Display panel, preparation method thereof and display device

Abstract

The invention provides a display panel, a preparation method thereof and a display device, the display panel is provided with a display area and a non-display area surrounding at least part of the display area, and the display panel comprises a substrate; the pixel definition layer is located on one side of the substrate, and the pixel definition layer extends from the display area to the non-display area; the packaging structure is located on the side, away from the substrate, of the pixel definition layer, and the packaging structure comprises a first packaging layer; the touch control structure is located on the side, away from the substrate, of the packaging structure, the touch control structure comprises a first insulating layer, the first packaging layer and the first insulating layer both extend to the non-display area from the display area, and the edge of the first insulating layer exceeds the edge of the first packaging layer and makes contact with the pixel definition layer. According to the technical scheme, the packaging reliability can be improved.

Description

Technical Field

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

[0002] With the development of display technology, organic light-emitting diodes (OLEDs) have been widely used in display products due to their advantages such as low power consumption, high brightness, wide viewing angle, and high contrast. In the traditional display panel preparation process, the patterning of luminous pixels is usually achieved through a fine metal mask (FMM). FMM technology is mature and has rich experience in mass production. However, FMM technology also has problems such as limited precision, high development costs, and long development cycles. The fine metal mask-free technology eliminates the limitations of traditional OLED processes on display size, resolution, and other screen performance, and has the advantages of high performance, full-area size, and agile delivery. Patents CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN118678742A, CN118785761A, CN115224220A, CN118678729A, CN118660529A, and CN118660589A describe the non-fine metal mask technology for reference.

[0003] In order to prevent water and oxygen from damaging OLED devices, a packaging structure is usually provided above the OLED. However, the reliability of the packaging structure needs to be further improved. Summary of the Invention

[0004] In order to solve the above problems, embodiments of the present application provide a display panel, a method for manufacturing the same, and a display device.

[0005] In a first aspect, an embodiment of the present application provides a display panel, comprising: a display area and a non-display area surrounding at least a portion of the display area, the display panel comprising: a substrate; a pixel definition layer located on one side of the substrate, the pixel definition layer extending from the display area to the non-display area; an encapsulation structure located on a side of the pixel definition layer away from the substrate, the encapsulation structure comprising a first encapsulation layer; a touch structure located on a side of the encapsulation structure away from the substrate, the touch structure comprising a first insulating layer; wherein both the first encapsulation layer and the first insulating layer extend from the display area to the non-display area, and an edge of the first insulating layer extends beyond an edge of the first encapsulation layer and contacts the pixel definition layer.

[0006] In combination with the first aspect, in the non-display area, the first encapsulation layer and the pixel definition layer are in contact; preferably, the encapsulation structure also includes a second encapsulation layer, the second encapsulation layer is located on the side of the first encapsulation layer close to the substrate, and the second encapsulation layer is located in the display area; preferably, the pixel definition layer encloses a plurality of pixel openings in the display area; the display panel also includes a plurality of light-emitting devices, at least part of the light-emitting devices are located in the pixel openings; preferably, the second encapsulation layer includes a plurality of spaced encapsulation units, the encapsulation units correspond one-to-one to the pixel openings, and the orthographic projection of the encapsulation units on the substrate covers the orthographic projection of the light-emitting devices on the substrate; preferably, the display panel also includes a dam, the dam is located in the non-display area and between the substrate and the pixel definition layer, and the dam is arranged around the display area; the encapsulation structure also includes a third encapsulation layer, the third encapsulation layer is located between the first encapsulation layer and the second encapsulation layer, the orthographic projection of the third encapsulation layer on the substrate covers the orthographic projection of the second encapsulation layer on the substrate, and the third encapsulation layer extends from the display area to the non-display area and ends at the side of the dam close to the display area; preferably, the materials of the first encapsulation layer and the second encapsulation layer include inorganic materials, and the material of the third encapsulation layer includes organic materials.

[0007] In combination with the first aspect, the touch structure also includes a second insulating layer, which is located on the side of the first insulating layer away from the substrate, and the second insulating layer extends from the display area to the non-display area; the edge of the second insulating layer is aligned with the edge of the first insulating layer, or the distance from the edge of the second insulating layer to the edge of the display area is less than the distance from the edge of the first insulating layer to the edge of the display area; preferably, the material of the first insulating layer and / or the second insulating layer includes an inorganic material; preferably, the touch structure also includes a first touch metal layer and a second touch metal layer, the first touch metal layer is located between the first insulating layer and the second insulating layer, and the second touch metal layer is located on the side of the second insulating layer away from the substrate; preferably, the first touch metal layer includes multiple first connecting parts, the second touch metal layer includes multiple first touch electrode blocks, multiple second touch electrode blocks and multiple second connecting parts, the second insulating layer is provided with a first via, two adjacent first touch electrode blocks are electrically connected to the first connecting part through the first via, and two adjacent second touch electrode blocks are electrically connected through the second connecting part.

[0008] In combination with the first aspect, the display panel also includes multiple touch lines, which are located on the side of the pixel definition layer close to the substrate and in the non-display area; the orthographic projection of the touch lines on the substrate is located within the range of the orthographic projection of the first insulating layer on the substrate, and the orthographic projection of the touch lines on the substrate does not overlap with the orthographic projection of the first packaging layer on the substrate.

[0009] In combination with the first aspect, the touch structure also includes a second touch metal layer, the second touch metal layer includes multiple first touch electrode blocks, multiple second touch electrode blocks, multiple first lead lines and multiple second lead lines, the first lead lines are connected to the first touch electrode blocks, and the second lead lines are connected to the second touch electrode blocks; the first insulating layer is provided with a second via, and the pixel definition layer is provided with a third via, the orthographic projection of the third via on the substrate at least partially overlaps with the orthographic projection of the second via on the substrate, and the first lead line and / or the second lead line are electrically connected to the touch trace through the second via and the third via; preferably, the display panel also includes a third insulating layer, the third insulating layer is located on the side of the touch trace layer away from the substrate, the third insulating layer is provided with a fourth via, the orthographic projection of the fourth via on the substrate at least partially overlaps with the orthographic projection of the second via or the third via on the substrate, and the first lead line and / or the second lead line are electrically connected to the touch trace through the second via, the third via and the fourth via.

[0010] In combination with the first aspect, the display panel further includes at least one dam, which is located between the substrate and the pixel definition layer and is located in the non-display area. The dam is arranged around the display area, and the pixel definition layer is in contact with and covers the dam. Preferably, the orthographic projection of the first insulating layer on the substrate covers the orthographic projection of the dam on the substrate. The orthographic projection of the first encapsulation layer on the substrate covers the orthographic projection of the dam on the substrate. Preferably, the display panel further includes a plurality of touch traces, and the orthographic projection of the touch traces on the substrate is located on the side of the orthographic projection of the dam on the substrate away from the display area. Preferably, the display panel further includes a gate drive circuit, which is located on the side of the pixel definition layer close to the substrate and in the non-display area, and the orthographic projection of the gate drive circuit on the substrate is located on the side of the orthographic projection of the dam on the substrate close to the display area. Preferably The number of dams is two, and the dams include a first dam and a second dam arranged at intervals, the first dam surrounds the display area, and the second dam surrounds the first dam; preferably, the display panel also includes a third insulating layer, and the third insulating layer is located on the side of the pixel definition layer close to the substrate; the dam and the third insulating layer are prepared in the same layer; preferably, the material of the dam is the same as the material of the third insulating layer; preferably, the display panel also includes a fourth insulating layer, and the fourth insulating layer is located on the side of the third insulating layer close to the substrate; the dam includes a first sub-portion and a second sub-portion stacked in sequence along a direction away from the substrate, the first sub-portion and the fourth insulating layer are prepared in the same layer, and the second sub-portion and the third insulating layer are prepared in the same layer; preferably, the material of the first sub-portion is the same as the material of the fourth insulating layer, and the material of the second sub-portion is the same as the material of the third insulating layer.

[0011] In combination with the first aspect, the display panel also includes an isolation structure, which is located on the side of the pixel definition layer away from the substrate, and the isolation structure encloses a plurality of isolation openings; the display panel also includes a plurality of light-emitting devices, and the light-emitting devices are located in the isolation openings; preferably, the isolation structure includes a first part and a second part stacked in sequence along a direction away from the substrate, and the orthographic projection of the second part on the substrate covers the orthographic projection of the first part on the substrate; preferably, the isolation structure also includes a third part, which is located on the side of the first part close to the substrate, and the orthographic projection of the first part on the substrate is located within the orthographic projection of the third part on the substrate; preferably, the material of the first part includes a conductive material, and the light-emitting device includes a first electrode, and the first electrode and the first part are overlapped, or the first electrode is in contact with the side wall of the first part; preferably, the light-emitting device also includes a second electrode and a light-emitting functional layer, and the second electrode, the light-emitting functional layer and the first electrode are stacked in sequence along a direction away from the substrate.

[0012] In a second aspect, an embodiment of the present application further provides a display panel, which has a display area and a non-display area surrounding at least part of the display area, the display panel comprising: a substrate; a pixel definition layer located on one side of the substrate, the pixel definition layer extending from the display area to the non-display area; an encapsulation structure located on the side of the pixel definition layer facing away from the substrate, the encapsulation structure comprising a first encapsulation layer; a touch structure located on the side of the encapsulation structure facing away from the substrate, the touch structure comprising a first insulating layer; wherein both the first encapsulation layer and the first insulating layer extend from the display area to the non-display area, and in the non-display area, the orthographic projection of the first insulating layer on the substrate covers the orthographic projection of the first encapsulation layer on the substrate, and part of the first insulating layer is in contact with the pixel definition layer.

[0013] In a third aspect, an embodiment of the present application also provides a method for preparing a display panel, wherein the display panel has a display area and a non-display area surrounding at least part of the display area, and the preparation method includes: preparing a pixel definition layer on a substrate, wherein the pixel definition layer extends from the display area to the non-display area; preparing a first encapsulation layer on a side of the pixel definition layer facing away from the substrate; preparing a touch structure on a side of the first encapsulation layer facing away from the substrate, wherein the touch structure includes a first insulating layer; wherein both the first encapsulation layer and the first insulating layer extend from the display area to the non-display area, and an edge of the first insulating layer exceeds an edge of the first encapsulation layer and contacts the pixel definition layer.

[0014] In combination with the third aspect, a touch structure is prepared on the side of the first packaging layer facing away from the substrate, including: preparing a first film layer on the side of the first packaging layer facing away from the substrate; preparing a first metal layer on the side of the first film layer facing away from the substrate, and patterning the first metal layer to obtain a first touch metal layer; preparing a second film layer on the side of the first touch metal layer facing away from the substrate, and patterning the first film layer and the second film layer respectively to obtain a first insulating layer and a second insulating layer; preparing a second metal layer on the side of the second insulating layer facing away from the substrate, and patterning the second metal layer to obtain a second touch metal layer. The first insulating layer, the first touch metal layer, the second insulating layer and the second touch metal layer constitute the touch structure.

[0015] In combination with the third aspect, before the step of preparing a pixel definition layer on the substrate, the method also includes: forming a fourth film layer on the substrate, patterning the fourth film layer to obtain a fourth insulating layer and a first sub-portion of the dam; forming a third film layer on the side of the fourth insulating layer facing away from the substrate, patterning the third film layer to obtain a third insulating layer and a second sub-portion of the dam; the first sub-portion and the second sub-portion constitute a dam, and the dam is located in the non-display area; preferably, before the step of forming the third film layer on the side of the fourth insulating layer facing away from the substrate, the method also includes: preparing a third metal layer on the side of the fourth insulating layer facing away from the substrate, patterning the third metal layer to obtain a plurality of touch lines, the touch lines are located in the non-display area, and the orthographic projection of the touch lines on the substrate is located on the side of the orthographic projection of the dam on the substrate facing away from the display area.

[0016] In combination with the third aspect, before the step of preparing a pixel definition layer on the substrate, the method also includes: sequentially forming a fourth insulating layer and a third insulating layer on the substrate, patterning the third insulating layer and the fourth insulating layer to obtain a dam, and the dam is located in the non-display area; preferably, after forming the fourth insulating layer and before forming the third insulating layer, the method also includes: preparing a third metal layer on the side of the fourth insulating layer away from the substrate, patterning the third metal layer to obtain a plurality of touch lines, the touch lines are located in the non-display area, and the orthographic projection of the touch lines on the substrate is located on the side of the orthographic projection of the dam on the substrate away from the display area.

[0017] In combination with the third aspect, before the step of preparing a pixel definition layer on the substrate, the method further includes: preparing a second electrode layer on the substrate, the second electrode layer including a plurality of second electrodes, the pixel definition layer enclosing a plurality of pixel openings, and the pixel openings exposing portions of the second electrodes; after the step of preparing the pixel definition layer on the substrate, the method further includes: preparing an isolation structure on the side of the pixel definition layer facing away from the substrate, the isolation structure enclosing a plurality of isolation openings, and the isolation openings and the pixel openings being connected; preparing a light-emitting layer, a first electrode layer, and a second encapsulation layer in sequence on the side of the pixel definition layer facing away from the substrate, the second electrode layer, the light-emitting layer, and the first electrode layer forming a plurality of light-emitting devices, the light-emitting devices being located at least within the pixel openings, the second encapsulation layer including a plurality of spaced encapsulation units, the encapsulation units corresponding one-to-one to the pixel openings, the orthographic projections of the encapsulation units on the substrate covering the orthographic projections of the light-emitting devices on the substrate; preferably, after the step of preparing the light-emitting layer, the first electrode layer, and the second encapsulation layer in sequence on the side of the pixel definition layer facing away from the substrate, the method further includes: preparing a third encapsulation layer on the side of the second encapsulation layer facing away from the substrate, the orthographic projection of the third encapsulation layer on the substrate covering the orthographic projection of the second encapsulation layer on the substrate, and the third encapsulation layer ending at the side of the dam close to the display area.

[0018] In a fourth aspect, an embodiment of the present application further provides a display device, comprising the above-mentioned display panel, or a display panel prepared by the above-mentioned preparation method.

[0019] Through the above technical solution, the first insulating layer covers the surface of the first encapsulation layer, protecting the first encapsulation layer from damage. Furthermore, even if the first encapsulation layer is damaged, the first insulating layer can still provide encapsulation protection. Secondly, the edge of the first insulating layer contacts the pixel definition layer, creating an encapsulation boundary between the first insulating layer and the pixel definition layer, and between the pixel definition layer and the first encapsulation layer. Encapsulation failure will only occur if both encapsulation boundaries simultaneously fail, thus significantly improving encapsulation reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 3 is a schematic diagram of a top view of a display panel provided in one embodiment of the present application.

[0021] Figure 2 2 is a schematic diagram of the cross-sectional structure of a display panel provided in one embodiment of the present application.

[0022] Figure 3 3 is a schematic diagram of the cross-sectional structure of a display panel provided in another embodiment of the present application.

[0023] Figure 4 3 is a schematic diagram of a top view of a display panel provided in another embodiment of the present application.

[0024] Figure 5 yes Figure 3 Magnified view of area N in .

[0025] Figure 6 3 is a schematic diagram of the cross-sectional structure of a display panel provided in another embodiment of the present application.

[0026] Figure 7 3 is a schematic diagram of the cross-sectional structure of a display panel provided in another embodiment of the present application.

[0027] Figure 8 3 is a schematic diagram of the cross-sectional structure of a display panel provided in another embodiment of the present application.

[0028] Figure 9 3 is a schematic diagram of the cross-sectional structure of a display panel provided in another embodiment of the present application.

[0029] Figure 10 1 is a flow chart of a method for manufacturing a display panel provided in one embodiment of the present application.

[0030] Figure 11 2 is a schematic structural diagram of a display device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] When preparing a display panel, the functional film layer in the light-emitting device needs to be formed by evaporation. When using a fine metal mask (FMM) to evaporate the functional film layer, multiple alignments are required. In order to solve the position offset caused by alignment errors, sufficient space needs to be reserved between different light-emitting devices. This makes the aperture ratio of the light-emitting device low, making it difficult to increase the pixel density of the display panel.

[0033] In this application, there is no need to use a mask. A full-surface evaporation process is used to separately evaporate and encapsulate light-emitting devices of different colors (also called different sub-pixels). There is no need to consider the alignment accuracy during evaporation. Therefore, the gap between light-emitting devices can be designed to be smaller, thereby increasing the pixel density. The inventors found that after separately encapsulating light-emitting devices of different colors, the first layer of inorganic encapsulation film layer only exists in the display area, and there is only one layer of inorganic encapsulation film layer in the non-display area. When the inorganic encapsulation film layer is damaged, water vapor will invade the organic encapsulation film layer, and then the water vapor will continue to invade the display area, causing dark spots in the display area.

[0034] In response to the above technical problems, in a first aspect, embodiments of the present application provide a display panel. The display panel comprises a display area and a non-display area surrounding at least a portion of the display area. The display panel includes a substrate; a pixel definition layer located on one side of the substrate, the pixel definition layer extending from the display area to the non-display area; an encapsulation structure located on a side of the pixel definition layer facing away from the substrate, the encapsulation structure comprising a first encapsulation layer; and a touch structure located on a side of the encapsulation structure facing away from the substrate, the touch structure comprising a first insulating layer. Both the first encapsulation layer and the first insulating layer extend from the display area to the non-display area, and the edges of the first insulating layer extend beyond the edges of the first encapsulation layer and contact the pixel definition layer. In embodiments of the present application, the first insulating layer covers the surface of the first encapsulation layer, protecting the first encapsulation layer from damage. Furthermore, even if the first encapsulation layer is damaged, the first insulating layer can still provide encapsulation protection. In a second aspect, the edge of the first insulating layer contacts the pixel definition layer, creating an encapsulation boundary between the first insulating layer and the pixel definition layer, and between the pixel definition layer and the first encapsulation layer. Encapsulation failure only occurs if both encapsulation boundaries fail simultaneously, thereby improving encapsulation reliability.

[0035] Figure 1 3 is a schematic diagram of a top view of a display panel provided in one embodiment of the present application. Figure 2 : is a schematic diagram of a cross-sectional structure of a display panel provided in one embodiment of the present application. Specifically, Figure 2 yes Figure 1 The display panel shown in FIG. 1 is an exemplary cross-sectional structural diagram along line B1B2. Figure 1 and Figure 2 As shown, the display panel has a display area AA and a non-display area NA surrounding at least a portion of the display area AA. The display panel includes a substrate 10, a pixel definition layer 20, an encapsulation structure 50 and a touch structure 60.

[0036] In an embodiment of the present application, the substrate 10 includes a rigid substrate, such as a glass substrate; or the substrate 10 includes a flexible substrate, such as polyimide (PI), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), etc.

[0037] The pixel definition layer 20 is located on one side of the substrate 10 and extends from the display area AA to the non-display area NA. The pixel definition layer 20 encloses a plurality of pixel openings 201 in the display area AA. The display panel also includes a plurality of light-emitting devices 30, at least partially located within the pixel openings 201. In the embodiment of the present application, the pixel definition layer 20 is made of an inorganic material, such as an inorganic insulating material.

[0038] In an embodiment of the present application, the light-emitting device 30 includes a second electrode 310, a light-emitting functional layer 320, and a first electrode 330, stacked in sequence away from the substrate 10. Specifically, the second electrode 310 is located between the substrate 10 and the pixel definition layer 20, with the pixel opening 201 exposing a portion of the second electrode 310. The light-emitting functional layer 320 covers at least the bottom and side walls of the pixel opening 201. For example, the light-emitting functional layer 320 covers the bottom and side walls of the pixel opening 201 and extends to cover a portion of the surface of the pixel definition layer 20 facing away from the substrate 10. The first electrode 330 covers the light-emitting functional layer 320. In an embodiment of the present application, the second electrode 310 is an anode and the first electrode 330 is a cathode; alternatively, the second electrode 310 is a cathode and the first electrode 330 is an anode. The light-emitting functional layer 320 includes a first injection layer, a first transport layer, a first blocking layer, a light-emitting layer, a second blocking layer, a second transport layer, and a second injection layer, stacked in sequence. Optionally, when the second electrode 310 is an anode and the first electrode 330 is a cathode, the light-emitting functional layer 320 includes a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer stacked in sequence.

[0039] The display panel also includes an isolation structure 40, which is located on the side of the pixel definition layer 20 facing away from the substrate 10. The isolation structure 40 encloses a plurality of isolation openings 401, and the isolation openings 401 are connected to the pixel openings 201, and the light-emitting device 30 is at least partially located within the isolation openings 401. Optionally, the isolation structure 40 includes a first portion 410 and a second portion 420 stacked in sequence in a direction away from the substrate 10, and the orthographic projection of the second portion 420 on the substrate 10 covers the orthographic projection of the first portion 410 on the substrate 10. Optionally, the material of the first portion 410 includes a conductive material, and the first portion 410 overlaps the first electrode 330, or the sidewall of the first portion 410 contacts the first electrode 330, as shown in FIG. Figure 2 As shown, in this way, the entire surface of the first electrode 330 can be turned on, avoiding voltage drop and causing uneven brightness of the display panel. Optionally, the materials of the first part 410 and the second part 420 are both conductive materials. For example, the material of the first part 410 includes aluminum, and the material of the second part 420 includes titanium. In other embodiments, the isolation structure also includes a third part 430, and the third part 430 is located on the side of the first part 410 close to the substrate 10, and the orthographic projection of the first part 410 on the substrate 10 is located within the orthographic projection of the third part 430 on the substrate 10. Optionally, the material of the third part 430 includes a conductive material. The first electrode 330 can overlap with the first part 410 or the third part 430, or the first electrode 330 can contact the side wall of the first part 410 or the side wall of the third part 430. Optionally, the material of the first part 410 includes aluminum.

[0040] The encapsulation structure 50 is located on the side of the pixel definition layer 20 facing away from the substrate 10. Along the direction away from the substrate 10, the encapsulation structure 50 includes a second encapsulation layer 520, a third encapsulation layer 530, and a first encapsulation layer 510 stacked in sequence. The materials of the first encapsulation layer 510 and the second encapsulation layer 520 include inorganic materials, while the material of the third encapsulation layer 530 includes organic materials. The first encapsulation layer 510 extends from the display area AA to the non-display area NA. In the non-display area NA, the first encapsulation layer 510 and the pixel definition layer 20 are in contact. The orthographic projection of the third encapsulation layer 530 on the substrate 10 covers the orthographic projection of the second encapsulation layer 520 on the substrate 10.

[0041] In an embodiment of the present application, the second encapsulation layer 520 is located in the display area AA, and the second encapsulation layer 520 includes a plurality of encapsulation units 521 arranged at intervals, and the encapsulation units 521 correspond one-to-one to the pixel openings 201. The orthographic projection of the encapsulation unit 521 on the substrate 10 covers the orthographic projection of the light-emitting device 30 on the substrate 10.

[0042] Continue to refer Figure 2 The display panel further includes a dam 80, which is located in the non-display area NA and between the substrate 10 and the pixel definition layer 20. The dam 80 is arranged around the display area AA. The pixel definition layer 20 is in contact with the dam 80 and covers the dam 80. In an embodiment of the present application, the third encapsulation layer 530 extends from the display area AA to the non-display area NA and terminates at the side of the dam 80 close to the display area AA. The orthographic projection of the first encapsulation layer 510 on the substrate 10 covers the orthographic projection of the dam 80 on the substrate 10. Optionally, the number of dams 80 is two, and the dam 80 includes a first dam 801 and a second dam 802 arranged at intervals. The first dam 801 surrounds the display area AA, and the second dam 802 surrounds the first dam 801. By providing two dams 80, it is possible to prevent the material of the third encapsulation layer 530 from overflowing the dam 80 and affecting the encapsulation performance.

[0043] like Figure 2 As shown, the display panel further includes a third insulating layer 70, which is located on the side of the pixel definition layer 20 close to the substrate 10. The third insulating layer 70 and the dam 80 are formed in the same layer. For example, holes are dug in the third insulating layer 70 to form the dam 80. Optionally, the material of the third insulating layer 70 includes an organic material.

[0044] The touch structure 60 is located on the side of the package structure 50 away from the substrate 10. The touch structure 60 includes a first insulating layer 610. The first insulating layer 610 extends from the display area AA to the non-display area NA. The edge of the first insulating layer 610 exceeds the edge of the first package layer 510 and contacts the pixel definition layer 20. Figure 2As shown, the orthographic projection of the first insulating layer 610 on the substrate 10 covers the orthographic projection of the dam 80 on the substrate 10. The material of the first insulating layer 610 includes an inorganic material. In the embodiment of the present application, the edge of the first insulating layer 610 extends beyond the edge of the first encapsulation layer 510 and contacts the pixel definition layer 20. A first encapsulation boundary is formed between the first insulating layer 610 and the pixel definition layer 20, and a second encapsulation boundary is formed between the first encapsulation layer 510 and the pixel definition layer 20. This can significantly improve encapsulation performance.

[0045] Figure 3 : is a schematic diagram of a cross-sectional structure of a display panel provided by another embodiment of the present application. Specifically, Figure 3 yes Figure 1 The figure shows another exemplary cross-sectional structure diagram of the display panel along line B1B2. Figure 4 3 is a schematic diagram of a top view of a display panel provided in another embodiment of the present application.

[0046] Figure 3 The display panel shown is Figure 2 The difference between the display panels shown is that the touch structure 60 further includes a second insulating layer 620. The second insulating layer 620 is located on the side of the first insulating layer 610 facing away from the substrate 10. The second insulating layer 620 extends from the display area AA to the non-display area NA. The distance between the edge of the second insulating layer 620 and the edge of the display area AA is less than the distance between the edge of the first insulating layer 610 and the edge of the display area AA. That is, in the non-display area NA, the second insulating layer 620 does not completely cover the first insulating layer 610. In the embodiment of the present application, the material of the second insulating layer 620 includes an inorganic material.

[0047] like Figure 3 and Figure 4 As shown, the touch structure 60 further includes a first touch metal layer 630 and a second touch metal layer 640. The first touch metal layer 630 is located between the first insulating layer 610 and the second insulating layer 620. The second touch metal layer 640 is located on the side of the second insulating layer 620 facing away from the substrate 10. Figure 4 As shown, the first touch metal layer 630 includes a plurality of first connecting portions 631, the second touch metal layer 640 includes a plurality of first touch electrode blocks 641, a plurality of second touch electrode blocks 642, and a plurality of second connecting portions 643. The second insulating layer 620 is provided with a first via 621. Two adjacent first touch electrode blocks 641 are electrically connected to the first connecting portion 631 through the first via 621, and two adjacent second touch electrode blocks 642 are electrically connected through the second connecting portion 643. It will be understood that in other embodiments, the first touch metal layer 630 may include a plurality of first touch electrode blocks, a plurality of second touch electrode blocks, and a plurality of second connecting portions, and the second touch metal layer 640 may include a plurality of first connecting portions.

[0048] Alternatively, as Figure 3 and Figure 4 As shown, the display panel also includes a plurality of touch traces 90, which are located on the side of the pixel definition layer 20 close to the substrate 10 and in the non-display area NA. The orthographic projection of the touch trace 90 on the substrate 10 is located on the side of the orthographic projection of the dam 80 on the substrate 10 that faces away from the display area AA. The orthographic projection of the touch trace 90 on the substrate 10 is located within the range of the orthographic projection of the first insulating layer 610 on the substrate 10, and the orthographic projection of the touch trace 90 on the substrate 10 does not overlap with the orthographic projection of the first encapsulation layer 510 on the substrate 10. In other words, the touch trace 90 is located on the side of the edge of the first encapsulation layer 510 away from the display area AA. In this embodiment of the present application, there is no need to drill holes in the first encapsulation layer 510, which can improve the encapsulation performance of the first encapsulation layer 510.

[0049] Optionally, the second touch metal layer 640 further includes a plurality of first lead lines 644 and a plurality of second lead lines 645. The first lead lines 644 are connected to the first touch electrode blocks 641, and the second lead lines 645 are connected to the second touch electrode blocks 642. The first lead lines 644 and the second lead lines 645 extend from the display area AA to the non-display area NA and are electrically connected to the touch traces 90. Figure 5 yes Figure 3 An enlarged view of region N in FIG. Figure 5 As shown, the first insulating layer 610 is provided with a second via 611, and the pixel definition layer 20 is provided with a third via 211. The orthographic projection of the third via 211 on the substrate 10 at least partially overlaps with the orthographic projection of the second via 611 on the substrate 10. The third insulating layer 70 is provided with a fourth via 711. The orthographic projection of the fourth via 711 on the substrate 10 at least partially overlaps with the orthographic projection of the second via 611 or the third via 211 on the substrate 10. Optionally, the first lead 644 is electrically connected to the touch trace 90 through the second via 611, the third via 211, and the fourth via 711. Figure 3 and Figure 5 FIG. 5 only shows a connection diagram between the first lead wire 644 and the touch line 90 . It can be understood that the second lead wire 645 can also be electrically connected to the touch line 90 through the second via 611 , the third via 211 and the fourth via 711 .

[0050] Figure 6 : is a schematic diagram of a cross-sectional structure of a display panel provided by another embodiment of the present application. Specifically, Figure 6 yes Figure 1 The figure shows another exemplary cross-sectional structure diagram of the display panel along line B1B2. Figure 6 The display panel shown is Figure 3The difference between the display panel shown is that the edge of the second insulating layer 620 is aligned with the edge of the first insulating layer 610. In this way, the second insulating layer 620 can be used to provide protection for the first insulating layer 610, further improving the packaging effect. In this case, a fifth via hole (not shown in the figure) needs to be opened on the second insulating layer 620, so that the first lead 644 and / or the second lead 645 pass through the fifth via hole, the second via hole 611, the third via hole 211 and the fourth via hole 711 in sequence to be electrically connected to the touch trace 90. It can be understood that the touch structure also includes a protective layer (not shown in the figure), which is located on the side of the second touch metal layer 640 facing away from the substrate 10. The protective layer is used to protect the first touch electrode block 641, the second touch electrode block 642, the second connecting portion 643, the first lead 644 and / or the second lead 645, etc. Optionally, the material of the protective layer includes an organic material.

[0051] Figure 7 : is a schematic diagram of a cross-sectional structure of a display panel provided by another embodiment of the present application. Specifically, Figure 7 yes Figure 1 The figure shows another exemplary cross-sectional structure diagram of the display panel along line B1B2. Figure 7 The display panel shown is Figure 2 The difference between the display panel shown is that the display panel also includes a fourth insulating layer 100, and the fourth insulating layer 400 is located on the side of the third insulating layer 70 close to the substrate 10. The dam 80 includes a first sub-portion 810 and a second sub-portion 820 stacked in sequence in a direction away from the substrate 10. The first sub-portion 810 and the fourth insulating layer 100 are prepared in the same layer, and the second sub-portion 820 and the third insulating layer 70 are prepared in the same layer. Optionally, the material of the first sub-portion 810 is the same as that of the fourth insulating layer 100, and the material of the second sub-portion 820 is the same as that of the third insulating layer 70. In the embodiment of the present application, when preparing the fourth insulating layer 100, a first hole is dug to form the first sub-portion 810, and when preparing the third insulating layer 70, a second groove is dug to form the second sub-portion 820. The two holes can be formed in the patterning process of the fourth insulating layer 100 and the third insulating layer 70 respectively, without adding additional preparation steps. However, when preparing the third insulating layer 70, impurities are likely to remain at the position of the hole in the previous step. In order to avoid impurity residues, optionally, in other embodiments, after preparing the fourth insulating layer 100 and the third insulating layer 70, a hole can be dug in one step to form a dam, forming a structure such as Figure 8 The dam structure shown.

[0052] Figure 9 : is a schematic diagram of a cross-sectional structure of a display panel provided by another embodiment of the present application. Specifically, Figure 9 yes Figure 1 The figure shows an exemplary cross-sectional structure diagram of a display panel along line B1B2. Figure 9The display panel shown is Figure 2 The difference of the display panel shown is that the display panel also includes a gate driving circuit 110, which is located on the side of the pixel definition layer 20 close to the substrate 10 and in the non-display area NA, and the orthographic projection of the gate driving circuit 110 on the substrate 10 is located on the side of the orthographic projection of the dam 80 on the substrate 10 close to the display area AA.

[0053] In a second aspect, embodiments of the present application further provide a display panel having a display area and a non-display area surrounding at least a portion of the display area, the display panel comprising: a substrate; a pixel definition layer located on one side of the substrate, the pixel definition layer extending from the display area to the non-display area; an encapsulation structure located on a side of the pixel definition layer facing away from the substrate, the encapsulation structure comprising a first encapsulation layer; and a touch structure located on a side of the encapsulation layer facing away from the substrate, the touch structure comprising a first insulating layer; wherein both the first encapsulation layer and the first insulating layer extend from the display area to the non-display area, and in the non-display area, the orthographic projection of the first insulating layer on the substrate overlaps the orthographic projection of the first encapsulation layer on the substrate, and a portion of the first insulating layer contacts the pixel definition layer. In embodiments of the present application, the contact between the first insulating layer and the pixel definition layer constitutes a first encapsulation boundary, and the contact between the first encapsulation layer and the pixel definition layer constitutes a second encapsulation boundary. By providing two layers of encapsulation boundaries, the encapsulation effect of the display panel is improved.

[0054] In a third aspect, an embodiment of the present application provides a method for preparing a display panel, which is used to prepare the above-mentioned display panel.

[0055] Figure 10 FIG. 1 is a flow chart of a method for manufacturing a display panel according to an embodiment of the present application. Figure 10 As shown, the method includes the following steps.

[0056] Step S1010: preparing a pixel definition layer on a substrate.

[0057] In the embodiment of the present application, the pixel definition layer extends from the display area to the non-display area.

[0058] In an embodiment of the present application, before step S1010, the method further includes: forming a fourth film layer on the substrate, patterning the fourth film layer to obtain a fourth insulating layer and a first sub-portion of the dam; forming a third film layer on the side of the fourth insulating layer facing away from the substrate, patterning the third film layer to obtain the third film layer and a second sub-portion of the dam, the first sub-portion and the second sub-portion constituting the dam, wherein the dam is located in the non-display area. Optionally, before the step of forming the third film layer on the side of the fourth insulating layer facing away from the substrate, the method further includes: preparing a third metal layer on the side of the fourth insulating layer facing away from the substrate, patterning the third metal layer to obtain a plurality of touch traces, the touch traces being located in the non-display area, and the orthographic projection of the touch traces on the substrate being located on the side of the orthographic projection of the dam on the substrate facing away from the display area. In an embodiment of the present application, the dam is prepared by two-step patterning (i.e., digging holes), eliminating the need for a new preparation process and simplifying the process steps.

[0059] In other embodiments, the dam can also be obtained by a one-step patterning process. Optionally, before step S1010, the method includes sequentially forming a fourth insulating layer and a third insulating layer on the substrate, patterning the third insulating layer and the fourth insulating layer to obtain a dam, and the dam is located in the non-display area. In this method, the fourth insulating layer and the third insulating layer are first formed, and then a patterning process is added to form the dam. In this way, impurity deposition can be avoided and the reliability of the display panel can be improved. In this embodiment, after forming the fourth insulating layer and before forming the third insulating layer, the method further includes: preparing a third metal layer on the side of the fourth insulating layer facing away from the substrate, patterning the third metal layer to obtain a plurality of touch lines.

[0060] Optionally, before the step of preparing the pixel definition layer on the substrate, the method further includes: preparing a second electrode layer on the substrate. The second electrode layer includes a plurality of second electrodes, the pixel definition layer encloses a plurality of pixel openings, and the pixel openings expose a portion of the second electrodes. After the step of preparing the pixel definition layer on the substrate, the method further includes: preparing an isolation structure on the side of the pixel definition layer facing away from the substrate, the isolation structure enclosing a plurality of isolation openings, and the isolation openings and the pixel openings are connected; and sequentially preparing a light-emitting layer, a first electrode layer, and a second encapsulation layer on the side of the pixel definition layer facing away from the substrate. The second electrode layer, the light-emitting layer, and the first electrode layer form a plurality of light-emitting devices, and the light-emitting devices are at least located within the pixel openings. The second encapsulation layer includes a plurality of encapsulation units arranged at intervals, the encapsulation units corresponding one-to-one to the pixel openings, and the orthographic projections of the encapsulation units on the substrate cover the orthographic projections of the light-emitting devices on the substrate.

[0061] Optionally, after the steps of sequentially preparing the light-emitting layer, the first electrode layer and the second encapsulation layer, the method further includes: preparing a third encapsulation layer on the side of the second encapsulation layer facing away from the substrate, the orthographic projection of the third encapsulation layer on the substrate covers the orthographic projection of the second encapsulation layer on the substrate, and the third encapsulation layer terminates at the side of the dam close to the display area.

[0062] Step S1020 , preparing a first encapsulation layer on the side of the pixel definition layer facing away from the substrate.

[0063] Optionally, after forming the third encapsulation layer, the method further includes forming a first encapsulation layer on a side of the pixel definition layer facing away from the substrate. The first encapsulation layer, the second encapsulation layer, and the third encapsulation layer constitute an encapsulation structure. The first encapsulation layer extends from the display area to the non-display area, and in the non-display area, the first encapsulation layer contacts the pixel definition layer.

[0064] Step S1030 , preparing a touch structure on a side of the first packaging layer facing away from the substrate.

[0065] In the embodiment of the present application, the first insulating layer extends from the display area to the non-display area, and an edge of the first insulating layer exceeds an edge of the first encapsulation layer and contacts the pixel definition layer.

[0066] Optionally, step S1030 specifically includes: forming a first film layer on a side of the first encapsulation layer facing away from the substrate; forming a first metal layer on a side of the first film layer facing away from the substrate, and patterning the first metal layer to obtain a first touch metal layer; forming a second film layer on a side of the first touch metal layer facing away from the substrate, and patterning the first and second film layers to obtain a first insulating layer and a second insulating layer, respectively; forming a second metal layer on a side of the second insulating layer facing away from the substrate, and patterning the second metal layer to obtain a second touch metal layer. The first insulating layer, the first touch metal layer, the second insulating layer, and the second touch metal layer constitute a touch structure. In this embodiment of the present application, the patterning process includes etching, such as dry etching or laser etching. In this embodiment of the present application, the first touch metal layer includes a plurality of first connecting portions; the second touch metal layer includes a plurality of second connecting portions, a first touch electrode block, a second touch electrode block, and the like. In this embodiment of the present application, forming the first and second insulating layers through a one-step patterning process can simplify the manufacturing process and improve manufacturing efficiency. In other embodiments, the first film layer and the second film layer may be patterned separately to obtain the first insulating layer and the second insulating layer respectively. In this case, the edge of the first insulating layer and the edge of the second insulating layer may not be aligned.

[0067] In a fourth aspect, an embodiment of the present application provides a display device, which includes the display panel described in the above embodiment.

[0068] Figure 11Schematic diagram of the structure of a display device provided by an embodiment of the present application. Figure 11 As shown, the display device 1100 is a product with an image display function. For example, the display device 1100 can be used to display static images, such as pictures or photos. The display device 1100 can also be used to display dynamic images, such as videos.

[0069] The display device 1100 can be a laptop computer, a mobile phone, a handheld or portable computer, a camera, a video camera, a vehicle-mounted smart central control screen, a calculator, a smart watch, a GPS navigator, an electronic photo, an electronic billboard or sign, a projector, etc.

[0070] The display device 1100 includes a display panel provided by any of the above embodiments, which may be an organic light emitting diode display panel or a quantum dot electroluminescent display panel.

[0071] In addition, the display device 1100 may also have functions such as taking photos, recording videos, fingerprint recognition, and face recognition. Accordingly, the display device 1100 also includes at least one functional module for implementing the above functions, such as an under-screen camera, an under-screen fingerprint recognition sensor, etc.

[0072] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

[0073] The block diagrams of the devices, devices, equipment, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, devices, equipment, and systems can be connected, arranged, or configured in any manner. Words such as "include," "comprise," "have," and the like are open-ended words, meaning "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0074] It should also be noted that in the apparatus, device, and method of the present application, each component or each step can be decomposed and / or recombined, and such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0075] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0076] The above description has been provided for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A display panel, characterized in that: The display panel has a display area and a non-display area surrounding at least a portion of the display area, and comprises: substrate; A pixel definition layer, located on one side of the substrate, the pixel definition layer extending from the display area to the non-display area; A packaging structure, located on a side of the pixel definition layer away from the substrate, the packaging structure comprising a first packaging layer; A touch control structure, located on a side of the packaging structure away from the substrate, the touch control structure comprising a first insulating layer; The first encapsulation layer and the first insulating layer both extend from the display area to the non-display area, and an edge of the first insulating layer exceeds an edge of the first encapsulation layer and contacts the pixel definition layer.

2. The display panel according to claim 1, characterized in that: In the non-display area, the first encapsulation layer is in contact with the pixel definition layer; Preferably, the encapsulation structure further comprises a second encapsulation layer, the second encapsulation layer is located on a side of the first encapsulation layer close to the substrate, and the second encapsulation layer is located in the display area; Preferably, the pixel definition layer encloses a plurality of pixel openings in the display area; the display panel further comprises a plurality of light emitting devices, at least part of which is located in the pixel openings; Preferably, the second encapsulation layer comprises a plurality of encapsulation units arranged at intervals, the encapsulation units correspond to the pixel openings one by one, and the orthographic projections of the encapsulation units on the substrate cover the orthographic projections of the light-emitting devices on the substrate; Preferably, the display panel further comprises a dam, the dam is located in the non-display area and between the substrate and the pixel definition layer, and the dam is arranged around the display area; the encapsulation structure further comprises a third encapsulation layer, the third encapsulation layer is located between the first encapsulation layer and the second encapsulation layer, the orthographic projection of the third encapsulation layer on the substrate covers the orthographic projection of the second encapsulation layer on the substrate, and the third encapsulation layer extends from the display area to the non-display area and ends at a side of the dam close to the display area; Preferably, the materials of the first encapsulation layer and the second encapsulation layer include inorganic materials, and the material of the third encapsulation layer includes organic materials.

3. The display panel according to claim 1, characterized in that: The touch control structure further includes a second insulating layer, which is located on a side of the first insulating layer away from the substrate, and the second insulating layer extends from the display area to the non-display area; an edge of the second insulating layer is aligned with an edge of the first insulating layer, or a distance from an edge of the second insulating layer to an edge of the display area is less than a distance from an edge of the first insulating layer to an edge of the display area; Preferably, the material of the first insulating layer and / or the second insulating layer comprises an inorganic material; Preferably, the touch control structure further includes a first touch control metal layer and a second touch control metal layer, the first touch control metal layer is located between the first insulating layer and the second insulating layer, and the second touch control metal layer is located on a side of the second insulating layer away from the substrate; Preferably, the first touch metal layer includes multiple first connecting parts, the second touch metal layer includes multiple first touch electrode blocks, multiple second touch electrode blocks and multiple second connecting parts, the second insulating layer is provided with a first via hole, two adjacent first touch electrode blocks are electrically connected to the first connecting part through the first via hole, and two adjacent second touch electrode blocks are electrically connected through the second connecting part.

4. The display panel according to claim 1, characterized in that: The display panel further comprises a plurality of touch lines, wherein the touch lines are located on a side of the pixel definition layer close to the substrate and located in the non-display area; The orthographic projection of the touch line on the substrate is located within the range of the orthographic projection of the first insulating layer on the substrate, and the orthographic projection of the touch line on the substrate does not overlap with the orthographic projection of the first packaging layer on the substrate.

5. The display panel according to claim 4, characterized in that: The touch control structure further includes a second touch control metal layer, the second touch control metal layer includes a plurality of first touch control electrode blocks, a plurality of second touch control electrode blocks, a plurality of first lead wires and a plurality of second lead wires, the first lead wires are connected to the first touch control electrode blocks, and the second lead wires are connected to the second touch control electrode blocks; The first insulating layer is provided with a second via hole, the pixel definition layer is provided with a third via hole, the orthographic projection of the third via hole on the substrate at least partially overlaps with the orthographic projection of the second via hole on the substrate, and the first lead wire and / or the second lead wire are electrically connected to the touch wiring through the second via hole and the third via hole; Preferably, the display panel also includes a third insulating layer, which is located on the side of the touch wiring layer away from the substrate, and the third insulating layer is provided with a fourth via hole, and the orthographic projection of the fourth via hole on the substrate at least partially overlaps with the orthographic projection of the second via hole or the third via hole on the substrate, and the first lead wire and / or the second lead wire are electrically connected to the touch wiring through the second via hole, the third via hole and the fourth via hole.

6. The display panel according to claim 1, characterized in that: The device further comprises at least one dam, wherein the dam is located between the substrate and the pixel definition layer and in the non-display area, the dam is arranged around the display area, and the pixel definition layer contacts and covers the dam; Preferably, the orthographic projection of the first insulating layer on the substrate covers the orthographic projection of the dam on the substrate; the orthographic projection of the first encapsulation layer on the substrate covers the orthographic projection of the dam on the substrate; Preferably, the display panel further comprises a plurality of touch lines, and the orthographic projections of the touch lines on the substrate are located on a side of the orthographic projection of the dam on the substrate away from the display area; Preferably, the display panel further comprises a gate driving circuit, the gate driving circuit is located on a side of the pixel definition layer close to the substrate and in the non-display area, and the orthographic projection of the gate driving circuit on the substrate is located on a side of the orthographic projection of the dam on the substrate close to the display area; Preferably, the number of the dams is two, and the dams include a first dam and a second dam that are spaced apart, the first dam surrounds the display area, and the second dam surrounds the first dam; Preferably, the display panel further comprises a third insulating layer, and the third insulating layer is located on a side of the pixel definition layer close to the substrate; the dam and the third insulating layer are prepared in the same layer; Preferably, the material of the dam is the same as that of the third insulating layer; Preferably, the display panel further comprises a fourth insulating layer, and the fourth insulating layer is located on a side of the third insulating layer close to the substrate; the dam comprises a first sub-portion and a second sub-portion stacked in sequence in a direction away from the substrate, the first sub-portion and the fourth insulating layer are prepared in the same layer, and the second sub-portion and the third insulating layer are prepared in the same layer; Preferably, a material of the first sub-portion is the same as a material of the fourth insulating layer, and a material of the second sub-portion is the same as a material of the third insulating layer.

7. The display panel according to claim 1, characterized in that: It also includes an isolation structure, which is located on the side of the pixel definition layer away from the substrate, and the isolation structure encloses a plurality of isolation openings; the display panel also includes a plurality of light-emitting devices, and the light-emitting devices are located in the isolation openings; Preferably, the isolation structure comprises a first portion and a second portion sequentially stacked in a direction away from the substrate, and an orthographic projection of the second portion on the substrate covers an orthographic projection of the first portion on the substrate; Preferably, the isolation structure further comprises a third portion, the third portion is located on a side of the first portion close to the substrate, and an orthographic projection of the first portion on the substrate is located within an orthographic projection of the third portion on the substrate; Preferably, the material of the first portion includes a conductive material, the light emitting device includes a first electrode, the first electrode and the first portion are overlapped, or the first electrode is in contact with a side wall of the first portion; Preferably, the light emitting device further comprises a second electrode and a light emitting functional layer, and in a direction away from the substrate, the second electrode, the light emitting functional layer and the first electrode are stacked in sequence.

8. A display panel, characterized in that: The display panel has a display area and a non-display area surrounding at least a portion of the display area, and comprises: substrate; A pixel definition layer, located on one side of the substrate, the pixel definition layer extending from the display area to the non-display area; A packaging structure, located on a side of the pixel definition layer away from the substrate, the packaging structure comprising a first packaging layer; A touch control structure, located on a side of the packaging structure away from the substrate, the touch control structure comprising a first insulating layer; Wherein, the first encapsulation layer and the first insulating layer both extend from the display area to the non-display area, and in the non-display area, the orthographic projection of the first insulating layer on the substrate covers the orthographic projection of the first encapsulation layer on the substrate, and part of the first insulating layer contacts the pixel definition layer.

9. A method for preparing a display panel, characterized in that: The display panel has a display area and a non-display area surrounding at least a portion of the display area, and the preparation method includes: Preparing a pixel definition layer on a substrate, wherein the pixel definition layer extends from the display area to the non-display area; Prepare a first encapsulation layer on the side of the pixel definition layer away from the substrate; Prepare a touch control structure on a side of the first encapsulation layer away from the substrate, wherein the touch control structure includes a first insulating layer; The first encapsulation layer and the first insulating layer both extend from the display area to the non-display area, and an edge of the first insulating layer exceeds an edge of the first encapsulation layer and contacts the pixel definition layer.

10. The preparation method according to claim 9, characterized in that: The step of preparing a touch structure on a side of the first encapsulation layer facing away from the substrate comprises: Prepare a first film layer on a side of the first encapsulation layer away from the substrate; Preparing a first metal layer on a side of the first film layer away from the substrate, and patterning the first metal layer to obtain a first touch metal layer; preparing a second film layer on a side of the first touch metal layer away from the substrate, and patterning the first film layer and the second film layer respectively to obtain the first insulating layer and the second insulating layer; A second metal layer is prepared on the side of the second insulating layer away from the substrate, and the second metal layer is patterned to obtain the second touch metal layer. The first insulating layer, the first touch metal layer, the second insulating layer and the second touch metal layer constitute the touch structure.

11. The preparation method according to claim 9, characterized in that: Before the step of preparing the pixel definition layer on the substrate, the method further comprises: forming a fourth film layer on the substrate, and patterning the fourth film layer to obtain a fourth insulating layer and a first sub-portion of the dam; forming a third film layer on a side of the fourth insulating layer away from the substrate, and patterning the third film layer to obtain a third insulating layer and a second sub-portion of the dam; the first sub-portion and the second sub-portion constitute the dam, and the dam is located in the non-display area; Preferably, before the step of forming a third film layer on the side of the fourth insulating layer facing away from the substrate, the method further includes: preparing a third metal layer on the side of the fourth insulating layer facing away from the substrate, and patterning the third metal layer to obtain a plurality of touch lines, wherein the touch lines are located in a non-display area, and the orthographic projection of the touch lines on the substrate is located on the side of the orthographic projection of the dam on the substrate facing away from the display area.

12. The preparation method according to claim 9, characterized in that: Before the step of preparing the pixel definition layer on the substrate, the method further comprises: forming a fourth insulating layer and a third insulating layer on the substrate in sequence, and patterning the third insulating layer and the fourth insulating layer to obtain a dam, wherein the dam is located in the non-display area; Preferably, after forming the fourth insulating layer and before forming the third insulating layer, the method further includes: preparing a third metal layer on the side of the fourth insulating layer facing away from the substrate, and patterning the third metal layer to obtain a plurality of touch lines, the touch lines are located in the non-display area, and the orthographic projection of the touch lines on the substrate is located on the side of the orthographic projection of the dam on the substrate facing away from the display area.

13. The preparation method according to claim 9, characterized in that: Before the step of preparing a pixel definition layer on the substrate, the method further comprises: preparing a second electrode layer on the substrate, the second electrode layer comprising a plurality of second electrodes, the pixel definition layer enclosing a plurality of pixel openings, the pixel openings exposing portions of the second electrodes; After the step of preparing a pixel definition layer on the substrate, the method further comprises: preparing an isolation structure on a side of the pixel definition layer away from the substrate, the isolation structure enclosing a plurality of isolation openings, the isolation openings being connected to the pixel openings; A light-emitting layer, a first electrode layer, and a second encapsulation layer are sequentially prepared on a side of the pixel definition layer away from the substrate, the second electrode layer, the light-emitting layer, and the first electrode layer form a plurality of light-emitting devices, the light-emitting devices are at least located in the pixel opening, the second encapsulation layer comprises a plurality of encapsulation units arranged at intervals, the encapsulation units correspond to the pixel openings one by one, and the orthographic projections of the encapsulation units on the substrate cover the orthographic projections of the light-emitting devices on the substrate; Preferably, after the steps of sequentially preparing a light-emitting layer, a first electrode layer and a second encapsulation layer on a side of the pixel definition layer facing away from the substrate, the method further comprises: preparing a third encapsulation layer on a side of the second encapsulation layer facing away from the substrate, the orthographic projection of the third encapsulation layer on the substrate covers the orthographic projection of the second encapsulation layer on the substrate, and the third encapsulation layer terminates at a side of the dam close to the display area.

14. A display device, characterized in that: A display panel comprising any one of claims 1 to 8, or a display panel prepared by the preparation method according to any one of claims 9 to 13.

Images