TWM606009U - Display panel sounding module and display device - Google Patents

Abstract

The present creation discloses a display panel sounding module and a display device, wherein the display panel sounding module includes: a display panel with two sounding areas on the left and right sides; two sounding modules, respectively set on the two backs of the display panel In the sound area, each sound module has a film substrate, the shape and size of the film substrate and the shape of the sound area match each other, and cover and fit the sound area, and a plurality of piezoelectric vibration components are arranged separately On one side of the film substrate opposite to the display panel, the vibration of the piezoelectric vibrating element is transmitted to the display panel through the film substrate, which can drive the display panel to vibrate and emit sound.

Description

Display panel sounding module and display device

This creation relates to a display panel sounding module and display device, and in particular to a display panel sounding module and display device that integrates piezoelectric elements for mobile phones, handheld computers, notebook computers and other types of electronic devices.

Existing display devices such as monitors, laptops or TVs are usually equipped with speakers to output audio signals. However, the speakers used in existing display devices usually output sound through physical vibration, and their output volume must rely on their own diaphragm Or vibrating body to achieve, so the volume of the diaphragm and the vibrating body will affect the intensity of the output volume, so the volume of the speaker used in the traditional electronic device cannot be reduced, and the internal space of the display device must be occupied, which is not conducive to the thinness of the display device化.

Moreover, due to the limited internal space of the display device, the volume of the speaker cannot be arbitrarily increased, thus limiting the intensity of the output sound field of the speaker built in the display device. In addition, the existing speakers are usually a single-point output sound source state, so it is necessary to set up multiple sets of different speakers in different positions to be able to create different sound field patterns, which increases the number of speakers required for the display device. The problem of the speaker occupying the internal space of the display device is more serious.

Due to the above reasons, the speakers used in the existing display devices have the shortcomings of occupying space and insufficient output sound field strength. Therefore, how to solve the aforementioned problems through structural improvements has become an important issue to be solved by this product. One.

The main purpose of this creation is to solve the problem that the built-in speaker of the existing display device occupies space, and the output sound field strength is not good, and it is not easy to create a special type of sound field.

In order to solve the above technical problem, an embodiment of the present invention provides a display panel sound generating module, which includes: a display panel, the display panel can define a first axis and a second axis, and can define Two sounding areas on the left and right sides of the second axis; two sounding modules are respectively arranged in the two sounding regions on the back of the panel, and each of the sounding modules has a film substrate, two The shape and size of the film substrate and the shape of the two sound-producing regions are matched with each other, and the two film substrates cover the two sound-producing regions in a fully bonded manner, as well as a plurality of piezoelectric vibration components. The piezoelectric vibrating component is disposed on a side surface of the film substrate relative to the display panel, and a plurality of piezoelectric vibrating components generate vibrations that are transmitted to the display panel through the film substrate, so that the display The sound producing area of the panel produces sound as vibration is generated.

In a preferred embodiment of the creative display panel sound module, two of the film substrates are attached to the back of the panel through an adhesive layer, so that the two film substrates and the back of the display panel There are no gaps between.

The creative embodiment also provides a display device with a sound emitting module of the creative display panel, which further includes a housing, and the panel module is installed on the front side of the housing.

The beneficial effect of this creation is that it can reduce the space occupied by the display device by the sound emitting module, and increase the output sound field intensity of the sound emitting module, and it is easy to shape a special type of sound field.

In order to have a better understanding of the features and technical content of this creation, please refer to the following detailed descriptions and drawings about this creation. However, the provided drawings are only for reference and explanation, not to limit this creation.

The following is a specific embodiment to illustrate the implementation of the "display panel sounding module and display device" disclosed in this creation. Those skilled in the art can understand the advantages and effects of this creation from the content disclosed in this specification. This creation can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this creation. In addition, the drawings in this creation are merely schematic illustrations, and are not depicted in actual size, and are stated in advance. The following embodiments will further describe the related technical content of this creation in detail, but the disclosed content is not intended to limit the protection scope of this creation.

It should be understood that although terms such as “first”, “second”, and “third” may be used herein to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are mainly used to distinguish one element from another, or one signal from another signal. In addition, the term "or" used in this document may include any one or a combination of more of the associated listed items depending on the actual situation.

As shown in FIG. 1, it is an embodiment of a display device 10 with a display panel sounding module of the present invention. In this embodiment, the display device 10 has a casing 11, a panel module 20 is disposed on the front side of the casing 11, and a bracket 12 is disposed at the bottom of the casing 11 to install the display device 10 on a desktop. The panel module 20 has a display panel 21, and a sound module 30 is respectively provided on the left and right sides of the back of the display panel 21 to drive the display panel 21 to vibrate and emit sound. The two sound outlet holes 13 on the front side of the housing 11 are used for the sound emitted by the low frequency sound components 34 in the two sound modules 30 to pass through the two sound outlet holes 13.

As shown in FIGS. 2 to 5, the panel module 20 used in this creation includes a display panel 21 and two film substrates 31 specially made on the backlight surface of the display panel 21. The display panel 21 may be one of LCD, OLED, MINI LED, MICRO LED and other types of panels. The display panel 21 may be a rigid and inflexible panel, or a flexible and bendable panel.

The display panel 21 has opposite light emitting surfaces and backlight surfaces. The display panel 21 can define a first axis D1 and a second axis D2 that are perpendicular to each other, and define two symmetrical sound regions 22 in the second axis D2, and the two sound modules 30 are symmetrically disposed on the display panel 21. In the sound area 22 on the left and right sides of the backlight surface, and when the sound module 30 vibrates to generate sound, the sound area 22 of the display panel 21 can also be driven by the sound module 30 to emit sound.

As shown in FIGS. 1 and 5, the two sound modules 30 respectively have a film substrate 31, a piezoelectric vibration component 32, and a low-frequency sound component 34. The two film substrates 31 are substantially rectangular sheets, and are arranged in the two sound emitting areas 22 on the back of the display panel 21 in a fully bonded manner, and there is no gap between the two film substrates 31 and the back of the display panel 21. The area and shape of is matched with the shape and area of the sound area 22 of the display panel 21, so that the two film substrates 31 can be completely attached to the sound area 22 of the display panel 21. The film substrate 31 may be a polymer substrate, or a metal, glass plate body, or a composite material plate body composed of the above-mentioned different materials.

As shown in Figures 2 and 3, in this embodiment, the two film substrates 31 are fully bonded to the back of the display panel 21 through the adhesive layer 33. Therefore, when the piezoelectric vibration component 32 vibrates, the pressure The vibration of the electric vibration component 32 can drive the display panel 21 through the film substrate 31, so that the sound area 22 of the display panel 21 can also be driven by the film substrate 31 to collectively emit sound, so that the display panel 21 also forms a sounding list. Part of the body.

The two film substrates 31 are symmetrically arranged on the back surface of the display panel 21 along the second axis D2, and a distance D is maintained between the two film substrates 31, so that the sound emitting area of the display panel 21 is left and right. Therefore, when the two sound emitting modules 30 and the two left and right sound emitting areas 22 of the display panel 21 emit sound, they can form left and right separated sound channels, and it is easy to create a stereo sound field. In addition, the area of the two sounding regions 22 of the display panel 21 (that is, the area of the two film substrates 31) is not less than 70% of the total area of the display panel 21, so that the two sounding regions 22 of the display panel 21 form a large-area plane The sound is single, and can increase the intensity of the output sound field.

In this embodiment, the piezoelectric vibrating component 32 uses a circular disc-shaped piezoelectric ceramic vibrating element, and its area is smaller than the area of the sound-producing area 22, so the vibration-enhancing area formed by the piezoelectric vibrating component 32 can be regarded as Round dots. Since the piezoelectric vibrating element 32 locally enhances the vibration intensity of the display panel 21 in the vibration-enhancing area, by adjusting the number of the piezoelectric vibrating element 32 or changing the position of the piezoelectric vibrating element 32 in the sound emitting area 22, It is possible to achieve the purpose of changing the position and number of the vibration-enhancing areas of the sound-producing area 22 of the display panel 21, and to adjust the intensity of the output sound field and adjust the output sound quality.

In addition, this creation can further change the type of the sound field output by the sound area 22 of the display panel 21 through the piezoelectric vibration component 32. As shown in FIG. 5, in this embodiment, each piezoelectric vibration component 32 is arranged on the display panel 21 in an array, and one or several piezoelectric vibration components 32 among the plurality of piezoelectric vibration components 32 can be changed. The vibration amplitude is different, and the sound wave intensity generated by each of the sound-producing regions 22 corresponding to the position of the piezoelectric vibration component 32 is different, and different sound field forms can be molded.

In addition, this embodiment can also adjust the phase difference of the sound waves emitted by the piezoelectric vibrating components 32 at different positions, so that the waveforms of the sound waves emitted at different positions of the sound region 22 have phase differences, so that they can be transmitted through the interference of sound waves or the conduction of sound waves. The time difference between the two can create a sound field with a special sense of space (for example: ring-field sound effects), or a directional sound field can be further shaped by beamforming.

In addition, the sound module 30 of the present creation can further include a low-frequency sound-producing component 34. The low-frequency sound component 34 can be a moving-coil sound-producing unit for emitting sound waves of different frequencies from the film substrate 31 to expand the sound-producing mode. The audio range of the sound field output by group 30.

In addition, the sound generating module 30 of the present creation can further form a vibration array through a plurality of piezoelectric vibration components 32, and by changing the shape and arrangement of the vibration array, the vibration pattern of the sound area of the display panel 21 can be changed to adjust the sound quality. Or the purpose of shaping the sound field. For example, as shown in FIG. 6, this is the second embodiment of the creation. In this embodiment, the sound generating module 30 is composed of a plurality of piezoelectric vibration components 32 arranged in a linear manner to form a linear vibration array 35, and the film substrate 31 There are multiple sets of linear vibration arrays 35 on it. Different linear vibration arrays 35 are parallel to each other, and multiple groups of linear vibration arrays 35 can be arranged on the film substrate 31 at different intervals, so that different positions of the sound emitting area of the display panel 21 have different vibration intensities.

The embodiment shown in FIG. 7 is the third embodiment of the creation. In this embodiment, a plurality of linear vibration arrays 35 are also formed by a plurality of piezoelectric vibration components 32, and a plurality of different linear vibration arrays 35 are respectively along The first axial direction D1 and the second axial direction D2 perpendicular to each other are arranged on a side surface of the film substrate 31 opposite to the display panel 21. For example, as shown in FIG. 8, this is the fourth embodiment of the creation. In this embodiment, a plurality of circular vibration arrays 36 are also composed of a plurality of piezoelectric vibration components 32, and the plurality of circular vibration arrays 36 are arranged in a concentric manner on the film The substrate 31 is opposite to one side of the display panel 21.

In addition, the piezoelectric vibration component used in the sound module 30 of the present creation can also have various embodiments. For example, as shown in Figures 9 to 11, they are the fifth to seventh embodiments of the creation, and the fifth to seventh embodiments. In the embodiment, the piezoelectric vibrating element 32 used is in the shape of a strip, and in the fifth embodiment shown in FIG. 9, each piezoelectric vibrating element 32 forms a linear vibrating array, and each linear vibrating array 35 is It is arranged in a parallel manner on a side surface of the film substrate 31 opposite to the display panel 21. As shown in FIG. 10, in the sixth embodiment of the present creation, each piezoelectric vibration component 32 forms a linear vibration array, and is arranged on the film substrate 31 along a first axis D1 and a second axis D2 that are perpendicular to each other. Opposite to one side of the display panel 21. For example, as shown in FIG. 11, this is the seventh embodiment of the creation. In this embodiment, a plurality of circular vibration arrays 36 are formed by the arrangement of straight piezoelectric vibration components 32, and the plurality of circular vibration arrays 36 are arranged concentrically. It is arranged on a side surface of the film substrate 31 opposite to the display panel 21.

As shown in Figure 12, this is the eighth embodiment of the creation. In this embodiment, the piezoelectric vibration component 32 adopted by the sound module 30 adopts a multi-layer structure. The piezoelectric vibration component 32 is composed of a plurality of planar piezoelectric components. The elements 37 are overlapped with each other. Each planar piezoelectric element 37 is composed of a piezoelectric material layer 371 and conductive layers 372 disposed on both sides of the piezoelectric material layer 371, and every two adjacent planar piezoelectric elements The elements 37 are glued to each other through gluing, so that the multiple planar piezoelectric elements 37 are combined into one body, so that the vibrations generated by the multiple planar piezoelectric elements 37 can be accumulated with each other, so that the vibration of the piezoelectric vibration component 32 The amplitude is increased, and the power of the output sound of the sound module 30 is increased.

In more detail, in this embodiment, the piezoelectric material layer 371 of each planar piezoelectric element 37 can be selected from piezoelectric ceramic materials (such as silicon carbide, molybdenum disilicide, zirconium oxide, lanthanum chromate ceramics, etc.). ), can also be made of polymer piezoelectric film (such as: polyvinylidene fluoride PVDF). The two conductive layers 372 can be made of conductive metals (such as gold, silver, copper, aluminum), or conductive metal oxide materials (such as indium tin oxide ITO), or conductive glue or conductive polymer materials (such as polyacetylene, PEDOT). When a voltage signal is introduced to the conductive layers 372 on both sides of the piezoelectric material layer 371, the two conductive layers 372 will have electric fields of different polarities, and the piezoelectric material layer 371 will vibrate due to the inverse piezoelectric effect.

The beneficial effect of this creation is that the sound module 30 can be combined with the back of the display panel 21, and the film substrate 31 and the piezoelectric vibration component 32 in the sound module 30 are both planar structures, so that the sound module 30 The thickness of the display device 10 is reduced without occupying the internal space of the housing 11 of the display device 10, and the display device 10 will not increase in thickness due to the sound module 30 being provided, thereby achieving the purpose of easy thinning. The technology is suitable for use on thinner displays or display screens for thin notebook computers.

In addition, since the film substrate 31 covers a large area on the sound area 22 of the display panel 21, and can drive the display panel 21 to vibrate and sound together, the technology of this creation can form a large area sound area and increase the intensity of sound output. In addition, this creation can adjust the vibration mode and output sound quality of the sound area 22 of the display panel 21 through the arrangement of the piezoelectric vibration components 32 or the change of different vibration intensities, and even create different types of sound fields, thereby achieving increased output The purpose of sound quality.

The above descriptions are only the preferred and feasible embodiments of this creation, which do not limit the scope of patents of this creation. Therefore, all equivalent technical changes made using this creation specification and schematic content are included in the protection scope of this creation .

10: Display device 11: Shell 12: Bracket 13: Sound hole 20: Panel module 21: display panel 22: Sounding area 30: Sound module 31: Film substrate 32: Piezoelectric vibration component 33: Glue layer 34: Low-frequency sound component 35: Linear Vibration Array 36: Ring Vibration Array 37: Planar piezoelectric element 371: Piezoelectric material layer 372: conductive layer D: spacing D1: first axis D2: second axis W1, W2: shock wave

FIG. 1 is a three-dimensional assembly diagram of an embodiment of a creative display panel sounding module and a display device.

2 is a schematic diagram of a combined cross-sectional view of an embodiment of a creative display panel sounding module and a display device.

FIG. 3 is a schematic diagram of a partial enlarged combined cross-sectional view of the sound module of the creative display panel.

Figure 4 is a schematic rear view of the creative display panel sound module.

Figure 5 is a schematic diagram of the working principle of the piezoelectric vibration component of the creation of the sound module.

6 is a schematic rear view of the second embodiment of the creative display panel sound emitting module.

FIG. 7 is a schematic rear view of the third embodiment of the creative display panel sound emitting module.

FIG. 8 is a schematic rear view of the fourth embodiment of the creative display panel sound emitting module.

9 is a schematic rear view of the fifth embodiment of the creative display panel sound emitting module.

10 is a schematic rear view of the sixth embodiment of the creative display panel sounding module.

11 is a schematic rear view of the seventh embodiment of the creative display panel sound emitting module.

FIG. 12 is a schematic diagram of a partially enlarged and combined cross-sectional view of the piezoelectric vibration component used in the eighth embodiment of the creation of the display panel sound module.

10: Display device

11: Shell

12: Bracket

13: Sound hole

20: Panel module

21: display panel

22: Sounding area

30: Sound module

31: Film substrate

32: Piezoelectric vibration component

34: Low-frequency sound component

D: spacing

D1: first axis

D2: second axis

Claims (13)

A display panel sounding module, which includes: A display panel, the display panel can define a first axis and a second axis, and can define two sounding regions on the left and right sides of the second axis; Two sound emitting modules are respectively arranged in the two sound emitting areas on the back of the panel, each of the sound emitting modules has a film substrate, the shape and size of the two film substrates, and the two sound emitting regions The shapes of the regions are matched with each other, and the two film substrates are arranged to cover the two sound-producing areas in a fully bonded manner, and a plurality of piezoelectric vibration components are arranged on the film substrate Relative to one side of the display panel, a plurality of the piezoelectric vibration components generate vibrations and transmit them to the display panel through the film substrate, so that the sound area of the display panel emits as the vibrations are generated sound. The display panel sound generating module according to claim 1, wherein the two film substrates are respectively attached to the back of the panel through an adhesive layer, so that the two film substrates and the back of the display panel are There are no gaps between. The display panel sound module according to claim 2, wherein the area of the plurality of piezoelectric vibration components of each of the sound module is smaller than the area of the film substrate, and the plurality of piezoelectric vibration components are respectively Are arranged at different positions of the sound area corresponding to the sound module. The display panel sounding module according to claim 3, wherein the plurality of piezoelectric vibration components of each of the sounding modules are arranged in an array in the sounding area corresponding to the sounding module, and there are more The vibration amplitudes generated by the piezoelectric vibration components are different from each other, or the generated seismic waves have a phase difference, so as to create different types of sound fields. The display panel sound module according to claim 3, wherein a plurality of the piezoelectric vibrating components are respectively arranged to form a plurality of linear vibrating arrays, and the plurality of linear vibrating arrays are arranged on the film substrate in parallel with each other Opposite to one side of the display panel. The display panel sound module according to claim 3, wherein a plurality of the piezoelectric vibration components are arranged to form a plurality of linear vibration arrays, and the plurality of linear vibration arrays are respectively along the first axis and the The second axial arrangement is arranged on a side surface of the film substrate opposite to the display panel. The display panel sound module according to claim 3, wherein a plurality of the piezoelectric vibration components are respectively arranged to form a plurality of annular vibration arrays, and a plurality of the annular vibration arrays are arranged in a concentric manner on the film base The material is opposite to one side of the display panel. The display panel sound module according to claim 3, wherein a plurality of the piezoelectric vibration components are elongated piezoelectric vibration components, and the plurality of piezoelectric vibration components form a linear vibration array, and a plurality of piezoelectric vibration components form a linear vibration array. The linear vibration arrays are arranged parallel to each other on a side surface of the film substrate opposite to the display panel. The display panel sounding module according to claim 3, wherein a plurality of the piezoelectric vibration components are elongated piezoelectric vibration components, and the plurality of piezoelectric vibration components respectively form a linear vibration array, and the plurality of piezoelectric vibration components form a linear vibration array. The linear vibration arrays are arranged on a side surface of the film substrate relative to the display panel along the first axis and the second axis respectively. The display panel sound generating module according to claim 3, wherein the plurality of piezoelectric vibration components are strip-shaped piezoelectric vibration components, and the plurality of piezoelectric vibration components are arranged to form a plurality of annular vibration arrays, and A plurality of the annular vibration arrays are arranged concentrically on a side surface of the film substrate opposite to the display panel. The display panel sound module according to claim 3, wherein the plurality of piezoelectric vibration components are respectively formed by stacking a plurality of planar vibration elements, and each of the planar vibration elements has a piezoelectric material layer, and Conductive layers located on both sides of the piezoelectric material layer. A display device includes: The display panel sound module according to any one of claims 1 to 11; and A housing, the display panel is installed on the front side of the housing. The display device according to claim 12, wherein the two sound emitting modules further include a low frequency sound emitting element, and the housing is further provided with two sound outlets corresponding to the positions of the two low frequency sound emitting elements.

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