Display panel, manufacturing method thereof and display device

Abstract

The application provides a display panel and a manufacturing method thereof, and a display device, and relates to the technical field of display, and aims to solve the problems of orange peel mura and overflow of the packaging layer in the display product. In the display panel, the second blocking dam is located between the first blocking dam and the display area; the first inorganic packaging layer comprises at least two sub-film layers arranged in a stack, the first sub-film layer farthest from the substrate of the display panel has hydrophilicity, the second sub-film layer adjacent to the first sub-film layer has hydrophobicity, the second sub-film layer covers the display area and the non-display area, the first sub-film layer covers the display area and covers the non-display area between the first blocking dam and the display area, and the orthographic projection of the first sub-film layer on the substrate does not overlap with the orthographic projection of the first blocking dam on the substrate; the organic packaging layer is located on the side of the first inorganic packaging layer away from the substrate, and is located on the side of the boundary of the first blocking dam away from the display area towards the display area.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a display panel, its manufacturing method, and a display device. Background Technology

[0002] With the continuous development of display technology, the application fields of display products are becoming increasingly wide, placing higher demands on the manufacturing and yield rates of display products. Taking organic light-emitting diode (OLED) displays as an example, the organic light-emitting materials and reactive metal electrodes in these products are easily corroded by internal and external moisture and oxygen, resulting in oxidation reactions that cause the pixels in the display product to shrink or stop emitting light. Therefore, display products are generally encapsulated for protection. Currently, the encapsulation layers in display products typically include stacked inorganic and organic encapsulation layers. The inorganic encapsulation layer can block moisture and oxygen, while the organic encapsulation layer can meet the flatness requirements of the encapsulation layer. However, in the above-mentioned encapsulation layer structure, the organic encapsulation layer often suffers from orange peel mura and overflow problems. Summary of the Invention

[0003] The purpose of this invention is to provide a display panel and its manufacturing method, as well as a display device, to solve the problems of orange peel and overflow in the encapsulation layer of display products.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A first aspect of the present invention provides a display panel including a display area and a non-display area; the display panel further includes:

[0006] A first blocking dam and a second blocking dam are located in the non-display area, and the second blocking dam is located between the first blocking dam and the display area;

[0007] A first inorganic encapsulation layer includes at least two sub-film layers stacked together. The first sub-film layer, located furthest from the display panel on the substrate, is hydrophilic, and the second sub-film layer adjacent to the first sub-film layer is hydrophobic. The second sub-film layer covers the display area and the non-display area. The first barrier dam and the second barrier dam are both located between the second sub-film layer and the substrate. The first sub-film layer covers the display area and the non-display area located between the first barrier dam and the display area. The orthographic projection of the first sub-film layer on the substrate does not overlap with the orthographic projection of the first barrier dam on the substrate.

[0008] An organic encapsulation layer is located on the side of the first inorganic encapsulation layer facing away from the substrate, and on the side of the first barrier dam away from the display area facing the display area.

[0009] Optionally, the display panel further includes: a plurality of third blocking dams located between the first blocking dam and the second blocking dam, the plurality of third blocking dams being arranged at intervals along the extension direction of the first blocking dam.

[0010] Optionally, the third barrier includes a blocking portion and a connecting portion coupled together. The connecting portion is located between the blocking portion and the first barrier, and is coupled to both the blocking portion and the first barrier. The extending direction of the blocking portion intersects with the extending direction of the connecting portion.

[0011] Optionally, the display panel further includes an aperture area; the non-display area includes a first sub-non-display area, which surrounds the aperture area; the first blocking dam and the second blocking dam are located in the first sub-non-display area, and both the first blocking dam and the second blocking dam surround the aperture area;

[0012] The length W of the blocking portion along its own extending direction T Satisfy: 1≤W T ≤π(d+2d T ) / 3;

[0013] Where d is the diameter of the circular region enclosed by the boundary of the first barrier dam away from the borehole area; d T The length of the connecting portion along its own extending direction.

[0014] Optionally, the number n of the third blocking dams set on the display panel satisfies: 3≤n≤π(d+2d) T ) / W T .

[0015] Optionally, the blocking portion is an arc-shaped portion that bends toward the first blocking dam and has the same curvature as the adjacent portion of the first blocking dam; or, the arc-shaped portion bends away from the first blocking dam.

[0016] Optionally, the non-display area includes a second sub-non-display area that surrounds the display area; the first barrier and the second barrier are located in the second sub-non-display area.

[0017] Optionally, the blocking part is a straight strip.

[0018] Based on the above-described display panel technical solution, a second aspect of the present invention provides a display device including the above-described display panel.

[0019] Based on the above-described technical solution for the display panel, a third aspect of the present invention provides a method for manufacturing a display panel, used to manufacture the aforementioned display panel, wherein the display panel includes a display area and a non-display area; the manufacturing method includes:

[0020] A first barrier and a second barrier are constructed, the first barrier and the second barrier being located in the non-display area, and the second barrier being located between the first barrier and the display area;

[0021] At least two inorganic encapsulation material sub-film layers are stacked on the side of the first and second barrier dams facing away from the substrate. The first inorganic encapsulation material sub-film layer, furthest from the substrate, is hydrophilic, and the second inorganic encapsulation material sub-film layer adjacent to the first inorganic encapsulation material layer is hydrophobic. The first inorganic encapsulation material sub-film layer is patterned to form a first sub-film layer. The first sub-film layer covers the display area and the non-display area located between the first barrier dam and the display area. The orthographic projection of the first sub-film layer on the substrate does not overlap with the orthographic projection of the first barrier dam on the substrate. The second inorganic encapsulation material sub-film layer is formed to form a second sub-film layer, which covers both the display area and the non-display area.

[0022] An organic encapsulation layer is fabricated on the side of the first inorganic encapsulation layer facing away from the substrate, and on the side of the first barrier dam away from the display area facing the display area.

[0023] In the technical solution provided by the present invention, the first inorganic encapsulation layer includes at least two sub-film layers stacked together. The first sub-film layer, which is furthest from the display panel, is hydrophilic, and the second sub-film layer adjacent to the first sub-film layer is hydrophobic. The second sub-film layer covers the display area and the non-display area. The first sub-film layer covers the display area and the non-display area located between the first barrier dam and the display area. The orthographic projection of the first sub-film layer on the substrate does not overlap with the orthographic projection of the first barrier dam on the substrate.

[0024] This configuration allows the removal of the hydrophilic first sub-film layer above the first barrier dam in the first inorganic encapsulation layer, while retaining the hydrophobic second sub-film layer above the first barrier dam. During the fabrication of the organic encapsulation layer, when the organic encapsulation material flows to the first barrier dam, the second sub-film layer increases the resistance to the continued flow of the organic encapsulation material towards the side of the first barrier dam away from the display area. This effectively confines the organic encapsulation material to the side of the first barrier dam facing the display area, preventing overflow problems during the fabrication of the organic encapsulation layer.

[0025] Meanwhile, the hydrophilic first sub-film layer covers the display area and the non-display area located between the first barrier dam and the display area, making the first inorganic encapsulation layer more level, and giving the subsequent organic encapsulation layer formed on the first sub-film layer better level, effectively preventing the organic encapsulation layer from producing orange peel mura.

[0026] Moreover, the hydrophobic second sub-film layer can completely cover the display area and the non-display area, ensuring the good encapsulation effect of the first inorganic encapsulation layer. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0029] Figure 2 A cross-sectional schematic diagram of the hole area and the first sub-non-display area of ​​the display panel provided in an embodiment of the present invention;

[0030] Figure 3 These are schematic diagrams of the structures of various barrier dams provided in the embodiments of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the third barrier dam provided in an embodiment of the present invention. Detailed Implementation

[0032] To further illustrate the display panel, its manufacturing method, and the display device provided in the embodiments of the present invention, a detailed description is provided below with reference to the accompanying drawings.

[0033] Please see Figures 1 to 3 This invention provides a display panel, including a display area AA and a non-display area (such as a first sub-non-display area ND1 and a second sub-non-display area ND2); the display panel further includes:

[0034] The first blocking dam Dam1 and the second blocking dam Dam2 are located in the non-display area, and the second blocking dam Dam2 is located between the first blocking dam Dam1 and the display area AA.

[0035] A first inorganic encapsulation layer 30 includes at least two sub-film layers stacked together. The first sub-film layer 301, which is furthest from the display panel on the substrate 10, is hydrophilic, and the second sub-film layer 302, which is adjacent to the first sub-film layer 301, is hydrophobic. The second sub-film layer 302 covers the display area AA and the non-display area. The first barrier dam Dam1 and the second barrier dam Dam2 are both located between the second sub-film layer 302 and the substrate 10. The first sub-film layer 301 covers the display area AA and the non-display area located between the first barrier dam Dam1 and the display area AA. The orthographic projection of the first sub-film layer 301 on the substrate 10 does not overlap with the orthographic projection of the first barrier dam Dam1 on the substrate 10.

[0036] An organic encapsulation layer 40 is located on the side of the first inorganic encapsulation layer 30 facing away from the substrate, and on the side of the first barrier dam Dam1 away from the boundary of the display area AA and facing the display area AA.

[0037] For example, the substrate 10 includes a glass substrate, a PI substrate, etc., but is not limited to these.

[0038] For example, the display panel includes a display area AA and a non-display area, the non-display area including a first sub-non-display area ND1 and a second sub-non-display area ND2; the display panel also includes a hole area, the first sub-non-display area ND1 surrounding the hole area; the second sub-non-display area ND2 surrounding the display area AA; at least a portion of the display area AA is located between the first sub-non-display area ND1 and the second sub-non-display area ND2.

[0039] For example, the display area AA includes multiple sub-pixels arranged in an array to realize the display function of the display panel. The first sub-non-display area ND1 is used to place sensing elements such as cameras; the second sub-non-display area ND2 is used to place control circuits and electronic components. The display area AA and the second sub-non-display area ND2 can be rectangular, circular, elliptical, or spline-shaped areas, wherein the second sub-non-display area ND2 can place shift register circuits, auxiliary structures (such as crack barrier dams), flexible circuit boards, driver chips, etc. Both the display area AA and the non-display area ND can have bending, folding, and curling capabilities. In the first sub-non-display area ND1, some partition structures 50 can also be arranged on the side of the first barrier dam Dam1 facing the hole area to further improve the encapsulation effect.

[0040] For example, the first blocking dam Dam1 and the second blocking dam Dam2 are located in the first sub-non-display area ND1; and / or, the first blocking dam Dam1 and the second blocking dam Dam2 are located in the second sub-non-display area ND2. In the first sub-non-display area ND1, both the first blocking dam Dam1 and the second blocking dam Dam2 surround the hole area, with the first blocking dam Dam1 located between the second blocking dam Dam2 and the hole area, and the second blocking dam Dam Dam2 located between the first blocking dam Dam1 and the display area AA. In the second sub-non-display area ND2, both the first blocking dam Dam1 and the second blocking dam Dam2 surround the display area AA, with the second blocking dam Dam Dam2 located between the first blocking dam Dam1 and the display area AA.

[0041] For example, the display panel includes a first inorganic encapsulation layer 30, an organic encapsulation layer 40 and a second inorganic encapsulation layer stacked sequentially in a direction away from the substrate, wherein the first barrier dam Dam1 and the second barrier dam Dam2 are used to block the overflow of the organic encapsulation layer 40.

[0042] For example, the first inorganic encapsulation layer 30 includes at least two sub-film layers stacked together; for example, along the direction close to the substrate, the first inorganic encapsulation layer 30 includes a first sub-film layer 301, a second sub-film layer 302 and other sub-film layers stacked together in sequence, wherein the first sub-film layer 301 is hydrophilic, the second sub-film layer 302 is hydrophobic, and the hydrophilicity or hydrophobicity of the other sub-film layers is not limited.

[0043] For example, the second sub-film layer 302 completely covers the display area AA and the non-display area. The second sub-film layer 302 mainly serves to prevent the intrusion of water vapor and oxygen. The first barrier dam Dam1 and the second barrier dam Dam2 are both located between the second sub-film layer 302 and the substrate. The first sub-film layer 301 completely covers the display area AA and the non-display area located between the first barrier dam Dam1 and the display area AA. The orthographic projection of the first sub-film layer 301 on the substrate does not overlap with the orthographic projection of the first barrier dam Dam1 on the substrate. Whether or not the first sub-film layer 301 is provided for the area of ​​the first barrier dam Dam1 away from the display area AA is not specifically limited. The function of the first sub-film layer 301 is to make the first inorganic encapsulation layer 30 more level.

[0044] For example, the first sub-film layer 301 includes a SiO sub-film layer, the second sub-film layer 302 includes a SiN sub-film layer, and the other sub-film layers include a SiNO sub-film layer. The SiN sub-film layer has better encapsulation performance and is more hydrophobic than the SiO sub-film layer. The hydrophilicity of the SiO sub-film layer makes the first inorganic encapsulation layer 30 more leveling and can prevent orange peel mura. Patterning removes the SiO sub-film layer located above the first barrier dam Dam1, while retaining the SiN and SiNO sub-film layers. This ensures that the first inorganic encapsulation layer 30 as a whole still has encapsulation performance. At the same time, the surface of the first inorganic encapsulation layer 30 above the first barrier dam Dam1 is more hydrophobic, which can prevent the subsequently fabricated organic encapsulation layer 40 (Ink jet printing, or IJP film layer) from overflowing over the first barrier dam Dam1.

[0045] For example, the materials of the sub-film layers in the first inorganic encapsulation layer 30 include: inorganic insulating materials such as silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, titanium oxide, tantalum oxide, zinc oxide, hafnium oxide, and zirconium oxide. The first inorganic encapsulation layer 30 may include a double-layer or multi-layer stacked structure of the above materials, such as having a stacked structure similar to SiNX / SiO2 or SiO2 / SiNX / SiO2.

[0046] As can be seen from the specific structure of the display panel described above, in the display panel provided in the embodiments of the present invention, the first inorganic encapsulation layer 30 includes at least two sub-film layers stacked together. The first sub-film layer 301, which is furthest from the substrate of the display panel, is hydrophilic, and the second sub-film layer 302, which is adjacent to the first sub-film layer 301, is hydrophobic. The second sub-film layer 302 covers the display area AA and the non-display area. The first sub-film layer 301 covers the display area AA and the non-display area located between the first barrier dam Dam1 and the display area AA. The orthographic projection of the first sub-film layer 301 on the substrate does not overlap with the orthographic projection of the first barrier dam Dam1 on the substrate.

[0047] This configuration allows the removal of the hydrophilic first sub-film layer 301 above the first barrier dam Dam1 in the first inorganic encapsulation layer 30, while retaining the hydrophobic second sub-film layer 302 above the first barrier dam Dam1. During the fabrication of the organic encapsulation layer 40, when the organic encapsulation material flows to the first barrier dam Dam1, the second sub-film layer 302 increases the resistance to the continued flow of the organic encapsulation material towards the side of the first barrier dam Dam1 away from the display area AA. This effectively confines the organic encapsulation material to the side of the first barrier dam Dam1 facing the display area AA, preventing overflow problems during the fabrication of the organic encapsulation layer 40.

[0048] Meanwhile, the hydrophilic first sub-film layer 301 covers the display area AA and the non-display area located between the first barrier dam Dam1 and the display area AA, making the first inorganic encapsulation layer 30 more level, and making the organic encapsulation layer 40 subsequently formed on the first sub-film layer 301 have better level, effectively preventing the organic encapsulation layer 40 from producing orange peel mura.

[0049] Moreover, the hydrophobic second sub-film layer 302 can completely cover the display area AA and the non-display area, ensuring the good encapsulation effect of the first inorganic encapsulation layer 30.

[0050] like Figure 3 and Figure 4 As shown, in some embodiments, the display panel further includes a plurality of third blocking dams Dam3, the plurality of third blocking dams Dam3 being located between the first blocking dam Dam1 and the second blocking dam Dam2, and the plurality of third blocking dams Dam3 being arranged at intervals along the extension direction of the first blocking dam Dam1.

[0051] For example, the plurality of third barrier dams Dam3 are arranged at uniform intervals along the extension direction of the first barrier dam Dam1.

[0052] The display panel described above also includes multiple third barrier dams Dam3, which further slow down the flow of organic encapsulation material overflowing through the second barrier dam Dam2 during the manufacturing process of the organic encapsulation layer 40, thereby further preventing the problem of the organic encapsulation layer 40 overflowing through the first barrier dam Dam1 during the manufacturing process.

[0053] like Figure 3 and Figure 4 As shown, in some embodiments, the third barrier dam Dam3 includes a blocking portion Dam31 and a connecting portion Dam32 coupled together. The connecting portion Dam32 is located between the blocking portion Dam31 and the first barrier dam Dam1. The connecting portion Dam32 is coupled to both the blocking portion Dam31 and the first barrier dam Dam1. The extending direction of the blocking portion Dam31 intersects with the extending direction of the connecting portion Dam32.

[0054] For example, the blocking portion Dam31, the connecting portion Dam32, and the first blocking dam Dam1 are formed as an integral structure, but are not limited thereto.

[0055] For example, the third barrier dam Dam3 is formed as a T-shaped dam, with the blocking part Dam31 serving as the transverse part of the T-shaped dam and the connecting part Dam32 serving as the longitudinal part of the T-shaped dam.

[0056] The third barrier dam Dam3 described above includes the blocking part Dam31 and the connecting part Dam32, such that the extending direction of the blocking part Dam31 intersects with the flow direction of the organic encapsulation material, effectively enhancing the blocking effect of the third barrier dam Dam3 on the overflow of the organic encapsulation material.

[0057] like Figures 2 to 4 As shown, in some embodiments, the display panel further includes a hole; the non-display area includes a first sub-non-display area ND1, which surrounds the hole; a first blocking dam Dam1 and a second blocking dam Dam2 are located in the first sub-non-display area ND1, and both the first blocking dam Dam1 and the second blocking dam Dam2 surround the hole; the length W of the blocking portion Dam31 along its own extending direction is... T Satisfy: 1≤W T ≤π(d+2d T ) / 3; where d is the diameter of the circular area enclosed by the boundary of the first blocking dam Dam1 away from the hole area; d T The length of the connecting portion Dam32 along its own extending direction.

[0058] For example, the number n of the third blocking dam Dam3 set on the display panel satisfies: 3≤n≤π(d+2d) T ) / W T The value of n can be adjusted according to the size of the hole.

[0059] For example, the width W of the blocking portion Dam31 perpendicular to its own extending direction is between 1 μm and 100 μm; the length d of the connecting portion Dam32 along its own extending direction T Between 1μm and 100μm;

[0060] The above-described configuration provides a reasonable layout for the third blocking dam Dam3 and gives it a more suitable size, achieving the blocking effect while also being compatible with the narrow bezel layout requirements of the display panel.

[0061] like Figure 1 As shown, in some embodiments, the non-display area includes a second sub-non-display area ND2, which surrounds the display area AA; the first blocking dam Dam1 and the second blocking dam Dam2 are located in the second sub-non-display area ND2; and the plurality of third blocking dams Dam3 are arranged at intervals along the extension direction of the first blocking dam Dam1.

[0062] The above configuration further slows down the flow of organic encapsulation material overflowing through the second barrier dam Dam2 during the fabrication of the organic encapsulation layer 40 by the third barrier dam Dam3, thereby further preventing the problem of organic encapsulation layer 40 overflowing through the first barrier dam Dam1 during the fabrication process.

[0063] It is worth noting that the specific shape of the blocking part Dam31 varies.

[0064] like Figure 3 and Figure 4 As shown, in some embodiments, the blocking portion Dam31 is a straight strip. For example, the blocking portion Dam31 is formed into a rectangle, but it is not limited to this.

[0065] In some embodiments, the blocking portion Dam31 is an arc-shaped portion that bends toward the first blocking dam Dam1 and has the same curvature as its adjacent portion of the first blocking dam Dam1; or, the arc-shaped portion bends away from the first blocking dam Dam1.

[0066] For example, with the center of the hole area as the center, and (d+2d) T π(d+2d) is the diameter, forming a virtual ring. TLet ) be the circumference of the virtual ring. When the blocking part Dam31 is an arc-shaped part that curves toward the first blocking dam Dam1, the blocking part Dam31 can be configured to at least partially overlap with the virtual ring.

[0067] Setting the blocking portion Dam31 as either a straight strip or an arc shape can achieve a good blocking effect. Furthermore, setting the blocking portion Dam31 as an arc shape and bending it towards the first blocking dam Dam1 can better reduce the layout space occupied by the third blocking portion Dam31 between the first and second blocking portions Dam31, which is beneficial for achieving a narrower bezel on the display panel.

[0068] This invention also provides a display device, including the display panel provided in the above embodiments.

[0069] It should be noted that the display device can be any product or component with display function, such as a television, monitor, digital photo frame, mobile phone, or tablet computer. The display device also includes flexible circuit boards, printed circuit boards, and backplanes.

[0070] In the display panel provided in the above embodiment, the hydrophilic first sub-film layer 301 above the first barrier dam Dam1 in the first inorganic encapsulation layer 30 is removed, while the hydrophobic second sub-film layer 302 above the first barrier dam Dam1 is retained. This allows the second sub-film layer 302 to increase the resistance to the organic encapsulation material flowing towards the first barrier dam Dam Dam1 away from the display area AA during the fabrication of the organic encapsulation layer 40. This effectively confines the organic encapsulation material to the side of the first barrier dam Dam Dam facing the display area AA, preventing overflow problems during the fabrication of the organic encapsulation layer 40. Simultaneously, the hydrophilic first sub-film layer 301 covers the display area AA and the non-display area between the first barrier dam Dam Dam1 and the display area AA, making the first inorganic encapsulation layer 30 more leveled. This results in better leveling of the organic encapsulation layer 40 subsequently formed on the first sub-film layer 301, effectively preventing orange peel mura in the organic encapsulation layer 40. Moreover, the hydrophobic second sub-film layer 302 can completely cover the display area AA and the non-display area, ensuring the good encapsulation effect of the first inorganic encapsulation layer 30.

[0071] Therefore, the display device provided in the embodiments of the present invention, when including the above-described display panel, also has the above-described beneficial effects, which will not be repeated here.

[0072] This invention also provides a method for manufacturing a display panel, used to manufacture the display panel provided in the above embodiments, wherein the display panel includes a display area AA and a non-display area; the manufacturing method includes:

[0073] Create a first blocking dam Dam1 and a second blocking dam Dam2, wherein the first blocking dam Dam1 and the second blocking dam Dam2 are located in the non-display area, and the second blocking dam Dam2 is located between the first blocking dam Dam1 and the display area AA;

[0074] At least two inorganic encapsulation material sub-film layers are stacked on the side of the first barrier dam Dam1 and the second barrier dam Dam2 facing away from the substrate. The first inorganic encapsulation material sub-film layer, which is furthest from the substrate, is hydrophilic, and the second inorganic encapsulation material sub-film layer, which is adjacent to the first inorganic encapsulation material layer, is hydrophobic. The first inorganic encapsulation material sub-film layer is patterned to form a first sub-film layer 301. The first sub-film layer 301 covers the display area AA and the non-display area located between the first barrier dam Dam1 and the display area AA. The orthographic projection of the first sub-film layer 301 on the substrate does not overlap with the orthographic projection of the first barrier dam Dam1 on the substrate. The second inorganic encapsulation material sub-film layer is formed as a second sub-film layer 302, which covers the display area AA and the non-display area.

[0075] An organic encapsulation layer 40 is fabricated on the side of the first inorganic encapsulation layer 30 facing away from the substrate, and on the side of the first barrier dam Dam1 away from the boundary of the display area AA and facing the display area AA.

[0076] For example, the step of patterning the first inorganic encapsulation material subfilm layer to form the first subfilm layer 301 specifically includes: forming a photoresist layer on the first inorganic encapsulation material subfilm layer, performing exposure and development processes on the photoresist layer to form a photoresist pattern, using the photoresist pattern as a mask to etch the first inorganic encapsulation material subfilm layer to form the first subfilm layer 301, and finally removing the photoresist pattern.

[0077] In the display panel manufactured using the manufacturing method provided in the embodiments of the present invention, the first inorganic encapsulation layer 30 includes at least two sub-film layers stacked together. The first sub-film layer 301, which is furthest from the substrate of the display panel, is hydrophilic, and the second sub-film layer 302, which is adjacent to the first sub-film layer 301, is hydrophobic. The second sub-film layer 302 covers the display area AA and the non-display area. The first sub-film layer 301 covers the display area AA and the non-display area located between the first barrier dam Dam1 and the display area AA. The orthographic projection of the first sub-film layer 301 on the substrate does not overlap with the orthographic projection of the first barrier dam Dam1 on the substrate.

[0078] In the display panel manufactured using the method provided in this embodiment of the invention, the hydrophilic first sub-film layer 301 above the first barrier dam Dam1 in the first inorganic encapsulation layer 30 is removed, while the hydrophobic second sub-film layer 302 above the first barrier dam Dam1 is retained. This allows the second sub-film layer 302 to increase the resistance to the organic encapsulation material flowing towards the side of the first barrier dam Dam Dam away from the display area AA during the manufacturing process of the organic encapsulation layer 40. This effectively confines the organic encapsulation material to the side of the first barrier dam Dam Dam facing the display area AA, preventing overflow problems during the manufacturing process of the organic encapsulation layer 40. Simultaneously, the hydrophilic first sub-film layer 301 covers the display area AA and the non-display area between the first barrier dam Dam Dam1 and the display area AA, making the first inorganic encapsulation layer 30 more leveled. This results in better leveling of the organic encapsulation layer 40 subsequently formed on the first sub-film layer 301, effectively preventing orange peel mura in the organic encapsulation layer 40. Moreover, the hydrophobic second sub-film layer 302 can completely cover the display area AA and the non-display area, ensuring the good encapsulation effect of the first inorganic encapsulation layer 30.

[0079] It should be noted that "the structure extends in a certain direction" means that the structure includes a main part and a secondary part connected to the main part. The main part is a line, line segment, or strip-shaped body. The main part extends in a certain direction, and the length of the main part extending in a certain direction is greater than the length of the secondary part extending in other directions.

[0080] It should be noted that, in the embodiments of the present invention, "same layer" can refer to film layers located on the same structural layer. Alternatively, for example, film layers located on the same layer can be layer structures formed by using the same film deposition process to form a specific pattern, and then patterning the film layer using the same photomask through a single patterning process. Depending on the specific pattern, the single patterning process may include multiple exposure, development, or etching processes, and the specific pattern in the formed layer structure can be continuous or discontinuous. These specific patterns may also be at different heights or have different thicknesses.

[0081] In the various method embodiments of the present invention, the sequence numbers of each step are not intended to limit the order of the steps. For those skilled in the art, any changes in the order of the steps without creative effort are also within the scope of protection of the present invention.

[0082] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the method embodiments are basically similar to the product embodiments, so the description is relatively simple, and the relevant parts can be referred to the description of the product embodiments.

[0083] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connection,” “coupled,” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0084] It is understandable that when a component such as a layer, film, region, or substrate is referred to as being "above" or "below" another component, the component may be "directly" located "above" or "below" the other component, or there may be intermediate components present.

[0085] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0086] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A display panel, characterized by, The display panel comprises a display area and a non-display area; the display panel further comprises: a first barrier dam and a second barrier dam, the first barrier dam and the second barrier dam are located in the non-display area, and the second barrier dam is located between the first barrier dam and the display area; a first inorganic encapsulation layer, the first inorganic encapsulation layer comprises at least two sub-film layers arranged in layers, wherein a first sub-film layer farthest from a substrate of the display panel has hydrophilicity, a second sub-film layer adjacent to the first sub-film layer has hydrophobicity, the second sub-film layer covers the display area and the non-display area, the first barrier dam and the second barrier dam are both located between the second sub-film layer and the substrate, the first sub-film layer covers the display area, and covers the non-display area between the first barrier dam and the display area, a normal projection of the first sub-film layer on the substrate does not overlap with a normal projection of the first barrier dam on the substrate; an organic encapsulation layer, the organic encapsulation layer is located on a side of the first inorganic encapsulation layer away from the substrate, and is located on a side of the first barrier dam away from a boundary of the display area towards the display area.

2. The display panel of claim 1, wherein, The display panel further comprises: a plurality of third barrier dams, the plurality of third barrier dams are located between the first barrier dam and the second barrier dam, and the plurality of third barrier dams are arranged at intervals along an extension direction of the first barrier dam.

3. The display panel of claim 2, wherein, The third barrier dam comprises a barrier portion and a connecting portion coupled with each other, the connecting portion is located between the barrier portion and the first barrier dam, and the connecting portion is coupled with the barrier portion and the first barrier dam respectively, and an extension direction of the barrier portion intersects with an extension direction of the connecting portion.

4. The display panel of claim 3, wherein, The display panel further comprises a hole area; the non-display area comprises a first sub-non-display area, the first sub-non-display area surrounds the hole area; the first barrier dam and the second barrier dam are located in the first sub-non-display area, and the first barrier dam and the second barrier dam both surround the hole area; the length W of the barrier in its own extension direction T satisfies: 1 ≤ W T ≤ π(d + 2d T ) / 3; wherein d is the diameter of a circular area formed by the first barrier dam away from the border of the hole area; d T is the length of the connection portion along its own extension direction.

5. The display panel of claim 4, wherein, The number n of the third blocking dams arranged in the display panel satisfies: 3≤n≤π(d+2d T ) / W T .

6. The display panel of claim 4 or 5, wherein, The barrier portion is an arc-shaped portion, the arc-shaped portion is curved towards the first barrier dam, and the arc-shaped portion and the part of the first barrier dam adjacent to the arc-shaped portion have the same curvature; or the arc-shaped portion is curved away from the first barrier dam.

7. The display panel of claim 3, wherein, The non-display area comprises a second sub-non-display area, the second sub-non-display area surrounds the display area; the first barrier dam and the second barrier dam are located in the second sub-non-display area. 8.The display panel of any one of claims 3-5, 7, wherein, The barrier portion is a one-character-shaped strip portion.

9. A display device comprising: The display panel comprises a display area and a non-display area; the display panel further comprises:

10. A method for manufacturing a display panel, characterized in that, a first barrier dam and a second barrier dam, the first barrier dam and the second barrier dam are located in the non-display area, and the second barrier dam is located between the first barrier dam and the display area; a first inorganic encapsulation layer, the first inorganic encapsulation layer comprises at least two sub-film layers arranged in layers, wherein a first sub-film layer farthest from a substrate of the display panel has hydrophilicity, a second sub-film layer adjacent to the first sub-film layer has hydrophobicity, the second sub-film layer covers the display area and the non-display area, the first barrier dam and the second barrier dam are both located between the second sub-film layer and the substrate, the first sub-film layer covers the display area, and covers the non-display area between the first barrier dam and the display area, a normal projection of the first sub-film layer on the substrate does not overlap with a normal projection of the first barrier dam on the substrate; an organic encapsulation layer, the organic encapsulation layer is located on a side of the first inorganic encapsulation layer away from the substrate, and is located on a side of the first barrier dam away from a boundary of the display area towards the display area. The display panel further comprises: a plurality of third barrier dams, the plurality of third barrier dams are located between the first barrier dam and the second barrier dam, and the plurality of third barrier dams are arranged at intervals along an extension direction of the first barrier dam. The third barrier dam comprises a barrier portion and a connecting portion coupled with each other, the connecting portion is located between the barrier portion and the first barrier dam, and the connecting portion is coupled with the barrier portion and the first barrier dam respectively, and an extension direction of the barrier portion intersects with an extension direction of the connecting portion. The display panel further comprises a hole area; the non-display area comprises a first sub-non-display area, the first sub-non-display area surrounds the hole area; the first barrier dam and the second barrier dam are located in the first sub-non-display area, and the first barrier dam and the second barrier dam both surround the hole area; The barrier portion is an arc-shaped portion, the arc-shaped portion is curved towards the first barrier dam, and the arc-shaped portion and the part of the first barrier dam adjacent to the arc-shaped portion have the same curvature; or the arc-shaped portion is curved away from the first barrier dam. The non-display area comprises a second sub-non-display area, the second sub-non-display area surrounds the display area; the first barrier dam and the second barrier dam are located in the second sub-non-display area. The barrier portion is a one-character-shaped strip portion. The display panel comprises a display area and a non-display area; the display panel further comprises: a first barrier dam and a second barrier dam, the first barrier dam and the second barrier dam are located in the non-display area, and the second barrier dam is located between the first barrier dam and the display area; At least two layers of inorganic encapsulating material sub-film layers are stacked on the side of the first barrier dam and the second barrier dam away from the substrate, the first inorganic encapsulating material sub-film layer farthest from the substrate has hydrophilicity, the second inorganic encapsulating material sub-film layer adjacent to the first inorganic encapsulating material sub-film layer has hydrophobicity, the first inorganic encapsulating material sub-film layer is patterned to form a first sub-film layer, the first sub-film layer covers the display area and covers the non-display area between the first barrier dam and the display area, the orthographic projection of the first sub-film layer on the substrate does not overlap with the orthographic projection of the first barrier dam on the substrate; the second inorganic encapsulating material sub-film layer is formed into a second sub-film layer, the second sub-film layer covers the display area and the non-display area; An organic encapsulating layer is formed on the side of the first inorganic encapsulating layer away from the substrate and on the side of the first barrier dam away from the boundary of the display area towards the display area.

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