Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel includes: a substrate; the insulation structure is arranged on the substrate and located in the display area and the first transition area; the partition structure is arranged on the insulation structure and defines a first opening and a second opening corresponding to the first transition area and the opening area; the light-emitting unit is arranged on the insulating structure and located in the display area; the light-emitting unit is also arranged in the first opening; and the first encapsulation layer is located in the first transition region and covers the surface of the insulation structure. Therefore, when the light-emitting material of the light-emitting unit is evaporated, the light-emitting material can be separated, so that the light-emitting material does not exist in the first transition region, the effective packaging area of the first packaging layer can be improved, and on the premise that the same packaging effect is achieved, the width of the first transition region (namely the frame of the hole digging region) can be reduced, and the packaging efficiency is improved. And the visual effect 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] With the development of display technology, existing display devices are designed towards a high screen-to-body ratio to achieve a full screen. A punch hole screen is a design that can increase the screen-to-body ratio of a mobile phone. A punch hole screen is a screen panel that has a punch hole area for placing a camera. The edge of the punch hole area usually needs to be provided with isolation columns, packaging structures, etc., so that the border width of the punch hole area is wider, and a wider border of the punch hole area will affect the visual effect. Summary of the invention

[0003] Based on this, it is necessary to provide a display panel and a display device that can reduce the border width of the hole area.

[0004] In a first aspect, an embodiment of the present application provides a display panel, the display panel having an opening area, a display area at least partially surrounding the opening area, and a first transition area between the display area and the opening area;

[0005] The display panel comprises:

[0006] substrate;

[0007] An insulating structure, disposed on the substrate and located between the display area and the first transition area;

[0008] A partition structure, disposed on the insulating structure, and defining a first opening and a second opening corresponding to the first transition area and the opening area;

[0009] a light emitting unit, disposed on the insulating structure and located in the display area; the light emitting unit is also disposed in the first opening; and

[0010] The first packaging layer is located in the first transition region and covers the surface of the insulating structure.

[0011] In one embodiment, the insulating structure includes a first inorganic layer, and the first encapsulation layer covers a surface of the first inorganic layer;

[0012] Optionally, the insulating structure includes a pixel defining layer, and the pixel defining layer is the first inorganic layer;

[0013] Optionally, the insulating structure further comprises a gate insulating layer, a capacitor insulating layer and an interlayer dielectric layer, wherein the gate insulating layer, the capacitor insulating layer and the interlayer dielectric layer are stacked between the substrate and the first inorganic layer in a direction away from the substrate;

[0014] A portion of the surface of at least one of the gate insulating layer, the capacitor insulating layer and the interlayer dielectric layer is covered with the first encapsulation layer;

[0015] Optionally, the gate insulating layer, the capacitor insulating layer and the interlayer dielectric layer are all constructed as inorganic film layers;

[0016] Optionally, the display panel further includes a buffer layer, which is disposed between the insulating structure and the substrate; the first encapsulation layer also covers a portion of the surface of the buffer layer;

[0017] Optionally, the buffer layer is constructed as an inorganic film layer;

[0018] Optionally, the substrate has a first area corresponding to the opening area, and the orthographic projection of the insulating structure on the substrate is spaced apart from the first area.

[0019] In one embodiment, at least one groove is provided in the first transition region, and the groove penetrates at least a portion of the insulating structure along the thickness direction of the substrate; the first encapsulation layer also covers the groove wall of the at least one groove;

[0020] Optionally, a plurality of grooves are provided in the first transition region, the plurality of grooves are arranged at intervals along the radial direction of the opening region, and the first encapsulation layer also covers the groove walls of the plurality of grooves;

[0021] Optionally, the groove penetrates the first inorganic layer and the interlayer dielectric layer along the thickness direction of the substrate;

[0022] Optionally, the orthographic projection of the groove on the substrate is a closed ring shape.

[0023] In one of the embodiments, at least one first groove is further provided in the first transition region, and the at least one first groove is located on a side of the groove close to the opening region; the first groove penetrates the insulating structure along the thickness direction of the substrate;

[0024] Optionally, the display panel further comprises a first planarization layer disposed on the substrate, and the first planarization layer is located in the first transition region;

[0025] Optionally, the first planarization layer covers the insulating structure in the first transition region and fills the first groove;

[0026] Optionally, the orthographic projection of the first planarization layer on the substrate is spaced apart from the opening area;

[0027] Optionally, a plurality of the first grooves are provided in the first transition zone, and the plurality of the first grooves are arranged at intervals along the radial direction of the opening zone.

[0028] In one embodiment, the display panel further comprises a dam disposed on the substrate, wherein the dam is located between the display area and the first transition area and is disposed around the periphery of the first transition area;

[0029] Optionally, the dam comprises a dam bottom, a dam body and a dam top stacked in a direction away from the substrate;

[0030] Optionally, the dam top and the pixel defining layer are arranged in the same layer;

[0031] Optionally, the material of the dam body includes organic material;

[0032] Optionally, the dam bottom and the interlayer dielectric layer are arranged in the same layer;

[0033] Optionally, the dam bottom includes a first part, a second part and a third part stacked in a direction away from the substrate, the first part and the gate insulating layer are arranged in the same layer, the second part and the capacitor insulating layer are arranged in the same layer, and the third part and the interlayer dielectric layer are arranged in the same layer;

[0034] Optionally, a second groove is provided on the dam;

[0035] Optionally, the dam bottom is provided with the second groove penetrating the dam bottom, and part of the structure of the dam body is filled in the second groove.

[0036] In one of the embodiments, an anti-overflow structure is provided on the substrate;

[0037] The anti-overflow structure is located on a side of the dam close to the display area, and / or the anti-overflow structure is located on a side of the dam close to the first transition area;

[0038] Optionally, the anti-overflow structure includes an overflow trough;

[0039] Optionally, the overflow groove penetrates the pixel defining layer and the interlayer dielectric layer along the thickness direction of the substrate;

[0040] Optionally, a concave portion is provided on a side of the dam close to the display area, and the first inorganic layer covers the side wall and the bottom wall of the concave portion and defines the overflow groove.

[0041] In one embodiment, there is a first distance L between a side of the first transition zone close to the opening zone and a side of the first transition zone away from the opening zone, and the first distance L satisfies the following relationship: 30 μm≤L≤100 μm.

[0042] In one embodiment, the substrate includes a base and a barrier layer which are stacked, and the barrier layer is located between the base and the insulating structure;

[0043] Optionally, the orthographic projection of the barrier layer on the substrate is spaced apart from the opening area.

[0044] In one embodiment, the partition structure includes an isolator and a blocking portion stacked in a direction away from the substrate, and the outer contour of the orthographic projection of the bottom surface of the blocking portion on the substrate is located outside the outer contour of the orthographic projection of the top surface of the isolator on the substrate;

[0045] Optionally, the separator includes a first metal layer, the light-emitting unit includes a first electrode, a light-emitting functional portion, and a second electrode stacked in a direction away from the substrate, and the second electrode is electrically connected to the first metal layer;

[0046] Optionally, the isolator further comprises a second metal layer located on a side of the first metal layer close to the substrate;

[0047] Optionally, the blocking portion is a metal structure.

[0048] In a second aspect, an embodiment of the present application provides a display device, which includes the display panel in any embodiment of the first aspect.

[0049] The display panel and display device provided by the embodiment of the present application can isolate the luminescent materials of adjacent luminescent units when the luminescent materials of the luminescent units are evaporated by setting a partition structure, which is conducive to making luminescent units through pixel patterning technology and getting rid of the constraints of FMM. Furthermore, by making the partition structure surround the periphery of the first transition zone, the luminescent materials can be isolated when the luminescent materials of the luminescent units are evaporated, so that there is no luminescent material in the first transition zone. In this way, in the first transition zone, there is no luminescent material between the first encapsulation layer and the insulating structure, that is: there is no luminescent material on the side of the first encapsulation layer close to the substrate, so that the effective encapsulation area of ​​the first encapsulation layer can be increased. Therefore, under the premise of achieving the same encapsulation effect, the present application can reduce the width of the first transition zone (i.e., the border of the hole-digging zone), which is conducive to improving the visual effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the drawings required for use in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 It is a schematic diagram of the cross-sectional structure of a display panel in the related art.

[0052] Figure 2 A schematic top view of a display panel provided in accordance with an embodiment of the present application.

[0053] Figure 3 for Figure 2 A schematic diagram of the partial structure of the display panel is shown.

[0054] Figure 4A for Figure 2 A schematic diagram of a cross-sectional structure of a display panel is shown.

[0055] Figure 4B for Figure 2 Another schematic diagram of the cross-sectional structure of the display panel is shown.

[0056] Figure 5 for Figure 2 A schematic diagram of another cross-sectional structure of a display panel is shown.

[0057] Figure 6 for Figure 2 A schematic diagram of another cross-sectional structure of a display panel is shown.

[0058] Figure 7 for Figure 2 A schematic diagram of another cross-sectional structure of a display panel is shown.

[0059] Figure 8 for Figure 2 A schematic diagram of another cross-sectional structure of a display panel is shown.

[0060] Fig. 9 for Figure 2 A schematic diagram of another cross-sectional structure of a display panel is shown.

[0061] Fig.10 for Figure 2 A schematic diagram of another cross-sectional structure of a display panel is shown.

[0062] Fig.11 for Figure 2 A schematic diagram of another cross-sectional structure of a display panel is shown.

[0063] Fig.12 for Figure 2 A schematic diagram of a partial cross-sectional structure of a display panel is shown.

[0064] Fig.13 A schematic diagram of the structure of a display device provided in one embodiment of the present application.

[0065] Description of reference numerals:

[0066] 2. Luminescent material; 3. First inorganic encapsulation layer; 4. Organic encapsulation layer; 5. Second inorganic encapsulation layer; 6. Isolation column; 7. Pixel definition layer;

[0067] 1. Display device; 10. Display panel; 10a. Opening area; 10b. Display area; 10c. First transition area; 10d. Second transition area; 11. Substrate; 111. Base; 112. Barrier layer; 12. Insulation structure; 12a. Groove; 12b. First groove; 12c. Overflow groove; 121. Pixel defining layer; 122. Gate insulation layer; 123. Capacitor insulation layer; 124. Interlayer dielectric layer; 13. Partition structure; 13a. First opening; 13b. Second opening; 14. Light-emitting unit; 151. First encapsulation layer; 152. Second encapsulation layer; 153. Sub-encapsulation part; 16. Buffer layer; 17. First planarization layer; 18. Dam; 18a. Second groove; 181. Dam bottom; 1811. First part; 1812. Second part; 1813. Third part; 182. Dam body; 183. Dam top. DETAILED DESCRIPTION

[0068] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0069] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, they do not represent any order, quantity or importance, but are only used to distinguish different components. These terms are only used to distinguish one element from another. For example, without departing from the scope of the present application, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0071] Reference Figure 1 As shown, in the related art, in the process of making the display panel, the structure of the hole area HA usually needs to be cut off for placing the camera. In order to prevent external water and oxygen from entering the display area AA of the display panel from the hole area HA, it is usually necessary to set an isolation column 6 in the border area BA. Furthermore, in order to ensure the reliability of the package, it is usually necessary to set more than 5 isolation columns 6, so that the width of the border area BA is wider (the width of the border area BA is usually greater than 100μm). In this way, on the one hand, the wider border area BA will cause a circle of black edges to appear around the camera, affecting the visual effect; on the other hand, it causes the display area AA to be compressed, reducing the effective display area.

[0072] Specifically, the light emitting units in the display area AA are encapsulated by the stacked first inorganic encapsulation layer 3 , the organic encapsulation layer 4 , and the second inorganic encapsulation layer 5 . The frame area BA is encapsulated by the first inorganic encapsulation layer 3 and the second inorganic encapsulation layer 5 .

[0073] The applicant has found through research that when making the light-emitting unit, the light-emitting material 2 will cover the border area BA, specifically, the light-emitting material 2 covers the surface of the pixel definition layer 7 and the top surface of the isolation column 6. In this way, after the first inorganic encapsulation layer 3 covers the border area BA, only the first inorganic encapsulation layer 3 on the side wall of the isolation column 6 can form an effective package. Since water oxygen can diffuse along the light-emitting material 2 on the surface of the pixel definition layer 7 and the light-emitting material 2 on the top surface of the isolation column 6, the first inorganic encapsulation layer 3 on the top surface of the isolation column 6 and the surface of the pixel definition layer 7 are both invalid packages. In this case, in order to improve the reliability of the package, a larger number of isolation columns 6 must be provided, which leads to a wider width of the border area BA.

[0074] Furthermore, the applicant uses a partition structure for spacing adjacent light-emitting units, and surrounds the partition structure at the periphery of the first transition zone (the same as the border zone above). In this way, when the light-emitting material of the light-emitting unit is evaporated, the light-emitting material can be isolated, so that there is no light-emitting material in the first transition zone. In this way, in the first transition zone, there is no light-emitting material between the first encapsulation layer and the insulating structure, that is: there is no light-emitting material on the side of the first encapsulation layer close to the substrate, thereby increasing the effective encapsulation area of ​​the first encapsulation layer. Therefore, under the premise of achieving the same encapsulation effect, the present application can reduce the width of the first transition zone (that is, the border of the hole area), which is beneficial to improving the visual effect.

[0075] Specifically, refer to Figure 2 , Figure 3 , Figure 4A and Fig.12 As shown, an embodiment of the present application provides a display panel 10, which may be an organic light emitting diode display panel 10 (Organic Light Emitting Diode, referred to as OLED) or a quantum dot electroluminescent display panel 10 (Quantum Dot Light Emitting Diodes, referred to as QLED).

[0076] The display panel 10 comprises an opening area 10a, a display area 10b at least partially surrounding the opening area 10a, and a first transition area 10c between the display area 10b and the opening area 10a.

[0077] The display panel 10 includes a substrate 11, an insulating structure 12, a partition structure 13, a light-emitting unit 14 and a first encapsulation layer 151. The insulating structure 12 is disposed on the substrate 11 and is located in the display area 10b and the first transition area 10c. The partition structure 13 is disposed on the insulating structure 12 and defines a first opening 13a and a second opening 13b corresponding to the first transition area 10c and the opening area 10a. The light-emitting unit 14 is disposed on the insulating structure 12 and is located in the display area 10b. The light-emitting unit 14 is also disposed in the first opening 13a. The first encapsulation layer 151 is located in the first transition area 10c and covers the surface of the insulating structure 12, that is, in the first transition area 10c, the first encapsulation layer 151 is in direct contact with the insulating structure 12.

[0078] In the embodiment of the present application, the "partition structure 13" refers to a structure that can separate the luminescent materials of adjacent luminescent units 14 when evaporating the luminescent materials of the luminescent units 14. In the embodiment of the present application, by setting the partition structure 13, the luminescent materials of adjacent luminescent units 14 can be separated when evaporating the luminescent materials of the luminescent units 14, which is conducive to manufacturing the luminescent units 14 through the pixel patterning technology and getting rid of the constraints of FMM. In one example, the partition structure 13 can be a single-layer structure, and in another example, the partition structure 13 can also be a laminated structure.

[0079] It should be noted that the first encapsulation layer 151 is an inorganic film layer. In the embodiment of the present application, the display panel 10 further includes a second encapsulation layer 152 and a sub-encapsulation portion 153, one sub-encapsulation portion 153 encapsulates one light-emitting unit 14, the second encapsulation layer 152 is an organic film layer, the second encapsulation layer 152 covers all the sub-encapsulation portions 153, the first encapsulation layer 151 covers the second encapsulation layer 152, and at the same time, the first encapsulation layer 151 also extends to cover the first transition region 10c.

[0080] In the embodiments of the present application, Figure 2 and Figure 3 As shown, the display area 10b is arranged around the periphery of the opening area 10a, and the first transition area 10c is also arranged around the periphery of the opening area 10a. In this way, when the light-emitting material of the light-emitting unit 14 is evaporated, the partition structure 13 can separate the light-emitting material, that is, the light-emitting material in the first transition area 10c is separated from the light-emitting material in the display area 10b. In this way, in the subsequent process, the luminescent material in the first transition zone 10c can be removed so that there is no luminescent material in the first transition zone 10c. In this way, in the first transition zone 10c, there is no luminescent material between the first encapsulation layer 151 and the insulating structure 12, that is, there is no luminescent material on the side of the first encapsulation layer 151 close to the substrate 11. When the first encapsulation layer 151 covers the first transition zone 10c, the area covered by the first encapsulation layer 151 can become an effective encapsulation, thereby increasing the effective encapsulation area of ​​the first encapsulation layer 151. Therefore, under the premise of achieving the same encapsulation effect, compared with the display panel 10 in the related technology, the present application can reduce the width of the first transition zone 10c (that is, the border area BA mentioned above). On the one hand, it can alleviate the black border caused by the wider first transition zone 10c, which is beneficial to improving the visual effect; on the other hand, it can increase the area of ​​the display area 10b and improve the display effect of the display panel 10.

[0081] In one embodiment, the insulating structure 12 includes a first inorganic layer, and the first encapsulation layer 151 covers the surface of the first inorganic layer in the first transition region 10 c.

[0082] In this way, in the first transition zone 10c, the first encapsulation layer 151 is in direct contact with the inorganic film layer, and external water and oxygen are not easy to diffuse to the display area 10b along the boundary between the first encapsulation layer 151 and the pixel defining layer 121, which is beneficial to further improve the encapsulation reliability of the first encapsulation layer 151 in the first transition zone 10c.

[0083] In one embodiment, referring to Figure 4A , Figure 4B , Figure 5 , Figure 6 and Figure 7 As shown, the insulating structure 12 includes a pixel defining layer 121, which is a first inorganic layer. Exemplarily, the pixel defining layer 121 is located in the display area 10b and the first transition area 10c, and in the first transition area 10c, the first encapsulation layer 151 is in direct contact with the pixel defining layer 121.

[0084] In this way, in the first transition region 10c, the first encapsulation layer 151 is in direct contact with the pixel defining layer 121, and external water and oxygen are not easy to diffuse to the display area 10b along the boundary between the first encapsulation layer 151 and the pixel defining layer 121, which is beneficial to further improve the encapsulation reliability of the first encapsulation layer 151 in the first transition region 10c.

[0085] In one embodiment, the insulating structure 12 further includes a gate insulating layer 122, a capacitor insulating layer 123, and an interlayer dielectric layer 124, and the gate insulating layer 122, the capacitor insulating layer 123, and the interlayer dielectric layer 124 are stacked between the substrate 11 and the first inorganic layer (e.g., the pixel defining layer 121) in a direction away from the substrate 11. Among the gate insulating layer 122, the capacitor insulating layer 123, and the interlayer dielectric layer 124, a portion of the surface of at least one is covered with a first encapsulation layer 151.

[0086] That is, in the first transition region 10 c , the first encapsulation layer 151 is in direct contact with at least one of the gate insulating layer 122 , the capacitor insulating layer 123 and the interlayer dielectric layer 124 .

[0087] This is beneficial to increasing the packaging area of ​​the first packaging layer 151 , thereby increasing the packaging path of the first packaging layer 151 , and further increasing the packaging reliability of the first packaging layer 151 in the first transition region 10 c .

[0088] In one embodiment, the gate insulating layer 122, the capacitor insulating layer 123 and the interlayer dielectric layer 124 are all constructed as inorganic film layers. In this way, in the first transition region 10c, the first encapsulation layer 151 is in direct contact with the inorganic film layer, and the water and oxygen in the outside are not easy to diffuse to the display region 10b along the boundary between the first encapsulation layer 151 and the insulating structure 12, which is conducive to further improving the encapsulation reliability of the first encapsulation layer 151 in the first transition region 10c.

[0089] In one embodiment, referring to Figure 8 As shown, the display panel 10 further includes a buffer layer 16, which is disposed between the insulating structure 12 and the substrate 11. The first encapsulation layer 151 also covers a portion of the surface of the buffer layer 16.

[0090] That is, in the first transition region 10 c , the first encapsulation layer 151 is still in direct contact with a portion of the buffer layer 16 .

[0091] This is beneficial to increasing the packaging area of ​​the first packaging layer 151 , thereby increasing the packaging path of the first packaging layer 151 , and further increasing the packaging reliability of the first packaging layer 151 in the first transition region 10 c .

[0092] In one embodiment, the buffer layer 16 is constructed as an inorganic film layer.

[0093] In this way, in the first transition zone 10c, the first encapsulation layer 151 is in direct contact with the inorganic film layer, and external water and oxygen are not easy to diffuse to the display area 10b along the boundary between the first encapsulation layer 151 and the buffer layer 16, which is beneficial to further improve the encapsulation reliability of the first encapsulation layer 151 in the first transition zone 10c.

[0094] In one embodiment, referring to Figure 4A-Figure 8 As shown, the substrate 11 has a first area (not shown) corresponding to the opening area 10a, and the orthographic projection of the insulating structure 12 on the substrate 11 is spaced apart from the first area.

[0095] It can be understood that the edge of the first area is the cutting position, and the above setting is equivalent to making the edge of the insulating structure 12 have a certain distance from the cutting position. When the first area is cut to form the opening area 10a, the insulating structure 12 will not be cut, thereby avoiding cracks in the insulating structure 12.

[0096] In one embodiment, the substrate 11 includes a base 111 and a barrier layer 112 which are stacked, and the barrier layer 112 is located between the base 111 and the insulating structure 12 .

[0097] In one embodiment, the orthographic projection of the barrier layer 112 on the substrate 111 is spaced apart from the first region. Thus, when the first region is cut to form the opening area 10a, the barrier layer 112 will not be cut, thereby preventing the barrier layer 112 from cracking.

[0098] In one embodiment, the substrate 11, the insulating structure 12 and the first encapsulation layer 151 are flush with the edge of the opening area 10a. Figure 4BAs shown, the substrate 111 , the barrier layer 112 , the pixel defining layer 121 and the first encapsulation layer 151 are flush with the edge of the opening area 10 a .

[0099] In one embodiment, referring to Figure 4A and Figure 4B As shown, the display panel 10 further includes a dam 18 disposed on the substrate 11 . The dam 18 is located between the display area 10 b and the first transition area 10 c , and is disposed around the periphery of the first transition area 10 c .

[0100] By providing the dam 18 , the organic material in the display area 10 b can be blocked to prevent the organic material from overflowing into the first transition area 10 c .

[0101] In the embodiment of the present application, a second transition area 10d is further provided between the display area 10b and the first transition area 10c, and the second transition area 10d connects the display area 10b and the first transition area 10c.

[0102] In one embodiment, referring to Figure 4A , Figure 4B , Figure 5 , Figure 6 and Figure 7 As shown, the dam 18 includes a dam bottom 181 , a dam body 182 and a dam top 183 which are stacked in a direction away from the substrate 11 .

[0103] In one example, the dam bottom 181 refers to a portion located at the bottom of the dam 18 , the dam body 182 refers to a portion located in the middle of the dam 18 , and the dam top refers to a portion located on the surface of the dam 18 .

[0104] In one embodiment, referring to Figure 4A , Figure 4B , Figure 5 , Figure 6 and Figure 7 As shown, the top of the dam 18 is disposed in the same layer as the pixel defining layer 121. It can also be understood that the top of the dam 18 is formed by a portion of the pixel defining layer 121.

[0105] In one embodiment, the material of the dam 182 includes an organic material. In this way, the height of the dam 18 can be increased by means of the organic material. In one example, the dam 182 is disposed in the same layer as the planarization layer (not shown) of the display area 10b, that is, the dam 182 is formed by a part of the planarization layer.

[0106] In one embodiment, the dam bottom 181 is disposed in the same layer as the interlayer dielectric layer 124. It can also be understood that the bottom of the dam 18 is formed by a portion of the interlayer dielectric layer 124.

[0107] In one embodiment, the dam bottom 181 includes a first portion 1811, a second portion 1812, and a third portion 1813 stacked in a direction away from the substrate 11, the first portion 1811 and the gate insulating layer 122 are arranged in the same layer, the second portion 1812 and the capacitor insulating layer 123 are arranged in the same layer, and the third portion 1813 and the interlayer dielectric layer 124 are arranged in the same layer. It can also be understood that the bottom of the dam 18 is composed of the gate insulating layer 122, the capacitor insulating layer 123, and the interlayer dielectric layer 124.

[0108] It should be noted that the dam 18 can be formed by stacking various film layers on the substrate 11 , and the embodiment of the present application does not limit the stacking method of the dam 18 and the specific structure of the dam 18 .

[0109] In one embodiment, referring to Fig. 9 As shown, a second groove 18a is provided on the dam 18. In this way, the crack can be slowed down from extending into the display area 10b.

[0110] In one embodiment, a second groove 18 a penetrating the dam bottom 181 is disposed on the dam bottom 181 , and a portion of the structure of the dam body 182 is filled in the second groove 18 a .

[0111] In this way, on the one hand, the expansion of the crack into the display area 10b can be slowed down; on the other hand, the crack expansion stress can be absorbed by the organic material to further slow down the expansion of the crack into the display area 10b.

[0112] In one embodiment, an anti-overflow structure is disposed on the substrate 11. The anti-overflow structure is located on a side of the dam 18 close to the display area 10b, and / or the anti-overflow structure is located on a side of the dam 18 close to the first transition area 10c.

[0113] By providing the anti-overflow structure, the organic material in the display area 10 b can be prevented from overflowing to the first transition area 10 c.

[0114] In one embodiment, the overflow prevention structure includes an overflow groove 12c. Thus, when the organic material overflows, the organic material can overflow into the overflow groove 12c.

[0115] In one embodiment, referring to Figure 5 , Figure 6 and Figure 7 As shown, the overflow groove 12 c penetrates the pixel defining layer 121 and the interlayer dielectric layer 124 along the thickness direction of the substrate 11 .

[0116] In this way, it is equivalent to digging an overflow groove 12c on the pixel defining layer 121 and the interlayer dielectric layer 124. Further, the bottom of the overflow groove 12c is located on the surface of the capacitor insulating layer 123, and the sidewall of the overflow groove 12c is located on the pixel defining layer 121 and the interlayer dielectric layer 124. Since the capacitor insulating layer 123, the pixel defining layer 121 and the interlayer dielectric layer 124 are all inorganic film layers, the groove wall of the overflow groove 12c is an inorganic groove wall. When the organic material of the second encapsulation layer 152 overflows into the overflow groove 12c, an inorganic+organic+inorganic encapsulation structure can be formed in the area where the overflow groove 12c is located, thereby improving the encapsulation reliability of the area where the overflow groove 12c is located.

[0117] In one embodiment, referring to Figure 4A and Figure 4B As shown, a recessed portion (not shown) is provided on one side of the dam 18 close to the display area 10b, and a first inorganic layer (eg, a pixel defining layer 121) covers the sidewalls and bottom wall of the recessed portion and defines an overflow groove 12c.

[0118] In this way, it is equivalent to forming an overflow groove 12c in the surface depression of the pixel defining layer 121. Therefore, the groove wall of the overflow groove 12c is also an inorganic groove wall. When the organic material of the second encapsulation layer 152 overflows into the overflow groove 12c, an inorganic + organic + inorganic encapsulation structure can be formed in the area where the overflow groove 12c is located, thereby improving the encapsulation reliability of the area where the overflow groove 12c is located.

[0119] In one embodiment, referring to Figure 4A and Figure 4B As shown, there is a first distance L between the side of the first transition zone 10c close to the opening zone 10a and the side of the first transition zone 10c far from the opening zone 10a, and the first distance L satisfies the following relationship: 30μm≤L≤100μm.

[0120] Illustratively, the first distance L may be 30 μm, 40 μm, 50 μm, 55 μm, 60 μm, 75 μm, 82 μm, 88 μm, 93 μm, 98 μm, or 100 μm.

[0121] Here, the first distance L is equal to the width of the first transition area 10c mentioned above. By making the length of the first distance L within the above range, the width of the first transition area 10c can be reduced. On the one hand, the black edge caused by the wide first transition area 10c can be alleviated, which is beneficial to improving the visual effect; on the other hand, the area of ​​the display area 10b can be increased, and the display effect of the display panel 10 can be improved.

[0122] In one embodiment, referring to Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, at least one groove 12a is provided in the first transition region 10c, and the groove 12a penetrates at least a portion of the insulating structure 12 along the thickness direction of the substrate 11, and the first encapsulation layer 151 also covers the groove wall of the at least one groove 12a.

[0123] By setting the groove 12a, on the one hand, the coverage area of ​​the first encapsulation layer 151 in the first transition zone 10c can be increased, thereby improving the encapsulation path of the first encapsulation layer 151, and further improving the encapsulation reliability of the first encapsulation layer 151 in the first transition zone 10c, and at the same time it is beneficial to reduce the width of the first transition zone 10c; on the other hand, it can reduce the stress in the first transition zone 10c, which is beneficial to improve the reliability of the display panel 10.

[0124] In one embodiment, a plurality of grooves 12a are disposed in the first transition region 10c, and the plurality of grooves 12a are arranged at intervals along the radial direction of the opening region 10a, and the first encapsulation layer 151 also covers the groove walls of the plurality of grooves 12a. It can be understood that the radial direction of the opening region 10a refers to the direction from the opening region 10a to the display region 10b.

[0125] By providing a plurality of grooves 12a, the coverage area of ​​the first encapsulation layer 151 in the first transition region 10c can be increased, thereby improving the encapsulation path of the first encapsulation layer 151 and further improving the encapsulation reliability of the first encapsulation layer 151 in the first transition region 10c.

[0126] In one embodiment, the groove 12 a penetrates the first inorganic layer (eg, the pixel defining layer 121 ) and the interlayer dielectric layer 124 along the thickness direction of the substrate 11 .

[0127] In this way, it is equivalent to digging a groove 12a on the pixel defining layer 121 and the interlayer dielectric layer 124. Further, the bottom of the groove 12a is located on the surface of the capacitor insulating layer 123, and the sidewall of the groove 12a is located on the pixel defining layer 121 and the interlayer dielectric layer 124. Since the capacitor insulating layer 123, the pixel defining layer 121 and the interlayer dielectric layer 124 are all inorganic film layers, the groove wall of the groove 12a is an inorganic groove wall. When the first encapsulation layer 151 covers the groove wall of the groove 12a, the first encapsulation layer 151 is in direct contact with the inorganic groove wall, and the external water and oxygen are not easy to diffuse to the display area 10b along the boundary between the first encapsulation layer 151 and the inorganic groove wall, which is conducive to further improving the encapsulation reliability of the first encapsulation layer 151 in the first transition area 10c.

[0128] In one embodiment, the orthographic projection of the groove 12a on the substrate 11 is a closed ring shape, that is, the groove 12a is an annular groove 12a. Exemplarily, the groove 12a can be a circular ring groove 12a, a rectangular ring groove 12a, or a triangular ring groove 12a.

[0129] In one embodiment, referring to Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, at least one first groove 12b is further provided in the first transition region 10c, and the at least one first groove 12b is located on the side of the groove 12a close to the opening region 10a. The first groove 12b penetrates the insulating structure 12 along the thickness direction of the substrate 11. By providing the first groove 12b, the cracks in the opening region 10a can be slowed down from extending into the first transition region 10c.

[0130] In one embodiment, referring to Figure 6 and Figure 7 As shown, the display panel 10 further includes a first planarization layer 17 disposed on the substrate 11, and the first planarization layer 17 is located in the first transition region 10c. Exemplarily, the material of the first planarization layer 17 is an organic material.

[0131] In one embodiment, referring to Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, the first planarization layer 17 covers the insulating structure 12 in the first transition region 10 c and fills the first groove 12 b .

[0132] In this way, the crack propagation stress can be absorbed by the first planarization layer 17, further slowing down the crack propagation into the first transition region 10c.

[0133] In one embodiment, the orthographic projection of the first planarization layer 17 on the substrate 11 is spaced apart from the opening area 10 a .

[0134] The above arrangement is equivalent to ensuring that a certain distance exists between the edge of the first planarization layer 17 and the cutting position. When the opening area 10 a is cut, the first planarization layer 17 will not be cut, thereby avoiding cutting defects in the first planarization layer 17 .

[0135] In another opposite example, refer to Figure 7As shown, the orthographic projection of the first planarization layer 17 on the substrate 11 coincides with the edge of the opening area 10a. Thus, when the opening area 10a is cut, since the first planarization layer 17 is an organic film layer, the first planarization layer 17 can absorb the stress on the substrate 11 and reduce the tendency of cracks on the substrate 11. It can be understood that the first planarization layer 17 is an organic film layer, and therefore, when the first planarization layer 17 is cut, the first planarization layer 17 will not generate cracks.

[0136] In one embodiment, a plurality of first grooves 12b are disposed in the first transition region 10c, and the plurality of first grooves 12b are arranged at intervals along the radial direction of the opening region 10a.

[0137] By providing a plurality of first grooves 12 b , the ability to slow down crack expansion can be improved, thereby improving the reliability of the display panel 10 .

[0138] In one embodiment, referring to Fig.12 As shown, the display area 10 b is also provided with a first planarization layer 17 , and the first planarization layer 17 is located between the pixel defining layer 121 and the interlayer dielectric layer 124 .

[0139] In one embodiment, referring to Fig.12 As shown, the partition structure 13 includes an isolating body (not marked in the figure) and a blocking portion (not marked in the figure) stacked in a direction away from the substrate 11, and the outer contour of the orthographic projection of the bottom surface of the blocking portion on the substrate 11 is located outside the outer contour of the orthographic projection of the top surface of the isolating body on the substrate 11.

[0140] In this way, an undercut structure may be formed on the partition structure 13 , so that the light-emitting materials of adjacent light-emitting units 14 may be partitioned.

[0141] In one embodiment, the insulator includes a first metal layer (not marked in the figure), the light-emitting unit 14 includes a first electrode (not marked in the figure) stacked in a direction away from the substrate 11, a light-emitting functional part (not marked in the figure) and a second electrode (not marked in the figure), and the second electrode is electrically connected to the first metal layer.

[0142] It is understandable that the first electrode may be an anode and the second electrode may be a cathode. A pixel driving circuit is formed on the substrate 11, and the first electrode and the second electrode are electrically connected to the pixel driving circuit. The light-emitting functional portion includes at least a light-emitting layer (Emission layer, EML), and may also include a hole injection layer (HIL), a hole transport layer (HTL), an electron injection layer (EIL), an electron transport layer (ETL), a hole blocking layer 112 (HBL) and an electron blocking layer 112 (EBL) One or more. Alternatively, the light-emitting functional portion may also be a laminated light-emitting layer, that is, including at least two light-emitting layers and a charge generation layer (CGL) located between each adjacent light-emitting layer.

[0143] In one example, the material of the separator includes at least one of a metal and a metal oxide. For example, the metal may be silver, copper, titanium, aluminum, etc. The metal oxide may be tin oxide, zinc oxide, cadmium oxide, indium oxide, indium tin oxide, zinc indium oxide, zinc gallium oxide, zinc aluminum oxide, titanium tantalum oxide, etc.

[0144] In one example, the insulator includes a first metal layer (not shown) and a second metal layer (not shown) stacked in a direction away from the substrate 11, and the orthographic projection outer contour of the first metal layer on the substrate 11 is located outside the orthographic projection outer contour of the second metal layer on the substrate 11. Here, the first metal layer and the second metal layer are stacked in sequence in a direction away from the substrate 11. In one example, the material of the first metal layer can be Mo, and the material of the second metal layer can be Al.

[0145] In one embodiment, the barrier is a metal structure, that is, the material of the barrier is metal. Exemplarily, the material of the barrier is Ti. In this way, by providing three stacked metal layers, the resistance of the partition structure 13 can be reduced, thereby reducing the power consumption of the display panel 10.

[0146] In one example, the cross-sectional shape of the partition structure 13 formed by the first metal layer, the second metal layer and the barrier portion may be an I-shape.

[0147] Second, refer to Fig.13 As shown, an embodiment of the present application provides a display device 1, which includes the display panel 10 in any embodiment of the first aspect.

[0148] The display device 1 can be a laptop computer, a mobile phone, a wireless device, a personal digital assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a camcorder, a game console, a watch, a clock, a calculator, a TV monitor, a flat-panel display, a computer monitor, a car display (e.g., an odometer display, etc.), a navigator, a cockpit controller and / or display, a display of a camera view (e.g., a display of a rearview camera in a vehicle), an electronic photo, an electronic billboard or sign, a projector, etc.

[0149] In the display device provided in the embodiment of the present application, when the light-emitting material of the light-emitting unit 14 is evaporated, the partition structure 13 can partition the light-emitting material, that is, the light-emitting material in the first transition area 10c is partitioned from the light-emitting material in the display area 10b. In this way, in the subsequent process, the luminescent material in the first transition zone 10c can be removed so that there is no luminescent material in the first transition zone 10c. In this way, in the first transition zone 10c, there is no luminescent material between the first encapsulation layer 151 and the insulating structure 12, that is, there is no luminescent material on the side of the first encapsulation layer 151 close to the substrate 11. When the first encapsulation layer 151 covers the first transition zone 10c, the area covered by the first encapsulation layer 151 can become an effective encapsulation, thereby increasing the effective encapsulation area of ​​the first encapsulation layer 151. Therefore, under the premise of achieving the same encapsulation effect, compared with the display panel 10 in the related technology, the present application can reduce the width of the first transition zone 10c (that is, the border area BA mentioned above). On the one hand, it can alleviate the black border caused by the wider first transition zone 10c, which is beneficial to improving the visual effect; on the other hand, it can increase the area of ​​the display area 10b and improve the display effect of the display panel 10.

[0150] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0151] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0152] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: The display panel comprises an opening area, a display area at least partially surrounding the opening area, and a first transition area between the display area and the opening area; The display panel comprises: substrate; An insulating structure, disposed on the substrate and located between the display area and the first transition area; A partition structure, disposed on the insulating structure, and defining a first opening and a second opening corresponding to the first transition area and the opening area; a light emitting unit, disposed on the insulating structure and located in the display area; the light emitting unit is also disposed in the first opening; and The first packaging layer is located in the first transition region and covers the surface of the insulating structure.

2. The display panel according to claim 1, characterized in that: The insulating structure comprises a first inorganic layer, and the first encapsulation layer covers a surface of the first inorganic layer; Optionally, the insulating structure includes a pixel defining layer, and the pixel defining layer is the first inorganic layer; Optionally, the insulating structure further comprises a gate insulating layer, a capacitor insulating layer and an interlayer dielectric layer, wherein the gate insulating layer, the capacitor insulating layer and the interlayer dielectric layer are stacked between the substrate and the first inorganic layer in a direction away from the substrate; A portion of the surface of at least one of the gate insulating layer, the capacitor insulating layer and the interlayer dielectric layer is covered with the first encapsulation layer; Optionally, the gate insulating layer, the capacitor insulating layer and the interlayer dielectric layer are all constructed as inorganic film layers; Optionally, the display panel further includes a buffer layer, which is disposed between the insulating structure and the substrate; the first encapsulation layer also covers a portion of the surface of the buffer layer; Optionally, the buffer layer is constructed as an inorganic film layer; Optionally, the substrate has a first area corresponding to the opening area, and the orthographic projection of the insulating structure on the substrate is spaced apart from the first area.

3. The display panel according to claim 2, characterized in that: At least one groove is provided in the first transition region, and the groove penetrates at least a portion of the insulating structure along the thickness direction of the substrate; the first encapsulation layer also covers the groove wall of the at least one groove; Optionally, a plurality of the grooves are provided in the first transition region, and the plurality of the grooves are arranged at intervals along the radial direction of the opening region, and the first encapsulation layer also covers the groove walls of the plurality of grooves; Optionally, the groove penetrates the first inorganic layer and the interlayer dielectric layer along the thickness direction of the substrate; Optionally, the orthographic projection of the groove on the substrate is a closed ring shape.

4. The display panel according to claim 3, characterized in that: At least one first groove is further provided in the first transition region, and the at least one first groove is located on a side of the groove close to the opening region; the first groove penetrates the insulating structure along the thickness direction of the substrate; Optionally, the display panel further comprises a first planarization layer disposed on the substrate, and the first planarization layer is located in the first transition region; Optionally, the first planarization layer covers the insulating structure in the first transition region and fills the first groove; Optionally, the orthographic projection of the first planarization layer on the substrate is spaced apart from the opening area; Optionally, a plurality of the first grooves are provided in the first transition zone, and the plurality of the first grooves are arranged at intervals along the radial direction of the opening zone.

5. The display panel according to claim 2, characterized in that: The display panel further includes a dam disposed on the substrate, wherein the dam is located between the display area and the first transition area and is disposed around the periphery of the first transition area; Optionally, the dam comprises a dam bottom, a dam body and a dam top stacked in a direction away from the substrate; Optionally, the dam top and the pixel defining layer are arranged in the same layer; Optionally, the material of the dam body includes organic material; Optionally, the dam bottom and the interlayer dielectric layer are arranged in the same layer; Optionally, the dam bottom includes a first part, a second part and a third part stacked in a direction away from the substrate, the first part and the gate insulating layer are arranged in the same layer, the second part and the capacitor insulating layer are arranged in the same layer, and the third part and the interlayer dielectric layer are arranged in the same layer; Optionally, a second groove is provided on the dam; Optionally, the dam bottom is provided with the second groove penetrating the dam bottom, and part of the structure of the dam body is filled in the second groove.

6. The display panel according to claim 5, characterized in that: An anti-overflow structure is provided on the substrate; The anti-overflow structure is located on a side of the dam close to the display area, and / or the anti-overflow structure is located on a side of the dam close to the first transition area; Optionally, the anti-overflow structure includes an overflow groove; Optionally, the overflow groove penetrates the pixel defining layer and the interlayer dielectric layer along the thickness direction of the substrate; Optionally, a concave portion is provided on a side of the dam close to the display area, and the first inorganic layer covers the side wall and the bottom wall of the concave portion and defines the overflow groove.

7. The display panel according to any one of claims 1 to 6, characterized in that: A first distance L exists between a side of the first transition zone close to the opening zone and a side of the first transition zone far from the opening zone, and the first distance L satisfies the following relationship: 30 μm≤L≤100 μm.

8. The display panel according to any one of claims 1 to 6, characterized in that: The substrate comprises a base and a barrier layer which are stacked, and the barrier layer is located between the base and the insulating structure; Optionally, the orthographic projection of the barrier layer on the substrate is spaced apart from the opening area.

9. The display panel according to any one of claims 1 to 6, characterized in that: The partition structure comprises an isolator and a blocking portion stacked in a direction away from the substrate, wherein the outer contour of the orthographic projection of the bottom surface of the blocking portion on the substrate is located outside the outer contour of the orthographic projection of the top surface of the isolator on the substrate; Optionally, the separator includes a first metal layer, the light-emitting unit includes a first electrode, a light-emitting functional portion, and a second electrode stacked in a direction away from the substrate, and the second electrode is electrically connected to the first metal layer; Optionally, the isolator further comprises a second metal layer located on a side of the first metal layer close to the substrate; Optionally, the blocking portion is a metal structure.

10. A display device, characterized in that: The invention comprises a display panel as claimed in any one of claims 1 to 9.

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