Display panel and display device

Abstract

The utility model relates to a display panel and a display device.The display panel comprises an array substrate, a first pixel limiting structure and a second pixel limiting structure, the first pixel limiting structure and the second pixel limiting structure are arranged above the array substrate, the array substrate comprises a display area and a peripheral area, the first pixel limiting structure is located in the display area, and the second pixel limiting structure is located in the peripheral area; the second pixel limiting structure comprises N hydrophilic layers and N hydrophobic layers, the hydrophilic layers and the hydrophobic layers are sequentially and alternately stacked in the thickness direction of the array substrate, and N is larger than or equal to 2; the second pixel limiting structure located in the peripheral area is arranged to be a structure formed by alternately stacking the multiple hydrophilic layers and the multiple hydrophobic layers, the depth of the virtual printing area is increased, in other words, under the condition of the limited frame width, the ink printing amount of the virtual printing area is increased, the ink drying rate of the peripheral area can be effectively improved, and the printing quality is improved. Therefore, the thickness uniformity of the light-emitting film layer in the display area is improved, and the display effect of the display panel is improved.

Description

TECHNICAL FIELD

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

[0002] When an organic light-emitting diode (OLED) device is prepared by using an inkjet printing technology, the light-emitting film layer obtained by inkjet printing deposition of a light-emitting material has different drying effects due to different saturated vapor pressures of edge pixels and middle pixels of a display area and different drying atmospheres, which causes the edge pixels to dry too fast, resulting in uneven film thickness of the light-emitting area, affecting the overall film thickness uniformity, and seriously affecting the performance of the light-emitting device.

[0003] In order to improve the drying rate of ink in the display area, the prior art usually adds a dummy area outside the display area to ensure that the drying environment of the display area and the peripheral area is consistent during the vacuum drying process of the device. However, due to the limited width of the frame of the display panel, the space left for the peripheral dummy area is limited, resulting in the problem of uneven film thickness of the display area due to poor drying of the ink. UTILITY MODEL CONTENT

[0004] Therefore, the present application provides a display panel and a display device, which can effectively improve the drying rate of ink in the peripheral area, thereby improving the thickness uniformity of the light-emitting film layer in the display area and improving the display effect of the display panel.

[0005] The present application provides a display panel, which comprises:

[0006] An array substrate comprising a display area and a peripheral area located on at least one side of the display area;

[0007] A first pixel defining structure disposed above the array substrate and located in the display area, the first pixel defining structure comprising a plurality of first openings and a first barrier wall disposed around each first opening;

[0008] A second pixel defining structure disposed above the array substrate and located in the peripheral area, the second pixel defining structure comprising at least one second opening and a second barrier wall disposed around each second opening;

[0009] The second pixel defining structure comprises N layers of hydrophilic layers and N layers of hydrophobic layers, the hydrophilic layers and the hydrophobic layers being alternately stacked in the thickness direction of the array substrate, and N is greater than or equal to 2.

[0010] In some embodiments, the film layer of the second pixel defining structure close to the side of the array substrate is the hydrophilic layer, and the film layer away from the side of the array substrate is the hydrophobic layer.

[0011] In some embodiments, the opening area of the second opening away from the side of the array substrate is greater than the opening area of the second opening close to the side of the array substrate.

[0012] In some embodiments, the edge of the Nth layer of the hydrophobic layer is inwardly recessed relative to the edge of the Nth layer of the hydrophilic layer in a direction away from the center of the second opening, and the edge of the Nth layer of the hydrophilic layer is inwardly recessed relative to the edge of the (N-1)th layer of the hydrophobic layer in a direction away from the center of the second opening.

[0013] In some embodiments, the inwardly recessed distance of the edge of the Nth layer of the hydrophobic layer relative to the edge of the Nth layer of the hydrophilic layer ranges from 5um to 10um, and the inwardly recessed distance of the edge of the Nth layer of the hydrophilic layer relative to the edge of the (N-1)th layer of the hydrophobic layer ranges from 5um to 10um.

[0014] In some embodiments, the thickness of the hydrophilic layer ranges from 450nm to 550nm, and the thickness of the hydrophobic layer ranges from 900nm to 1100nm.

[0015] In some embodiments, the second pixel defining structure includes a first hydrophilic layer, a second hydrophilic layer, a first hydrophobic layer, and a second hydrophobic layer, wherein the first hydrophilic layer is located above the array substrate, the first hydrophobic layer is located on the side of the first hydrophilic layer away from the array substrate, the second hydrophilic layer is located on the side of the first hydrophobic layer away from the first hydrophilic layer, and the second hydrophobic layer is located on the side of the second hydrophilic layer away from the first hydrophobic layer.

[0016] In some embodiments, the second pixel defining structure includes at least two second barriers, each of which is arranged around the display area, and the second opening is located between two adjacent second barriers.

[0017] In some embodiments, the second pixel defining structure includes a spacing barrier connected between two adjacent second barriers, and the second barrier and the spacing barrier are arranged around the second opening to form at least two second openings between the two adjacent second barriers.

[0018] In some embodiments, the array substrate further includes a virtual display area located between the display area and the peripheral area.

[0019] The display panel further comprises a third pixel defining structure disposed above the array substrate and located in the virtual display area, the third pixel defining structure is provided with a plurality of third openings, and the third pixel defining structure comprises a third barrier wall disposed around each third opening; the third pixel defining structure has the same pattern as the first pixel defining structure.

[0020] The application further provides a display device comprising the display panel as described above.

[0021] The application provides a display panel and a display device, the display panel comprises an array substrate, and a first pixel defining structure located in a display area and a second pixel defining structure located in a peripheral area which are disposed above the array substrate, wherein the second pixel defining structure comprises N layers of hydrophilic layers and N layers of hydrophobic layers, the hydrophilic layers and the hydrophobic layers are sequentially and alternately stacked in the thickness direction of the array substrate, N≥2, and the second pixel defining structure located in the peripheral area is arranged in a structure in which a plurality of hydrophilic layers and a plurality of hydrophobic layers are alternately stacked, thereby increasing the depth of the virtual printing area, i.e., increasing the ink printing amount of the virtual printing area under the condition of a limited frame width, effectively improving the ink drying rate of the peripheral area, making the drying atmosphere of the peripheral area and the display area consistent, thereby improving the thickness uniformity of the light-emitting film layer of the display area and improving the display effect of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0023] In order to more completely understand the application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0024] Figure 1 is a partial top view of a display panel provided by an embodiment of the application;

[0025] Figure 2 is a partial cross-sectional view of a display panel provided by an embodiment of the application;

[0026] Figure 3 is a structure schematic view of a second pixel defining structure of a display panel provided by an embodiment of the application;

[0027] Figure 4 is a partial top view of another display panel provided by an embodiment of the application;

[0028] Figure 5 is another partial cross-sectional view of a display panel provided by an embodiment of the present application.

[0029] Legend of reference signs:

[0030] 100, display panel; 110, array substrate; 111, substrate; 120, first pixel defining structure; 121, first opening; 122, first barrier wall; 130, second pixel defining structure; 131, second opening; 132, hydrophilic layer; 1321, first hydrophilic layer; 1322, second hydrophilic layer; 133, hydrophobic layer; 1331, first hydrophobic layer; 1332, second hydrophobic layer; 134, second barrier wall; 135, spacer barrier wall; 140, third pixel defining structure; 141, third opening; 142, third barrier wall; 150, light-emitting layer; 160, anode. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative labor fall within the protection scope of the present application.

[0032] The present application provides a display panel 100, please refer to Figure 1 and Figure 2 , the display panel 100 includes an array substrate 110, a first pixel defining structure 120 and a second pixel defining structure 130. The array substrate 110 includes a display area AA and a peripheral area NB located at least one side of the display area AA, for example, the peripheral area NB can be located at one side, two sides, three sides or around the display area AA; The first pixel defining structure 120 is arranged above the array substrate 110 and located in the display area AA, the first pixel defining structure 120 is provided with a plurality of first openings 121, and the first pixel defining structure 120 includes a first barrier wall 122 arranged around each first opening 121, wherein the first opening 121 is configured as a light-emitting pixel printing area; The second pixel defining structure 130 is arranged above the array substrate 110 and located in the peripheral area NB, the second pixel defining structure 130 is provided with at least one second opening 131, and the second pixel defining structure 130 includes a second barrier wall 134 arranged around each second opening 131, wherein the second opening 131 is configured as a virtual printing area; wherein the second pixel defining structure 130 includes N layers of hydrophilic layer 132 and N layers of hydrophobic layer 133, the hydrophilic layer 132 and the hydrophobic layer 133 are arranged in turn and alternately along the thickness direction Y of the array substrate 110, N≥2.

[0033] In the hydrophilic layer 132, at least the side of the hydrophilic layer 132 close to the second opening 131 has a contact angle less than 90°, and in the hydrophobic layer 133, at least the side of the hydrophobic layer 133 close to the second opening 131 has a contact angle greater than 90°, wherein the contact angle less than 90° indicates that the surface has hydrophilic property, and the liquid has good wettability on the surface, and the contact angle greater than 90° indicates that the surface has hydrophobic property, and the liquid has poor wettability on the surface.

[0034] The array substrate 110 includes a substrate and thin film transistors and metal traces disposed on the substrate. The display area AA of the array substrate 110 is provided with the thin film transistors for controlling the pixel switch to realize the image display of the display area, and the peripheral area NB is provided with the metal traces for connecting the display area circuit and the external driving circuit, and plays a role of signal transmission. The substrate can be made of rigid material, such as glass, and the substrate can also be made of flexible material, such as polyimide (PI). The thin film transistor includes structures such as an active layer, a gate insulating layer, a gate, and a source-drain layer. The specific structures of the thin film transistor and the metal trace can refer to the prior art, and the present application is not limited. In addition, the array substrate further includes a buffer layer between the thin film transistor and the substrate, an interlayer insulating layer between the gate and the source-drain layer, a passivation layer above the source-drain layer, a planarization layer, and the like. The number and arrangement of the above-mentioned film layers can be set according to the actual performance requirements of the array substrate 110, and the present application is not limited.

[0035] The first pixel defining structure 120 is arranged in the display area AA of the array substrate 110, and the first pixel defining structure 120 is provided with a plurality of first openings 121, which are light-emitting pixel printing areas for defining the range of light-emitting pixels. The light-emitting pixel printing area is used for printing first ink, and the first ink includes a light-emitting material and a solvent. After the first ink is dried, a light-emitting layer 150 is formed in the first opening 121. The first pixel defining structure 120 can include one or more layers of hydrophilic layer 132 or hydrophobic layer 133, or a combination of both. For example, the first pixel defining structure 120 can include a hydrophilic layer 132 on the array substrate 110 and a hydrophobic layer 133 on the side of the hydrophilic layer 132 away from the array substrate 110. The hydrophilic layer 132 is located at the lower layer to facilitate the spreading of the first ink in the first opening 121, and the hydrophobic layer 133 is located at the upper layer to facilitate the smooth flow of the first ink into the first opening 121 during printing, while avoiding color mixing between adjacent pixels.

[0036] The second pixel defining structure 130 is arranged in the peripheral area NB which is a non-display area, and the second pixel defining structure 130 is provided with at least one second opening 131 which serves as a virtual printing area for improving the ink drying environment of the edge of the display area AA and ensuring the film thickness uniformity of the light-emitting layer 150 of the display area AA. The virtual printing area is used for printing second ink, and the material of the second ink can be the same as or different from that of the first ink. For example, the material of the second ink can be the same as that of the first ink, and the second ink can include the same light-emitting material and solvent as the first ink to facilitate printing while ensuring that the ink drying environment of the display area AA and the peripheral area NB is consistent, but the film layer formed after the second ink in the peripheral area NB is dried does not participate in light emission, that is, the peripheral area NB does not display an image. The material of the second ink can also be different from that of the first ink, and the second ink can only include a solvent, such as the same solvent as the first ink, so that the peripheral area NB can ensure the same solvent drying atmosphere as the display area AA while avoiding the formation of a light-emitting material film layer in the peripheral area NB.

[0037] In the present application, the second pixel defining structure 130 includes N layers of hydrophilic layers 132 and N layers of hydrophobic layers 133, N≥2, for example, N can be equal to 2, 3, 4, 5, etc. The hydrophilic layer 132 and the hydrophobic layer 133 are arranged in sequence and alternately along the thickness direction Y of the array substrate 110, that is, one layer of hydrophobic layer 133 is arranged between two adjacent layers of hydrophilic layer 132, or one layer of hydrophilic layer 132 is arranged between two adjacent layers of hydrophobic layer 133.

[0038] Please refer to Figure 3 For example, N=2, the second pixel defining structure 130 includes a first hydrophilic layer 1321, a second hydrophilic layer 1322, a first hydrophobic layer 1331 and a second hydrophobic layer 1332, wherein the first hydrophilic layer 1321 is located above the array substrate 110, the first hydrophobic layer 1331 is located on the side of the first hydrophilic layer 1321 away from the array substrate 110, the second hydrophilic layer 1322 is located on the side of the first hydrophobic layer 1331 away from the first hydrophilic layer 1321, and the second hydrophobic layer 1332 is located on the side of the second hydrophilic layer 1322 away from the first hydrophobic layer 1331.

[0039] The number of layers of the hydrophilic layer 132 and the hydrophobic layer 133 contained in the second pixel defining structure 130 can be set according to the performance requirements of the display panel 100, the thickness of the hydrophilic layer 132 and the thickness of the hydrophobic layer 133, etc. The number of layers of the hydrophilic layer 132 and the hydrophobic layer 133 contained in the second pixel defining structure 130 should not be too much, and the more the number of layers, the higher the process complexity. In the present application, it is preferred that N is equal to 2 or 3, and it is further preferred that N is equal to 2.

[0040] In the present application, the material of the hydrophilic layer 132 can be an organic or inorganic hydrophilic material, the material of the hydrophobic layer 133 can be an organic or inorganic hydrophobic material, and the material of the hydrophilic layer 132 and the material of the hydrophobic layer 133 can adopt any of the materials used in the pixel definition structure in the art, which is not limited in the present application.

[0041] In some embodiments, the film layer close to the array substrate 110 in the second pixel definition structure 130 is a hydrophilic layer, and the film layer away from the array substrate 110 is a hydrophobic layer. Please refer to Figure 3 Taking N=2 as an example, along the thickness direction of the array substrate 110, the second pixel definition structure 130 includes a first hydrophilic layer 1321, a first hydrophobic layer 1331, a second hydrophilic layer 1322, and a second hydrophobic layer 1332 which are sequentially stacked, wherein the film layer close to the array substrate 110 is the first hydrophilic layer 1321, and the film layer away from the array substrate 110 is the second hydrophobic layer 1332. The present application sets the film layer close to the array substrate 110 as a hydrophilic layer, which is more conducive to the spreading of the second ink in the second opening 131, thereby improving the uniformity of the film thickness, and sets the film layer away from the array substrate 110 as a hydrophobic layer, which can reduce the problem of color mixing of the second ink in adjacent second openings 131.

[0042] In some embodiments, the opening area of the second opening 131 away from the array substrate 110 is greater than the opening area of the second opening 131 close to the array substrate 110, so as to further increase the ink printing amount of the virtual printing area, slow down the drying rate of the ink above the virtual printing area, and improve the ink drying environment of the peripheral area NB. In addition, since the ink capacity of the peripheral area NB is increased, the width of the frame can be correspondingly reduced, which is conducive to the design of narrow frame.

[0043] In some embodiments, the edge of the Nth hydrophobic layer 133 is inwardly recessed relative to the edge of the Nth hydrophilic layer 132 away from the center of the second opening 131, and the edge of the Nth hydrophilic layer 132 is inwardly recessed relative to the edge of the N-1th hydrophobic layer 133 away from the center of the second opening 131, i.e., the edge of the second pixel definition structure 130 is arranged in a stepped manner.

[0044] Please refer to Figure 3For example, the edge of the first layer of hydrophobic layer 133 is arranged to be inwardly recessed relative to the edge of the first layer of hydrophilic layer 132, the edge of the second layer of hydrophilic layer 132 is arranged to be inwardly recessed relative to the edge of the first layer of hydrophobic layer 133, and the edge of the second layer of hydrophobic layer 133 is arranged to be inwardly recessed relative to the edge of the second layer of hydrophilic layer 132. By forming a stepped structure for the edge of the second pixel defining structure 130, the second opening 131 can be formed into an inverted trapezoidal cross section with a wide upper part and a narrow lower part, thereby increasing the opening area of the upper part of the second opening 131, i.e., increasing the ink printing amount of the virtual printing area, and further improving the ink drying rate of the peripheral area NB. Therefore, when the edge of the second pixel defining structure 130 is arranged in a stepped structure, both the ink printing depth of the virtual printing area and the drying rate of the ink above the virtual printing area are reduced, the ink drying environment of the peripheral area NB is effectively improved, the drying atmosphere of the peripheral area NB and the display area AA is consistent, the thickness uniformity of the light-emitting layer 150 of the display area AA is further improved, and thus the display effect of the display panel 100 can be effectively improved.

[0045] Further, the inwardly recessed distance d1 of the edge of the Nth layer of hydrophobic layer 133 relative to the edge of the Nth layer of hydrophilic layer 132 ranges from 5 um to 10 um, which can be 5 um, 7 um, 9 um, 10 um, etc., and the inwardly recessed distance d2 of the edge of the Nth layer of hydrophilic layer 132 relative to the edge of the (N-1)th layer of hydrophobic layer 133 ranges from 5 um to 10 um, which can be 5 um, 7 um, 9 um, 10 um, etc. The distances d1 and d2 can be equal or different. When the inwardly recessed distances d1 and d2 are within the above range, the opening size of the second opening 131 can be increased to improve the ink printing amount of the virtual printing area, while the barrier performance of the second pixel defining structure 130 is not affected.

[0046] Further, the thickness of the hydrophilic layer 132 ranges from 450 nm to 550 nm, which can be 450 nm, 470 nm, 500 nm, 530 nm, 550 nm, etc., and the thickness of the hydrophobic layer 133 ranges from 900 nm to 1100 nm, which can be 900 nm, 950 nm, 1000 nm, 1050 nm, 1100 nm, etc. When the thicknesses of the hydrophilic layer 132 and the hydrophobic layer 133 are within the above range, the depth of the second opening 131 can be increased to improve the ink printing amount of the virtual printing area, while the barrier performance of the second pixel defining structure 130 is not affected.

[0047] In the present application, the second pixel defining structure 130 includes at least two second barriers 134 arranged at intervals, each of the second barriers 134 is arranged around the display area AA, and the second opening 131 is located between two adjacent second barriers 134, i.e., one second opening 131 (a virtual printing area) is defined between two adjacent second barriers 134. In the present application, the peripheral area NB can include one or more virtual printing areas, wherein the second barrier 134 includes N layers of hydrophilic layers 132 and N layers of hydrophobic layers 133, the hydrophilic layers 132 and the hydrophobic layers 133 are alternately and sequentially stacked along the thickness direction Y of the array substrate 110, and N≥2.

[0048] For example, please refer to Figure 1 and Figure 2 The second pixel defining structure 130 can include two second barriers 134, the first second barrier 134 is arranged around the display area AA, the second second barrier 134 is arranged around the first second barrier 134, and the two second barriers 134 define one second opening 131.

[0049] For example, please refer to Figure 4 and Figure 5 The second pixel defining structure 130 includes three second barriers 134, the first second barrier 134 is arranged around the display area AA, the second second barrier 134 is arranged around the first second barrier 134, and the third second barrier 134 is arranged around the second second barrier 134, and the three second barriers 134 define two second openings 131.

[0050] In some embodiments, the second pixel defining structure 130 further includes a spacing barrier 135 connected between two adjacent second barriers 134, and the second barrier 134 and the spacing barrier 135 are arranged around the second opening 131 to form at least two second openings 131 between the two adjacent second barriers 134. The spacing barrier 135 defines a plurality of second openings 131 in the second pixel defining structure 130, and the amount of ink in different second openings 131 is different to meet the setting of different drying atmospheres in different areas.

[0051] In some embodiments, the array substrate 110 further includes a virtual display area NA located between the display area AA and the peripheral area NB, the virtual display area NA is provided with a pixel pattern consistent with the display area AA, but the pixels of the virtual display area NA do not emit light, i.e., do not display images. The virtual display area NA is located between the display area AA and the peripheral area NB, as a transition area, plays a buffering role, and can further improve the drying environment of the edge of the display area AA.

[0052] Further, the display panel 100 further comprises a third pixel defining structure 140, the third pixel defining structure 140 is arranged above the array substrate 110 and located in the virtual display area NA, the third pixel defining structure 140 is provided with a plurality of third openings 141, and the third pixel defining structure 140 comprises a third barrier wall 142 arranged around each third opening 141, wherein the third opening 141 is configured as a virtual pixel printing area. Wherein, the pattern of the third pixel defining structure 140 is the same as that of the first pixel defining structure 120, so as to ensure that the pixel structure of the virtual display area NA is the same as that of the display area AA. The ink material of the virtual pixel printing area is the same as that of the light-emitting pixel printing area, so as to ensure that the drying environment of the virtual display area NA is consistent with that of the display area AA, that is, the virtual display area NA and the display area AA have the same pixel structure, the same ink, and thus have the same drying environment, which can further ensure that the film thickness of the light-emitting layer 150 at the edge of the display area AA is consistent with that of the light-emitting layer 150 in the middle of the display area AA, improve the film thickness uniformity of the light-emitting layer 150 of the display area AA, and further improve the display effect of the display panel 100.

[0053] In this application, please refer to Figure 2 The display panel 100 further comprises an anode 160, the anode 160 is located between the array substrate 110 and the first pixel defining structure 120 and the second pixel defining structure 130, the first opening 121 and the second opening 131 both expose the anode 160, and the anode 160 located in the display area AA is electrically connected with the source-drain electrode layer of the thin film transistor, so as to realize the light-emitting of the light-emitting layer 150 of the display area AA controlled by the thin film transistor.

[0054] The display panel 100 further comprises a cathode and an encapsulation layer (not shown in the figure), wherein the cathode is located on the side of the first pixel defining structure, the second pixel defining structure and the light-emitting layer 150 away from the array substrate 110, and covers the first pixel defining structure, the second pixel defining structure and the light-emitting layer 150; the encapsulation layer is located on the side of the cathode away from the array substrate 110, and covers the cathode and the array substrate 110, and plays a role of protecting the light-emitting device.

[0055] The application further provides a display device, which comprises the display panel 100 as described above. The display device can be a mobile phone, a tablet computer, a computer, a television and the like, but is not limited thereto.

[0056] The application provides a display panel and a display device, the display panel comprises an array substrate and a first pixel defining structure located in a display area and a second pixel defining structure located in a peripheral area above the array substrate, wherein the second pixel defining structure comprises N layers of hydrophilic layers and N layers of hydrophobic layers, the hydrophilic layers and the hydrophobic layers are alternately and sequentially arranged along the thickness direction of the array substrate, and N is greater than or equal to 2, the second pixel defining structure located in the peripheral area is arranged in a structure in which the hydrophilic layers and the hydrophobic layers are alternately and sequentially arranged, the depth of a virtual printing area is increased, the ink printing amount of the virtual printing area is increased under the condition of a limited frame width, the ink drying rate of the peripheral area can be effectively improved, the drying atmosphere of the peripheral area and the display area is consistent, and then the thickness uniformity of a light-emitting film layer of the display area is improved, and the display effect of the display panel is improved.

[0057] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0058] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0059] The embodiments, implementation manners and related technical features of the present application can be combined and replaced with each other without conflict.

[0060] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, but any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present application without departing from the technical solution content of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A display panel, characterized by, The array substrate comprises a display area and a peripheral area located at least one side of the display area; A first pixel defining structure is arranged above the array substrate and located in the display area, a plurality of first openings are arranged in the first pixel defining structure, and the first pixel defining structure comprises a first barrier wall arranged around each first opening; A second pixel defining structure is arranged above the array substrate and located in the peripheral area, at least one second opening is arranged in the second pixel defining structure, and the second pixel defining structure comprises a second barrier wall arranged around each second opening; The second pixel defining structure comprises N layers of hydrophilic layers and N layers of hydrophobic layers, the hydrophilic layers and the hydrophobic layers are alternately and sequentially arranged along the thickness direction of the array substrate, and N is greater than or equal to 2. The film layer close to the array substrate side of the second pixel defining structure is the hydrophilic layer, and the film layer away from the array substrate side is the hydrophobic layer.

2. The display panel of claim 1, wherein, The opening area of the second opening away from the array substrate side is greater than the opening area of the second opening close to the array substrate side.

3. The display panel of claim 1, wherein, The edge of the Nth layer of the hydrophobic layer is arranged inwardly relative to the edge of the Nth layer of the hydrophilic layer in a direction away from the center of the second opening, and the edge of the Nth layer of the hydrophilic layer is arranged inwardly relative to the edge of the (N-1)th layer of the hydrophobic layer in a direction away from the center of the second opening.

4. The display panel of claim 3, wherein, The inwardly retracted distance of the edge of the Nth layer of the hydrophobic layer relative to the edge of the Nth layer of the hydrophilic layer ranges from 5 um to 10 um, and the inwardly retracted distance of the edge of the Nth layer of the hydrophilic layer relative to the edge of the (N-1)th layer of the hydrophobic layer ranges from 5 um to 10 um. The thickness of the hydrophilic layer ranges from 450 nm to 550 nm, and the thickness of the hydrophobic layer ranges from 900 nm to 1100 nm.

5. The display panel of claim 1, wherein, The second pixel defining structure comprises a first hydrophilic layer, a second hydrophilic layer, a first hydrophobic layer and a second hydrophobic layer, wherein the first hydrophilic layer is located above the array substrate, the first hydrophobic layer is located on the side of the first hydrophilic layer away from the array substrate, the second hydrophilic layer is located on the side of the first hydrophobic layer away from the first hydrophilic layer, and the second hydrophobic layer is located on the side of the second hydrophilic layer away from the first hydrophobic layer.

6. The display panel of claim 1, wherein, The second pixel defining structure comprises at least two second barrier walls, each of which is arranged around the display area, and the second opening is located between two adjacent second barrier walls.

7. The display panel of claim 1, wherein, The second pixel defining structure comprises a spacing barrier wall connected between two adjacent second barrier walls, and the second barrier wall and the spacing barrier wall are arranged around the second opening to form at least two second openings between the two adjacent second barrier walls.

8. The display panel of claim 7, wherein, The array substrate further comprises a virtual display area located between the display area and the peripheral area.

9. The display panel of any one of claims 1 to 8, wherein, ​ The display panel further comprises a third pixel defining structure disposed above the array substrate and located in the virtual display area, the third pixel defining structure is provided with a plurality of third openings, and the third pixel defining structure comprises a third barrier wall disposed around each third opening. The third pixel defining structure has the same pattern as the first pixel defining structure.

10. A display device, characterized by comprising: The display panel as claimed in any one of claims 1 to 9.

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