CN107371109B

CN107371109B - Self-sounding module and electronic equipment

Info

Publication number: CN107371109B
Application number: CN201710757619.0A
Authority: CN
Inventors: 林渊
Original assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Current assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Priority date: 2017-08-29
Filing date: 2017-08-29
Publication date: 2020-12-01
Anticipated expiration: 2037-08-29
Also published as: CN107371109A

Abstract

The invention discloses a self-sounding module and electronic equipment, which comprise a display unit, wherein the display unit is provided with at least one sounding device and is used for driving the display unit to vibrate so as to enable the display unit to sound; the sound production device comprises a rigid connecting piece and a vibrator, wherein the rigid connecting piece is connected with the display unit and the vibrator so as to transmit the vibration of the vibrator to the display unit. According to the invention, the vibrator is connected with the OLED display unit through the rigid connecting piece, so that the energy loss in the vibration transmission process is reduced, and the loudness and tone quality of the sound emitted from the self-sounding module are improved.

Description

Self-sounding module and electronic equipment

Technical Field

The invention relates to the technical field of screen sounding, in particular to a self-sounding module and electronic equipment.

Background

With the development of the consumer electronics market, screen sounders have been increasingly noticed by people. Manufacturers also apply the method to various electronic products according to the requirements of customers, such as: mobile phones, notebook computers, tablet computers, smart televisions, and the like. The sound production principle of the screen sound generator is as follows: the vibration of an electromechanical transducer installed on the electronic equipment is transmitted to a screen of the electronic equipment, and then the sound production effect is realized through the vibration of the screen.

The screen sound generator in the related art generally includes a screen and a piezoelectric vibrator, and the piezoelectric vibrator is adhered to a back plate module of the screen by a glue material. However, in the process of transmitting vibration to the back plate module of the screen by the piezoelectric vibrator, energy loss can be caused by the gluing material for connecting the screen back plate module and the piezoelectric vibrator, and the amplitude of vibration can be limited by directly attaching the vibrator to the screen completely, so that the loudness and the tone quality of sound emitted by the screen are influenced.

Thus, the prior art has yet to be improved and enhanced.

Disclosure of Invention

The invention provides a self-sounding module and an electronic device, aiming at overcoming the defects of the prior art and solving the problem that the loudness and tone quality of sound emitted by a screen are affected due to energy loss of the conventional screen sounder.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a self-sounding module comprises a display unit, wherein at least one sounding device is arranged on the display unit and used for driving the display unit to vibrate so as to enable the display unit to sound; the sound production device comprises a rigid connecting piece and a vibrator, wherein the rigid connecting piece is connected with the display unit and the vibrator so as to transmit the vibration of the vibrator to the display unit.

The self-sounding module is characterized in that the display unit is an OLED display screen.

The self-sounding module is characterized in that the sounding device is one, and the vibration direction of the sounding device is perpendicular to the display unit.

The self-sounding module is provided with a plurality of sounding devices; the vibration directions of the plurality of sound generating devices are consistent and are all perpendicular to the display unit.

The self-sounding module is characterized in that the vibrator is a thin-sheet piezoelectric vibrator.

The shape of the rigid connecting piece is matched with that of the vibrator, so that the vibrator is completely attached to the rigid connecting piece.

The self-sounding module is characterized in that the rigid connecting piece is made of plastic.

The self-sounding module is characterized by further comprising an image driving unit and a module back plate, wherein the image driving unit and the module back plate are sequentially located on one side, not connected with the rigid connecting piece, of the vibrator.

An electronic device comprising a self-sounding module as described in any of the above.

The electronic equipment is an intelligent television.

Has the advantages that: compared with the prior art, the self-sounding module provided by the invention comprises a display unit, wherein at least one sounding device is arranged on the display unit and used for driving the display unit to vibrate so as to enable the display unit to sound; the sound production device comprises a rigid connecting piece and a vibrator, wherein the rigid connecting piece is connected with the display unit and the vibrator so as to transmit the vibration of the vibrator to the display unit. According to the invention, the vibrator is connected with the OLED display unit through the rigid connecting piece, so that the energy loss in the vibration transmission process is reduced, and the loudness and tone quality of the sound emitted from the self-sounding module are improved.

Drawings

Fig. 1 is an exploded view of the self-sounding module according to the present invention.

Fig. 2 is a cross-sectional view of the self-sounding module provided in the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic diagram of fig. 3 with an additional follower ring.

Detailed Description

The present invention provides a self-sounding module and an electronic device, and in order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention will be further explained by the description of the embodiments with reference to the drawings.

The present embodiment provides a self-sounding module, as shown in fig. 1, 2 and 3, comprising: it includes display element 1 and sound generating mechanism, sound generating mechanism set up in on the display element 1 to drive display element 1 vibration so that the display element sound production. The sound production device comprises a rigid connecting piece 2 and a vibrator 3, one side of the rigid connecting piece 2 is connected with the display unit 1, the other side of the rigid connecting piece is connected with the vibrator 3, namely, the rigid connecting piece 2 is connected with the display unit 1 and the vibrator 3, and the vibration of the vibrator 2 is transmitted to the display unit 1 to drive the display unit 1 to vibrate so as to enable the display unit 1 to produce sound. In the embodiment, the vibrator and the display unit are connected by the rigid connecting piece, so that the energy loss of the vibration in the process of transmitting the vibration to the display unit by the vibrator can be reduced, and the tone quality and loudness of the sound emitted by the display unit can be ensured.

Further, the vibrator 1 is preferably a piezoelectric vibrator, and the shape and number of the piezoelectric vibrators may be differently set according to an electronic device to which the self-sounding module is applied. For example, the piezoelectric vibrators are circular, square, polygonal, and the like, and the number of the piezoelectric vibrators is 1, 2, 3, and the like.

In the present embodiment, as shown in fig. 1, the number of the vibrators 1 is 1, and the shape thereof is a circle. The vibrator 3 is disposed at a central position of the display unit and has a vibration direction perpendicular to the display unit so that sound is emitted from the central position of the display unit. Of course, the vibrator may be disposed at other positions of the display unit, such as a bottom edge, a top edge, or a side edge of the display unit.

In a modified embodiment of this embodiment, the number of the vibrators is 2, and the shape thereof is a square. The two vibrators are symmetrically arranged on the display unit, and the connecting line of the centers of the two vibrators is the symmetry axis, so that the two vibrators vibrate the symmetrical position of the display unit, a user can listen to a real stereo effect, and convenience is brought to the user. In practical application, the symmetry axis is a symmetry axis in a horizontal direction.

In another modified embodiment of this embodiment, the number of the vibrators is multiple, the shape of the vibrators is circular, the multiple vibrators are arranged on the display unit in an array manner, and the display unit can make a better sound effect by controlling the individual vibrators. In practical application, the working frequency, vibration amplitude, phase and the like of each vibration unit can be controlled respectively, so that the whole system can send out sound effects matched with program contents. For example, a control switch is provided on an audio input line of each vibrator, and the audio input and the time of the audio input of the vibrator are controlled by the control switch to control the on/off and on time and the like of each vibrator, so that the sound production state of the display unit can be controlled by controlling the on/off of the control switch, and the display unit can produce sound effects matched with the program content.

Further, in the present embodiment and the modified embodiment of the present invention, the vibrator 3 employs a thin plate type vibrator including a central portion and edge portions, the edge portions being disposed along a circumferential direction of the central portion, and the edge portions having a thickness smaller than that of the central portion. The surface of the vibrator provided with the rigid connecting piece is a plane, and the other surface of the vibrator is a step surface, so that the vibration loss of the edge of the vibrator can be reduced. In practical application, as shown in fig. 4, in order to further reduce the vibration damage of the vibrator, the vibrator is provided with a follower ring 6 along the circumferential direction, the follower ring 6 extends in a direction away from the vibrator, that is, the follower ring 6 is sleeved outside the edge portion to increase the vibration inertia of the vibrator, so that the output efficiency of the display module is increased, and meanwhile, the follower ring reinforces the rigidity of the vibration unit, reduces the distortion of the output of the vibration unit, and improves the sound effect.

In one embodiment of the present invention, the rigid connection member 2 vibrates in accordance with the shape of the vibrator 3 and completely conforms to the thin-plate type vibrator, so that on one hand, the vibration generated by the vibrator can be completely transmitted to the display unit through the rigid connection member, and on the other hand, the strength of the vibrator can be enhanced. In practical applications, the shape of the rigid connection member 2 may be different from that of the vibrator, or the shape may be the same, or the areas of the two may be different, and it is not necessarily stated herein that it is within the scope of the present application that the rigid connection member is used to connect the vibrator to the display unit.

Further, in order to guarantee from the thinness of sound production module, rigid connection spare 2 can be for the thin slice structure of making by hard materials such as plastic, pottery or five metals, can both connect vibrator and display element by rigid connection spare like this, can not influence the thickness from the sound production module again. In this embodiment, the rigid connection member is preferably a thin plate made of plastic material, and the thickness of the rigid connection member and the thickness of the vibrator are matched with each other, for example, the thickness of the rigid connection member and the thickness of the vibrator are consistent.

Further, the display unit 1 is an OLED display screen, the OLED display screen includes an OLED display panel 12 and a glass screen 11 located above the OLED display panel 12, and the upper surface of the display panel 12 is attached to the display screen 11, and a rigid connecting member 2 used for connecting the vibrator 3 is arranged on the lower surface. The vibrator converts audio signals into vibration, the rigid connecting piece 3 transmits the vibration to the OLED display screen, and the vibration of the OLED display screen causes the air in front of the OLED display screen to vibrate and make sound.

Further, the self-sounding module can further comprise an image driving unit 4 and a module backboard 5, wherein the image driving unit 4 and the module backboard 5 are sequentially located on one side, which is not connected with the rigid connecting piece, of the vibrator to meet the requirement of image display.

The invention also provides an electronic device which comprises the spontaneous acoustic module.

Further, the electronic device may be a mobile terminal, a computer, a tablet computer, an instrument, a vehicle-mounted navigation machine, and other instruments and electrical appliances that employ the OLED display technology. In this embodiment, the electronic device is preferably a smart television.

It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.

Claims

1. The self-sounding module is characterized by comprising a display unit, wherein at least one sounding device is arranged on the display unit and used for driving the display unit to vibrate so as to enable the display unit to sound; the sound production device comprises a rigid connecting piece and a vibrator, wherein the rigid connecting piece is connected with the display unit and the vibrator so as to transmit the vibration of the vibrator to the display unit;

the vibrator is provided with a follower ring along the circumferential direction, and the follower ring extends in the direction far away from the vibrator;

the number of the vibrators is two, the two vibrators are symmetrically arranged on the display unit, and a connecting line of the centers of the two vibrators is a symmetry axis, so that the two vibrators vibrate the symmetrical positions of the display unit;

the working frequency, the vibration amplitude and the phase of each vibration unit are respectively controlled, so that the whole system sends out a sound effect matched with the program content;

the vibrator is a sheet-type piezoelectric vibrator, and comprises a central part and an edge part, wherein the edge part is arranged along the circumferential direction of the central part, and the thickness of the edge part is smaller than that of the central part;

one surface of the vibrator, which is provided with the rigid connecting piece, is a plane, and the other surface of the vibrator is a step surface;

the rigid connecting piece and the vibrator are matched in shape, so that the vibrator is completely attached to the rigid connecting piece;

the rigid connecting piece is made of plastic.

2. The self-sounding module according to claim 1, wherein the display unit is an OLED display screen.

3. The self-sounding module according to claim 1, wherein the sounding device is one, and the vibration direction of the sounding device is perpendicular to the display unit.

4. The self-sounding module according to claim 1, wherein the sounding device is multiple, and the sounding devices vibrate in the same direction and are perpendicular to the display unit.

5. The self-sounding module according to claim 1, further comprising an image driving unit and a module backplate, wherein the image driving unit and the module backplate are sequentially located on a side of the vibrator not connected to the rigid connecting member.

6. An electronic device comprising the self-sounding module as claimed in any one of claims 1-5.

7. The electronic device of claim 6, wherein the electronic device is a smart television.