CN109037480B - Display panel and manufacturing method thereof - Google Patents
Display panel and manufacturing method thereof Download PDFInfo
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- CN109037480B CN109037480B CN201810864381.6A CN201810864381A CN109037480B CN 109037480 B CN109037480 B CN 109037480B CN 201810864381 A CN201810864381 A CN 201810864381A CN 109037480 B CN109037480 B CN 109037480B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
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Abstract
The invention provides a display panel and a manufacturing method thereof. This display panel includes the backplate, the backplate surface has organic light emitting display array be provided with packaging structure on the organic light emitting display array to and barricade, the barricade setting is between backplate and packaging structure, sets up around display panel's display area, and has the clearance between the display area, and the material that forms the barricade contains water absorbing material. The retaining wall of the display panel can effectively prevent external moisture and oxygen from invading the interior of the display panel for a long time by absorbing the moisture and the oxygen, thereby ensuring good packaging effect of the display panel; simultaneously, after the barricade absorbed moisture and oxygen, also can not produce harmful effects to display panel's display effect, can be so that this display panel's display picture preferred, the display quality is high, of high quality, and the barricade sets up around the display area, and is with low costs, can make this display panel be better in the resistant effect of buckling when being applied to flexible display.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a manufacturing method thereof.
Background
In the related art, when the display panel is packaged, in order to improve the packaging effect of the display panel, a retaining wall is often further disposed on the basis of the packaging structure. However, even after the display panel provided with the barrier wall is used for a long time, the problem of water and oxygen invasion still occurs.
Thus, the related art of the existing display panel still needs to be improved.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a display panel that can effectively prevent external moisture and oxygen from entering for a long time by absorbing moisture and oxygen, and has a good packaging effect, a good display screen, high quality, good quality, low cost, or a good bending resistance effect.
In one aspect of the invention, a display panel is provided. According to an embodiment of the invention, the display panel comprises a back plate, wherein the surface of the back plate is provided with an organic light emitting display array, an encapsulation structure is arranged on the organic light emitting display array, and a retaining wall is arranged between the back plate and the encapsulation structure, arranged around a display area of the display panel, and provided with a gap with the display area, and the material forming the retaining wall comprises a water absorbing material. On one hand, as the material forming the retaining wall comprises the water absorbing material, the external moisture and oxygen can be effectively prevented from invading the interior of the display panel for a long time by absorbing the moisture and the oxygen, and the packaging effect of the display panel is good; on the other hand, contain water-absorbing material the barricade centers on display panel the display area sets up, the barricade distance the display area has the clearance, consequently the barricade distance still has certain distance between the display area after the barricade absorbs moisture and oxygen, also can not be right display panel's display effect produces harmful effects, can make this display panel's display screen preferred, and the display quality is high, of high quality, just the barricade centers on the display area sets up, compares and all is provided with on whole display panel in the correlation technique the barricade, with low costs, can make this display panel when being applied to flexible display, the position that does not set up the barricade in the display area can not produce bending stress, and then makes this display panel's resistant effect of buckling better.
According to an embodiment of the present invention, the package structure includes at least two inorganic film layers and an organic film layer disposed between the inorganic film layers, the inorganic film layers extend to a non-display region of the display panel, the organic film layers extend to an edge of the display region, and the inorganic film layers cover the retaining wall and are attached to the retaining wall.
According to the embodiment of the invention, the retaining wall comprises a first sub-retaining wall and a second sub-retaining wall, and the first sub-retaining wall and the second sub-retaining wall are arranged at intervals in the direction far away from the display area.
According to an embodiment of the present invention, a surface of at least one of the first sub-retaining wall and the second sub-retaining wall, which is in contact with the package structure, is a curved surface.
According to an embodiment of the present invention, the retaining wall is formed of the water absorbing material.
According to an embodiment of the present invention, a material forming the first sub-retaining wall does not include the water absorbing material, and a material forming the second sub-retaining wall includes the water absorbing material.
According to an embodiment of the invention, the water absorbing material is an organic material.
According to an embodiment of the present invention, the display panel further includes: the barrier layer, the barrier layer sets up packaging structure keeps away from the barricade on the surface, just the barrier layer is in orthographic projection on the backplate with the barricade is in orthographic projection on the backplate has at least partly to overlap.
According to an embodiment of the invention, the material forming the barrier layer comprises a water absorbing material.
In another aspect of the invention, there is provided a method of making the display panel described above. According to an embodiment of the invention, the method comprises: providing a back plate; forming a retaining wall around the organic light emitting display array on the surface of the back plate by a composition process or an ink jet printing method; and forming an encapsulation structure covering the organic light-emitting display array and the retaining wall. The method is simple and convenient to operate, easy to realize and easy for industrial production, the prepared display panel can effectively prevent external moisture and oxygen from invading for a long time by absorbing moisture and oxygen, the packaging effect is good, the display picture is good, the quality is high, the quality is good, the cost is low, in the display panel prepared, the retaining wall is arranged around the display area, and compared with the prior art in which the retaining wall is arranged on the whole display panel, when the display panel is applied to flexible display, the position without the retaining wall in the display area can not generate bending stress, so that the bending resistance effect of the display panel is better.
According to an embodiment of the present invention, further comprising: and forming a barrier layer on the surface of the packaging structure far away from the retaining wall and at a position corresponding to the retaining wall.
According to an embodiment of the present invention, forming the retaining wall includes: forming a first sub-retaining wall by a composition process or an ink-jet printing method; and forming a second sub-retaining wall on one side of the first sub-retaining wall far away from the organic light-emitting display array by an ink-jet printing method.
Drawings
Fig. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the invention.
Fig. 2 is a schematic cross-sectional view of a display panel according to another embodiment of the invention.
Fig. 3a, 3b, and 3c are schematic cross-sectional views illustrating a display panel according to still another embodiment of the invention.
Fig. 4 is a schematic cross-sectional view illustrating a display panel according to still another embodiment of the invention.
Fig. 5a, 5b and 5c are schematic cross-sectional views illustrating a display panel according to still another embodiment of the invention.
FIG. 6 is a flow chart illustrating a method for fabricating a display panel according to an embodiment of the invention.
Fig. 7a, 7b, and 7c are schematic flow charts illustrating a method for fabricating a display panel according to another embodiment of the invention.
FIG. 8 is a flowchart illustrating a method for fabricating a display panel according to another embodiment of the present invention.
Fig. 9a and 9b are schematic flow charts illustrating a method for fabricating a display panel according to still another embodiment of the invention.
FIG. 10 is a flow chart illustrating a method for fabricating a display panel according to still another embodiment of the present invention.
Fig. 11 is a schematic cross-sectional view illustrating a display panel according to still another embodiment of the invention.
Reference numerals:
10: display area 20: the non-display area 30: gap 100: display panel 110: the back plate 120: organic light emitting display array 130: the package structure 1301: first inorganic film layer 1302: first organic film layer 1303: second inorganic film layer 140: the retaining wall 1401: first sub-retaining wall 1402: second sub-retaining wall 150: barrier layer
Detailed Description
The following describes embodiments of the present invention in detail. The following examples are illustrative only and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
In one aspect of the invention, a display panel 100 is provided. According to an embodiment of the present invention, referring to fig. 1, the display panel 100 includes a back plate 110; the surface of the back plate 110 is provided with an organic light emitting display array 120, and an encapsulation structure 120 is arranged on the organic light emitting display array 120 and is used for covering and sealing the organic light emitting display array 120; a retaining wall 140, wherein the retaining wall 140 is disposed between the back plate 110 and the package structure 130, and disposed around the display region 10 of the display panel 100 (it should be noted that, only the positions of the display region 10 and the non-display region 20 of the present invention are shown in fig. 1, and in other embodiments described later, the positions of the display region 10 and the non-display region 20 are the same as those shown in fig. 1 and are not particularly designated), a gap 30 is formed between the retaining wall 140 and the display region 10, and the material forming the retaining wall 140 includes a water absorbing material.
On one hand, since the material forming the retaining wall 140 includes a water absorbing material, it is possible to effectively prevent external moisture and oxygen from invading the inside of the display panel 100 for a long time by absorbing moisture and oxygen, thereby making the packaging effect of the display panel 100 good. On the other hand, the barricade 140 that contains water absorbing material centers on display panel 100 display area 10 sets up, barricade 140 distance clearance 30 has between the display area 10, consequently barricade 140 distance still has certain distance between the display area 10 after barricade 140 absorbs moisture and oxygen, also can not be right display panel 100's display effect produces harmful effects, can make this display panel 100's display screen preferred, and it is high to show the quality, of high quality, just barricade 140 centers on display area 10 sets up, all is provided with on comparing in the whole display panel among the correlation technique the barricade, with low costs, can make this display panel 100 when being applied to flexible display, the position that does not set up the barricade in the display area can not produce the stress of buckling, and then makes this display panel's resistant effect of buckling better.
According to an embodiment of the present invention, the backplane 100 may include a substrate and a circuit structure (such as a thin film transistor, a connecting wire, and the like) disposed on the substrate and used for realizing normal display of the display panel 100, where the substrate may be made of a flexible plastic such as polyimide, and the circuit structure may be a circuit structure adopted by a conventional display panel, and is not described herein in detail. Therefore, the display panel 100 can be bent easily, and the material source is wide and easy to obtain, and the cost is low.
According to an embodiment of the present invention, the organic light emitting display array 120 may include a conventional organic electroluminescent layer structure such as an electron transport layer and a hole transport layer, which are not described herein in detail, wherein the material types of the electron transport layer and the hole transport layer are organic electroluminescent materials, such as organometallic complexes, which are not described herein in detail. Therefore, the material source is wide and easy to obtain, the cost is low, and the display is facilitated.
According to an embodiment of the present invention, referring to fig. 2, the retaining wall 140 may include a first sub-retaining wall 1401 and a second sub-retaining wall 1402, and the first sub-retaining wall 1401 and the second sub-retaining wall 1402 are spaced apart from each other in a direction away from the display region. Therefore, the first sub-retaining wall 1401 and the second sub-retaining wall 1402 which comprise water-absorbing materials are arranged around the display area between the back plate 110 and the packaging structure 130, and the possibility of moisture and oxygen entering the display panel 100 from the edge of the display panel 100 is reduced due to the fact that the path of moisture and oxygen entering the display panel 100 from the edge of the display panel 100 is prolonged, and the packaging effect of the display panel 100 is further improved; meanwhile, the retaining wall 140 only includes two sub-retaining walls, namely, the first sub-retaining wall 1401 and the second sub-retaining wall 1402, and the number of the sub-retaining walls is not too much, so that the display panel 100 can realize a narrow frame.
According to the embodiment of the present invention, at least one of the first sub-retaining wall 1401 and the second sub-retaining wall 1402 is a curved surface in contact with the encapsulation structure 130, which can further extend the path of moisture and oxygen entering the display panel 100 from the edge of the display panel 100, thereby reducing the possibility of moisture and oxygen entering the edge of the display panel 100, and further improving the encapsulation effect of the display panel 100.
In some embodiments of the present invention, referring to fig. 3a, a surface of the first sub-retaining wall 1401 in contact with the package structure 130 is a curved surface (it should be noted that, in fig. 3a, 3b, 3c, 4, 5a, 5b, 5c, and 9b of the present invention, only a surface of the first sub-retaining wall 1401 and/or the second sub-retaining wall 1402 in contact with the package structure 130 is shown as a curved surface, and no limitation is imposed on a curvature of the curved surface, and the number, specific shape, and the like of the protruding portions and the recessed portions). Therefore, the path of moisture and oxygen entering the display panel 100 from the edge of the display panel 100 can be further extended, so that the possibility of moisture and oxygen entering the display panel 100 from the edge of the display panel 100 is reduced, and the packaging effect of the display panel 100 is further improved, the surface of the first sub-retaining wall 1401 in contact with the packaging structure 130 is a curved surface, the display panel 100 is easy to bend due to the small stress of the curved surface, and the path of moisture and oxygen entering the display panel 100 from the edge of the display panel 100 can be further extended, so that the possibility of moisture and oxygen entering the display panel 100 from the edge of the display panel 100 is reduced, and the packaging effect of the display panel 100 is further improved.
In other embodiments of the present invention, referring to fig. 3b, a surface of the second retaining wall 1402 contacting the package structure 130 is a curved surface. Therefore, the process is simple, the industrial production is easy, the surface of the second sub-retaining wall 1402 far away from the display area of the display panel 100, which is in contact with the packaging structure 130, is a curved surface, and the stress of the curved surface is small and is arranged at the edge of the display panel 100, so that the display panel 100 is more suitable for being applied to a curved screen, the development trend of the current times is met, the path for moisture and oxygen to enter the display panel 100 from the edge of the display panel 100 can be further prolonged, the possibility that the moisture and oxygen enter the edge of the display panel 100 is reduced, and the packaging effect of the display panel 100 is further improved.
In still other embodiments of the present invention, referring to fig. 3c, the surfaces of the first sub-retaining wall 1401 and the second sub-retaining wall 1402 contacting the package structure 130 are both curved surfaces. Therefore, the surface of the second sub-retaining wall 1402 away from the display area of the display panel 100, which is in contact with the package structure 130, is a curved surface, and the stress of the curved surface is small and is disposed at the edge of the display panel 100, so that the display panel 100 is more suitable for being applied to a curved screen, and meets the current time development trend; in addition, since the surfaces of the first sub-retaining wall 1401 and the second sub-retaining wall 1402 contacting the encapsulation structure 130 are both curved surfaces, the path of moisture and oxygen entering the display panel 100 from the edge of the display panel 100 can be extended to the maximum, so that the possibility of moisture and oxygen entering the edge of the display panel 100 is reduced to the maximum, and the encapsulation effect of the display panel 100 is optimized.
According to an embodiment of the present invention, on the basis that the material forming the retaining wall 140 includes a water absorbing material, further, the retaining wall 140 may be formed of the water absorbing material. Therefore, each part of the retaining wall 140 is formed by the water absorbing material, so that the effect of absorbing moisture and oxygen is better, the external moisture and oxygen can be effectively prevented from invading the inside of the display panel for a longer time, and the packaging effect of the display panel is better.
According to the embodiment of the present invention, on the basis that the material forming the retaining wall 140 includes the water absorbing material, further, the material forming the first sub-retaining wall 1401 does not include the water absorbing material, and the material forming the second sub-retaining wall 1402 includes the water absorbing material. Because the distance the nearer first sub-retaining wall 1401 of display area of display panel 100 can not absorb moisture and oxygen, second sub-retaining wall 1402 distance the display area still has certain distance, can give consideration to when further improving the encapsulation effect the light-emitting of organic light emitting display array 120 guarantees that the encapsulation effect reaches the best and guarantees simultaneously the light-emitting effect of organic light emitting display array 120, so that display panel 100's display effect reaches the best, and can use for a long time, and stability is good, easily industrialization.
According to the embodiment of the invention, the water absorbing material can be an inorganic water absorbing material or an organic water absorbing material. In some embodiments of the invention, the water absorbing material is an organic water absorbing material. Because the stress of the organic material is smaller, the stress at the edge of the display panel 100 can be smaller, and the edge of the display panel 100 is easy to bend, so that the display panel 100 can be more suitable for being applied to a curved screen; meanwhile, when the edge of the display panel 100 is cut, since the organic water absorbing material can absorb moisture and oxygen, the problem that the moisture and oxygen enter the crack of the edge of the display panel 100 when the edge of the display panel 100 is cut can be solved, and the display panel 100 can realize a narrow frame.
In some embodiments of the present invention, the organic water-absorbing material may be silica gel, polyacrylamide, polyvinyl alcohol, or sodium polyacrylate. Therefore, the material source is wide and easy to obtain, the cost is low, the water absorption is good, the stress at the edge of the display panel 100 can be further reduced, the edge of the display panel 100 is easy to bend, and the display panel 100 is more suitable for being applied to a curved screen; meanwhile, when the edge of the display panel 100 is cut, since the effect of absorbing moisture and oxygen by silica gel, polyacrylamide, polyvinyl alcohol, or sodium polyacrylate is better, the problem that the crack of the edge of the display panel 100 enters moisture and oxygen when the edge of the display panel 100 is cut can be further solved, and the display panel 100 can realize a narrow frame.
According to an embodiment of the present invention, the encapsulation structure 130 may include a plurality of inorganic film layers and organic film layers alternately stacked, wherein an orthographic projection of the organic film layers on the back plate 110 overlaps with an orthographic projection of the display area on the back plate 110, and adjacent two inorganic film layers are in contact in a non-display area surrounding the display area. The structure of the display panel 100 of the present embodiment will be described by taking the example that the package structure 130 includes the first inorganic film layer 1301, the first organic film layer 1302, and the second inorganic film layer 1303 that are alternately disposed. Referring to fig. 4, the encapsulation structure 130 of the display panel 100 includes a first inorganic film layer 1301, a first organic film layer 1302, and a second inorganic film layer 1303 alternately disposed, wherein an orthogonal projection of the first organic film layer 1302 on the back plate 110 overlaps an orthogonal projection of the display area of the display panel 100 on the back plate 110, and the first inorganic film layer 1301 and the second inorganic film layer 1302 contact each other in a non-display area surrounding the display area of the display panel 100. Since the bonding force between the first inorganic film layer 1301 and the second inorganic film layer 1303 is stronger than that between the first inorganic film layer 1301 and the first organic film layer 1302, the encapsulation effect of the display panel 100 can be further improved.
According to an embodiment of the present invention, referring to fig. 5a, 5b and 5c, the display panel 100 may further include: the barrier layer 150 is disposed on the surface of the package structure 130 away from the retaining wall 140, and an orthographic projection of the barrier layer 150 on the back plate 110 and an orthographic projection of the retaining wall 140 on the back plate 110 at least partially overlap. In some embodiments of the invention, the barrier layer 150 may be disposed only on a surface of the package structure 130 away from the first sub-retaining wall 1401 (refer to fig. 5a for a structural schematic view), may be disposed only on a surface of the package structure 130 away from the second sub-retaining wall 1402 (refer to fig. 5b for a structural schematic view), and may be disposed on a surface of the package structure 130 away from the first sub-retaining wall 14015 and the second sub-retaining wall 1402 (refer to fig. 5c for a structural schematic view). Therefore, the barrier layer is disposed on the first inorganic film layer 1301 and the second inorganic film layer 1303, so that the first inorganic film layer 1301 and the second inorganic film layer 1303 are combined more tightly, and moisture and oxygen can be further prevented from entering the edge of the display panel 100, and therefore the packaging effect of the display panel 100 can be further improved.
According to an embodiment of the present invention, the material forming the barrier layer 150 may include a water-absorbing material. Still further, the material forming the barrier layer 150 may include an organic water-absorbing material. In some embodiments of the present invention, the material forming the barrier layer 150 may be silica gel, polyacrylamide, polyvinyl alcohol, or sodium polyacrylate. Therefore, the absorption of moisture and oxygen at the edge of the display panel 100 can be enhanced, and meanwhile, the first inorganic film layer 1301 and the second inorganic film layer 1303 are bonded more tightly, so that the moisture and oxygen can be further prevented from entering the edge of the display panel 100, and therefore, the packaging effect of the display panel 100 can be further improved.
In another aspect of the invention, the invention provides a method of fabricating the display panel 100 described above. According to an embodiment of the invention, referring to fig. 6 and 7a, 7b, 7c, the method comprises the steps of:
s100: a back plate 110 having an organic light emitting display array 120 on the surface thereof is provided (see fig. 7a for a schematic structural diagram).
According to an embodiment of the present invention, the process of forming the organic light emitting display array 120 on the surface of the back plate 110 may include vacuum evaporation, chemical vapor deposition, spin coating, inkjet printing, and the like. Therefore, the method is simple and convenient to operate, easy to realize, easy for industrial production, high in yield and low in cost.
S200: the dam 140 is formed around the organic light emitting display array 120 on the surface of the back plate 110 by a patterning process or an inkjet printing method (refer to fig. 7b for a schematic structural diagram).
According to the embodiment of the present invention, the retaining wall 140 can be formed by a patterning process or an inkjet printing method, wherein the process of forming the retaining wall 140 by the inkjet printing method is simple and low in cost, and a curved surface is easily formed on the surface of the retaining wall 140. The patterning process may include steps of forming a pre-formed film layer on the back plate 110, coating a photoresist, exposing, developing, etching, stripping a photoresist, and the like, thereby forming the dam 140.
S300: an encapsulation structure 130 is formed to cover the organic light emitting display array 120 and the retaining walls 140 (see fig. 7c for a schematic structural diagram).
According to an embodiment of the present invention, the process of forming the package structure 130 may include vacuum evaporation, chemical vapor deposition, spin coating, inkjet printing, and the like. Therefore, the method is simple and convenient to operate, easy to realize, easy for industrial production, high in yield and low in cost.
In other embodiments of the present invention, in the above step, S100: forming an organic light emitting display array 120 on the surface of the back plate 110 (the structural schematic diagram refers to fig. 7a), S300: the formation of the encapsulation structure 130 (the schematic structure diagram refers to fig. 3b) covering the organic light emitting display array 120 and the retaining walls 140 is the same as that described above, with reference to fig. 8, 9a to 9b, S200: forming the bank 140 around the organic light emitting display array 120 by a patterning process or an inkjet printing method may further specifically include:
s210: the first sub-barriers 1401 are formed by a patterning process or an inkjet printing method (the structural schematic diagram is shown in fig. 9 a).
According to the embodiment of the present invention, the first sub-retaining wall 1401 may be formed by a patterning process or an inkjet printing process, wherein the process of forming the first sub-retaining wall 1401 by the inkjet printing process is simple and low in cost, and a curved surface may be formed on the surface of the first sub-retaining wall 1401. The patterning process may include steps of forming a pre-formed film layer on the back plate 110, coating a photoresist, exposing, developing, etching, stripping a photoresist, and the like, thereby forming the first sub-stopper 1401.
S220: a second sub-wall 1402 is formed on a side of the first sub-wall 1401 away from the organic light emitting display array 120 by an inkjet printing method (see fig. 9b for a schematic structural diagram).
According to an embodiment of the present invention, a second sub-wall 1402 is formed on a side of the first sub-wall 1401 away from the organic light emitting display array 120 by an inkjet printing method. Therefore, the method is simple, easy to implement, low in cost and easy to form a curved surface on the surface of the second sub-retaining wall 1402.
In still other embodiments of the present invention, in addition to the step S100: forming an organic light emitting display array 120 on the surface of the back plate 110 (the structural schematic diagram refers to fig. 7a), S200: forming a bank 140 around the organic light emitting display array 120 by a patterning process or an inkjet printing method (the structural schematic diagram refers to fig. 7b), S300: in addition to forming the encapsulation structure 130 (the schematic structural diagram refers to fig. 7c) covering the organic light emitting display array 120 and the retaining wall 140, referring to fig. 10 and 11, the method further includes:
s400: a barrier layer 150 is formed on a surface of the package structure 130 away from the retaining wall 140 and at a position corresponding to the retaining wall 140 (fig. 11).
According to an embodiment of the present invention, the process of forming the barrier layer 150 on the surface of the package structure 130 away from the retaining wall 140 and at the position corresponding to the retaining wall 140 may include vacuum evaporation, chemical vapor deposition, spin coating, inkjet printing, and the like. Therefore, the method is simple and convenient to operate, easy to realize, easy for industrial production, high in yield and low in cost.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (7)
1. The utility model provides a display panel, includes the backplate, the backplate surface has organic light emitting display array, be provided with packaging structure on the organic light emitting display array, its characterized in that still includes:
the retaining wall is arranged between the back plate and the packaging structure, is arranged around the display area of the display panel, and has a gap with the display area, the packaging structure comprises at least two layers of inorganic films and organic films arranged between the inorganic films, the inorganic films extend to the non-display area of the display panel, the organic films extend to the edge of the display area, and the inorganic films cover the retaining wall and are attached to the retaining wall; the barrier layer is arranged on the surface of the packaging structure far away from the retaining wall, and at least a part of orthographic projection of the barrier layer on the back plate is overlapped with that of the retaining wall on the back plate,
the barricade includes first sub-barricade and second sub-barricade, just first sub-barricade with second sub-barricade is keeping away from interval setting in the direction of display area, just first sub-barricade is close to the display area sets up, forms the material of first sub-barricade does not contain the material that absorbs water, and forms the material of second sub-barricade contains the material that absorbs water.
2. The display panel of claim 1, wherein a surface of at least one of the first sub-dam and the second sub-dam in contact with the package structure is a curved surface.
3. The display panel according to claim 1, wherein the second sub-barriers are formed of the water absorbent material.
4. The display panel according to claim 1, wherein the water absorbing material is an organic material.
5. The display panel according to claim 1, wherein a material forming the barrier layer comprises a water absorbing material.
6. A method of manufacturing the display panel of any one of claims 1-5, comprising:
providing a back plate;
forming a retaining wall around the organic light emitting display array on the surface of the back plate by a composition process or an ink jet printing method;
forming a packaging structure covering the organic light-emitting display array and the retaining wall;
and forming a barrier layer on the surface of the packaging structure far away from the retaining wall and at a position corresponding to the retaining wall.
7. The method of claim 6, wherein forming the retaining wall comprises:
forming a first sub-retaining wall by a composition process or an ink-jet printing method;
and forming a second sub-retaining wall on one side of the first sub-retaining wall far away from the organic light-emitting display array by an ink-jet printing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810864381.6A CN109037480B (en) | 2018-08-01 | 2018-08-01 | Display panel and manufacturing method thereof |
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| CN109728164A (en) * | 2019-01-03 | 2019-05-07 | 京东方科技集团股份有限公司 | A kind of display panel and preparation method thereof, OLED display |
| US11398523B2 (en) | 2019-01-23 | 2022-07-26 | Boe Technology Group Co., Ltd. | Array substrate and manufacturing method thereof, display panel and display device |
| CN110265579A (en) | 2019-06-27 | 2019-09-20 | 京东方科技集团股份有限公司 | A kind of display panel and preparation method thereof, display device |
| CN111326674B (en) * | 2019-12-18 | 2022-04-05 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN113517315A (en) * | 2020-04-09 | 2021-10-19 | 上海和辉光电有限公司 | Flexible organic electroluminescent display panel and display device |
| CN111834543B (en) * | 2020-06-28 | 2022-08-30 | 昆山国显光电有限公司 | Flexible display panel and display device |
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