CN108337618B - Electronic assembly - Google Patents
Electronic assembly Download PDFInfo
- Publication number
- CN108337618B CN108337618B CN201810379655.2A CN201810379655A CN108337618B CN 108337618 B CN108337618 B CN 108337618B CN 201810379655 A CN201810379655 A CN 201810379655A CN 108337618 B CN108337618 B CN 108337618B
- Authority
- CN
- China
- Prior art keywords
- display screen
- piezoelectric transducer
- piezoelectric
- assembly
- electronic assembly
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 16
- 239000000919 ceramic Substances 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000000741 silica gel Substances 0.000 description 9
- 229910002027 silica gel Inorganic materials 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 230000004044 response Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
- H04R23/006—Transducers other than those covered by groups H04R9/00 - H04R21/00 using solid state devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
An electronic assembly is disclosed that includes a display screen assembly, a side frame, a rear housing, a plurality of piezoelectric transducers, and a flexible circuit board. The piezoelectric transducers are arranged in the grooves of the side frames and are electrically connected with the piezoelectric transducers through the flexible circuit board, and the piezoelectric transducers can mutually convert electric energy and mechanical energy so that the electronic components can realize different functions. The invention has simple structure, can replace the traditional loudspeaker or receiver arranged on the multimedia equipment, and improves the sensitivity and the sound quality of the loudspeaker. Meanwhile, the piezoelectric transducer can be arranged at the edge of the display screen, so that the piezoelectric transducer can be matched with the full screen, and the application range of the piezoelectric transducer is further increased.
Description
Technical Field
The invention relates to the field of multimedia electronic devices, in particular to an electronic component.
Background
With the continuous development of the mobile internet, intelligent mobile devices have become indispensable items in life. And the communication and other voice functions of the intelligent mobile device are one of the requirements, so that the loudspeaker in the intelligent mobile device is important. Patent CN102917299B proposes a screen sounder comprising a screen and a driver. The screen sounder is provided with a driver below the screen, and vibration of the driver can enable the screen to vibrate and make sound.
The driver of this patent is in the form of a strip and must be disposed on two parallel sides of the screen, spaced apart from the touch screen by a distance. The driver directly promotes the screen vibration through the silica gel pad at the in-process of work, and the touch screen is accurate components and parts, if silica gel pad and touch screen contact and during operation transmission mechanical vibration energy, will lead to touch screen damage. Meanwhile, due to the large size of the piezoelectric driver, the screen must reserve extra non-touch and non-display area for the driver. Therefore, the patent is not suitable for the technical requirements of the current full-screen mobile phones, tablet computers and other devices; meanwhile, the driver has large size and relatively complex structure, and the technology of the patent cannot be used for some devices with thickness requirements. Meanwhile, when the piezoelectric driver works, only two side edges of the screen are driven to vibrate locally, the other two side edges of the screen and the central area of the screen are required to be driven by the rigidity of the screen, and the structure can lead to uneven high frequency in a frequency response curve and affect sound quality. The piezoelectric driver in this patent is rectangular shape piezoelectric plate, and the circular telegram produces bending vibration, transmits to screen vibration sound production through the silica gel pad, and the vibration effect is weaker, and then influences the sensitivity of sounder.
Disclosure of Invention
In view of the above, the present invention provides an electronic component, in which a piezoelectric transducer can mutually convert electric energy and mechanical energy according to a positive and negative piezoelectric effect, so that the electronic component can realize various functions and increase the application range thereof.
An embodiment of the present invention provides an electronic component including:
A display screen assembly;
The side frame is provided with a plurality of grooves and is used for supporting the display screen assembly;
the rear shell is arranged below the side frame;
A plurality of piezoelectric transducers disposed within the recess and configured to mutually convert electrical energy and mechanical energy of the piezoelectric transducers according to a positive and negative piezoelectric effect;
And the flexible circuit board is electrically connected with the piezoelectric transducer.
Preferably, the groove is arranged at the center of the side edge of the side frame and/or near the vertex angle of the side frame.
Preferably, at least part of the piezoelectric transducer is configured to vibrate in a controlled manner to drive the display screen assembly in vibration; or alternatively, the first and second heat exchangers may be,
At least a portion of the piezoelectric transducer is configured to be controlled to vibrate to drive the display screen assembly and the rear housing to vibrate.
Preferably, the piezoelectric transducer vibrates in the audio frequency range to drive the display screen assembly to vibrate and sound; and/or the number of the groups of groups,
The piezoelectric transducer vibrates in a non-audio frequency range to provide a vibration cue.
Preferably, the at least part of piezoelectric transducers comprise piezoelectric transducers arranged at the centers of two opposite sides of the side frame;
The piezoelectric transducers in the centers of the two opposite sides are configured to vibrate in different phases than the other piezoelectric transducers to mitigate the eigenmode effects of the display screen assembly vibration.
Preferably, at least part of the piezoelectric transducer is configured to convert an external force applied to the display screen assembly into an electrical signal.
Preferably, the piezoelectric transducer is configured to convert vibrations in the audio range sensed by the display screen assembly into electrical signals; and/or the number of the groups of groups,
The piezoelectric transducer is configured to convert a pressing external force sensed by the display screen assembly into an electrical signal.
Preferably, a portion of the piezoelectric transducer is configured to convert vibrations in the audio range sensed by the display screen assembly into an electrical feedback signal;
another portion of the piezoelectric transducers are configured to vibrate in an audio frequency range to drive the display screen assembly to vibrate for sound production;
Wherein the vibration driving signal of the other part of piezoelectric transducer is obtained by adjusting according to the electric feedback signal.
Preferably, the display screen assembly includes:
A transparent front case provided with a groove for accommodating the display screen; and
The display screen is fixedly arranged in the transparent front shell;
Wherein the side frame is in contact with the transparent front shell.
Preferably, the piezoelectric transducer is fixedly connected with the transparent front shell and the rear shell through a sealing layer.
Preferably, a spacer is provided on the inner side of the piezoelectric transducer.
Preferably, a vibration isolation structure is arranged between the bottom of the side frame and the rear shell.
Preferably, the side frame includes:
The first frame is arranged on the outer side of the electronic component;
the second frame is arranged on the inner side of the electronic component and surrounds the first frame to form the groove.
Preferably, the first frame is connected with the rear shell to form a gap.
Preferably, the top of the first frame is fixedly connected with the second frame through a sealing layer.
Preferably, a baffle is convexly arranged on the outer side of the top of the second frame.
Preferably, the piezoelectric transducer is a cylinder or a cuboid.
Preferably, the cross-section diameter of the cylinder is 0.5mm-3mm and the height is 1mm-10mm.
Preferably, the cross section of the cuboid is square or rectangular, the side length is 0.5mm-3mm, and the height is 1mm-10mm.
Preferably, the piezoelectric transducer is a multilayer stack piezoelectric ceramic device.
Preferably, the ceramic layer number of the multilayer stack piezoelectric ceramic device is 10 or more.
Preferably, the display screen assembly, the side frame and the rear case are hermetically connected to each other to form a space having air tightness.
The invention discloses an electronic component, which comprises a display screen component, a side frame, a rear shell, a plurality of piezoelectric transducers and a flexible circuit board. The piezoelectric transducers are arranged in the grooves of the side frames and are electrically connected with the piezoelectric transducers through the flexible circuit board, and the piezoelectric transducers can mutually convert electric energy and mechanical energy so that the electronic components can realize different functions. The invention has simple structure, can replace the traditional loudspeaker or receiver arranged on the multimedia equipment, and improves the sensitivity and the sound quality of the loudspeaker. Meanwhile, the piezoelectric transducer can be arranged at the edge of the display screen, so that the piezoelectric transducer can be matched with the full screen, and the application range of the piezoelectric transducer is further increased.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:
FIG. 1 is an exploded view of an electronic assembly according to a first embodiment of the present invention;
fig. 2 is a front perspective view of an electronic assembly of a first embodiment of the invention;
FIG. 3 is a schematic partial cross-sectional view of an electronic assembly according to a first embodiment of the invention;
fig. 4 is a schematic partial cross-sectional view of an electronic assembly according to a second embodiment of the invention.
Detailed Description
The present invention is described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. The present invention will be fully understood by those skilled in the art without the details described herein. Well-known methods, procedures, flows, components and circuits have not been described in detail so as not to obscure the nature of the invention.
Moreover, those of ordinary skill in the art will appreciate that the drawings are provided herein for illustrative purposes and that the drawings are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, it is the meaning of "including but not limited to".
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly, as they may be fixed, removable, or integral, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Embodiment one:
Fig. 1-3 are schematic diagrams of an electronic component according to the present embodiment. As shown in fig. 1 to 3, the electronic component includes a display screen assembly 1, a side frame 2, a rear case 3, a piezoelectric transducer 4, and a flexible circuit board 5. The display screen assembly 1 comprises a transparent front housing 11 and a display screen 12. The length and width dimensions of the transparent front shell 11 are both larger than those of the display screen 12, the transparent front shell 11 is provided with a groove which is opened downwards, the display screen 12 is arranged in the opening groove of the transparent front shell 11 and is attached to the transparent front shell 11, so that the display screen 12 is overlapped with the top end of the opening groove, and the overall thickness of the electronic component can be reduced as shown in fig. 3. The transparent front shell 11 is made of transparent glass, and information displayed on the display screen 12 can be seen through the transparent glass. The side frame 2 is a rectangular supporting frame with four sides, and is used for supporting the transparent front shell 11 and the display screen 12. The side frame 2 is connected with the transparent front shell 11 in a contact way.
The side frame 2 is provided with a plurality of grooves 20, which grooves 20 may be provided in the side center of the side frame 2 and/or near the top corner of the side frame 2. The number of the piezoelectric transducers 4 is the same as that of the grooves 20, the piezoelectric transducers 4 are arranged in the corresponding grooves 20, and electrodes are arranged at the bottoms of the piezoelectric transducers 4 and are electrically connected with the flexible circuit board 5. Preferably, the piezoelectric transducer 4 may be soldered to the flexible circuit board 5.
The number and the positions of the grooves 20 and the piezoelectric transducers 4 can be set according to the needs, for example, only one piezoelectric transducer 4 is arranged near the original receiver of the device, and when the piezoelectric transducer 4 works, only the partial transparent front shell 11 is pushed to vibrate and sound, so that the function of the receiver is completed; or four piezoelectric transducers 4 are arranged, and one piezoelectric transducer 4 is arranged at the center of each of the four sides of the side frame 22.
In this embodiment, the width of the side edge of the side frame 2 is smaller than the width of the side edge of the opening slot of the transparent front shell 11, when the piezoelectric transducer 4 is installed in the groove 20, the piezoelectric transducer 4 is located in the side edge area of the opening slot of the transparent front shell 11, so that the piezoelectric transducer 4 can avoid direct contact with the display screen 12, and direct transmission of mechanical vibration energy to the display screen 12 when the piezoelectric transducer 4 is controlled to vibrate, resulting in damage to the display screen 12.
The rear case 3 is disposed below the side frame 2, and is connected with the side frame 2, the transparent front case 11 and the display screen 12 in a sealing manner to form a space with air tightness, so that the rear case can be used for accommodating components of other electronic components such as a battery, a circuit board, a camera and the like. The piezoelectric transducer 4 is arranged in the groove 20, the outer side of the piezoelectric transducer 4 is tightly attached to the side frame 2, and the lower side of the piezoelectric transducer 4 is communicated with the flexible circuit board 5. In the present embodiment, the flexible circuit board 5 is connected to the electrode of the piezoelectric transducer 4 by soldering, and is closely attached to the lower side of the piezoelectric transducer 4. In another implementation, the flexible circuit board 5 may also be disposed in other spaces of the electronic component, and may be mounted according to a structure. The upper part and the lower part of the side frame 2 and the piezoelectric transducer 4 are respectively in sealing connection with the transparent front shell 11 and the transparent rear shell 3 through the sealing layer 6, the sealing layer 6 can be bonded by adopting silica gel or other glue, the buffer protection effect can be achieved, and the piezoelectric transducer 4 can push the display screen assembly 1 and the rear shell 3 to vibrate and sound through the sealing layer 6. Since the sealing layer 6 needs to transmit mechanical vibration energy generated by the piezoelectric transducer 4, the material of the sealing layer 6 is suitable for selecting a harder material, such as a silica gel of a harder material. In the present embodiment, the piezoelectric transducer 4 indirectly transmits mechanical vibration energy of the piezoelectric transducer 4 to the display screen 12 through the sealing layer 6 and the transparent front case 11, whereby the service life of the display screen 12 can be improved while ensuring transmission of vibration energy.
In this embodiment, the space between the outer edge of the transparent front shell 11 and the side frame 2 may be encapsulated again by glue, and the glue is made of silica gel. The silica gel has elasticity, can play the effect of buffering protection, can prevent that the impact that electronic component falls and produces from directly transmitting to display screen 12 by side frame 2, causes display screen 12 breakage.
The inside of piezoelectric transducer 4 is provided with gasket 7, can seal piezoelectric transducer 4 in recess 20 avoids piezoelectric transducer 4 to rock in recess 20, can avoid piezoelectric transducer 4 to contact with other parts of electronic component simultaneously, extrudees and damages piezoelectric transducer 4. The gasket 7 can be made of soft silica gel, has elasticity and can play a role in buffering protection.
The piezoelectric transducer 4 may be provided as a cylinder or a cuboid. Preferably, if the piezoelectric block is a cylinder, its cross-sectional diameter ranges from 0.5mm to 3mm and its height ranges from 1mm to 10mm; if the piezoelectric block is cuboid, the cross section of the piezoelectric block can be square or rectangular, the side length range is 0.5mm to 3mm, and the height is 1mm to 10mm. The piezoelectric transducers 4 are small in size and are suitable for being mounted in the side frames 2, so that the non-display area of electronic components can be reduced. In this embodiment, the piezoelectric transducer 4 may be a multilayer stack piezoelectric ceramic device, which may be used for micro-positioning, valve control, shock absorption, and acoustic wave generation. The piezoelectric ceramic device can be used as an electromechanical transducer to convert an electric signal into mechanical displacement and be applied to a regulating and controlling system, and the piezoelectric ceramic with the multilayer stacked structure has the advantages of small volume, extremely high displacement resolution, high response speed, low-voltage driving, large output force and the like. Preferably, the number of layers of the multilayer stack piezoelectric ceramic device is 10 or more.
In this embodiment, the piezoelectric transducer 4 may convert electric energy and mechanical energy of the piezoelectric transducer into each other according to the positive and negative piezoelectric effect so that the electronic component may realize a corresponding function. Preferably, when the electronic component works, a driving signal can be transmitted to the piezoelectric transducer 4 through the flexible circuit board 5 by the control circuit, the piezoelectric transducer 4 converts electric energy into mechanical energy according to the driving signal, and the piezoelectric transducer 4 stretches and stretches along the direction perpendicular to the display screen 12 to vibrate so as to drive the display screen component 1 and the rear shell 3 to vibrate through the sealing layer 6. The phases of the display screen assembly 1 and the rear shell 3 are the same when vibrating, namely the display screen assembly 1 and the rear shell 3 vibrate towards the outer side of the electronic assembly or vibrate towards the inner side of the electronic assembly at the same time. Wherein the piezoelectric transducer 4 can convert the electrical signal into mechanical vibrations in the audio frequency range or into mechanical vibrations in the non-audio frequency range depending on the different driving signals. The piezoelectric transducer 4 can drive the display screen assembly 1 and the rear case 3 to vibrate and sound when vibrating in the audio frequency range. A vibration cue may be provided when the piezoelectric transducer 4 vibrates in a non-audio range.
In the present embodiment, the side frame 2 is provided with eight grooves 20 provided in the centers of the four sides of the side frame 2 and in the vicinity of the four apex angles, respectively. Correspondingly, the eight grooves 20 are respectively provided with piezoelectric transducers 4. In a specific control scheme, the eight piezoelectric transducers 4 may be controlled identically or differently by driving signals, so as to achieve multiple functions. The piezoelectric transducers 4 can be uniformly controlled and converted into mechanical vibration in an audio frequency range through driving signals so as to drive the display screen assembly 1 and the rear shell 3 to perform local vibration sounding, and the piezoelectric transducers can be used as receivers in communication equipment communication, and/or the piezoelectric transducers 4 can be uniformly controlled and converted into mechanical vibration in a non-audio frequency range through driving signals so as to drive the display screen assembly 1 and the rear shell 3 to perform local vibration, and the piezoelectric transducers can be used as communication equipment vibration prompt functions. Meanwhile, all piezoelectric transducers 4 can be uniformly controlled and converted into mechanical vibration in an audio frequency range through driving signals, so that the display screen assembly 1 and the rear shell 3 are driven to vibrate and sound in all areas, and the piezoelectric transducers can serve as bell sound functions of communication equipment. The control circuit in the electronic component can also be set to drive the piezoelectric transducers 4 (long side or short side) in the centers of two opposite sides in the side frame 2 by the same driving signal, and the vibration phases of the piezoelectric transducers 4 are different from those of other piezoelectric transducers when the piezoelectric transducers vibrate, so that the intrinsic mode effect of high-frequency vibration of the display screen can be lightened, and the high-frequency sound quality is improved.
On the other hand, the piezoelectric transducer 4 may also convert an external force applied to the display screen 12 into an electric signal according to the positive piezoelectric effect. The positive piezoelectric effect is that the piezoelectric transducer 4 generates corresponding shape changes such as compression or extension when being subjected to external force, and the surface of the piezoelectric transducer 4 is electrified to generate an electric signal. In this embodiment, when the display screen 12 receives an external force, the pressure is transmitted to the piezoelectric transducer 4 through the sealing layer 6, the piezoelectric transducer 4 performs corresponding stretching vibration, and the stretching vibration is converted into an electrical signal through the control circuit. Wherein the electronic assembly may configure a portion of the piezoelectric transducer 4 to convert vibrations in the audio range sensed by the display screen 12 into electrical signals; and/or, the piezoelectric transducer 4 is configured to convert the pressing external force sensed by the display screen into an electric signal, so as to realize a corresponding control function. For example, by pressing an activation display, the function of the pressure key is achieved.
In the present embodiment, a part of the piezoelectric transducer 4 is configured to convert the vibration in the audio frequency range sensed by the display screen 12 into an electrical feedback signal, that is, the piezoelectric transducer 4 is used as a feedback unit to transmit the electrical feedback signal of the vibration state and intensity of the display screen 12 back to the electronic component; the electronic assembly adjusts the vibration drive signal, including the amplitude and frequency characteristics of the vibration drive signal, based on the electrical feedback signal, and then sends the adjusted vibration drive signal to another portion of the piezoelectric transducer 4. The other part of piezoelectric transducer 4 is configured to convert the driving signal into telescopic vibration in the audio frequency range when receiving the driving signal, so as to drive the display screen 12 to vibrate and sound. And further, closed-loop control can be realized to automatically adjust the frequency response curve of the electronic component.
According to the embodiment, the piezoelectric transducers are arranged in the grooves of the side frames and electrically connected with the piezoelectric transducers through the flexible circuit board, and the piezoelectric transducers can mutually convert electric energy and mechanical energy so that the electronic assembly can realize different functions. The embodiment has simple structure, can replace the traditional loudspeaker or receiver arranged on the multimedia equipment, and improves the sensitivity and the sound quality of the loudspeaker. Meanwhile, the piezoelectric transducer can be arranged at the edge of the display screen, so that the piezoelectric transducer can be matched with the full screen, and the application range of the piezoelectric transducer is further increased.
Embodiment two:
Fig. 4 is a schematic partial cross-sectional view of an electronic component according to the present embodiment. As shown in fig. 4, the electronic component includes a transparent front case 11, a display screen 12, a side frame 2, a rear case 3, a piezoelectric transducer 4, and a flexible circuit board 5. The structure of the electronic component in this embodiment is basically the same as that of the first embodiment, and only the difference is that the bottom of the side frame 2 is provided with a vibration isolation structure, and when the piezoelectric transducer 4 is controlled to vibrate in a telescopic manner, the sealing layer 6 drives the display screen component 1 to vibrate, but cannot drive the rear housing 3 to vibrate together.
In the present embodiment, the side frame 2 includes a first frame 21 and a second frame 22. The first frame 21 is disposed on the outer side of the electronic component, and plays a role in supporting and protecting. The second frame 22 is disposed on the inner side of the electronic component, and surrounds the first frame 21 to form a recess 20 for accommodating the piezoelectric transducer 4. The recess 20 may be provided at the side center of the side frame 2 and/or near the top corner of the side frame 2. The number of the piezoelectric transducers 4 is the same as that of the grooves 20, the piezoelectric transducers 4 are arranged in the corresponding grooves 20, and electrodes are arranged at the bottoms of the piezoelectric transducers 4 and are electrically connected with the flexible circuit board 5. The number and positions of the grooves 20 and the piezoelectric transducers 4 can be freely varied.
The first frame 21 is provided as a folded corner structure 23 having steps. The step structure is arranged at the bottom of the first frame 21, the second part of the step is longer than the first part, and the second part of the step is positioned on the first part, so that when the first frame 21 is connected with the rear shell 3, the first part of the step is fixedly connected with the rear shell 3, a gap is formed between the second part of the step and the rear shell 3, and the flexible circuit board 5 and the piezoelectric transducer 4 are not in direct contact with the rear shell 3. Preferably, the piezoelectric transducer 4 and the flexible circuit board 5 are disposed in the recess 20, and the bottom of the piezoelectric transducer 4 is electrically connected with the flexible circuit board 5. When the electronic component works, the control circuit transmits a driving signal to the piezoelectric transducer 4 through the flexible circuit board 5, and the piezoelectric transducer 4 stretches and vibrates along the direction perpendicular to the display screen 12. Since the first frame 21 and the rear shell 3 are provided with gaps, the piezoelectric transducer 4 only pushes the display screen assembly 1 to vibrate through the second frame 22 when vibrating, and does not push the rear shell 3 to generate vibration and sound. Openings towards the inside of the electronic component are formed at the bottom of the second frame 22 and the bottom of the first frame 21, so as to provide a vibration space for the first frame 21, and ensure the air tightness of the electronic component.
The piezoelectric transducer 4 may be fixed on the flexible circuit board 5 by welding, and the flexible circuit board 5 is mounted in a manner of being attached to the first frame 21. The top of the first frame 21 is connected with the top of the second frame 22 in a sealing way through a sealing layer 6. The first frame 21 is made of metal or plastic material, so that the aesthetic property of the electronic component is improved under the condition that the whole weight of the electronic component is light. The second frame 22 is made of plastic material. The baffle 24 is convexly arranged on the outer side of the top of the second frame 22, the transparent front shell 11 is connected with the second frame 22 after being assembled with the display screen 12, the outer side of the transparent front shell 11 is attached to the baffle 24 on the top of the second frame 22, and therefore the installation difficulty is reduced, and the display screen assembly 1 can be installed on the side frame 2 more simply and accurately. Meanwhile, the sealing layer 6 can be adopted for packaging at the joint of the outer side of the transparent front shell 11 and the baffle 24 at the top of the second frame 22. The sealing layer 6 can adopt silica gel with elasticity and softer materials, can play a role of buffering, and can prevent the impact generated by falling of equipment from being transmitted to the display screen 12 by the side frame 2, so that the display screen 12 is broken.
In this embodiment, the piezoelectric transducer 4 may convert electric energy and mechanical energy of the piezoelectric transducer into each other according to the positive and negative piezoelectric effect so that the electronic component may realize a corresponding function. Preferably, when the electronic component works, a driving signal can be transmitted to the piezoelectric transducer 4 through the flexible circuit board 5 by the control circuit, the piezoelectric transducer 4 converts electric energy into mechanical energy according to the driving signal, and the piezoelectric transducer 4 stretches and stretches along the direction perpendicular to the display screen 12 to vibrate so as to drive the display screen component 1 to vibrate through the sealing layer 6. Wherein the piezoelectric transducer 4 can convert the electrical signal into mechanical vibrations in the audio frequency range or into mechanical vibrations in the non-audio frequency range depending on the different driving signals. The piezoelectric transducer 4 may drive the display screen assembly 1 to vibrate and sound when vibrating in the audio frequency range. A vibration cue may be provided when the piezoelectric transducer 4 vibrates in a non-audio range.
In the present embodiment, the side frame 2 is provided with eight grooves 20 provided in the centers of the four sides of the side frame 2 and in the vicinity of the four apex angles, respectively. Correspondingly, the eight grooves 20 are respectively provided with piezoelectric transducers 4. In a specific control scheme, the eight piezoelectric transducers 4 may be controlled identically or differently by driving signals, so as to achieve multiple functions. The piezoelectric transducers 4 can be uniformly controlled and converted into mechanical vibration in an audio frequency range through driving signals so as to drive the display screen assembly 1 to perform local vibration sounding, and the piezoelectric transducers can be used as receivers in communication equipment communication, and/or the piezoelectric transducers 4 can be uniformly controlled and converted into mechanical vibration in a non-audio frequency range through driving signals so as to drive the display screen assembly 1 to perform local vibration, and the piezoelectric transducers can be used as communication equipment vibration prompt functions. Meanwhile, all piezoelectric transducers 4 can be uniformly controlled and converted into mechanical vibration in an audio frequency range through driving signals, so that the display screen assembly 1 is driven to vibrate and sound in all areas, and the piezoelectric transducers can be used as the bell sound function of communication equipment. The control circuit in the electronic component can also be set to drive the piezoelectric transducers 4 (long side or short side) in the centers of two opposite sides in the side frame 2 by the same driving signal, and the vibration phases of the piezoelectric transducers 4 are different from those of other piezoelectric transducers when the piezoelectric transducers vibrate, so that the intrinsic mode effect of high-frequency vibration of the display screen can be lightened, and the high-frequency sound quality is improved.
On the other hand, the piezoelectric transducer 4 may also convert an external force applied to the display screen 12 into an electric signal according to the positive piezoelectric effect. The positive piezoelectric effect is that the piezoelectric transducer 4 generates corresponding shape changes such as compression or extension when being subjected to external force, and the surface of the piezoelectric transducer 4 is electrified to generate an electric signal. In this embodiment, when the display screen 12 receives an external force, the pressure is transmitted to the piezoelectric transducer 4 through the sealing layer 6, the piezoelectric transducer 4 performs corresponding stretching vibration, and the stretching vibration is converted into an electrical signal through the control circuit. Wherein the electronic assembly may configure a portion of the piezoelectric transducer 4 to convert vibrations in the audio range sensed by the display screen 12 into electrical signals; and/or, the piezoelectric transducer 4 is configured to convert the pressing external force sensed by the display screen into an electric signal, so as to realize a corresponding control function. For example, by pressing an activation display, the function of the pressure key is achieved.
In the present embodiment, a part of the piezoelectric transducer 4 is configured to convert the vibration in the audio frequency range sensed by the display screen 12 into an electrical feedback signal, that is, the piezoelectric transducer 4 is used as a feedback unit to transmit the electrical feedback signal of the vibration state and intensity of the display screen 12 back to the electronic component; the electronic assembly adjusts the vibration drive signal, including the amplitude and frequency characteristics of the vibration drive signal, based on the electrical feedback signal, and then sends the adjusted vibration drive signal to another portion of the piezoelectric transducer 4. The other part of piezoelectric transducer 4 is configured to convert the driving signal into telescopic vibration in the audio frequency range when receiving the driving signal, so as to drive the display screen 12 to vibrate and sound. And further, closed-loop control can be realized to automatically adjust the frequency response curve of the electronic component.
According to the embodiment, the piezoelectric transducers are arranged in the grooves of the side frames and electrically connected with the piezoelectric transducers through the flexible circuit board, and the piezoelectric transducers can mutually convert electric energy and mechanical energy so that the electronic assembly can realize different functions. The embodiment has simple structure, can replace the traditional loudspeaker or receiver arranged on the multimedia equipment, and improves the sensitivity and the sound quality of the loudspeaker. Meanwhile, the piezoelectric transducer can be arranged at the edge of the display screen, so that the piezoelectric transducer can be matched with the full screen, and the application range of the piezoelectric transducer is further increased.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (21)
1. An electronic assembly, the electronic assembly comprising:
A display screen assembly;
the side frame is provided with a plurality of grooves and is used for supporting the display screen assembly;
The rear shell is arranged below the side frame, and a vibration isolation structure is arranged between the bottom of the side frame and the rear shell;
A plurality of piezoelectric transducers disposed within the recess and configured to mutually convert electrical energy and mechanical energy of the piezoelectric transducers according to a positive and negative piezoelectric effect;
And the flexible circuit board is electrically connected with the piezoelectric transducer.
2. The electronic assembly of claim 1, wherein the recess is provided in a side center of the side frame and/or near a top corner of the side frame.
3. The electronic assembly of claim 1, wherein at least a portion of the piezoelectric transducer is configured to be controlled to vibrate to drive the display screen assembly to vibrate; or alternatively, the first and second heat exchangers may be,
At least a portion of the piezoelectric transducer is configured to be controlled to vibrate to drive the display screen assembly and the rear housing to vibrate.
4. The electronic assembly of claim 3, wherein the piezoelectric transducer vibrates in an audio frequency range to drive the display screen assembly to vibrate for sound production; and/or the number of the groups of groups,
The piezoelectric transducer vibrates in a non-audio frequency range to provide a vibration cue.
5. The electronic assembly of claim 3, wherein the at least some piezoelectric transducers comprise piezoelectric transducers disposed at centers of two opposite sides of the side frame;
The piezoelectric transducers in the centers of the two opposite sides are configured to vibrate in different phases than the other piezoelectric transducers to mitigate the eigenmode effects of the display screen assembly vibration.
6. The electronic assembly of claim 1, wherein at least a portion of the piezoelectric transducer is configured to convert an external force applied to the display screen assembly into an electrical signal.
7. The electronic assembly of claim 6, wherein the piezoelectric transducer is configured to convert vibrations in an audio range sensed by the display screen assembly into an electrical signal; and/or the number of the groups of groups,
The piezoelectric transducer is configured to convert a pressing external force sensed by the display screen assembly into an electrical signal.
8. The electronic assembly of claim 1, wherein a portion of the piezoelectric transducer is configured to convert vibrations in the audio range sensed by the display screen assembly into an electrical feedback signal;
another portion of the piezoelectric transducers are configured to vibrate in an audio frequency range to drive the display screen assembly to vibrate for sound production;
Wherein the vibration driving signal of the other part of piezoelectric transducer is obtained by adjusting according to the electric feedback signal.
9. The electronic assembly of claim 1, wherein the display screen assembly comprises:
A transparent front case provided with a groove for accommodating the display screen; and
The display screen is fixedly arranged in the transparent front shell;
Wherein the side frame is in contact with the transparent front shell.
10. The electronic assembly of claim 9, wherein the piezoelectric transducer is fixedly connected to the transparent front and rear shells by a sealing layer.
11. The electronic assembly of claim 1, wherein the piezoelectric transducer is provided with pads on the inside.
12. The electronic assembly of claim 1, wherein the side frame comprises:
The first frame is arranged on the outer side of the electronic component;
the second frame is arranged on the inner side of the electronic component and surrounds the first frame to form the groove.
13. The electronic assembly of claim 12, wherein the first bezel is coupled to the back case to form a gap.
14. The electronic assembly of claim 12, wherein the top of the first frame is fixedly connected to the second frame by a sealing layer.
15. The electronic assembly of claim 12, wherein a baffle is protruding from a top outside of the second bezel.
16. The electronic assembly of claim 1, wherein the piezoelectric transducer is a cylinder or a cuboid.
17. The electronic assembly of claim 16, wherein the cylinder has a cross-sectional diameter of 0.5mm to 3mm and a height of 1mm to 10mm.
18. The electronic component of claim 16, wherein the rectangular parallelepiped has a square or rectangular cross section, a side length of 0.5mm to 3mm, and a height of 1mm to 10mm.
19. The electronic assembly of claim 1, wherein the piezoelectric transducer is a multilayer stack piezoelectric ceramic device.
20. The electronic assembly of claim 19, wherein the multilayer stack piezoelectric ceramic device has a ceramic layer number of 10 or greater.
21. The electronic assembly of claim 19, wherein the display screen assembly, the side frame and the rear housing are hermetically connected to each other to form a space having air tightness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810379655.2A CN108337618B (en) | 2018-04-25 | 2018-04-25 | Electronic assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810379655.2A CN108337618B (en) | 2018-04-25 | 2018-04-25 | Electronic assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108337618A CN108337618A (en) | 2018-07-27 |
| CN108337618B true CN108337618B (en) | 2024-05-07 |
Family
ID=62934478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810379655.2A Active CN108337618B (en) | 2018-04-25 | 2018-04-25 | Electronic assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108337618B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102683225B1 (en) | 2018-12-05 | 2024-07-08 | 엘지디스플레이 주식회사 | Display apparatus |
| CN109448572B (en) * | 2018-12-24 | 2024-09-20 | 深圳蓝普科技有限公司 | LED display screen |
| CN111726434A (en) * | 2019-03-22 | 2020-09-29 | 北京小米移动软件有限公司 | Terminal and terminal control method |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11252692A (en) * | 1998-03-02 | 1999-09-17 | Hokuriku Electric Ind Co Ltd | Piezoelectric sounding device |
| CN1271243A (en) * | 1999-04-16 | 2000-10-25 | Lg电子株式会社 | Loudspeaker device of displayer |
| CN1774871A (en) * | 2003-04-15 | 2006-05-17 | 专利创投公司 | Directional speakers |
| JP2007300426A (en) * | 2006-04-28 | 2007-11-15 | Sony Corp | Piezoelectric vibrator and piezoelectric vibration generator equipped therewith |
| JP2007329533A (en) * | 2006-06-06 | 2007-12-20 | Matsushita Electric Ind Co Ltd | Piezoelectric sounder |
| JP2008211863A (en) * | 2007-02-23 | 2008-09-11 | Seiko Epson Corp | Piezoelectric vibrator, electronic device, and conductive mounting method of piezoelectric vibrator |
| CN103096220A (en) * | 2013-01-04 | 2013-05-08 | 瑞声科技（南京）有限公司 | Flat plate sound production device |
| CN203086645U (en) * | 2013-01-04 | 2013-07-24 | 瑞声科技（南京）有限公司 | Screen sounder |
| CN203352639U (en) * | 2013-06-04 | 2013-12-18 | 瑞声科技（南京）有限公司 | Screen sounding device and mobile terminal using same device |
| CN104219609A (en) * | 2014-09-15 | 2014-12-17 | 精拓丽音科技（北京）有限公司 | Piezoelectric sound production structure and mobile terminal |
| CN204721604U (en) * | 2015-06-24 | 2015-10-21 | 维沃移动通信有限公司 | A kind of electronic equipment |
| CN106126181A (en) * | 2016-06-28 | 2016-11-16 | 宇龙计算机通信科技(深圳)有限公司 | A kind of screen sounding controller, method and terminal |
| CN205847543U (en) * | 2016-06-23 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Vibration-sound generating device |
| CN107371109A (en) * | 2017-08-29 | 2017-11-21 | 深圳创维－Rgb电子有限公司 | A kind of Self-sounding module and electronic equipment |
| CN107918508A (en) * | 2014-02-28 | 2018-04-17 | 南京优触电子科技有限公司 | A kind of interactive interface device realized by selective excitation and the asymmetric sound wave of reception tablet |
| CN208509264U (en) * | 2018-04-25 | 2019-02-15 | 精拓丽音科技（北京）有限公司 | Electronic building brick |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6965678B2 (en) * | 2000-01-27 | 2005-11-15 | New Transducers Limited | Electronic article comprising loudspeaker and touch pad |
| CN203206318U (en) * | 2013-04-05 | 2013-09-18 | 瑞声科技（南京）有限公司 | Screen apparatus |
-
2018
- 2018-04-25 CN CN201810379655.2A patent/CN108337618B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11252692A (en) * | 1998-03-02 | 1999-09-17 | Hokuriku Electric Ind Co Ltd | Piezoelectric sounding device |
| CN1271243A (en) * | 1999-04-16 | 2000-10-25 | Lg电子株式会社 | Loudspeaker device of displayer |
| CN1774871A (en) * | 2003-04-15 | 2006-05-17 | 专利创投公司 | Directional speakers |
| JP2007300426A (en) * | 2006-04-28 | 2007-11-15 | Sony Corp | Piezoelectric vibrator and piezoelectric vibration generator equipped therewith |
| JP2007329533A (en) * | 2006-06-06 | 2007-12-20 | Matsushita Electric Ind Co Ltd | Piezoelectric sounder |
| JP2008211863A (en) * | 2007-02-23 | 2008-09-11 | Seiko Epson Corp | Piezoelectric vibrator, electronic device, and conductive mounting method of piezoelectric vibrator |
| CN103096220A (en) * | 2013-01-04 | 2013-05-08 | 瑞声科技（南京）有限公司 | Flat plate sound production device |
| CN203086645U (en) * | 2013-01-04 | 2013-07-24 | 瑞声科技（南京）有限公司 | Screen sounder |
| CN203352639U (en) * | 2013-06-04 | 2013-12-18 | 瑞声科技（南京）有限公司 | Screen sounding device and mobile terminal using same device |
| CN107918508A (en) * | 2014-02-28 | 2018-04-17 | 南京优触电子科技有限公司 | A kind of interactive interface device realized by selective excitation and the asymmetric sound wave of reception tablet |
| CN104219609A (en) * | 2014-09-15 | 2014-12-17 | 精拓丽音科技（北京）有限公司 | Piezoelectric sound production structure and mobile terminal |
| CN204721604U (en) * | 2015-06-24 | 2015-10-21 | 维沃移动通信有限公司 | A kind of electronic equipment |
| CN205847543U (en) * | 2016-06-23 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Vibration-sound generating device |
| CN106126181A (en) * | 2016-06-28 | 2016-11-16 | 宇龙计算机通信科技(深圳)有限公司 | A kind of screen sounding controller, method and terminal |
| CN107371109A (en) * | 2017-08-29 | 2017-11-21 | 深圳创维－Rgb电子有限公司 | A kind of Self-sounding module and electronic equipment |
| CN208509264U (en) * | 2018-04-25 | 2019-02-15 | 精拓丽音科技（北京）有限公司 | Electronic building brick |
Non-Patent Citations (6)
| Title |
|---|
| Improvement on frequency response characteristics of the ultra-thin piezoelectric acoustic actuators;H. J. Kim, W. S. Yang and K. S. No;《Proceedings of ISAF-ECAPD-PFM 2012》;20120910;全文 * |
| WEP-7604遥测心电监护故障检修一例;李安芳, 袁其柱, 王欣;《 医疗卫生装备》;20040108;第22卷(第4期);全文 * |
| 姜忠喆.《物质新探：新材料用途知多少》.成都时代出版社,2014,(第1版),45. * |
| 弯曲振动型薄板扬声器;沈崤;《电声技术》;20010617;全文 * |
| 徐志君.《设计性研究性物理实验》.上海科学普及出版社,2012,(第1版),60-61. * |
| 赵近芳.《大学物理（下）》.北京邮电大学出版社,2006,(第2版),第45页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108337618A (en) | 2018-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115499766B (en) | Sound generating devices and electronic equipment | |
| JP3907616B2 (en) | Electronics | |
| WO2013164906A1 (en) | Electronic device | |
| WO2013145758A1 (en) | Electronic device | |
| CN108337618B (en) | Electronic assembly | |
| CN109032257B (en) | Electronic display device and electronic device | |
| WO2012111352A1 (en) | Electronic device | |
| KR101325678B1 (en) | Display panel including ultra thin piezoelectric speaker | |
| JP6022211B2 (en) | Electronics | |
| EP1955573B1 (en) | Speakerbox | |
| CN109348386B (en) | Driving device and electronic component | |
| CN208509264U (en) | Electronic building brick | |
| CN111405439B (en) | speaker | |
| WO2012137440A1 (en) | Electronic device | |
| CN211909160U (en) | Speaker and electronic equipment | |
| KR102214664B1 (en) | Sound producing actuator | |
| CN208940210U (en) | Key sounding device and electronic equipment | |
| JP2006304021A (en) | Piezoelectric electroacoustic transducer | |
| JP2003058166A (en) | Piezoelectric type electroacoustic transducer | |
| EP4099715B1 (en) | Actuator for distributed mode loudspeaker with extended damper, mobile device and system including the same | |
| KR102167410B1 (en) | Hybrid actuator and multimedia apparatus having the same | |
| JP6006530B2 (en) | Electronics | |
| JP4688687B2 (en) | Piezoelectric vibration unit and panel speaker | |
| CN118660261B (en) | Speaker, speaker module and electronic equipment | |
| CN110267181A (en) | Cover board and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |