Display panel

Abstract

The present application discloses a display panel, which includes an array substrate, a planarization layer, a barrier member, a pixel definition layer, and a light-emitting layer. Among them, the planarization layer is disposed on the array substrate. The barrier member is disposed on a side of the planarization layer away from the array substrate. The pixel definition layer is disposed on a side of the planarization layer away from the array substrate, and the barrier member penetrates through the pixel definition layer. The pixel definition layer includes a plurality of openings. The light-emitting layer includes a plurality of light-emitting portions, and one light-emitting portion is disposed in one opening. The display panel disclosed in the present application can be used to improve the technical problem of display panel failure caused by water and oxygen erosion.

Description

Technical Field

[0001] This application relates to the field of display technologies, and in particular, to a display panel. Background Art

[0002] Organic Light-Emitting Diode (OLED) has characteristics such as self-luminescence, high brightness, wide viewing angle, high contrast, flexibility, and low power consumption, and thus has received extensive attention. As a new generation of display method, OLED display has begun to gradually replace traditional Liquid Crystal Display (LCD) and is widely used in mobile phone screens, computer monitors, full-color TVs, etc.

[0003] In an OLED display device, the light-emitting layer is an organic polymer, and the cathode is magnesium silver, etc., all of which are very sensitive to water and oxygen. Water and oxygen have a great impact on the OLED device and its lifespan. Therefore, it is crucial to reduce water and oxygen penetration. The existing pixel definition layer has a two-layer structure and does not block water and oxygen penetration. When a single pixel is eroded by water and oxygen, water and oxygen will diffuse around along the pixel definition layer, causing the surrounding pixels to be eroded and penetrated by water and oxygen, and then leading to the expansion of pixel failure and further resulting in the failure of the display panel.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above technical problems. Summary of the Invention

[0005] An embodiment of this application provides a display panel for improving the technical problem of display panel failure caused by water and oxygen erosion.

[0006] An embodiment of this application provides a display panel, including:

[0007] An array substrate;

[0008] A planarization layer disposed on the array substrate;

[0009] A barrier member disposed on a side of the planarization layer away from the array substrate;

[0010] A pixel definition layer disposed on a side of the planarization layer away from the array substrate, and the barrier member penetrates through the pixel definition layer. The pixel definition layer includes a plurality of openings;

[0011] A light-emitting layer, the light-emitting layer includes a plurality of light-emitting portions, and one light-emitting portion is disposed in one opening.

[0012] In the display panel provided by an embodiment of the present application, the barrier member includes a plurality of first barrier members and a plurality of second barrier members. The plurality of first barrier members extend in a first direction, and the plurality of second barrier members extend in a second direction. The first barrier members and the second barrier members intersect to form a plurality of barrier walls, and one of the barrier walls surrounds one of the light-emitting portions.

[0013] In the display panel provided by an embodiment of the present application, the barrier member includes a plurality of first barrier members and a plurality of second barrier members. The plurality of first barrier members extend in a first direction, and the plurality of second barrier members extend in a second direction. The first barrier members and the second barrier members intersect to form a plurality of barrier walls, and at least one of the barrier walls surrounds one of the light-emitting portions and at least one of the barrier walls surrounds a plurality of the light-emitting portions.

[0014] In the display panel provided by an embodiment of the present application, the barrier member includes a plurality of barrier walls, and any one of the barrier walls is disposed around one of the light-emitting portions.

[0015] In the display panel provided by an embodiment of the present application, the barrier wall has a single-barrier-wall structure.

[0016] In the display panel provided by an embodiment of the present application, the barrier wall includes a first barrier wall and a second barrier wall. The first barrier wall is disposed on the planarization layer, and the second barrier wall is disposed on a side of the first barrier wall close to or away from the opening.

[0017] In the display panel provided by an embodiment of the present application, the barrier member further includes a third barrier wall, and the third barrier wall is disposed on a side of the second barrier wall away from the first barrier wall.

[0018] In the display panel provided by an embodiment of the present application, the first barrier wall and the third barrier wall have a greater ability to block water and oxygen than the second barrier wall.

[0019] In the display panel provided by an embodiment of the present application, the materials of the first barrier wall and the third barrier wall include at least one of silicon nitride, silicon oxide, silicon oxynitride, aluminum, silver, aluminum oxide, or silver oxide, and the material of the second barrier wall includes at least one of silicon nitride, silicon oxide, silicon oxynitride, aluminum, silver, aluminum oxide, silver oxide, and an organic polymer.

[0020] In the display panel provided by an embodiment of the present application, a side of the barrier member away from the planarization layer is higher than a side of the light-emitting layer away from the planarization layer.

[0021] In the display panel provided by an embodiment of the present application, a side of the barrier member away from the planarization layer is flush with a side of the pixel definition layer away from the planarization layer.

[0022] In the display panel provided by the embodiment of the present application, the planarization layer includes a groove, and the blocking member is disposed in the groove.

[0023] In the display panel provided by the embodiment of the present application, the height of the blocking member ranges from 0.5 micrometers to 3 micrometers.

[0024] In the display panel provided by the embodiment of the present application, each light-emitting portion is located within the blocking member.

[0025] The embodiment of the present application provides a display panel, which includes an array substrate, a planarization layer, a blocking member, a pixel definition layer, and a light-emitting layer. Among them, the planarization layer is disposed on the array substrate. The blocking member is disposed on a surface of the planarization layer away from the array substrate. The pixel definition layer is disposed on a surface of the planarization layer away from the array substrate, and the blocking member penetrates through the pixel definition layer. The pixel definition layer includes a plurality of openings. The light-emitting layer includes a plurality of light-emitting portions. A light-emitting portion is disposed in an opening, and each light-emitting portion is located within the blocking member. By disposing the blocking member on the planarization layer in the embodiment of the present application, it is used to block water and oxygen from eroding the light-emitting layer from the side, thereby preventing the display panel from failing. Therefore, the display panel provided by the embodiment of the present application can be used to improve the technical problem of display panel failure caused by water and oxygen erosion. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 It is the first planar structure schematic diagram of the display panel provided by the embodiment of the present application;

[0028] Figure 2 It is Figure 1 The first cross-sectional view of the display panel taken along the A-A direction;

[0029] Figure 3 It is Figure 1 The second cross-sectional view of the display panel taken along the A-A direction;

[0030] Figure 4 It is Figure 1 The third cross-sectional view of the display panel taken along the A-A direction.

[0031] Figure 5 It is the second planar structure schematic diagram of the display panel provided by the embodiment of the present application;

[0032] Figure 6 This is the third schematic plan view of the display panel provided by the embodiment of the present application. Detailed implementation manners

[0033] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. Please refer to the diagrams in the accompanying drawings, where the same component symbols represent the same components. The following description is based on the specific embodiments of the present application shown, and it should not be regarded as limiting other specific embodiments of the present application not described in detail herein. The term "embodiment" used in this specification means an instance, example or illustration.

[0034] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0035] The embodiment of the present application provides a display panel. The following will be described in detail respectively. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments.

[0036] The embodiment of the present application provides a display panel. The display panel includes an array substrate, a planarization layer, a barrier member, a pixel definition layer, and a light-emitting layer. Among them, the planarization layer is disposed on the array substrate. The barrier member is disposed on a side of the planarization layer away from the array substrate. The pixel definition layer is disposed on a side of the planarization layer away from the array substrate, and the barrier member penetrates through the pixel definition layer. The pixel definition layer includes a plurality of openings. The light-emitting layer includes a plurality of light-emitting portions, and one light-emitting portion is disposed in one opening. By disposing the barrier member on the planarization layer in the embodiment of the present application, it is used to block water and oxygen from eroding the light-emitting layer from the side, thereby preventing the display panel from failing. Therefore, the display panel provided by the embodiment of the present application can be used to improve the technical problem of display panel failure caused by water and oxygen erosion.

[0037] The display panel provided by the present application will be elaborated in detail through specific embodiments below.

[0038] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic diagram of the first planar structure of the display panel provided by the embodiment of the present application. Figure 2 is Figure 1 the first cross-sectional view of the display panel taken along the A-A direction. An embodiment of the present application provides a display panel 100, which includes an array substrate 10, a planarization layer 201, a barrier member 30, a pixel definition layer 40, and a light-emitting layer 502. Among them, the planarization layer 201 is disposed on the array substrate 10. The barrier member 30 is disposed on a side of the planarization layer 201 away from the array substrate 10. The pixel definition layer 40 is disposed on a side of the planarization layer 201 away from the array substrate 10, and the barrier member 30 penetrates through the pixel definition layer 40. The pixel definition layer 40 includes a plurality of openings 40a. A light-emitting portion 502a is disposed in an opening 40a. In the embodiment of the present application, by disposing the barrier member 30 on the planarization layer 201, it is used to block water and oxygen from eroding the light-emitting layer 502 from the side, thereby preventing the display panel 100 from failing. Therefore, the display panel 100 provided by the embodiment of the present application can improve the ability to isolate water and oxygen, so that a single pixel unit is not affected by the water vapor of adjacent pixel units, thereby improving the technical problem of the failure of the display panel 100 caused by water and oxygen erosion.

[0039] The array substrate 10 includes a substrate 101, a buffer layer 102, a light-shielding layer 103, an active layer 104, a gate insulating layer 105, a gate 106, a source electrode 107, a drain electrode 108, an auxiliary electrode 109, an interlayer dielectric layer 110, and a passivation layer 111. Among them, the buffer layer 102 is disposed on a side of the light-shielding layer 103 away from the substrate 101. The active layer 104 is disposed on a side of the buffer layer 102 away from the substrate 101. The gate insulating layer 105 is disposed on a side of the active layer 104 away from the buffer layer 102. The gate 106 is disposed on a side of the gate insulating layer 105 away from the active layer 104. The source electrode 107 and the drain electrode 108 are electrically connected to the active layer 104 through contact holes respectively. The auxiliary electrode 109 is disposed in a via hole for connecting the drain electrode 108 and the light-shielding layer 103. The interlayer dielectric layer 110 covers the gate 106, the active layer 104, and the buffer layer 102. The passivation layer 111 covers the source electrode 107, the drain electrode 108, and the interlayer dielectric layer 110. In the embodiment of the present application, since the light-shielding layer 103 is electrically connected to the drain electrode 108, the light-shielding layer 103 can not only be used to shield light for the active layer 104 to prevent the light from affecting the stability of the active layer 104; moreover, since the light-shielding layer 103 is electrically connected to the drain electrode 108, and there are overlapping regions between the light-shielding layer 103 and both the active layer 104 and the gate 106, parasitic capacitances will be formed between the light-shielding layer 103 and the active layer 104 and the gate 106 respectively. When the display panel 100 is operating, as the voltages applied on the data signal lines are different, the voltage on the drain electrode 108 will change accordingly, causing the voltage on the light-shielding layer 103 to also change, thereby affecting the electrical performance of the active layer 104. By connecting the light-shielding layer 103 and the drain electrode 108 to form an equipotential, the change in the voltage on the light-shielding layer 103 can be avoided from affecting the electrical performance of the active layer 104.

[0040] It should be noted that the thin-film transistor of the array substrate 10 in the embodiment of the present application can be a single-gate thin-film transistor or a double-gate thin-film transistor; it can be a top-gate thin-film transistor or a bottom-gate thin-film transistor. The embodiment of the present application takes the top-gate thin-film transistor as an example for illustration, but is not limited thereto.

[0041] In some embodiments, the substrate 101 may include a first flexible layer 101a, a first barrier layer 101b, a second flexible layer 101c, and a second barrier layer 101d which are sequentially stacked. The light-shielding layer 103 is located on a side of the second barrier layer 101d away from the second flexible layer 101c.

[0042] The first barrier layer 101b is used to prevent water and oxygen from permeating from one side of the first flexible layer 101a to the structures above the first barrier layer 101b, so as to prevent damage to the array substrate 10. In some embodiments, the materials of the first barrier layer 101b and the second barrier layer 101d include but are not limited to silicon-containing oxides, nitrides, or oxynitrides. For example, the material of the first barrier layer 101b is SiOx , SiN x or SiO x N y At least one of them, and the material of the first barrier layer 101b is SiO x , SiN x or SiO x N y At least one of them. The material of the first flexible layer 101a may be the same as that of the second flexible layer 101c, and it may include at least one of PI (polyimide), PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PC (polycarbonate), PES (polyethersulfone), PAR (aromatic fluorotoluene containing polyarylate), or PCO (polycyclic olefin).

[0043] In some embodiments, the materials of the light-shielding layer 103, the gate 106, the source 107, the first drain 102d, the second drain 108, and the auxiliary electrode 109 include a metal such as silver (Ag), magnesium (Mg), aluminum (Al), tungsten (W), copper (Cu), nickel (Ni), chromium (Cr), molybdenum (Mo), titanium (Ti), platinum (Pt), tantalum (Ta), neodymium (Nd), or scandium (Sc), their alloys, their nitrides, etc., or any combination thereof. The materials of the buffer layer 102, the gate insulating layer 105, the interlayer dielectric layer 110, and the passivation layer 111 include one or any combination of silicon oxide, silicon nitride, or silicon oxynitride.

[0044] In some embodiments, the display panel 100 further includes a storage capacitor C, which includes a first electrode plate c1 and a second electrode plate c2. The first electrode plate c1 is on the same layer and made of the same material as the light-shielding layer 103. The second electrode plate c2 is on the same layer and made of the same material as the source 107. The orthographic projection of the first electrode plate c1 on the substrate 101 covers the orthographic projection of the second electrode plate c2 on the substrate 101. In the embodiments of the present application, since the first electrode plate c1 is on the same layer and made of the same material as the light-shielding layer 103, and the second electrode plate c2 is on the same layer and made of the same material as the source 107, the manufacturing process of the display panel 100 can be simplified.

[0045] Optionally, in some embodiments, the storage capacitor C includes a first electrode plate c1, a second electrode plate c2, and a third electrode plate c3. The first electrode plate c1 is on the same layer and made of the same material as the light-shielding layer 103. The second electrode plate c2 is on the same layer and made of the same material as the source electrode 107. The third electrode plate c3 is on the same layer and made of the same material as the active layer 104. The orthographic projection of the first electrode plate c1 on the substrate 101 covers the orthographic projection of the second electrode plate c2 on the substrate 101. The orthographic projection of the first electrode plate c1 on the substrate 101 covers the orthographic projection of the third electrode plate c3 on the substrate 101. The second electrode plate c2 is electrically connected to the first electrode plate c1. In the embodiments of the present application, the structure of the storage capacitor C is set as a sandwich structure, that is, the first electrode plate c1 and the third electrode plate c3 can be regarded as the first sub-storage capacitor, the second electrode plate c2 and the third electrode plate c3 can be regarded as the second sub-storage capacitor, and the first sub-storage capacitor and the second sub-storage capacitor adopt a parallel design, increasing the ability of the capacitor to store charges. In addition, since the third electrode plate c3 is arranged on the same layer as the active layer 104, the third electrode plate c3 can be formed while forming the active layer 104. Therefore, there is no need to add a photomask, simplifying the manufacturing process of the display panel 100. It should be understood that the third electrode plate c3 is formed by making a semiconductor material conductive.

[0046] The planarization layer 201 is disposed on the passivation layer 111. The material of the planarization layer 201 can be an organic material. For example, the material of the planarization layer 201 can be acrylic resin.

[0047] In some embodiments, please continue to refer to Figure 1 , the barrier member 30 includes a plurality of first barrier members 30a and a plurality of second barrier members 30b. The plurality of first barrier members 30a extend along the first direction X and are arranged along the second direction Y. The plurality of second barrier members 30b extend along the second direction Y and are arranged along the first direction X. The first barrier members 30a and the second barrier members 30b intersect to form a plurality of barrier walls 301, and the barrier walls 301 surround the light-emitting portion 502a. In the embodiments of the present application, two adjacent barrier walls 301 share a part, thereby forming an annular barrier wall disposed around each light-emitting portion 502a. This setting method can be used to save the space of the display panel 100 when two adjacent sub-pixels are densely arranged. In addition, this setting method can also save the material cost of the barrier member 30.

[0048] In some embodiments, each light-emitting portion 502a is located within the barrier member 30, thereby protecting all the light-emitting portions 502a from being invaded by water and oxygen, and improving the overall stability of the display panel 100.

[0049] In some embodiments, the barrier wall 301 is a single barrier wall structure. When the barrier wall 301 is a single barrier wall structure, its material can be at least one of silicon nitride, silicon oxide, silicon oxynitride, aluminum, silver, aluminum oxide, or silver oxide. In the embodiments of the present application, the barrier wall 301 being a single barrier wall structure can simplify the manufacturing process of the barrier wall 301.

[0050] Please refer to Figure 3 , Figure 3 is Figure 1 the second cross-sectional view of the display panel taken along the A-A direction. In some embodiments, the barrier wall 301 includes a first barrier wall 301a and a second barrier wall 301b. The first barrier wall 301a is disposed on the planarization layer 201, and the second barrier wall 301b is disposed on one side of the first barrier wall 301a close to or far from the opening 40a. In the embodiments of the present application, the barrier wall 301 is a double-layer structure, which extends the path of water and oxygen erosion and further improves the technical problem of the failure of the display panel 100 caused by water and oxygen erosion.

[0051] In another embodiment, the barrier wall 301 includes a first barrier wall 301a, a second barrier wall 301b, and a third barrier wall 301c. The second barrier wall 301b is disposed on one side of the first barrier wall 301a close to or far from the opening 40a, and the third barrier wall 301c is disposed on the side of the second barrier wall 301b away from the first barrier wall 301a. In one embodiment, the first barrier wall 301a is disposed on the side of the planarization layer 201 away from the array substrate 10. The second barrier wall 301b is disposed on the side of the first barrier wall 301a close to or far from the opening 40a. The third barrier wall 301c is disposed on the side of the second barrier wall 301b away from the first barrier wall 301a. In the embodiments of the present application, the barrier wall is a three-layer structure, which further extends the path of water and oxygen intrusion, thereby further improving the problem of the failure of the display panel 100 caused by water and oxygen erosion.

[0052] In some embodiments, the ability of the first barrier wall 301a and the third barrier wall 301c to block water and oxygen is greater than that of the second barrier wall 301b. Since the ability of the first barrier wall 301a on the side far from the light-emitting part 502a to block water and oxygen is relatively strong, it can block more water and oxygen intrusion and prevent the display panel 100 from failing.

[0053] In some embodiments, the materials of the first barrier wall 301a and the third barrier wall 301c include at least one of silicon nitride, silicon oxide, silicon oxynitride, aluminum, silver, aluminum oxide, or silver oxide. The material of the second barrier wall 301b includes at least one of silicon nitride, silicon oxide, silicon oxynitride, aluminum, silver, aluminum oxide, silver oxide, and organic polymer. For example, in a specific embodiment, the material of the first barrier wall 301a is aluminum, the second barrier wall 301b is epoxy resin, and the material of the third barrier wall 301c is silver. Since the materials of the first barrier wall 301a and the third barrier wall 301c are transparent metal materials, when water and oxygen erode, oxygen reacts with aluminum and silver to form dense aluminum oxide films and silver oxide films, thereby blocking the invasion of water and oxygen and improving the stability of the display panel 100. And the material of the second barrier wall 301b is epoxy resin material. Since the flexibility of epoxy resin is greater than that of metal materials, it can provide stress for the display panel 100 to meet the bending requirements of the display panel 100.

[0054] Please refer to Figure 4 , Figure 4 is Figure 1 the second cross-sectional view of the display panel taken along the A-A direction. In some embodiments, the planarization layer 201 includes a groove Gr, and the barrier member 30 is disposed in the groove Gr. In the embodiments of the present application, by providing the groove Gr on the planarization layer 201 and snapping the barrier member 30 into the groove Gr, the stability between the planarization layer 201 and the barrier member 30 is increased.

[0055] In some embodiments, the side of the barrier member 30 away from the planarization layer 201 is higher than the side of the light-emitting layer 502 away from the planarization layer 201. In the embodiments of the present application, since the side of the barrier member 30 away from the planarization layer 201 is higher than the side of the light-emitting layer 502 away from the planarization layer 201, it is used to block the invasion of water and oxygen from the side and prevent damage to the display panel 100.

[0056] In another embodiment, the side of the barrier member 30 away from the planarization layer 201 is flush with the side of the pixel defining layer 40 away from the planarization layer 201. Since the barrier member 30 is flush with the pixel defining layer 40, it further blocks the invasion of water and oxygen from the side, prevents damage to the display panel 100, and improves the stability of the display panel 100.

[0057] In some embodiments, the height of the barrier member 30 ranges from 0.5 micrometers to 3 micrometers. For example, the height of the barrier member 30 can be any one of 0.5 micrometers, 0.8 micrometers, 1.0 micrometers, 1.2 micrometers, 1.5 micrometers, 2.0 micrometers, 2.5 micrometers, or 3 micrometers. In the embodiments of the present application, by setting the height of the barrier member 30 between 0.5 micrometers and 3 micrometers, the intrusion of water and oxygen is blocked, thereby improving the stability of the display panel 100.

[0058] It should be noted that the height of the barrier member 30 is the distance between the side of the barrier member 30 in contact with the planarization layer 201 and the side of the barrier member 30 away from the planarization layer 201.

[0059] In some embodiments, the pixel defining layer 40 includes a first pixel defining layer 401 and a second pixel defining layer 402. The first pixel defining layer 401 is disposed on the side of the planarization layer 201 away from the array substrate 10. The first pixel defining layer 401 has a hydrophilic property. The second pixel defining layer 402 is disposed on the side of the first pixel defining layer 401 away from the planarization layer 201. The second pixel defining layer 402 has a hydrophobic property.

[0060] Hydrophilicity means that the surface of the material is easily wetted or dissolved by a liquid medium. Hydrophobicity (also known as lyophobicity) is the opposite of hydrophilicity. Hydrophobicity means that the surface of the material is not easily wetted or dissolved by a liquid medium. The hydrophilic and hydrophobic properties of the material surface are mainly determined by its surface structure or the properties of functional groups. In the present application, the hydrophilic and hydrophobic properties of the pixel defining layer 40 can be changed and adjusted by adjusting the process parameters, such as the parameters of the development process and the curing process. Changing and adjusting the hydrophilic and hydrophobic properties of the pixel defining layer 40 can adapt to different printing processes, types of inks, and thicknesses of the film layers, making the pixel defining layer 40 more easily adapt to the requirements of different display panels.

[0061] Specifically, the thickness of the material of the pixel defining layer 40 affects the hydrophilic and hydrophobic properties of the material. For example, when the hydrophobic material is very thin, it does not have hydrophobicity. In addition, plasma treatment of the material with oxygen (O2) or nitrogen (N2) can change the hydrophobicity to hydrophilicity, and plasma treatment of the material with fluorine (F) can change the hydrophilicity to hydrophobicity.

[0062] Optionally, the pixel defining layer 40 is a Line-bank structure, that is, at least one of the openings in the pixel defining layer 40 in the panel has a through-strip opening in at least one of the vertical and horizontal directions, so that the pixel defining layer 40 is also a through-strip. The pixel defining layer 40 with a Line-bank structure is more conducive to the organic molecules formed by inkjet printing to obtain better uniformity.

[0063] The display panel further includes an anode 501 and a cathode 503. Among them, the anode 501 is disposed on a side of the planarization layer 201 away from the array substrate 10 and is electrically connected to the array substrate 10. The opening 40a exposes a part of the anode 501. The light-emitting portion 502a is defined within the opening 40a. The barrier member 30 surrounds the light-emitting portion 502a. The cathode 503 is disposed on a side of the pixel defining layer 40 away from the anode 501.

[0064] In some embodiments, the light-emitting layer 502 can be fabricated by an ink-jet printing (IJP) process. The material concentration of the ink-jet printed light-emitting layer 502 is relatively low, and a relatively large amount of the light-emitting layer 502 material needs to be printed to achieve the target film thickness. However, a relatively large amount of the light-emitting layer 502 material is usually likely to overflow from the opening during printing and bridge with the light-emitting layer 502 materials of other colors, resulting in color mixing. In the embodiment of the present application, the side of the pixel defining layer 40 close to the array substrate 10 has a hydrophilic property, and the side away from the array substrate 10 has a hydrophobic property, so that color mixing caused by the overflow of the light-emitting layer 502 can be avoided.

[0065] In some embodiments, the material of the anode 501 includes any one of indium gallium zinc oxide, indium zinc tin oxide, indium gallium zinc tin oxide, indium tin oxide (ITO), indium zinc oxide, indium aluminum zinc oxide, indium gallium tin oxide, or antimony tin oxide. The above materials have good electrical conductivity and transparency, and have a relatively small thickness, which will not affect the overall thickness of the display panel. At the same time, it can also reduce harmful electronic radiation and ultraviolet and infrared light to the human body. For example, the material of the anode 501 can be a stacked material of ITO / Ag / ITO.

[0066] In some embodiments, the material of the cathode 503 can be at least one of magnesium or silver.

[0067] In some embodiments, the display panel 100 further includes a hole transport layer, a hole injection layer, an electron transport layer, and an electron injection layer. Among them, the hole injection layer is disposed on a side of the anode 501 away from the planarization layer 201. The hole transport layer is disposed on a side of the hole injection layer away from the anode 501. The electron transport layer is disposed on a side of the light-emitting layer 502 away from the anode 501. The electron injection layer is disposed on a side of the electron transport layer away from the light-emitting layer 502. In the embodiment of the present application, by providing a hole transport layer, a hole injection layer, an electron transport layer, and an electron injection layer, the light-emitting efficiency of the display panel 100 is improved.

[0068] In some embodiments, the display panel 100 further includes a packaging layer 60. The packaging layer 60 is disposed on a side of the cathode 503 away from the planarization layer 201. The packaging layer 60 includes a first inorganic packaging layer 601, an organic packaging layer 602, and a second inorganic packaging layer 603 that are sequentially stacked. In some embodiments, the materials of the first inorganic packaging layer 601 and the second inorganic packaging layer 603 may be selected from silicon dioxide, nitrogen dioxide, silicon oxynitride, and their laminates. The material of the organic packaging layer 602 is selected from organic materials such as epoxy resin, polyimide (PI), polyethylene terephthalate (PET), polycarbonate (PC), polyethylene (PE), and polyacrylate.

[0069] Please refer to Figure 5 , Figure 5 which is a second schematic plan view of the display panel provided by the embodiment of the present application. The difference between the display panel 100 provided by the embodiment of the present application and Figure 1 the display panel 100 provided is that the barrier member 30 includes a plurality of barrier walls 301, and any one of the barrier walls 301 is disposed around a light-emitting portion 502a. Since one barrier wall 301 corresponds to one light-emitting portion 502a, there is a structure of a plurality of barrier walls 301 between any two adjacent light-emitting portions 502a, which extends the path of water and oxygen intrusion and further improves the stability of the display panel 100.

[0070] Please refer to Figure 6 , Figure 6 which is a third schematic plan view of the display panel provided by the embodiment of the present application. The difference between the display panel 100 provided by the embodiment of the present application and Figure 1 the display panel 100 provided is that at least one barrier wall 301 surrounds a light-emitting portion 502a and at least one barrier wall 301 surrounds a plurality of light-emitting portions 502a. Since water and oxygen diffuse from the edge of the display panel 100 to the middle, which causes the display panel 100 to fail, in the embodiment of the present application, the barrier member 30 is only disposed in the peripheral portion of the display panel 100, and there is no need to dispose the barrier member 30 in the area close to the middle of the display panel 100, that is, in the area close to the center of the display panel, a plurality of light-emitting portions 502a share one barrier wall 301. This setting method can save the material cost of the barrier member 30.

[0071] It should be noted that, in the embodiment of the present application, the lengths of the plurality of first barrier members 30a may be different, and the lengths of the plurality of second barrier members 30b may also be different, so as to form barrier walls 301 of different sizes (as shown by the dotted line frame). It should be understood that, in the embodiment of the application, the barrier wall 301 is the smallest closed structure formed by the intersection of the first barrier member 30a and the second barrier member 30b (as shown by the dotted line frame).

[0072] It should be noted that the display panel 100 can be an active light-emitting display panel, such as an Organic Light-Emitting Diode (OLED) display panel, an Active Matrix Organic Light-Emitting Diode (AMOLED) display panel, a Passive Matrix Organic Light-Emitting Diode (PMOLED) display panel, a Quantum Dot Light Emitting Diode (QLED) display panel, a Micro Light-Emitting Diode (Micro-LED) display panel, and a Mini Light-Emitting Diode (Mini-LED) display panel, etc.

[0073] Correspondingly, an embodiment of the present application further provides a method for manufacturing a display panel. The method for manufacturing the display panel includes the following steps:

[0074] Step B001: Provide an array substrate.

[0075] Among them, the manufacturing method of the array substrate belongs to the prior art and will not be elaborated here.

[0076] Step B002: Form a planarization layer on the array substrate.

[0077] Specifically, an organic material, such as acrylic resin, is coated on the array substrate to form a planarization layer.

[0078] Step B003: Form an anode on the planarization layer. The anode is electrically connected to the array substrate through a via hole.

[0079] Specifically, under the action of plasma or an electric field, the first electrode material is bombarded, and molecules, atoms, ions, electrons, etc. of the first electrode material are sputtered out. The sputtered first electrode material has a certain kinetic energy and shoots towards the array substrate along a certain direction, thereby forming the first electrode material on the array substrate. The deposition method has a fast speed, a dense film layer, and good adhesion, and is very suitable for large-scale and high-efficiency industrial production.

[0080] After depositing the first electrode material, the first electrode material is patterned to obtain the anode.

[0081] Step B004: Form a barrier member on the planarization layer.

[0082] Specifically, in one embodiment, a barrier material is deposited on the planarization layer by Plasma Enhanced Chemical Vapor Deposition (PECVD), and the barrier material is etched to form a barrier member.

[0083] In another embodiment, first, a first barrier material is deposited on the planarization layer by Plasma Enhanced Chemical Vapor Deposition (PECVD), and the first barrier material is etched to form a first barrier wall. Secondly, a second barrier material is formed by a photolithography (Photo) technique, and then the second barrier material is exposed and developed to form a second barrier wall. Finally, a third barrier material is deposited on the planarization layer by Plasma Enhanced Chemical Vapor Deposition (PECVD), and the third barrier material is etched to form a third barrier wall, thereby forming a barrier member.

[0084] Step B005: Form a pixel definition layer on the planarization layer through a photolithography process.

[0085] Step B006: Form a light-emitting layer in the opening of the pixel definition layer through an inkjet printing or evaporation process.

[0086] Step B007: Evaporate at least one of magnesium or silver over the entire surface to form a cathode.

[0087] Step B008: Form a packaging layer on the cathode.

[0088] In summary, although the present application has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present application. Those of ordinary skill in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the scope defined by the claims.

Claims

1. A display panel, characterized in that, Comprising: An array substrate; A planarization layer disposed on the array substrate; A barrier member disposed on a side of the planarization layer away from the array substrate; A pixel definition layer disposed on a side of the planarization layer away from the array substrate, and the barrier member penetrates through the pixel definition layer, and the pixel definition layer includes a plurality of openings; A light-emitting layer, the light-emitting layer includes a plurality of light-emitting portions, and one light-emitting portion is disposed in one opening; Wherein, the barrier member includes a plurality of barrier walls, any one of the barrier walls surrounds one light-emitting portion, the barrier member includes a first barrier wall, a second barrier wall and a third barrier wall, the first barrier wall is disposed on the planarization layer, the second barrier wall is disposed on a side of the first barrier wall close to or away from the opening, and the third barrier wall is disposed on a side of the second barrier wall away from the first barrier wall; The water and oxygen barrier capabilities of the first barrier wall and the third barrier wall are greater than those of the second barrier wall.

2. The display panel according to claim 1, wherein The barrier member includes a plurality of first barrier members and a plurality of second barrier members, the plurality of first barrier members extend in a first direction, the plurality of second barrier members extend in a second direction, and the first barrier members and the second barrier members intersect to form a plurality of barrier walls, and one barrier wall surrounds one light-emitting portion.

3. The display panel according to claim 1, wherein The barrier member includes a plurality of first barrier members and a plurality of second barrier members, the plurality of first barrier members extend in a first direction, the plurality of second barrier members extend in a second direction, and the first barrier members and the second barrier members intersect to form a plurality of barrier walls, at least one barrier wall surrounds one light-emitting portion and at least one barrier wall surrounds a plurality of light-emitting portions.

4. The display panel according to any one of claims 2 to 3, characterized in that, The barrier wall is a single-barrier wall structure.

5. The display panel according to claim 1, characterized in that, The materials of the first barrier wall and the third barrier wall include at least one of silicon nitride, silicon oxide, silicon oxynitride, aluminum, silver, aluminum oxide or silver oxide, and the material of the second barrier wall includes at least one of silicon nitride, silicon oxide, silicon oxynitride, aluminum, silver, aluminum oxide, silver oxide and organic polymer.

6. The display panel according to claim 1, wherein A side of the barrier member away from the planarization layer is higher than a side of the light-emitting layer away from the planarization layer.

7. The display panel according to claim 6, wherein A side of the barrier member away from the planarization layer is flush with a side of the pixel definition layer away from the planarization layer.

8. The display panel according to claim 1, wherein, The planarization layer includes a groove, and the barrier member is disposed in the groove.

9. The display panel according to claim 1, characterized in that, The height of the barrier member ranges from 0.5 micrometers to 3 micrometers.

10. The display panel according to claim 1, characterized in that, Each light-emitting portion is located within the barrier member.

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