Display panel and electronic device

Abstract

The present disclosure relates to a display panel and an electronic device. The display panel comprises a display layer, a protection layer and a support layer, the display layer is arranged between the protection layer and the support layer, and the support layer is connected with the display layer, the support layer comprises a piezoelectric film layer, the piezoelectric film layer drives the display layer and the protection layer to vibrate when the piezoelectric film layer deforms.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of terminals, and in particular, to a display panel and electronic device BACKGROUND

[0002] Currently, in order to buffer the impact force from the back, the display panel configured by the electronic device usually sets a buffer foam on the back away from the display side of the display panel, and buffers the impact force through the buffer foam. However, the strength of the buffer foam is weak, and a large deformation may occur when a small impact force is encountered, thereby causing a pit or a bad point on the screen and affecting the display effect. SUMMARY

[0003] The present disclosure provides a display panel and electronic device to solve the problems in the related art.

[0004] According to a first aspect of an embodiment of the present disclosure, a display panel is provided, comprising a display layer, a protection layer and a support layer, the display layer is arranged between the protection layer and the support layer, and the support layer is connected with the display layer, the support layer comprises a piezoelectric film layer, and the piezoelectric film layer drives the display layer and the protection layer to vibrate when the piezoelectric film layer deforms.

[0005] Optionally, the support layer only comprises the piezoelectric film layer, and the piezoelectric film layer is connected with a side of the display layer away from the protection layer.

[0006] Optionally, the support layer further comprises a buffer layer, and the buffer layer and at least one of the piezoelectric film layer are connected to a side of the display layer away from the protection layer.

[0007] Optionally, the buffer layer is arranged adjacent to the piezoelectric film layer, or the buffer layer is arranged around at least a part of the piezoelectric film layer, or the piezoelectric film layer is arranged around at least a part of the buffer layer.

[0008] Optionally, the display panel further comprises:

[0009] An electrostatic protection layer, the electrostatic protection layer is connected with the support layer, and the support layer is arranged between the electrostatic protection layer and the display layer.

[0010] Optionally, the support layer further comprises a buffer layer, and the buffer layer and the piezoelectric film layer are both connected with the electrostatic protection layer and the display layer.

[0011] Optionally, the support layer further comprises a buffer layer, the buffer layer is arranged around the piezoelectric film layer, the buffer layer is connected with the display layer and the electrostatic protection layer respectively, the piezoelectric film layer is connected with the display layer and is spaced apart from the electrostatic protection layer by a certain distance.

[0012] The piezoelectric film layer, the static electricity protection layer and the buffer layer enclose an acoustic cavity, or the piezoelectric film layer, the static electricity protection layer, the display layer and the buffer layer enclose an acoustic cavity.

[0013] Optionally, the support layer further comprises a buffer layer, the buffer layer is arranged around the piezoelectric film layer, the buffer layer is connected with the display layer and the static electricity protection layer respectively, the piezoelectric film layer is connected with the static electricity protection layer and is spaced apart from the display layer by a distance;

[0014] The piezoelectric film layer, the display layer and the buffer layer enclose an acoustic cavity, or the piezoelectric film layer, the static electricity protection layer, the display layer and the buffer layer enclose an acoustic cavity.

[0015] Optionally, the static electricity protection layer comprises a gas permeable hole.

[0016] Optionally, further comprising:

[0017] A first heat dissipation layer, the first heat dissipation layer is arranged between the support layer and the static electricity protection layer.

[0018] Optionally, further comprising:

[0019] A second heat dissipation layer, the second heat dissipation layer is arranged between the support layer and the display layer.

[0020] According to a second aspect of the embodiments of the present disclosure, an electronic device is improved, comprising the display panel in any of the above embodiments.

[0021] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects:

[0022] As can be seen from the above embodiments, in the display panel of the present disclosure, the display layer can be supported by the connection between the support layer and the display layer, which is conducive to improving the impact resistance of the display panel as a whole. Since the support layer can include a piezoelectric film layer, the display panel can be vibrated by the piezoelectric film layer to achieve the purpose of vibration sound and tactile feedback. At the same time, compared with the scheme of supporting the display layer by foam in the related art, the piezoelectric film layer can improve the impact resistance of the display panel.

[0023] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0025] Figure 1 FIG. 1 is a cross-sectional view of a display panel according to an exemplary embodiment.

[0026] Figure 2 FIG. 2 is a plan view of a display panel according to an exemplary embodiment.

[0027] Figure 3 FIG. 3 is a graph showing a pressure-strain curve of a buffer foam and a piezoelectric film layer.

[0028] Figure 4 FIG. 4 is a plan view of another display panel according to an exemplary embodiment.

[0029] Figure 5 FIG. 5 is a plan view of yet another display panel according to an exemplary embodiment.

[0030] Figure 6 FIG. 6 is a cross-sectional view of a display panel according to an exemplary embodiment.

[0031] Figure 7 FIG. 7 is another cross-sectional view of a display panel according to an exemplary embodiment.

[0032] Figure 8 FIG. 8 is a further cross-sectional view of a display panel according to an exemplary embodiment.

[0033] Figure 9 FIG. 9 is a still further cross-sectional view of a display panel according to an exemplary embodiment.

[0034] Figure 10 FIG. 10 is a structural view of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0035] The exemplary embodiments will now be described in detail with reference to the accompanying drawings. The following description is with reference to the drawings, in which like numerals represent like elements throughout the several figures. The following detailed description is not intended to be understood in a restrictive sense, and is not to be limited to all of the embodiments set forth herein. Rather, the exemplary embodiments described herein are merely examples of apparatus and methods consistent with the present disclosure, which is set forth in the appended claims.

[0036] The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the present disclosure and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will 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.

[0037] It should be understood that, although the terms first, second, third, etc. can be employed in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to differentiate one piece of information from another piece of information of the same type. For example, without departing from the scope of the disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon determination" or "in response to determining".

[0038] Figure 1 is a cross-sectional view of a display panel shown in an exemplary embodiment. As shown in Figure 1 The display panel 100 can include a display layer 1, a protection layer 2 and a support layer 3, the display layer 1 is disposed between the protection layer 2 and the support layer 3, the protection layer 2 can be disposed closer to the outside of the display panel 100 relative to the display layer 1, the protection layer 2 can include a cover glass or a film layer, the cover glass can resist the impact force from the front of the display panel 100, and at the same time, the display panel 100 is protected from dust. The support layer 3 can be connected with the display layer 1, and the support layer 3 can include a piezoelectric film layer, when the piezoelectric film layer is powered, the piezoelectric film layer can deform, thereby driving the display layer 1 and the protection layer 2 to vibrate, realizing the vibration sound of the display panel 100, and when the user touches or presses the display panel 100, the piezoelectric film layer can be powered to drive the display layer 1 and the protection layer 2 to vibrate, thereby providing tactile feedback to the touch or press operation of the user. The display panel 100 can include an organic light-emitting display panel or a liquid crystal display panel, and the present disclosure is not limited thereto.

[0039] Further, as shown in Figure 1 The display panel 100 can further include an electrostatic protection layer 4, the electrostatic protection layer 4 can be connected with the support layer 3, and the support layer 3 is disposed between the display layer 1 and the electrostatic protection layer 4, so that in the process of powering the piezoelectric film layer, the electrostatic protection layer 4 can be used for the purpose of electrostatic protection. The electrostatic protection layer 4 can include a copper foil layer, and as shown in Figure 1 The electrostatic protection layer 4 can include a ventilation hole 41, and the piezoelectric film layer and the display layer can be cooled through the electrostatic protection layer 4.

[0040] As can be seen from the above embodiment, in the display panel 100 of the present disclosure, the display layer 1 can be supported by the connection between the support layer 3 and the display layer 1, which is conducive to improving the overall impact resistance of the display panel 100, and since the support layer 3 can include a piezoelectric film layer, the vibration of the display panel 100 can be realized through the piezoelectric film layer, achieving the purpose of vibration sound and tactile feedback.

[0041] Currently, in order to buffer the impact force from the back, the display panel configured by the electronic device usually sets a buffer foam on the back away from the display side of the display panel, but the buffer foam has weak impact resistance, which is easy to deform when subjected to external impact, thereby causing the display panel to deform. Generally speaking, when the back impact force is greater than 10N, the impact force acts on the display layer of the display panel through the buffer foam, which is easy to cause the front of the display panel to appear a pit; and when the back impact force is greater than 300N, the impact force acts on the display layer of the display panel through the buffer foam, which is easy to cause the display panel to appear a bad point, and the display effect is poor. Therefore, in an embodiment, as shown in Figure 1 、 Figure 2 The support layer 3 can only include a piezoelectric film layer, that is, the piezoelectric film layer can be directly or indirectly connected with the display layer 2, and according to the pressure-deformation variable curve of the buffer foam and the piezoelectric film layer in Figure 3 , it can be known that the hardness of the piezoelectric film layer is higher, and under the action of the same pressure, the deformation variable of the piezoelectric film layer is smaller than that of the buffer foam. Therefore, compared with the technical solution of supporting by the buffer foam in the related art, the display layer 1 is supported by the piezoelectric film layer in the present disclosure, which can realize the vibration sound and haptic feedback functions of the display panel 100, improve the impact resistance of the display panel 100, reduce the risk of damage of the display panel 100 under the action of external impact, and at the same time, it is beneficial to increase the area of the piezoelectric film layer, thereby increasing the area of the region of the display panel 100 that can perform haptic feedback.

[0042] In another embodiment, as shown in Figure 4 、 Figure 5 The support layer 3 can include a piezoelectric film layer 31 and a buffer layer 32, and at least one of the buffer layer 32 and the piezoelectric film layer 31 can be connected with the display layer 1. The buffer layer 32 can include foam, so that the support effect can be realized by the buffer layer 32 and the piezoelectric film layer 31 together, while realizing the vibration sound and haptic feedback functions of the display panel 100, reducing the use of the piezoelectric film layer 31, and being beneficial to reduce the cost. Wherein, the buffer layer 32 and the piezoelectric film layer 31 can be arranged adjacent as shown in Figure 4 , or the buffer layer 32 can surround the piezoelectric film layer 31 as shown in Figure 5 , or in other embodiments, the piezoelectric film layer 31 can surround the buffer layer 32, or the buffer layer 32 can surround part of the piezoelectric film layer 31, or the piezoelectric film layer 31 can surround part of the buffer layer 32, and the present disclosure does not limit this.

[0043] In an embodiment, as shown in Figure 6 、 Figure 7As shown, the piezoelectric film layer 31 and the buffer layer 32 of the support layer 3 are both connected with the display layer 1, that is, the buffer layer 32 can be arranged side by side with the piezoelectric film layer 31, and the thicknesses of the two can be substantially the same, so that both can be connected with the display layer 1 and the electrostatic protection layer 4. Figure 7 Compared with the technical solution of Figure 6 , the area of the piezoelectric film layer 31 is larger, so that the area of the tactile feedback on the display panel 100 is larger, and the sound pressure level when the display panel 100 emits sound is higher.

[0044] In another embodiment, as shown in Figure 8 , the buffer layer 32 can be arranged around the piezoelectric film layer 31, and the buffer layer 32 is connected with the display layer 1 and the electrostatic protection layer 4 respectively, while the piezoelectric film layer 31 is connected with the electrostatic protection layer 4, and a distance can be set between the piezoelectric film layer 31 and the display layer 1. When the piezoelectric film layer 31 vibrates, it can be conducted to the electrostatic protection layer 4 and the buffer layer 32, and then to the display layer 1 and the protection layer 2 through the buffer layer 32, and because the structure of the electrostatic protection layer 4 driving the display layer 1 and the protection layer 2 is lighter, the pushing force to push the electrostatic protection layer 4 to vibrate is smaller than the pushing force to push the display layer 1 and the protection layer 2. Further, when the piezoelectric film layer 31 and the electrostatic protection layer 4 are connected at each position of the area surrounded by the buffer layer 32, an acoustic cavity can be formed around by the piezoelectric film layer 31, the buffer layer 32 and the display layer 1, so as to improve the sound emitting effect of the display panel 100. Alternatively, in other embodiments, if part of the positions of the area surrounded by the buffer layer 32 on the electrostatic protection layer 4 are not attached with the piezoelectric film layer 31, the acoustic cavity can also be surrounded by the piezoelectric film layer 31, the buffer layer 32, the display layer 1 and the electrostatic protection layer 4.

[0045] In yet another embodiment, as shown in Figure 9 , the buffer layer 32 can be arranged around the piezoelectric film layer 31, and the buffer layer 32 is connected with the display layer 1 and the electrostatic protection layer 4 respectively, while the piezoelectric film layer 31 is connected with the display layer 1, and a distance can be set between the piezoelectric film layer 31 and the electrostatic protection layer 4. In this way, when the piezoelectric film layer 31 vibrates, because the piezoelectric film layer 31 is directly connected with the display layer 1, the vibration can be directly transmitted to the display layer 1, which can shorten the transmission process of the vibration and reduce the loss compared with the technical solution of Figure 8 . Further, when the piezoelectric film layer 31 and the electrostatic protection layer 4 are connected at each position of the area surrounded by the buffer layer 32, an acoustic cavity can be formed around by the piezoelectric film layer 31, the buffer layer 32 and the electrostatic protection layer 4, so as to improve the sound emitting effect of the display panel 100. Alternatively, in other embodiments, if part of the positions of the area surrounded by the buffer layer 32 on the display layer 1 are not attached with the piezoelectric film layer 31, the acoustic cavity can also be surrounded by the piezoelectric film layer 31, the buffer layer 32, the display layer 1 and the electrostatic protection layer 4.

[0046] In the above embodiments, a first heat dissipation layer (not shown) may also be provided in the display panel 100. The first heat dissipation layer may be provided between the support layer 3 and the electrostatic protection layer 4. Specifically, it may be provided between the buffer layer 32 and the electrostatic protection layer 4, or between the piezoelectric film layer 31 and the electrostatic protection layer 4, or both between the buffer layer 32 and the electrostatic protection layer 4 and between the piezoelectric film layer 31 and the electrostatic protection layer 4. This disclosure does not limit this.

[0047] Similarly, a second heat dissipation layer (not shown) can be disposed between the support layer 3 and the display layer 1. This second heat dissipation layer can be disposed between the buffer layer 32 and the display layer 1, or between the piezoelectric thin film layer 31 and the display layer 1, or both the buffer layer 32 and the display layer 1 and the piezoelectric thin film layer 31 and the display layer 1 can be disposed with a second heat dissipation layer. The specific design can be customized as needed, and this disclosure does not impose any limitations on it. The first and second heat dissipation layers may include graphite layers.

[0048] Based on the display panel 100 described in the above embodiments, this disclosure also provides a... Figure 10 The illustrated electronic device 200 can be configured with the display panel 100 described in any of the above embodiments, through which the electronic device 200 can realize sound and haptic feedback functions. The electronic device 200 may include mobile terminals, tablet terminals, and smart home devices.

[0049] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0050] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A display panel, characterized in that, It includes a display layer, a protective layer, and a support layer. The display layer is disposed between the protective layer and the support layer, and the support layer is connected to the display layer. The support layer includes a piezoelectric thin film layer, which drives the display layer and the protective layer to vibrate when deformed. The support layer further includes a buffer layer. Both the piezoelectric thin film layer and the buffer layer are connected to the side of the display layer away from the protective layer. The buffer layer and the piezoelectric thin film layer are laid flat on the side of the display layer away from the protective layer. The thickness of the buffer layer is greater than or equal to the thickness of the piezoelectric thin film layer.

2. The display panel according to claim 1, characterized in that, The buffer layer is disposed adjacent to the piezoelectric thin film layer, or the buffer layer is disposed around at least a portion of the piezoelectric thin film layer, or the piezoelectric thin film layer is disposed around at least a portion of the buffer layer.

3. The display panel according to claim 1, characterized in that, The display panel also includes: An electrostatic protection layer is provided, which is connected to the support layer and is disposed between the electrostatic protection layer and the display layer.

4. The display panel according to claim 3, characterized in that, The buffer layer is disposed around the piezoelectric thin film layer, and the buffer layer is respectively connected to the display layer and the electrostatic protection layer. The piezoelectric thin film layer is connected to the display layer and is spaced apart from the electrostatic protection layer by a set distance. The piezoelectric thin film layer, the electrostatic protection layer, and the buffer layer form a sound cavity, or the piezoelectric thin film layer, the electrostatic protection layer, the display layer, and the buffer layer form a sound cavity.

5. The display panel according to claim 3, characterized in that, The buffer layer is disposed around the piezoelectric thin film layer, and the buffer layer is respectively connected to the display layer and the electrostatic protection layer. The piezoelectric thin film layer is connected to the electrostatic protection layer and is spaced apart from the display layer by a set distance. The piezoelectric thin film layer, the display layer, and the buffer layer form a sound cavity, or the piezoelectric thin film layer, the electrostatic protection layer, the display layer, and the buffer layer form a sound cavity.

6. The display panel according to claim 3, characterized in that, The electrostatic protective layer includes vent holes.

7. The display panel according to claim 3, characterized in that, Also includes: A first heat dissipation layer is disposed between the support layer and the electrostatic protection layer.

8. The display panel according to claim 1, characterized in that, Also includes: The second heat dissipation layer is disposed between the support layer and the display layer.

9. An electronic device, characterized in that, Includes the display panel as described in any one of claims 1-8.

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