Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate, a light-emitting device layer, a packaging layer and a sound production assembly. The light-emitting device layer is arranged on one side of the substrate in the first direction, and the light-emitting device layer comprises a plurality of light-emitting functional layers which are arranged at intervals; the packaging layer comprises a packaging part and a cavity structure, the orthographic projection of the packaging part on the substrate covers the orthographic projection of the light-emitting functional layer on the substrate, and the packaging part surrounds the peripheral side of the cavity structure; the sound production assembly comprises a first electrode part, a second electrode part and a vibrating membrane layer, the vibrating membrane layer is arranged on the side, opposite to the light-emitting device layer, of the packaging layer, the first electrode part and the second electrode part are oppositely arranged in the first direction, and at least part of a cavity structure is arranged between the first electrode part and the second electrode part; the second electrode part is arranged on one side of the vibrating membrane layer in the first direction, and the vibrating membrane layer is configured to generate vibration and sound under the action of electrostatic force of the first electrode part and the second electrode part.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Display panels are widely used in electronic devices such as mobile phones, tablets, monitors, and televisions due to their advantages of flatness, low power consumption, no electromagnetic radiation, high resolution, high contrast, easy integration, and light weight and portability. In related technologies, a sound component is integrated in the display panel to realize the sound function of the display panel.

[0003] However, after the sound-generating component is integrated into the display panel, the sound-generating effect is poor. Summary of the invention

[0004] The present application provides a display panel and a display device, which are beneficial to improving the sound effect of the display panel.

[0005] In the first aspect, the display panel provided according to the embodiment of the present application includes a substrate, a light-emitting device layer, a packaging layer and a sound-emitting component; the light-emitting device layer is arranged on one side of the substrate along the first direction, and the light-emitting device layer includes a plurality of light-emitting functional layers arranged at intervals; the packaging layer is arranged on the side of the light-emitting device layer that is away from the substrate, and the packaging layer includes a packaging portion and a cavity structure, the orthographic projection of the packaging portion on the substrate covers the orthographic projection of the light-emitting functional layer on the substrate, and the packaging portion is arranged around the cavity structure; the sound-emitting component includes a first electrode portion, a second electrode portion and a vibration membrane layer, the vibration membrane layer is arranged on the side of the packaging layer that is away from the light-emitting device layer, the first electrode portion and the second electrode portion are arranged opposite to each other along the first direction, at least a portion of the cavity structure is provided between the first electrode portion and the second electrode portion, the second electrode portion is arranged on one side of the vibration membrane layer in the first direction, and the vibration membrane layer is configured to generate vibration and sound under the action of the electrostatic force of the first electrode portion and the second electrode portion.

[0006] In some embodiments, the light-emitting device layer also includes a first driving electrode layer and a second driving electrode layer, the first driving electrode layer includes a plurality of first driving electrode portions arranged at intervals, the second driving electrode layer includes a plurality of second driving electrode portions arranged at intervals, the first driving electrode portions and the second driving electrode portions are respectively arranged on both sides of the light-emitting functional layer along the first direction; the first electrode portions and the first driving electrode portions are in the same layer and are arranged at intervals.

[0007] In some embodiments, the first driving electrode portion is located on a side of the light-emitting functional layer facing the substrate, and an orthographic projection of the first electrode portion on the substrate is staggered from an orthographic projection of the second driving electrode portion on the substrate.

[0008] In some embodiments, the second driving electrode portion is disposed between the packaging portion and the light-emitting functional layer.

[0009] In some embodiments, an orthographic projection of the second driving electrode portion on the substrate is located within an orthographic projection of the packaging portion on the substrate.

[0010] In some embodiments, the first electrode portion is located between the cavity structure and the substrate.

[0011] In some embodiments, the second electrode portion is disposed on a side of the vibration membrane layer facing the cavity structure and is located inside the cavity structure; alternatively, the second electrode portion is disposed on a side of the vibration membrane layer facing away from the cavity structure.

[0012] In some embodiments, the display panel further includes a first signal line, which is disposed on a side of the first driving electrode layer facing the substrate and is electrically connected to the first electrode portion.

[0013] In some embodiments, at least part of the first signal line is disposed in a substrate, the substrate includes a first conductive portion, and at least part of the first signal line and the first conductive portion are disposed in the same layer and spaced apart.

[0014] In some embodiments, the first driving electrode portion is located on a side of the light-emitting functional layer facing the encapsulation layer.

[0015] In some embodiments, an orthographic projection of the first driving electrode portion on the substrate is located within an orthographic projection of the packaging portion on the substrate.

[0016] In some embodiments, the first electrode portion is located in the cavity structure.

[0017] In some embodiments, the second electrode portion is disposed on a side of the vibration membrane layer facing the substrate and located in the cavity structure, or the second electrode portion is disposed on a side of the cavity structure and the vibration membrane layer facing away from the substrate.

[0018] In some embodiments, the display panel further includes a first signal line electrically connected to the first electrode portion; at least part of the first signal line is disposed on the side of the second driving electrode layer facing the substrate; or at least part of the first signal line is in the same layer as the second driving electrode layer and is spaced apart.

[0019] In some embodiments, the material of the vibration membrane layer includes an organic material.

[0020] In some embodiments, the display panel also includes a touch layer, which is arranged on the side of the vibration membrane layer facing away from the packaging layer. The touch layer includes a second conductive portion, and the second electrode portion is arranged on the side of the vibration membrane layer facing away from the packaging layer. The second conductive portion and the second electrode portion are in the same layer and are arranged at intervals.

[0021] In some embodiments, the second conductive portion includes a touch electrode portion, and the touch electrode portion and the second electrode portion are in the same layer and are spaced apart.

[0022] In some embodiments, the touch layer further includes a touch sensing electrode disposed along the first direction opposite to the touch electrode portion.

[0023] In some embodiments, the display panel further includes an insulating layer disposed between the touch sensing electrode and the touch electrode portion.

[0024] In some embodiments, the display panel further includes a protection layer disposed on a side of the touch sensing electrode facing away from the substrate.

[0025] In some embodiments, the second conductive portion includes a bridging electrode portion, and the touch layer also includes multiple touch electrode portions arranged on the side of the second conductive portion facing away from the packaging layer, the bridging electrode portion electrically connects two touch electrode portions adjacent along the second direction, the first direction intersects with the second direction, and the second electrode portion and the bridging electrode are in the same layer and are arranged at intervals.

[0026] In some embodiments, the display panel further includes an insulating layer disposed between the bridging electrode portion and the touch electrode portion, and the bridging electrode portion is connected to the touch electrode via hole.

[0027] In some embodiments, the display panel further includes a protection layer disposed on a side of the touch electrode portion facing away from the substrate.

[0028] In some embodiments, the display panel further includes a second signal line, the second signal line is disposed on a side of the vibration membrane layer facing away from the substrate, and the second signal line is electrically connected to the second electrode portion.

[0029] In a second aspect, an embodiment of the present application provides a display device, and the display device includes a display panel provided by any of the above embodiments.

[0030] The display device and display device provided by the embodiment of the present application, by setting the encapsulation layer with a cavity structure, at least part of the cavity structure is used to form a sound component, which is conducive to reducing the thickness of the display panel. Since the vibration membrane layer of the sound component is arranged on the side of the encapsulation layer facing away from the light-emitting device layer, the sound emitted by the sound component does not need to pass through the light-emitting device layer, which is conducive to improving the sound effect of the display panel. Since the sound component does not occupy the space where the light-emitting functional layer is located, it will not affect the pixel arrangement density of the display panel. Therefore, the display panel provided by the embodiment of the present application is conducive to improving the sound effect of the display panel, and without reducing the pixel arrangement density of the display panel, it is conducive to reducing the thickness of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The features, advantages and technical effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the accompanying drawings, the same components are marked with the same reference numerals. The accompanying drawings are not drawn to scale.

[0032] Figure 1A front view of a display panel provided in an embodiment of the present application;

[0033] Figure 2 for Figure 1 A schematic diagram of a cross-sectional structure along AA;

[0034] Figure 3 for Figure 1 Another schematic diagram of the cross-sectional structure along AA;

[0035] Figure 4 for Figure 1 Another schematic cross-sectional view along AA;

[0036] Figure 5 for Figure 1 Another schematic cross-sectional view along AA;

[0037] Figure 6 for Figure 1 Another schematic cross-sectional view along AA;

[0038] Figure 7 for Figure 1 Another schematic cross-sectional view along AA;

[0039] Figure 8 for Figure 1 Another schematic cross-sectional view along AA;

[0040] Fig. 9 for Figure 1 Another schematic cross-sectional view along AA;

[0041] Fig.10 This is an annotated diagram of the display device provided in an embodiment of the present application.

[0042] In the drawings, the figures are not necessarily drawn to scale.

[0043] Description of reference numerals:

[0044] 10. Display device;

[0045] 100. Display panel;

[0046] 110, substrate; 111, underlay; 112, pixel driving circuit;

[0047] 120, light emitting device layer; 121, light emitting function layer; 122, pixel definition layer; 122a, pixel opening; 123, first driving electrode layer; 1231, first driving electrode portion; 124, second driving electrode layer; 1241, second driving electrode portion;

[0048] 130, packaging layer; 131, packaging part; 132, cavity structure;

[0049] 140, sound-generating component; 141, first electrode portion; 142, second electrode portion; 143, vibration membrane layer;

[0050] 151, first signal line;

[0051] 160, touch layer; 161, second conductive portion; 162, touch electrode portion; 163, bridge electrode portion; 164, touch sensing electrode; 165, protection layer; 166, insulation layer;

[0052] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0053] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0054] In addition, for the sake of understanding and ease of description, the size and thickness of each configuration shown in the figures are arbitrarily shown, but the present application is not limited thereto. In the figures, for the sake of clarity, the thickness of layers, films, panels, regions, etc. are exaggerated. In the figures, for better understanding and ease of description, the thickness of some layers and regions is exaggerated.

[0055] It is understood that when an element such as a layer, film, region, or substrate is described as being "on" another element, the element may be directly on the other element, or intervening elements may also be present. In contrast, when an element is described as being "directly on" another element, there are no intervening elements. Furthermore, throughout the specification, the term "on" a target element means being positioned above or below the target element, and does not necessarily mean being positioned "at the upper side" based on the direction of gravity.

[0056] In addition, unless explicitly described to the contrary, the word “comprise” will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.

[0057] In the related art, in order to realize the sound-generating function of the display panel, the sound-generating component is usually attached to the bottom of the display panel in an external manner. This will greatly increase the overall thickness of the display panel, and the sound-generating component needs to penetrate the substrate, light-emitting device layer and other structures of the display panel during the sound-generating process, which seriously affects the sound effect of the display panel.

[0058] In view of this, embodiments of the present application provide a display panel and a display device. Embodiments of the display panel and the display device will be described below in conjunction with the accompanying drawings.

[0059] like Figure 1 and Figure 2 As shown, the display panel 100 provided according to the embodiment of the present application includes a substrate 110, a light-emitting device layer 120, an encapsulation layer 130 and a sound-emitting component 140. The light-emitting device layer 120 is arranged on one side of the substrate 110 along the first direction X, and the light-emitting device layer 120 includes a plurality of light-emitting functional layers 121 arranged at intervals. The encapsulation layer 130 is arranged on the side of the light-emitting device layer 120 facing away from the substrate 110, and the encapsulation layer 130 includes an encapsulation portion 131 and a cavity structure 132, the orthographic projection of the encapsulation portion 131 on the substrate 110 covers the orthographic projection of the light-emitting functional layer 121 on the substrate 110, and the encapsulation portion 131 is arranged around the periphery of the cavity structure 132. The sound-emitting component 140 includes a first electrode portion 141, a second electrode portion 142 and a vibration membrane layer 143. The vibration membrane layer 143 is arranged on the side of the packaging layer 130 facing away from the light-emitting device layer 120. The first electrode portion 141 and the second electrode portion 142 are arranged opposite to each other along the first direction X. There is at least a portion of the cavity structure 132 between the first electrode portion 141 and the second electrode portion 142. The second electrode portion 142 is arranged on one side of the vibration membrane layer 143 in the first direction X. The vibration membrane layer 143 is configured to generate vibration and produce sound under the action of the electrostatic force of the first electrode portion 141 and the second electrode portion 142.

[0060] The substrate 110 may include a substrate 111 and a drive array layer located on the substrate 111. The substrate 111 may be made of materials such as glass and polyimide (PI). The drive array layer may include a plurality of pixel drive circuits 112 arranged in an array, each pixel drive circuit 112 being electrically connected to a corresponding light-emitting functional layer 121 to drive the corresponding light-emitting functional layer 121 to emit light. Therefore, the display panel 100 may be an active matrix organic light-emitting diode (AMOLED) display panel 100.

[0061] The light emitting device layer 120 is disposed on one side of the substrate 110 along the first direction X, and the first direction X may be the thickness direction of the display panel 100, or the first direction X may be a direction perpendicular to the plane where the substrate 110 is located. The light emitting device layer 120 may be located on the side of the drive array layer that is away from the substrate 111 along the first direction X, so as to facilitate electrical connection between the pixel driving circuit 112 in the drive array layer and the light emitting function layer 121.

[0062] The light-emitting function layer 121 of the light-emitting device layer 120 can be used to emit light of different colors, respectively, to achieve a colorful display of the display panel 100. The light-emitting device layer 120 can also include a pixel definition layer 122, the pixel definition layer 122 has a pixel opening 122a, and the light-emitting function layer 121 is arranged in the pixel opening 122a. The pixel definition layer 122 limits the light-emitting function layer 121, and facilitates mutual insulation of the light-emitting function layer 121.

[0063] Optionally, the light-emitting device layer 120 may further include a light-emitting common layer (not shown) disposed on at least one side of the light-emitting functional layer 121 in the first direction X. Exemplarily, the number of the light-emitting common layers may be multiple layers, for example, the light-emitting common layer may include a hole injection layer (HIL), a hole transport layer (HTL), an electron injection layer (EIL) and an electron transport layer (ETL).

[0064] Optionally, the light-emitting common layer may be in a relatively complete surface shape. For example, the orthographic projections of each light-emitting functional layer 121 on the substrate 110 may all be located within the orthographic projection of any light-emitting common layer on the substrate 110 .

[0065] The encapsulation layer 130 is disposed on the side of the light emitting device layer 120 facing away from the substrate 110, and the encapsulation layer 130 can protect the light emitting device layer 120. The encapsulation layer 130 includes an encapsulation portion 131 and a cavity structure 132. During the preparation of the encapsulation layer 130, the cavity structure 132 and the encapsulation portion 131 can be formed by a deposition process and then by a material removal process such as etching. Alternatively, the encapsulation portion 131 and the cavity structure 132 can be directly printed by a printing process without an etching process.

[0066] The orthographic projection of the encapsulation part 131 on the substrate 110 covers the orthographic projection of the light-emitting functional layer 121 on the substrate 110, so as to provide a certain protection for the light-emitting functional layer 121 through the encapsulation part 131. Since the encapsulation part 131 is arranged around the periphery of the cavity structure 132, the orthographic projection of the cavity structure 132 on the substrate 110 does not overlap with the orthographic projection of the light-emitting functional layer 121 on the substrate 110, and optionally, the two can be arranged at intervals or adjacent to each other.

[0067] Optionally, the cavity structure 132 may penetrate the encapsulation layer 130 along the first direction X, or the cavity structure 132 does not penetrate the encapsulation layer 130 along the first direction X.

[0068] The sound-emitting component 140 may include a plurality of first electrode portions 141 and a plurality of second electrode portions 142. The plurality of first electrode portions 141 may be arranged in an array, and the plurality of second electrode portions 142 may also be arranged in an array, so that the first electrode portions 141 and the second electrode portions 142 are arranged relative to each other along the first direction X.

[0069] There is at least a portion of the cavity structure 132 between the first electrode portion 141 and the second electrode portion 142 of the sound-emitting component 140. Optionally, at least one of the first electrode portion 141 and the second electrode portion 142 that are relatively arranged along the first direction X is arranged in the cavity structure 132, and there is a portion of the cavity structure 132 along the first direction X between the two. Alternatively, neither the first electrode portion 141 nor the second electrode portion 142 is located in the cavity structure 132, and the entire cavity structure 132 is between the first electrode portion 141 and the second electrode portion 142 that are relatively arranged along the first direction X.

[0070] Optionally, the first electrode portion 141 may be disposed in the light emitting device layer 120, or the first electrode portion 141 may be disposed on the side of the light emitting device layer 120 facing away from the substrate 110. Of course, the first electrode portion 141 may also be disposed in the substrate 110. Since the first electrode portion 141 can generate an electrostatic force on the second electrode portion 142, there may be no related metal layer between the first electrode portion 141 and the second electrode portion 142 to reduce the risk of electrostatic shielding between the first electrode portion 141 and the second electrode portion 142.

[0071] The vibration membrane layer 143 of the sound generating component 140 is disposed on the packaging layer 130 . During the manufacturing process of the display panel 100 , after the packaging layer 130 is manufactured, the vibration membrane layer 143 can be attached to the packaging layer 130 in its entirety.

[0072] The second electrode portion 142 is disposed on one side of the vibration membrane layer 143 in the first direction X. In some embodiments, as shown in FIG. Figure 2As shown, the second electrode portion 142 can be arranged on the side of the vibration membrane layer 143 facing the cavity structure 132 and located in the cavity structure 132. For example, during the preparation of the display panel 100, the second electrode portion 142 can be first attached to the vibration membrane layer 143, and then the side of the vibration membrane layer 143 on which the second electrode portion 142 is attached is attached to the encapsulation layer 130, so that the second electrode portion 142 can be located in the cavity structure 132, thereby realizing the preparation of the second electrode portion 142, the vibration membrane layer 143 and the encapsulation layer 130 in the display panel 100.

[0073] Or, in other embodiments, Figure 3 As shown, the second electrode portion 142 can be arranged on the side of the vibration membrane layer 143 facing away from the cavity structure 132. For example, during the preparation of the display panel 100, the vibration membrane layer 143 can be first attached to the packaging layer 130, and then the second electrode portion 142 can be formed on the vibration membrane layer 143, thereby realizing the preparation of the second electrode portion 142, the vibration membrane layer 143 and the packaging layer 130 in the display panel 100.

[0074] The first electrode portion 141 and the second electrode portion 142 can be electrically connected to the control device of the display panel 100 respectively. When the sound-emitting component 140 is working, the first electrode portion 141 and the second electrode portion 142 respectively receive electrical signals, and a voltage difference is generated between the two. In this way, an electrostatic force is generated between the first electrode portion 141 and the second electrode portion 142. Since the second electrode portion 142 is arranged on the vibration membrane layer 143, the vibration membrane layer 143 vibrates under the electrostatic force of the first electrode portion 141 on the second electrode portion 142, and produces ultrasonic waves. The ultrasonic self-regulation principle is used to form sound, and the vibration direction of the vibration membrane layer 143 is mainly along the first direction X. The sound emitted by the display panel 100 is also along the first direction X, that is, the directional sound emission function of the display panel 100 is realized.

[0075] Optionally, the material of the vibration membrane layer 143 may include an organic material, so that the vibration membrane layer 143 can easily vibrate under the electrostatic force of the first electrode portion 141 on the second electrode portion 142 .

[0076] It can be understood that since the cavity structure 132 is provided in the encapsulation layer 130 and does not occupy the relevant structure in the light-emitting device layer 120, it will not affect the arrangement density of the light-emitting function layer 121 in the light-emitting device layer 120, that is, the existence of the sound component 140 will not reduce the pixel arrangement density of the display panel 100. And the sound emitted by the sound component 140 does not need to pass through the light-emitting device layer 120, which is conducive to improving the sound effect.

[0077] Furthermore, since the cavity structure 132 is provided by utilizing the encapsulation layer 130, and the space between the first electrode portion 141 and the second electrode portion 142 is formed by utilizing at least a portion of the cavity structure 132, the sound component 140 can be better integrated into the display panel 100, without the need to provide an independent related sound device outside the display panel 100, and without the need to additionally provide a related film layer in the display panel 100, which is beneficial to reducing the thickness of the display panel 100 and saving the manufacturing cost.

[0078] The display panel 100 provided in the embodiment of the present application is provided with a cavity structure 132 in the encapsulation layer 130, so that at least part of the cavity structure 132 is used to form the sound component 140, which is conducive to reducing the thickness of the display panel 100. In addition, since the vibration membrane layer 143 of the sound component 140 is arranged on the side of the encapsulation layer 130 facing away from the light-emitting device layer 120, the sound emitted by the sound component 140 does not need to pass through the light-emitting device layer 120, which is conducive to improving the sound effect of the display panel 100. Since the sound component 140 does not occupy the space where the light-emitting function layer 121 is located, it will not affect the pixel arrangement density of the display panel 100. Therefore, the display panel 100 provided in the embodiment of the present application is conducive to improving the sound effect of the display panel 100, and is conducive to reducing the thickness of the display panel 100 without reducing the pixel arrangement density of the display panel 100.

[0079] like Figure 2 and Figure 3 As shown, in some embodiments, the light emitting device layer 120 further includes a first driving electrode layer 123 and a second driving electrode layer 124, the first driving electrode layer 123 includes a plurality of first driving electrode portions 1231 disposed at intervals, the second driving electrode layer 124 includes a plurality of second driving electrode portions 1241 disposed at intervals, and the first driving electrode portions 1231 and the second driving electrode portions 1241 are respectively disposed on both sides of the light emitting functional layer 121 along the first direction X. The first electrode portion 141 is in the same layer as the first driving electrode portion 1231 and is disposed at intervals.

[0080] Optionally, the first driving electrode portion 1231 and the second driving electrode portion 1241 are respectively arranged on both sides of the light-emitting functional layer 121 along the first direction X, which may mean that the orthographic projection of the first driving electrode portion 1231 on the substrate 110, the orthographic projection of the light-emitting functional layer 121 on the substrate 110 and the orthographic projection of the second driving electrode portion 1241 on the substrate 110 may overlap in pairs.

[0081] Optionally, according to the arrangement of the light-emitting functional layer 121, the first driving electrode portion 1231 and the second driving electrode portion 1241 can be arranged in an array, and the first driving electrode portion 1231 and the second driving electrode portion 1241 are respectively arranged on both sides of the light-emitting functional layer 121 along the first direction X, so as to realize that the light-emitting functional layer 121 emits light normally under the action of the voltage difference between the first driving electrode portion 1231 and the second driving electrode portion 1241, and the orthographic projections of the first driving electrode portion 1231 and the second driving electrode portion 1241 on the substrate 110 respectively cover the orthographic projections of the corresponding light-emitting functional layer 121 on the substrate 110.

[0082] Optionally, the first driving electrode portion 1231 may be arranged on the side of the light-emitting functional layer 121 close to the substrate 110, and the second driving electrode portion 1241 may be arranged on the side of the light-emitting functional layer 121 close to the encapsulation layer 130. If the first electrode portion 141 and the first driving electrode portion 1231 are arranged on the same layer, the first electrode portion 141 may be arranged in the first driving electrode layer 123 on the side of the light-emitting functional layer 121 close to the substrate 110. Alternatively, the first driving electrode portion 1231 may be arranged on the side of the light-emitting functional layer 121 close to the encapsulation layer 130, and the second driving electrode portion 1241 may be arranged on the side of the light-emitting functional layer 121 close to the substrate 110. If the first electrode portion 141 and the first driving electrode portion 1231 are arranged on the same layer, the first electrode portion 141 may be arranged in the first driving electrode layer 123 on the side of the light-emitting functional layer 121 close to the encapsulation layer 130.

[0083] Since the first electrode portion 141 and the first driving electrode portion 1231 are arranged in the same layer, during the preparation of the first electrode portion 141 and the second electrode portion 142, the relevant conductive film layer can be formed in an entire layer, and then patterning is performed to form the first electrode portion 141 and the first driving electrode portion 1231. Since the first electrode portion 141 and the first driving electrode portion 1231 are arranged in the same layer, the two can be prepared together, and there is no need to provide an additional film layer for the first electrode portion 141, which is conducive to simplifying the preparation process of the display panel 100, saving preparation costs, and reducing the thickness of the display panel 100.

[0084] like Figure 2 and Figure 3 As shown, in some embodiments, the first driving electrode portion 1231 may be located on the side of the light-emitting functional layer 121 facing the substrate 110 , and the orthographic projection of the first electrode portion 141 on the substrate 110 is staggered with the orthographic projection of the second driving electrode portion 1241 on the substrate 110 .

[0085] The first driving electrode portion 1231 is located on the side of the light-emitting functional layer 121 facing the substrate 110 , and the first driving electrode portion 1231 can serve as the anode of the light-emitting functional layer 121 and be electrically connected to the pixel driving circuit 112 to provide an electrical signal to the first driving electrode portion 1231 through the pixel driving circuit 112 .

[0086] Since the first driving electrode portion 1231 and the second driving electrode portion 1241 are located on the side of the light-emitting functional layer 121 facing the substrate 110, the second driving electrode portion 1241 may be located on the side of the light-emitting functional layer 121 facing the encapsulation layer 130. For example, the second driving electrode portion 1241 may be located between the encapsulation layer 130 and the light-emitting functional layer 121, and the second driving electrode portion 1241 may serve as the cathode of the light-emitting functional layer 121.

[0087] Furthermore, since the first driving electrode portion 1231 and the second driving electrode portion 1241 are located on the side of the light-emitting functional layer 121 facing the substrate 110, the first electrode portion 141 can be located between the cavity structure 132 and the substrate 110. For example, the first electrode portion 141 can be located between the pixel definition layer 122 and the substrate 110, which can facilitate the realization of the directional sound emission function of the display panel 100.

[0088] The orthographic projection of the first electrode portion 141 on the substrate 110 is staggered with the orthographic projection of the second driving electrode portion 1241 on the substrate 110, and the orthographic projection of the first electrode portion 141 on the substrate 110 can be arranged at a distance from or adjacent to the orthographic projection of the second driving electrode portion 1241 on the substrate 110. In this way, when the first electrode portion 141 and the second electrode portion 142 are powered on, the risk of the second driving electrode portion 1241 causing a certain electrostatic shielding on the first electrode portion 141 and the second electrode portion 142 and affecting the normal sound of the sound component 140 is reduced.

[0089] Therefore, the first electrode portion 141 and the first driving electrode portion 1231 are arranged on the side of the light-emitting functional layer 121 facing the substrate 110, and the orthographic projection of the first electrode portion 141 on the substrate 110 is staggered with the orthographic projection of the second driving electrode portion 1241 on the substrate 110. This is beneficial for reducing the thickness of the display panel 100 and also for reducing the risk of the second driving electrode portion 1241 causing certain electrostatic shielding on the first electrode portion 141 and the second electrode portion 142, thereby affecting the normal sound of the display panel 100.

[0090] Optionally, the orthographic projection of the second driving electrode portion 1241 on the substrate 110 is located within the orthographic projection of the encapsulated portion 131 on the substrate 110, so that the encapsulation portion 131 can better limit the intrusion of water vapor into the second driving electrode portion 1241, and can reduce the risk of the second driving electrode portion 1241 causing a certain degree of electrostatic shielding to the first electrode portion 141 and the second electrode portion 142, thereby affecting the normal sound of the sound-emitting component 140.

[0091] In these embodiments, when the first driving electrode portion 1231 is located on the side of the light emitting functional layer 121 facing the substrate 110, Figure 2 As shown, the second electrode portion 142 can be arranged on the side of the vibration membrane layer 143 facing the cavity structure 132 and located in the cavity structure 132, which is beneficial to reducing the distance between the first electrode portion 141 and the second electrode portion 142, and is beneficial to increasing the capacitance between the first electrode portion 141 and the second electrode portion 142, thereby facilitating improving the sound effect of the sound component 140, or, as shown Figure 3 As shown, the second electrode portion 142 may be disposed on a side of the vibration membrane layer 143 facing away from the cavity structure 132 , which can effectively reduce the difficulty of manufacturing the display panel 100 .

[0092] In some embodiments, the display panel 100 further includes a first signal line 151, and the first signal line 151 can be electrically connected to the first electrode portion 141. Exemplarily, the first signal line 151 can be electrically connected to the control device of the display panel 100, so that the first electrode portion 141 can be electrically connected to the control device of the display panel 100 through the first signal line 151, and the control device can control related components to convert the sound signal into an electrical signal, and transmit the electrical signal to the first electrode portion 141 through the first signal line 151 to change the voltage of the first electrode portion 141, so that the first electrode portion 141 and the second electrode portion 142 can have a corresponding voltage difference and generate an electrostatic force, thereby facilitating the display panel 100 to make a sound.

[0093] In some embodiments, when the first driving electrode portion 1231 is located on the side of the light-emitting functional layer 121 facing the substrate 110 , the first signal line 151 may be disposed on the side of the first driving electrode layer 123 facing the substrate 110 (not shown in the figure) and electrically connected to the first electrode portion 141 .

[0094] The first signal line 151 is disposed on the side of the first driving electrode layer 123 facing the substrate 110, which may mean that at least part of the first signal line 151 may be disposed in the substrate 110, or at least part of the first signal line 151 may be disposed between the substrate 110 and the light-emitting device layer 120. The first signal line 151 may be electrically connected to the first electrode portion 141, and used to provide a voltage signal to the first electrode portion 141. Optionally, one first signal line 151 may be electrically connected to one first electrode portion 141, or one signal line may be electrically connected to multiple first electrode portions 141, and provide voltage signals to multiple first electrode portions 141.

[0095] In some embodiments, at least part of the first signal line 151 may be disposed in the substrate 110 , the substrate 110 includes a first conductive portion, and at least part of the first signal line 151 is disposed in the same layer as the first conductive portion and spaced apart (not shown in the figure).

[0096] The substrate 110 includes a first conductive portion, which may be any structure in the pixel driving circuit 112. At least part of the first signal line 151 is disposed in the same layer as the first conductive portion, so that at least part of the first signal line 151 does not need to occupy an additional film layer structure of the display panel 100, which is beneficial to reducing the thickness of the display panel 100. The first signal line 151 is spaced apart from the first conductive portion, which facilitates mutual insulation between the first signal line 151 and the first conductive portion, thereby reducing the risk of signal interference within the display panel 100.

[0097] like Figure 4 and Figure 5 As shown, in some embodiments, the first driving electrode portion 1231 may be located on a side of the light emitting functional layer 121 facing the encapsulation layer 130 .

[0098] Thus, the second driving electrode portion 1241 is located on the side of the light emitting functional layer 121 facing the substrate 110 , the first driving electrode portion 1231 can serve as the cathode of the light emitting functional layer 121 , and the second driving electrode portion 1241 can serve as the anode of the light emitting functional layer 121 .

[0099] Since the first electrode portion 141 and the first driving electrode portion 1231 are arranged on the same layer, the first electrode portion 141 can be located in the cavity structure 132. For example, the first electrode portion 141 can be located on the side of the pixel definition layer 122 facing the cavity structure 132 and in the cavity structure 132. This is beneficial to reduce the distance between the first electrode portion 141 and the second electrode portion 142, which is beneficial to increase the capacitance between the first electrode portion 141 and the second electrode portion 142, which is beneficial to improve the sound effect of the sound component 140.

[0100] Optionally, the orthographic projection of the first driving electrode portion 1231 on the substrate 110 is located within the orthographic projection of the encapsulation portion 131 on the substrate 110 , so that the encapsulation portion 131 can better limit the intrusion of water vapor into the first driving electrode portion 1231 .

[0101] In these embodiments, when the first driving electrode portion 1231 is located on the side of the light-emitting functional layer 121 facing the encapsulation layer 130, as shown in FIG. Figure 4As shown, the second electrode portion 142 can be arranged on the side of the vibration membrane layer 143 facing the cavity structure 132 and located in the cavity structure 132, which is beneficial to reducing the distance between the first electrode portion 141 and the second electrode portion 142, and is beneficial to increasing the capacitance between the first electrode portion 141 and the second electrode portion 142, thereby facilitating improving the sound effect of the sound component 140, or, as shown Figure 5 As shown, the second electrode portion 142 may be disposed on a side of the vibration membrane layer 143 facing away from the cavity structure 132 , which can effectively reduce the difficulty of manufacturing the display panel 100 .

[0102] In some embodiments, when the first driving electrode portion 1231 is located on the side of the light-emitting functional layer 121 facing the encapsulation layer 130, at least part of the first signal line 151 may be disposed on the side of the second driving electrode layer 124 facing the substrate 110 (not shown in the figure), or Figure 6 and Figure 7 As shown, at least part of the first signal lines 151 may be provided in the same layer as the second driving electrode layer 124 and spaced apart from each other.

[0103] The first signal line 151 is electrically connected to the first electrode portion 141 to provide an electrical signal to the first electrode portion 141 through the first signal line 151 .

[0104] In some embodiments, the first signal line 151 may be disposed on the side of the second driving electrode layer 124 facing the substrate 110 (not shown in the figure), which may mean that at least part of the first signal line 151 may be disposed between the second driving electrode layer 124 and the substrate 110, or, may mean that at least part of the first signal line 151 may be disposed in the substrate 110 and disposed on the same layer as related structures in the substrate 110, which is beneficial to simplify the thickness of the display panel 100 and save preparation costs.

[0105] In some other embodiments, Figure 6 and Figure 7 As shown, at least part of the first signal lines 151 and the second driving electrode layer 124 are arranged in the same layer and spaced apart. In this way, the thickness of the display panel 100 is reduced, and the distance between the first signal lines 151 and the first electrode portion 141 along the first direction X is short, and the connection distance between the first signal lines 151 and the first electrode portion 141 is short, which is conducive to simplifying the connection process between the first signal lines 151 and the first electrode portion 141, saving the preparation cost, and improving the connection reliability between the first signal lines 151 and the first electrode portion 141.

[0106] In some embodiments, the display panel 100 further includes a touch layer 160 , and the touch layer 160 can be used to implement a touch function of the display panel 100 . Figures 2 to 7 Although the touch layer 160 is not shown, Figures 2 to 7The display panel 100 shown in the figure may also include a touch layer 160. Figures 2 to 7 The position where the touch layer 160 in the illustrated display panel 100 is arranged is not specifically limited.

[0107] like Figure 8 and Fig. 9 As shown, in some embodiments, the touch layer 160 is disposed on the side of the vibration membrane layer 143 facing away from the packaging layer 130, the touch layer 160 includes a second conductive portion 161, the second electrode portion 142 can be disposed on the side of the vibration membrane layer 143 facing away from the packaging layer 130, and the second electrode portion 142 and the second conductive portion 161 are spaced apart in the same layer.

[0108] The touch layer 160 is used to realize the touch function of the display panel 100. The touch mode of the touch layer 160 can be self-capacitive or mutual-capacitive. The touch layer 160 includes a second conductive portion 161. The second conductive portion 161 can be a touch electrode in the touch layer 160. Alternatively, when the touch mode of the touch layer 160 is self-capacitive, the second conductive portion 161 can also be a bridge electrode.

[0109] The second conductive portion 161 is arranged on the side of the vibration membrane layer 143 facing away from the encapsulation layer 130, and the second electrode portion 142 is arranged using the gap between the second conductive portions 161. The second electrode portion 142 does not need to occupy additional space of the display panel 100, which is conducive to reducing the thickness of the display panel 100. In addition, since the second electrode portion 142 can be formed together with the second conductive portion 161 through a deposition process, and then the second electrode portion 142 and the second conductive portion 161 are formed through an etching process. The second electrode portion 142 and the second conductive portion 161 are arranged at intervals, so that the second electrode portion 142 and the second conductive portion 161 are insulated from each other, and the two can work independently without interfering with each other.

[0110] In this way, the second electrode portion 142 is arranged in the same layer as the second conductive portion 161 in the touch layer 160, and the second electrode portion 142 and the second conductive portion 161 can work independently and simultaneously or at different times. Without affecting the touch function of the display panel 100, it is beneficial to simplify the structure of the display panel 100, save preparation costs, and reduce the thickness of the display panel 100.

[0111] The display panel 100 may further include a protection layer 165 , which is disposed on the top of the touch layer 160 to protect components inside the touch layer 160 .

[0112] like Figure 8 As shown, in some embodiments, the second conductive portion 161 includes a touch electrode portion 162 , and the touch electrode portion 162 can be disposed in the same layer as the second electrode portion 142 and spaced apart.

[0113] In this way, the display panel 100 may be a mutual capacitive touch type, the touch electrode portion 162 may be a touch driving electrode, and the touch layer 160 may further include a touch sensing electrode 164 disposed along the first direction X opposite to the touch electrode portion 162 .

[0114] Therefore, the second conductive portion 161 includes the touch electrode portion 162 , the first electrode portion 141 and the touch electrode portion 162 are arranged in the same layer, and the first electrode portion 141 and the touch electrode portion 162 are prepared by the same process, which is beneficial to simplify the preparation process of the display panel 100 and save preparation costs.

[0115] Optionally, the display panel 100 may further include an insulating layer 166 disposed between the touch sensing electrode 164 and the touch electrode portion 162, so that the touch sensing electrode 164 and the touch electrode portion 162 can be insulated by the insulating layer 166. Exemplarily, the material of the insulating layer 166 may include a photoresist material.

[0116] Optionally, the protection layer 165 may be disposed on a side of the touch sensing electrode 164 facing away from the substrate 110 .

[0117] like Fig. 9 As shown, in other embodiments, the second conductive portion 161 includes a bridging electrode portion 163, and the touch layer 160 also includes a plurality of touch electrode portions 162 disposed on the side of the second conductive portion 161 facing away from the encapsulation layer 130. The bridging electrode portion 163 electrically connects two touch electrode portions 162 adjacent to each other along the second direction Y. The first direction X intersects with the second direction Y, and the second electrode portion 142 and the bridging electrode portion 163 are in the same layer and are spaced apart from each other.

[0118] In this way, the touch control form of the display panel 100 can be a self-capacitive type, and the bridging electrode portion 163 is located on the side of the touch electrode portion 162 facing the substrate 110 along the first direction X. The second electrode portion 142 and the bridging electrode portion 163 are arranged in the same layer and spaced apart, so the two can be formed together with the same process, which is conducive to simplifying the manufacturing process of the display panel 100 and saving the manufacturing cost.

[0119] Optionally, the display panel 100 may further include an insulating layer 166 disposed between the bridging electrode portion 163 and the touch electrode portion 162, and the bridging electrode portion 163 and the touch electrode portion 162 may be connected via a via. For example, the insulating layer 166 may have a via, and a portion of the material of the touch electrode portion 162 may fall into the via of the insulating layer 166 to be connected to the bridging electrode portion 163.

[0120] Optionally, the protection layer 165 may be disposed on a side of the touch electrode portion 162 facing away from the substrate 110 .

[0121] In some embodiments, the display panel 100 further includes a second signal line (not shown in the figure), which may be disposed on a side of the vibration membrane layer 143 facing away from the substrate 110 , and the second signal line is electrically connected to the second electrode portion 142 .

[0122] The second signal line can be electrically connected to the relevant control device of the display panel 100 to provide an electrical signal to the second electrode portion 142 through the second signal line. Optionally, one second signal line can be electrically connected to only one second electrode portion 142, or one second signal line can connect multiple second electrode portions 142.

[0123] like Fig.10 As shown, the display device 10 provided according to an embodiment of the present application includes the display panel 100 provided by any of the above embodiments.

[0124] The display device 10 in the embodiment of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles and other devices with display functions.

[0125] The display device 10 provided in the embodiment of the present application has the same technical effect as the display panel 100 provided in the embodiment of the present application, and thus will not be described in detail herein.

[0126] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that: include: substrate; A light-emitting device layer, disposed on one side of the substrate along the first direction, the light-emitting device layer comprising a plurality of light-emitting functional layers disposed at intervals; An encapsulation layer is provided on a side of the light-emitting device layer facing away from the substrate, the encapsulation layer comprises an encapsulation portion and a cavity structure, the orthographic projection of the encapsulation portion on the substrate covers the orthographic projection of the light-emitting functional layer on the substrate, and the encapsulation portion is provided around the periphery of the cavity structure; A sound-emitting component includes a first electrode portion, a second electrode portion and a vibration membrane layer, wherein the vibration membrane layer is arranged on the side of the packaging layer facing away from the light-emitting device layer, the first electrode portion and the second electrode portion are arranged opposite to each other along the first direction, at least a part of the cavity structure is present between the first electrode portion and the second electrode portion, the second electrode portion is arranged on one side of the vibration membrane layer in the first direction, and the vibration membrane layer is configured to generate vibration and produce sound under the electrostatic force of the first electrode portion and the second electrode portion.

2. The display panel according to claim 1, characterized in that: The light-emitting device layer also includes a first driving electrode layer and a second driving electrode layer, the first driving electrode layer includes a plurality of first driving electrode portions arranged at intervals, the second driving electrode layer includes a plurality of second driving electrode portions arranged at intervals, the first driving electrode portions and the second driving electrode portions are respectively arranged on both sides of the light-emitting functional layer along the first direction; the first electrode portion and the first driving electrode portion are in the same layer and are arranged at intervals.

3. The display panel according to claim 2, characterized in that: The first driving electrode portion is located on a side of the light-emitting functional layer facing the substrate, and an orthographic projection of the first electrode portion on the substrate is staggered from an orthographic projection of the second driving electrode portion on the substrate; Preferably, the second driving electrode portion is disposed between the packaging portion and the light-emitting functional layer; Preferably, the orthographic projection of the second driving electrode portion on the substrate is located within the orthographic projection of the packaging portion on the substrate; Preferably, the first electrode portion is located between the cavity structure and the substrate; Preferably, the second electrode portion is disposed on a side of the vibration membrane layer facing the cavity structure and is located in the cavity structure, or the second electrode portion is disposed on a side of the vibration membrane layer facing away from the cavity structure; Preferably, the display panel further comprises a first signal line, the first signal line is arranged on a side of the first driving electrode layer facing the substrate and is electrically connected to the first electrode portion; Preferably, at least part of the first signal line is disposed in the substrate, the substrate comprises a first conductive portion, and at least part of the first signal line and the first conductive portion are disposed in the same layer and spaced apart.

4. The display panel according to claim 2, characterized in that: The first driving electrode portion is located on a side of the light-emitting functional layer facing the encapsulation layer; Preferably, the orthographic projection of the first driving electrode portion on the substrate is located within the orthographic projection of the packaging portion on the substrate; Preferably, the first electrode portion is located in the cavity structure; Preferably, the second electrode portion is disposed on a side of the vibration membrane layer facing the substrate and located in the cavity structure, or the second electrode portion is disposed on a side of the cavity structure and the vibration membrane layer facing away from the substrate; Preferably, the display panel further comprises a first signal line, and the first signal line is electrically connected to the first electrode portion; At least part of the first signal lines are arranged on a side of the second driving electrode layer facing the substrate; or, At least part of the first signal lines and the second driving electrode layer are in the same layer and are spaced apart from each other.

5. The display panel according to claim 1, characterized in that: The material of the vibration membrane layer includes organic material.

6. The display panel according to any one of claims 1 to 5, characterized in that: The display panel also includes a touch layer, which is arranged on the side of the vibration membrane layer facing away from the packaging layer. The touch layer includes a second conductive portion, and the second electrode portion is arranged on the side of the vibration membrane layer facing away from the packaging layer. The second electrode portion and the second conductive portion are in the same layer and are spaced apart.

7. The display panel according to claim 6, characterized in that: The second conductive portion includes a touch electrode portion, and the touch electrode portion and the second electrode portion are arranged in the same layer and spaced apart; Preferably, the touch layer further includes a touch sensing electrode arranged along the first direction opposite to the touch electrode portion; Preferably, the display panel further comprises an insulating layer arranged between the touch sensing electrode and the touch electrode portion; Preferably, the display panel further comprises a protection layer disposed on a side of the touch sensing electrode facing away from the substrate.

8. The display panel according to claim 6, characterized in that: The second conductive portion includes a bridging electrode portion, the touch layer further includes a plurality of touch electrode portions provided on a side of the second conductive portion facing away from the encapsulation layer, the bridging electrode portion electrically connects two touch electrode portions adjacent to each other along a second direction, the first direction intersects the second direction, and the second electrode portion and the bridging electrode portion are in the same layer and are spaced apart from each other; Preferably, the display panel further comprises an insulating layer disposed between the bridging electrode portion and the touch electrode portion, and the bridging electrode portion is connected to the touch electrode via hole; Preferably, the display panel further comprises a protection layer disposed on a side of the touch electrode portion facing away from the substrate.

9. The display panel according to any one of claims 1 to 5, characterized in that: The display panel further includes a second signal line, which is disposed on a side of the vibration membrane layer facing away from the substrate, and the second signal line is electrically connected to the second electrode portion.

10. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 9.

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