Display panel, manufacturing method thereof and display device

Abstract

The application provides a display panel and a manufacturing method therefor, and a display device, and relates to the technical field of display. The display panel and the manufacturing method therefor, and the display device provided by the application mainly improve the structure of the barrier wall part of the display panel. A groove for accommodating a water-blocking layer is formed on the part of the barrier wall part facing away from the first surface of the substrate. The water-blocking layer is filled in the groove, so that water vapor in the environment is prevented from invading the display area of the display panel from the edge of the display panel in the lateral direction. The side water vapor blocking performance of the display panel is improved. The application is especially suitable for the case that the first inorganic film layer and the second inorganic film layer in the encapsulation film layer are short at the non-display area overlapping part due to the narrow frame design of the display panel.

Description

TECHNICAL FIELD

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

[0002] Organic light emitting diode (OLED) display has been widely developed and applied due to its simple structure, self-luminescence, fast response speed, ultra-thin, low power consumption and other characteristics. For the existing OLED display panel, water and oxygen in the environment can cause the failure of the OLED device inside the OLED display panel. Therefore, at present, an encapsulation film layer needs to be arranged after the OLED device is manufactured on the substrate to avoid water and oxygen from corroding the OLED device.

[0003] At present, the mainstream encapsulation method of the OLED display panel is to arrange a TFE encapsulation film layer on the substrate, that is, to sequentially arrange a first inorganic film layer, an organic film layer and a second inorganic film layer. Among the encapsulation film layer, the first inorganic film layer and the second inorganic film layer mainly play a role in blocking water and oxygen, and the organic film layer mainly plays a role in extending the water vapor transmission path and releasing the stress of other film layers, and has a small contribution to the water and oxygen blocking effect. The entire encapsulation film layer presents a form in which the first inorganic film layer and the second inorganic film layer wrap the organic film layer. In order to make the encapsulation film layer present this form, a dam portion is arranged on the inner side of the edge of the non-display area of the substrate to avoid the flowable organic material used to form the organic film layer flowing in an unintended direction and then moving to the outer side of the non-display area.

[0004] The encapsulation structure as described above has a small size of the part where the first inorganic film layer and the second inorganic film layer directly overlap with each other when applied to an OLED display panel with a narrow frame design, because the final flow cutoff position of the flowable organic material used to manufacture the organic film layer is relatively close to the boundary position of the first inorganic film layer and the second inorganic film layer. This causes water vapor to easily enter from the side of the display panel, which weakens the reliability of the encapsulation and makes the product have a high failure risk. SUMMARY

[0005] In summary, the technical problem to be solved by the present application is to provide a display panel with strong ability to prevent water vapor from invading from the side.

[0006] The solution adopted by the present application to solve the above technical problem is as follows:

[0007] In a first aspect, the present application provides a display panel, comprising:

[0008] a substrate, a display area and a non-display area surrounding the display area are formed on a first surface of the substrate;

[0009] A retaining wall portion is disposed on the substrate, the retaining wall portion is disposed on the non-display region, and at least one groove is formed on a portion of the retaining wall portion facing away from the first surface;

[0010] A water-blocking layer is filled in the groove.

[0011] Optionally, in some embodiments of the present application, the water-blocking layer is mainly composed of an organic base layer and desiccant particles mixed in the organic base layer.

[0012] Optionally, in some embodiments of the present application, the retaining wall portion is configured in a shape surrounding the display region, and the groove is configured in a shape surrounding the display region.

[0013] Optionally, in some embodiments of the present application, the groove is configured in a zigzag shape.

[0014] Optionally, in some embodiments of the present application, the groove includes a first groove portion and a second groove portion, and a width dimension of the first groove portion is greater than a width dimension of the second groove portion.

[0015] The first surface of the substrate has a side edge defining a periphery thereof and a corner portion defined by two intersecting side edges, the first groove portion is between the side edge and the display region, and the second groove portion is between the corner portion and the display region.

[0016] Optionally, in some embodiments of the present application, the water-blocking layer is formed by deposition of a flowable organic material containing desiccant particles, the retaining wall portion has a plurality of grooves formed on a portion thereof facing away from the first surface, the plurality of grooves are arranged in sequence in a direction away from the display region, a communication groove is formed between adjacent two grooves on the portion of the retaining wall portion facing away from the first surface, the communication groove is in communication with the two grooves on both sides thereof respectively, and the water-blocking layer extends into the communication groove.

[0017] Optionally, in some embodiments of the present application, the retaining wall portion includes a plurality of sub-retaining wall bodies, the plurality of sub-retaining wall bodies are arranged in sequence in a direction surrounding the display region, and at least part of the sub-retaining wall bodies are formed with the groove.

[0018] Optionally, in some embodiments of the present application, the display panel further includes:

[0019] A packaging film layer includes at least a first inorganic film layer and a second inorganic film layer disposed in sequence on the substrate in a direction away from the substrate.

[0020] The barrier wall portion is provided on the first surface, and the first inorganic film layer covers the barrier wall portion.

[0021] The first inorganic film layer is provided on the first surface, the barrier wall portion is provided on a surface of the first inorganic film layer away from the first surface, and the second inorganic film layer covers the barrier wall portion.

[0022] In a second aspect, the present application provides a display panel manufacturing method, comprising:

[0023] A substrate is provided, a display area and a non-display area surrounding the display area are formed on a first surface of the substrate, a barrier wall portion is provided on the substrate, and the barrier wall portion is provided in the non-display area.

[0024] A groove is manufactured on a portion of the barrier wall portion away from the first surface.

[0025] A water-blocking layer is filled in the groove.

[0026] Optionally, in some embodiments of the present application, the barrier wall portion comprises a first portion and a second portion which are sequentially stacked on the substrate, the first portion is formed after the same film layer pattern is formed on the flat layer provided in the pixel display area, and the second portion is formed after the same film layer pattern is formed on the pixel definition layer provided in the display area.

[0027] The groove is manufactured on the portion of the barrier wall portion away from the first surface, comprising:

[0028] A spacer is provided on a surface of the second portion away from the first surface.

[0029] The spacer is patterned to form the groove.

[0030] Optionally, in some embodiments of the present application, the water-blocking layer filled in the groove comprises:

[0031] A flowable organic material containing desiccant particles is provided in the groove.

[0032] The flowable organic material is cured to form the water-blocking layer.

[0033] In a third aspect, the present application provides a display device comprising a display panel, wherein the display panel is the display panel of the first aspect, or the display panel is manufactured by the display panel manufacturing method of the second aspect.

[0034] By adopting the above technical solutions, the present application at least has the following beneficial effects:

[0035] The display panel, manufacturing method thereof and display device provided by the present application mainly improve the structure of the barrier wall part in the display panel. The recess for accommodating the water-blocking layer is formed on the part of the barrier wall part which is away from the first surface of the substrate. The water-blocking layer is filled in the recess, so as to avoid the water vapor in the environment from invading the display area of the display panel along the side direction from the edge of the display panel, improve the side water vapor blocking performance of the display panel, and especially be suitable for the case that the first inorganic film layer and the second inorganic film layer in the packaging film layer are short at the overlapping part in the non-display area due to the narrow frame design of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments are briefly introduced as follows. 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 on the basis of these drawings.

[0037] Figure 1 The structure schematic diagram of the display panel in embodiment 1 provided by the present application is shown in the figure.

[0038] Figure 2 The structure schematic diagram of the display panel in embodiment 1 provided by the present application is shown in the figure. Figure 1 The cross-sectional schematic diagram of A-A in the figure.

[0039] Figures 3 to 7 The structure schematic diagram of the display panel in embodiment 1 provided by the present application is shown in the figure.

[0040] Figure 8 The flow schematic diagram of the manufacturing method of the display panel in embodiment 1 provided by the present application is shown in the figure.

[0041] Figure 9 The flow schematic diagram of the manufacturing method of the display panel in embodiment 1 provided by the present application is shown in the figure.

[0042] Figure 10 The flow schematic diagram of the manufacturing method of the display panel in embodiment 1 provided by the present application is shown in the figure.

[0043] Figure 11 The arrangement schematic diagram of the barrier wall part on the first surface in another embodiment is shown in the figure.

[0044] Figure 12 The position schematic diagram of the recesses and the communication grooves on the barrier wall part in another embodiment is shown in the figure.

[0045] Explanation of reference signs:

[0046] 100 - substrate, 110 - first surface, 110a - side, 110b - corner portion, 120 - flat layer, 130 - base, 200 - barrier portion, 210 - recess, 210a - first recess portion, 210b - second recess portion, 220 - communication groove, 230 - second portion, 240 - spacer, 300 - water-blocking layer, 400 - encapsulation film layer, 410 - first inorganic film layer, 420 - organic film layer, 430 - second inorganic film layer, AA - display area, NA - non-display area. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative labor fall within the protection scope of the present application.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a unique orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or indicating the number of the technical features referred to. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0049] In the application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any embodiment described as "exemplary" in this application is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, for the purposes of explanation, specific details are set forth. It should be appreciated that a person having ordinary skill in the art can realize and implement other embodiments without using these specific details. In other instances, well-known structures and processes are not described in detail in order to avoid obscuring the description of the application. Therefore, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles disclosed herein.

[0050] Example 1

[0051] The main body of the embodiment is a display panel. Please refer to Figure 1 and Figure 2 the structural schematic diagram of the display panel provided by the embodiment, and Figure 1 the sectional schematic diagram at A-A in FIG. 1. It can be seen that in the technical solution provided by the embodiment, the display panel specifically comprises:

[0052] a substrate 100, a display area AA and a non-display area NA surrounding the display area AA are formed on a first surface 110 of the substrate 100;

[0053] a barrier wall part 200, the barrier wall part 200 is arranged on the substrate 100, the barrier wall part 200 is arranged in the non-display area NA, and at least one groove 210 is formed on a part of the barrier wall part 200 facing away from the first surface 110;

[0054] a water-blocking layer 300, the water-blocking layer 300 is filled in the groove 210.

[0055] The technical solution provided by the embodiment mainly improves the structure of the barrier wall part 200 in the display panel. The groove 210 for accommodating the water-blocking layer 300 is formed on the part of the barrier wall part 200 facing away from the first surface 110 of the substrate 100. The water-blocking layer 300 is filled in the groove 210, so as to avoid the water vapor in the environment from invading the display area AA along the side direction of the display panel from the edge of the display panel, improve the side water vapor blocking performance of the display panel, and especially be suitable for the case that the first inorganic film layer 410 and the second inorganic film layer 430 in the encapsulation film layer 400 are short at the overlapping part in the non-display area NA due to the narrow frame design of the display panel.

[0056] It should be noted that in the embodiment, the substrate 100 mainly refers to an array substrate carrying a light emitting device. The display area AA of the substrate 100 corresponds to the part of the substrate 100 first surface 110 for displaying a picture on the display panel, and the non-display area NA of the substrate 100 first surface 110 corresponds to the part of the substrate 100 first surface 110 not for displaying a picture on the display panel. The array substrate includes a substrate 130 and a planar layer 120 arranged on the substrate 130 and located in the display area AA. Meanwhile, the barrier wall part 200 is arranged in the non-display area NA, for blocking the organic film layer 420 in the encapsulation film layer 400 made in the subsequent process, and limiting the flow cutoff position of the flowable organic material.

[0057] The water-blocking layer 300 mainly plays a water-blocking effect, and can be a single film layer structure. In this embodiment, the water-blocking layer 300 is mainly formed by printing or coating solution deposition method, and when the solution deposition method is used, desiccant particles (such as calcium oxide particles, aluminum oxide particles, etc.) are mixed in the flowable organic material. The flowable organic material forms an organic base layer after curing, and the organic base layer is mixed with desiccant particles. It should be noted that the disclosure of the forming method of the water-blocking layer 300 should not be understood as a limitation of the forming method of the water-blocking layer 300. The person skilled in the art can select the forming method of the water-blocking layer 300 according to the specific circumstances, as long as the water-blocking layer 300 forms an organic base layer mixed with desiccant particles. In addition, it can be understood that the organic base layer as a film layer structure with certain water vapor permeability can improve the water-blocking performance of the organic base layer as long as the desiccant particles are formed inside.

[0058] In addition, it can also be understood that the technical solution provided in this embodiment mainly improves the structure of the barrier wall part 200 to form the groove 210 filled with the water-blocking layer 300 to hinder water vapor. Since the barrier wall part 200 is arranged in the non-display area NA, the groove 210 and the water-blocking layer 300 filled in the groove 210 are outside the lateral display area AA. Therefore, whether the packaging film layer 400 is arranged on the substrate 100 in the subsequent process or whether the barrier wall part 200 on the substrate 100 is laminated with the opposite cover plate, the water-blocking layer 300 in the groove 210 can effectively hinder the water vapor from invading along the side of the display panel.

[0059] Please refer again to Figure 2 In this embodiment, the display panel further includes a packaging film layer 400, and the packaging film layer 400 at least includes a first inorganic film layer 410 and a second inorganic film layer 430 arranged on the substrate 100 in sequence away from the substrate 100. Desirably, the barrier wall part 200 is arranged on the first surface 110, and the first inorganic film layer 410 covers the barrier wall part 200. The first inorganic film layer 410 itself plays a certain water vapor blocking effect, and due to the presence of the water-blocking layer 300, it is more difficult for water vapor to invade the display area AA along the overlapping interface between the barrier wall part 200 and the first inorganic film layer 410. Therefore, the water-blocking layer 300 can effectively improve the lateral water vapor blocking ability at the overlapping interface between the first inorganic film layer 410 and the barrier wall part 200.

[0060] In another embodiment, the barrier wall portion 200 is arranged on the side of the first inorganic film layer 410 opposite to the first surface 110, and the second inorganic film layer 430 covers the barrier wall portion 200. In this way, the water-blocking layer 300 can effectively improve the lateral water vapor barrier capability at the interface between the second inorganic film layer 430 and the barrier wall portion 200. The person skilled in the art can select according to the actual needs, and the present application does not make special limitations.

[0061] Further, as shown in Figure 1 In the present embodiment, the barrier wall portion 200 is configured in a shape surrounding the display area AA, and the groove 210 is also configured in a shape surrounding the display area AA, so that the water-blocking layer 300 can protect the display area AA in all lateral directions of the display panel.

[0062] In addition, as can be seen from Figure 1 In the present embodiment, the barrier wall portion 200 is in a closed shape. The person skilled in the art can also set the barrier wall portion 200 in an interrupted shape, for example, in another embodiment, the barrier wall portion 200 includes a plurality of sub-barrier walls arranged in sequence in a direction surrounding the display area AA, and at least part of the sub-barrier walls are formed with the groove 210.

[0063] More specifically, in the present embodiment, the number of barrier wall portions 200 is two, and the two barrier wall portions 200 are arranged in sequence in a direction away from the display area AA, and the two barrier wall portions 200 are provided with the groove 210 filled with the water-blocking layer 300 as described above. However, this should not be understood as a limitation on the number of barrier wall portions 200 and the arrangement of the groove 210. The number of barrier wall portions 200 arranged on the display panel can be only one to reduce the implementation cost. Meanwhile, when there are a plurality of barrier wall portions 200, the groove 210 can be arranged on only one barrier wall portion 200.

[0064] In the present embodiment, the groove 210 is configured in a shape with a constant width along its extension direction. However, in a conventional display panel, the first surface 110 of the substrate 100 and the display area AA are generally in a shape of two rectangles or squares with their side edges parallel. At this time, referring again to Figure 1 It can be seen that the straight-line distance D1 from the side edge 110a of the first surface 110 defining the edge of the substrate 100 to the display area AA is different from the straight-line distance D2 from the corner portion 110b defined by the two side edges intersecting each other to the display area AA. Specifically, the straight-line distance D1 from the side edge 110a to the display area AA is smaller than the straight-line distance D2 from the corner portion 110b to the display area AA.

[0065] Since the linear distance D1 from the side edge 110a to the display area AA is smaller than the linear distance D2 from the corner 110b to the display area AA, when water vapor invades, it is easier for the water vapor to invade into the display area AA along the path from the side edge 110a to the display area AA. If the groove 210 is configured in a shape with a constant width along the extending direction thereof, it is not adaptive to the specific case of water vapor invasion, which can result in a decrease in the reliability of the display panel.

[0066] Correspondingly, please refer to Figure 11 , in another embodiment, a partial view of the first surface 110 on the substrate 100 is shown, for the convenience of display, the groove 210 and the water-blocking layer 300 filling the groove 210 are hidden in Figure 11 . It can be seen that in another embodiment, the groove 210 includes a first groove portion 210a and a second groove portion 210b, the width dimension of the first groove portion 210a is greater than the width dimension of the second groove portion 210b; the first groove portion 210a is between the side edge 110a and the display area AA, and the second groove portion 210b is between the corner 110b and the display area AA. In the technical solution provided in another embodiment, the width of the first groove portion 210a for preventing water vapor erosion from the side edge 110a of the display panel to the display area AA is expanded, which improves the water vapor erosion prevention capability of the entire side edge 110a of the display panel, so that the shape of the groove 210 can be adaptive to the specific case of water vapor erosion. It should be noted here that the width of the groove 210 refers to the dimension of the groove 210 in the direction away from the display area AA.

[0067] Further, as described in the foregoing, a plurality of grooves 210 can be provided on a barrier wall portion 200, for example Figure 12 shown in Figure 12 is a schematic view of the position of the groove 210 on the barrier wall portion 200 in another embodiment, Figure 12 the view angle is towards the first surface 110. It can be seen that in another embodiment, a plurality of grooves 210 are provided on the same barrier wall portion 200. Meanwhile, in this embodiment, for the convenience of forming the water-blocking layer 300 in the groove 210, the plurality of grooves 210 are arranged in sequence in the direction away from the display area AA, and a communication groove 220 is formed between the adjacent two grooves 210 on the part of the barrier wall portion 200 facing away from the first surface 110, the communication groove 220 is in communication with the two grooves 210 on its two sides respectively, and the water-blocking layer 300 extends into the communication groove 220.

[0068] Through the above arrangement, when the water-blocking layer 300 is formed by using the solution deposition method, the flowable organic material can flow in different grooves 210 through the communication groove 220, thereby simplifying the process of forming the water-blocking layer 300, and being more practical.

[0069] The manufacturing method of the display panel provided in the embodiment will be further introduced below, please refer to Figures 3 to 7 in combination with Figure 8 In the embodiment, the manufacturing method of the display panel comprises:

[0070] S100, providing a substrate 100, a display area AA and a non-display area NA surrounding the display area AA are formed on a first surface 110 of the substrate 100, a barrier wall part 200 is arranged on the substrate 100, and the barrier wall part 200 is arranged in the non-display area NA;

[0071] S200, manufacturing a groove 210 on a part of the barrier wall part 200 away from the first surface 110;

[0072] S300, filling a water-blocking layer 300 in the groove 210.

[0073] It should be noted that in the embodiment, the barrier wall part 200 is formed on the substrate 130, that is, the first surface 110 of the substrate 100 is at least partially defined by the substrate 130. The substrate 100 and the barrier wall part 200 can be in direct contact as shown in the embodiment, or in indirect contact (for example, as described above, the barrier wall part 200 is arranged on the side of the first inorganic film layer 410 away from the first surface 110).

[0074] More specifically, please refer to Figure 7 In the embodiment, the barrier wall part 200 comprises a first part 250 and a second part 230 which are sequentially stacked on the substrate 100, the first part 250 and the planar layer 130 in the display area AA are formed by the same film pattern, and the second part 230 and the pixel definition layer in the display area AA are formed by the same film pattern. Therefore, please refer to Figure 9 For the step S200, in the embodiment, the groove 210 is manufactured on the part of the barrier wall part 200 away from the first surface 110, comprising:

[0075] S210, arranging a spacer 240 on the side of the second part 230 away from the first surface 110;

[0076] S220, patterning the spacer 240 to form the groove 210.

[0077] The specific patterning method of the second part 230 can be selected by the implementer according to the actual situation, and the present application does not make special limitation thereon. Among them, the spacer 240 is arranged on the basis of the second part 230, and the groove 210 is formed, which can facilitate the manufacturing of the groove 210.

[0078] In addition, in the embodiment, please refer to Figure 10For step S300, filling the water-blocking layer 300 in the groove 210 specifically includes:

[0079] S310, disposing the flowable organic material containing desiccant particles in the groove 210;

[0080] S320, curing the flowable organic material to form the water-blocking layer 300.

[0081] As described in the foregoing, the technical solution provided by the embodiment mainly adopts a solution deposition method to form the water-blocking layer 300. The implementer can select an ink printing or coating method to arrange the flowable organic material mixed with desiccant particles in the groove 210.

[0082] Embodiment 2

[0083] The main body of the embodiment 2 is a display device including a display panel. The display panel is the display panel described in the embodiment 1 or is made by the display panel manufacturing method described in the embodiment 1. It should be noted that the display device provided by the embodiment is any product or component with display function such as a mobile phone, a TV, a tablet computer, a display, a VR / AR device, a computer, a vehicle-mounted display, etc. The implementer can select according to the own needs, and the present application does not make special limitations.

[0084] The above has described the basic concept. Obviously, the above detailed disclosure is only used as an example and does not constitute a limitation on the present application for those skilled in the art. Although it is not explicitly stated here, those skilled in the art can make various modifications, improvements and corrections to the present application. Such modifications, improvements and corrections are suggested in the present application, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the present application.

[0085] Meanwhile, the present application uses specific words to describe the embodiments of the present application. For example, “one embodiment”, “an embodiment”, and / or “some embodiments” means a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the “an embodiment” or “one embodiment” or “one alternative embodiment” mentioned in different places in the specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be properly combined.

[0086] For simplicity of exposition and to aid in understanding of one or more embodiments of the application, the foregoing description of embodiments of the application has sometimes grouped various features into one embodiment, figure, or description of an embodiment. Such grouping of features into a single embodiment, figure, or description of an embodiment is not meant to limit the subject application to a larger number of features than those expressly recited in the claims. In fact, embodiments of the application have fewer features than all of the features recited in the foregoing description of a single embodiment.

[0087] Some embodiments use numerical values to describe components, quantities of attributes. It should be understood that such numerical values used in the description of embodiments are in some examples modified by the terms "about," "approximately," or "generally." Unless otherwise stated, "about," "approximately," or "generally" indicates ± % variation of the value. Accordingly, numerical parameters in the description and claims should be considered as approximations only, and in some embodiments the numerical parameters are intended to encompass numbers that vary from the indicated number within a range to be expected by one of ordinary skill in the art given the nature of the quantity. In some embodiments, numerical parameters are not provided to the nearest whole number unless the context indicates otherwise. Although numerical ranges and parameters setting forth the broadest scope of the application in some embodiments are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The application is not limited to the specific numerical values set forth in the specific examples.

[0088] Each patent, patent application, publication, and other material cited in this application is hereby incorporated by reference in its entirety, except to the extent that the context indicates otherwise. In the event of inconsistencies between the disclosure of the present application and the disclosure of the incorporated references, the disclosure of the present application shall prevail. It is specifically noted that the description, definitions, and / or terminology used in the incorporated references are not intended to be construed as inconsistent with the description, definitions, and / or terminology used in the present application.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate, a display area and a non-display area surrounding the display area being formed on a first surface of the substrate; a barrier wall portion provided on the substrate, the barrier wall portion being provided in the non-display area, at least one groove being formed on a portion of the barrier wall portion facing away from the first surface; a water-blocking layer filled in the groove, the water-blocking layer being composed of an organic base layer and desiccant particles mixed in the organic base layer; the barrier wall portion is configured in a shape surrounding the display area, and the groove is configured in a shape surrounding the display area; the groove comprises a first groove portion and a second groove portion, a width dimension of the first groove portion being greater than a width dimension of the second groove portion; wherein the first surface of the substrate has side edges defining a periphery thereof and a corner portion defined by two intersecting side edges, the first groove portion being between the side edges and the display area, and the second groove portion being between the corner portion and the display area.

2. The display panel of claim 1, wherein, The groove is configured in a meandering shape.

3. The display panel of claim 1, wherein, The water-blocking layer is formed by depositing a flowable organic material containing desiccant particles, a plurality of grooves are formed on the portion of the barrier wall portion facing away from the first surface, the plurality of grooves are arranged in sequence in a direction away from the display area, a communication groove is formed between two adjacent grooves on the portion of the barrier wall portion facing away from the first surface, the communication groove is in communication with the two grooves on its two sides respectively, and the water-blocking layer extends into the communication groove.

4. The display panel of claim 1, wherein, The barrier wall portion comprises a plurality of sub-barrier wall bodies arranged in sequence in a direction surrounding the display area, and at least part of the sub-barrier wall bodies are formed with the groove.

5. The display panel according to any one of claims 1 to 4, wherein The display panel further comprises: an encapsulation film layer comprising at least a first inorganic film layer and a second inorganic film layer provided in sequence on the substrate in a direction away from the substrate; wherein the barrier wall portion is provided on the first surface, and the first inorganic film layer covers the barrier wall portion; or the first inorganic film layer is provided on the first surface, the barrier wall portion is provided on a surface of the first inorganic film layer facing away from the first surface, and the second inorganic film layer covers the barrier wall portion.

6. A display panel manufacturing method, comprising: The display panel comprises: providing a substrate, a display area and a non-display area surrounding the display area being formed on a first surface of the substrate, and a barrier wall portion provided on the substrate, the barrier wall portion being provided in the non-display area; forming a groove on a portion of the barrier wall portion facing away from the first surface; filling a water-blocking layer in the groove; wherein the barrier wall portion is configured in a shape surrounding the display area, and the groove is configured in a shape surrounding the display area; the water-blocking layer is composed of an organic base layer and desiccant particles mixed in the organic base layer; the groove comprises a first groove portion and a second groove portion, a width dimension of the first groove portion being greater than a width dimension of the second groove portion; wherein the first surface of the substrate has side edges defining a periphery thereof and a corner portion defined by two intersecting side edges, the first groove portion being between the side edges and the display area, and the second groove portion being between the corner portion and the display area. The first side of the substrate has side edges defining its periphery and corners defined by two intersecting side edges, the first recessed portion is between the side edges and the display area, and the second recessed portion is between the corners and the display area.

7. The method for manufacturing a display panel as described in claim 6, characterized in that, The barrier wall portion includes a first portion and a second portion which are sequentially stacked on the substrate, the first portion is formed after the same film layer pattern is formed on the flat layer provided in the display area, and the second portion is formed after the same film layer pattern is formed on the pixel definition layer provided in the display area; The recess is formed on the portion of the barrier wall portion which is away from the first side, including: A spacer is provided on the side of the second portion which is away from the first side; The spacer is patterned to form the recess.

8. The method of claim 6, wherein the step of forming the display panel is performed by a process selected from the group consisting of a printing process, a coating process, a deposition process, and a combination thereof. The water-blocking layer is filled in the recess, including: A flowable organic material containing desiccant particles is provided in the recess; The flowable organic material is cured to form the water-blocking layer.

9. A display device comprising a display panel, characterized by The display panel is the display panel according to any one of claims 1 to 5, or is manufactured by the display panel manufacturing method according to any one of claims 6 to 8.

Images