CN111862840B

CN111862840B - Screen assembly and electronic equipment

Info

Publication number: CN111862840B
Application number: CN202010757511.3A
Authority: CN
Inventors: 张晨阳; 姬雅倩; 勾越; 韩艳玲; 李秀锋; 郭玉珍; 李付强; 于静
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2022-06-07
Anticipated expiration: 2040-07-31
Also published as: CN111862840A

Abstract

The invention discloses a screen assembly, comprising: the display screen comprises a back plate and a dot matrix light source arranged on the back plate; the edge of the transparent vibrating diaphragm is provided with a supporting part connected with the back plate, and the transparent vibrating diaphragm is suspended above the display screen through the supporting part; one end of the actuating piece is connected with the transparent vibrating diaphragm, and the other end of the actuating piece penetrates through the through hole in the back plate and is positioned below the back plate; and a driving member connected to the other end of the actuating member and driving the actuating member to vibrate. According to the screen assembly, the through hole is formed in the back plate, the transparent vibrating diaphragm is suspended above the display screen, and the actuating piece connected with the transparent vibrating diaphragm and the driving piece below the transparent vibrating diaphragm is arranged at the through hole, so that the integration of the screen and the loudspeaker is realized, and the higher screen occupation ratio is achieved.

Description

Screen assembly and electronic equipment

Technical Field

The invention relates to the technical field of display screens. And more particularly, to a screen assembly and an electronic device.

Background

The LED display screen is also called an electronic display screen or a word-floating screen. The LED display device is composed of an LED dot matrix and a PC panel, contents such as characters, pictures, animation, videos and the like are displayed through the brightness of red, blue and green LED lamps, and all components are display devices with modular structures. A loudspeaker is a transducer device that converts an electrical signal into an acoustic signal. The audio frequency electric energy makes the cone or diaphragm vibrate and generate resonance (resonance) with the surrounding air to make sound through electromagnetic, piezoelectric or electrostatic effect. The traditional LED display screen does not have the function of a loudspeaker power amplifier, an audio line is required to be externally connected with a loudspeaker box, or an independent loudspeaker is arranged on the frame of the display screen.

Disclosure of Invention

The invention aims to provide a screen component integrating screen sounding and electronic equipment.

According to an aspect of the present invention, there is provided a screen assembly including:

the display screen comprises a back plate and a dot matrix light source arranged on the back plate;

the edge of the transparent vibrating diaphragm is provided with a supporting part connected with the back plate, and the transparent vibrating diaphragm is suspended above the display screen through the supporting part;

one end of the actuating piece is connected with the transparent vibrating diaphragm, and the other end of the actuating piece penetrates through the through hole in the back plate and is positioned below the back plate; and

and a driving member connected to the other end of the actuator and driving the actuator to vibrate.

Preferably, a gap is formed between two adjacent point light sources of the dot-matrix light source, and the through hole of the back plate is opened in the gap.

Preferably, the actuating element is a columnar connecting rod, one end of the connecting rod is connected with the transparent vibrating diaphragm, and the other end of the connecting rod is connected with the driving element.

Preferably, the driving member includes a magnet forming a magnetic field, a coil located in the magnetic field, and a movable iron core, one end of the movable iron core is fixed, the other end of the movable iron core is suspended in the coil, and the other end of the connecting rod is connected with the movable iron core.

Preferably, the magnet is U-shaped and is fixedly combined to the bottom surface of the back plate, one end of the movable iron core is connected with the magnet, and the other end of the connecting rod penetrates through the back plate and the magnet to be connected with the movable iron core.

Preferably, the actuator is a voice coil, one end of the voice coil is connected with the transparent diaphragm, and the other end of the voice coil passes through the through hole and is located below the back plate.

Preferably, the actuator comprises a magnet forming a magnetic field, the other end of the voice coil being located in the magnetic field.

Preferably, a sleeve is arranged in the through hole and is sleeved outside the actuating piece.

Preferably, the support portion is formed of a light blocking paste.

Preferably, a light blocking adhesive for isolating light is arranged between two adjacent point light sources which are not provided with the through holes.

Preferably, the actuating member and the driving member are provided in plurality and jointly drive the transparent diaphragm to vibrate.

Preferably, the transparent diaphragms are provided in plurality, and the driving parts respectively drive the corresponding transparent diaphragms to vibrate.

Preferably, at least two of the transparent diaphragms vibrate according to audio signals of left and right channels respectively.

Preferably, the areas of the plurality of transparent diaphragms are different.

According to another aspect of the present invention, there is provided an electronic device including the screen assembly described above.

The invention has the following beneficial effects:

according to the screen assembly, the through hole is formed in the back plate, the transparent vibrating diaphragm is suspended above the display screen, and the actuating piece connected with the transparent vibrating diaphragm and the driving piece below the transparent vibrating diaphragm is arranged in the through hole, so that the integration of the screen and the loudspeaker is realized, and the higher screen occupation ratio is achieved. The transparent vibrating diaphragm is a plane vibrating diaphragm, and can also eliminate the front chamber effect and improve the tone quality.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 shows a cross-sectional view of one embodiment of the present invention.

Fig. 2 shows a cross-sectional view of another embodiment of the invention.

Figure 3 shows a top view of an embodiment of the present invention.

Fig. 4 shows a top view of another embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

In one embodiment of the screen assembly of the present invention as shown in FIG. 1, the screen assembly comprises: a display screen 10, a transparent diaphragm 20, an actuator 30 and a driving member 40. The display screen comprises a back plate 11 and a dot matrix light source 12, wherein the dot matrix light source 12 is composed of a plurality of LED display units, and the LED display units are turned on and off to display characters, pictures, animation, videos and the like. The transparent diaphragm 20 has a support portion 21 at an edge thereof, and the transparent diaphragm 20 is suspended above the display screen 10 through the support portion 21, i.e. a certain distance is provided between the transparent diaphragm 20 and the dot-matrix light source 12. One end of the actuator 30 is connected to the transparent diaphragm 20, and the other end passes through the through hole of the backplate 11 and is located below the backplate. The driving member 40 is connected to the other end of the actuator 30 and can drive the actuator 30 to vibrate, so that the actuator 30 can drive the transparent diaphragm 20 to vibrate, and further, sound is generated through the vibration of the transparent diaphragm 20.

The screen assembly of the invention realizes the integration of the screen and the loudspeaker by arranging the through hole on the back plate 11, arranging the transparent vibrating diaphragm 20 above the display screen 10 and arranging the actuating piece 30 connected with the transparent vibrating diaphragm 20 and the driving piece 40 below the through hole, thereby achieving higher screen occupation ratio. The transparent vibrating diaphragm is a plane vibrating diaphragm, so that the front chamber effect can be eliminated, and the tone quality can be improved.

In this embodiment, a gap is provided between two adjacent LED display units of the dot-matrix light source 12, the through hole is opened at the gap of the LED display units on the back plate 11, and the actuator 30 is located at the gap of the LED display units, so that the actuator 30 does not block the display pixels.

Specifically, the actuator 30 may be a cylindrical connecting rod, one end of which is bonded to the transparent diaphragm 20, and the other end of which is connected to the driving member 40, and since the connecting rod is in sliding fit with the through hole of the back plate 11, the driving member 40 can drive the transparent diaphragm 20 to vibrate through the connecting rod.

The driving member 40 comprises a magnet 41, a coil 42 and a movable iron core 43, the magnet 41 is used for forming a magnetic field, the coil 42 is positioned in the magnetic field and is connected with the audio signal, one end of the movable iron core 43 is fixedly connected with the magnet 41, the other end is suspended in the coil, and the other end of the actuating member 30 is connected with the movable iron core 43. When current flows through the coil 42, the movable iron core 43 is magnetized to form a bar magnet, and the polarity of the bar magnet changes correspondingly along with the change of the current direction, so that the bar magnet interacts with the magnet 41, the movable iron core 43 rotates around a pivot connected with the magnet 41, the vibration of the movable iron core 43 is transmitted to the transparent diaphragm 20 through the connecting rod to push air to vibrate thermally, and the sound production effect is realized.

In this embodiment, the magnet 41 is a U-shaped magnet and fixed on the bottom surface of the back plate 11, and the other end of the connecting rod passes through the back plate 11 and the magnet 41 and is connected to the movable iron core 43.

Referring to fig. 1 again, a sleeve 50 is disposed in the through hole of the back plate 11, the sleeve 50 is fixedly connected to the back plate 11 and sleeved outside the connecting rod, and the connecting rod is in sliding fit with the sleeve 50. The axis of the sleeve 50 is perpendicular to the back plate 11, so that the sliding direction of the connecting rod can be limited, and the connecting rod is prevented from being inclined to influence the display effect. It will be appreciated that the top of the sleeve 50 cannot contact the transparent diaphragm 20, and the sleeve 50 is prevented from interfering with the vibration of the transparent diaphragm 20, and preferably the top surface of the sleeve 50 is flush with the top surface of the LED display unit.

In one embodiment, through holes are first opened in the back plate 11, then the LED or miniLED display units are transferred on the back plate 11, and the black sleeves 50 are transferred at the through holes between the display units.

In this embodiment, light-blocking glue 13 is further filled between adjacent LED display units, and the light-blocking glue 13 can isolate light, thereby reducing light-emitting mutual interference between adjacent pixels. The support portion 21 is also formed of a light blocking adhesive, the top surface of the support portion 21 is higher than the top surface of the LED display unit, and the tensioned transparent diaphragm 20 is bonded to the support portion 21 so that the transparent diaphragm 20 is suspended above the display screen. Finally, the manufactured driving piece 40 with the connecting rod is transferred from the back and is accurately aligned with the through hole in the back plate, and the connecting rod is reliably bonded with the transparent vibrating diaphragm 20.

In another embodiment as shown in fig. 2, the actuator 30 is a voice coil, the driving member 40 is two bar magnets, one end of the voice coil is connected to the transparent diaphragm 20, the other end of the voice coil passes through the through hole of the back plate 11 and is located below the back plate 11, the bar magnets are fixedly combined with the bottom surface of the back plate 11, a magnetic gap is formed between the two magnets, and the other end of the voice coil is located in the magnetic gap. After the voice coil is communicated with the audio signal, the voice coil can drive the transparent vibrating diaphragm 20 above to vibrate up and down according to the left-hand rule, so that the sound production effect is realized.

As shown in fig. 1-3, the actuator 30 and the driving member 40 are provided in plural numbers, which together drive the transparent diaphragm 20 to vibrate. The actuator 30 is uniformly disposed on the transparent diaphragm 20, and the peripheral edge of the transparent diaphragm 20 is provided to be bonded to the support portion 21. The cross-sectional shapes of the sleeve 50, the connecting rod and the voice coil may be circular or square, but the present invention is not limited thereto.

The arrangement position and number of the actuators 30 are not limited, and those skilled in the art can select the actuators according to the size, quality, and compliance of the transparent diaphragm 20.

As shown in fig. 4, the transparent diaphragm 20 may be provided in plural, and thus the actuator 30 and the driving member 40 are also provided in plural, respectively corresponding to the respective transparent diaphragms 20.

The soft, thin and large boundary of the transparent diaphragm 20 can promote low-frequency response, and conversely, promote high-frequency response; the vibration system of the transparent diaphragm 20 has large mass and smoothness, and can widen the low frequency; the middle part of the transparent diaphragm 20 has high rigidity, small mass and small mass of the voice coil, and the high frequency can be expanded. Therefore, different sound effects can be realized by arranging a plurality of transparent diaphragms with different effects.

In this embodiment, transparent diaphragm 20 sets up the different vibrating diaphragms of three area, corresponds high and medium bass respectively, sends the audio signal who corresponds for three transparent diaphragm 20 through the frequency divider, realizes full frequency channel sound production, realizes wider audio effect.

In one embodiment, the transparent diaphragms 20 are provided in two, corresponding to the audio signals of the left and right channels, respectively, to achieve a stereo effect.

The invention also discloses electronic equipment with the screen assembly, and the electronic equipment has a full screen with a higher screen occupation ratio.

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.

Claims

1. A screen assembly, comprising:

the display screen comprises a back plate and a dot-matrix light source arranged on the back plate, wherein the dot-matrix light source comprises a plurality of display units, and a gap is formed between at least two adjacent display units;

the actuating piece is arranged in the gap, one end of the actuating piece is connected with the transparent vibrating diaphragm, and the other end of the actuating piece penetrates through the through hole in the back plate and is positioned below the back plate; and

and the driving piece is connected with the other end of the actuating piece and drives the actuating piece to vibrate.

2. A screen assembly as recited in claim 1, wherein the through-holes of the back plate open at the gap.

3. A screen assembly as defined in claim 2, wherein the actuating member is a rod-shaped connecting rod, one end of which is connected to the transparent diaphragm and the other end of which is connected to the actuating member.

4. A screen assembly as defined in claim 3, wherein the actuating member includes a magnet forming a magnetic field, a coil positioned in the magnetic field, and a movable core having one end fixed and the other end suspended within the coil, the other end of the connecting rod being connected to the movable core.

5. The screen assembly of claim 4, wherein the magnet is U-shaped and is fixedly coupled to the bottom surface of the back plate, one end of the movable iron core is coupled to the magnet, and the other end of the connecting rod passes through the back plate and the magnet and is coupled to the movable iron core.

6. The screen assembly of claim 2, wherein the actuator is a voice coil, one end of the voice coil is connected to the transparent diaphragm, and the other end of the voice coil passes through the through hole and is located below the back plate.

7. A screen assembly as defined in claim 6, wherein the actuator comprises a magnet forming a magnetic field, the other end of the voice coil being located in the magnetic field.

8. A screen assembly as recited in claim 1, wherein a sleeve is disposed within the through hole, the sleeve being coupled to an outer side of the actuator.

9. A screen assembly as recited in claim 1, wherein the support portion is formed from a light blocking glue.

10. A screen assembly as recited in claim 2, wherein a light blocking adhesive for isolating light is disposed between two adjacent dot matrix light sources that are not provided with the through holes.

11. A screen assembly as recited in claim 1, wherein the actuator and the driver are provided in plurality to collectively drive the transparent diaphragm to vibrate.

12. The screen assembly of claim 11, wherein the transparent diaphragms are provided in plurality, and the driving members respectively drive the corresponding transparent diaphragms to vibrate.

13. A screen assembly as recited in claim 12, wherein at least two of the transparent diaphragms vibrate according to left and right audio signals, respectively.

14. A screen assembly as recited in claim 12, wherein the transparent diaphragms are of different areas.

15. An electronic device, comprising a screen assembly as recited in any one of claims 1-14.