Display panel, display mother board and display device

Abstract

The invention discloses a display panel, a display mother board and a display device, the display panel comprises a substrate, a first isolation structure, a second isolation structure and a plurality of light emitting units, the first isolation structure is arranged on the substrate and is provided with a plurality of first isolation openings; the second isolation structure is arranged on the substrate, the second isolation structure at least partially surrounds the first isolation structure, the first isolation structure and the second isolation structure are arranged in a spaced mode, and at least part of the light-emitting unit is located in the first isolation opening. The density of the light-emitting units in the first isolation structure is relatively high, and static electricity generated in the subsequent technological process is easy to damage the first isolation structure or the light-emitting units, so that the first isolation structure is surrounded by the second isolation structure, and the display panel can be manufactured under the condition that the static electricity is generated in the manufacturing process of the display panel. The second isolation structure can conduct drainage on electrostatic current, and electrostatic protection on the first isolation structure and the light-emitting unit is achieved.

Description

Technical Field

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

[0002] Currently, organic light emitting diodes (OLED) and flat panel display devices based on light emitting diodes (LED) and other technologies are widely used and become the mainstream in display devices due to their advantages such as high image quality, power saving, thin body and wide application range. Summary of the invention

[0003] The purpose of the present application is to provide a display panel, a display motherboard and a display device to solve the problems existing in the prior art.

[0004] A first aspect of an embodiment of the present application provides a display panel, comprising: a substrate; a first isolation structure, the first isolation structure being arranged on the substrate and having a plurality of first isolation openings; a second isolation structure, the second isolation structure being arranged on the substrate, the second isolation structure at least partially surrounding the first isolation structure, the first isolation structure and the second isolation structure being spaced apart from each other; and a plurality of light-emitting units, at least some of the light-emitting units being located in the first isolation openings.

[0005] In one embodiment, the first isolation structure and the second isolation structure are provided in the same layer and with the same material.

[0006] In one embodiment, the first isolation structure and the second isolation structure are insulated from each other or electrically connected.

[0007] In one embodiment, the display panel further includes a first electrode and a second electrode. In a direction away from the substrate, the first electrode, the light-emitting unit, and the second electrode are stacked in sequence, and the second electrode is electrically connected to the first isolation structure.

[0008] In one embodiment, the display panel further includes a pixel definition layer, the pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, the pixel opening and the first isolation opening are arranged to be interconnected; the pixel opening at least partially exposes the first electrode.

[0009] In one embodiment, the display panel further includes a plurality of dummy light-emitting units, the second isolation structure encloses a plurality of second isolation openings, and at least some of the dummy light-emitting units are located in the second isolation openings; preferably, the dummy light-emitting units are arranged in the same layer and the same material as at least some of the light-emitting units; preferably, the orthographic projection of the second isolation structure on the substrate is a closed ring, and the second isolation structure surrounds at least one of the first isolation structures.

[0010] In one embodiment, there is a gap between the first isolation structure and the second isolation structure, and part of the dummy light-emitting unit is located in the gap; preferably, the display panel also includes a dummy electrode, and the dummy electrode is located on the side of the dummy light-emitting unit away from the substrate; preferably, the gap is a closed ring in its orthographic projection on the substrate.

[0011] In one embodiment, the substrate includes a conductive structure, and the conductive structure is electrically connected to the second isolation structure.

[0012] In one embodiment, the display panel also includes a connection structure, which is located on a side of the pixel defining portion close to the substrate, and is electrically connected to the conductive structure; the pixel definition layer is also provided with a plurality of connection openings, at least part of the second isolation structure is filled in the connection opening, and the second isolation structure is in contact with the connection structure; preferably, the connection structure is provided in the same layer and material as the first electrode.

[0013] In one embodiment, the conductive structure includes a first metal block, and the first metal block is electrically connected to the second isolation structure through the connecting structure.

[0014] In one embodiment, the conductive structure further includes a second metal block, and the second metal block is electrically connected to the second isolation structure via another connecting structure; preferably, the first metal block and the second metal block are provided in the same layer and with the same material.

[0015] In one embodiment, the conductive structure includes a plurality of conductive sub-structures, wherein the conductive sub-structures are arranged in one-to-one correspondence with the second isolation openings, the conductive sub-structures are electrically connected to the second isolation structure, and are electrically connected to adjacent conductive sub-structures; preferably, the conductive sub-structures include a first metal block and a second metal block, the first metal block is electrically connected to the second isolation structure through one of the connecting structures, the second metal block is electrically connected to the second isolation structure through another connecting structure, the first metal block is electrically connected to an adjacent conductive sub-structure, and the second metal block is electrically connected to another adjacent conductive sub-structure.

[0016] In one embodiment, in the thickness direction of the substrate, the dummy light emitting unit is located on a side of the pixel defining portion away from the substrate, and the dummy light emitting unit is not located in the pixel opening.

[0017] In one embodiment, the first isolation structure includes a first sub-isolation layer and a second sub-isolation layer stacked in sequence on the substrate along a direction away from the substrate, and the orthographic projection of the first sub-isolation layer on the substrate is located within the orthographic projection of the second sub-isolation layer on the substrate; the second isolation structure includes a third sub-isolation layer and a fourth sub-isolation layer stacked in sequence on the substrate along a direction away from the substrate, and the orthographic projection of the third sub-isolation layer on the substrate is located within the orthographic projection of the fourth sub-isolation layer on the substrate; the first sub-isolation layer and the third sub-isolation layer are in the same layer and are made of the same material; the second sub-isolation layer and the fourth sub-isolation layer are in the same layer and are made of the same material.

[0018] In one embodiment, the first isolation structure further includes a fifth sub-isolation layer, which is disposed between the substrate and the first sub-isolation layer, and the second isolation structure further includes a sixth sub-isolation layer, which is disposed between the substrate and the third sub-isolation layer.

[0019] In one embodiment, a packaging layer is further included, which is located on a side of the light-emitting unit and the dummy light-emitting unit away from the substrate, and the packaging layer includes a plurality of packaging parts, and the plurality of packaging parts respectively cover the light-emitting unit and the dummy light-emitting unit.

[0020] In one embodiment, the display panel includes a first area and a second area at least partially surrounding the first area, the first isolation structure is located in the first area, the second isolation structure is located in the second area, and the orthographic projections of two adjacent packaging parts located in the second area on the substrate are arranged to be spaced apart from each other; preferably, the orthographic projections of two adjacent packaging parts located in the first area on the substrate overlap with each other.

[0021] A second aspect of an embodiment of the present application provides a display motherboard, comprising: a motherboard substrate; a plurality of first isolation structures, the first isolation structures being arranged on the motherboard substrate and having a plurality of first isolation openings; a plurality of second isolation structures, the second isolation structures being arranged on the motherboard substrate, the second isolation structures at least partially surrounding the first isolation structures; the first isolation structures and the second isolation structures being spaced apart from each other; a plurality of light-emitting units, one of the light-emitting units being arranged in the first isolation opening; and a third isolation structure, the third isolation structure surrounding each of the second isolation structures and being spaced apart from each of the second isolation structures.

[0022] A third aspect of the embodiments of the present application provides a display device, comprising the display panel as described above.

[0023] The beneficial effect of the embodiment of the present application compared with the prior art is that by surrounding the first isolation structure with the second isolation structure, when static electricity is generated during the manufacturing process of the display panel, the second isolation structure can drain the static electricity current to achieve static electricity protection for the first isolation structure and the light-emitting unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic top view of a display panel provided in an embodiment of the present application;

[0025] Figure 2 A schematic cross-sectional view of a first isolation structure and a second isolation structure of a display panel provided in an embodiment of the present application;

[0026] Figure 3 A schematic top view showing only a portion of the second isolation structure and a portion of the conductive substructure provided for an embodiment of the present application;

[0027] Figure 4 A schematic top view of a display motherboard provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of a display device provided in one embodiment of the present application.

[0029] Explanation of the accompanying drawings: 10, display panel; 20, display motherboard; 30, display device; 100, substrate; 110, pixel defining portion; 120, conductive structure; 121, first metal block; 122, second metal block; 123, conductive substructure; 130, connection structure; 140, first planarization layer; 150, second planarization layer; 160, substrate; 200, first isolation structure; 210, first sub-isolation layer; 220, second sub-isolation layer; 230, fifth sub-isolation layer; 300, second isolation structure; 310, third sub-isolation layer; 320, fourth sub-isolation layer; 330, sixth sub-isolation layer; 340, second isolation opening; 400, light-emitting unit; 410, first electrode; 420, second electrode; 500, dummy light-emitting unit; 510, dummy electrode; 600, encapsulation layer; 700, third isolation structure; 800, motherboard substrate. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, 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 the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the field of display panel technology, static electricity often occurs during the preparation of display panels. Static electricity can generate large static electricity currents. Excessive static electricity currents can damage some light-emitting structures or circuits of the display panel, causing some pixels of the display panel to remain permanently bright or permanently dark.

[0035] Especially for display panels with an isolation structure, once static electricity is generated in the process flow after the isolation structure is formed, since the isolation structure has a certain height compared to the substrate, the static electricity current is more likely to cause static electricity damage to the isolation structure and surrounding structures and circuits.

[0036] Figure 1 A schematic diagram of a display panel provided in an embodiment of the present application is shown. For the sake of convenience, only the part related to the present embodiment is shown, which is described in detail as follows:

[0037] like Figure 1 , Figure 2 As shown, the display panel 10 includes: a substrate 100 , a first isolation structure 200 , a second isolation structure 300 and a plurality of light emitting units 400 .

[0038] The first isolation structure 200 is disposed on the substrate 100 and has a plurality of first isolation openings, and at least part of the light emitting unit 400 is located in the first isolation openings. The second isolation structure 300 is disposed on the substrate 100, and the second isolation structure 300 at least partially surrounds the first isolation structure 200, and the first isolation structure 200 and the second isolation structure 300 are disposed at intervals from each other.

[0039] Among them, it can be understood that the area corresponding to the first isolation structure 200 can be the display area of ​​the display panel 10. A plurality of first isolation structures 200 can be included in a second isolation structure 300. Preferably, only one first isolation structure 200 can be included in the second isolation structure 300. The number of first isolation structures 200 can be set according to actual needs. The first isolation structure 200 and the second isolation structure 300 are arranged on the substrate 100, which can specifically refer to the first isolation structure 200 and the second isolation structure 300 being directly arranged on the substrate 100, and the first isolation structure 200 and the second isolation structure 300 are in direct contact with the substrate 100. The first isolation structure 200 and the second isolation structure 300 are arranged on the substrate 100, which can also refer to the first isolation structure 200 and the second isolation structure 300 being indirectly arranged on the substrate 100. Other structures and devices can be arranged between the first isolation structure 200, the second isolation structure 300 and the substrate 100. This embodiment does not limit the connection relationship between the first isolation structure 200, the second isolation structure 300 and the substrate 100.

[0040] Since the pixel density in the first isolation structure 200 is relatively high and the first isolation structure 200 has a certain height compared to the substrate 100, the static electricity generated in the subsequent manufacturing process of the display panel 10 (for example, the process of evaporating the light-emitting layer / cathode / encapsulation layer, etc.) can easily hit the first isolation structure 200, thereby damaging the first isolation structure 200 and the circuits and structures related to the light-emitting unit 400. Therefore, the first isolation structure 200 is surrounded by the second isolation structure 300. When static electricity is generated in the subsequent process, the second isolation structure 300 can cut off and divert the static electricity current, thereby realizing static electricity protection for the first isolation structure 200 and the light-emitting unit 400.

[0041] In some embodiments, the height of the first isolation structure 200 and the second isolation structure 300 is less than 2 micrometers. For example, the height of the first isolation structure 200 and the second isolation structure 300 may be 1 micrometer.

[0042] The protruding first isolation structure 200 disposed on the substrate 100 is more likely to attract static electricity, and therefore needs to be protected by a similarly protruding second isolation structure 300 .

[0043] In some embodiments, each first isolation opening is rectangular.

[0044] Specifically, the first isolation openings can be arranged in a certain order to form a corresponding square matrix according to actual needs. The shape of the corresponding light emitting unit 400 can be controlled by controlling the shape of the first isolation openings.

[0045] In one embodiment, the first isolation structure 200 and the second isolation structure 300 are provided in the same layer and the same material. The specific structures of the first isolation structure 200 and the second isolation structure 300 may be the same.

[0046] In order to reduce manufacturing costs and design difficulties, the first isolation structure 200 and the second isolation structure 300 can be constructed at the same time when the first isolation structure 200 and the second isolation structure 300 are set in the same layer and the same material without the need for additional process steps. Electrostatic protection of the first isolation structure 200 and the light-emitting unit 400 can be achieved without excessively increasing manufacturing costs.

[0047] In one embodiment, the first isolation structure 200 and the second isolation structure 300 are insulated from each other or electrically connected.

[0048] It can be understood that when the first isolation structure 200 and the second isolation structure 300 are spaced apart from each other, even if the first isolation structure 200 and the second isolation structure 300 are electrically connected, the impact of the electrostatic current on the first isolation structure 200 will be greatly reduced after being shunted through the first isolation structure 200.

[0049] In one embodiment, if Figure 2 As shown, the display panel 10 further includes a first electrode 410 and a second electrode 420 . In a direction away from the substrate 100 , the first electrode 410 , the light emitting unit 400 , and the second electrode 420 are sequentially stacked, and the second electrode 420 is electrically connected to the first isolation structure 200 .

[0050] The first electrode 410 and the second electrode 420 may be connected to a related driving circuit to provide a driving current to the light emitting unit 400 to drive the light emitting unit 400 to emit light.

[0051] Specifically, the first electrode 410 may be directly connected to the circuit in the substrate 100 , and the second electrode 420 may be overlapped on the first isolation structure and obtain a corresponding voltage from the first isolation structure 200 .

[0052] For example, the first isolation structure 200 may be used to provide a ground voltage (ie, a negative voltage). The first electrode 410 may obtain a driving current from a circuit in the substrate 100 .

[0053] In one embodiment, the display panel 10 includes a pixel definition layer (Pixel Definition Layer; PDL), the pixel definition layer includes a pixel defining portion 110 and a pixel opening formed by the pixel defining portion 110, the pixel opening and the first isolation opening are interconnected; the pixel opening at least partially exposes the first electrode 410.

[0054] Among them, the first electrode 410 can be set on the side of the pixel definition layer away from the first isolation structure 200, the pixel opening can correspond to the first isolation opening one by one, and the light-emitting unit 400 set in the first isolation opening can be electrically connected to the corresponding first electrode 410 through the pixel opening.

[0055] In one embodiment, the display panel 10 further includes a plurality of dummy light emitting units 500 , and the second isolation structure 300 encloses a plurality of second isolation openings, and at least some of the dummy light emitting units 500 are located in the second isolation openings.

[0056] It should be noted that the light-emitting material can contact the first electrode 410 only at the position where the pixel opening is located to form the light-emitting unit 400 for emitting light. Therefore, even if the light-emitting material is filled in the second isolation opening, only a dummy light-emitting unit 500 can be formed, and the dummy light-emitting unit 500 cannot emit light normally.

[0057] Preferably, the dummy light emitting unit 500 and at least part of the light emitting unit 400 are provided in the same layer and with the same material.

[0058] It is understandable that in the manufacturing process, the first isolation structure 200 and the second isolation structure 300 of this embodiment can be constructed as a whole, and the dummy light-emitting unit 500 can also be constructed together with at least part of the light-emitting unit 400 to minimize the cost and complexity of changing the process steps.

[0059] Preferably, the orthographic projection of the second isolation structure 300 on the substrate 100 is in the shape of a closed ring, and the second isolation structure 300 surrounds at least one first isolation structure 200 .

[0060] The orthographic projection of the second isolation structure 300 on the substrate 100 is a closed ring, so that the second isolation structure 300 can be fully protected.

[0061] In one embodiment, a gap is provided between the first isolation structure 200 and the second isolation structure 300 , and part of the dummy light emitting unit 500 is located in the gap.

[0062] Preferably, the display panel 10 further includes a dummy electrode 510 , and the dummy electrode 510 is located on a side of the dummy light emitting unit 500 facing away from the substrate 100 .

[0063] It can be understood that the dummy light-emitting unit 500 and the light-emitting unit 400 can be constructed in the same preparation step, and the dummy electrode 510 and at least a portion of the second electrode 420 can be constructed in the same preparation step. There is no need to improve the existing process flow in order to avoid forming the dummy light-emitting unit 500 and the dummy electrode 510, which can ultimately reduce the cost of process flow modification.

[0064] Preferably, the orthographic projection of the gap between the first isolation structure 200 and the second isolation structure 300 on the substrate 100 is in the shape of a closed ring.

[0065] When the orthographic projection of the second isolation structure 300 on the substrate 100 is in the shape of a closed ring, the orthographic projection of the corresponding gap on the substrate 100 is also in the shape of a closed ring.

[0066] In one embodiment, the substrate 100 includes a conductive structure 120 , and the conductive structure 120 is electrically connected to the second isolation structure 300 .

[0067] In the second isolation structure 300, the large current generated by the electrostatic phenomenon can be diverted through the conductive structure 120 to avoid excessive local electrostatic current in the second isolation structure 300, while further reducing the current transmitted to the first isolation structure 200, thereby reducing the risk of burning out some circuits and structures in the display panel 10.

[0068] In one embodiment, the display panel 10 further includes a connection structure 130 , which is located on a side of the pixel defining portion 110 close to the substrate 100 , and is used to be electrically connected to the conductive structure 120 ;

[0069] The pixel definition layer is further provided with a plurality of connection openings, at least a portion of the second isolation structure 300 is filled in the connection openings, and the second isolation structure 300 is in contact with the connection structure 130 .

[0070] Preferably, the connection structure 130 and the first electrode 410 are provided in the same layer and with the same material.

[0071] By opening a plurality of connection openings on the pixel definition layer, the current transmission rate can be accelerated, so that the charges in the second isolation structure 300 can be quickly transmitted to the conductive structure 120 through the connection structure 130 .

[0072] In one embodiment, the conductive structure 120 includes a first metal block 121 . The first metal block 121 is disposed in the substrate 100 . The first metal block 121 is electrically connected to the second isolation structure 300 through the connection structure 130 .

[0073] The material of the first metal block 121 includes at least one of copper, silver and other conductive materials to shunt the electrical energy in the second isolation structure 300. The first metal block 121 can be constructed by deposition during the process of preparing the substrate 100.

[0074] In one embodiment, the conductive structure 120 further includes a second metal block 122 . The second metal block 122 is disposed in the substrate 100 . The second metal block 122 is electrically connected to the second isolation structure 300 via another connection structure 130 .

[0075] Preferably, the first metal block 121 and the second metal block 122 are provided in the same layer and with the same material.

[0076] The two metal blocks can further speed up the shunting of the electrostatic current in the second isolation structure 300 .

[0077] Specifically, the first metal block 121 , the second metal block 122 and the connection structure 130 may be connected through vias.

[0078] In one embodiment, if Figure 3 As shown, the conductive structure 120 includes a plurality of conductive substructures 123 . The conductive substructures 123 are arranged in one-to-one correspondence with the second isolation openings 340 . The conductive substructures 123 are electrically connected to the second isolation structure 300 and to adjacent conductive substructures 123 .

[0079] Preferably, the conductive sub-structure 123 includes a first metal block 121 and a second metal block 122, and the first metal block 121 and the second metal block 122 are arranged in the substrate 100, the first metal block 121 is electrically connected to the second isolation structure 300 through one of the connecting structures 130, and the second metal block 122 is electrically connected to the second isolation structure 300 through another connecting structure 130, the first metal block 121 is electrically connected to an adjacent conductive sub-structure 123, and the second metal block 122 is electrically connected to another adjacent conductive sub-structure 123.

[0080] By setting up multiple conductive sub-structures 123 to be connected to each other, after one of the conductive sub-structures 123 obtains the electrostatic current from the corresponding second isolation structure 300, the electrostatic current can be drained in sequence along the first metal block 121, the connecting structure 130, the second isolation structure 300, the connecting structure 130, and the second metal block 122 of another conductive sub-structure 123, and finally transmitted to the next conductive sub-structure 123, which can fully avoid the accumulation of charges in a certain place, causing the temperature of part of the structure to be too high and burnt.

[0081] Specifically, the conductive substructure 123 can be electrically connected to the connection structure 130 through corresponding vias. The conductive substructures 123 can be electrically connected to adjacent conductive substructures 123 through corresponding leads to form a closed-loop circuit in the substrate 100 to assist the second isolation structure 300 in shunting the electrostatic current.

[0082] In one embodiment, the substrate 100 further includes a plurality of planarization layers (PLN).

[0083] For example, Figure 2 As shown, the substrate 100 further includes a substrate 160, a first planarization layer 140, and a second planarization layer 150. The substrate 160, the first planarization layer 140, the second planarization layer 150, and the pixel definition layer are stacked in sequence. The first metal block 121 and the second metal block 122 are arranged on one layer or on the side of the two planarization layers facing the substrate 160. For example, Figure 2 The first metal block 121 and the second metal block 122 are both disposed on the side of the second planarization layer 150 facing the substrate 160 .

[0084] Among them, the material of the planarization layer can be one or more of aliphatic polyester, aliphatic polyurethane, aromatic polyurethane, epoxy resin or acrylic resin, preferably epoxy resin or acrylic resin. The material of the pixel definition layer includes one or more of silicon nitride, silicon oxide or silicon oxynitride. The material of substrate 160 may include a rigid material, for example, the material of substrate 160 may include glass. Alternatively, substrate 160 may be a flexible substrate, and the material of substrate 160 may include a flexible material, for example, the material of substrate 160 may include polyimide (Polyimide; Pi). The materials of substrate 160, planarization layer and pixel definition layer are not limited thereto.

[0085] In one embodiment, if Figure 2 As shown, in the thickness direction of the substrate 100 , the dummy light emitting unit 500 is located on a side of the pixel defining portion 110 away from the substrate 100 , and the dummy light emitting unit 500 is not located in the pixel opening.

[0086] It can be understood that although the dummy light-emitting unit 500 is constructed using the same steps as the light-emitting unit 400, the dummy light-emitting unit 500 is isolated from the circuit inside the substrate 100 by the pixel defining portion 110. Therefore, the dummy light-emitting unit 500 does not participate in the light emission. When an electrostatic effect occurs, causing the electrostatic current to enter the second isolation structure 300, even if the second isolation structure 300 and the dummy light-emitting unit 500 are damaged due to excessive current, it will not affect the normal light emission of the display panel 10.

[0087] In one embodiment, if Figure 2As shown, the first isolation structure 200 includes a first sub-isolation layer 210 and a second sub-isolation layer 220 stacked in sequence on the substrate 100 in a direction away from the substrate 100, and the orthographic projection of the first sub-isolation layer 210 on the substrate 100 is located within the orthographic projection of the second sub-isolation layer 220 on the substrate 100.

[0088] The second isolation structure 300 includes a third sub-isolation layer 310 and a fourth sub-isolation layer 320 which are sequentially stacked on the substrate 100 in a direction away from the substrate 100 , and the orthographic projection of the third sub-isolation layer 310 on the substrate 100 is located within the orthographic projection of the fourth sub-isolation layer 320 on the substrate 100 .

[0089] By controlling the size relationship between the first sub-isolating layer 210 and the second sub-isolating layer 220 , the independence between the first isolation openings can be improved, thereby preventing the light-emitting units 400 from sticking to each other when the light-emitting materials are filled to construct the light-emitting units 400 .

[0090] The first sub-isolating layer 210 and the third sub-isolating layer 310 are in the same layer and made of the same material; the second sub-isolating layer 220 and the fourth sub-isolating layer 320 are in the same layer and made of the same material.

[0091] The second isolation structure 300 may be constructed by using the same process as the first isolation structure 200 .

[0092] In one embodiment, the first isolation structure 200 further includes a fifth sub-isolation layer 230 , and the fifth sub-isolation layer 230 is disposed between the substrate 100 and the first sub-isolation layer 210 .

[0093] The second isolation structure 300 further includes a sixth sub-isolation layer 330 , which is disposed between the substrate 100 and the third sub-isolation layer 310 .

[0094] The material of the fifth sub-isolation layer 230 and the sixth sub-isolation layer 330 includes molybdenum, the material of the first sub-isolation layer 210 and the third sub-isolation layer 310 includes aluminum, and the material of the second sub-isolation layer 220 and the fourth sub-isolation layer 320 includes titanium.

[0095] The second electrode 420 layer may overlap the first sub-isolating layer 210 and / or the fifth sub-isolating layer 230 .

[0096] In one embodiment, if Figure 2 As shown, the display panel 10 further includes an encapsulation layer 600 , which is located on the side of the light emitting unit 400 and the dummy light emitting unit 500 away from the substrate 100 . The first encapsulation layer 600 includes a plurality of encapsulation parts, which respectively cover the light emitting unit 400 and the dummy light emitting unit 500 .

[0097] The encapsulation layer 600 is used to protect the light emitting unit 400 and the dummy light emitting unit 500 to prevent the light emitting unit 400 from directly contacting the external environment.

[0098] In one embodiment, the display panel 10 includes a first area and a second area at least partially surrounding the first area, the first isolation structure 200 is located in the first area, the second isolation structure 300 is located in the second area, and the orthographic projections of two adjacent packaging parts located in the second area on the substrate 100 are arranged to be spaced apart from each other. Figure 2 As shown, the orthographic projections of two adjacent packaging parts located in the first area on the substrate 100 overlap with each other.

[0099] Among them, the first area is the area where the first isolation structure 200 is set on the display panel 10, and the second area is the area where the second isolation structure 300 is set on the display panel 10. The first area can be the display area of ​​the display panel 10, and the second area can be the non-display area of ​​the display panel 10.

[0100] It should be noted that the top surface of the second isolation structure 300 away from the substrate 100 is usually provided with a corrosion-resistant metal layer (that is, the material of the fourth sub-isolation layer 320 is usually a corrosion-resistant metal). Therefore, by covering the side wall of the second isolation structure 300 with the encapsulation layer 600, the metal under the corrosion-resistant metal layer can be protected, and the corrosion-resistant metal surface of the second isolation structure 300 can be exposed. Since the encapsulation parts on the first isolation structure 200 overlap with each other, the surface of the pixel definition layer, the surface of the first isolation structure 200, and the surface of the light-emitting unit 400 are all covered by the encapsulation layer 600. Therefore, when static electricity occurs, the second isolation structure 300 will attract static electricity current and intercept the static electricity current to avoid the static electricity current from being transmitted to the first isolation structure 200.

[0101] Figure 4 A schematic top view of a display motherboard provided by an embodiment of the present application is shown. For ease of description, only the parts related to the present embodiment are shown, which are described in detail as follows:

[0102] A display motherboard 20 includes: a motherboard substrate 800 , a plurality of first isolation structures 200 , a plurality of second isolation structures 300 and a plurality of light-emitting units 400 . Different from the above embodiment, the display panel 10 further includes a third isolation structure 700 .

[0103] The first isolation structure 200 is arranged on the substrate 100 and is provided with a plurality of first isolation openings; the second isolation structure 300 is arranged on the motherboard substrate 800, and the second isolation structure 300 at least partially surrounds the first isolation structure 200; the first isolation structure 200 and the second isolation structure 300 are arranged at intervals from each other; a light-emitting unit 400 is arranged in the first isolation opening; the third isolation structure 700 surrounds each second isolation structure 300 and is arranged at intervals from each second isolation structure 300.

[0104] Different from the above-mentioned embodiment, the display motherboard 20 in this embodiment is further provided with a third isolation structure 700 , and the third isolation structure 700 can be used to protect the second isolation structure 300 , thereby achieving double protection of the first isolation structure 200 by the second isolation structure 300 and the third isolation structure 700 .

[0105] It is understandable that the display panel 10 according to any of the above embodiments can be obtained by cutting the display motherboard 20. The substrate 100 according to any of the above embodiments can be obtained by cutting the motherboard substrate 800.

[0106] Specifically, the second isolation structures 300 may be used as cutting areas, and the display motherboard 20 may be cut along the outer edges of each second isolation structure 300 to obtain the display panel 10 as in any of the above embodiments.

[0107] In some embodiments, the display mother board 20 includes a plurality of third isolation structures 700 , and the plurality of third isolation structures 700 respectively surround different first isolation structures 200 and second isolation structures 300 .

[0108] The display motherboard 20 can be cut along the edges of each third isolation structure 700 with the third isolation structure 700 as the cutting area to obtain a display panel 10 having a plurality of first isolation structures 200 and a plurality of second isolation structures 300 .

[0109] In some embodiments, the specific structure of the third isolation structure 700 may be the same as that of the second isolation structure 300 .

[0110] In some embodiments, the third isolation structure 700 and the second isolation structure 300 are insulated from each other or electrically connected.

[0111] In some embodiments, the display panel includes two conductive structures 120 , and the two conductive structures 120 are respectively connected to the second isolation structure 300 and the third isolation structure 700 .

[0112] Figure 5 A schematic diagram of a display device provided by an embodiment of the present application is shown. For the sake of convenience, only the part related to the present embodiment is shown, which is described in detail as follows:

[0113] The display device 30 includes: a display panel 10 as in any of the above embodiments. Since the display device 30 includes the display panel 10 in any of the above embodiments, the display device 30 has the beneficial effects of the display panel 10 in any of the above embodiments, which will not be described in detail.

[0114] The display device 30 in the embodiment of the present application includes but is not limited to mobile phones, personal digital assistants (PDA), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles and other devices with display functions.

[0115] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0116] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0117] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: substrate; A first isolation structure, which is disposed on the substrate and has a plurality of first isolation openings; a second isolation structure, the second isolation structure being disposed on the substrate, the second isolation structure at least partially surrounding the first isolation structure, and the first isolation structure and the second isolation structure being spaced apart from each other; A plurality of light emitting units, at least some of which are located in the first isolation opening.

2. The display panel according to claim 1, wherein: The first isolation structure and the second isolation structure are provided in the same layer and with the same material.

3. The display panel according to claim 1, wherein: The first isolation structure and the second isolation structure are insulated from each other or electrically connected.

4. The display panel according to claim 1, wherein: The display panel further includes a first electrode and a second electrode. In a direction away from the substrate, the first electrode, the light emitting unit, and the second electrode are stacked in sequence, and the second electrode is electrically connected to the first isolation structure.

5. The display panel according to claim 4, wherein: The display panel further comprises a pixel definition layer, the pixel definition layer comprises a pixel definition portion and a pixel opening formed by the pixel definition portion, and the pixel opening and the first isolation opening are arranged in communication with each other; The pixel opening at least partially exposes the first electrode.

6. The display panel according to claim 5, wherein: The display panel further includes a plurality of dummy light emitting units, the second isolation structure encloses a plurality of second isolation openings, and at least some of the dummy light emitting units are located in the second isolation openings; Preferably, the dummy light-emitting unit is provided in the same layer and the same material as at least part of the light-emitting units; Preferably, the orthographic projection of the second isolation structure on the substrate is in the shape of a closed ring, and the second isolation structure surrounds at least one of the first isolation structures.

7. The display panel according to claim 6, wherein: There is a gap between the first isolation structure and the second isolation structure, and part of the dummy light-emitting units are located in the gap; Preferably, the display panel further comprises a dummy electrode, wherein the dummy electrode is located on a side of the dummy light-emitting unit away from the substrate; Preferably, the gap has an orthographic projection on the substrate in the shape of a closed ring.

8. The display panel according to claim 5, wherein: The substrate includes a conductive structure electrically connected to the second isolation structure.

9. The display panel according to claim 8, wherein: The display panel further comprises a connection structure, the connection structure is located on a side of the pixel defining portion close to the substrate, and the connection structure is electrically connected to the conductive structure; The pixel definition layer is further provided with a plurality of connection openings, at least a portion of the second isolation structure is filled in the connection openings, and the second isolation structure is in contact with the connection structure; Preferably, the connection structure is provided in the same layer and with the same material as the first electrode.

10. The display panel according to claim 9, wherein: The conductive structure includes a first metal block, and the first metal block is electrically connected to the second isolation structure through the connection structure.

11. The display panel according to claim 10, wherein: The conductive structure further includes a second metal block, and the second metal block is electrically connected to the second isolation structure through another connection structure; Preferably, the first metal block and the second metal block are provided in the same layer and with the same material.

12. The display panel according to claim 9, wherein: The conductive structure includes a plurality of conductive substructures, the conductive substructures are arranged in one-to-one correspondence with the second isolation openings, the conductive substructures are electrically connected to the second isolation structure, and are electrically connected to adjacent conductive substructures; Preferably, the conductive substructure includes a first metal block and a second metal block, the first metal block is electrically connected to the second isolation structure through one of the connecting structures, the second metal block is electrically connected to the second isolation structure through another connecting structure, the first metal block is electrically connected to an adjacent conductive substructure, and the second metal block is electrically connected to another adjacent conductive substructure.

13. The display panel according to claim 6, wherein: In the thickness direction of the substrate, the dummy light emitting unit is located on a side of the pixel defining portion away from the substrate, and the dummy light emitting unit is not located in the pixel opening.

14. The display panel according to any one of claims 1 to 7, characterized in that: The first isolation structure comprises a first sub-isolation layer and a second sub-isolation layer sequentially stacked on the substrate in a direction away from the substrate, wherein an orthographic projection of the first sub-isolation layer on the substrate is located within an orthographic projection of the second sub-isolation layer on the substrate; The second isolation structure comprises a third sub-isolation layer and a fourth sub-isolation layer sequentially stacked on the substrate in a direction away from the substrate, and an orthographic projection of the third sub-isolation layer on the substrate is located within an orthographic projection of the fourth sub-isolation layer on the substrate; The first sub-isolating layer and the third sub-isolating layer are in the same layer and are made of the same material; The second sub-isolating layer and the fourth sub-isolating layer are in the same layer and are made of the same material.

15. The display panel according to claim 14, wherein: The first isolation structure further includes a fifth sub-isolation layer, and the fifth sub-isolation layer is disposed between the substrate and the first sub-isolation layer. The second isolation structure further includes a sixth sub-isolation layer, and the sixth sub-isolation layer is disposed between the substrate and the third sub-isolation layer.

16. The display panel according to claim 6, wherein: It also includes a packaging layer located on a side of the light-emitting unit and the dummy light-emitting unit away from the substrate, and the packaging layer includes a plurality of packaging parts, and the plurality of packaging parts respectively cover the light-emitting unit and the dummy light-emitting unit.

17. The display panel according to claim 16, wherein: The display panel comprises a first area and a second area at least partially surrounding the first area, the first isolation structure is located in the first area, the second isolation structure is located in the second area, and the orthographic projections of two adjacent packaging parts located in the second area on the substrate are arranged to be spaced apart from each other; Preferably, orthographic projections of two adjacent packaging parts located in the first area on the substrate overlap with each other.

18. A display motherboard, characterized in that: include: motherboard substrate; A plurality of first isolation structures, wherein the first isolation structures are disposed on the motherboard substrate and are provided with a plurality of first isolation openings; a plurality of second isolation structures, wherein the second isolation structures are disposed on the motherboard substrate, and the second isolation structures at least partially surround the first isolation structures; The first isolation structure and the second isolation structure are arranged spaced apart from each other; A plurality of light-emitting units, wherein one of the light-emitting units is disposed in the first isolation opening; A third isolation structure surrounds each of the second isolation structures and is spaced apart from each of the second isolation structures.

19. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 17.

Images