electronic devices

Abstract

The present disclosure relates to an electronic device. The electronic device includes: a display panel assembly; a piezoelectric sound generating unit, the piezoelectric sound generating unit being bonded to the display panel assembly along the thickness direction of the electronic device; and a structural member, the structural member being connected to the display panel assembly or the structural member being connected to the piezoelectric sound generating unit to form a cavity, the cavity being away from the side where the piezoelectric sound generating unit is bonded to the display panel assembly.

Description

Technical Field

[0001] The present disclosure relates to the field of terminal technology, and in particular to an electronic device. Background Art

[0002] With the advancement of scientific research and technology, some communication devices on the market can now generate sound through screen vibration. However, in these technologies, the vibration of the internal sound-generating components can not only propagate to the side of the screen, but also to the side facing away from the screen, resulting in sound leakage and a loss of user privacy. Summary of the Invention

[0003] The present disclosure provides an electronic device to solve the deficiencies in the related art.

[0004] According to an embodiment of the present disclosure, there is provided an electronic device, including:

[0005] display panel assembly;

[0006] a piezoelectric sound generating unit, wherein the piezoelectric sound generating unit is bonded to the display panel assembly along a thickness direction of the electronic device;

[0007] a structural member, wherein the structural member is connected to the display panel assembly to form a cavity and the piezoelectric sound generating unit is disposed in the cavity; or the structural member is connected to the piezoelectric sound generating unit;

[0008] Wherein, the interval between the structural component and the piezoelectric sound generating unit in the thickness direction of the electronic device is greater than zero.

[0009] Optionally, the display panel assembly includes:

[0010] flexible display layer;

[0011] A supporting layer is bonded to the flexible display layer along a thickness direction of the electronic device, and the piezoelectric sound generating unit is connected to the flexible display layer or the supporting layer.

[0012] Optionally, the structural member includes a first avoidance groove, the supporting layer is connected to the structural member to seal the first avoidance groove to form the cavity, and the piezoelectric sound unit is connected to the area of ​​the supporting layer that seals the first avoidance groove.

[0013] Optionally, the supporting layer includes an accommodating cavity extending from a side away from the flexible display layer toward the flexible display layer, and the piezoelectric sound generating unit is disposed in the accommodating cavity and connected to the flexible display layer or the supporting layer;

[0014] The structural member is connected to a side of the supporting layer away from the flexible display layer to seal the accommodating cavity to form the cavity.

[0015] Optionally, the support layer includes an adhesive layer and a main body layer, and the adhesive layer bonds the main body layer and the flexible display layer;

[0016] The accommodating cavity passes through the adhesive layer and the main body layer, and the piezoelectric sound generating unit is connected to the flexible display layer.

[0017] Optionally, the supporting layer includes an adhesive layer and a main layer, the adhesive layer bonds the main layer and the flexible display layer; the accommodating cavity passes through the main layer, the piezoelectric sound unit is connected to the adhesive layer, and the adhesive layer includes a light-shielding adhesive layer.

[0018] Optionally, the thickness of the piezoelectric sound generating unit is smaller than the depth of the accommodating cavity, and the side of the structural member facing the supporting layer is arranged in a planar shape.

[0019] Optionally, the thickness of the piezoelectric sound unit is greater than the depth of the accommodating cavity, and the structural member includes a second avoidance groove that is recessed from the side facing the support layer to the side away from the support layer, and the second avoidance groove is connected to the accommodating cavity to form the cavity.

[0020] Optionally, the structural component includes a middle frame.

[0021] Optionally, in the thickness direction of the piezoelectric sound unit, the gap between the structural member and the piezoelectric sound unit is greater than 0.08 mm and less than 0.2 mm; and / or,

[0022] The piezoelectric sound generating unit includes a piezoelectric ceramic unit or a piezoelectric film unit.

[0023] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0024] It can be seen from the above embodiments that in the present disclosure, by maintaining the gap between the structural member and the piezoelectric sound unit greater than zero in the thickness direction of the electronic device 100, the structural member and the piezoelectric sound unit are not directly connected, which can reduce the sound leakage caused by vibration propagating in the direction away from the display panel assembly, which is beneficial to call privacy protection.

[0025] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0027] Figure 1The figure is a schematic structural diagram of an electronic device according to an exemplary embodiment.

[0028] Figure 2 It is a partial schematic diagram of an electronic device according to an exemplary embodiment.

[0029] Figure 3 yes Figure 1 Comparison graph of sound pressure between the display side and non-display side of an electronic device.

[0030] Figure 4 is a partial schematic diagram of another electronic device according to an exemplary embodiment.

[0031] Figure 5 is a partial schematic diagram of another electronic device according to an exemplary embodiment.

[0032] Figure 6 is a partial schematic diagram of yet another electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0034] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0035] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0036] Figure 1 is a schematic structural diagram of an electronic device 100 according to an exemplary embodiment. Figure 2FIG is a partial schematic diagram of an electronic device 100 according to an exemplary embodiment. Figure 1 and Figure 2 As shown, the electronic device 100 may include a display panel assembly 1, a piezoelectric sound generating unit 2 and a structural member 3. The display panel assembly 1 may include a flexible display layer 11 and a support layer 12 stacked in layers, as shown in FIG. Figure 1 As shown, the piezoelectric sound unit 2 can be bonded to the support layer 12 along the thickness direction of the display panel assembly 1. Specifically, the piezoelectric sound unit 2 can be bonded to the support layer 12 by a first tape 4. The structural member 3 may include a first avoidance groove 31. The support layer 12 can also be bonded to the structural member 3 to close the first avoidance groove 31. The piezoelectric sound unit 2 is connected to the area of ​​the support layer 12 that closes the first avoidance groove 31. In this way, a cavity can be formed by the support layer 12 and the structural member 3. The piezoelectric sound unit 2 is arranged in the cavity, and in the thickness direction of the electronic device 100, the gap between the structural member 3 and the piezoelectric sound unit 2 is greater than zero, so that there is a gap between the structural member 3 and the piezoelectric sound unit 2 to prevent vibration from propagating in a direction away from the display panel assembly 1, resulting in sound leakage.

[0037] Based on the application scenario when the user holds the electronic device to talk, the flexible display layer 11 is usually facing the user's face and the back is facing the surrounding environment. Figure 3 The sound pressure on one side of the flexible display layer 11 and the sound pressure on the side away from the flexible display layer 11 are shown. The sound pressure on one side of the flexible display layer 11 is used as the horizontal reference line to obtain the difference between the sound pressure on one side of the flexible display layer 11 and the sound pressure on the side away from the flexible display layer 11. Figure 2 As shown, the sound pressure difference is basically between -10dB and -15dB, which can reduce sound leakage.

[0038] exist Figure 1 In the embodiment shown, the piezoelectric sound unit 2 may include a piezoelectric thin film sound unit or a piezoelectric ceramic sound unit. The piezoelectric ceramic sound unit may include a piezoelectric ceramic sheet. The piezoelectric ceramic sheet may include a lead zirconate titanate sheet. The piezoelectric thin film sound unit may include a piezoelectric material layer. The piezoelectric material layer may include a polyvinylidene fluoride film layer; or, the piezoelectric material layer may include a polyvinylidene fluoride film composite film layer, for example, a composite film layer of polyvinylidene fluoride film and carbon nanotubes, or a composite film layer of polyvinylidene fluoride film and piezoelectric ceramics; or the piezoelectric material layer may include a polyvinylidene fluoride film copolymer, for example, a PVDF+TrFE copolymer.

[0039] exist Figure 1 In the embodiment of the present invention, the piezoelectric sound generating unit 2 is connected to the side of the support layer 12 away from the flexible display layer 11 as an example. In fact, in other embodiments, such as Figure 3As shown, the support layer 12 may include a housing cavity 121 extending from a side away from the flexible display layer 11 toward the flexible display layer 11. The structural member may be connected to the side of the support layer 12 away from the flexible display layer 11 to seal the housing cavity 121 to form a cavity. The piezoelectric sound unit 2 may be disposed within the housing cavity 121. When the housing cavity 121 penetrates the flexible display layer, the piezoelectric sound unit 2 may be connected to the flexible display layer 11. When the housing cavity 121 does not penetrate the flexible display layer, the piezoelectric sound unit 2 may be connected to the support layer 12. This shortens the propagation path of vibration to the display side of the flexible display layer 11 and improves sound generation efficiency.

[0040] Specifically, if Figure 4 As shown, the support layer 12 may include an adhesive layer 122 and a main layer 123. The adhesive layer 122 may bond the main layer 123 and the flexible display layer 11. The main layer 123 may include a foam 1231 and a copper foil layer 1232. Of course, in other embodiments, the main layer 123 may also include a foam 1231 or a copper foil layer 1232. The accommodating cavity 121 passes through the adhesive layer 122 and the main layer 123. The piezoelectric sound generating unit 2 may be connected to the flexible display layer 11 via a second adhesive tape 5. In another embodiment, as Figure 5 As shown, the accommodating cavity 121 can penetrate the main body layer 123, and the piezoelectric sound generating unit 2 can be bonded to the adhesive layer 122, which can include a light-shielding adhesive layer, so as to Figure 5 The technical solution shown can prevent light leakage from the flexible display layer 11.

[0041] exist Figure 4 In the embodiment shown, the thickness of the piezoelectric sound unit 2 is less than the depth of the accommodating cavity 121, and the side of the structural member 3 facing the support layer 12 can be arranged in a planar shape to close the accommodating cavity 121, which can maintain the integrity of the structural member 3 and avoid weakening the strength of the structural member 3. In particular, when the structural member 3 is the middle frame of the electronic device 100, the overall strength of the electronic device 100 can be improved. In other embodiments, such as Figure 5 As shown, if the thickness of the piezoelectric sound unit 2 is greater than the depth of the accommodating cavity 121, then the structural member 3 may include a second avoidance groove 32 that is recessed from the side facing the support layer 12 to the side away from the support layer 12. The second avoidance groove 32 is connected to the accommodating cavity 121, and in the depth direction of the accommodating cavity 121, the interval between the piezoelectric sound unit 2 and the second avoidance groove 32 is greater than zero, thereby reducing the vibration propagating away from the flexible display layer 11 and reducing sound leakage.

[0042] exist Figure 4 In the embodiment, the piezoelectric sound unit 2 is connected to the flexible display layer 11 and the thickness of the piezoelectric sound unit 2 is less than the depth of the accommodating cavity 121. Figure 5 In the embodiment of FIG, the piezoelectric sound unit 2 is connected to the adhesive layer 122, and the thickness of the piezoelectric sound unit 2 is greater than the depth of the accommodating cavity 121. In fact, in other embodiments, the piezoelectric sound unit 2 may be connected to the flexible display layer 11 and the thickness of the piezoelectric sound unit 2 may be greater than the depth of the accommodating cavity 121; the piezoelectric sound unit 2 may be connected to the adhesive layer 122 and the thickness of the piezoelectric sound unit 2 may be less than the depth of the accommodating cavity 121. This disclosure is not limited to this.

[0043] In the above embodiment, the structural member 3 can be the middle frame of the electronic device 100. In other embodiments, the structural member 3 can also be other parts, and the present disclosure is not limited to this. The above description takes the structural member 3 and the display panel assembly 1 together to form a cavity to reduce sound leakage as an example. In fact, in other embodiments, such as Figure 6 As shown, the structural member 3 may be connected to the piezoelectric sound unit 2, and an avoidance area may be formed on the structural member 3, so that after the structural member 3 is connected to the piezoelectric sound unit 2, the spacing between the structural member 3 and the piezoelectric sound unit 2 can be greater than zero. The structural member 3 may include a middle frame to prevent vibration from propagating in a direction away from the flexible display layer 11. The piezoelectric sound unit 2 connected to the structural member 3 may be connected to the side of the support layer 12 away from the flexible display layer 11 by tape, or the piezoelectric sound unit 2 may be disposed in the accommodating cavity of the support layer 12 to shorten the vibration propagation path and improve the sound efficiency.

[0044] In the above embodiments, in the thickness direction of the electronic device, the gap between the structural member 3 and the piezoelectric sound unit 2 is greater than 0.08 mm and less than 0.2 mm, so as to avoid the gap being too small to prevent sound leakage and the gap being too large to increase the overall thickness of the electronic device.

[0045] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0046] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An electronic device, characterized in that: include: a display panel assembly, the display panel assembly comprising a flexible display layer and a support layer bonded to the flexible display layer along a thickness direction of the electronic device, the support layer comprising a receiving cavity extending from a side away from the flexible display layer toward the flexible display layer, the support layer further comprising an adhesive layer and a main layer, the adhesive layer bonding the main layer and the flexible display layer, the receiving cavity penetrating the adhesive layer and the main layer; a piezoelectric sound generating unit, wherein the piezoelectric sound generating unit is bonded to the display panel assembly along the thickness direction of the electronic device, and the piezoelectric sound generating unit is connected to the flexible display layer; A structural member, wherein the structural member is connected to the display panel assembly to form a cavity, and the piezoelectric sound generating unit is disposed in the cavity, and the structural member is connected to a side of the support layer away from the flexible display layer to seal the accommodating cavity to form the cavity; or the structural member is connected to the piezoelectric sound generating unit; Wherein, the interval between the structural component and the piezoelectric sound generating unit in the thickness direction of the electronic device is greater than zero.

2. The electronic device according to claim 1, wherein The adhesive layer includes a light-shielding adhesive layer.

3. The electronic device according to claim 1, wherein The thickness of the piezoelectric sound generating unit is smaller than the depth of the accommodating cavity, and the side of the structural member facing the supporting layer is arranged in a planar shape.

4. The electronic device according to claim 1, wherein: The thickness of the piezoelectric sound unit is greater than the depth of the accommodating cavity. The structural component includes a second avoidance groove that is recessed from a side facing the support layer to a side away from the support layer. The second avoidance groove is connected to the accommodating cavity to form the cavity.

5. The electronic device according to claim 1, wherein The structural component includes a middle frame.

6. The electronic device according to claim 1, wherein: In the thickness direction of the piezoelectric sound unit, the height of the cavity is greater than 0.08 mm and less than 0.2 mm; and / or the piezoelectric sound unit includes a piezoelectric ceramic unit or a piezoelectric film unit.

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