Display panel and display device

Abstract

The utility model provides a display panel and a display device. The display panel comprises a substrate as well as a first insulating layer, a leveling layer, a first pixel definition layer, a second pixel definition layer and a retaining wall which are arranged on the substrate, the retaining wall is arranged in a non-display area of the display panel, the retaining wall and the leveling layer are arranged on the same side of the substrate, the retaining wall comprises a first blocking piece and a second blocking piece, and the first blocking piece and the second blocking piece are arranged on the same side of the substrate. The material of the first blocking piece is the same as that of the leveling layer, and the material of the second blocking piece is the same as that of the second pixel definition layer; the boundary of the second blocking member shrinks inwards relative to the boundary of the first blocking member, so that the second blocking member completely falls into the first blocking member, the second blocking member is prevented from flowing from the boundary of the first blocking member to the first insulating layer on the lower layer, namely, the thickness of the second blocking member is increased, and the technical problem that the thickness of the retaining wall is reduced is avoided; the blocking capability of the retaining wall on the organic packaging material is ensured, and the technical problem of packaging failure of the display panel is solved.

Description

TECHNICAL FIELD

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

[0002] An organic light-emitting diode (OLED) is a new type of current-driven semiconductor light-emitting device, which is used for controlling carriers and exciting organic materials to emit light for display.

[0003] In the current OLED display panel, a barrier structure is arranged on the periphery of the display panel, and the barrier structure is usually composed of multiple layers of organic materials. Since the organic materials have a certain fluidity, the organic material located at the top layer will flow to the low-land area under the influence of gravity during film formation, so that the top layer of organic material is thinned, the barrier ability of the barrier to the organic encapsulating material is reduced, and the technical problem of encapsulation failure of the display panel is caused. UTILITY MODEL CONTENT

[0004] The present application provides a display panel and a display device to improve the technical problem of encapsulation failure of the existing display panel.

[0005] To solve the above-mentioned scheme, the technical scheme provided by the present application is as follows:

[0006] The present application provides a display panel, which comprises a display area and a non-display area located at least one side of the display area; wherein the display panel comprises:

[0007] a substrate substrate;

[0008] a first insulating layer arranged on one side of the substrate substrate

[0009] a leveling layer arranged on the side of the first insulating layer away from the substrate substrate;

[0010] a first pixel definition layer arranged on the side of the leveling layer away from the substrate substrate;

[0011] a second pixel definition layer arranged on the surface of the first pixel definition layer away from the substrate substrate;

[0012] a barrier wall arranged in the non-display area, and the barrier wall and the leveling layer are arranged on the same side of the substrate substrate, the barrier wall comprises a first barrier piece and a second barrier piece, the material of the first barrier piece is the same as the material of the leveling layer, and the material of the second barrier piece is the same as the material of the second pixel definition layer;

[0013] wherein the boundary of the second barrier piece is inwardly recessed relative to the boundary of the first barrier piece.

[0014] Optionally, the planarization layer includes a first planar layer and a second planar layer, the second planar layer is disposed between the first planar layer and the first pixel definition layer.

[0015] Optionally, the first barrier includes a first sub-portion and a second sub-portion disposed between the first sub-portion and the second barrier, a material of the first sub-portion is the same as a material of the first planar layer, and a material of the second sub-portion is the same as a material of the second planar layer.

[0016] Optionally, a normal projection of the second sub-portion on the substrate is located within a normal projection of the first sub-portion on the substrate, a normal projection of the second barrier on the substrate is located within a normal projection of the second sub-portion on the substrate, and an area of the second barrier is less than an area of the second sub-portion.

[0017] Optionally, an area of the second sub-portion is less than an area of the first sub-portion.

[0018] Optionally, a distance between a boundary of the second barrier and a boundary of the second sub-portion is greater than or equal to a distance between the boundary of the second sub-portion and a boundary of the first sub-portion.

[0019] Optionally, the second sub-portion covers the first sub-portion, and the second sub-portion is in contact with the first insulating layer.

[0020] Optionally, a normal projection of the second barrier on the substrate is located within a normal projection of the second sub-portion on the substrate, and an area of the second barrier is less than an area of the second sub-portion.

[0021] Optionally, a normal projection of the first sub-portion on the substrate is located within a normal projection of the second barrier on the substrate, and an area of the first sub-portion is less than an area of the second barrier.

[0022] Optionally, a distance between a boundary of the second barrier and a boundary of the second sub-portion is greater than or equal to a distance between the boundary of the second barrier and a boundary of the first sub-portion.

[0023] Optionally, a thickness of the second pixel definition layer is greater than a thickness of the first pixel definition layer.

[0024] The application further provides a display device including the display panel.

[0025] Other features and advantages of the present application will be illustrated in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0026] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0027] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0028] Figure 1 A simplified structural diagram of a display panel provided in an embodiment of the present application;

[0029] Figure 2 A diagram of the film layers of a display panel provided in an embodiment of the present application;

[0030] Figure 3 for Figure 1 Cross-section of part of the membrane layer in the middle section MM;

[0031] Figure 4 A first structural diagram of the second retaining wall of the display panel provided in an embodiment of the present application;

[0032] Figure 5 A second structural diagram of the second retaining wall of the display panel provided in an embodiment of the present application;

[0033] Figure 6 This is a third structural diagram of the second retaining wall of the display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0035] See also Figures 1 to 6 The present application proposes a display panel 100, which includes a base substrate 10 and a first insulating layer IL1, a leveling layer PLN, a first pixel definition layer 310, a second pixel definition layer 320 and a retaining wall 80 arranged on the base substrate 10, the leveling layer PLN is arranged on the side of the first insulating layer IL1 away from the base substrate 10, the first pixel definition layer 310 is arranged on the side of the leveling layer PLN away from the base substrate 10, and the second pixel definition layer 320 is arranged on the surface of the first pixel definition layer 310 away from the base substrate 10.

[0036] In the embodiment, the barrier wall 80 is arranged in the non-display area of the display panel 100, and the barrier wall 80 and the planarization layer PLN are arranged on the same side of the substrate 10, the barrier wall 80 includes a first blocking piece 821 and a second blocking piece 822, the material of the first blocking piece 821 is the same as the material of the planarization layer PLN, and the material of the second blocking piece 822 is the same as the material of the second pixel definition layer 320.

[0037] In the embodiment, the boundary of the second blocking piece 822 is inwardly recessed relative to the boundary of the first blocking piece 821.

[0038] In the embodiment, the boundary of the second blocking piece 822 is inwardly recessed relative to the boundary of the first blocking piece 821, so that the second blocking piece 822 is completely within the first blocking piece 821, avoiding the second blocking piece 822 flowing from the boundary of the first blocking piece 821 to the first insulating layer IL1 below, that is, increasing the thickness of the second blocking piece 822, avoiding the technical problem of the thickness of the barrier wall 80 becoming smaller, ensuring the blocking ability of the barrier wall 80 to the organic packaging material, and improving the technical problem of packaging failure of the display panel 100.

[0039] The technical solutions of the present application will be described in detail in combination with specific embodiments.

[0040] Please refer to Figure 1 , the display panel 100 includes a display area AA and a non-display area NA arranged adjacent to the display area AA. Optionally, the non-display area NA surrounds the display area AA, so that the display area AA is surrounded by the non-display area NA. The display area AA is an area in the display panel 100 for displaying functions, and a plurality of sub-pixels PX inside the display area AA are arranged to realize the display function. The non-display area NA can be a frame area of the display panel 100, and functional components assisting the sub-pixels PX in the display area AA to display can be arranged inside the non-display area NA.

[0041] Please refer to Figure 1 , the lower side of the display area AA is provided with a binding terminal, which can be connected with an external circuit, and the binding terminal transmits signals input by the external circuit to the data wire, so as to drive the display panel 100 to display a picture. For example, the binding terminal can be connected with a chip or a chip on film, etc., for providing power supply and driving signals for the display panel 100.

[0042] Please refer to Figure 2 , the display panel 100 can include a substrate 10, an array layer 20 arranged on the substrate 10, a pixel layer 30 arranged on the array layer 20, a light-emitting functional layer 40 and an encapsulation layer 50, a color film layer 60 arranged on the encapsulation layer 50, and a cover layer 70 arranged on the color film layer 60.

[0043] In the embodiment, the material of the substrate 10 can be glass, quartz or polyimide, etc. For example, when the display panel 100 is a flexible panel, the material of the substrate 10 can be a flexible material such as polyimide, or composed of a laminated film layer of a flexible material and an inorganic material. When the display panel 100 is a rigid panel, the material of the substrate 10 can be a rigid material such as glass or quartz.

[0044] In the embodiment, referring to FIG. 1, Figure 2 The array layer 20 can include a plurality of thin film transistors, which can be etch-stop type, back channel etch type, or divided into bottom-gate thin film transistors, top-gate thin film transistors, etc. according to the position of the gate and the active layer 201, without limitation. For example, Figure 2 The thin film transistor shown in FIG. 1 is a top-gate thin film transistor, which can include an active layer 201 disposed on the substrate 10, a first gate insulating layer 202 disposed on the active layer 201, a first gate electrode layer GE1 disposed on the first gate insulating layer 202, a second gate insulating layer 203 disposed on the first gate electrode layer GE1, a second gate electrode layer GE2 disposed on the second gate insulating layer 203, a first interlayer insulating layer 204 disposed on the second gate electrode layer GE2, a second interlayer insulating layer 205 disposed on the first interlayer insulating layer 204, a first source-drain electrode layer SD1 disposed on the second interlayer insulating layer 205, a second insulating layer IL2 disposed on the first source-drain electrode layer SD1, a first planarization layer 206 disposed on the second insulating layer IL2, a second source-drain electrode layer SD2 disposed on the first planarization layer 206, a second planarization layer 207 disposed on the second source-drain electrode layer SD2, and a third planarization layer 208 disposed on the second planarization layer 207.

[0045] It should be noted that the number of source-drain electrode layers can be set according to the wiring space requirement, for example, the source-drain electrode layer of the present application can be two layers; and the number of gate electrode layers is set according to the wiring space and capacitance requirement, for example, the gate electrode layer of the present application can be two layers.

[0046] It should be noted that the first insulating layer IL1 of the present application can be at least one of the first gate insulating layer 202, the second gate insulating layer 203, the first interlayer insulating layer 204 and the second interlayer insulating layer 205, and the first gate insulating layer 202, the second gate insulating layer 203, the first interlayer insulating layer 204 and the second interlayer insulating layer 205 are all inorganic materials composed of nitrogen, silicon, oxygen, aluminum and other elements.

[0047] It should be noted that the planarization layer PLN of the present application is arranged to ensure the flatness of the film layer, and the number of planarization layers PLN is arranged according to the requirement of flatness, for example, the planarization layer PLN of the present application can be three flat layers.

[0048] Referring to Figure 2 , the pixel layer 30 can include a first pixel definition layer 310 and a second pixel definition layer 320, the first pixel definition layer 310 is arranged on the side of the first insulating layer IL1 away from the substrate 10, and the second pixel definition layer 320 is arranged on the surface of the first pixel definition layer 310 away from the substrate 10.

[0049] It should be noted that since the light-emitting layer 402 of the present application is prepared by inkjet printing process, in order to reduce the precision of inkjet printing, the first pixel definition layer 310 of the present application can include a plurality of first pixel dams 311 staggered in horizontal and vertical directions, and the plurality of first pixel dams 311 staggered in horizontal and vertical directions are surrounded to form a plurality of pixel openings corresponding to the sub-pixels, and the second pixel definition layer 320 includes a plurality of second pixel dams 321 in horizontal or vertical direction, and the plurality of sub-pixels between adjacent two second pixel dams 321 are of the same color, so that in the inkjet printing process, the plurality of sub-pixels between adjacent two second pixel dams 321 can be printed simultaneously along the direction of the second pixel dam 321, thereby reducing the precision of inkjet printing and improving the process efficiency.

[0050] In the present embodiment, since the second pixel dam 321 mainly plays a role of isolating sub-pixels of different colors, the thickness of the second pixel dam 321 of the present application can be greater than the thickness of the first pixel dam 311.

[0051] It should be noted that the materials of the first flat layer 206, the second flat layer 207, the third flat layer 208, the first pixel definition layer 310 and the second pixel definition layer 320 can all be positive organic materials.

[0052] Referring to Figure 2 and Figure 3 , the light-emitting functional layer 40 can include an anode layer 401 arranged on the third flat layer 208, a light-emitting layer 402 arranged on the anode layer 401, and a cathode layer 403 arranged on the light-emitting layer 402. The anode layer 401 includes a plurality of anodes corresponding one-to-one to the pixel openings, and the light-emitting layer 402 can include a plurality of light-emitting pixels corresponding one-to-one to the plurality of anodes.

[0053] Referring to Figure 2 and Figure 3The encapsulation layer 50 is arranged on the pixel layer 30 and continuously covers the plurality of pixel openings and the plurality of light-emitting pixels; the encapsulation layer 50 comprises a first inorganic encapsulation layer 501, an organic encapsulation layer 502 and a second inorganic encapsulation layer 503 which are sequentially arranged.

[0054] In the embodiment, the first inorganic encapsulation layer 501 and / or the second inorganic encapsulation layer 503 extend from the display area AA to the non-display area NA, and the first inorganic encapsulation layer 501 and / or the second inorganic encapsulation layer 503 are overlapped on the barrier structure, and the organic encapsulation layer 502 extends to the non-display area NA and is cut off at the barrier structure.

[0055] Please refer to Figure 2 The color film layer 60 comprises a plurality of color resist 610 and a light-shielding unit 620 arranged on both sides of the color resist 610, and one color resist 610 corresponds to one light-emitting pixel.

[0056] Please refer to Figure 2 The cover plate layer 70 is arranged on the side of the color film layer 60 away from the substrate 10, and the cover plate layer 70 can be a glass cover plate or directly formed on the color film layer 60.

[0057] In the embodiment, the display panel 100 can comprise at least one barrier 80; please refer to Figure 3 The display panel 100 comprises a first barrier 810 and a second barrier 820, the first barrier 810 is arranged close to the display area AA of the display panel 100, and the second barrier 820 is arranged away from the display area AA of the display panel 100, the thickness of the first barrier 810 and the second barrier 820 can be designed differently, for example, the thickness of the second barrier 820 can be greater than the thickness of the first barrier 810; the first barrier 810 and the second barrier 820 can be formed in the same mask process as at least one of the planar layer and the pixel definition layer in the array layer 20, and the following embodiment takes the second barrier 820 as an example for description.

[0058] Please refer to Figure 4 and Figure 5The second blocking wall 820 may include a first blocking member 821 and a second blocking member 822, the first blocking member 821 including a first sub-portion 821a and a second sub-portion 821b arranged between the first sub-portion 821a and the second blocking member 822, the first sub-portion 821a may be prepared in the process of preparing the first flat layer 206, the second sub-portion 821b may be prepared in the process of preparing the second flat layer 207, and the second blocking member 822 may be prepared in the process of the second pixel definition layer 320 or the first pixel definition layer 310, that is, the material of the first sub-portion 821a is the same as the material of the first flat layer 206, and the material of the second sub-portion 821b is the same as the material of the second flat layer 207.

[0059] In this embodiment, since the thickness of the second pixel definition layer 320 is greater than that of the first pixel definition layer 310 , in order to increase the thickness of the retaining wall as much as possible, the second blocking member 822 of the present application can be prepared in the process of the second pixel definition layer 320 .

[0060] In this embodiment, since the third flat layer 208 is arranged on the second flat layer 207, the third flat layer 208 is arranged to further adjust the flatness of the film layer. Therefore, the thickness of the third flat layer 208 of this application can be smaller than the thickness of the second flat layer 207 and the first flat layer 206; and in order to increase the thickness of the retaining wall as much as possible, the first blocking member 821 of this application can be prepared in the process of the second flat layer 207 and the first flat layer 206.

[0061] In this embodiment, the present application uses three layers of organic materials to prepare the second blocking wall Dm2, and the boundary of the second blocking member 822 is retracted relative to the boundary of the second sub-portion 821b, that is, the orthographic projection of the second blocking member 822 on the base substrate 10 is located within the orthographic projection of the second sub-portion 821b on the base substrate 10.

[0062] exist Figure 4 In the structure, the orthographic projection of the second sub-portion 821b on the base substrate 10 is located within the orthographic projection of the first sub-portion 821a on the base substrate 10, the orthographic projection of the second blocking member 822 on the base substrate 10 is located within the orthographic projection of the second sub-portion 821b on the base substrate 10, and the area of ​​the second blocking member 822 is smaller than the area of ​​the second sub-portion 821b.

[0063] In the embodiment, the first sub-part 821a and the second sub-part 821b can completely overlap, that is, the area of the second sub-part 821b can be equal to the area of the first sub-part 821a; or the area of the second sub-part 821b is smaller than the area of the first sub-part 821a, and the boundary of the second sub-part 821b can be inwardly recessed relative to the boundary of the first sub-part 821a.

[0064] For example, in the structure of the display panel 100, Figure 4 the first sub-part 821a, the second sub-part 821b and the second barrier 822 are arranged in a stepped manner in the thickness direction of the display panel 100, that is, the boundary of the second barrier 822 is inwardly recessed relative to the boundary of the second sub-part 821b, and the boundary of the second sub-part 821b can be inwardly recessed relative to the boundary of the first sub-part 821a.

[0065] In the structure of the display panel 100, Figure 4 the distance between the boundary of the second barrier 822 and the boundary of the second sub-part 821b can be equal to the distance between the boundary of the second sub-part 821b and the boundary of the first sub-part 821a; or the distance between the boundary of the second barrier 822 and the boundary of the second sub-part 821b can be greater than the distance between the boundary of the second sub-part 821b and the boundary of the first sub-part 821a.

[0066] For example, for a 27-inch display panel 100, the width L3 of the second barrier 822 can range from 18 μm to 22 μm, the width L2 of the second sub-part 821b can range from 38 μm to 42 μm, and the width L1 of the first sub-part 821a can range from 58 μm to 62 μm, that is, the distance between the boundary of the second barrier 822 on one side and the boundary of the second sub-part 821b on one side can range from 8 μm to 12 μm, and the distance between the boundary of the second sub-part 821b on one side and the boundary of the first sub-part 821a on one side can range from 8 μm to 12 μm; and for a 21.6-inch display panel 100, the distance between the boundary of the second barrier 822 on one side and the boundary of the second sub-part 821b on one side can range from 4 μm to 6 μm, and the distance between the boundary of the second sub-part 821b on one side and the boundary of the first sub-part 821a on one side can range from 4 μm to 6 μm.

[0067] In the structure of the display panel 100, Figure 5 and Figure 6 the second sub-part 821b covers the first sub-part 821a, and the second sub-part 821b is in contact with the first insulating layer IL1, the orthographic projection of the second barrier 822 on the substrate 10 is located within the orthographic projection of the second sub-part 821b on the substrate 10, and the area of the second barrier 822 is smaller than the area of the second sub-part 821b.

[0068] In this embodiment, the orthographic projection of the first sub-portion 821a of the present application on the base substrate 10 is located within the orthographic projection of the second blocking member 822 on the base substrate 10 , and the area of ​​the first sub-portion 821a is smaller than the area of ​​the second blocking member 822 .

[0069] and Figure 4 Compared with the structure of Figure 5 and Figure 6 The width of the first sub-portion 821a is reduced and the width of the second sub-portion 821b is increased, so that the second barrier 822 has a sufficient leveling width on the second sub-portion 821b, thereby preventing the second barrier 822 from overflowing from the boundary of the second sub-portion 821b onto the first insulating layer IL1.

[0070] exist Figure 5 and Figure 6 In the structure, the distance between the boundary of the second blocking member 822 and the boundary of the second sub-portion 821b can be equal to the distance between the boundary of the second blocking member 822 and the boundary of the first sub-portion 821a; or, the distance between the boundary of the second blocking member 822 and the boundary of the second sub-portion 821b can be greater than the distance between the boundary of the second blocking member 822 and the boundary of the first sub-portion 821a.

[0071] For example, for a 27-inch display panel 100, the width L1 of the first sub-portion 821a may range from 18 μm to 22 μm, the width L3 of the second blocking member 822 may range from 36 μm to 44 μm, and the width L2 of the second sub-portion 821b may range from 58 μm to 62 μm. That is, the distance between the boundary of the second blocking member 822 on one side and the boundary of the second sub-portion 821b on one side, and the distance between the boundary of the second blocking member 822 on one side and the boundary of the first sub-portion 821a on one side may both range from 7 μm to 13 μm.

[0072] For a 21.6-inch display panel 100, the width L1 of the first sub-portion 821a can range from 18 μm to 22 μm, the width L3 of the second blocking member 822 can range from 28 μm to 32 μm, and the width L2 of the second sub-portion 821b can range from 38 μm to 42 μm. That is, the distance range between the boundary of the second blocking member 822 on one side and the boundary of the second sub-portion 821b on one side, and the distance range between the boundary of the second blocking member 822 on one side and the boundary of the first sub-portion 821a on one side can both range from 4 μm to 6 μm.

[0073] exist Figure 5 and Figure 6 In the structure of Figure 5 The thickness of the second sub-section 821b is less thanFigure 6 The thickness of the second sub-section 821b in the embodiment of the present invention is different, and the difference in the leveling of the organic material causes the difference in the thickness. Figure 5 The surface of the second sub-portion 821b away from the first sub-portion 821a is a plane, Figure 6 The surface of the second sub-portion 821b away from the first sub-portion 821a is a convex surface.

[0074] exist Figures 4 to 6 In the structure, the present application reduces the width of the second barrier 822 or increases the width of the second sub-portion 821b so that the second barrier 822 has a sufficient leveling width, thereby preventing the second barrier 822 from flowing from the boundary of the first barrier 821 to the lower first insulating layer IL1, that is, increasing the thickness of the second barrier 822, avoiding the technical problem of the barrier wall thickness becoming smaller.

[0075] It should be noted that the display device of the present application can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc.

[0076] The present application provides a display panel and a display device; the display panel includes a base substrate and a first insulating layer, a leveling layer, a first pixel definition layer, a second pixel definition layer and a retaining wall arranged on the base substrate, the retaining wall is arranged at the periphery of the display panel, and the retaining wall and the leveling layer are arranged on the same side of the base substrate, the retaining wall includes a first barrier and a second barrier, the material of the first barrier is the same as the material of the leveling layer, and the material of the second barrier is the same as the material of the second pixel definition layer; the boundary of the second barrier of the present application is retracted relative to the boundary of the first barrier, so that the second barrier falls completely into the first barrier, avoiding the second barrier from flowing from the boundary of the first barrier to the lower first insulating layer, that is, increasing the thickness of the second barrier, avoiding the technical problem of the retaining wall thickness becoming smaller, ensuring the retaining wall's blocking ability for the organic packaging material, and improving the technical problem of display panel packaging failure.

[0077] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0078] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0079] The embodiments, implementation manners and related technical features of the present application can be combined with each other without conflict.

[0080] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present application without departing from the technical solution content of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A display panel, characterized in that: The display panel comprises a display area and a non-display area located on at least one side of the display area; wherein the display panel comprises: substrate; A first insulating layer is provided on one side of the base substrate a leveling layer, provided on a side of the first insulating layer away from the base substrate; A first pixel definition layer is provided on a side of the leveling layer away from the base substrate; a second pixel definition layer, disposed on a surface of the first pixel definition layer away from the base substrate; a retaining wall disposed in the non-display area, and the retaining wall and the leveling layer are disposed on the same side of the base substrate, the retaining wall comprising a first retaining member and a second retaining member, the first retaining member being made of the same material as the leveling layer, and the second retaining member being made of the same material as the second pixel definition layer; Wherein, the boundary of the second blocking member is retracted relative to the boundary of the first blocking member.

2. The display panel according to claim 1, wherein: The leveling layer includes a first flat layer and a second flat layer, wherein the second flat layer is provided between the first flat layer and the first pixel definition layer; The first blocking member includes a first sub-portion and a second sub-portion provided between the first sub-portion and the second blocking member. The material of the first sub-portion is the same as that of the first flat layer, and the material of the second sub-portion is the same as that of the second flat layer.

3. The display panel according to claim 2, wherein: The orthographic projection of the second sub-portion on the base substrate is located within the orthographic projection of the first sub-portion on the base substrate, the orthographic projection of the second blocking member on the base substrate is located within the orthographic projection of the second sub-portion on the base substrate, and the area of ​​the second blocking member is smaller than that of the second sub-portion.

4. The display panel according to claim 3, wherein: An area of ​​the second sub-portion is smaller than an area of ​​the first sub-portion.

5. The display panel according to claim 4, wherein: The distance between the boundary of the second blocking member and the boundary of the second sub-section is greater than or equal to the distance between the boundary of the second sub-section and the boundary of the first sub-section.

6. The display panel according to claim 2, wherein: The second sub-portion covers the first sub-portion, and the second sub-portion is in contact with the first insulating layer; The orthographic projection of the second blocking member on the base substrate is located within the orthographic projection of the second sub-portion on the base substrate, and the area of ​​the second blocking member is smaller than the area of ​​the second sub-portion.

7. The display panel according to claim 6, wherein: An orthographic projection of the first sub-portion on the base substrate is located within an orthographic projection of the second blocking member on the base substrate, and an area of ​​the first sub-portion is smaller than an area of ​​the second blocking member.

8. The display panel according to claim 7, wherein: The distance between the boundary of the second blocking member and the boundary of the second sub-portion is greater than or equal to the distance between the boundary of the second blocking member and the boundary of the first sub-portion.

9. The display panel according to any one of claims 1 to 8, characterized in that: The thickness of the second pixel definition layer is greater than the thickness of the first pixel definition layer.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 9.

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