Display panel and display device

Abstract

The display panel comprises a pixel definition layer and a filling part, the pixel definition layer is provided with a light-transmitting opening, the orthographic projection of the light-transmitting opening on a driving back plate is located in a bending area, the light-transmitting opening is filled with the filling part, the filling part is made of a transparent material, ambient light can penetrate through the light-transmitting opening, and the light-transmitting opening can pass through the filling part. Therefore, human eyes can observe the wiring condition of the bending area. The filling part covers the area, exposed in the light-transmitting opening, of the driving back plate, and the filling part is tightly combined with the side wall of the light-transmitting opening, so that water and oxygen can be prevented from entering the light-transmitting opening and corroding wires on the driving back plate, and influence on display is avoided. The invention further provides a display device comprising the display panel.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to a display panel and a display device. Background Technology

[0002] The pixel definition layer is mainly used to separate sub-pixels of different colors. In order to avoid light interference between adjacent sub-pixels and improve color accuracy, the color of the pixel definition layer can be set to black.

[0003] However, when the display panel is bent, poor wiring is likely to occur in the bending area. Since the black pixel definition layer covers the bending area, it is not easy to observe the poor wiring in the bending area. Therefore, a light-transmitting opening is set in the part of the pixel definition layer located in the bending area. The area of ​​the drive backplate exposed in the light-transmitting opening is easily corroded by water and oxygen, resulting in poor display.

[0004] It should be noted that the information in the background section above is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to overcome the problem that the area of ​​the drive backplate exposed in the light-transmitting opening is easily corroded by water and oxygen, resulting in poor display, and to provide a display panel and display device.

[0006] According to one aspect of the present invention, a display panel is provided, the display panel having a display area and a bending area located on one side of the display area, the display panel including a driving back plate, a pixel definition layer and a filling portion; the pixel definition layer is black in color, the pixel definition layer is provided with a light-transmitting opening, the orthographic projection of the light-transmitting opening on the driving back plate is located within the bending area; the filling portion fills the light-transmitting opening, and the filling portion is made of a transparent material.

[0007] In one embodiment of the present invention, the side of the filling portion away from the driving backplate is flush with the side of the pixel definition layer away from the driving backplate.

[0008] In one embodiment of the present invention, the display panel further includes a protective layer, which is disposed on the side of the filling portion away from the driving back plate, and the orthographic projection of the protective layer on the driving back plate does not overlap with the orthographic projection of the display area on the driving back plate.

[0009] In one embodiment of the present invention, a recess is provided on the side of the light-transmitting opening, and a protrusion is provided on the side of the filling portion. The shape and size of the protrusion and the recess match, and the protrusion fills the recess.

[0010] In one embodiment of the present invention, the width of the light-transmitting opening and the width of the filling portion gradually decrease along the direction away from the drive back plate.

[0011] In one embodiment of the present invention, the elastic modulus of the filling portion is less than the elastic modulus of the pixel definition layer.

[0012] In one embodiment of the present invention, a first groove is provided on the side of the filling part away from the drive back plate, the slope angle of the side of the first groove is less than 90 degrees, the protective layer is filled in the first groove, and the refractive index of the protective layer is greater than the refractive index of the filling part.

[0013] In one embodiment of the present invention, both the filling material and the protective layer are made of polyimide.

[0014] In one embodiment of the present invention, the pixel definition layer is further provided with a pixel opening, the orthographic projection of the pixel opening on the driving back plate is located in the display area, and the display panel further includes a light-emitting layer, which includes a plurality of light-emitting devices, and different light-emitting devices are respectively disposed in different pixel openings.

[0015] According to another aspect of the present invention, a display device is provided, comprising a display panel provided in one aspect of the present invention.

[0016] The display panel of this invention includes a pixel definition layer and a filling portion. The pixel definition layer has a light-transmitting opening, and the orthographic projection of the light-transmitting opening onto the driving backplate is located within a bending area. The filling portion fills the light-transmitting opening and is made of a transparent material, allowing ambient light to pass through the opening, thus allowing the human eye to observe the wiring in the bending area. The filling portion covers the area of ​​the driving backplate exposed within the light-transmitting opening, and the filling portion is tightly bonded to the sidewall of the opening, preventing water and oxygen from entering and corroding the wiring on the driving backplate, thus avoiding any impact on the display.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0019] Figure 1 A cross-sectional schematic diagram of the display panel in a flat state is shown in the embodiment of the present invention when the light-transmitting opening is provided in the pixel definition layer and the orthogonal projection of the light-transmitting opening on the driving back plate is located in the bending area.

[0020] Figure 2A cross-sectional schematic diagram of the display panel in the bent state according to an embodiment of the present invention is shown when the light-transmitting opening is provided in the pixel definition layer and the orthogonal projection of the light-transmitting opening on the driving back plate is located in the bending area.

[0021] Figure 3 A cross-sectional schematic diagram of the display panel in a flat state according to an embodiment of the present invention, when the filling portion is filled into the light-transmitting opening.

[0022] Figure 4 A cross-sectional schematic diagram of the display panel in a flat state according to an embodiment of the present invention, wherein a protective layer is provided on the side of the filling portion away from the driving back plate.

[0023] Figure 5 Another cross-sectional view of the display panel in a flat state according to an embodiment of the present invention, where a protective layer is provided on the side of the filling portion away from the drive back plate.

[0024] Figure 6 A cross-sectional schematic diagram of the display panel in a bent state according to an embodiment of the present invention, wherein a protective layer is provided on the side of the filling portion away from the driving back plate.

[0025] Figure 7 A recessed portion is provided on the side of the light-transmitting opening, and the side of the filling portion is provided on the protruding portion. When the protruding portion fills the recessed portion, this is a cross-sectional schematic diagram of the display panel in a flat state according to the embodiment of the present invention.

[0026] Figure 8 This is a cross-sectional schematic diagram of the display panel in a flat state according to an embodiment of the present invention, where the width of the light-transmitting opening and the width of the filling portion gradually decrease along the direction away from the driving back plate.

[0027] Figure 9 A first groove is provided on the side of the filling part away from the driving back plate. When the protective layer is filled in the first groove, this is a cross-sectional schematic diagram of the display panel in a flat state according to the embodiment of the present invention.

[0028] Figure 10 A second groove is formed in the light-transmitting opening on the side of the filling portion away from the driving back plate. When the protective layer fills the second groove, this is a cross-sectional schematic diagram of the display panel in a flat state according to the embodiment of the present invention.

[0029] Figure 11 A cross-sectional schematic diagram of the display panel in a flat state according to an embodiment of the present invention, where a second groove is formed between the side of the filling portion away from the drive back plate and the portion of the sidewall of the light-transmitting opening that is not covered.

[0030] In the diagram: 10-Driver backplane, 11-Substrate, 12-Buffer layer, 13-Driver circuit layer, 131-Active layer, 1321-First gate insulating layer, 1322-Second gate insulating layer, 1331-First gate, 1332-Second gate, 134-Interlayer dielectric layer, 135-First source, 136-Drain, 137-Protective layer, 138-Second source, 139-Planing layer group, 1391-First planarization layer, 1392-Second planarization layer, 15-Pixel definition layer, 151-Pixel aperture, 152-Light transmission aperture 1521-Recessed portion; 16-Light-emitting layer; 160-Light-emitting device; 161-Pixel electrode; 162-Light-emitting unit; 1621-First light-emitting unit; 1622-Second light-emitting unit; 1623-Third light-emitting unit; 163-Common electrode; 17-Encapsulation layer; 171-First inorganic encapsulation layer; 172-Organic encapsulation layer; 173-Second inorganic encapsulation layer; 18-Filled portion; 181-Protrusion; 182-First groove; 183-Second groove; 19-Protective layer; 20-Cover plate; 100-Display area; 200-Bending area. Detailed Implementation

[0031] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted. Furthermore, the drawings are merely illustrative of the invention and are not necessarily drawn to scale.

[0032] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0033] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0034] like Figure 1 and Figure 2 As shown, the pixel definition layer 15 is mainly used to separate sub-pixels of different colors. To avoid light interference between adjacent sub-pixels and improve color accuracy, the pixel definition layer 15 can be set to black. The black pixel definition layer 15 can absorb ambient light and internal stray light, reduce ambient light reflection, and improve the contrast of the display panel. However, when the display panel is bent, poor wiring is prone to occur in the bending area 200, affecting signal transmission. The black pixel definition layer 15 covers the bending area 200, making it difficult to observe poor wiring in the bending area 200. Therefore, a light-transmitting opening 152 is provided in the part of the pixel definition layer 15 located in the bending area 200. The area of ​​the driving backplate 10 exposed in the light-transmitting opening 152 is prone to cracks when bent. Water and oxygen can easily enter the driving backplate 10 through the cracks, corroding the internal wiring of the driving backplate 10 and causing display defects.

[0035] Based on this, embodiments of the present invention provide a display panel. For example... Figures 3 to 9 As shown, the display panel has a display area 100 and a bent area 200 located on one side of the display area 100. The display panel includes a driving backplate 10, a pixel definition layer 15, and a filling portion 18. The pixel definition layer 15 is black in color and has a light-transmitting opening 152. The orthographic projection of the light-transmitting opening 152 on the driving backplate 10 is located within the bent area 200. The filling portion 18 fills the light-transmitting opening 152, and the material of the filling portion 18 is transparent.

[0036] The display panel includes a pixel definition layer 15 and a filling portion 18. The pixel definition layer 15 has a light-transmitting opening 152. The orthographic projection of the light-transmitting opening 152 on the driving backplate 10 is located within the bending area 200. The filling portion 18 fills the light-transmitting opening 152. The filling portion 18 is made of a transparent material, allowing ambient light to pass through the light-transmitting opening 152, thus allowing the human eye to observe the wiring in the bending area 200. The filling portion 18 covers the area of ​​the driving backplate 10 exposed within the light-transmitting opening 152, and the filling portion 18 is tightly bonded to the sidewall of the light-transmitting opening 152, preventing water and oxygen from entering the light-transmitting opening 152 and corroding the wiring on the driving backplate 10, thus avoiding any impact on the display.

[0037] The display panel involved in the embodiments of the present invention will be described in detail below with reference to specific examples.

[0038] like Figures 3 to 6 As shown, the display panel has a display area 100. The display panel may include a driving backplate 10, which may include a substrate 11, a buffer layer 12, and a driving circuit layer 13, with the driving circuit layer 13 disposed on one side of the substrate 11.

[0039] In one embodiment of the present invention, the substrate 11 may also be a flexible substrate 11, for example, the material of the substrate 11 may be polyimide (PI). The substrate 11 may also be a composite of multiple materials. For example, in one embodiment of the present invention, the substrate 11 may include a bottom film layer, a pressure-sensitive adhesive layer, a first polyimide layer and a second polyimide layer stacked sequentially.

[0040] The driving circuit layer 13 is provided with a driving circuit for driving the light-emitting unit 162. The driving circuit is located in the display area 100. Any driving circuit may include a transistor, which may be a thin-film transistor (TFT). The TFT may be selected from top-gate TFTs, bottom-gate TFTs, or dual-gate TFTs. Taking a top-gate TFT as an example, the driving circuit layer 13 may include a first active layer 131, a first gate insulating layer 1321, a first gate 1331 layer, a second gate insulating layer 1322, a second gate 1332 layer, and a first source / drain metal layer, sequentially disposed along a direction away from the substrate 11, wherein: The first active layer 131 is disposed on one side of the substrate 11. The material of the first active layer 131 can be amorphous silicon semiconductor material, low-temperature polycrystalline silicon semiconductor material, metal oxide semiconductor material, organic semiconductor material, or other types of semiconductor material. Therefore, the thin film transistor can be an N-type thin film transistor or a P-type thin film transistor. The first active layer 131 may include a channel region and two doped regions of different doping types located on both sides of the channel region.

[0041] The first gate insulating layer 1321 is disposed on the side of the active layer 131 away from the substrate 11. The first gate insulating layer 1321 can cover the active layer 131 and the substrate 11. The first gate 1331 layer can include the first gate 1331. The first gate 1331 is disposed on the side of the first gate insulating layer 1321 away from the substrate 11 and is directly opposite to the active layer 131. That is, the projection of the first gate 1331 on the substrate 11 is located within the projection range of the active layer 131 on the substrate 11. For example, the projection of the first gate 1331 on the substrate 11 coincides with the projection of the channel region of the active layer 131 on the substrate 11. The second gate insulating layer 1322 is disposed on the side of the first gate 1331 away from the substrate 11. The second gate insulating layer 1322 can cover the first gate 1331 and the first gate insulating layer 1321. The second gate 1332 layer can include the second gate 1332, which is disposed on the side of the second gate insulating layer 1322 away from the substrate 11 and is directly opposite the active layer 131. The materials of the first gate insulating layer 1321 and the second gate insulating layer 1322 are both insulating materials such as silicon oxide.

[0042] The thin-film transistor may further include an interlayer dielectric layer 134, which is disposed on the side of the second gate 1332 away from the substrate 11, and may cover the second gate 1332 and the second gate insulating layer 1322. A first source / drain metal layer is disposed on the surface of the interlayer dielectric layer 134 away from the substrate 11, and may include a first source 135 and a drain 136, which are connected to the first active layer 131. For example, the first source 135 and the drain 136 are respectively connected to two doped regions of the corresponding first active layer 131 through vias. A protective layer 137 may also be provided on the side of the first source 135 away from the substrate 11, and the protective layer 137 covers the first source 135 and the drain 136. The driving circuit layer 13 may also include a planarization layer group 139, which includes a first planarization layer 1391. The first planarization layer 1391 is disposed on the side of the protective layer 137 away from the substrate 11, and the first planarization layer 1391 covers the protective layer 137.

[0043] The driving circuit layer 13 may further include a second source / drain metal layer, which is disposed on the side of the first planarization layer 1391 away from the substrate 11. The second source / drain metal layer may include a second source 138, which is connected to the first source 135. The planarization layer group 139 may further include a second planarization layer 1392, which is disposed on the side of the second source 138 away from the substrate 11. The second planarization layer 1392 covers the second source 138 and the first planarization layer 1391.

[0044] The display panel may further include a pixel definition layer 15 and a light-emitting layer 16. The pixel definition layer 15 is located on the driving side of the driving backplate 10, that is, on the side of the driving circuit layer 13 away from the substrate 11. The pixel definition layer 15 is black in color and has multiple pixel openings 151. The orthogonal projection of the pixel openings 151 on the driving backplate 10 is located in the display area 100. The light-emitting layer 16 includes multiple light-emitting devices 160. Different light-emitting devices 160 are respectively located in different pixel openings 151. The driving backplate 10 controls the light emission of different light-emitting devices 160 to achieve image display.

[0045] Each light-emitting device 160 may include a pixel electrode 161, a light-emitting unit 162, and a common electrode 163. The pixel electrode 161 is located on the surface of the first planarization layer 1391 or the second planarization layer 1392 away from the substrate 11. The light-emitting unit 162 is disposed on the surface of the pixel electrode 161 away from the substrate 11, and the common electrode 163 is disposed on the surface of the light-emitting unit 162 away from the substrate 11. The light-emitting unit 162 can be driven to emit light through the pixel electrode 161 and the common electrode 163 to display an image.

[0046] Pixel electrode 161 is connected to either the first source 135 or the second source 138. When the thin-film transistor includes only the first source 135, pixel electrode 161 is connected to the first source 135, and pixel definition layer 15 covers pixel electrode 161 and the first planarization layer 1391. When the thin-film transistor also includes the second source 138, pixel electrode 161 is connected to the second source 138, and pixel definition layer 15 covers pixel electrode 161 and the second planarization layer 1392.

[0047] The common electrode 163 can serve as a cathode, and the pixel electrode 161 can serve as an anode. Light emission from the light-emitting unit 162 can be driven by applying a signal to the pixel electrode 161; the specific light emission principle will not be detailed here. The light-emitting unit 162 may contain an electroluminescent organic light-emitting material and can be formed using processes such as vapor deposition. For example, the light-emitting unit 162 may include a hole injection layer, a hole transport layer, a light generation layer, an electron transport layer, and an electron injection layer sequentially stacked on the pixel electrode 161.

[0048] Depending on the color of the light emitted, the light-emitting unit 162 may include a first light-emitting unit 1621, a second light-emitting unit 1622, and a third light-emitting unit 1623. The color of the first light-emitting unit 1621 may be red, the color of the second light-emitting unit 1622 may be blue, and the color of the third light-emitting unit 1623 may be green.

[0049] To narrow the bottom bezel of the display panel, a bending area 200 can be provided on the display panel. The bending area 200 is located on one side of the display area 100. The bonding area of ​​the display panel is bent to its back side through the bending area 200. One end of the flexible circuit board is connected to the bonding area of ​​the display panel, and the other end is connected to the control circuit board located on the back of the display panel. To facilitate observation of poor wiring in the driving backplate 10 in the bending area 200, a light-transmitting opening 152 is provided on the pixel definition layer 15. The orthogonal projection of the light-transmitting opening 152 on the driving backplate 10 is located within the bending area 200.

[0050] Since the driving backplate 10 is located in the bending area 200, cracks are prone to occur during the bending process of the display panel. The display panel may also include a filling portion 18, which fills the light-transmitting opening 152 to prevent water and oxygen from easily entering through the cracks and corroding the traces of the driving backplate 10. Therefore, to facilitate observation of the traces of the driving backplate 10 in the bending area 200, the filling portion 18 is made of a transparent material. This allows for non-destructive observation of the bending area 200 of the display panel, improving the efficiency of identifying trace defects without damaging the film layer of the display panel.

[0051] After the filling portion 18 is formed, in order to ensure the flatness of the display panel and facilitate the formation of subsequent film layers, the side of the filling portion 18 away from the driving back plate 10 is made flush with the side of the pixel definition layer 15 away from the driving back plate 10.

[0052] During the bending process of the display panel, excessive bending stress can easily lead to the peeling of layers. For example... Figure 7 As shown, to prevent the side of the filling portion 18 from separating from the side of the light-transmitting opening 152, a recessed portion 1521 can be provided on the side of the light-transmitting opening 152, and a protrusion 181 can be provided on the side of the filling portion 18. The shape and size of the protrusion 181 and the recessed portion 1521 are matched, and the protrusion 181 fills the recessed portion 1521. In other embodiments, a protrusion 181 can be provided on the side of the light-transmitting opening 152, and a recessed portion 1521 can be provided on the side of the filling portion 18. Alternatively, both a protrusion 181 and a recessed portion 1521 can be provided on the side of the light-transmitting opening 152, and a recessed portion 1521 and a protrusion 181 matching the protrusion 181 and the recessed portion 1521 can be provided at corresponding positions on the side of the filling portion 18.

[0053] like Figure 8 As shown, the width of the light-transmitting opening 152 and the width of the filling portion 18 can also be configured to gradually decrease along the direction away from the driving backplate 10. When the display panel is subjected to bending stress, the driving backplate 10 will squeeze the filling portion 18 away from it, and the side of the light-transmitting opening 152 will apply a force to the side of the filling portion 18 pointing towards the side of the driving backplate 10 to prevent the filling portion 18 from coming out of the light-transmitting opening 152.

[0054] The display panel may also include a protective layer 19, which is disposed on the side of the filling portion 18 away from the driving backplate 10. The orthographic projection of the protective layer 19 on the driving backplate 10 does not overlap with the orthographic projection of the display area 100 on the driving backplate 10. Water and oxygen can only enter the side of the light-transmitting opening 152 from between the protective layer 19 and the pixel definition layer 15. Therefore, the protective layer 19 can further extend the intrusion path of water and oxygen, slow down the intrusion of water and oxygen, and improve the flatness of the film layer. In order to reduce the bending stress of the display panel in the bending area 200, the elastic modulus of the filling portion 18 can be set to be less than the elastic modulus of the pixel definition layer 15. With the reduction of bending stress, the possibility of the bending portion coming off the light-transmitting opening 152 can also be reduced. Similarly, the elastic modulus of the protective layer 19 can also be set to be less than the elastic modulus of the pixel definition layer 15.

[0055] It should be noted that the materials of the filler 18 and the protective layer 19 can both be polyimide.

[0056] Light is easily scattered when passing through different film layers, resulting in poor trace quality in the 200-degree bending region, making it difficult to observe clearly. For example... Figure 9 As shown, a first groove 182 can be provided on the side of the filling part 18 away from the drive back plate 10. The slope angle of the side of the first groove 182 is less than 90 degrees, that is, the angle between the side of the first groove 182 and the bottom surface is less than 90 degrees. The filling part 18 fills the first groove 182, and the refractive index of the protective layer 19 is greater than the refractive index of the filling part 18. The reflected light from the ambient light is refracted when passing through the inclined interface, causing the light to converge towards the center of the filling part 18. This makes the poor wiring in the bending area 200 more clearly observable.

[0057] like Figure 10 As shown, the filling portion 18 covers the portion of the driving backplate 10 that exposes the light-transmitting opening 152, and extends along the side of the light-transmitting opening 152 to the side of the pixel definition layer 15 away from the driving backplate 10. The side of the filling portion 18 away from the driving backplate 10 forms a second groove 183 within the light-transmitting opening 152. The protective layer 19 fills the second groove 183 and covers the side of the filling portion 18 away from the pixel definition layer 15. The filling portion 18 covers the bottom surface, side surface, and side of the light-transmitting opening 152, as well as the side of the pixel definition layer 15 away from the driving backplate 10, thus increasing the coverage area and consequently increasing the bonding force. The protective layer 19 is bonded to both the bottom and side surfaces of the second groove 183, making it less likely for the protective layer 19 to separate from the filling portion 18 when the display panel is bent. Therefore, separation between the protective layer 19, the filling portion 18, and the pixel definition layer 15 is less likely.

[0058] like Figure 11 As shown, the side of the filling portion 18 away from the driving backplate 10 is lower than the side of the pixel definition layer 15 away from the driving backplate 10. The side of the filling portion 18 away from the driving backplate 10 and the uncovered portion of the sidewall of the light-transmitting opening 152 form a second groove 183. The protective layer 19 fills the second groove 183 and covers the side of the pixel definition layer 15 away from the driving backplate 10. The bottom and side surfaces of the protective layer 19 and the second groove 183 are bonded together, so the protective layer 19 is not easily separated from the filling portion 18 when the display panel is bent. The filling portion 18 is also not easily loosened because it is confined between the protective layer 19 and the bottom surface of the light-transmitting opening 152. Therefore, the protective layer 19, the filling portion 18, and the pixel definition layer 15 are not easily separated.

[0059] like Figure 4As shown, the display panel may further include an encapsulation layer 17, which is disposed on the side of the light-emitting layer 16 away from the substrate 11, thereby covering the light-emitting layer 16 and preventing water and oxygen corrosion. The encapsulation layer 17 may be a single-layer or multi-layer structure, and the material of the encapsulation layer 17 may include organic or inorganic materials, without special limitation. In this embodiment, the encapsulation layer 17 may include a first inorganic encapsulation layer 171, an organic encapsulation layer 172, and a second inorganic encapsulation layer 173. The first inorganic encapsulation layer 171 is disposed on the side of the light-emitting layer 16 away from the substrate 11, the organic encapsulation layer 172 is disposed on the side of the first inorganic encapsulation layer 171 away from the substrate 11, and the second inorganic encapsulation layer 173 is disposed on the side of the organic encapsulation layer 172 away from the substrate 11.

[0060] The display panel may also include a cover plate 20, which may be disposed on the side of the encapsulation layer 17 away from the substrate 11.

[0061] This invention also provides a display device, which may include the display panel mentioned above in this invention. The specific structure and beneficial effects of the display panel have been described in detail above, and therefore will not be repeated here.

[0062] It should be noted that, in addition to the display panel, the display device also includes other necessary components and parts, such as the casing, circuit board, power cord, etc. Those skilled in the art can make corresponding additions according to the specific usage requirements of the display device, which will not be elaborated here.

[0063] Display devices can be traditional electronic devices, such as mobile phones, computers, televisions, and video recorders, or emerging wearable devices, such as virtual reality devices and augmented reality devices, which will not be listed here.

[0064] It should be noted that the above embodiments are interconnected and can be combined to form other solutions. The solutions of the present invention are not limited to those described in the above embodiments. Those skilled in the art will readily conceive of other embodiments of the invention upon considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the appended claims.

Claims

1. A display panel having a display area and a bending area located at one side of the display area, characterized in that, The display panel comprises: a driving back plate; a pixel definition layer, the color of the pixel definition layer is black, the pixel definition layer is provided with a light transmission opening, the orthographic projection of the light transmission opening on the driving back plate is located in the bending area; a filling part filled in the light transmission opening, the material of the filling part is transparent material.

2. The display panel of claim 1, wherein, The side of the filling part away from the driving back plate is flush with the side of the pixel definition layer away from the driving back plate.

3. The display panel of claim 2, wherein, The display panel further comprises a protective layer, the protective layer is arranged on the side of the filling part away from the driving back plate, the orthographic projection of the protective layer on the driving back plate does not overlap with the orthographic projection of the display area on the driving back plate.

4. The display panel of claim 1, wherein, The side of the light transmission opening is provided with a recessed part, the side of the filling part is provided with a protruding part, the shape and size of the protruding part match those of the recessed part, and the protruding part is filled in the recessed part.

5. The display panel of claim 1, wherein, In the direction away from the driving back plate, the width of the light transmission opening and the width of the filling part gradually decrease.

6. The display panel of claim 1, wherein, The elastic modulus of the filling part is less than the elastic modulus of the pixel definition layer.

7. The display panel of claim 3, wherein, The side of the filling part away from the driving back plate is provided with a first groove, the slope angle of the side of the first groove is less than 90 degrees, the protective layer is filled in the first groove, and the refractive index of the protective layer is greater than the refractive index of the filling part.

8. The display panel of claim 3, wherein, The side of the filling part away from the driving back plate is lower than the side of the pixel definition layer away from the driving back plate, the side of the filling part away from the driving back plate and the uncovered part of the side wall of the light transmission opening form a second groove, the protective layer fills the second groove and covers the side of the pixel definition layer away from the driving back plate.

9. The display panel of claim 3, wherein, The filling part covers the part of the driving back plate exposing the light transmission opening and extends to the side of the pixel definition layer away from the driving back plate along the side of the light transmission opening, the side of the filling part away from the driving back plate forms a second groove in the light transmission opening, the protective layer fills the second groove and covers the side of the filling part away from the pixel definition layer.

10. A display device, characterized by comprising: The display panel comprises the display panel of any one of claims 1 to 9.

Images