Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel comprises an organic layer, an isolation structure and an organic functional layer. The isolation structure is arranged on the organic layer; the organic functional layer is arranged on the isolation structure and the organic layer; wherein the organic layer forms a first undercut opening at the edge of the isolation structure, the side surface of the isolation structure forms a second undercut opening, and the organic functional layer is separated at the first undercut opening and / or the second undercut opening; according to the display panel, the organic functional layer can be more effectively isolated, the problems such as water vapor invasion or electric leakage can be avoided, the stability of the display panel is enhanced, and the display effect of the display panel is improved.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) display panels have the characteristics of low power consumption, fast response speed, wide viewing angle, etc., and have broad application prospects. At present, OLED display technology has been widely used in various electronic products, ranging from small electronic products such as smart bracelets, smart watches, smart phones, tablet computers, etc. to large electronic products such as laptops, desktop computers, and televisions.

[0003] In an OLED display panel, when the organic functional layer (for example, a light-emitting layer, an electron layer, and a hole layer) is prepared by an evaporation process, it is usually entirely covered in the display panel. However, when the organic functional layer is entirely covered, some problems may easily arise, such as water vapor intrusion or leakage, which may reduce the stability of the display panel and affect the display effect of the display panel. Summary of the invention

[0004] The embodiments of the present application provide a display panel and a display device, which can effectively isolate the organic functional layer, enhance the stability of the display panel, and improve the display effect of the display panel.

[0005] An embodiment of the present application provides a display panel, comprising:

[0006] Organic layer;

[0007] An isolation structure, disposed on the organic layer;

[0008] An organic functional layer, disposed on the isolation structure and the organic layer;

[0009] The organic layer forms a first undercut opening at the edge of the isolation structure, the side surface of the isolation structure forms a second undercut opening, and the organic functional layer is separated at the first undercut opening and / or the second undercut opening.

[0010] In one embodiment of the present application, the organic layer includes a main body and a protruding portion connected to a side of the main body close to the isolation structure, and the isolation structure is disposed on a side of the protruding portion away from the main body;

[0011] The raised portion includes a first surface close to one side of the isolation structure and a first side surface connected to the first surface, and at least a portion of the first side surface is retracted inward toward the center of the raised portion relative to an edge of the isolation structure close to the raised portion to form the first undercut opening.

[0012] In one embodiment of the present application, the isolation structure includes a second surface away from the side of the protrusion, a third surface close to the side of the protrusion, and a second side surface connected between the second surface and the third surface, and a partial area of ​​the second side surface is retracted inward toward the center of the isolation structure to form the second bottom cut opening.

[0013] In one embodiment of the present application, the isolation structure includes a first sublayer, a second sublayer, and a third sublayer which are stacked, and the second sublayer is located between the first sublayer and the third sublayer;

[0014] At the second side surface, the edge of the second sub-layer is retracted inwardly toward the center of the second sub-layer relative to the edge of the first sub-layer and the edge of the third sub-layer to form the second undercut opening.

[0015] In one embodiment of the present application, the organic functional layer includes a first sub-portion located on a side of the isolation structure away from the protrusion and a second sub-portion located on a side of the main body close to the protrusion, and the first sub-portion and the second sub-portion are spaced apart.

[0016] In one embodiment of the present application, the organic functional layer includes a first sub-portion located on a side of the isolation structure away from the protrusion, a second sub-portion located on a side of the main body close to the protrusion, and a third sub-portion located in the second bottom cut opening, and the first sub-portion, the second sub-portion and the third sub-portion are spaced apart from each other.

[0017] In an embodiment of the present application, the first undercut opening and the second undercut opening at least partially overlap along the thickness direction of the display panel.

[0018] In one embodiment of the present application, the maximum depth of the first undercut opening along the direction from the edge of the protrusion to the center of the protrusion is greater than or equal to the maximum depth of the second undercut opening along the direction from the edge of the isolation structure to the center of the isolation structure.

[0019] In one embodiment of the present application, the display panel includes a plurality of the isolation structures arranged at intervals, a groove located between two adjacent isolation structures, and a filling portion arranged between two adjacent isolation structures, wherein the filling portion fills the groove and protrudes from a surface of the isolation structure away from the organic layer;

[0020] The first undercut opening and the second undercut opening are at least located at a side of the isolation structure away from the filling portion.

[0021] In one embodiment of the present application, the organic functional layer includes an organic light-emitting layer, the display panel also includes a display area and a non-display area adjacent to the display area, and the isolation structure is arranged in the display area and / or the non-display area.

[0022] In one embodiment of the present application, the isolation structure is disposed around the display area.

[0023] In one embodiment of the present application, the display panel further includes an opening area adjacent to the display area, the display panel is provided with an opening located within the opening area, the opening passes through a portion of the film layer in the display panel, and the isolation structure is arranged around the opening area.

[0024] In an embodiment of the present application, the display area includes a plurality of pixel areas, and the isolation structure is disposed between adjacent pixel areas.

[0025] In one embodiment of the present application, the display panel further includes:

[0026] substrate;

[0027] A thin film transistor layer is disposed on the substrate;

[0028] A planar layer, disposed on a side of the thin film transistor layer away from the substrate;

[0029] A pixel definition layer is arranged on a side of the planar layer away from the thin film transistor layer;

[0030] Wherein, the organic layer is reused as the planar layer or the pixel definition layer.

[0031] In one embodiment of the present application, when the organic layer is the planar layer, the display panel further comprises an anode layer disposed on the planar layer, the anode layer comprises anodes disposed at intervals and the isolation structure, and a first opening corresponding to the anode and a second opening corresponding to the isolation structure are opened in the pixel definition layer;

[0032] Alternatively, when the organic layer is the planar layer, the planar layer includes a plurality of planar sub-layers, the display panel further includes a conductive layer disposed between adjacent planar sub-layers, and the conductive layer includes a first transfer line and the isolation structure.

[0033] In an embodiment of the present application, when the organic layer is the pixel definition layer, the isolation structure is disposed on a side of the pixel definition layer away from the planar layer.

[0034] In one embodiment of the present application, the organic functional layer further includes a light-emitting auxiliary layer stacked with the organic light-emitting layer, and the light-emitting auxiliary layer includes at least one of an electron injection layer, an electron transport layer, a hole injection layer and a hole transport layer.

[0035] According to the above-mentioned purpose of the present application, an embodiment of the present application further provides a display device, which includes the display panel.

[0036] The present application provides a display panel and a display device. By setting an isolation structure on an organic layer, a first bottom cut opening can be formed between the isolation structure and the organic layer, and a second bottom cut opening can be formed in the isolation structure. The two bottom cut openings can cooperate to more effectively isolate the organic functional layer, avoid problems such as water vapor intrusion or leakage, enhance the stability of the display panel, and improve the display effect of the display panel.

[0037] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0039] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0040] Figure 1 A schematic diagram of a partition structure provided in an embodiment of the present application;

[0041] Figure 2 A schematic diagram of a first structure of a display panel provided in an embodiment of the present application;

[0042] Figure 3 Another structural schematic diagram of a partition structure provided in an embodiment of the present application;

[0043] Figure 4 A schematic diagram of a first planar distribution structure of a display panel provided in an embodiment of the present application;

[0044] Figure 5 A second structural schematic diagram of a display panel provided in an embodiment of the present application;

[0045] Figure 6 A third structural schematic diagram of a display panel provided in an embodiment of the present application;

[0046] Figure 7 A schematic diagram of a second planar distribution structure of a display panel provided in an embodiment of the present application;

[0047] Figure 8 A fourth structural schematic diagram of a display panel provided in an embodiment of the present application;

[0048] Fig. 9 A fifth structural schematic diagram of a display panel provided in an embodiment of the present application;

[0049] Fig.10 A sixth structural schematic diagram of a display panel provided in an embodiment of the present application;

[0050] Fig.11 A schematic diagram of a third planar distribution structure of a display panel provided in an embodiment of the present application;

[0051] Fig.12 A seventh structural schematic diagram of a display panel provided in an embodiment of the present application;

[0052] Fig.13 An eighth structural schematic diagram of a display panel provided in an embodiment of the present application;

[0053] Fig.14 A ninth structural schematic diagram of a display panel provided in an embodiment of the present application;

[0054] Fig.15 A schematic diagram of a planar distribution structure of a pixel area of ​​a display panel provided in an embodiment of the present application;

[0055] Fig.16 A tenth structural schematic diagram of a display panel provided in an embodiment of the present application;

[0056] Figures 17 to 19 A structural schematic diagram of the manufacturing process of the isolation structure of the display panel provided in an embodiment of the present application.

[0057] Description of reference numerals:

[0058] 10, organic layer; 11, main body; 12, raised portion; 101, first undercut opening; 121, first surface; 122, first side surface; 110, display area; 120, non-display area; 130, opening area; 1101, pixel area; 1100, organic material layer;

[0059] 20, isolation structure; 21, first sublayer; 22, second sublayer; 23, third sublayer; 201, second undercut opening; 202, groove; 203, notch; 211, second surface; 212, third surface; 213, second side; 24, filling portion; 200, isolation material layer; 210, first material layer; 220, second material layer; 230, third material layer;

[0060] 30. Organic functional layer; 31. First sub-section; 32. Second sub-section; 33. Third sub-section;

[0061] 40. Substrate;

[0062] 50, thin film transistor layer; 51, gate insulating layer; 52, first interlayer dielectric layer; 53, second interlayer dielectric layer; 54, active layer; 55, gate; 56, source; 57, drain; 58, second transfer line; 501, opening;

[0063] 60. Flat layer; 61. First flat sublayer; 62. Second flat sublayer;

[0064] 70, pixel definition layer; 701, first opening; 702, second opening; 703, third opening;

[0065] 81. Conductive layer; 811. First transfer line; 82. Anode layer; 821. Anode; 83. Cathode layer. DETAILED DESCRIPTION

[0066] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with 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 of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0067] Please refer to Figure 1 An embodiment of the present application provides a display panel, which includes an organic layer 10, an isolation structure 20 and an organic functional layer 30; the isolation structure 20 is arranged on the organic layer 10; the organic functional layer 30 is arranged on the isolation structure 20 and the organic layer 10.

[0068] The organic layer 10 forms a first undercut opening 101 at the edge of the isolation structure 20 , the side of the isolation structure 20 forms a second undercut opening 201 , and the organic functional layer 30 is separated at the first undercut opening 101 and / or the second undercut opening 201 .

[0069] During the implementation of the application, the embodiment of the present application sets the isolation structure 20 on the organic layer 10, and the isolation structure 20 can form the first bottom cut opening 101 between the organic layer 10, and the second bottom cut opening 201 can be formed in the isolation structure 20, so that the two bottom cut openings can cooperate to more effectively isolate the organic functional layer 30, avoid problems such as water vapor intrusion or leakage, enhance the stability of the display panel, and improve the display effect of the display panel.

[0070] Specifically, please combine Figure 1 as well as Figure 2 In some embodiments, the display panel includes a substrate 40, a thin film transistor layer 50 disposed on the substrate 40, a planarization layer 60 disposed on a side of the thin film transistor layer 50 away from the substrate 40, and a pixel definition layer 70 disposed on a side of the planarization layer 60 away from the thin film transistor layer 50; the organic functional layer 30 at least covers the pixel definition layer 70.

[0071] In some embodiments, the thin film transistor layer 50 includes a gate insulating layer 51 disposed on the substrate 40, a first interlayer dielectric layer 52 disposed on a side of the gate insulating layer 51 away from the substrate 40, and a second interlayer dielectric layer 53 disposed on a side of the first interlayer dielectric layer 52 away from the gate insulating layer 51; the thin film transistor layer 50 also includes an active layer 54 disposed on the substrate 40 and covered by the gate insulating layer 51, a gate 55 disposed on the gate insulating layer 51 and covered by the first interlayer dielectric layer 52, and a source 56 and a drain 57 disposed on the first interlayer dielectric layer 52 and covered by the second interlayer dielectric layer 53; the gate 55 is disposed on a side of the active layer 54 away from the substrate 40, and the source 56 and the drain 57 pass through the first interlayer dielectric layer 52 and the gate insulating layer 51 and overlap the opposite sides of the active layer 54.

[0072] In some embodiments, the display panel further includes a second connecting line 58 disposed on the second interlayer dielectric layer 53 and covered by the planar layer 60 . The second connecting line 58 may pass through the second interlayer dielectric layer 53 to be connected to the drain electrode 57 .

[0073] In some embodiments, the planar layer 60 may include a plurality of planar sub-layers and a conductive layer 81 disposed between adjacent planar sub-layers.

[0074] Among them, the flat layer 60 may include a first flat sub-layer 61 and a second flat sub-layer 62 which are stacked; the display panel also includes the conductive layer 81 arranged between the first flat sub-layer 61 and the second flat sub-layer 62, and the conductive layer 81 includes a first adapter line 811 arranged on the first flat sub-layer 61 and covered by the second flat sub-layer 62, and the first adapter line 811 passes through the first flat sub-layer 61 and is connected to the second adapter line 58.

[0075] In some embodiments, the display panel also includes an anode layer 82 disposed on the flat layer 60, and the anode layer 82 includes a plurality of anodes 821 disposed on the flat layer 60; that is, the anodes 821 are disposed on a side of the second flat sub-layer 62 away from the first flat sub-layer 61; the diagram provided in the embodiment of the present application only shows one of the anodes 821 as an example for illustration.

[0076] Furthermore, the pixel definition layer 70 is disposed on a side of the planar layer 60 away from the thin film transistor layer 50 , and a plurality of first openings 701 corresponding to the plurality of anodes 821 are opened in the pixel definition layer 70 , and the first openings 701 expose the corresponding upper surfaces of the anodes 821 .

[0077] In some embodiments, the organic functional layer 30 covers a side of the pixel definition layer 70 away from the planar layer 60 and extends into the first opening 701 . The organic functional layer 30 extending into the first opening 701 is located on the upper surface of the anode 821 .

[0078] In some embodiments, the display panel further includes a cathode layer (not shown in the figure) disposed on a side of the organic functional layer 30 away from the pixel definition layer 70 .

[0079] It should be noted that the organic functional layer 30 may include an organic light-emitting layer. The embodiment of the present application isolates the organic functional layer 30 by setting the isolation structure 20, thereby preventing water vapor from invading the display panel from the organic functional layer 30 and reducing the probability of generating lateral leakage current in the organic functional layer 30.

[0080] In some embodiments, the organic functional layer 30 further includes a light-emitting auxiliary layer stacked with the organic light-emitting layer, and the light-emitting auxiliary layer includes at least one of an electron injection layer, an electron transport layer, a hole injection layer and a hole transport layer.

[0081] Among them, the organic layer 10 forms a first undercut opening 101 at the edge of the isolation structure 20, the side of the isolation structure 20 forms a second undercut opening 201, and the organic functional layer 30 is separated at the first undercut opening 101 and / or the second undercut opening 201; that is, in the embodiment of the present application, a double undercut opening can be formed in the isolation structure 20 and the organic layer 10 therebelow, which can be more conducive to isolating the organic functional layer 30, effectively preventing water vapor from invading the display panel from the organic functional layer 30, and can reduce the probability of generating lateral leakage current in the organic functional layer 30.

[0082] In some embodiments, the organic layer 10 includes a main body 11 and a raised portion 12 connected to the main body 11 on a side close to the isolation structure 20, and the isolation structure 20 is arranged on a side of the raised portion 12 away from the main body 11; wherein the raised portion 12 includes a first surface 121 close to the isolation structure 20 and a first side surface 122 connected to the first surface 121, and at least a portion of the first side surface 122 is retracted relative to an edge of the isolation structure 20 on a side close to the raised portion 12 toward a center direction close to the raised portion 12 to form the first undercut opening 101; it can be understood that the The isolation structure 20 can be prepared by metal material, or by a material different from that of the organic layer 10. When the isolation structure 20 is formed on the organic layer 10 and then the organic layer 10 is etched, the thickness of the organic layer 10 is reduced, and the thinned portion is the main body 11, while the portion blocked by the isolation structure 20 is not etched, thereby forming the raised portion 12. Therefore, the raised portion 12 is located between the isolation structure 20 and the main body 11; the organic layer 10 will etch a portion of the isolation structure 20 at the edge of the isolation structure 20 to the bottom of the isolation structure 20 to form the first bottom cut opening 101.

[0083] In some embodiments, the isolation structure 20 includes a second surface 211 away from the side of the protrusion 12, a third surface 212 close to the side of the protrusion 12, and a second side surface 213 connected between the second surface 211 and the third surface 212, and a partial area of ​​the second side surface 213 is retracted inward toward the direction close to the center of the isolation structure 20 to form the second bottom cut opening 201.

[0084] It should be noted that the isolation structure 20 can be prepared using multiple sub-layers, and the etching rate of the middle sub-layer is greater than the etching rate of the upper and lower sides, thereby causing the side of the isolation structure 20 to be side-etched to form the second bottom cut opening 201.

[0085] In some embodiments, the isolation structure 20 includes a first sublayer 21, a second sublayer 22 and a third sublayer 23 which are stacked, the second sublayer 22 is located between the first sublayer 21 and the third sublayer 23, and the first sublayer 21 is located between the second sublayer 22 and the protrusion 12.

[0086] Wherein, at the second side surface 213 , the edge of the second sub-layer 22 is retracted inwardly toward the center of the second sub-layer 22 relative to the edge of the first sub-layer 21 and the edge of the third sub-layer 23 to form the second undercut opening 201 .

[0087] In some embodiments, the materials of the first sublayer 21 and the third sublayer 23 may include at least one of Ti, Mo and indium tin oxide (ITO), and the material of the second sublayer 22 may include at least one of Al and Ag; for example, the stacking structure of the isolation structure 20 may be Ti / Al / Ti, Mo / Al / Mo or ITO / Ag / ITO.

[0088] Therefore, the organic functional layer 30 will be separated at the first undercut opening 101 and the second undercut opening 201; in some embodiments, the organic functional layer 30 includes a first sub-portion 31 located on the side of the isolation structure 20 away from the protrusion 12 and a second sub-portion 32 located on the side of the main body 11 close to the protrusion 12, and the first sub-portion 31 and the second sub-portion 32 are arranged at intervals.

[0089] In other embodiments, the organic functional layer 30 includes a first sub-portion 31 located on the side of the isolation structure 20 away from the protrusion 12, a second sub-portion 32 located on the side of the main body 11 close to the protrusion 12, and a third sub-portion 33 located in the second bottom cut opening 201, and the first sub-portion 31, the second sub-portion 32 and the third sub-portion 33 are spaced apart from each other.

[0090] Continuing from the above, the embodiment of the present application sets up an isolation structure 20 with multiple sub-layers with different etching rates, and cooperates with the organic layer 10 to form the first undercut opening 101 and the second undercut opening 201 above and below, so that the double undercut opening can be more conducive to isolating the organic functional layer 30 to isolate the water vapor intrusion channel and the leakage channel.

[0091] In some embodiments, Figure 1As shown, the first undercut opening 101 can be located on opposite sides of the isolation structure 20, and the second undercut opening 201 can also be located on opposite sides of the isolation structure 20, and the first undercut opening 101 and the second undercut opening 201 at least partially overlap along the thickness direction of the display panel.

[0092] In some embodiments, the maximum depth of the first undercut opening 101 along the direction from the edge of the protrusion 12 to the center of the protrusion 12 is greater than or equal to the maximum depth of the second undercut opening 201 along the direction from the edge of the isolation structure 20 to the center of the isolation structure 20 .

[0093] In other embodiments of the present application, the maximum depth of the first bottom cut opening 101 in the direction from the edge of the protrusion 12 to the center of the protrusion 12 may also be smaller than the maximum depth of the second bottom cut opening 201 in the direction from the edge of the isolation structure 20 to the center of the isolation structure 20. The specific depth can be set according to actual needs and is not limited here.

[0094] In some embodiments, Figure 3 As shown, the isolation structure 20 may include multiple ones, and every two or more adjacent ones form a group. In the embodiment of the present application, every two adjacent isolation structures 20 form a group, and a groove 202 is formed between a group of two adjacent isolation structures 20; the display panel also includes a filling portion 24 arranged in the groove 202, and the filling portion 24 is arranged between the two adjacent isolation structures 20 and fills the groove 202, and the filling portion 24 protrudes from the surface of the isolation structure 20 away from the organic layer 10; and the first undercut opening 101 and the second undercut opening 201 are at least located on the side of the isolation structure 20 away from the filling portion 24.

[0095] It should be noted that the first undercut opening 101 and the second undercut opening 201 may not be formed in the groove 202, or the first undercut opening 101 and the second undercut opening 201 may be formed, but the first undercut opening 101 and the second undercut opening 201 in the groove 202 will be filled with the filling portion 24; the present application can effectively improve the structural stability of the isolation structure 20 and reduce the probability of collapse and deformation of the isolation structure 20 by setting a filling portion 24 between multiple isolation structures 20 in a group, so as to further improve the isolation success rate of the isolation structure 20.

[0096] In the embodiments of this application, please combine Figure 1 as well as Figure 2The display panel also includes a display area 110 and a non-display area 120 adjacent to the display area 110, and the isolation structure 20 is arranged in the display area 110 and / or the non-display area 120; that is, the isolation structure 20 can be set at multiple positions of the display panel to achieve corresponding functions.

[0097] In one embodiment of the present application, please combine Figure 1 , Figure 2 as well as Figure 4 , the isolation structure 20 is disposed around the display area 110 .

[0098] In some embodiments, the isolation structure 20 may be disposed in the non-display area 120, and the number of the isolation structures 20 may be multiple, that is, multiple isolation structures 20 are disposed concentrically around the display area 110, and the multiple isolation structures 20 may be in the form of Figure 3 The structure shown is set, and in the embodiment of the present application Figure 1 The isolation structure 20 shown is taken as an example for description.

[0099] It can be understood that the isolation structure 20 is arranged around the display area 110, so as to block the part of the organic functional layer 30 entering the display area 110 from the non-display area 120, so as to block the water vapor intrusion channel of the organic functional layer 30, reduce the probability of device damage due to water vapor intrusion of the display panel, and improve the stability of the display panel.

[0100] Specifically, in this embodiment, the organic layer 10 is reused as the pixel definition layer 70, and the isolation structure 20 is arranged on the side of the pixel definition layer 70 away from the planar layer 60. Then, when the organic functional layer 30 extends to the isolation structure 20, it can be isolated at the first undercut opening 101 and / or the second undercut opening 201 to block the water vapor intrusion channel.

[0101] In another embodiment of the present application, please combine Figure 1 , Figure 4 as well as Figure 5 , the isolation structure 20 is disposed around the display area 110 .

[0102] In some embodiments, the isolation structure 20 may be disposed in the non-display area 120, and the number of the isolation structures 20 may be multiple, that is, multiple isolation structures 20 are disposed concentrically around the display area 110, and the multiple isolation structures 20 may be in the form of Figure 3 The structure shown is set, and in the embodiment of the present application Figure 1 The isolation structure 20 shown is taken as an example for description.

[0103] It can be understood that the isolation structure 20 is arranged around the display area 110, so as to block the part of the organic functional layer 30 entering the display area 110 from the non-display area 120, so as to block the water vapor intrusion channel of the organic functional layer 30, reduce the probability of device damage due to water vapor intrusion of the display panel, and improve the stability of the display panel.

[0104] Specifically, in this embodiment, the organic layer 10 is reused as the flat layer 60, and further, the organic layer 10 is reused as the second flat sub-layer 62, and the isolation structure 20 is arranged on the side of the second flat sub-layer 62 away from the first flat sub-layer 61, so that when the organic functional layer 30 extends to the isolation structure 20, it can be isolated at the first undercut opening 101 and / or the second undercut opening 201 to isolate the water vapor intrusion channel.

[0105] In some embodiments, the anode layer 82 may include the anode 821 and the isolation structure 20 , that is, the isolation structure 20 may be formed in the same process as the anode 821 , thereby saving process steps and reducing process costs.

[0106] In some embodiments, since the isolation structure 20 is disposed on the second flat sub-layer 62, the pixel definition layer 70 is removed at a position corresponding to the isolation structure 20; therefore, when the isolation structure 20 is disposed around the display area 110, the pixel definition layer 70 is also isolated on the peripheral side of the display area 110, thereby also isolating the water vapor intrusion channel in the pixel definition layer 70, further improving the water vapor blocking effect of the display panel, and improving the stability and service life of the display panel.

[0107] In another embodiment of the present application, please combine Figure 1 , Figure 4 as well as Figure 6 , the isolation structure 20 is disposed around the display area 110 .

[0108] In some embodiments, the isolation structure 20 may be disposed in the non-display area 120, and the number of the isolation structures 20 may be multiple, that is, multiple isolation structures 20 are disposed concentrically around the display area 110, and the multiple isolation structures 20 may be in the form of Figure 3 The structure shown is set, and in the embodiment of the present application Figure 1 The isolation structure 20 shown is taken as an example for description.

[0109] It can be understood that the isolation structure 20 is arranged around the display area 110, so as to block the part of the organic functional layer 30 entering the display area 110 from the non-display area 120, so as to block the water vapor intrusion channel of the organic functional layer 30, reduce the probability of device damage due to water vapor intrusion of the display panel, and improve the stability of the display panel.

[0110] Specifically, in this embodiment, the organic layer 10 is reused as the planar layer 60, and further, the organic layer 10 is reused as the first planar sub-layer 61, and the isolation structure 20 is arranged on the side of the first planar sub-layer 61 away from the second interlayer dielectric layer 53, so that when the organic functional layer 30 extends to the isolation structure 20, it can be isolated at the first undercut opening 101 and / or the second undercut opening 201 to isolate the water vapor intrusion channel.

[0111] In some embodiments, the conductive layer 81 may include the first transfer line 811 and the isolation structure 20 , that is, the isolation structure 20 may be formed in the same process as the first transfer line 811 , thereby saving process steps and reducing process costs.

[0112] In some embodiments, since the isolation structure 20 is disposed on the first flat sub-layer 61, the pixel definition layer 70 and the second flat sub-layer 62 are removed at positions corresponding to the isolation structure 20; therefore, when the isolation structure 20 is disposed around the display area 110, the pixel definition layer 70 and the second flat sub-layer 62 are also isolated on the peripheral side of the display area 110, and thus the water vapor intrusion channels in the pixel definition layer 70 and the second flat sub-layer 62 can also be isolated, thereby further improving the water vapor blocking effect of the display panel, and improving the stability and service life of the display panel.

[0113] In one embodiment of the present application, please combine Figure 1 , Figure 7 as well as Figure 8 The display panel also includes an opening area 130 adjacent to the display area 110, and an opening 501 located in the opening area 130 is opened in the display panel. The opening 501 can pass through part of the film layer in the display panel to improve the transmittance of the opening area 130; and the opening area 130 can be used to place optical sensors, such as cameras and other devices.

[0114] In some embodiments, the opening 501 may pass through the thin film transistor layer 50 , the planarization layer 60 , the pixel definition layer 70 , and the organic functional layer 30 .

[0115] In this embodiment, the isolation structure 20 is arranged around the opening area 130, that is, the isolation structure 20 is arranged around the opening 501, so as to be able to isolate the part of the organic functional layer 30 entering the display area 110 from the non-display area 120, so as to isolate the water vapor intrusion channel of the organic functional layer 30, reduce the probability of device damage due to water vapor intrusion of the display panel, and improve the stability of the display panel.

[0116] Specifically, in this embodiment, the organic layer 10 is reused as the pixel definition layer 70, and the isolation structure 20 is arranged on the side of the pixel definition layer 70 away from the planar layer 60. Then, when the organic functional layer 30 extends from the opening area 130 to the isolation structure 20, it can be isolated at the first undercut opening 101 and / or the second undercut opening 201 to block the water vapor intrusion channel.

[0117] In another embodiment of the present application, please combine Figure 1 , Figure 7 as well as Fig. 9 The display panel also includes an opening area 130 adjacent to the display area 110, and an opening 501 located in the opening area 130 is opened in the display panel. The opening 501 can pass through part of the film layer in the display panel to improve the transmittance of the opening area 130; and the opening area 130 can be used to place optical sensors, such as cameras and other devices.

[0118] In some embodiments, the opening 501 may pass through the thin film transistor layer 50 , the planarization layer 60 , the pixel definition layer 70 , and the organic functional layer 30 .

[0119] In this embodiment, the isolation structure 20 is arranged around the opening area 130, that is, the isolation structure 20 is arranged around the opening 501, so as to be able to isolate the part of the organic functional layer 30 entering the display area 110 from the non-display area 120, so as to isolate the water vapor intrusion channel of the organic functional layer 30, reduce the probability of device damage due to water vapor intrusion of the display panel, and improve the stability of the display panel.

[0120] Specifically, in this embodiment, the organic layer 10 is reused as the flat layer 60, and further, the organic layer 10 is reused as the second flat sub-layer 62, and the isolation structure 20 is arranged on the side of the second flat sub-layer 62 away from the first flat sub-layer 61, so that when the organic functional layer 30 extends from the opening area 130 to the isolation structure 20, it can be isolated at the first undercut opening 101 and / or the second undercut opening 201 to isolate the water vapor intrusion channel.

[0121] In some embodiments, Figure 5 Similarly to the illustrated embodiment, the anode layer 82 may include the anode 821 and the isolation structure 20, that is, the isolation structure 20 may be formed in the same process as the anode 821, thereby saving process steps and reducing process costs.

[0122] In some embodiments, since the isolation structure 20 is arranged on the second flat sub-layer 62, the pixel definition layer 70 corresponding to the isolation structure 20 will be removed; then a second opening 702 corresponding to the isolation structure 20 is also opened in the pixel definition layer 70, so that the organic functional layer 30 can extend into the second opening 702 and be isolated by the isolation structure 20; therefore, when the isolation structure 20 is arranged around the opening area 130, the second opening 702 is also arranged around the opening area 130, and can also isolate the water vapor intrusion channel in the pixel definition layer 70, further improve the water vapor blocking effect of the display panel, and improve the stability and service life of the display panel.

[0123] In another embodiment of the present application, please combine Figure 1 , Figure 7 as well as Fig.10 The display panel also includes an opening area 130 adjacent to the display area 110, and an opening 501 located in the opening area 130 is opened in the display panel. The opening 501 can pass through part of the film layer in the display panel to improve the transmittance of the opening area 130; and the opening area 130 can be used to place optical sensors, such as cameras and other devices.

[0124] In some embodiments, the opening 501 may pass through the thin film transistor layer 50 , the planarization layer 60 , the pixel definition layer 70 , and the organic functional layer 30 .

[0125] In this embodiment, the isolation structure 20 is arranged around the opening area 130, that is, the isolation structure 20 is arranged around the opening 501, so as to be able to isolate the part of the organic functional layer 30 entering the display area 110 from the non-display area 120, so as to isolate the water vapor intrusion channel of the organic functional layer 30, reduce the probability of device damage due to water vapor intrusion of the display panel, and improve the stability of the display panel.

[0126] Specifically, in this embodiment, the organic layer 10 is reused as the planar layer 60, and further, the organic layer 10 is reused as the first planar sub-layer 61, and the isolation structure 20 is arranged on the side of the first planar sub-layer 61 away from the first interlayer dielectric layer 52, so that when the organic functional layer 30 extends from the opening area 130 to the isolation structure 20, it can be isolated at the first undercut opening 101 and / or the second undercut opening 201 to isolate the water vapor intrusion channel.

[0127] In some embodiments, Figure 6 Similarly to the illustrated embodiment, the conductive layer 81 may include the first adapter line 811 and the isolation structure 20, that is, the isolation structure 20 may be formed in the same process as the first adapter line 811, thereby saving process steps and reducing process costs.

[0128] In some embodiments, since the isolation structure 20 is arranged on the first flat sub-layer 61, the pixel definition layer 70 and the second flat sub-layer 62 corresponding to the isolation structure 20 will be removed; then a second opening 702 corresponding to the isolation structure 20 is also opened in the pixel definition layer 70, and the second flat sub-layer 62 forms a third opening 703 corresponding to the second opening 702, and the second opening 702 and the third opening 703 are connected; so that the organic functional layer 30 can extend to the second opening 702 and the third opening 703 and be isolated by the isolation structure 20; therefore, when the isolation structure 20 is arranged around the opening area 130, the second opening 702 and the third opening 703 are also arranged around the opening area 130, and can also isolate the water vapor intrusion channel in the pixel definition layer 70 and the second flat sub-layer 62, further improving the water vapor blocking effect of the display panel, and improving the stability and service life of the display panel.

[0129] In another embodiment of the present application, please combine Figure 1 , Fig.11 as well as Fig.12 The display area 110 includes a plurality of pixel areas 1101 , and the plurality of pixel areas 1101 are arranged corresponding to the plurality of first openings 701 in the pixel definition layer 70 ; in the present embodiment, the isolation structure 20 is located between adjacent pixel areas 1101 .

[0130] Specifically, the isolation structure 20 can be arranged around each of the pixel areas 1101, that is, the isolation structure 20 is arranged around the first opening 701, thereby being able to isolate the portion of the organic functional layer 30 that enters other pixel areas 1101 from the pixel area 1101, thereby being able to isolate the leakage path, reduce the leakage current of the display panel, and improve the stability of the display panel; in addition, it can also isolate the water vapor intrusion channel in the organic functional layer 30 that enters other pixel areas 1101 from the pixel area 1101, thereby reducing the probability of device damage to the display panel due to water vapor intrusion and improving the stability of the display panel.

[0131] Specifically, in this embodiment, the organic layer 10 is reused as the pixel definition layer 70, and the isolation structure 20 is arranged on the side of the pixel definition layer 70 away from the planar layer 60, so that when the organic functional layer 30 extends from the pixel area 1101 to the isolation structure 20, it can be isolated at the first undercut opening 101 and / or the second undercut opening 201, thereby isolating the leakage path, reducing the leakage current of the display panel, and improving the stability of the display panel; in addition, the water vapor intrusion channel can also be isolated.

[0132] In another embodiment of the present application, please combine Figure 1 , Fig.11 as well as Fig.13 The display area 110 includes a plurality of pixel areas 1101 , and the plurality of pixel areas 1101 are arranged corresponding to the plurality of first openings 701 in the pixel definition layer 70 ; in the present embodiment, the isolation structure 20 is located between adjacent pixel areas 1101 .

[0133] The isolation structure 20 can be arranged around each of the pixel areas 1101, that is, the isolation structure 20 is arranged around the first opening 701, thereby being able to isolate the portion of the organic functional layer 30 that enters other pixel areas 1101 from the pixel area 1101, thereby being able to isolate the leakage path, reduce the leakage current of the display panel, and improve the stability of the display panel; in addition, it can also isolate the water vapor intrusion channel from the pixel area 1101 in the organic functional layer 30 to the other pixel areas 1101, thereby reducing the probability of device damage to the display panel due to water vapor intrusion and improving the stability of the display panel.

[0134] Specifically, in this embodiment, the organic layer 10 is reused as the flat layer 60, and further, the organic layer 10 is reused as the second flat sub-layer 62, and the isolation structure 20 is arranged on the side of the second flat sub-layer 62 away from the first flat sub-layer 61, so that when the organic functional layer 30 extends from the pixel area 1101 to the isolation structure 20, it can be isolated at the first undercut opening 101 and / or the second undercut opening 201, so as to isolate the leakage path, reduce the leakage current of the display panel, and improve the stability of the display panel; in addition, the water vapor intrusion channel can also be isolated.

[0135] In some embodiments, the anode layer 82 may include the anode 821 and the isolation structure 20 , that is, the isolation structure 20 may be formed in the same process as the anode 821 , thereby saving process steps and reducing process costs.

[0136] In some embodiments, since the isolation structure 20 is arranged on the second flat sub-layer 62, the pixel definition layer 70 corresponding to the isolation structure 20 will be removed; then a second opening 702 corresponding to the isolation structure 20 is also opened in the pixel definition layer 70, so that the organic functional layer 30 can extend into the second opening 702 and be isolated by the isolation structure 20; therefore, when the isolation structure 20 is arranged around the opening area 130, the second opening 702 is also arranged around the opening area 130, and can also isolate the water vapor intrusion channel in the pixel definition layer 70, further improve the water vapor blocking effect of the display panel, and improve the stability and service life of the display panel.

[0137] In one embodiment of the present application, please combine Figure 1 , Fig.11 as well as Fig.14 The display area 110 includes a plurality of pixel areas 1101 , and the plurality of pixel areas 1101 are arranged corresponding to the plurality of first openings 701 in the pixel definition layer 70 ; in the present embodiment, the isolation structure 20 is located between adjacent pixel areas 1101 .

[0138] The isolation structure 20 can be arranged around each of the pixel areas 1101, that is, the isolation structure 20 is arranged around the first opening 701, thereby being able to isolate the portion of the organic functional layer 30 that enters other pixel areas 1101 from the pixel area 1101, thereby being able to isolate the leakage path, reduce the leakage current of the display panel, and improve the stability of the display panel; in addition, it can also isolate the water vapor intrusion channel from the pixel area 1101 in the organic functional layer 30 to the other pixel areas 1101, thereby reducing the probability of device damage to the display panel due to water vapor intrusion and improving the stability of the display panel.

[0139] Specifically, in this embodiment, the organic layer 10 is reused as the planar layer 60, and further, the organic layer 10 is reused as the first planar sublayer 61, and the isolation structure 20 is arranged on the side of the first planar sublayer 61 away from the second interlayer dielectric layer 53, so that when the organic functional layer 30 extends from the pixel area 1101 to the isolation structure 20, it can be isolated at the first undercut opening 101 and / or the second undercut opening 201, so as to isolate the leakage path, reduce the leakage current of the display panel, and improve the stability of the display panel; in addition, the water vapor intrusion channel can also be isolated.

[0140] In some embodiments, the conductive layer 81 may include the first transfer line 811 and the isolation structure 20 , that is, the isolation structure 20 may be formed in the same process as the first transfer line 811 , thereby saving process steps and reducing process costs.

[0141] In some embodiments, since the isolation structure 20 is arranged on the first flat sub-layer 61, the pixel definition layer 70 and the second flat sub-layer 62 corresponding to the isolation structure 20 will be removed; then a second opening 702 corresponding to the isolation structure 20 is also opened in the pixel definition layer 70, and the second flat sub-layer 62 forms a third opening 703 corresponding to the second opening 702, and the second opening 702 and the third opening 703 are connected; so that the organic functional layer 30 can extend to the second opening 702 and the third opening 703 and be isolated by the isolation structure 20; therefore, when the isolation structure 20 is arranged around the pixel area 1101, the second opening 702 and the third opening 703 are also arranged around the pixel area 1101, and can also isolate the water vapor intrusion channel in the pixel definition layer 70 and the second flat sub-layer 62, further improving the water vapor blocking effect of the display panel, and improving the stability and service life of the display panel.

[0142] In another embodiment of the present application, please combine Figure 1, Fig.15 as well as Fig.16 In the present embodiment, the display panel further includes a cathode layer 83 disposed on a side of the organic functional layer 30 away from the pixel definition layer 70 , and the cathode layer 83 is isolated at the isolation structure 20 .

[0143] In this embodiment, the isolation structure 20 is not arranged in a closed manner around the pixel area 1101. The isolation structure 20 forms a gap 203 on the path around the pixel area 1101. The isolation structure 20 is not set at the gap 203, and the organic functional layer 30 and the cathode layer 83 are continuously arranged at the gap 203 to realize the entire surface signal transmission of the cathode layer 83.

[0144] It should be noted that in Figures 2 to 15 In the illustrated embodiment, the cathode layer 83 may be continuously disposed, that is, only the organic functional layer 30 is interrupted at the isolation structure 20 .

[0145] Furthermore, the isolation structure 20 can be configured as Figures 2 to 15 At least one of the structures shown in the embodiments shown.

[0146] As mentioned above, in the embodiment of the present application, the isolation structure 20 is arranged on the organic layer 10, and the isolation structure 20 can form the first bottom cut opening 101 between the organic layer 10, and the second bottom cut opening 201 can be formed in the isolation structure 20, so that the two bottom cut openings can cooperate to more effectively isolate the organic functional layer 30, and can avoid problems such as water vapor intrusion or leakage, thereby enhancing the stability of the display panel and improving the display effect of the display panel.

[0147] In addition, the present application also provides a preparation process of the isolation structure 20 described in the above embodiment. Figure 1 , Fig.17 , Fig.18 as well as Fig.19 The preparation process of the isolation structure 20 includes the following steps:

[0148] An organic material layer 1100 is formed.

[0149] An isolation material layer 200 is formed on the organic material layer 1100; wherein the isolation material layer 200 includes a first material layer 210, a second material layer 220 and a third material layer 230 which are stacked, and the second material layer 220 is located between the first material layer 210 and the third material layer 230, and the first material layer 210 is located between the second material layer 220 and the organic material layer 1100, as shown in FIG. Fig.17 shown.

[0150] In some embodiments, the stack structure of the first material layer 210 / the second material layer 220 / the third material layer 230 can be Ti / Al / Ti, Mo / Al / Mo or ITO / Ag / ITO; that is, the etching rate of the second material layer 220 is greater than the etching rate of the first material layer 210, and the etching rate of the second material layer 220 is greater than the etching rate of the third material layer 230.

[0151] Then, the organic material layer 1100 is etched to reduce the thickness of the organic material layer 1100, and the thinned portion is the main body 11, while the portion blocked by the isolation material layer 200 is not etched, thereby forming the raised portion 12, so that the raised portion 12 is located between the isolation material layer 200 and the main body 11; the organic material layer 1100 is partially etched toward the bottom of the isolation material layer 200 at the edge of the isolation material layer 200 to form the first undercut opening 101, as shown in FIG. Fig.18 shown.

[0152] Then, the isolation material layer 200 is etched. Since the etching rate of the second material layer 220 is greater than the etching rate of the first material layer 210 and the etching rate of the third material layer 230, the side of the isolation material layer 200 is side-etched to form the second undercut opening 201; that is, the edge of the second material layer 220 is retracted relative to the edge of the first material layer 210 and the edge of the third material layer 230, and the following can be obtained: Fig.19 An isolation structure 20 is shown.

[0153] Next, when the organic functional layer 30 is formed on the organic layer 10 and the isolation structure 20, the organic functional layer 30 will be isolated at the first undercut opening 101 and / or the second undercut opening 201 to avoid problems such as water vapor intrusion or leakage, thereby enhancing the stability of the display panel and improving the display effect of the display panel.

[0154] In addition, an embodiment of the present application further provides a display device, which includes the display panel described in the above embodiment.

[0155] It can be understood that, since the display device has the same display panel as that in the above embodiment, the display device has the same beneficial effects as the display panel, which will not be described in detail herein.

[0156] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood 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 features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0157] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0158] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0159] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display panel, characterized in that: include: Organic layer; An isolation structure, disposed on the organic layer; An organic functional layer, disposed on the isolation structure and the organic layer; The organic layer forms a first undercut opening at the edge of the isolation structure, the side surface of the isolation structure forms a second undercut opening, and the organic functional layer is separated at the first undercut opening and / or the second undercut opening.

2. The display panel according to claim 1, characterized in that: The organic layer includes a main body and a protruding portion connected to a side of the main body close to the isolation structure, and the isolation structure is arranged on a side of the protruding portion away from the main body; The raised portion includes a first surface close to one side of the isolation structure and a first side surface connected to the first surface, and at least a portion of the first side surface is retracted inward toward the center of the raised portion relative to an edge of the isolation structure close to the raised portion to form the first undercut opening.

3. The display panel according to claim 2, characterized in that: The isolation structure includes a second surface away from one side of the protrusion, a third surface close to one side of the protrusion, and a second side surface connected between the second surface and the third surface, and a partial area of ​​the second side surface is retracted inward toward the direction close to the center of the isolation structure to form the second undercut opening.

4. The display panel according to claim 3, characterized in that: The isolation structure comprises a first sublayer, a second sublayer and a third sublayer which are stacked, and the second sublayer is located between the first sublayer and the third sublayer; At the second side surface, the edge of the second sub-layer is retracted inwardly toward the center of the second sub-layer relative to the edge of the first sub-layer and the edge of the third sub-layer to form the second undercut opening.

5. The display panel according to claim 2, characterized in that: The organic functional layer includes a first sub-portion located at a side of the isolation structure away from the protrusion and a second sub-portion located at a side of the main body close to the protrusion, and the first sub-portion and the second sub-portion are arranged at intervals.

6. The display panel according to claim 2, characterized in that: The organic functional layer includes a first sub-portion located on a side of the isolation structure away from the protrusion, a second sub-portion located on a side of the main body close to the protrusion, and a third sub-portion located in the second bottom cut opening, and the first sub-portion, the second sub-portion and the third sub-portion are spaced apart from each other.

7. The display panel according to claim 1, characterized in that: The first undercut opening at least partially overlaps with the second undercut opening along a thickness direction of the display panel.

8. The display panel according to claim 1, characterized in that: A maximum depth of the first undercut opening in a direction from an edge of the protruding portion to a center of the protruding portion is greater than or equal to a maximum depth of the second undercut opening in a direction from an edge of the isolation structure to a center of the isolation structure.

9. The display panel according to claim 1, characterized in that: The display panel comprises a plurality of isolation structures arranged at intervals, a groove located between two adjacent isolation structures, and a filling portion arranged between two adjacent isolation structures, wherein the filling portion fills the groove and protrudes from a surface of the isolation structure away from the organic layer; The first undercut opening and the second undercut opening are at least located at a side of the isolation structure away from the filling portion.

10. The display panel according to any one of claims 1 to 9, characterized in that: The organic functional layer includes an organic light-emitting layer, the display panel also includes a display area and a non-display area adjacent to the display area, and the isolation structure is arranged in the display area and / or the non-display area.

11. The display panel according to claim 10, characterized in that: The isolation structure is arranged around the display area.

12. The display panel according to claim 10, characterized in that: The display panel further includes an opening area adjacent to the display area. An opening located in the opening area is opened in the display panel. The opening passes through a portion of the film layer in the display panel. The isolation structure is arranged around the opening area.

13. The display panel according to claim 10, characterized in that: The display area includes a plurality of pixel areas, and the isolation structure is arranged between adjacent pixel areas.

14. The display panel according to claim 10, characterized in that: The display panel further includes: substrate; A thin film transistor layer is disposed on the substrate; A planar layer, disposed on a side of the thin film transistor layer away from the substrate; A pixel definition layer is arranged on a side of the planar layer away from the thin film transistor layer; Wherein, the organic layer is reused as the planar layer or the pixel definition layer.

15. The display panel according to claim 14, characterized in that: When the organic layer is the flat layer, the display panel further comprises an anode layer disposed on the flat layer, the anode layer comprises anodes disposed at intervals and the isolation structure, and a first opening corresponding to the anode and a second opening corresponding to the isolation structure are opened in the pixel definition layer; Alternatively, when the organic layer is the planar layer, the planar layer includes a plurality of planar sub-layers, the display panel further includes a conductive layer disposed between adjacent planar sub-layers, and the conductive layer includes a first transfer line and the isolation structure.

16. The display panel according to claim 14, characterized in that: When the organic layer is the pixel definition layer, the isolation structure is disposed on a side of the pixel definition layer away from the planar layer.

17. The display panel according to claim 10, characterized in that: The organic functional layer further includes a light-emitting auxiliary layer stacked with the organic light-emitting layer, and the light-emitting auxiliary layer includes at least one of an electron injection layer, an electron transport layer, a hole injection layer, and a hole transport layer.

18. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 17.

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