Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises a display area, a non-display area connected with the display area, and a bending area arranged on the side of the non-display area away from the display area. The display panel further comprises a substrate, a composite film group, a flat layer, and a polarizer. The composite film group is arranged on one side of the substrate and extends from the display area to the non-display area. The flat layer is arranged on the side of the substrate away from the composite film group and extends from the bending area to the non-display area. The polarizer is arranged on the side of the flat layer away from the substrate and extends from the display area to the non-display area. In the non-display area, the boundary of the composite film group and the boundary of the polarizer are not located in the same plane as the boundary of the flat layer, that is, the boundaries of the composite film group, the polarizer, and the flat layer are arranged in a staggered manner, so as to reduce the stress borne by the inorganic film layer at the boundary of the flat layer, and further reduce the risk of peeling and tearing of the inorganic film layer.

Description

TECHNICAL FIELD

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

[0002] At present, the demand for high screen-to-body ratio products in the market is increasing, and thus the demand for narrow frame is also increasing.

[0003] In the design of narrow frame, part of the area of the display panel is bent. The stress of the bending on the display panel acts on the boundary of the film layer in the screen body, and thus the boundary of the film layer is prone to breakage under the stress. SUMMARY

[0004] The purpose of the present application is to provide a display panel and a display device to solve the problem of black spots at the edge of the display panel in related display technology.

[0005] To achieve the above-mentioned purpose, the present application provides a display panel, which comprises a display area, a non-display area connected with the display area, and a bending area provided on the side of the non-display area away from the display area, and further comprises a substrate, a composite film group, a flat layer and a polarizer. The display area, the non-display area and the bending area are provided on the substrate, and the non-display area is located between the display area and the bending area. The composite film group is provided on one side of the substrate and extends from the display area to the non-display area. The flat layer is provided on the side of the substrate away from the composite film group and extends from the bending area to the non-display area. The polarizer is located on the side of the flat layer away from the substrate and extends from the display area to the non-display area. In the non-display area, the boundary of the composite film group and the boundary of the polarizer are not located in the same plane as the boundary of the flat layer along the thickness direction of the display panel.

[0006] Further, the boundary of the composite film group and the boundary of the polarizer are not located in the same plane. Preferably, the distance between the composite film group and the bending area is less than or greater than the distance between the polarizer and the bending area.

[0007] Further, the orthogonal projection of the flat layer on the substrate and the orthogonal projection of the composite film group on the substrate do not overlap or at least partially overlap. Preferably, the sum of the width of the composite film group in the non-display area and the width of the flat layer in the non-display area is less than or greater than the width of the non-display area.

[0008] Further, a normal projection of the flat layer on the substrate does not overlap or at least partially overlaps with a normal projection of the polarizer on the substrate. Preferably, a sum of a width of the polarizer in the non-display area and a width of the flat layer in the non-display area is less than or greater than a width of the non-display area.

[0009] Further, the substrate comprises a driving film group, an encapsulating film group and a substrate film group. The driving film group is located on a side of the flat layer close to the composite film group. The encapsulating film group is located on a side of the driving film group away from the composite film group. The substrate film group is located between the driving film group and the composite film group.

[0010] Further, the driving film group comprises a first metal layer and a second metal layer. In the non-display area, the first metal layer comprises a plurality of first signal lines, and the second metal layer comprises a plurality of second signal lines. Preferably, a normal projection of the first signal lines on the substrate film group does not overlap with a normal projection of the second signal lines on the substrate film group.

[0011] Further, the encapsulating film group comprises a first inorganic layer and a second inorganic layer. The first inorganic layer is located on a side of the driving layer away from the composite film layer. The second inorganic layer is located on a side of the first inorganic layer away from the composite film layer. Preferably, a normal projection width of the first inorganic layer on the composite film group is less than a normal projection width of the second inorganic layer on the composite film group.

[0012] Further, the composite film group comprises a buffer layer, a support layer and a conductive layer. The buffer layer is located on a side of the substrate away from the polarizer. The support layer is located on a side of the buffer layer away from the polarizer. The conductive layer is located on a side of the support layer away from the polarizer. Preferably, the composite film group further comprises a glue layer, which is located on a side of the composite film group close to the substrate and / or between two adjacent film layers in the composite film group.

[0013] Further, the display panel further comprises a touch film group located between the polarizer and the substrate. Preferably, the display panel further comprises a protective layer located on a side of the touch film group away from the composite film group. Preferably, a material of the protective layer comprises optical glue.

[0014] The application further provides a display device comprising the display panel as described above.

[0015] The panel and the display device have the advantages that the boundary of the composite film group, the polaroid and the flat layer in the display panel is misaligned, thereby reducing the stress of the inorganic film layer at the boundary of the flat layer due to the coincidence of the boundary of the composite film group and the polaroid, reducing the risk of peeling and tearing of the inorganic film layer in the non-display area, preventing water vapor from invading, protecting the wiring in the substrate, and solving the problem of black spots in the non-display area of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 A schematic diagram of the layered structure of the display panel in the related art;

[0018] Figure 2 A schematic diagram of the layered structure of the display panel in the embodiment of the present application;

[0019] Figure 3 A schematic diagram of the layered structure of the composite film group in the embodiment of the present application;

[0020] Figure 4 A schematic diagram of the layered structure of the substrate in the embodiment of the present application;

[0021] Figure 5 A schematic diagram of the layered structure of the display panel in another embodiment of the present application;

[0022] Figure 6 A schematic diagram of the layered structure of the substrate in another embodiment of the present application;

[0023] Figure 7 A schematic diagram of the layered structure of the display panel in another embodiment of the present application;

[0024] Figure 8 A schematic diagram of the layered structure of the display panel in another embodiment of the present application.

[0025] The components in the drawings are as follows:

[0026] Display panel 1; Display area 1A;

[0027] Non-display area 1B; Bending area 1C;

[0028] Composite film group 10; Conductive layer 11;

[0029] Support layer 12; Buffer layer 13;

[0030] adhesive layer 14; substrate 20;

[0031] substrate film group 21; flexible layer 211;

[0032] barrier layer 212; buffer layer 213;

[0033] drive film group 22; semiconductor layer 221;

[0034] first metal layer 222; gate portion 2221;

[0035] first signal line 2222; second metal layer 223;

[0036] source-drain portion 2231; second signal line 2232;

[0037] insulating layer 224; planarization layer 23, 23';

[0038] emitting film group 24; encapsulation film group 25;

[0039] first inorganic layer 251; organic layer 252;

[0040] second inorganic layer 253; touch film group 30;

[0041] protective layer 31; polarizer 40, 40';

[0042] ear area EA. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present application will be described herein below with reference to the accompanying drawings, of which the preferred embodiments of the present application are illustrated. The preferred embodiments of the present application, which completely and integrally introduce the present application to those skilled in the art, make the technical contents of the present application more clear and convenient to understand. The present application can be embodied in many different forms of the present application, and the scope of protection of the present application is not limited to the embodiments described herein.

[0044] In the drawings, components of the same structure are denoted by the same reference numerals, and components having similar structures or functions are denoted by similar reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present application is not limited to the size and thickness of each component. In order to make the drawing clearer, the thickness of the components is appropriately exaggerated in some places in the drawing.

[0045] In addition, the description of the following embodiments of the application is made with reference to the accompanying drawings, which are used to illustrate specific embodiments of the application that can be used to implement the application. The direction terms mentioned in the application, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side" and the like, are only the directions of the accompanying drawings, therefore, the direction terms used are for better, clearer illustration and understanding of the application, and are not indicative or implied that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicative or implied of relative importance.

[0046] When certain components are described as "on" another component, the components can be directly placed on the other component; there can also be an intermediate component, and the components are placed on the intermediate component, and the intermediate component is placed on the other component. When a component is described as "mounted to" or "connected to" another component, it can be understood as being directly "mounted" or "connected", or the component is indirectly "mounted to" or "connected to" the other component through an intermediate component.

[0047] In the process of implementing the application, the inventors found that in the related display technology, the black spot problem at the lower frame position of the display panel has always been a stubborn problem. The main reason is that the film layer at the lower frame ear area (i.e. the area near the bending area) position is prone to Peeling (delamination), crack and other problems due to the large stress received. The common improvement measures at present are to improve the stress of the film layer, change the boundary of the film layer, etc., but the black spot problem of the ear area cannot be completely improved, such as Figure 1 As shown in FIG. 1B, the boundary of the planar layer 23' in the ear area EA overlaps with the boundary of the POL (Polarizer, polarizer) 40', causing the lower film layer to be pulled by the shrinkage of the polarizer 40' during the reliability test process, prompting the inorganic film layer at the boundary of the planar layer 23' to be more prone to tearing, and the water vapor to be more prone to invading and corroding the wiring in the display panel, and more prone to causing black spots in the ear area EA.

[0048] To solve the above technical problems, a display panel 1 is provided in the embodiments of the application, as shown in Figure 2As shown, the display panel 1 includes a display area 1A, a non-display area 1B, and a bending area 1C. The display area 1A is provided with light emitting devices for presenting display pictures. The non-display area 1B surrounds the display area 1A, and a plurality of signal traces are arranged in the non-display area 1B for transmitting driving signals to the light emitting devices in the display area 1A. The bending area 1C is provided on the side of the non-display area 1B away from the display area 1A, and is used for bending to the back of the display panel 1 and binding connection with a flexible circuit board. Specifically, the display panel 1 includes a composite film group 10, a substrate 20, and a polarizing sheet 40.

[0049] As shown in Figure 2 and Figure 3 , the composite film group 10 includes a conductive layer 11, a support layer 12, and a buffer layer 13. The conductive layer 11 and the support layer 12 are provided in a stack, and the buffer layer 13 is provided on the side of the support layer 12 away from the conductive layer 11. The material of the conductive layer 11 includes copper, aluminum, silver, titanium, and other metal materials with excellent conductive properties. The flexible circuit board bent to the back of the display panel 1 is attached to the side of the conductive layer 11 away from the support layer 12, and the conductive layer 11 is connected with the ground terminal in the flexible circuit board, thereby releasing static electricity in the flexible circuit board and achieving the effect of static shielding. The material of the buffer layer 13 includes foam, which is used to buffer and protect the display panel 1, and reduce the impact of the impact force received by the back of the display panel 1 on the internal devices of the display panel 1. The material of the support layer 12 includes polyimide (PI) or alloy material, which is used to support the conductive layer 11. Further, a glue layer 14 can be added on the side of the composite film group 10 close to the substrate 20 and between adjacent two film layers in the composite film group 10, thereby improving the adhesion between the composite film group 10 and the substrate 20, and preventing the film layers in the composite film group 10 from delaminating.

[0050] As shown in Figure 2 and Figure 4 , the substrate 20 is provided on one side of the composite film group 10, and includes a substrate film group 21, a driving film group 22, a flat layer 23, a light emitting film group 24, and an encapsulation film group 25.

[0051] The substrate film group 21 covers the display area 1A, the non-display area 1B and the bending area 1C, and includes a flexible layer 211, a barrier layer 212 and a buffer layer 213. The material of the flexible layer 211 includes polyimide (PI), which serves as a flexible substrate to support the driving film group 22 while enabling bending display. The barrier layer 212 is arranged on the side of the flexible layer 211 away from the composite film group 10, and its material includes at least one of silicon oxide and silicon nitride. The barrier layer 212 is used to block external static electricity to prevent the external static electricity from affecting the internal circuit. The buffer layer 213 is arranged on the side of the barrier layer 212 away from the composite film group 10, and its material includes at least one of silicon oxide and silicon nitride. The buffer layer 213 is used to protect the semiconductor layer 221 in the driving film group 22. Further, the substrate film group 21 can be provided with multiple layers of the flexible layer 211 and multiple layers of the barrier layer 212, for example, an alternating stack structure of double-layer flexible layer 211 and double-layer barrier layer 212, as shown in FIG. 1B. In other embodiments of the present application, the flexible substrate film group 21 can be converted into a rigid substrate film group 21 by replacing the flexible layer 211 with a rigid support plate such as a glass support plate or a quartz support plate, to provide rigid support for the display panel 1. Figure 4

[0052] The driving film group 22 is arranged on the side of the substrate film group 21 away from the composite film group 10, and includes a semiconductor layer 221, multiple metal layers and an insulating layer 224 for protecting the semiconductor layer 221 and the metal layers. The multiple metal layers include a first metal layer 222 and a second metal layer 223. In the display area 1A, the first metal layer 222 is provided with multiple gate sections 2221, and the second metal layer 223 is provided with multiple source-drain sections 2231. The gate sections 2221 and the source-drain sections 2231, in combination with the semiconductor components in the semiconductor layer 221, can form thin-film transistors for controlling the light-emitting devices to emit light. In the non-display area 1B, the first metal layer 222 is provided with multiple first signal lines 2222, and the second metal layer 223 is provided with multiple second signal lines 2232, as shown in FIG. 1B. The first signal lines 2222 and the second signal lines 2232 are arranged in a staggered manner in the non-display area 1B, and the first signal lines 2222 and the second signal lines 2232 are arranged in a staggered manner in the bending area 1C. Figure 4

[0053] The planar layer 23 is arranged on the side of the driving film group 22 away from the composite film group 10, and located at the end of the non-display area 1B away from the display area 1A, extending from the bending area 1C into the non-display area 1B. The planar layer 23 is used to flatten the surface of the driving film group 22 in the bending area 1C for subsequent process preparation. The material of the planar layer 23 can be an organic material. Compared with inorganic materials, the organic material has toughness and can well relieve bending stress when bending.

[0054] ​​The light-emitting film group 24 is disposed on the side of the driving film group 22 away from the composite film group 10 and is located in the display area 1A. The light-emitting film group 24 contains multiple light-emitting devices, which can be one of the following: OLED (Organic Light Emitting Diode), QLED (Quantum Dot Light Emitting Diodes), Mimi-LED, and Micro-LED. The light-emitting devices are disposed in the display area 1A and are electrically connected to the thin-film transistors in the driving film group 22. Driven by the driving film group 22, the light-emitting devices are illuminated, thereby realizing the display of the image.

[0055] The encapsulation film assembly 25 is disposed on the side of the light-emitting film assembly 24 away from the composite film assembly 10, and includes a first inorganic layer 251, an organic layer 252, and a second inorganic layer 253. The first inorganic layer 251 covers the light-emitting film assembly 24 and extends from the surface of the light-emitting film assembly 24 in the display area 1A away from the composite film assembly 10 to the surface of the planarization layer 23 in the non-display area 1B away from the composite film assembly 10. The organic layer 252 is disposed on the surface of the first inorganic layer 251 away from the composite film assembly 10. The second inorganic layer 253 is disposed on the side of the organic layer 252 away from the composite film assembly 10 and covers the first inorganic layer 251 and the organic layer 252. In this process, the orthographic projection of the organic layer 252 on the composite film assembly 10 overlaps with the orthographic projection of the first inorganic layer 251 on the composite film assembly 10, and the width of the orthographic projection of the organic layer 252 on the composite film assembly 10 is smaller than the width of the orthographic projection of the first inorganic layer 251 on the composite film assembly 10; the orthographic projection of the first inorganic layer 251 on the composite film assembly 10 overlaps with the orthographic projection of the second inorganic layer 253 on the composite film assembly 10, and the width of the orthographic projection of the first inorganic layer 251 on the composite film assembly 10 is smaller than the width of the orthographic projection of the second inorganic layer 253 on the composite film assembly 10. The encapsulation film assembly 25 can be prepared by thin film encapsulation (TFE) process, and it is used to encapsulate and protect the light-emitting film assembly 24 to prevent water and oxygen from intruding and corroding the display device in the light-emitting film assembly 24.

[0056] like Figure 2 As shown, the polarizer 40 is disposed on the side of the substrate 20 away from the composite film group 10 and extends from the display area 1A to the non-display area 1B. It is used to filter the light emitted by the light-emitting device into polarized light.

[0057] In the non-display area 1B, the boundary of the composite film group 10 and the boundary of the polarizer 40 are not in the same plane as the boundary of the flat layer 23 in the thickness direction of the display panel 1, and the plane is perpendicular to the substrate 20, which causes the boundary of the flat layer 23 to be misaligned with the boundary of the polarizer 40 and the composite film group 10, thereby reducing the stress on the inorganic film layer at the boundary of the flat layer 23 when bending, and further reducing the risk of peeling and cracking of the inorganic film layer at the boundary of the flat layer 23.

[0058] Further, the orthographic projection of the flat layer 23 on the substrate 20 does not overlap the orthographic projection of the polarizer 40 on the substrate 20, that is, the sum of the width W40 of the polarizer 40 in the non-display area 1B and the width W23 of the flat layer 23 in the non-display area 1B is less than the width of the non-display area 1B, which causes the flat layer 23 directly above to be free of the polarizer 40, thereby completely removing the bending stress applied by the polarizer 40 to the flat layer 23 when bending in the bending area 1C, and further reducing the stress on the inorganic film layer and the flat layer 23.

[0059] Further, the boundary of the composite film group 10 and the boundary of the polarizer 40 are also not in the same plane as the thickness direction of the display panel 1, and the plane is also perpendicular to the substrate 20, which causes the boundary of the composite film group 10 to be misaligned with the boundary of the polarizer 40. The boundary of the composite film group 10 and the boundary of the polarizer 40 have corners, and when bending in the bending area 1C, the stress applied by the corners of the film layer boundary to the inside of the panel is greater than the stress applied by the middle region of the film layer, and is more prone to tearing, cracking and other problems. Therefore, the boundary of the composite film group 10 is misaligned with the boundary of the polarizer 40, so that the position of the boundary of the composite film group 10 to apply stress to the inside of the substrate 20 is misaligned with the position of the boundary of the polarizer 40 to apply stress to the inside of the substrate 20, preventing the same position from simultaneously bearing two corner stresses, and reducing the risk of tearing of the substrate 20. In order for the polarizer 40 not to cover the flat layer 23, preferably, the distance between the polarizer 40 and the bending area 1C is greater than the distance between the composite film group 10 and the bending area 1C.

[0060] Further, in order to prevent the polarizer 40 from covering the flat layer 23, the edge of the polarizer 40 can only be reduced towards the display area 1A, but due to the limited space in the non-display area 1B, if the edges of the composite film group 10, the polarizer 40 and the flat layer 23 are staggered respectively, and the edges of the composite film group 10 and the polarizer 40 are simultaneously reduced towards the display area 1A, it is easy to cause the staggered effect of the edges to be not obvious, and the precision requirement of the preparation process will also be greatly improved. Therefore, in the embodiment of the present application, the composite film group 10 is extended towards the bending area 1C, so as to make the orthographic projection of the flat layer 23 on the substrate 20 at least partially overlap with the orthographic projection of the composite film group 10 on the substrate 20, that is, the sum of the width W10 of the composite film group 10 in the non-display area 1B and the width W23 of the flat layer 23 in the non-display area 1B is greater than the width of the non-display area 1B, so as to meet the staggered requirement of the composite film group 10, the polarizer 40 and the flat layer 23 respectively, and also meet the requirement that the polarizer 40 does not cover the flat layer 23, so as to maximize the effect of reducing the stress in the substrate 20 and preventing the inorganic film layer at the edge of the flat layer 23 from peeling and cracking without improving the process difficulty.

[0061] Further, the display panel 1 further comprises a touch film group 30. The touch film group 30 is arranged between the polarizer 40 and the substrate 20, and is used to realize touch control and improve user interaction experience. Preferably, a protective layer 31 is arranged on the side of the touch film group 30 away from the composite film group 10, and the material of the protective layer 31 comprises optical glue, which is used to protect the touch film group 30, and also can adhere the polarizer 40 to the surface of the touch film group 30.

[0062] In the embodiment of the present application, a display device is also provided, which can be one of an OLED display device, a QLED display device or an M-LED display device, and the like, and comprises the display panel 1 as described above. The display device can be any display device with display function, such as a mobile phone, a notebook computer, a tablet computer and the like.

[0063] In the embodiment of the present application, by staggered arrangement of the edges of the composite film group, the polarizer and the flat layer, the stress borne by the inorganic film layer at the edge of the flat layer is reduced, and the risk of peeling and tearing of the inorganic film layer in the non-display area is reduced, so as to better prevent water vapor from invading, protect the wiring in the substrate, and prevent the non-display area of the display panel from appearing black spot problem.

[0064] Further, in the embodiment of the present application, by reducing the width of the polarizer 40, the impression of the polarizer 40 on the bending area 1C can be reduced, the frame width of the display panel 1 can also be reduced, the narrow frame design can be realized, and by extending the composite film group 10, the coverage area of the composite film group 10 is increased, and the overall strength of the display panel 1 can also be improved.

[0065] In another embodiment of the present application, a display panel 1 is also provided, as shown in Figure 5 The display panel 1 includes a display area 1A, a folding area 1C, and a non-display area 1B disposed between the display area 1A and the folding area 1C. Specifically, the display panel 1 includes a composite film group 10, a substrate 20 disposed on one side of the composite film group 10, and a polarizer 40 disposed on the side of the substrate away from the composite film group 10.

[0066] As shown in Figure 6 The substrate 20 includes a substrate film group 21, a drive film group 22, a planarization layer 23, a light-emitting film group 24, and an encapsulation film group 25. The substrate film group 21 covers the display area 1A, the non-display area 1B, and the folding area 1C, and serves as a flexible substrate to support the drive film group 22 while enabling the display to be bent. The drive film group 22 is disposed on the side of the substrate film group 21 away from the composite film group 10, and includes a plurality of thin film transistors for controlling the light-emitting devices to emit light. The planarization layer 23 is disposed on the side of the drive film group 22 away from the composite film group 10, and is located at the end of the non-display area 1B away from the display area 1A, extending from the folding area 1C into the non-display area 1B, and serves to flatten the surface of the drive film group 22 in the folding area 1C for subsequent process preparation. The light-emitting film group 24 is disposed on the side of the drive film group 22 away from the composite film group 10, and is located in the display area 1A, and includes a plurality of light-emitting devices electrically connected to the thin film transistors in the drive film group 22, which are lit under the drive of the drive film group 22, thereby realizing the display of the picture. The encapsulation film group 25 is disposed on the side of the light-emitting film group 24 away from the composite film group 10, and includes a first inorganic layer 251, an organic layer 252, and a second inorganic layer 253, which serve to encapsulate and protect the light-emitting film group 24 from water and oxygen invasion to corrode the display devices in the light-emitting film group 24.

[0067] As shown in Figure 5 The composite film group 10 and the polarizer 40 both extend from the display area 1A to the non-display area 1B. In the non-display area 1B, the boundary of the composite film group 10 and the boundary of the polarizer 40 are not located in the same plane as the boundary of the planarization layer 23 in the thickness direction of the display panel 1, and the plane is perpendicular to the substrate 20, which causes the boundary of the planarization layer 23 to be misaligned with the boundaries of the polarizer 40 and the composite film group 10, thereby reducing the stress on the inorganic film layer at the boundary of the planarization layer 23 when bent, and further reducing the risk of Peeling and cracking of the inorganic film layer at the boundary of the planarization layer 23.

[0068] Meanwhile, the boundary of the composite film group 10 and the boundary of the polarizer 40 are not located in the same plane in the thickness direction of the display panel 1, and the plane is also perpendicular to the substrate 20, which causes the boundary of the composite film group 10 and the boundary of the polarizer 40 to be staggered, prevents the same position in the display panel 1 from simultaneously bearing the stress of the two film layers when being bent, and reduces the risk of the substrate 20 being torn. In the embodiment of the present application, the distance between the polarizer 40 and the bending area 1C is smaller than the distance between the composite film group 10 and the bending area 1C.

[0069] Further, in the embodiment of the present application, the edge of the polarizer 40 is extended towards the bending area 1C, and the composite film group 10 is reduced towards the display area 1A, which causes the orthographic projection of the flat layer 23 on the substrate 20 to at least partially overlap with the orthographic projection of the polarizer 40 on the substrate 20, and the orthographic projection of the flat layer 23 on the substrate 20 does not overlap with the orthographic projection of the composite film group 10 on the substrate 20, that is, the sum of the width W40 of the polarizer 40 in the non-display area 1B and the width W23 of the flat layer 23 in the non-display area 1B is greater than the width of the non-display area 1B, and the sum of the width W10 of the composite film group 10 in the non-display area 1B and the width W23 of the flat layer 23 in the non-display area 1B is smaller than the width of the non-display area 1B, so as to realize the staggered arrangement of the boundary of the flat layer 23, the boundary of the polarizer 40 and the boundary of the composite film group 10.

[0070] In other embodiments of the display panel provided by the present application, as shown in Figure 7 and Figure 8 , the polarizer 40 and the composite film group 10 can be simultaneously reduced towards the display area 1A, or simultaneously extended towards the bending area 1C, which causes the orthographic projection of the flat layer 23 on the substrate 20 to not overlap or partially overlap with the orthographic projection of the polarizer 40 and the composite film group 10 on the substrate 20 at the same time, so as to also cause the boundary of the composite film group 10 and the boundary of the polarizer 40 to not be located in the same plane in the thickness direction of the display panel 1, and further achieve the effect of reducing the risk of the inorganic film layer at the boundary of the flat layer 23 being peeled and cracked. Since Figure 7 and Figure 8 the film layer structure of the display panel shown in the embodiments is similar to that of the display panel in the embodiments of the present application and the preferred embodiments of the present application, and therefore will not be described in detail here. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0071] Further, the display panel 1 also includes a touch film group 30. The touch film group 30 is arranged between the polarizer 40 and the substrate 20, and is used to realize touch control and improve user interaction experience.

[0072] In the embodiment of the present application, by misaligning the boundaries of the composite film group, the polarizing sheet and the flat layer, the stress borne by the inorganic film layer at the boundary of the flat layer is reduced, thereby reducing the risk of Peeling and tearing of the inorganic film layer in the non-display area, better preventing water vapor from invading, protecting the wiring in the substrate, and preventing the non-display area of the display panel from appearing black spot problems.

[0073] While the present application has been described herein with respect to particular embodiments thereof, it is understood that those skilled in the art will readily make modifications to the illustrated examples and other arrangements, which, while not specifically shown herein, embody principles of the application and fall within its spirit and scope. It is to be understood that different embodiments of the application can be combined with one another, and features described in connection with one embodiment can be used in other embodiments.

Claims

1. A display panel, characterized in that, include: A display area, a non-display area connected to the display area, and a bent area located on the side of the non-display area away from the display area; A substrate, wherein the display area, the non-display area and the bending area are disposed on the substrate, and the non-display area is located between the display area and the bending area; A composite film assembly is disposed on one side of the substrate and extends from the display area to the non-display area; A planarization layer is disposed on the side of the substrate away from the composite film assembly, extending from the bending area to the non-display area; A polarizer is located on the side of the planarization layer away from the substrate, extending from the display area to the non-display area; In the non-display area, the boundaries of the composite film group and the polarizer are not in the same plane as the boundary of the planarization layer along the thickness direction of the display panel; The boundary of the composite film assembly and the boundary of the polarizer are not located in the same plane along the thickness direction of the display panel.

2. The display panel as described in claim 1, characterized in that, The distance between the composite film assembly and the bending area is less than or greater than the distance between the polarizer and the bending area.

3. The display panel as described in claim 2, characterized in that, The orthographic projection of the planarization layer on the substrate does not overlap with or at least partially overlaps with the orthographic projection of the composite film assembly on the substrate.

4. The display panel as described in claim 3, characterized in that, The sum of the width of the composite film assembly in the non-display area and the width of the planar layer in the non-display area is less than or greater than the width of the non-display area.

5. The display panel as described in claim 2, characterized in that, The orthographic projection of the planarization layer on the substrate does not overlap with or at least partially overlaps with the orthographic projection of the polarizer on the substrate.

6. The display panel as described in claim 5, characterized in that, The sum of the width of the polarizer in the non-display area and the width of the planarization layer in the non-display area is less than or greater than the width of the non-display area.

7. The display panel as described in any one of claims 1-6, characterized in that, The substrate includes: The driving membrane module is located on the side of the planarization layer near the composite membrane module; An encapsulation membrane assembly is disposed on the side of the driving membrane assembly away from the composite membrane assembly; A substrate film assembly is disposed between the driving film assembly and the composite film assembly.

8. The display panel as described in claim 7, characterized in that, The driving membrane assembly includes a first metal layer and a second metal layer; In the non-display area, the first metal layer includes multiple first signal lines, and the second metal layer includes multiple second signal lines.

9. The display panel as described in claim 8, characterized in that, The orthographic projection of the first signal line onto the substrate film group does not overlap with the orthographic projection of the second signal line onto the substrate film group.

10. The display panel as claimed in claim 7, characterized in that, The encapsulation film assembly includes: The first inorganic layer is disposed on the side of the driving membrane assembly away from the composite membrane assembly; The second inorganic layer is disposed on the side of the first inorganic layer away from the composite membrane assembly.

11. The display panel as claimed in claim 10, characterized in that, The orthographic projection width of the first inorganic layer on the composite membrane assembly is smaller than the orthographic projection width of the second inorganic layer on the composite membrane assembly.

12. The display panel as claimed in any one of claims 1-6, characterized in that, The composite membrane assembly includes: A buffer layer is disposed on the side of the substrate away from the polarizer; A support layer is disposed on the side of the buffer layer away from the polarizer; A conductive layer is disposed on the side of the support layer away from the polarizer.

13. The display panel as claimed in claim 12, characterized in that, The composite film assembly further includes an adhesive layer, which is disposed on the side of the composite film assembly near the substrate and / or between two adjacent film layers in the composite film assembly.

14. The display panel as claimed in any one of claims 1-6, characterized in that, Also includes: A touch film assembly is disposed between the polarizer and the substrate.

15. The display panel as claimed in claim 14, characterized in that, The display panel also includes a protective layer disposed on the side of the touch film assembly away from the composite film assembly.

16. The display panel as claimed in claim 15, characterized in that, The protective layer is made of optical adhesive.

17. A display device, characterized in that, Includes the display panel as described in any one of claims 1-16.

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