides a center channel acoustic signal. Since each electromagnetic exciter directly excites the whole display screen to sound, and the whole display screen has the same anisotropic propagation characteristics, the sound-emitting area of each electromagnetic exciter cannot be subdivided, and the display device can only be provided with three or less excited sound-emitting areas. For each electromagnetic actuator, reference is made to fig. 3 and 4, fig. 3 being a schematic cross-sectional view of a display device; fig. 4 is a disassembled structure diagram of a display device. Wherein, this display device's display screen includes: a display structure 31 and a sound substrate 32, the display structure 31 being operable to receive and display video or image content in the form of optical signals; the acoustic substrate 32 emits sound by bending waves emitted by modal resonance by the electromagnetic actuator 33. That is, the display structure 31 in the display device can be used for both display and sound generation in place of the speaker. Therefore, the display device does not need to be provided with a mounting position for the speaker, and the speaker can be replaced by a corresponding number of electromagnetic exciters 33, so that the display device can provide stronger sound effect while being designed to be thinner.
However, in the conventional display device shown in fig. 3 to 4, since the sound substrate 32 is provided as a whole, the sound substrate 32 is caused to generate sound by the bending wave generated by the modal resonance by operating each electromagnetic actuator 33 so as to act on the same sound substrate 32 regardless of the number of electromagnetic actuators 33 provided at each position of the sound substrate 32 in the display device. For example, fig. 5 is a schematic diagram of the amplitude distribution of the bending wave generated by the electromagnetic exciter in the display device during propagation, and fig. 5 shows a schematic diagram of the amplitude of the bending wave propagating in the sounding substrate 32, in which the sounding substrate 32 generates the bending wave by the electromagnetic exciter 33, and the bending wave generated on the sounding substrate 32 spreads around the joint of the electromagnetic exciter 33 and the sounding substrate 32, and covers the whole sounding substrate 32. The darker the color on the sound emission substrate 32 in the figure, the larger the amplitude of the bending wave at that position in the upward direction of the observation direction; the lighter the color, the larger the amplitude of the bending wave at that position downward in the observation direction. Meanwhile, the frequency of bending wave A in FIG. 4 is 200Hz, the frequency of bending wave B is 1000Hz, and the frequency of bending wave C is 10000 Hz.
As can be seen from fig. 5, when the bending wave spreads in the sound substrate, the amplitude of the bending wave in each direction is not greatly attenuated regardless of the change in the frequency of the bending wave, and even at the rightmost position away from the electromagnetic exciter 33 in the figure, the amplitude of the bending wave is substantially the same as the amplitude in the vicinity of the electromagnetic exciter 33. That is, the bending wave generated by the sounding substrate 32 under the action of the electromagnetic exciter 33 has a relatively uniform amplitude distribution at all positions when propagating in the sounding substrate 32, resulting in the sounding substrate emitting a sound with a relatively similar intensity as a whole. When the user hears the sound that display device sent, the intuitional sensation of bringing is that all positions of whole screen are all giving out similar sound, even display device has set up 5, 7 or more electromagnetic exciter encourage the vibration of sound production base plate respectively, the user can't obviously distinguish the sound channel that the vibration that present sound production base plate produced belongs to which electromagnetic exciter corresponds, and then has leaded to the degree of distinction of the sound channel of display device when the sound production relatively poor, influence electronic equipment user's experience.
Therefore, the application provides a display device and screen that can give out sound divides display device's vocal base plate into a plurality of regions through the median, at least part region and the laminating of electromagnetic exciter in a plurality of regions, the bending wave that electromagnetic exciter produced in at least part region only propagates in the vocal base plate of this regional inside for display device's vocal base plate different regions can be relatively alone the vocal under the excitation of this regional electromagnetic exciter, thereby improve the discrimination to the sound channel when the effect of the electromagnetic exciter that the vocal base plate corresponds by different sound channels is produced, make the user distinguish the sound channel that the sound that different electromagnetic exciter sent corresponds, can also make display device set up more electromagnetic exciters and realize the sound signal of playing more sound channels, and then improved display device's user experience.
The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 6 is a schematic structural diagram of an embodiment of a display device provided in the present application, where the display device shown in fig. 6 includes: a display structure 31, a sound-emitting substrate 32 and a plurality of electromagnetic actuators 33. In the example of fig. 6, the display structure 31 is attached to one side of the sound substrate 32, and the plurality of electromagnetic actuators 33 are attached to the other side of the sound substrate 32, where the number of electromagnetic actuators 33 is two, and the electromagnetic actuator 332 corresponds to the left channel sound signal of the display device, and the electromagnetic actuator 331 corresponds to the right channel sound signal of the display device. The surface area of the sound emission substrate 32 is equal to or smaller than the surface area of the display structure 31.
In a first aspect, the display structure 31 of the display device is used to implement a display function of the display device for receiving and displaying light signals. Specifically, the present embodiment provides a display structure 31 including: the Liquid crystal display (Liquid crystal display, abbreviated as LCD), the Organic Light-Emitting Diode (OLED), the laser projection image display film or the touch control function film, wherein the image display film specifically comprises a film having optical microstructures such as fresnel, bar grating or microlens array. In the present embodiment, the display structure is illustrated as a rectangular structure, but is not limited thereto, and for example, the display structure may also be an arc structure.
In the second aspect, any of the electromagnetic actuators 33 in the display device can realize the sound generating function of the display device together with the display structure 31 and the sound generating substrate 32. Taking the electromagnetic exciter 331 as an example, the electromagnetic exciter 331 is configured to receive an electrical signal corresponding to a sound to be played, convert the electrical signal into mechanical vibration, and then apply the mechanical vibration to the sound substrate 32. The sound substrate 32 generates bending waves by mode resonance under the action of mechanical vibration of the electromagnetic exciter 331, and the bending waves generated on the sound substrate 32 are diffused in a direction range of 360 degrees around the joint of the electromagnetic exciter 331 and the sound substrate 32. The sound substrate 32 and the display structure 31 to which the sound substrate 32 is bonded vibrate reciprocally in the vertical direction of the cross-sectional view shown in fig. 6 by the bending wave propagating through the sound substrate 32, thereby generating sound. Alternatively, the electromagnetic actuators described in the embodiments of the present application may also include, but are not limited to, single or multiple electromagnetic type, piezoelectric type, magnetostrictive type, and any type and structure of actuator that will be used to excite bending waves in the future, among other possible implementations.
In particular, the sound emission substrate 32 provided in the present embodiment is further divided into a plurality of different regions by the isolation band, at least some of the regions are attached to the electromagnetic exciter, the bending wave generated by the electromagnetic exciter propagates only in the region attached to the electromagnetic exciter, and the bending wave propagating through the isolation band to other regions is attenuated by the isolation band. That is, the sound emission substrate 32 of the present embodiment can realize the performance of sound emission in different areas, and reduce the mutual influence when sound is emitted simultaneously between the areas. It is understood that the number of the areas divided by the sound substrate 32 in the present embodiment may be greater than or equal to the number of the at least one electromagnetic exciter, for example, the sound substrate 32 is divided into 10 areas, and 5 areas of the 10 areas are respectively attached to 5 electromagnetic exciters.
In a specific implementation manner, fig. 7 is a schematic structural diagram of an embodiment of the sound substrate provided in the present application, and as shown in fig. 6 and 7, the sound substrate 32 provided in the present embodiment specifically includes: first skin 321, first adhesive film layer 322, intermediate layer 323, second adhesive film layer 324, and second skin 325. The first skin 321 and the second skin 325 are used for wrapping and fixing the intermediate layer 323, and the surface areas of the first skin 321, the intermediate layer 323 and the second skin 325 are the same. The first adhesive film layer 322 is arranged between the first skin 321 and the middle layer 323 in a fitting manner and used for adhering the first skin 321 and the middle layer 323; the second adhesive film layer 322 is arranged between the second skin 325 and the middle layer 323 in a fitting manner and used for adhering the second skin 325 and the middle layer 323. For example, when the intermediate layer 323 is a foam core material, the intermediate layer 323 has more holes, so that the first skin 321 and the second skin 325 can be adhered by the first adhesive film layer 322 and the second adhesive film layer 324; if the middle layer 323 is made of other flat materials without holes, the first skin 321 and the second skin 325 may be directly adhered to two surfaces of the middle layer 323.
Fig. 8 is a schematic diagram of an exploded structure of an embodiment of a display device provided in the present application, where the display device employs a sound substrate as shown in fig. 7, and the sound substrate may be attached to display structure 31 through one surface of first skin 321 and attached to a plurality of electromagnetic exciters through one surface of second skin 325.
More specifically, the sound production substrate provided by the embodiment of the application is further divided into a plurality of areas through isolation belts, and each area is attached to at least one electromagnetic exciter. For example, in the example shown in fig. 6, taking the display device having the left channel and right channel playback functions as an example, the electromagnetic exciter 332 provided in the display device is used for generating a left channel sound signal, and the electromagnetic exciter 331 is used for generating a right channel sound signal, in this case, both electromagnetic exciters are attached to and provided on the same side of the sound emission substrate 32. In order to distinguish the conducted left channel sound signal from the conducted right channel sound signal, the sound substrate 32 may divide the intermediate layer 323 into two regions, i.e., a left region corresponding to the electromagnetic actuator 332 and a right region corresponding to the electromagnetic actuator 331, by the isolation band 34.
Alternatively, the isolation band described in the embodiment of the present application includes a plurality of grooves 341 provided on both side surfaces of the intermediate layer 323 of the sound substrate 33, wherein at least one groove 341 is provided on each side surface, for example, in the example shown in fig. 6, the isolation band 34 is composed of three grooves 341 on the upper side of the intermediate layer 323 and three grooves 341 on the lower side of the intermediate layer 323, each groove 341 does not penetrate the intermediate layer 323, the depth of the groove 341 may be greater than or equal to half of the thickness of the sound substrate 323, and preferably, the depth of the groove 341 is 80% of the thickness of the sound substrate. Meanwhile, as can be seen from the exploded view shown in fig. 8, the grooves 341 of the sound substrate disposed on the two side surfaces of the intermediate layer 323 are also disposed in a staggered and parallel manner, the depth direction of the grooves 341 is perpendicular to the surface of the intermediate layer 323, and the extending direction of each groove 341 is the same as the extending direction of the isolation strip. Fig. 9 is a schematic structural diagram of an embodiment of the intermediate layer provided by the present application, in which a cross-sectional structure of the isolation strip 34 used for isolating different regions in the intermediate layer is shown, and it can be seen that the trenches 341 staggered on two sides of the intermediate layer in the isolation strip 34 divide the intermediate layer into a left part and a right part in the figure, and the structure of the intermediate layer itself is not broken, and can still play an integral supporting role.
Therefore, in the display device shown in fig. 6, since the sound substrate 32 is provided with the isolation strip 34 in the intermediate layer 323, so that the sound substrate 32 is divided into two parts, i.e., left and right parts, taking the electromagnetic exciter 332 corresponding to the left channel sound signal as an example, and fig. 10 is a schematic diagram of a state of the sound substrate provided in this application, it can be seen that, when the electromagnetic exciter 332 gives an upward force to the sound substrate 32 in a process of driving the sound substrate 32 to vibrate by mechanical vibration, an area of the sound substrate 32 located on the left side of the isolation strip 34 is deformed upward by the force. Meanwhile, due to the existence of the isolation belt 34, the isolation belt 34 is low in rigidity and has the mechanical conduction characteristic of strength anisotropy, and the strength perpendicular to the direction opposite to the groove extension is lower than the strength in the direction parallel to the groove, so that the isolation belt 34 can play a role in damping and attenuating vibration propagation on two sides as a whole, even if the left area of the isolation belt 34 deforms upwards, the isolation belt 34 cannot propagate the upwards deformation to the right area, at the moment, the right area keeps a non-deformation state or a deformation state is extremely small, a gradient difference of corresponding distribution of bending wave excitation between the left area and the right area is formed, and a user can distinguish sounds emitted by the left area and the right area more easily. In contrast, fig. 11 is a schematic view of another state of the sound substrate provided by the present application, which shows that when the electromagnetic actuator 332 applies a downward force to the sound substrate 32, the region of the sound substrate 32 located at the left side of the isolation strip 34 may deform downward while the region at the right side remains in an undeformed state or in a deformed state is extremely small, so that a gradient difference of the corresponding distribution of bending wave excitation between the left and right regions is formed, so that a user can distinguish sounds emitted from the left and right regions more easily.
Fig. 12 is a schematic diagram of an application scenario of the display device according to the present application, when the electromagnetic exciter 332 corresponding to the left channel of the display device drives the sound substrate 32 and the display structure 31 to move up and down to generate bending waves by means of mechanical vibration, the sound substrate 32 and the display structure 31 are located in the left area of the isolation strip 34 to vibrate and sound due to the existence of the isolation strip 34, and the area located on the right side of the isolation strip does not emit a loud sound, so that the user can obviously hear the sound from the left side of the display screen, but basically cannot hear the sound from the right side of the display screen, and thus the sound of the left channel corresponding to the electromagnetic exciter 332 can be more clearly distinguished. Similarly, when the electromagnetic exciter 331 corresponding to the right channel of the display device drives the display structure of the sound substrate 32 to move up and down to generate bending waves for sounding, the sound substrate 32 and the display structure 31 are located in the right area of the isolation band 34 to make vibration sounding, and the area located on the left side of the isolation band does not make loud sound, so that the user can hear the sound obviously coming from the right side of the screen and can not hear the sound on the left side of the display screen basically, and the sound of the right channel corresponding to the electromagnetic exciter 331 can be more clearly distinguished.
In summary, in the display device provided in this embodiment, the acoustic substrate of the display device is divided into a plurality of regions by the isolation strips, at least some regions are bonded to the electromagnetic exciter, and the bending wave generated by the electromagnetic exciter propagates only in the acoustic substrate inside the region to which the electromagnetic exciter is bonded, so that when bending waves generated by the electromagnetic exciter are conducted in different regions of the acoustic substrate of the display device, the isolation strips locally change the isotropic mechanical conduction characteristics of the homogeneous acoustic substrate, and generate local anisotropy at the groove division, the bending wave vibration propagation range is controlled in a partitioned manner, the vibration bending wave propagation outside the region is attenuated, and the modal vibration is controlled in a desired range, so that the bending waves are conducted only inside the region without affecting other regions. Therefore, when the display device is used for sounding under the action of the electromagnetic exciters corresponding to different areas, the distinguishing degree of the display device for the sound channels is improved, so that a user can distinguish the sound channels corresponding to the sounds emitted by the different electromagnetic exciters, the display device can be provided with more electromagnetic exciters to play sound signals of more sound channels, and the defect that in the existing display device shown in fig. 2, the sound signals of more sound channels cannot be realized due to the fact that the bending waves excited by the electromagnetic exciters are almost spread on the whole panel without limitation is overcome. Illustratively, the display device may be realized by providing a plurality of electromagnetic actuators such as: 2.0 sound channels (which can be used for representing 2 sound channels in total for the left and the right), 2.1 sound channels (which can be used for representing 2 sound channels in total for the left and the right and 1 subwoofer sound channel), 3.0 sound channels (which can be used for representing 3 sound channels in total for the left, the right and the center), 3.1 sound channels (which can be used for representing 3 sound channels in total for the left, the right and the center and 1 subwoofer sound channel), or Dolby Atmos2.1.2 sound channels with left and right sky sound channels, and the like, thereby improving the user experience of the electronic equipment with the display device. In addition, the median for dividing different regions of sound production base plate that this application provided is realized by the slot that sets up at sound production base plate both sides surface, because of the simple structure of slot, the preparation of being convenient for, is favorable to the popularization and the application of this structure, still has the strong characteristics of design flexibility simultaneously, and the trend of slot, distribution can be according to the different regions that different sound production base plates divided and set up in a flexible way and adjust.
Alternatively, in order to provide an isolation strip in the middle layer of the sound substrate, the middle layer of the sound substrate provided in the embodiments of the present application may be a foam core material. For example, the foam core material may be Polymethacrylimide (PMI), hard polystyrene, or other hard foamed plastics.
Optionally, in the above embodiments, the material of the first skin and the second skin includes, but is not limited to, glass fiber, carbon fiber, glass-carbon mixed fiber, plastic, lightweight aluminum, and the like. Alternatively, the first skin and the second skin may be the same or different in thickness. Optionally, the thickness ranges of the first skin and the second skin are: 0.1 mm-0.7 mm; alternatively, the first skin and the second skin preferably have a thickness in the range of 0.12mm to 0.2 mm.
Alternatively, in the embodiment shown in fig. 7, the structure of the sound substrate 32 includes: first skin 321, first adhesive film layer 322, intermediate layer 323, second adhesive film layer 324, and second skin 325 are used as an example, in other possible implementations, if the material characteristics of display structure 31 are suitable, display structure 31 may also serve as first skin 321 directly in sound substrate 32, and display structure 31 is attached to one side surface of sound substrate 32, that is, display structure 31 may be directly connected to intermediate layer 323 through first adhesive film layer 322, so as to simplify the structure of the display device, where first skin 321 served by display structure 31 may specifically be a display film having an optical microstructure, such as a fresnel projection optical film.
Further, in the embodiments shown in fig. 6 to 12 of the present application, the display device is provided with two electromagnetic exciters, and the sounding substrate of the display device is divided into two regions corresponding to the electromagnetic exciters one by one to sound respectively, which is taken as an example to describe, it can be understood that each region of the display device may be attached to more than one electromagnetic exciters, and all the electromagnetic exciters in the region jointly act on the region to sound in a vibrating manner; also, the plurality of regions may be set according to different sound signal effects.
For example, fig. 13 is a schematic diagram of another embodiment of an application scenario of the display device provided in the present application, in the display device shown in fig. 13, 5 electromagnetic exciters are disposed in a dolby Atmos 3.0.2 or 2.1.2 sky sound effect manner, wherein the electromagnetic exciters 141 are disposed behind the left side of the display device for providing an acoustic signal of a Front Left (FL) channel, the electromagnetic exciters 142 are disposed behind the right side of the display device for providing an acoustic signal of a Front Right (FR) channel, the electromagnetic exciters 143 are disposed behind the middle of the display device for providing an acoustic signal of a front left (FR) channel, the electromagnetic exciters 144 are disposed behind the top left side of the display device for providing an acoustic signal of a top left (FTL) channel, the electromagnetic exciters 145 are disposed behind the top right of the display device for providing a top right (fortt right, for short: FTR) sound signals, which may also be referred to as sky sound signals.
Therefore, the sound substrate in the display device shown in fig. 13 needs to be divided into at least 5 regions, and the regions correspond to the 5 electromagnetic drivers.
For example, fig. 14 is a schematic structural diagram of an embodiment of a sound substrate provided with a separation strip according to the present application, and when the separation strip is provided in the intermediate layer 323 of the sound substrate shown in fig. 14, 3 separation strips may be provided: 3401, 3402 and 3403, the intermediate layer 323 of the sound emission substrate is divided into at least five regions: region 3231 at the left of the display device, region 3232 at the right of the display device, region 3233 at the middle of the display device, region 3234 at the upper left of the display device, and region 3235 at the upper right of the display device. More specifically, fig. 15 is a schematic structural diagram of an area of the sound-emitting substrate partition according to an embodiment provided by the present application, when the partition is performed by 3 isolation bands as shown in fig. 14, the electromagnetic exciter 141 can drive the sound-emitting substrate corresponding to the area 3231 to vibrate and sound, the electromagnetic exciter 142 can drive the sound-emitting substrate corresponding to the area 3232 to vibrate and sound, the electromagnetic exciter 143 can drive the sound-emitting substrate corresponding to the area 3233 to vibrate and sound, the electromagnetic exciter 144 can drive the sound-emitting substrate corresponding to the area 3234 to vibrate and sound, and the electromagnetic exciter 145 can drive the sound-emitting substrate corresponding to the area 3235 to vibrate and sound.
Alternatively, fig. 16 is a schematic structural diagram of another embodiment of the isolation strip provided on the sound substrate provided in the present application, and as shown in fig. 16, when the isolation strip is provided on the intermediate layer 323 of the sound substrate, 4 isolation strips may be provided: 3401, 3402, 3403 and 3403, the intermediate layer 323 of the sound emission substrate is also divided into five regions. Fig. 17 is a schematic structural diagram of another embodiment of the area where the sound substrate is divided according to the present application, when the sound substrate is divided by 4 isolation bands as shown in fig. 16, the electromagnetic exciter 141 can drive the sound substrate corresponding to the area 3231 to vibrate and sound, the electromagnetic exciter 142 can drive the sound substrate corresponding to the area 3232 to vibrate and sound, the electromagnetic exciter 143 can drive the sound substrate corresponding to the area 3233 to vibrate and sound, the electromagnetic exciter 144 can drive the sound substrate corresponding to the area 3234 to vibrate and sound, and the electromagnetic exciter 145 can drive the sound substrate corresponding to the area 3235 to vibrate and sound.
In summary, the display device provided by the embodiment of the present application divides the sound substrate of the display device into a plurality of regions through the isolation strip, and the bending wave generated by the electromagnetic exciter in each region is only transmitted in the sound substrate in the region, especially after the sky sound of the display device is considered, the effect and the variety of the sound signal provided by the display device can be enriched, for example, a wider variety of stereo sound is realized, and the user experience is improved. And more electromagnetic exciter need the sound production base plate to divide into more regions, and the median that this application provided can realize designing and realizing through simple slot, can also reduce the required time of design complexity and design, human cost.
The foregoing is a preferred embodiment of the present application, which is not intended to be limiting in any way, and any simple modifications, equivalent variations and modifications made to the foregoing embodiment according to the technical spirit of the present application are within the scope of the present application.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A display device, comprising:
the display device comprises a display structure, a sounding substrate and a plurality of electromagnetic exciters;
the display structure is used for receiving and displaying optical signals, the sounding substrate is attached to the display structure, the sounding substrate is divided into a plurality of areas through a plurality of isolation belts, at least part of the areas are attached to at least one electromagnetic exciter, the sounding substrate comprises a middle layer, and the isolation belts comprise a plurality of grooves formed in the surfaces of the two sides of the middle layer;
the electromagnetic exciter is used for generating bending waves at the joint of the sounding substrate, and the bending waves are conducted in the area where the electromagnetic exciter is jointed with the sounding substrate, so that the area and the part of the display structure jointed with the area vibrate and sound.
2. The display device according to claim 1,
the isolation belt is provided with at least one groove on each of two surfaces of the middle layer, the grooves on the two side surfaces of the middle layer are staggered and parallel,
the depth direction of the groove is perpendicular to the surface of the sound production substrate, and the extending direction of the groove is the same as the extending direction of the isolation belt.
3. The display device according to claim 2,
the depth of the groove is larger than or equal to half of the thickness of the sounding substrate.
4. The display device according to claim 3,
the sound emission substrate includes: the first skin, the first adhesive film layer, the middle layer, the second adhesive film layer and the second skin; the first skin, the first adhesive film layer and one side of the middle layer are sequentially attached, and the second skin, the second adhesive film layer and the other side of the middle layer are sequentially attached;
the first skin and the second skin are used for wrapping the middle layer, the first film layer is used for connecting the first skin and the middle layer, and the second film layer is used for connecting the second skin and the middle layer;
the isolation strips specifically comprise a plurality of grooves arranged on the surfaces of the two sides of the middle layer.
5. The display device according to claim 3, wherein the display structure is attached to a surface of one side of the sound emitting substrate.
6. The display device according to claim 4 or 5,
the middle layer is a foam plastic core material.
7. The display device according to claim 6,
the foam core material comprises: polymethacrylimide PMI or hard polystyrene.
8. The display device according to claim 4 or 5,
the material of first skin and second skin includes: glass fibers, carbon fibers, glass-carbon hybrid fibers, plastics, or lightweight aluminum.
9. The display device according to claim 1,
the plurality of regions of the sound emission substrate include: five regions located at the upper left, upper right, left, right, and middle of the display device.
10. A soundable screen, comprising:
a display structure and a sound substrate;
the display structure is used for receiving and displaying optical signals, and the sounding substrate is attached to the display structure;
the sounding substrate is divided into a plurality of areas through a plurality of isolation belts, the sounding substrate comprises a middle layer, and the isolation belts comprise a plurality of grooves arranged on the surfaces of the two sides of the middle layer; the isolation belt is provided with at least one groove on each of two surfaces of the middle layer, the grooves on the surfaces of two sides of the sounding substrate are staggered and parallel, the depth direction of the grooves is perpendicular to the surface of the sounding substrate, and the extending direction of the grooves is the same as that of the isolation belt; the depth of the groove is larger than or equal to half of the thickness of the sounding substrate.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310249.8A CN111526452B (en) | 2020-04-20 | 2020-04-20 | Display device and sound-emitting screen |
| CN202190000191.5U CN218634236U (en) | 2020-04-20 | 2021-03-19 | Display device and sound-emitting screen |
| PCT/CN2021/081822 WO2021213095A1 (en) | 2020-04-20 | 2021-03-19 | Display device and sound on display |
| US17/940,511 US20230007374A1 (en) | 2020-04-20 | 2022-09-08 | Display apparatus |
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| CN202010310249.8A CN111526452B (en) | 2020-04-20 | 2020-04-20 | Display device and sound-emitting screen |
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| CN111526452A true CN111526452A (en) | 2020-08-11 |
| CN111526452B CN111526452B (en) | 2021-12-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112543398A (en) * | 2020-12-09 | 2021-03-23 | 青岛海信激光显示股份有限公司 | Sound production board and projection screen |
| WO2021213095A1 (en) * | 2020-04-20 | 2021-10-28 | 海信视像科技股份有限公司 | Display device and sound on display |
| CN114089589A (en) * | 2020-08-24 | 2022-02-25 | 青岛海信激光显示股份有限公司 | Projection screen and laser projection system |
| CN114627752A (en) * | 2020-12-11 | 2022-06-14 | 京东方科技集团股份有限公司 | Display panel and display device thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3599699B2 (en) * | 2001-10-16 | 2004-12-08 | 株式会社ジャムコ | Flat speaker |
| CN107533408A (en) * | 2015-04-21 | 2018-01-02 | 富士通株式会社 | Electronic equipment |
| CN108124224A (en) * | 2016-11-30 | 2018-06-05 | 乐金显示有限公司 | Panel vibration type sounding display device |
| CN208273238U (en) * | 2018-05-25 | 2018-12-21 | 四川长虹电器股份有限公司 | Sounding panel, hard screen and device |
| US20190045287A1 (en) * | 2017-08-03 | 2019-02-07 | Lg Display Co., Ltd. | Display Apparatus |
| CN210090908U (en) * | 2019-06-17 | 2020-02-18 | 青岛海信电器股份有限公司 | Display device |
-
2020
- 2020-04-20 CN CN202010310249.8A patent/CN111526452B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3599699B2 (en) * | 2001-10-16 | 2004-12-08 | 株式会社ジャムコ | Flat speaker |
| CN107533408A (en) * | 2015-04-21 | 2018-01-02 | 富士通株式会社 | Electronic equipment |
| CN108124224A (en) * | 2016-11-30 | 2018-06-05 | 乐金显示有限公司 | Panel vibration type sounding display device |
| US20190045287A1 (en) * | 2017-08-03 | 2019-02-07 | Lg Display Co., Ltd. | Display Apparatus |
| CN208273238U (en) * | 2018-05-25 | 2018-12-21 | 四川长虹电器股份有限公司 | Sounding panel, hard screen and device |
| CN210090908U (en) * | 2019-06-17 | 2020-02-18 | 青岛海信电器股份有限公司 | Display device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021213095A1 (en) * | 2020-04-20 | 2021-10-28 | 海信视像科技股份有限公司 | Display device and sound on display |
| CN114089589A (en) * | 2020-08-24 | 2022-02-25 | 青岛海信激光显示股份有限公司 | Projection screen and laser projection system |
| CN114089589B (en) * | 2020-08-24 | 2023-01-31 | 青岛海信激光显示股份有限公司 | Projection screen and laser projection system |
| CN112543398A (en) * | 2020-12-09 | 2021-03-23 | 青岛海信激光显示股份有限公司 | Sound production board and projection screen |
| CN114627752A (en) * | 2020-12-11 | 2022-06-14 | 京东方科技集团股份有限公司 | Display panel and display device thereof |
| CN114627752B (en) * | 2020-12-11 | 2024-01-26 | 京东方科技集团股份有限公司 | Display panel and display device thereof |
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|---|---|
| CN111526452B (en) | 2021-12-17 |
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