Display panel, display module and electronic device

Abstract

The display panel and electronic device provided by the embodiments of the present application relate to the field of display technology. The above-mentioned display panel uses a polymer protective layer to protect the screen body in the bending area. Compared with the method of using a BPL protective layer to protect the screen body in the bending area, the film thickness of the polymer protective layer is smaller, so the width of the lower frame can be reduced. In addition, since the elastic modulus of the polymer protective layer is generally greater than the elastic modulus of the screen body, a filling area is set on the polymer protective layer and filled with corresponding fillers, so that the elastic modulus of the polymer protective layer after filling the filler at the position corresponding to the polymer protective layer and the screen body matches the elastic modulus of the screen body, and the polymer protective layer will not form a large extrusion stress on the screen body, thereby avoiding poor electrical properties caused by deformation of the signal routing on the screen body due to excessive extrusion stress, and ensuring that the display panel has a good display effect when the lower frame becomes narrower.

Description

Technical Field

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

[0002] As users' requirements for visual experience continue to improve, high screen-to-body ratio of display panels has become an inevitable direction of development in the industry. Reducing the width of the display panel border is an important means to achieve high screen-to-body ratio. Currently, the top border, left border and right border of the display panel can be made very narrow, but the width of the bottom border is difficult to make too narrow. At the same time, when the width of the bottom border is made narrow, poor display is likely to occur. Summary of the invention

[0003] In order to overcome the technical problems mentioned in the above technical background, an embodiment of the present application provides a display panel and an electronic device.

[0004] In a first aspect of the present application, a display panel is provided, comprising a screen body and a protective film layer;

[0005] The screen body comprises a panel area, a bending area and a bonding area, the panel area is connected to the bonding area via the bending area, the screen body has a first surface and a second surface arranged opposite to each other, and the screen body is bent from the second surface toward the side where the first surface is located;

[0006] The protective film layer is at least attached to the second surface corresponding to the bending area;

[0007] The protective film layer includes an adhesive layer, a polymer protective layer and a filler, the polymer protective layer is attached to the second surface through the adhesive layer, and the elastic modulus of the polymer protective layer is greater than the elastic modulus of the screen body;

[0008] A filling area is distributed on the polymer protective layer, the filler is located in the filling area, and at the position where the polymer protective layer corresponds to the screen body, the elastic modulus of the polymer protective layer filled with the filler matches the elastic modulus of the screen body.

[0009] The above-mentioned display panel uses a polymer protective layer to protect the screen body in the bending area. Compared with the method of using a BPL protective layer to protect the screen body in the bending area, the film thickness of the polymer protective layer is smaller, so the width of the lower frame can be reduced. In addition, since the elastic modulus of the polymer protective layer is generally greater than the elastic modulus of the screen body, a filling area is set on the polymer protective layer and filled with corresponding fillers, so that the elastic modulus of the polymer protective layer filled with fillers at the position corresponding to the polymer protective layer and the screen body matches the elastic modulus of the screen body, and the polymer protective layer will not form a large extrusion stress on the screen body, avoiding poor electrical properties caused by deformation of the signal routing on the screen body due to excessive extrusion stress, and ensuring that the display panel has a good display effect when the lower frame becomes narrower.

[0010] In a possible embodiment of the present application, the protective film layer covers the panel area, the bending area and the bonding area of ​​the screen body, and the protective film layer is located on the second surface of the screen body;

[0011] The filling area is distributed in the area corresponding to the bending area;

[0012] Preferably, the filling area includes a filling hole and / or a filling groove.

[0013] In a possible embodiment of the present application, the filling area includes filling holes and / or filling grooves distributed along the extension direction of the polymer protective layer; or,

[0014] The filling area includes filling holes and / or filling grooves distributed along a direction perpendicular to the extension direction of the polymer protective layer.

[0015] In a possible embodiment of the present application, the filling area is evenly distributed on the polymer protective layer corresponding to the bending area;

[0016] Preferably, the filling area is a filling groove, the groove depth of the filling groove gradually decreases from the middle area of ​​the bending zone toward the panel area, and the groove depth of the filling groove gradually decreases from the middle area of ​​the bending zone toward the bonding area.

[0017] In a possible embodiment of the present application, the bending zone includes a middle area, a first bending zone between the middle area and the panel area, and a second bending zone between the middle area and the bonding area, the distribution density of the filling area on the polymer protective layer corresponding to the middle area is greater than the distribution density of the filling area on the polymer protective layer corresponding to the first bending area, and the distribution density of the filling area on the polymer protective layer corresponding to the middle area is greater than the distribution density of the filling area on the polymer protective layer corresponding to the second bending area;

[0018] Preferably, the cross-sectional dimension of the filling area on the polymer protective layer corresponding to the middle area is larger than the cross-sectional dimension of the filling area on the polymer protective layer corresponding to the first bending area, and the cross-sectional dimension of the filling area on the polymer protective layer corresponding to the middle area is larger than the cross-sectional dimension of the filling area on the polymer protective layer corresponding to the second bending area;

[0019] In a possible embodiment of the present application, the distribution density of the filling area on the polymer protective layer gradually decreases from the middle area of ​​the bending zone in the direction toward the panel area, and the distribution density of the filling area on the polymer protective layer gradually decreases from the middle area of ​​the bending zone in the direction toward the bonding area.

[0020] In a possible embodiment of the present application, the fillers with different elastic moduli are filled in different filling areas;

[0021] Preferably, the elastic modulus of the filler gradually increases from the middle area of ​​the bending zone toward the panel area, and the elastic modulus of the filler gradually increases from the middle area of ​​the bending zone toward the bonding zone.

[0022] In a possible embodiment of the present application, the elastic modulus of the filler is smaller than the elastic modulus of the polymer protective layer.

[0023] In a second aspect of the present application, a display module is provided, the display module comprising a screen support film and a display panel in any possible embodiment of the first aspect;

[0024] The screen support film comprises a first screen support film and a second screen support film, wherein the first screen support film contacts a side of the screen located in the panel area and facing the bonding area, and the second screen support film contacts a side of the screen located in the bonding area and facing the panel area;

[0025] Preferably, the display module also includes a composite tape layer and a foam layer located between the first screen support film and the second screen support film, the composite tape layer is located between the first screen support film and the foam layer, and the foam layer is located between the composite tape layer and the second screen support film.

[0026] According to a third aspect of the present application, an electronic device is provided, wherein the electronic device comprises a display panel in any possible embodiment of the first aspect.

[0027] The display panel and electronic device provided in the embodiment of the present application use a polymer protective layer to protect the screen body in the bending area. Compared with the method of using a BPL protective layer to protect the screen body in the bending area, the film thickness of the polymer protective layer is smaller, so the width of the lower frame can be reduced. In addition, since the elastic modulus of the polymer protective layer is generally greater than the elastic modulus of the screen body, a filling area is set on the polymer protective layer and filled with corresponding fillers, so that the elastic modulus of the polymer protective layer after filling the filler at the position corresponding to the polymer protective layer and the screen body matches the elastic modulus of the screen body, and the polymer protective layer will not form a large extrusion stress on the screen body, avoiding poor electrical properties caused by deformation of the signal routing on the screen body due to excessive extrusion stress, and ensuring that the display panel has a good display effect when the lower frame becomes narrower. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of a film layer structure of a display panel in the prior art is illustrated;

[0030] Figure 2 An example of the regional distribution diagram of the screen provided in this embodiment is shown;

[0031] Figure 3 One of the schematic diagrams of a partial film layer structure of a display panel provided in this embodiment is illustrated;

[0032] Figure 4 The second schematic diagram of a partial film layer structure of the display panel provided in this embodiment is illustrated;

[0033] Figure 5 One of the schematic diagrams of the distribution of the filling area on the polymer protective layer provided in this embodiment is illustrated;

[0034] Figure 6 The second schematic diagram illustrating the distribution of the filling area on the polymer protective layer provided in this embodiment;

[0035] Figure 7 The third schematic diagram illustrating the distribution of the filling area on the polymer protective layer provided in this embodiment;

[0036] Figure 8 The fourth schematic diagram illustrating the distribution of the filling area on the polymer protective layer provided in this embodiment;

[0037] Fig. 9 A schematic diagram illustrating a partial film layer structure of the display module provided in this embodiment is illustrated.

[0038] Icons: 10-display panel; 110-screen body; 110A-first surface; 110B-second surface; 1101-panel area; 1102-bending area; 11021-middle area; 11022-first bending area; 11023-second bending area; 1103-bonding area; 120-protective film layer; 1201-adhesive layer; 1202-polymer protective layer; 1202A-filling area; 1203-filler; 130-screen support film; 1301-first screen support film; 1302-second screen support film; 140-composite tape layer; 150-foam layer; 160-polarizer; 170-optical adhesive layer; 180-cover plate. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] In the description of this application, it should be noted that the terms "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0043] It should be noted that, in the absence of conflict, different features in the embodiments of the present application may be combined with each other.

[0044] The inventors analyzed the structure of the existing display panel and found that Figure 1 In order to protect the bending area of ​​the screen body 110, a protective film layer 120 with waterproof, acid and alkali resistance is provided on the bending area of ​​the screen body 110. When bending, the bending radius R of the bending area increases due to the existence of the protective film layer 120, which increases the size of the lower frame of the display panel 10. In the prior art, a bending area protection liquid (BendingProtect Liquid, BPL) is generally coated on the outer side of the bending area of ​​the screen body, and a protective film layer is formed after the BPL is cured. However, due to the large thickness of the formed BPL protective layer, the bending radius R of the bending area is large, and the size of the lower frame of the display panel 10 is also large.

[0045] In order to solve the above technical problems, a protective layer with a thinner film thickness than the BPL protective layer can be used to replace the BPL protective layer. For this purpose, in the prior art, a polymer protective layer that is also waterproof, acid-resistant and alkali-resistant can be used to protect the screen body 110 located in the bending area. However, the inventors found that although the use of a polymer protective layer to protect the screen body 110 in the bending area can reduce the size of the lower frame of the display panel 10, the display defect rate of the display panel 10 will also increase, and the display defects are mainly screen body bright lines and point defects.

[0046] After analyzing the above-mentioned adverse phenomena, the inventor found that the main reason for the above-mentioned adverse phenomena is the poor electrical properties of the signal routing in the bending area of ​​the screen (for example, short circuit or open circuit). After monitoring the various manufacturing process steps of the display panel, the inventor found that during the bending process of the screen, the originally normal signal routing will have poor electrical properties. After further analyzing the bending process, it was found that the fundamental reason for the above-mentioned poor electrical properties is that there are dense signal routings distributed on the bending area of ​​the screen. When bending, because the elastic modulus of the polymer protective layer is greater than the elastic modulus of the screen, when the same deformation is produced, the force required for the deformation of the polymer protective layer will be greater. In the bending area, the force mismatch between the polymer protective layer and the screen will cause the polymer protective layer to have a large compressive stress acting on the screen. The large compressive stress will squeeze the signal routing distributed on the surface of the screen, which will cause poor electrical properties such as signal routing open circuit or short circuit of adjacent signal routing, and ultimately affect the display effect of the display panel.

[0047] In order to solve the above problems, the inventor innovatively designed the following technical solution, and the specific implementation scheme of the present application will be described in detail below in conjunction with the accompanying drawings. It should be noted that the defects existing in the above solutions in the prior art are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above technical problems and the solutions proposed in this embodiment below for the above problems should all be the contributions made by the inventor to the present application in the process of invention and creation, and should not be understood as the technical content known to those skilled in the art.

[0048] Please refer to Figure 2 and Figure 3 , Figure 2 The regional distribution diagram of the screen provided in this embodiment is illustrated. Figure 3 The schematic diagram of the partial film layer structure of the display panel provided in this embodiment is illustrated. In this embodiment, the display panel 10 includes a screen body 110 and a protective film layer 120. The screen body 110 includes a panel area 1101, a bending area 1102 and a bonding area 1103. The panel area 1101 is connected to the bonding area 1103 via the bending area 1102. The signal routing in the screen body 110 can be distributed in a twist shape on the bending area 1102, so the bending area 1102 can also be called a twist area. The screen body 110 has a first surface 110A and a second surface 110B that are arranged opposite to each other. In the bending area 1102, the screen body 110 is bent from the second surface 110B to the side where the first surface 110A is located. After bending, the bonding area 1103 is located on the side where the first surface 110A of the panel area 1101 is located.

[0049] In this embodiment, the protective film layer 120 is at least attached to the second surface 110B corresponding to the bending area 1102. The protective film layer 120 includes an adhesive layer 1201, a polymer protective layer 1202 and a filler 1203. The polymer protective layer 1202 is attached to the second surface 110B through the adhesive layer 1201. The elastic modulus of the polymer protective layer 1202 is greater than the elastic modulus of the screen body 110.

[0050] A filling area 1202A is distributed on the polymer protective layer 1202, and the filler 1203 is located in the filling area 1202A. At the position corresponding to the polymer protective layer 1202 and the screen body 110, the elastic modulus of the polymer protective layer 1202 after being filled with the filler 1203 matches the elastic modulus of the screen body 110, wherein elastic modulus matching means that the elastic moduli of the two are equivalent, that is, the ratio of the difference in the elastic moduli of the two to their own elastic moduli is very small (for example, less than 5%).

[0051] A polymer protective layer 1202 is used to protect the screen body 110 in the bending area. Compared with the method of using a BPL protective layer to protect the screen body 110 in the bending area, the film thickness of the polymer protective layer 1202 is smaller. Generally, the minimum thickness of the BPL protective layer is 0.09 mm, the thickness of the adhesive layer 1201 is about 0.01 mm, and the thickness of the polymer protective layer 1202 is about 0.03 mm. In this way, the width of the lower frame can be reduced. In addition, since the elastic modulus of the polymer protective layer 1202 is generally greater than the elastic modulus of the screen body 110, a filling area 1202A is set on the polymer protective layer 1202 and filled with a corresponding filler 1203. This can make the elastic modulus of the polymer protective layer 1202 after filling the filler 1203 match the elastic modulus of the screen body 110 at the position corresponding to the polymer protective layer 1202 and the screen body 110. The polymer protective layer 1202 will not form a large extrusion stress on the screen body 110, thereby avoiding poor electrical properties caused by deformation of the signal routing on the screen body 110 due to excessive extrusion stress, and ensuring that the display panel 10 will not cause poor display due to the above reasons when the lower frame becomes narrower.

[0052] Further, in this embodiment, please refer again to Figure 3 The protective film layer 120 covers the panel area 1101, the bending area 1102 and the bonding area 1103 of the screen body 110, and the protective film layer 120 is located on the second surface 110B of the screen body 110. The filling area 1202A is distributed in the area corresponding to the bending area 1102, combined with Figure 4 The filling area 1202A may penetrate the polymer protective layer 1202 in the thickness direction of the polymer protective layer 1202, or may not penetrate the polymer protective layer 1202 in the thickness direction of the polymer protective layer 1202. For example, the filling area 1202A may be a filling hole, a filling groove, or a combination of a filling hole and a filling groove.

[0053] In this embodiment, please refer to Figure 5 , the filling area 1202A may be distributed along the extension direction of the polymer protective layer 1202. For example, the filling area 1202A may include filling holes and / or filling grooves distributed along the extension direction of the polymer protective layer 1202, wherein the extension direction of the polymer protective layer 1202 refers to the direction from the end of the bending area 1102 connected to the panel area 1101 toward the end of the bending area 1102 connected to the bonding area 1103, that is, corresponding to Figure 5 The Y direction in the diagram. Figure 6 , the filling area 1202A may be along the direction perpendicular to the extension of the polymer protective layer. For example, the filling area 1202A may include a portion of the filling area 1202A extending along the direction perpendicular to the extension of the polymer protective layer ( Figure 6 Filling holes and / or filling slots distributed in the X direction.

[0054] Further, please refer again to Figure 5 and Figure 6 In a possible implementation of this embodiment, the filling area 1202A may be evenly distributed on the polymer protective layer 1202 corresponding to the bending area 1102. For example, when the filling area 1202A is a filling hole, the same filling hole is evenly distributed on the polymer protective layer 1202 corresponding to the bending area 1102. For another example, when the filling area is a filling groove, the same filling groove is evenly distributed on the polymer protective layer 1202 corresponding to the bending area 1102.

[0055] The distribution of the filling area 1202A can ensure that after being filled with the same filler 1203, the elastic modulus of the polymer protective layer 1202 filled with the filler 1203 is equivalent to that of the screen body 110, and the elastic modulus of the two corresponding parts can match after bending.

[0056] The inventors further discovered that the elastic stress of the screen body 110 is greater in the middle area at the top of the bending zone. If the elastic stress of the polymer protective layer 1202 is much greater than the elastic stress of the screen body 110 in this middle area, it is easy to form a large compressive stress on the surface of the screen body 110. In order to improve the above problem, the following improvement plan is provided.

[0057] Please refer to Figure 4 and Figure 6 In another possible embodiment of the present embodiment, the filling area 1202A is a filling groove, and the filling grooves with different groove depths are evenly distributed on the polymer protective layer 1202 corresponding to the bending area 1102, and the groove depth of the filling groove is from the middle area of ​​the bending area 1102 ( Figure 6 The area near the top dotted line B in the middle) is respectively along the direction toward the panel area 1101 and the bonding area 1103 ( Figure 6 The value of the dotted line B at the top (in the direction of the arrows on both sides) gradually decreases.

[0058] Please refer to Figure 4 and Figure 7 In another implementation of this embodiment, the filling area 1202A may be non-uniformly distributed on the polymer protective layer 1202 corresponding to the bending area 1102. The bending area 1102 may include a middle area 11021 (corresponding to Figure 6The area near the top dotted line B in the middle), the first bending area 11022 between the middle area 11021 and the panel area 1101, and the second bending area 11023 between the middle area 11021 and the bonding area 1103. The distribution density of the filling area 1202A on the polymer protective layer 1202 corresponding to the middle area 11021 is greater than the distribution density of the filling area 1202A on the polymer protective layer 1202 corresponding to the first bending area 11022, and the distribution density of the filling area 1202A on the polymer protective layer 1202 corresponding to the middle area 11021 is greater than the distribution density of the filling area 1202A on the polymer protective layer 1202 corresponding to the second bending area 11023, wherein the distribution density is the proportion of the filling area 1202A per unit area. In this embodiment, the filling area 1202A can be evenly distributed or unevenly distributed on the polymer protective layer 1202 corresponding to the middle area 11021, and the filling area 1202A can be evenly distributed or unevenly distributed on the polymer protective layer 1202 corresponding to the first bending area 11022 and the second bending area 11023.

[0059] When the filling area 1202A is unevenly distributed on the polymer protective layer 1202 corresponding to the middle area 11021, the first bending area 11022 and the second bending area 11023, the distribution density of the filling area 1202A on the polymer protective layer 1202 gradually decreases from the middle area 11021 of the bending area 1102 in the direction toward the panel area 1101, and the distribution density of the filling area 1202A on the polymer protective layer 1202 gradually decreases from the middle area 11021 of the bending area 1102 in the direction toward the bonding area 1103.

[0060] For example, please refer to Figure 8 When the filling area 1202A is a filling hole, the distribution density of the same filling hole on the polymer protective layer 1202 gradually decreases from the middle area 11021 of the bending area 1102 along the direction toward the panel area 1101 and the bonding area 1103. For another example, when the filling area 1202A is a filling groove, the distribution density of the same filling groove on the polymer protective layer 1202 gradually decreases from the middle area 11021 of the bending area 1102 along the direction toward the panel area 1101 and the bonding area 1103.

[0061] In this embodiment, the cross-sectional dimensions of the filling area 1202A at different positions of the polymer protective layer 1202 corresponding to the bending area 1102 may be different. Figure 7, illustratively, the cross-sectional dimension of the filling area 1202A on the polymer protective layer 1202 corresponding to the middle area 11021 is larger than the cross-sectional dimension of the filling area 1202A on the polymer protective layer 1202 corresponding to the first bending area 11022, and the cross-sectional dimension of the filling area 1202A on the polymer protective layer 1202 corresponding to the middle area 11021 is larger than the cross-sectional dimension of the filling area 1202A on the polymer protective layer 1202 corresponding to the second bending area 11023. Here, the cross-sectional dimension is the size of the cross section of the filling area 1202A, with Figure 7 For example, the filling area 1202A is a filling groove, and the groove width of the filling groove located in the middle area 11021 is greater than the groove width of the filling groove in the first bending area 11022 / the second bending area 11023.

[0062] The distribution of the above-mentioned filling area 1202A can make the elastic modulus of the polymer protective layer 1202 filled with the filler 1203 gradually increase from the middle area of ​​the bending zone 1102 along the direction toward the panel area 1101 and the bonding area 1103 respectively after being filled with the same filler 1203, thereby avoiding the problem of excessive compressive stress of the polymer protective layer 1202 on the screen body 110 in the middle area 11021 of the bending zone, and optimizing the elastic modulus matching of the corresponding locations of the polymer protective layer 1202 and the screen body 110 after bending.

[0063] Further, in this embodiment, fillers 1203 with different elastic moduli can be used to fill different filling areas 1202A. Exemplarily, for the filling areas 1202A distributed in the above two possible implementations, when the filler 1203 fills the filling area 1202A, the elastic modulus of the filler 1203 can be gradually increased from the middle area 11021 of the bending area 1102 along the direction toward the panel area 1101 and the bonding area 1103, respectively. In this way, the elastic modulus of the polymer protective layer 1202 after the filler 1203 is filled can be gradually increased from the middle area 11021 of the bending area 1102 along the direction toward the panel area 1101 and the bonding area 1103, respectively, so that the extrusion stress of the polymer protective layer 1202 on the screen body 110 can be improved.

[0064] In this embodiment, the elastic modulus of the filler 1203 is smaller than the elastic modulus of the polymer protective layer 1202 .

[0065] In this embodiment, the filling area includes, but is not limited to, a circular filling area, a square filling area, and an elliptical filling area.

[0066] In this embodiment, the material of the polymer protective layer 1202 and the material of the filler 1203 may include at least one of thermoplastic polyurethanes (TPU), polyethylene terephthalate (PET), and colorless polyimide (CPI).

[0067] Please refer to Fig. 9 This embodiment also provides a display module, which includes a screen support film 130 and the display panel 10 described above, wherein the screen support film 130 includes a first screen support film 1301 and a second screen support film 1302, wherein the first screen support film 1301 contacts the side of the screen 110 located in the panel area 1101 and facing the bonding area 1103, and the second screen support film 1302 contacts the side of the screen 110 located in the bonding area 1103 and facing the panel area 1101.

[0068] Furthermore, the display module also includes a composite tape layer 140 and a foam layer 150 located between the first screen support film 1301 and the second screen support film 1302 , the composite tape layer 140 is located between the first screen support film 1301 and the foam layer 150 , and the foam layer 150 is located between the composite tape layer 140 and the second screen support film 1302 .

[0069] Furthermore, the display module also includes a polarizer 160, an optical adhesive layer 170 and a cover plate 180. In the panel area 1101, the polarizer 160 is located on a side of the screen body 110 away from the first screen body support film 1301, the optical adhesive layer 170 is located on a side of the polarizer 160 away from the first screen body support film 1301, and the cover plate 180 is located on a side of the optical adhesive layer 170 away from the polarizer 160. The optical adhesive layer 170 is used to bond the polarizer 160 and the cover plate 180.

[0070] This embodiment also provides an electronic device, which may include the display panel 10 described in the previous embodiment. The electronic device using the above-mentioned display panel 10 has a stable display function while ensuring a high screen-to-body ratio.

[0071] In summary, the display panel and electronic device provided in the embodiments of the present application use a polymer protective layer to protect the screen body in the bending area. Compared with the method of using a BPL protective layer to protect the screen body in the bending area, the film thickness of the polymer protective layer is smaller, so the width of the lower frame can be reduced. In addition, since the elastic modulus of the polymer protective layer is generally greater than the elastic modulus of the screen body, a filling area is provided on the polymer protective layer and filled with corresponding fillers, so that the elastic modulus of the polymer protective layer after filling the filler at the position corresponding to the polymer protective layer and the screen body matches the elastic modulus of the screen body, and the polymer protective layer will not form a large extrusion stress on the screen body, thereby avoiding poor electrical properties caused by deformation of the signal routing on the screen body due to excessive extrusion stress, and ensuring that the display panel has a good display effect when the lower frame becomes narrower.

[0072] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: Including screen body and protective film layer; The screen body comprises a panel area, a bending area and a bonding area, the panel area is connected to the bonding area via the bending area, the screen body has a first surface and a second surface arranged opposite to each other, and the screen body is bent from the second surface toward the side where the first surface is located; The protective film layer is at least attached to the second surface corresponding to the bending area; The protective film layer includes an adhesive layer, a polymer protective layer and a filler, the polymer protective layer is attached to the second surface through the adhesive layer, and the elastic modulus of the polymer protective layer is greater than the elastic modulus of the screen body; A filling area is distributed on the polymer protective layer, the filler is located in the filling area, and at the position where the polymer protective layer corresponds to the screen body, the elastic modulus of the polymer protective layer filled with the filler matches the elastic modulus of the screen body.

2. The display panel according to claim 1, wherein: The protective film layer covers the panel area, the bending area and the bonding area of ​​the screen body, and the protective film layer is located on the second surface of the screen body; The filling area is distributed in the area corresponding to the bending area.

3. The display panel according to claim 2, wherein: The filling area includes a filling hole and / or a filling groove.

4. The display panel according to claim 3, wherein: The filling area is a filling hole and / or a filling groove distributed along the extension direction of the polymer protective layer; or, The filling area is a filling hole and / or a filling groove distributed along a direction perpendicular to the extension direction of the polymer protective layer.

5. The display panel according to claim 3, wherein: The filling area is evenly distributed on the polymer protective layer corresponding to the bending area.

6. The display panel according to claim 5, wherein: The filling area is a filling groove, the groove depth of the filling groove gradually decreases from the middle area of ​​the bending area toward the panel area, and the groove depth of the filling groove gradually decreases from the middle area of ​​the bending area toward the bonding area.

7. The display panel according to claim 2, wherein: The bending zone includes a middle area, a first bending zone located between the middle area and the panel area, and a second bending zone located between the middle area and the bonding area. The distribution density of the filling area on the polymer protective layer corresponding to the middle area is greater than the distribution density of the filling area on the polymer protective layer corresponding to the first bending zone. The distribution density of the filling area on the polymer protective layer corresponding to the middle area is greater than the distribution density of the filling area on the polymer protective layer corresponding to the second bending zone.

8. The display panel according to claim 7, wherein: The cross-sectional dimension of the filling area on the polymer protective layer corresponding to the middle area is greater than the cross-sectional dimension of the filling area on the polymer protective layer corresponding to the first bending area, and the cross-sectional dimension of the filling area on the polymer protective layer corresponding to the middle area is greater than the cross-sectional dimension of the filling area on the polymer protective layer corresponding to the second bending area.

9. The display panel according to claim 2, wherein: The distribution density of the filling area on the polymer protective layer gradually decreases from the middle area of ​​the bending zone toward the panel area, and the distribution density of the filling area on the polymer protective layer gradually decreases from the middle area of ​​the bending zone toward the bonding area.

10. The display panel according to any one of claims 5 to 9, characterized in that: The fillers with different elastic moduli are filled in different filling areas.

11. The display panel according to claim 10, wherein: The elastic modulus of the filler gradually increases from the middle area of ​​the bending zone toward the panel area, and the elastic modulus of the filler gradually increases from the middle area of ​​the bending zone toward the bonding zone.

12. The display panel according to claim 11, wherein: The elastic modulus of the filler is smaller than the elastic modulus of the polymer protective layer.

13. A display module, characterized in that: The display module comprises a screen support film and a display panel according to any one of claims 1 to 12; The screen support film includes a first screen support film and a second screen support film. The first screen support film contacts the side of the screen located in the panel area and facing the bonding area. The second screen support film contacts the side of the screen located in the bonding area and facing the panel area.

14. The display module according to claim 13, wherein: The display module also includes a composite tape layer and a foam layer located between the first screen support film and the second screen support film, the composite tape layer is located between the first screen support film and the foam layer, and the foam layer is located between the composite tape layer and the second screen support film.

15. An electronic device, characterized in that: The electronic device comprises the display panel according to any one of claims 1 to 12.

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