CN215581694U - Electronic equipment capable of sounding under screen - Google Patents

Abstract

The utility model provides an electronic equipment of sound production under screen, electronic equipment of sound production under screen includes display device and electrostatic speaker, and display device includes display panel, and display panel has a display surface, and electrostatic speaker sets up in display device, just is located the opposite side of display surface for display panel, and electrostatic speaker has first conducting layer, electrostatic diaphragm and second conducting layer, and first conducting layer and second conducting layer set up relatively, and electrostatic diaphragm is located between first conducting layer and the second conducting layer. The utility model can increase the surrounding sound effect by arranging the electrostatic loudspeaker in the display device to produce sound, and the sound effect is clear and real and the distortion rate is low.

Description

Electronic equipment capable of sounding under screen

Technical Field

The present invention relates to electronic devices using speakers, and more particularly, to an electronic device for generating sound under a screen.

Background

With the progress of science and technology, the rapid development of networks and the trend of digitalization, the functions of various electronic devices are diversified, so as to increase the market competitiveness. Taking a notebook computer as an example, besides word processing operation, the notebook computer can also be used for surfing the internet, watching movies, listening to music, playing games, video signals and the like, so as to meet the working and personal entertainment requirements of users. However, as the notebook computer has become more powerful and is also required to be light, thin and compact, the internal space of the notebook computer is limited, and the components thereof are not flexible in configuration.

The notebook computer is generally composed of a display device and a main body which are pivoted with each other, and in terms of sound output function, the notebook computer is usually provided with one or more speakers inside the main body or the display device, and a plurality of sound output holes are provided at the bottom of the main body and the periphery of the display device. At present, a loudspeaker commonly used for a notebook computer is a traditional electromagnetic loudspeaker which mainly comprises a magnet, a coil and a vibrating membrane and forms a resonant cavity. When the electromagnetic type horn receives an electric signal, a changing current passes through the coil to generate an induction magnetic field, the coil is attracted or repelled by the magnet to vibrate back and forth, and the coil can drive the vibrating membrane to vibrate together, so that surrounding air is extruded to cause sound.

The above-mentioned electromagnetic speaker is a very mature technology, but because the notebook computer continuously pursues a light and thin body, the space for installing the speaker inside the notebook computer is quite limited, so that the size of the electromagnetic speaker cannot be too large, the space for the electromagnetic speaker to vibrate air inside the notebook computer is not enough, and in addition to the cost consideration, the electromagnetic speaker mounted inside the notebook computer is often limited in sound performance. Therefore, the user can only obtain better audio listening experience through the earphone or the external loudspeaker.

Therefore, it is an urgent subject to be developed by those skilled in the art to solve the above-mentioned deficiencies of the prior art and ensure a good audio output of the speaker by using the limited space inside the electronic device.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an electronic device for generating sound under a screen, in which an electrostatic speaker is installed inside a display device to generate sound, the electrostatic speaker has a light and thin volume, a real tone color, and an ultra-low distortion rate, and can output a clearer tone quality, so as to overcome the problem of insufficient internal space of the electronic device, and meet the requirements of consumers for light and thin electronic devices and high-quality audio signals.

In order to achieve the above purpose, the electronic device for sounding under a screen of the present invention is implemented by the following technical scheme:

an electronic device capable of generating sound under a screen comprises a display device and an electrostatic loudspeaker. The display device comprises a display panel, wherein the display panel is provided with a display surface. The electrostatic speaker is arranged in the display device and is opposite to the display panel and positioned on the opposite side of the display surface, the electrostatic speaker is provided with a first conducting layer, an electrostatic vibrating membrane and a second conducting layer, the first conducting layer and the second conducting layer are arranged oppositely, and the electrostatic vibrating membrane is positioned between the first conducting layer and the second conducting layer.

According to an embodiment of the present invention, the electronic device is a notebook computer.

According to an embodiment of the present invention, the electronic device further includes an antistatic adhesive layer adhered and attached between the electrostatic speaker and the display panel.

According to the embodiment of the utility model, the antistatic adhesive layer is bonded on the whole surface or the frame adhesive is bonded on the electrostatic loudspeaker.

According to an embodiment of the present invention, the electronic device further includes a matching layer disposed between the electrostatic speaker and the display panel.

According to an embodiment of the present invention, the matching layer is an anti-static matching layer.

According to an embodiment of the utility model, the electronic device further includes an antistatic adhesive layer adhered and attached between the electrostatic speaker and the display panel, and surrounding the matching layer.

According to an embodiment of the present invention, the display device further includes a touch panel disposed on one side of the display surface of the display panel.

According to an embodiment of the present invention, the number of the electrostatic speakers is two or more, and the two or more electrostatic speakers are provided in parallel on the opposite side of the display surface.

According to an embodiment of the present invention, the sound wave diffusion angle of the electrostatic speaker is in a range of 180 to 360 degrees.

Compared with the prior art, the electronic equipment for sounding under the screen provided by the utility model has the advantages that: the electrostatic loudspeaker is arranged in the display device, and the electrostatic loudspeaker has a lighter and thinner volume and is easily integrated with a display panel in the display device, so that the problem of limited internal space of electronic equipment can be effectively solved, and the electronic equipment is favorably lightened and thinned; in addition, the electrostatic loudspeaker has an ultralow distortion rate, the tone quality is clear and fine, the noise can be reduced, and the output tone quality of the electronic equipment can be greatly improved, so that the market demand of pursuing high-tone-quality performance can be met.

The purpose, technical content, features and effects of the present invention will be more readily understood by the following detailed description of the embodiments.

Drawings

Fig. 1 is a schematic diagram of an electronic device for generating an off-screen sound according to a first embodiment of the present invention.

Fig. 2 is a schematic view of the internal configuration of a display device according to a first embodiment of the present invention.

Fig. 3A is a schematic view of an antistatic adhesive layer for frame adhesive bonding according to the present invention.

Fig. 3B is a schematic view of an antistatic adhesive layer for full-face lamination according to the present invention.

Fig. 4 is a schematic view of the internal configuration of a display device according to a second embodiment of the present invention.

Fig. 5 is a schematic view of the internal configuration of a display device according to a third embodiment of the present invention.

Fig. 6A is a schematic diagram of an arrangement of the present invention using a single electrostatic speaker.

Fig. 6B is a schematic diagram of an arrangement of the present invention using two electrostatic speakers.

Fig. 6C is a schematic diagram of an arrangement of the present invention using four electrostatic speakers.

Reference numerals:

10 … electronic device for sound generation under screen 330 … second conductive layer

100 … display device 331 … Aperture

110 … display Panel 340 … high Voltage DC Power supply

350 … step-up transformer on 111 … display surface

120 … touch panel 360 … amplifier

200 … host device 370 … antistatic adhesive layer

300 … Electrostatic speaker 371 … opening

310 … first conductive layer 380 … matching layer

311 … aperture 400 … display device

320 … Electrostatic diaphragm 500 … display device

Detailed Description

Embodiments of the utility model will be further explained by the following description in conjunction with the related drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts. In the drawings, the shape and thickness may be exaggerated for simplicity and convenience. It is to be understood that elements not specifically shown in the drawings or described in the specification are of a type well known to those of ordinary skill in the art. Many variations and modifications may be made by one of ordinary skill in the art in light of the teachings of the present invention.

Referring to fig. 1, a schematic diagram of an electronic device 10 for generating sound under a screen according to a first embodiment of the utility model is shown; meanwhile, referring to fig. 2, a schematic diagram of an internal configuration of the display device 100 according to the first embodiment of the utility model is shown. As shown in fig. 1, the electronic device 10 for generating sound under a screen according to the first embodiment of the present invention is a notebook computer, and is formed by pivotally connecting a display device 100 and a host device 200, wherein the display device 100 is a liquid crystal display device. As shown in fig. 2, the electronic device 10 for generating sound under a screen is provided with an electrostatic speaker 300 inside the display device 100. The display device 100 includes a display panel 110, and a front surface of the display panel 110 (a lower surface of the display panel 110 in fig. 2) is used as a display surface 111. The electrostatic speaker 300 is disposed in the display device 100, and the electrostatic speaker 300 is located opposite to the display panel 110 and on the opposite side of the display surface 111, that is, on the back surface of the display panel 110 (in fig. 2, the upper surface of the display panel 110). Specifically, the electrostatic speaker 300 includes a first conductive layer 310, an electrostatic diaphragm 320, and a second conductive layer 330, wherein the first conductive layer 310 and the second conductive layer 330 are disposed to face each other, the electrostatic diaphragm 320 is sandwiched between the first conductive layer 310 and the second conductive layer 330, a space for allowing the electrostatic diaphragm 320 to vibrate upward is provided between the electrostatic diaphragm 320 and the first conductive layer 310, and a space for allowing the electrostatic diaphragm 320 to vibrate downward is provided between the electrostatic diaphragm 320 and the second conductive layer 330. Since the volume of the electrostatic speaker 300 is very thin and light, such a configuration allows the display apparatus 100 to have a very compact internal structure.

When the electrostatic speaker 300 is operated, the electrostatic diaphragm 300 is charged to a fixed positive voltage by the high voltage DC power source 340, a strong electrostatic field is generated around the electrostatic diaphragm 300, and at the same time, the amplifier 360 is connected to the audio system through a step-up transformer 350, and the output of the amplifier 360 is converted into high voltages having equal intensity but opposite polarities, thereby applying voltages to the first conductive layer 310 and the second conductive layer 330 and continuously converting the polarities of the voltages of the first conductive layer 310 and the second conductive layer 330. By using the principle of like charges repelling each other and opposite charges attracting each other, when one of the first conductive layer 310 and the second conductive layer 330 is applied with a positive voltage and the other is applied with a negative voltage, for example, when the first conductive layer 310 is a positive voltage and the second conductive layer 330 is a negative voltage, the electrostatic diaphragm 300 having a positive charge is repelled by the positively charged first conductive layer 310 and pushed down, and attracted by the negatively charged second conductive layer 330 and attracted up. In this way, the electrostatic diaphragm 300 can vibrate up and down repeatedly, thereby pushing air to generate sound waves.

In the present invention, the first conductive layer 310, the second conductive layer 330 and the electrostatic diaphragm 320 may be substantially square or rectangular with the same shape, and the first conductive layer 310 and the second conductive layer 330 have a plurality of apertures 311, 331 respectively, but the utility model is not limited thereto. In the present invention, the first conductive layer 310 and the second conductive layer 330 may be made of a conductive film with flexibility, and specifically, the first conductive layer 310 and the second conductive layer 330 may be made of a conductive material, or may be made of a material with elasticity, such as paper or an extremely thin non-conductive material layer, the surface of which is plated with a metal film. When the first conductive layer 310 and the second conductive layer 330 are made of a conductive material, the conductive material may be a metal such as iron, copper, aluminum, or an alloy thereof, or may be made of one conductive cloth selected from metal fibers, oxidized metal fibers, carbon fibers, and graphite fibers. When the first conductive layer 310 and the second conductive layer 330 are formed by plating a metal film on a non-conductive material, the non-conductive material may be plastic, rubber, paper, non-conductive cloth (cotton fiber, polymer fiber), etc., the metal film may be a pure metal material such as aluminum, gold, silver, copper, etc., or an alloy thereof, or a bimetal material such as Ni/Au, etc., or one or a combination of indium tin oxide and indium zinc oxide, or a polymer conductive material such as PEDOT, etc. In the present invention, the electrostatic diaphragm 320 may be a dielectric material that can retain electrostatic charge for a long time after being subjected to electrochemical (electrified) treatment, and the electrostatic diaphragm 320 may be made of a single-layer or multi-layer dielectric material, such as Fluorinated Ethylene Propylene (FEP), Polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), partially fluorinated polymer (fluoropolymer), and other suitable materials.

In addition, as shown in fig. 2, the electrostatic speaker 300 and the display panel 110 of the embodiment may be disposed with an antistatic adhesive layer 370 therebetween, in other words, the antistatic adhesive layer 370 is adhered and bonded between the electrostatic speaker 300 and the display panel 110, and the material of the antistatic adhesive layer 370 may be, for example, epoxy resin or other materials capable of achieving antistatic bonding, for example, an antistatic agent is added into a glue material, and the application is not limited thereto. In addition, in the embodiment, a matching layer 380 may be further disposed between the electrostatic speaker 300 and the display panel 310, and the matching layer 380 may be preferably an antistatic matching layer, and the matching layer 380 may be preferably made of an acoustic impedance (acoustic impedance) material similar to that of the first conductive layer 310, the second conductive layer 330, and the electrostatic diaphragm 320, so that the acoustic wave of the matching layer 380 may be selected to match the acoustic wave of the electrostatic speaker 300, and the material of the matching layer 380 may be, for example, a polymer ester or an ester matching metal layer, or an antistatic agent added to an equivalent material.

Further explaining the configuration of the antistatic adhesive layer 370; fig. 3A and fig. 3B are schematic diagrams illustrating an antistatic adhesive layer for frame adhesive bonding and full-surface bonding, respectively. As shown in fig. 3A, the bonding pattern of the antistatic adhesive layer 370 and the electrostatic speaker 300 configured in the present invention may be a frame adhesive bonding, that is, the antistatic adhesive layer 370 forms a frame adhesive. Further, as shown in fig. 2, the matching layer 380 can be disposed in the opening 371 of the frame adhesive formed by the antistatic adhesive layer 370, in other words, the antistatic adhesive layer 370 is surrounded on the periphery of the matching layer 380, so that the matching layer 380 and the antistatic adhesive layer 370 can be integrated into a whole. In addition, as shown in fig. 3B, the bonding type of the antistatic adhesive layer 370 and the electrostatic speaker 300 configured in the present invention may also be full-surface bonding, and the area of the antistatic adhesive layer 370 is preferably greater than or equal to the bonding surface of the electrostatic speaker 300, so as to completely transmit the direct sound effect of the electrostatic speaker 300. In addition, referring to fig. 4, a schematic diagram of an internal configuration of a display device 400 according to a second embodiment of the utility model is shown. In the present embodiment, the matching layer 380 is disposed on the bottom of the electrostatic speaker 300 (the lower surface of the second conductive layer 330 in the figure), and the entire surface of the antistatic adhesive layer 370 is disposed on the bottom of the matching layer 380 in a manner of being attached as shown in fig. 3B, so that the electrostatic speaker 300 and the display panel 110 can be adhered and attached through the antistatic adhesive layer 370, unlike the first embodiment in which the antistatic adhesive layer 370 and the matching layer 380 are integrally formed.

On the other hand, the display device of the utility model can be a touch display device. Referring to fig. 5, a schematic diagram of an internal configuration of a display device 500 according to a third embodiment of the utility model is shown. In this embodiment, the display device 500 includes a touch panel 120 having a touch function in addition to the display panel 110 having the display surface 111. The touch panel 120 is disposed opposite to the display panel 110 and located on one side of the display surface 111 (the lower surface of the display panel 110 in fig. 5) of the display panel 110, and the electrostatic speaker 300 is disposed in the display device 100, and the electrostatic speaker 300 is located opposite to the display panel 110 and located on the opposite side of the display surface 111, that is, on the back surface (the upper surface of the display panel in fig. 5) of the display panel 110. Specifically, the electrostatic speaker 300 includes a first conductive layer 310, an electrostatic diaphragm 320, and a second conductive layer 330, wherein the first conductive layer 310 and the second conductive layer 330 are disposed to face each other, the electrostatic diaphragm 320 is sandwiched between the first conductive layer 310 and the second conductive layer 330, a space for allowing the electrostatic diaphragm 320 to vibrate upward is provided between the electrostatic diaphragm 300 and the first conductive layer 310, and a space for allowing the electrostatic diaphragm 320 to vibrate downward is provided between the electrostatic diaphragm 320 and the second conductive layer 330. As described above, since the electrostatic speaker 300 is very thin and light, such a configuration may allow the display apparatus 500 to have a very compact internal structure.

It should be noted that the number and the positions of the electrostatic speaker 300 disposed on the opposite side of the display surface 111 of the display panel 110 (i.e., the back surface of the display panel 110) are not limited in the present invention. Fig. 6A to 6C are schematic diagrams illustrating different configurations of electrostatic speakers 300. As shown in fig. 6A, the number of the electrostatic speakers 300 of the present embodiment is one, and the electrostatic speakers 300 are disposed at the middle position of the back surface of the display panel 110. As shown in fig. 6B, the number of the electrostatic speakers 300 of the present embodiment is two, and the two electrostatic speakers 300 are juxtaposed to the left and right of the back surface of the display panel 110. As shown in fig. 6C, the number of the electrostatic speakers 300 of the present embodiment is four, and the four electrostatic speakers 300 are arranged two by two symmetrically on the back surface of the display panel 110. In the above embodiment, when the number of the electrostatic speakers 300 is two or more, the two or more electrostatic speakers 300 are all disposed in parallel with each other. Further, the size and appearance of the electrostatic speaker 300 of the present invention are not limited, and in practical applications, the electrostatic speaker 300 may preferably cover the entire back surface of the display panel 110 as much as possible to increase the entire sound emitting area, but is not limited thereto. In the present invention, since the electrostatic speaker 300 can generate sound on both sides, the sound field is wide, and the sound wave diffusion angle of the electrostatic speaker 300 can be adjusted, for example, the sound wave diffusion angle of the electrostatic speaker 300 is preferably adjusted to be in the range of 180 to 360 degrees, so that the audio output of the electronic device can achieve the effect of surround sound.

In summary, according to the electronic device for generating sound under the screen provided by the present invention, the electrostatic speaker is installed inside the display device to generate sound, because the electrostatic speaker has a thinner volume and is easily integrated with the display panel inside the display device, the problem of limited internal space of the electronic device can be effectively solved, and the internal space of the electronic device can have more design flexibility in configuration, which is helpful for achieving the thinning of the electronic device and the compactness and miniaturization of the structure thereof.

In addition, the electrostatic loudspeaker replaces the electromagnetic traditional loudspeaker, the audio distortion rate can be effectively reduced, noise is reduced, the tone color provided by the electrostatic loudspeaker is real, the small volume is still clear, and more transparent and clean sound output can be provided. Meanwhile, the electrostatic loudspeaker can produce sound on the front side and the back side, the sound production area is larger than that of a traditional loudspeaker, the sound field is wide and natural except that the truest sound can be output, the details and the spatial telepresence of the sound can be more prominent, and the excellent listening experience is brought to a user.

Therefore, the electronic device for sounding under the screen provided by the utility model can simultaneously meet the requirements of consumers on lightness and thinness of the electronic device and high-quality audio, is particularly suitable for consumers who seek high-quality audio, and is particularly suitable for creating wide and transparent medium-high frequency through the electrostatic loudspeaker.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, all the equivalent changes or modifications according to the features and the spirit of the claims should be included in the claims of the present invention.

Claims (10)

1. An electronic device for generating sound under a screen, comprising:

a display device including a display panel having a display surface; and

and an electrostatic speaker provided in the display device and located on an opposite side of the display surface with respect to the display panel, the electrostatic speaker including a first conductive layer, an electrostatic diaphragm, and a second conductive layer, the first conductive layer and the second conductive layer being provided to face each other, and the electrostatic diaphragm being located between the first conductive layer and the second conductive layer.

2. The electronic device of claim 1, wherein the electronic device is a laptop computer.

3. The electronic device for generating sound under a screen of claim 1, further comprising an antistatic adhesive layer adhered and attached between the electrostatic speaker and the display panel.

4. The electronic device for generating sound under a screen of claim 3, wherein the antistatic adhesive layer is attached to the electrostatic speaker in a full-face manner or attached to the electrostatic speaker by frame adhesive.

5. The underscreen sound generating electronic device of claim 1, further comprising a matching layer disposed between the electrostatic speaker and the display panel.

6. The underscreen sound generating electronic device of claim 5, wherein the matching layer is an anti-static matching layer.

7. The electronic device for generating sound under a screen of claim 5, further comprising an antistatic adhesive layer adhered and attached between the electrostatic speaker and the display panel and framed on the periphery of the matching layer.

8. The electronic device of claim 1, wherein the display device further comprises a touch panel disposed on a side of the display surface of the display panel.

9. The electronic device for generating sound under a screen of claim 1, wherein the number of the electrostatic speakers is two or more, and the two or more electrostatic speakers are disposed in parallel on opposite sides of the display surface.

10. The electronic device for generating sound under a screen of claim 1, wherein the sound wave diffusion angle of the electrostatic speaker is in the range of 180-360 degrees.

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