CN215453262U

CN215453262U - Electronic device

Info

Publication number: CN215453262U
Application number: CN201990001316.9U
Authority: CN
Inventors: 黄维财; 杨建新; 张婵
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2019-06-17
Filing date: 2019-12-05
Publication date: 2022-01-07
Anticipated expiration: 2029-12-05
Also published as: WO2020253141A1; CN112104957A

Abstract

The application provides an electronic device, including display screen and at least one excitation structure, wherein the laminating of the first portion of each is on the non-display side surface of display screen, and the second portion sets up with first portion interval is relative to, and the second portion can make first portion drive the vibration sound production of display screen under the non-contact condition. The application provides an electronic equipment both can be used to the vibration sound production of excitation stereoplasm display screen, can also be used to the vibration sound production of excitation flexible display screen.

Description

Electronic device

Cross reference to related applications

This patent application claims priority to chinese patent application No. 201910521659.4, filed on 17.6.2019, which is incorporated herein by reference in its entirety.

Technical Field

The present application relates to electronic technologies, and in particular, to an electronic device.

Background

With the continuous development of electronic technology and the continuous improvement of customer requirements, electronic devices are continuously developing towards large size, light weight and thin profile, for example: electronic equipment such as cell-phone, panel computer, TV need guarantee that electronic equipment is whole more frivolous when, and electronic equipment's inside still need set up sound generating mechanism such as speaker. Due to the limitation of the internal space of the electronic equipment, the installation position space reserved for the loudspeaker is small, so that the loudspeaker installed in the electronic equipment can only meet the common playing function generally, more sound effects such as heavy bass and the like cannot be realized, and the playing performance of the loudspeaker is poor.

In some technologies, an electronic device uses a "flat panel sound production technology" to set an electromagnetic exciter behind a picture displayed on a display screen of the electronic device, and the display screen produces sound through bending waves generated by vibration under the action of the electromagnetic exciter. That is, the display screen in the electronic device can be used for both displaying and sounding in place of the speaker. Therefore, the electronic equipment does not need to be provided with a mounting position for the loudspeaker, so that the electronic equipment is designed to be thinner and lighter. The electromagnetic exciter converts the electric signal into mechanical vibration after receiving the electric signal corresponding to the content to be displayed, and the mechanical vibration is directly acted on the display screen, so that the display screen generates bending waves under the action of the electromagnetic exciter, and the display screen vibrates forwards and backwards under the action of the bending waves to realize sound production.

However, in the existing electronic device, the sounding mode of directly exciting the hard display screen by the electromagnetic exciter cannot be applied to the flexible display screen, so that the electronic device with the sounding display screen in the related art has a single application scene.

Disclosure of Invention

The application provides an electronic equipment, through non-contact's excitation structure, the display screen of excitation electronic equipment carries out the sound production to make this electronic equipment's use scene more many units, can all be used in the electronic equipment that has flexible display screen and stereoplasm display screen.

The application provides an electronic device, including: a display screen and at least one actuating structure; each of the excitation structures includes: a first portion and a second portion; the first part is arranged on the non-display side surface of the display screen in an attaching mode, the first part and the second part are arranged oppositely, and a space exists between the first part and the second part; the second part is used for driving the first part to drive the display screen to vibrate and sound.

In an embodiment of the present application, the method further includes: an optical film; the display screen is a liquid crystal screen, the first part is attached to the surface of the non-display side of the liquid crystal screen, and the second part is attached to the surface of the display side of the optical film.

In an embodiment of the present application, the display screen is an OLED screen; the OLED screen includes: the array substrate and the packaging substrate are attached; the array substrate includes: the substrate comprises a substrate base plate, a TFT array, an anode, a light-emitting functional layer and a cathode which are attached; the package substrate includes: the color filter layer is attached to the cathode; the at least one excitation structure is arranged on one side of a substrate base plate of the OLED screen.

In an embodiment of the present application, the display screen is a laser projection screen; the laser projection screen includes: the back plate, the shading layer and the diaphragm are arranged in a fitting manner; the at least one excitation structure is disposed on a side of the back plate of the laser projection screen.

In an embodiment of the present application, the laser projection screen is a hard screen; or, the laser projection screen is a soft screen, wherein the electronic device further comprises an elastic suspension material for fixing the soft screen.

In an embodiment of the present application, the first portion comprises: printing a coil; the printed coil comprises a plurality of lead sets;

the second portion includes: the magnetic conduction bottom plate and the plurality of permanent magnet sheets; the permanent magnet sheets are attached to one side of the magnetic conduction bottom plate, magnetic lines of force between magnetic poles of each permanent magnet sheet are perpendicular to the magnetic conduction bottom plate, and the arrangement directions of the magnetic poles of two adjacent permanent magnet sheets are opposite;

one side of the magnetic conductive bottom plate, which is provided with permanent magnet sheets, is arranged opposite to the printing coil, the central line between two adjacent lead groups in the lead groups is arranged opposite to one permanent magnet sheet in the lead groups, the central line between the adjacent permanent magnet sheets in the permanent magnet sheets is arranged opposite to one lead group in the lead groups, and the permanent magnet sheets are not contacted with the printing coil;

when the printed coil is electrified and the current directions between two adjacent lead groups are opposite, the plurality of permanent magnet sheets are used for driving the printed coil to drive the display screen to vibrate and sound.

In an embodiment of the present application, the printed coil comprises at least one conductive wire; wherein each of the conductive wires is wound one or more times in the same manner to obtain the printed coil, and each of the conductive wires passes through all the conductive wire groups at each winding.

In an embodiment of the application, when the printed coil is connected with a first current, the plurality of permanent magnetic sheets are used for driving the printed coil to drive the display screen to move towards a direction close to the magnetic conductive bottom plate;

when the printing coil is connected with a second current, the plurality of permanent magnet sheets are used for enabling the printing coil to drive the display screen to move towards the direction far away from the magnetic conductive bottom plate;

wherein, for each of the wire sets in the printed coil, the current direction of the wire set when the printed coil is switched on with the first current and the second current is different.

In an embodiment of the present application, the magnitude of the vibration amplitude of the display screen is positively correlated to the magnitude of the current in the printed coil; the frequency of vibration of the display screen is positively correlated with the frequency of switching between the first current and the second current to which the printed coil is switched.

In an embodiment of the application, in the at least one excitation structure, a plurality of permanent magnet pieces corresponding to each excitation structure are disposed on the same magnetic conductive base plate.

In summary, the present application provides an electronic device, including a display screen and at least one excitation structure, wherein a first portion of each is attached to a non-display side surface of the display screen, and a second portion is disposed opposite to the first portion at an interval, and the second portion can make the first portion drive the display screen to vibrate and generate sound under a non-contact condition. The electronic equipment provided by the application can be used for exciting the hard display screen to perform vibration sound production, and can also be used for exciting the flexible display screen to perform vibration sound production, so that the application scene of the electronic equipment is enriched.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of an electronic device with a speaker;

FIG. 1a is a schematic structural diagram of an electronic device with an independent power board;

FIG. 1b is a schematic diagram of a structure of an LCD screen;

FIG. 1c is a schematic structural diagram of an OLED screen;

FIG. 1d is a schematic diagram of a laser projection screen;

FIG. 2 is a schematic diagram of a disassembled electronic device;

FIG. 3 is a schematic cross-sectional view of an electronic device;

FIG. 4 is a schematic diagram of an electronic device with a display screen capable of generating sound according to the related art;

FIG. 5 is a schematic diagram of another electronic device with a sound-generating display screen according to the related art;

FIG. 6 is a schematic diagram of another electronic device with a sound-generating display screen according to the related art;

fig. 7 is a schematic structural diagram of an embodiment of an electronic device provided in the present application;

fig. 8 is a schematic structural diagram of an embodiment of an electronic device provided in the present application;

fig. 9 is a schematic structural diagram of an embodiment of an electronic device provided in the present application;

fig. 10 is a schematic structural diagram of an embodiment of an electronic device provided in the present application;

fig. 11 is a detailed structural diagram of an embodiment of an electronic device provided in the present application;

fig. 12 is a schematic structural diagram of another embodiment of an electronic device provided in the present application;

fig. 13 is a schematic disassembled structure diagram of an embodiment of an electronic device provided in the present application;

fig. 14 is a schematic cross-sectional view illustrating an embodiment of an electronic device provided in the present application;

FIG. 15 is a cross-sectional detail view of an embodiment of an electronic device provided herein;

fig. 16 is a schematic view of the magnetic pole directions of a plurality of permanent magnet pieces provided in the present application;

fig. 17 is a schematic diagram of a first state of an electronic device provided in the present application;

FIG. 18 is a second state diagram of the electronic device provided herein;

FIG. 19 is a schematic structural diagram of one embodiment of a printed coil provided herein;

FIG. 20 is a schematic structural diagram of an embodiment of a resilient suspension material for an electronic device provided herein;

fig. 21 is a schematic structural diagram of another embodiment of an elastic suspension material for an electronic device provided in the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a schematic structural diagram of an electronic device with a speaker, where the electronic device shown in fig. 1 takes a television 1 as an example, and the television 1 includes: a display screen 11, a speaker 12, and a speaker 13; among them, the speaker 12 and the speaker 13 are disposed behind the display screen 11 inside the television set 1. The

speakers

12 and 13 are provided on the left and right sides of the direction in which the user views the display screen 11, respectively, and provide left and right channel sounds, respectively.

For example, taking an electronic device provided with an independent power board as an example, a structure of the electronic device is described, referring to fig. 1a, fig. 1a is a schematic structural diagram of the electronic device provided with the independent power board, and as shown in fig. 1a, the electronic device includes a panel 101, a backlight assembly 102, a main board 103, a power board 104, a rear case 105 and a base 106. Wherein, the panel 101 is used for presenting a picture to a user; the backlight assembly 102 is located below the panel 101, and generally includes optical assemblies for providing sufficient light source with uniform brightness and distribution, so that the panel 101 can normally display images, the backlight assembly 102 further includes a back plate 1021, the main board 103 and the power board 104 are disposed on the back plate 1021, and generally, the back plate 1021 is stamped to form a plurality of convex hull structures, and the main board 103 and the power board 104 are fixed on the convex hulls through screws or hooks; the rear case 105 covers the panel 101 to hide the parts of the display device such as the backlight assembly 102, the main board 103, and the power board 104, thereby achieving an aesthetic effect; and a base 106 for supporting the display device.

In some embodiments, the backlight assembly 102 is not required, for example, an OLED display device.

With the development of the demand of users for electronic devices in the market gradually towards the direction of lightness and thinness, and the continuous progress of electronic technology, more and more key components such as display screens, basic frames and the like in the electronic devices can be realized with a thinner thickness, so that the overall thickness of the electronic devices is reduced. Display screens currently used in electronic devices typically include: liquid Crystal Display (LCD) screens, Organic Light-Emitting Diode (OLED) screens, and laser projection screens.

For example, fig. 1b is a schematic structural diagram of an LCD screen, and as shown in fig. 1b, the LCD screen 11 includes: the liquid crystal display panel 111, the optical film 112, the light guide plate 113, the lamp 114 and the back plate 115 may be covered by a rear case 116, and the light emitting direction of the LCD panel 11 is the direction indicated by the upward arrow in the figure, i.e. the display side of the LCD panel 11.

For example, fig. 1c is a schematic structural diagram of an OLED screen, and as shown in fig. 1c, the OLED screen 11 includes: an array substrate 122 and a package substrate 121; the array substrate 122 sequentially includes: a substrate base 1225, a TFT array 1224, an anode 1223, a light emitting functional layer 1222, and a cathode 1221, and the package base 121 includes: and a color filter layer composed of red filter patterns (R), green filter patterns (G), and blue filter patterns (B). The light-emitting direction of the OLED screen 11 is the direction indicated by the upward arrow in the figure, i.e. the display side of the OLED screen 11.

For example, fig. 1d is a schematic structural diagram of a laser projection screen, and as shown in fig. 1d, the laser projection screen 11 includes: a back plate 133, a light shielding layer 132 and a membrane 131, wherein the laser projection screen 11 can be a soft screen or a hard screen; the light emitting direction of the laser projection screen 11 is the direction indicated by the upward arrow in the figure, i.e. the display side of the laser projection screen 11.

Therefore, inside the tv 1 shown in fig. 1, since the display screen shown in fig. 1b to 1d needs to be accommodated, the space reserved for the speaker becomes smaller and smaller, and the manufacturers of the tv 1 can only reduce the bass and other functions of the speaker to reduce the space occupied by the speaker in the tv 1. The loudspeaker 12 and the loudspeaker 13 installed in the television 1 can only meet the common playing function, cannot realize more sound effect effects, and reduces the playing performance of the television 1.

The playing performance based on the built-in loudspeaker in the existing electronic equipment is poor, and the electronic equipment has strong position limitation when the loudspeaker is arranged, so that the electronic equipment in some technologies has a sound production screen, and the display screen can produce sound through an electromagnetic exciter. For example, referring to fig. 2 and fig. 3, fig. 2 is a disassembled structural diagram of an electronic device, and fig. 3 is a sectional structural diagram of an electronic device.

Wherein, the electronic device shown in fig. 2 and 3 includes: a display screen 11 and at least one electromagnetic actuator 14, two electromagnetic actuators 14 being shown as an example. The display screen 11 can be used for displaying video or image content corresponding to the optical signal; under the action of the electromagnetic exciter 14, the display screen 11 produces sound by bending waves generated by vibration. I.e. the display screen in the electronic device can be used both for displaying and for sounding instead of a loudspeaker. Therefore, in the electronic device, it is not necessary to provide the mounting positions for the

speakers

12 and 13 as shown in fig. 1, and it is also not necessary for the user to externally connect the speakers, thereby realizing a thinner and lighter design of the electronic device. Meanwhile, the electronic equipment can sound through the whole display screen 11, and the larger sound generating device can bring stronger sound effect effects such as heavy bass and the like, so that the electronic equipment can also have stronger playing performance.

For example, fig. 4 is a schematic structural diagram of an electronic device with a display screen capable of generating sound in the related art, and in the embodiment shown in fig. 4, the electronic device includes: the display screen 11 can be an OLED screen, the electromagnetic exciter 14 is arranged on the bottom cover 15, the electromagnetic exciter 14 generates vibration under the action of an electric signal and directly acts on the non-display side of the display screen 11, and the display screen 11 can vibrate and sound.

Fig. 5 is a schematic structural diagram of another electronic device with a display capable of generating sound in related art, where the electronic device shown in fig. 5 includes: a display screen 11, a transmission rod 16 and an electromagnetic exciter 14, said display screen 11 being a laser projection screen. Wherein the electromagnetic exciter is used for converting acoustic electrical signals into mechanical vibrations. Since the transmission rod 16 abuts against the display panel 11, the display panel 11 can be directly driven to vibrate and generate sound by the vibration driving force generated by the electromagnetic exciter 14 through the rigid transmission rod 16.

Fig. 6 is a schematic structural view of another electronic device with a sound-producing display screen in the related art, in the electronic device shown in fig. 6, a screen suspension bracket 17 and an elastic suspension system 18 are used for suspending the display screen 11, and after the electromagnetic exciter 14 and the auxiliary sound-producing board 19 are integrated into a whole, one end of the whole is connected with the display screen 11, and the other end is connected with the screen suspension bracket 17. The electromagnetic exciter 14 generates vibration under the action of the electric signal and directly acts on the display screen 11, so that the display screen 11 vibrates and produces sound.

In summary, in the electronic devices shown in fig. 4 to 6, the screen of the electronic device has design features of an ultra-thin shape, a simple structure and the like by using a technology of the display screen capable of generating sound, and various problems of limitation, inconvenient use, separation of a display screen and sound and the like in the display screen of the conventional electronic device are solved.

In some embodiments of the present application, as can be seen from fig. 4 to 6, in order to implement the vibration sound production of the display screen, the electronic device in the related art needs to set the electromagnetic exciter to be in direct contact with the display screen, so that after the electromagnetic exciter generates the vibration, the vibration is transmitted to the display screen in a mechanical hard transmission manner and the display screen is excited to vibrate and produce the sound.

However, although the excitation mode that the electromagnetic exciter directly contacts the display screen is simple to implement, the electromagnetic exciter can directly act on the display screen with most hardness, and the hard display screen is excited by vibration to vibrate and produce sound. Wherein the rigid display screen comprises: organic Light-Emitting Diode (OLED) screens, etc. With more and more electronic devices using flexible display screens, if a flexible display screen capable of generating sound is required to be arranged, the vibration transmission mode of mechanical hard transmission used by the electromagnetic exciter cannot directly act on the flexible display screen, so that the conventional electromagnetic exciter shown in fig. 4-6 cannot be applied to the electronic devices using the flexible display screen, and the flexible display screen cannot generate sound by vibration.

Even if the electromagnetic exciter shown in fig. 4-6 is arranged on the flexible display screen, the flexible display screen and the electromagnetic exciter cannot be kept on the same plane due to errors such as structural installation, and obvious concave-convex boundary is generated between the electromagnetic exciter and the flexible display screen at the junction when the electromagnetic exciter does not vibrate, so that the appearance is influenced; when the electromagnetic exciter vibrates, the vibration directly acts on the flexible display screen, and when the vibration directly transmitted by the electromagnetic exciter is serious, structural damage can be brought to the flexible display screen.

Therefore, the electronic devices in the related art as shown in fig. 4 to 6 all use the electromagnetic exciter to directly excite the hard display screen to generate sound, and cannot be applied to the flexible display screen, so that the application scenarios of the electronic devices in the related art are single. In addition, in the related art, there is no way in which the LDC display can generate sound in the electronic device using the LCD display.

Based on the deficiency among the above-mentioned correlation technique, the application provides an electronic equipment for the display screen of excitation electronic equipment carries out the sound production through setting up non-contact's excitation structure, thereby makes this electronic equipment's use scene more many units, can have flexible display screen, perhaps has the stereoplasm display screen.

Among them, the electronic equipment that this application provided includes: a display screen and at least one actuating structure. Wherein each excitation structure comprises a first portion and a second portion arranged independently. And the first part is arranged on the non-display side surface of the display screen in an attaching mode, and the first part and the second part are arranged oppositely and have intervals. The second portion of each of the excitation structures is operable to cause the opposing first portion to vibrate and sound the display screen.

The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

In some embodiments of the present application, the display screen of the electronic device may be an LCD screen, and for any actuation structure in the electronic device, the first portion may be disposed on a surface of the non-display side of the liquid crystal screen and the second portion may be disposed on a surface of the optical film on the display side.

For example, fig. 7 is a schematic structural diagram of an embodiment of the electronic device provided in the present application, and if the display screen 11 shown in fig. 7 is an LCD screen, the first portion 101 of the excitation structure 10 is disposed below the liquid crystal screen 111 in a fitting manner, i.e., on the non-display side surface; the second portion 102 is disposed over the optical film 112, i.e., on the display side surface. And the first portion 101 and the second portion 102 are oppositely disposed with a space therebetween without direct contact. In some embodiments of the present application, for an electronic device having an LCD screen as shown in fig. 7, the excitation structure 10 may be made of a transparent material, so as to achieve normal display of the LCD screen without being blocked.

In some embodiments of the present application, the display screen of the electronic device may be an OLED screen, and for any excitation structure in the electronic device, the first portion may be disposed on a non-display side surface of a substrate of the OLED screen.

For example, fig. 8 is a schematic structural diagram of an embodiment of the electronic device provided in the present application, and as the display screen 11 shown in fig. 8 is an OLED screen, for the excitation structure 10, the first portion 101 thereof may be disposed below the substrate 1225, i.e., on the non-display side surface; and the second portion 102 is disposed opposite the first portion 101 with a space therebetween without direct contact. In some embodiments of the present application, the second portion 102 may be attached to a surface of a rear housing of the electronic device disposed below the OLED screen 11.

In some embodiments of the present application, the display screen of the electronic device may be a laser projection screen, and for any excitation structure in the electronic device, the first portion may be disposed on a non-display side surface of a back plate of the laser projection screen.

For example, fig. 9 is a schematic structural diagram of an embodiment of the electronic device provided in the present application, and as the display screen 11 shown in fig. 9 is a laser projection screen, for the excitation structure 10, the first portion 101 thereof may be disposed below the back plate 1225, i.e., on the non-display side surface; and the second portion 102 is disposed opposite the first portion 101 with a space therebetween without direct contact. In some embodiments of the present application, the second portion 102 may be attached to a surface of a rear housing of the electronic device disposed below the laser projection screen 11.

In the embodiments shown in fig. 7-9, only the positional relationship between any one of the excitation structures 10 and the display screen 11 in the electronic device is shown, but in practical applications, a plurality of excitation structures may be simultaneously disposed on the same display screen 11. For example, due to the requirement of left and right channel setting of played sound, a plurality of excitation structures can be respectively arranged in the left and right directions of the electronic device to realize left and right channel playing of the electronic device.

In some embodiments of the present application, fig. 10 is a schematic structural diagram of an embodiment of an electronic device provided by the present application, as shown in fig. 10, a user can view displayed content through a display screen 11 of the electronic device, and meanwhile, since sound played by the electronic device needs to be set with left and right channels, a first excitation structure 10(1) is disposed on the left side of the electronic device at the same height with respect to a viewing direction of the user, and a second excitation structure 10(2) is disposed on the right side of the electronic device at the same height.

Specifically, fig. 11 is a detailed schematic structural diagram of an embodiment of the electronic device provided in the present application, and fig. 11 shows a specific implementation manner of the electronic device in the embodiment shown in fig. 10, where two excitation structures are independently disposed on left and right sides of the electronic device, and a first excitation structure 10(1) on the left side includes: first portion 101(1) and second portion 102(1), second excitation structure 10(2) on the right side includes: a first portion 101(2) and a second portion 102 (2). The first excitation structure 10(1) and the second excitation structure 10(2) on the left and right sides can respectively or simultaneously excite the display screen 11 to vibrate and sound.

In some embodiments of the present application, in yet another embodiment of the present application having an electronic device, if the electronic device includes a plurality of excitation structures, each excitation structure may be separately provided with a first portion and a second portion on the same magnetically conductive base plate.

For example, fig. 12 is a schematic structural diagram of another embodiment of the electronic device provided in the present application. The electronic device shown in fig. 12 includes three excitation structures, which show the first portions 101(1), (101), (2), and 101(3) of the three excitation structures respectively attached to the display screen 11, wherein the same magnetic conductive bottom plate is used for the second portion 102 of the three excitation structures opposite to the first portion.

On the basis of the above-mentioned embodiments of the electronic device shown in fig. 7 to 12, the following describes the excitation structure in the electronic device provided by the present application, and the manner in which the excitation structure excites the display screen to vibrate and generate sound, with reference to the drawings.

Specifically, fig. 13 is a schematic disassembled structure diagram of an embodiment of the electronic device provided in the present application, and fig. 14 is a schematic cross-sectional structure diagram of the embodiment of the electronic device provided in the present application.

As shown in fig. 13 and 14, the electronic device provided in the present embodiment includes: a display screen 11 and at least one stimulation structure 10. Wherein at least one excitation structure 10 is arranged on the non-display side of the display screen 11, wherein the first portion 101 of each excitation structure 10 is arranged on the non-display side surface of the display screen 11 in a fitting manner, and the second portion 102 is arranged opposite to the first portion with a gap.

In a first aspect, the display screen 11 of the electronic device is used to implement a display function of the electronic device, and is used to receive and display video or image content corresponding to the optical signal. Specifically, the display screen 11 provided in the present embodiment includes: liquid Crystal Display (LCD), Organic Light-Emitting Diode (OLED), or laser projection hard screen. In the present embodiment, the display screen 11 of the electronic device is illustrated as a rectangular structure, but is not limited thereto, for example, the display screen 11 may also be an arc-shaped structure.

In a second aspect, the at least one excitation structure 10 of the electronic device may be used to excite the display screen 11 to vibrate for sound emission functions of the electronic device. Taking any one of the excitation structures 10 in the drawings as an example, the second portion 102 of the excitation structure 10 provided in this embodiment includes: a magnetically conductive base plate 1022 and a plurality of permanent magnet pieces 1021, the first part 101 comprising: the coils 101 are printed. Wherein, only the printed coil 101 in the excitation structure 10 is contacted with the display screen 11 and is attached to the non-display side of the display screen 11; while the magnetically conductive base plate 1022 and the plurality of permanent magnet pieces 1021 in the second portion 102 of the excitation structure 10 are not in contact with the display screen 11 and are not in contact with the printed coil 101. In some embodiments of the present application, the surface area of the magnetically conductive base plate 1022 in the excitation structure 10 is smaller than or equal to the surface area of the display screen 11.

Specifically, fig. 15 is a schematic cross-sectional detail view of an embodiment of the electronic device provided in the present application, and as shown in fig. 15, a magnetic conductive bottom plate 1022 in an excitation structure 10 is disposed on a side of a plurality of permanent magnet pieces 1021, and is disposed opposite to a printed coil 101 in the excitation structure 10. In some embodiments of the present application, the magnetically conductive base plate 1022 in the excitation structure 10 may be parallel to the display screen 11, or the magnetically conductive base plate 1022 in the excitation structure 10 may be disposed only opposite to the display screen 11 but need not be exactly parallel.

The printed coil 101 includes a plurality of lead groups, and each lead group includes a plurality of leads. In some embodiments of the present application, the plurality of wire sets in the printed coil 101 are arranged in parallel, and the distance between adjacent guide sets may be the same. The plurality of wires in each wire group may also be arranged in parallel, and the distance between adjacent wires may also be the same. For example, in the example shown in fig. 9, the printed coil 101 includes 5 wire groups of wire groups a, b, c, d, and e, and each of the wire groups a-e includes 5 wires.

The plurality of permanent magnet pieces 1021 are attached to one side of the magnetic conductive bottom plate 421. In some embodiments of the present application, the plurality of permanent magnet pieces 1021 is arranged in parallel, and the distance between adjacent permanent magnet pieces 1021 may be the same. As shown in fig. 15, each permanent magnet piece 1021 is a rectangular outer body as an exemplary illustration, and the shape of the permanent magnet piece 1021 is not limited in the present application.

In some embodiments of the present application, a connection line between the magnetic poles of each permanent magnet piece 1021 may be perpendicular to the magnetically conductive bottom plate 1022. The long sides of the rectangular outer bodies of all the permanent magnet pieces 1021 are arranged in parallel, and the arrangement directions of the magnetic poles of two adjacent permanent magnet pieces 1021 are opposite. Fig. 16 is a schematic view of a magnetic pole direction of a plurality of permanent magnet sheets provided in the present application, where each permanent magnet sheet 1021 includes: north (N) and south (S). The magnetic bottom plate 1022 is arranged in the x direction, and after an x-y rectangular coordinate system is established, the magnetic lines of force between the N pole and the S pole of each permanent magnet piece 1021 are perpendicular to the x direction and parallel to the y direction. For any two adjacent permanent magnet pieces 1021 in the plurality of permanent magnet pieces 1021, when the N pole of one permanent magnet piece 1021 corresponds to the positive y direction, the N pole of the other permanent magnet piece corresponds to the negative y direction.

In some embodiments of the present application, in the present embodiment, when the magnetic conductive base plate 1022 in the excitation structure 10 is disposed on a side of the plurality of permanent magnet pieces 1021 opposite to the printed coil 101 in the excitation structure 10, the plurality of permanent magnet pieces 1021 are disposed opposite to the plurality of conductor sets in the printed coil 101. At this time, the center line between two adjacent lead groups in the printed coil 101 is disposed opposite to one permanent magnet piece 1021, and the center lines of two adjacent permanent magnet pieces 1021 in the plurality of permanent magnet pieces 1021 are also disposed opposite to one lead group.

For example, in the example shown in fig. 15, the center line between the lead group a and the lead group B is opposed to the permanent magnet sheet B, the center line between the lead group B and the lead group C is opposed to the permanent magnet sheet C, the center line between the lead group C and the lead group D is opposed to the permanent magnet sheet D, and the center line between the lead group D and the lead group E is opposed to the permanent magnet sheet E, and the center lines between all the lead groups are parallel and equally spaced. Meanwhile, the central line between the permanent magnet sheet A and the permanent magnet sheet B is opposite to the lead group a, the central line between the permanent magnet sheet B and the permanent magnet sheet C is opposite to the lead group B, the central line between the permanent magnet sheet C and the permanent magnet sheet D is opposite to the lead group C, the central line between the permanent magnet sheet D and the permanent magnet sheet E is opposite to the lead group D, and the central lines of all the permanent magnet sheets are parallel and equidistant.

In some embodiments of the present application, the materials of the plurality of permanent magnet pieces 1021 include, but are not limited to: samarium cobalt magnet, ferrite magnet, neodymium iron boron magnet and alnico magnet etc.. The material of the magnetic bottom plate 1022 includes but is not limited to: the thickness of the magnetic conductive bottom plate 1022 can be in the range of 1-3 mm. The printed coil 101 includes: metal foil, transparent ITO, transparent nano silver ring loop type conductive coils and the like, and the direct current resistance of the conductive coils can be in the range of 2-32 omega. The printed coil 101 has a thin carrier substrate to be attached to the display screen through the carrier substrate, and the material of the carrier substrate includes, but is not limited to, PET, polyimide, and the like.

In some embodiments of the present application, the area of the magnetically conductive base plate 1022 where the plurality of permanent magnet pieces are not disposed may be provided with ventilation holes to improve the heat dissipation capability of the display screen 11 where the excitation structure 10 is disposed.

The principle of the electronic device that the exciting structure 10 converts the electric energy into the mechanical energy by electromagnetic induction to make the display screen 11 generate sound will be described with reference to fig. 17 and 18. Fig. 17 is a schematic diagram of a first state of an electronic device provided in the present application; fig. 18 is a second state diagram of the electronic device provided in the present application. In the example shown in fig. 17 and 18, the N poles of the permanent magnet pieces A, C and E are directed to the display screen 11 side, and the S poles of the permanent magnet pieces A, C and E are directed to the magnetic conductive bottom plate 1022 side; the N poles of the permanent magnetic sheets B and D point to the magnetic conductive bottom plate 1022 side, and the S poles of the permanent magnetic sheets B and D point to the display screen 11 side.

First, as shown in fig. 11, when the direction of the current in the lead groups a, c, and e in the printed coil 101 is the first direction shown in the figure, and the current in the lead groups b and d in the printed coil 101 is the second direction shown in the figure, the state of the electronic apparatus is described as the first state. The first direction and the second direction are parallel to the lead group, and the first direction and the second direction are opposite. The current direction of the lead group a is the first direction, and the magnetic induction intensity direction received by the lead group a is the direction in which the N pole of the permanent magnet sheet a points to the S pole of the permanent magnet sheet B, at this time, it can be determined according to the left-hand rule that the ampere force direction received by the lead group a in fig. 17 is downward, that is, the ampere force direction is the direction perpendicular to the magnetic conductive bottom plate 1022.

Similarly, for the wire groups b, c, and d, according to the current direction of each wire group and the direction of the received magnetic induction intensity, it can be determined according to the left-hand rule that the directions of the ampere forces received by the wire groups b-d are all downward, i.e., the directions of the ampere forces vertically pointing to the magnetic conductive bottom plate 1022. Therefore, when the electronic device is in the first state as shown in fig. 17, all the wire sets of the printed coil 101 are subjected to an ampere force in the direction of the magnetic conductive base plate 1022 under the action of electromagnetic induction, and since the printed coil 101 is attached to the display screen 11, the printed coil 101 drives the display screen 11 to move in the direction of the magnetic conductive base plate 1022 under the action of the ampere force.

Next, as shown in fig. 18, when the direction of the current in the lead groups a, c, and e in the printed coil 101 is the second direction shown in the figure, and the current in the lead groups b and d in the printed coil 101 is the first direction shown in the figure, the state of the electronic apparatus is described as the second state. The first direction and the second direction are parallel to the lead group, and the first direction and the second direction are opposite. The current direction of the wire group a is the second direction, and the magnetic induction intensity direction received by the wire group a is the direction in which the N pole of the permanent magnet sheet a points to the S pole of the permanent magnet sheet B, at this time, it can be determined according to the left-hand rule that the direction of the ampere force received by the wire group a in fig. 18 is upward, that is, the direction of the ampere force is the direction vertically away from the magnetic conductive bottom plate 1022.

Similarly, for the wire groups b, c, and d, according to the current direction of each wire group and the direction of the received magnetic induction, it can be determined according to the left-hand rule that the directions of the ampere forces received by the wire groups b-d are all upward, i.e., the directions perpendicular to and away from the magnetic conductive bottom plate 1022. Therefore, when the electronic device is in the second state as shown in fig. 18, all the wire sets of the printed coil 101 are subjected to an ampere force in a direction away from the magnetic conductive bottom plate 1022 under the action of electromagnetic induction, and as the printed coil 101 is attached to the display screen 11, the printed coil 1022 drives the display screen 11 to move in the direction away from the magnetic conductive bottom plate 1022 under the action of the ampere force.

As can be seen from fig. 17 and 18, when the electronic device is switched back and forth between the first state and the second state at a fixed frequency, the display screen 11 of the electronic device is driven by the printed coils to move back and forth at the same frequency, so that bending waves are generated at the joint of the display screen 11 and the printed coils 101, and the bending waves can be spread outward from the joint to the whole display screen 11, and finally, the vibration sounding of the display screen 11 by the bending waves generated by the back and forth movement of the surface of the display screen 11 is realized.

That is to say, the vibration frequency of the display screen 11 is positively correlated with the switching frequency of the electronic device between the first state and the second state, and when the switching frequency of the electronic device between the first state and the second state is higher, the vibration frequency of the display screen 11 that can reciprocate under the driving of the printed coil is also higher, and at this time, the sound emitted by the display screen 11 is higher; when the switching frequency of the electronic device between the first state and the second state is smaller, the vibration frequency of the display screen 11 that can reciprocate under the driving of the printed coil is also smaller, and the sound emitted by the display screen 11 is smaller.

Meanwhile, the vibration amplitude of the reciprocating motion of the display screen is positively correlated with the current flowing in the printed coil. When the current of the lead group in the printed coil is larger, the ampere force of the lead group under the action of the permanent magnet sheet is larger, and the vibration amplitude of the display screen driven by the printed coil is larger; and when the current that the wire group in the printing coil passes is smaller, the ampere force that the wire group received under the effect of permanent magnetism piece is smaller, then the vibration amplitude of display screen 1 is also smaller under the printing coil drive.

In summary, in the electronic device provided in the above embodiment, the printed coil in the arranged excitation structure is attached to the display side surface of the display screen, the plurality of permanent magnetic sheets are attached to the magnetic conductive base plate, and the magnetic conductive base plate is arranged opposite to the printed coil on the side where the plurality of permanent magnetic sheets are arranged. When the printed coil is electrified, the printed coil can drive the display screen to vibrate and sound under the action of the permanent magnetic sheets.

In the excitation structure provided by the embodiment, the permanent magnet sheets and the magnetic conduction bottom plate except the printed coil are not in direct contact with the display screen, and the printed coil is thinner, so that the excitation structure can be used for exciting the hard display screen to vibrate and sound, and can also be used for driving the flexible display screen to vibrate and sound, and the application scenes of the electronic equipment are enriched. In addition, the excitation structure arranged on the electronic equipment in the embodiment can prevent the appearance from being influenced by the concave-convex boundary generated on the flexible display screen due to errors such as structure installation when the display screen is not excited; and when the display screen is excited to vibrate, the flexible display screen can be driven by the printed coil to vibrate, and structural damage to the flexible display screen can be avoided.

In some embodiments of the present application, in the examples shown in fig. 13-18, only the parallel portions of the plurality of conductor sets in the printed coil are shown for illustrating the arrangement of the plurality of conductor sets in the printed coil, while in a specific implementation of the printed coil, the plurality of conductor sets in the printed coil may be obtained by diffracting at least one conductor a plurality of times in the same manner.

Specifically, fig. 19 is a schematic structural diagram of an embodiment of the printed coil provided by the present application, and as shown in fig. 19, when the starting point of one conductive wire in the drawing is S1 and the ending point of the conductive wire in the drawing is S2, the conductive wire is repeatedly wound 5 times in the same manner, and passes through the conductive wire groups a, b, c, d, e, f, g, and h once at each winding. And finally, obtaining a printed coil comprising a plurality of lead groups, wherein each lead group in the printed coil comprises the same number of leads, all the lead groups are parallel to each other, and the leads in all the lead groups are also parallel to each other.

When the target conductor is applied with the first current, S1 is positive and S2 is negative, the current direction of the conductor sets a, c, e and g is rightward and the current direction of the conductor sets b, d, f and h is leftward in the printed coil shown in fig. 19. When the printed coil is applied to realize the first state of the electronic device shown in fig. 17, the display screen can be driven to move towards the direction close to the magnetic conductive bottom plate. When the target conductor receives the second current, S1 is negative and S2 is positive, the direction of the current in the conductor sets a, c, e and g is left and the direction of the current in the conductor sets b, d, f and h is right in the printed coil shown in fig. 19. When the printed coil is applied to realize the second state of the electronic device shown in fig. 18, the display screen can be driven to move in a direction away from the magnetic conductive bottom plate. And the vibration frequency of the display screen in the electronic device is positively correlated with the switching frequency between the first current and the second current in the target wire.

In some embodiments of this application, if the display screen is flexible display screen, receive the damage in order to prevent flexible display screen reciprocating vibration in-process, can set up elasticity suspension material for the display screen, be exclusively used in the parcel behind the display screen, set up on electronic equipment's frame, make the display screen can when vibrating under printed coil's the effect, the vibration can be decomposed uniformly under elasticity suspension material's effect, and prevents that the vibration of display screen from meetting the frame of stereoplasm and causing the damage to flexible display screen.

For example, fig. 20 is a schematic structural diagram of an embodiment of a resilient suspension material for an electronic device provided in the present application, and as shown in fig. 20, after the display screen 11 is wrapped by the resilient suspension material 21, the display screen and at least one of the excitation structures are fixed together by a frame 22. The elastic suspension material 21 comprises: an elastic damping material. When the display screen 11 shown in fig. 20 is driven by the printed coil 101 to vibrate up and down, the vibration can be absorbed by the elastic suspension material 21, so as to prevent the flexible display screen 11 from directly contacting the rigid frame 22 and causing damage when vibrating.

For another example, fig. 21 is a schematic structural diagram of another embodiment of an elastic suspension material for an electronic device provided in the present application, where the elastic suspension material is a spring 23, one end of the spring 23 is connected to the display screen 11, and the other end is connected to a frame 24 of the electronic device. The display screen 11 and the at least one excitation structure are jointly fixed by a frame 24. When the display panel 11 shown in fig. 21 is driven by the printed coil 101 to vibrate up and down, the vibration can be absorbed by the spring 23, so as to prevent the flexible display panel 11 from directly contacting the rigid frame 24 and causing damage when vibrating.

It should be noted that the electronic devices described in the embodiments of the present application include, but are not limited to, the following devices: cell phones, tablet computers, desktop computers, televisions, and other appliances with display screens, such as: washing machines, refrigerators, and the like.

The foregoing is a preferred embodiment of the present application, which is not intended to be limiting in any way, and any simple modifications, equivalent variations and modifications made to the foregoing embodiment according to the technical spirit of the present application are within the scope of the present application.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic device, comprising:

a display screen and at least one actuating structure;

the excitation structure includes: a first portion and a second portion; the first part is arranged on the non-display side surface of the display screen in an attaching mode, the first part and the second part are arranged oppositely, and a space exists between the first part and the second part;

the second part is used for driving the first part to drive the display screen to vibrate and sound.

2. The electronic device of claim 1, further comprising:

an optical film; the display screen is a liquid crystal screen, the first part is attached to the surface of the non-display side of the liquid crystal screen, and the second part is attached to the surface of the display side of the optical film.

3. The electronic device of claim 1,

the display screen is an OLED screen;

the OLED screen includes: the array substrate and the packaging substrate are attached;

at least one of the excitation structures is disposed on a substrate side of the OLED screen.

4. The electronic device of claim 1,

the display screen is a laser projection screen;

the laser projection screen includes: the back plate, the shading layer and the diaphragm are arranged in a fitting manner;

the at least one excitation structure is disposed on a side of the back plate of the laser projection screen.

5. The electronic device of claim 4,

the laser projection screen is a hard screen;

or, the laser projection screen is a soft screen, wherein the electronic device further comprises an elastic suspension material for fixing the soft screen.

6. The electronic device of any of claims 1-5,

the first portion includes: printing a coil; the printed coil comprises a plurality of lead sets;

the second portion includes: the magnetic conduction bottom plate and the plurality of permanent magnet sheets; the permanent magnet sheets are attached to one side of the magnetic conduction bottom plate, magnetic lines of force between magnetic poles of the permanent magnet sheets are perpendicular to the magnetic conduction bottom plate, and the arrangement directions of the magnetic poles of two adjacent permanent magnet sheets are opposite;

7. The electronic device of claim 6,

the printed coil comprises at least one wire;

and the conducting wires are wound once or more times in the same manner to obtain the printed coil, and the conducting wires pass through all the conducting wire groups during winding.

8. The electronic device of claim 7,

when the printing coil is connected with a first current, the plurality of permanent magnet sheets are used for enabling the printing coil to drive the display screen to move towards the direction close to the magnetic conductive bottom plate;

wherein the direction of current flow of the conductor set when the printed coil is switched on by a first current and a second current is different.

9. The electronic device of claim 8,

the vibration amplitude of the display screen is positively correlated with the current in the printed coil;

the frequency of vibration of the display screen is positively correlated with the frequency of switching between the first current and the second current to which the printed coil is switched.

10. The electronic device of claim 6,

in the at least one excitation structure, a plurality of permanent magnet sheets corresponding to each excitation structure are arranged on the same magnetic conduction bottom plate.