Dark spot repairing method, display panel and display device

Abstract

The invention discloses a dark spot repairing method, a display panel and a display device.The dark spot repairing method comprises the steps that dark spot pixels in the display panel are determined, the display panel comprises a substrate, and each dark spot pixel comprises a first electrode, a light-emitting material layer and a second electrode which are sequentially arranged in a stacked mode in the direction away from the substrate; a laser pattern is generated, the laser pattern comprises a plurality of laser sub-patterns which are arranged in a nested mode from inside to outside, and the energy of the laser sub-patterns is smaller than the ablation energy of the second electrode; and irradiating the second electrode of the dark pixel by using the laser pattern so as to repair the dark pixel. According to the dark spot repairing method provided by the invention, the dark spot repairing effect can be improved, and the dark spot repairing efficiency can be improved.

Description

Technical Field

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

[0002] During the preparation process of the display panel, sometimes pixels fail to emit light normally, that is, dark spots appear on the display screen, so the pixels that fail to emit light normally need to be repaired. Summary of the invention

[0003] The present application provides a dark spot repair method, a display panel, and a display device, which can improve the effect of dark spot repair and the efficiency of dark spot repair.

[0004] A first aspect of an embodiment of the present application provides a dark spot repair method, the method comprising: determining a dark spot pixel in a display panel, wherein the display panel comprises a substrate, and the dark spot pixel comprises a first electrode, a light-emitting material layer, and a second electrode stacked in sequence in a direction away from the substrate; generating a laser pattern, wherein the laser pattern comprises a plurality of laser sub-patterns nested from the inside to the outside, and the energy of the laser sub-patterns is less than the ablation energy of the second electrode; and irradiating the second electrode of the dark spot pixel with the laser pattern to repair the dark spot pixel.

[0005] Wherein, the centers of the plurality of laser sub-patterns coincide.

[0006] Wherein, the shapes of the plurality of laser sub-patterns are the same.

[0007] Wherein, the plurality of laser sub-patterns are arranged at equal intervals.

[0008] Among them, the plurality of laser sub-patterns are all circular ring laser sub-patterns.

[0009] Wherein, the laser sub-pattern is provided with a first gap.

[0010] Wherein, the laser sub-pattern is provided with at least two first gaps.

[0011] The laser sub-patterns are provided with at least two connecting lines passing through the first notch at the center of the laser sub-pattern.

[0012] Wherein, the laser sub-pattern is provided with two first gaps.

[0013] Wherein, the first gaps provided in the plurality of laser sub-patterns are arranged along the same straight line direction.

[0014] Wherein, the laser pattern is a green laser pattern.

[0015] Wherein, the first electrode is an anode, and the second electrode is a cathode.

[0016] Wherein, the step of generating the laser pattern includes: determining the target parameters of the laser pattern according to the size of the dark spot pixels, the target parameters including at least one of the size, spacing and number of the plurality of laser sub-patterns; and generating the laser pattern according to the target parameters.

[0017] Wherein, the distance between two adjacent laser sub-patterns ranges from 1 micron to 1.3 microns.

[0018] A second aspect of an embodiment of the present application provides a display panel, which includes: a substrate; a light-emitting layer, arranged on one side of the substrate, including light-emitting pixels, the light-emitting pixels including a first electrode, a light-emitting material layer and a second electrode arranged in sequence in a direction away from the substrate, wherein a surface of the second electrode away from the first electrode is provided with a laser trace, the laser trace including a plurality of laser sub-traces nested from the inside to the outside, and the depth of the laser sub-traces is less than the thickness of the second electrode.

[0019] Wherein, the centers of the plurality of laser sub-traces coincide.

[0020] Wherein, the shapes of the plurality of laser sub-traces are the same.

[0021] Wherein, a plurality of the laser sub-traces are arranged at equal intervals.

[0022] Among them, the plurality of laser sub-traces are all circular ring laser sub-traces.

[0023] Wherein, the laser sub-trace is provided with a second notch.

[0024] Wherein, the laser sub-trace is provided with at least two second notches.

[0025] The laser sub-trace is provided with at least two second notches whose connecting lines pass through the center of the laser sub-trace.

[0026] Wherein, the laser sub-trace is provided with two second notches.

[0027] Wherein, the second notches provided in the plurality of laser sub-traces are arranged along the same straight line direction.

[0028] Wherein, the distance between two adjacent laser sub-traces ranges from 1 micron to 1.3 microns;

[0029] Wherein, the depth range of the laser sub-trace is 40 angstroms to 50 angstroms;

[0030] Wherein, the first electrode is an anode, and the second electrode is a cathode.

[0031] A third aspect of an embodiment of the present application provides a display device, comprising a display panel provided by any one of the above items.

[0032] The beneficial effect is: when the present application adopts laser irradiation to repair dark spot pixels, the generated laser pattern includes multiple laser sub-patterns nested from the inside to the outside, so that during the laser irradiation process, if the conductive foreign matter in the dark spot pixel is just irradiated by the laser sub-pattern, at least the conductive foreign matter in contact with the second electrode will be ablated; if the conductive foreign matter is not irradiated by the laser sub-pattern, the conductive foreign matter will most likely be located between two adjacent laser sub-patterns. At this time, the heat generated by the two adjacent laser sub-patterns will be transferred to the conductive foreign matter, and at least the conductive foreign matter in contact with the second electrode can be ablated. At the same time, the nested arrangement of multiple laser sub-patterns can also reduce the damage to the second electrode caused by laser irradiation. Therefore, the dark spot repair method provided by the present application can not only improve the effect of dark spot repair, but also improve the efficiency of dark spot repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0034] Figure 1 It is a flow chart of an implementation method of a dark spot repair method of the present application;

[0035] Figure 2 It is a schematic structural diagram of an embodiment of a display panel of the present application;

[0036] Figure 3 It is a structural schematic diagram of the first embodiment of the laser pattern of the present application;

[0037] Figure 4 It is a structural schematic diagram of the second embodiment of the laser pattern of the present application;

[0038] Figure 5 This is a schematic structural diagram of a third embodiment of the laser pattern of the present application;

[0039] Figure 6 It is a structural schematic diagram of the fourth embodiment of the laser pattern of the present application. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] It should be noted that the terms "first" and "second" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0042] See also Figure 1 , Figure 1 : is a schematic diagram of a process of an embodiment of a dark spot repair method of the present application, the method comprising:

[0043] S11: Determine dark pixels in the display panel.

[0044] See also Figure 2 The display panel includes a substrate 110 and a light emitting layer 120 disposed on one side of the substrate 110. The light emitting layer 120 includes a plurality of light emitting pixels 121. Each light emitting pixel 121 includes a first electrode 1211, a light emitting material layer 1212, and a second electrode 1213 that are sequentially stacked in a direction away from the substrate 110. In one embodiment, the first electrode 1211 is an anode and the second electrode 1213 is a cathode. In other embodiments, the first electrode 1211 may be a cathode and the second electrode 1213 may be an anode.

[0045] A dark pixel refers to a light-emitting pixel 121 in the light-emitting layer 120 that cannot emit light normally after the display panel is lit. The possible reason why the light-emitting pixel 121 cannot emit light normally is: during the preparation process, a conductive foreign matter appears on the first electrode 1211 (for example, the film layer in the first electrode 1211 is oxidized and a conductive foreign matter is precipitated). With the superposition of subsequent film layers, the conductive foreign matter pierces the film layer above the first electrode 1211 and contacts the second electrode 1213, thereby causing the first electrode 1211 and the second electrode 1213 to short-circuit, thereby causing the light-emitting pixel 121 to fail to emit light normally. Therefore, in order to repair the dark pixel, it is necessary to ablate the conductive foreign matter and interrupt the electrical connection between the conductive foreign matter and the second electrode 1213. Among them, for the sake of convenience, the dark pixel is marked as 122 below.

[0046] In one embodiment, the display panel can be lit up, and an optical detection device can be used to detect whether each pixel in the display panel emits light normally, and the pixels that do not emit light normally are determined to be dark pixels. The optical detection device includes but is not limited to a brightness meter, a photoresistor, a charge coupled device, etc.

[0047] Continue reading Figure 2 The display panel may further include a driving circuit layer 130, a pixel definition layer 140, an encapsulation layer 150 and other structures. The driving circuit layer 130, the pixel definition layer 140, and the encapsulation layer 150 are all existing structures and will not be described in detail here.

[0048] S12: Generate a laser pattern, wherein the laser pattern includes a plurality of laser sub-patterns nested from the inside out, and the energy of the laser sub-patterns is less than the ablation energy of the second electrode.

[0049] S13: irradiating the second electrode of the dark pixel with a laser pattern to repair the dark pixel.

[0050] When performing dark spot repair in related technologies, in order to ablate conductive foreign matter, it is usually necessary to adjust the laser spot to be consistent with the size of the conductive foreign matter, and manually aim the laser spot at the foreign matter. The success rate of this repair method is related to the operator, and the actual mass production efficiency is extremely low. In addition, the yield fluctuates greatly and the controllability is poor. The laser spot may also cause the breakdown of the second electrode 1213, resulting in the lack of part of the luminous area of ​​the luminous pixel 121 after repair, resulting in poor repair effect.

[0051] See also Figure 3 , Figure 3 In the present application, the laser pattern 10 is irradiated on the dark spot pixel 122. The laser pattern 10 includes multiple laser sub-patterns 111. The multiple laser sub-patterns 111 are spaced and nested, and the energy of the laser sub-pattern 111 is less than the ablation energy of the second electrode 1213, that is, the second electrode 1213 will not be penetrated by the laser sub-pattern 111.

[0052] At the same time, the energy of the laser sub-pattern 111 is greater than the ablation energy of the conductive foreign matter in the dark pixel 122. After the laser pattern 10 is irradiated on the second electrode 1213 of the dark pixel 122, if the conductive foreign matter in the dark pixel 122 is just irradiated by the laser sub-pattern 111, at least the conductive foreign matter in contact with the second electrode 1213 is ablated. If the conductive foreign matter is not irradiated by the laser sub-pattern 111, the conductive foreign matter is likely to be located between two adjacent laser sub-patterns 111. At this time, the heat generated by the two adjacent laser sub-patterns 111 will be transferred to the conductive foreign matter. At the same time, the nested arrangement of multiple laser sub-patterns 111 can also reduce the damage of laser irradiation to the second electrode 1213, thereby avoiding failure of the entire second electrode 1213 and improving repair reliability. Therefore, the dark spot repair method provided in the present application can not only improve the effect of dark spot repair, but also improve the efficiency of dark spot repair.

[0053] In addition, after the laser irradiates the second electrode 1213 of the dark spot pixel 122, the laser generates heat, and the light-emitting material layer 1212 will expand after absorbing the heat. Therefore, as the light-emitting material layer 1212 expands, the distance between the second electrode 1213 and the first electrode 1211 will increase. At this time, the second electrode 1213 can be prevented from contacting with conductive foreign matter to a certain extent, reducing the probability of a short circuit between the first electrode 1211 and the second electrode 1213, thereby achieving the purpose of repairing the dark spot pixel 122.

[0054] It can be understood that after the laser pattern 10 is used to irradiate the second electrode 1213 of the dark spot pixel 122, a laser mark (not shown) will be left on the second electrode 1213, and the shape of the laser mark will match the shape of the laser pattern 10, that is, the laser mark includes a plurality of laser sub-marks nested from the inside to the outside, and the depth of the laser sub-mark is less than the thickness of the second electrode 1213, that is, the laser sub-mark does not penetrate the second electrode 1213.

[0055] In one embodiment, the depth of the laser sub-trace is in the range of 40 angstroms to 50 angstroms, for example, the depth of the laser sub-trace is in the range of 40 angstroms, 45 angstroms, or 50 angstroms.

[0056] Continue reading Figure 3In one embodiment, the centers of the multiple laser sub-patterns 111 coincide, that is, the multiple laser sub-patterns 111 are concentrically arranged. Accordingly, the centers of the multiple laser sub-traces coincide. Of course, in other embodiments, the centers of the multiple laser sub-patterns 111 may not coincide, and may be specifically arranged according to actual needs.

[0057] Continue reading Figure 3 , the shapes of the multiple laser sub-patterns 111 are the same, and accordingly, the shapes of the multiple laser sub-traces are the same. In other embodiments, Figure 4 As shown, the shapes of the multiple laser sub-patterns 111 may also be different, and accordingly, the shapes of the multiple laser sub-traces may also be different.

[0058] Continue reading Figure 3 , multiple laser sub-patterns 111 are arranged at equal intervals to improve the success rate of ablating conductive foreign matter between two adjacent laser sub-patterns 111, and accordingly, multiple laser sub-traces are arranged at equal intervals. In other embodiments, such as Figure 4 As shown, the multiple laser sub-patterns 111 may not be arranged at equal intervals, and accordingly, the multiple laser sub-traces may also not be arranged at equal intervals.

[0059] Continue reading Figure 3 , the multiple laser sub-patterns 111 are all circular ring laser sub-patterns, and accordingly, the multiple laser sub-traces are all circular ring laser sub-traces. Of course, in other embodiments, the multiple laser sub-patterns 111 can also be rectangular or triangular laser sub-patterns, which can be set according to actual needs.

[0060] See also Figure 5In one embodiment, the laser sub-pattern 111 is provided with a first notch 1111. Specifically, since the laser sub-pattern 111 is provided with a first notch 1111, the laser sub-trace is also provided with a notch, and the notch provided with the laser sub-trace is defined as a second notch, so that the second electrode 1213 located inside the laser sub-trace and the second electrode 1213 located outside the laser sub-trace will form an electrical connection at the second notch, further avoiding partial regional failure of the second electrode 1213 of the light-emitting pixel 121, thereby ensuring the light-emitting area of ​​the light-emitting pixel 121. At the same time, when encountering laser energy fluctuations or thickness changes of the second electrode 1213, even if the laser sub-pattern 111 penetrates the second electrode 1213, that is, the laser sub-trace penetrates the second electrode 1213, the provision of the first notch 1111 and the second notch can also make the second electrode 1213 located inside the laser sub-trace and the second electrode 1213 located outside the laser sub-trace still form an electrical connection, thereby retaining the light-emitting ability of the light-emitting pixel 121, thereby ensuring that the light-emitting efficiency of the display panel can still meet the requirements. It is understandable that if the laser sub-pattern 111 penetrates the second electrode 1213, the area of ​​the second electrode 1213 not illuminated by the laser sub-pattern 111 can still maintain a connection with the first electrode 1211, and after repair, the corresponding area of ​​the dark spot pixel 122 can still emit light normally.

[0061] The second notch 1111 and the width of the second notch can be adjusted according to actual needs and are not limited here.

[0062] Continue reading Figure 5 In one embodiment, the laser sub-pattern 111 is provided with at least two first notches 1111, and correspondingly, the laser sub-trace is provided with at least two second notches, which can further ensure the electrical connection between the second electrode 1213 located inside the laser sub-trace and the second electrode 1213 located outside the laser sub-trace. It should be noted that, in other embodiments, the laser sub-pattern 111 may also be provided with only one first notch 1111.

[0063] Continue reading Figure 5 In one embodiment, the laser sub-pattern 111 has at least two first notches 1111 whose connecting lines pass through the center of the laser sub-pattern 111, and correspondingly, the laser sub-trace has at least two second notches whose connecting lines pass through the center of the laser sub-trace. This arrangement can further prevent the second electrode 1213 from failing.

[0064] Continue reading Figure 5 In one embodiment, the laser sub-pattern 111 has two first notches 1111, and correspondingly, the laser sub-trace has two second notches. It should be noted that in other embodiments, the laser sub-pattern 111 may also have three, four or even more first notches 1111. Figure 6 In the embodiment, the laser sub-pattern 111 is provided with three first notches 1111 .

[0065] Continue reading Figure 5 In one embodiment, the first gaps 1111 of the plurality of laser sub-patterns 111 are arranged along the same straight line direction, and correspondingly, the second gaps of the plurality of laser sub-traces are arranged along the same straight line direction.

[0066] In one embodiment, the laser pattern 10 is a green laser pattern. Specifically, considering that the green laser has strong penetrating power and can ablate conductive foreign matter well, the laser pattern 10 is set to be a green laser pattern, but in other embodiments, the laser pattern 10 can also be a blue laser pattern, a red laser pattern, or laser patterns of other colors, which are not listed here one by one.

[0067] In one embodiment, step S12 of generating a laser pattern comprises:

[0068] S121: Determine target parameters of the laser pattern according to the size of the dark spot pixel, where the target parameters include at least one of the size, spacing, and number of the plurality of laser sub-patterns.

[0069] S122: Generate a laser pattern according to the target parameters.

[0070] Specifically, the size (specifically including at least one parameter of width, inner diameter, and outer diameter), spacing, number, and other parameters of the multiple laser sub-patterns 11 in the laser pattern 10 are generated according to the size of the dark pixel 122 (specifically referring to the surface area of ​​the second electrode 1213). In one embodiment, the larger the size of the dark pixel 122, the larger the outer diameter of the laser sub-pattern 111. In one embodiment, the larger the size of the dark pixel 122, the greater the number of laser sub-patterns 111. In one embodiment, the larger the size of the dark pixel 122, the larger the spacing between two adjacent laser sub-patterns 111.

[0071] By determining the target parameters of the laser pattern 10 according to the size of the dark spot pixel 122 , the ablation effect and ablation efficiency can be ensured.

[0072] In one embodiment, the spacing between two adjacent laser sub-patterns 111 ranges from 1 micron to 1.3 microns, for example, the spacing between two adjacent laser sub-patterns 111 ranges from 1 micron, 1.1 microns, 1.2 microns or 1.3 microns, and this setting can ablate the conductive foreign matter in contact with the second electrode 1213 to the greatest extent. Accordingly, the spacing between two adjacent laser sub-traces also ranges from 1 micron to 1.3 microns.

[0073] In one embodiment, the width of the first notch 1111 of the laser sub-pattern 111 may also be determined according to the size of the dark spot pixel 122. For example, in one embodiment, the larger the size of the dark spot pixel 122, the larger the width of the first notch 1111 of the laser sub-pattern 111.

[0074] It should be noted that, in other embodiments, the size, interval, and number of the plurality of laser sub-patterns 111 in the laser pattern 10 may be preset and may be selected according to actual needs, and are not limited here.

[0075] The present application also includes a display panel repaired by the above repair method, see Figure 2 The display panel includes a substrate 110 and a light-emitting layer 120 .

[0076] The substrate 110 plays a supporting role in the display panel, and it can be a flexible substrate or a rigid substrate. When the substrate 110 is a flexible substrate, its material can be polyimide (PI), and when the substrate 110 is a rigid substrate, its material can be glass or metal. The present application does not limit the structure of the substrate 110.

[0077] The light-emitting layer 120 is arranged on one side of the substrate 110, and includes a light-emitting pixel 121. The light-emitting pixel 121 includes a first electrode 1211, a light-emitting material layer 1212 and a second electrode 1213 which are arranged in sequence in a direction away from the substrate 110, wherein a surface of the second electrode 1213 away from the first electrode 1211 is provided with a laser mark (not shown in the figure), and the laser mark includes a plurality of laser sub-marks nested from the inside to the outside, and the depth of the laser mark is less than the thickness of the second electrode 1213.

[0078] In one embodiment, the centers of the plurality of laser sub-traces coincide.

[0079] In one embodiment, the shapes of the plurality of laser sub-traces are the same.

[0080] In one embodiment, the plurality of laser sub-traces are arranged at equal intervals.

[0081] In one embodiment, the plurality of laser sub-traces are all circular ring laser sub-traces.

[0082] In one embodiment, the first electrode 1211 is an anode, and the second electrode 1213 is a cathode.

[0083] In one embodiment, the laser sub-trace is provided with a second notch.

[0084] In one embodiment, the laser sub-trace is provided with at least two second gaps.

[0085] In one embodiment, the laser sub-trace is provided with at least two second notches whose connecting line passes through the center of the laser sub-trace.

[0086] In one embodiment, the laser sub-trace is provided with two second notches.

[0087] In one embodiment, the second notches provided in the plurality of laser sub-traces are arranged along the same straight line direction.

[0088] The laser trace is completely determined by the laser pattern 10 , so the shape of the laser trace corresponds to the same shape of the laser pattern 10 . For details, please refer to the above introduction and will not be repeated here.

[0089] In addition, the present application also includes a display device, which includes a display panel in any of the above-mentioned embodiments. The specific structure can be found in the above-mentioned related content, wherein the display device can be any device with restriction functions such as a mobile phone, a computer, a game console, etc., and is not limited here.

[0090] The above description is only an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A dark spot repair method, characterized in that: The method comprises: Determine a dark pixel in a display panel, wherein the display panel includes a substrate, and the dark pixel includes a first electrode, a light-emitting material layer, and a second electrode sequentially stacked in a direction away from the substrate; generating a laser pattern, wherein the laser pattern comprises a plurality of laser sub-patterns nested from the inside out, and the energy of the laser sub-patterns is less than the ablation energy of the second electrode; The second electrode of the dark pixel is irradiated with the laser pattern to repair the dark pixel.

2. The method according to claim 1, characterized in that The centers of the plurality of laser sub-patterns coincide with each other; Preferably, the shapes of the plurality of laser sub-patterns are the same; Preferably, the plurality of laser sub-patterns are arranged at equal intervals; Preferably, the plurality of laser sub-patterns are all circular ring laser sub-patterns.

3. The method according to claim 1, characterized in that The laser sub-pattern is provided with a first notch; Preferably, the laser sub-pattern is provided with at least two of the first gaps; Preferably, the laser sub-pattern is provided with at least two connecting lines passing through the first notch at the center of the laser sub-pattern; Preferably, the laser sub-pattern is provided with two first notches; Preferably, the first gaps provided in the plurality of laser sub-patterns are arranged along the same straight line direction.

4. The method according to claim 1, characterized in that: The laser pattern is a green laser pattern; Preferably, the first electrode is an anode, and the second electrode is a cathode.

5. The method according to claim 1, characterized in that The step of generating a laser pattern comprises: Determining a target parameter of the laser pattern according to the size of the dark spot pixel, wherein the target parameter includes at least one of the size, spacing, and number of the plurality of laser sub-patterns; generating the laser pattern according to the target parameters; Preferably, the distance between two adjacent laser sub-patterns ranges from 1 micron to 1.3 microns.

6. A display panel, characterized in that: include: substrate; The light-emitting layer is arranged on one side of the substrate, and includes light-emitting pixels, wherein the light-emitting pixels include a first electrode, a light-emitting material layer, and a second electrode arranged in sequence in a direction away from the substrate, wherein a surface of the second electrode away from the first electrode is provided with a laser trace, and the laser trace includes a plurality of laser sub-traces nested from the inside to the outside, and the depth of the laser sub-traces is less than the thickness of the second electrode.

7. The display panel according to claim 6, characterized in that: The centers of the plurality of laser sub-traces coincide with each other; Preferably, the shapes of the plurality of laser sub-traces are the same; Preferably, the plurality of laser sub-traces are arranged at equal intervals; Preferably, the plurality of laser sub-traces are all circular ring laser sub-traces.

8. The display panel according to claim 6, characterized in that: The laser sub-trace is provided with a second notch; Preferably, the laser sub-trace is provided with at least two of the second notches; Preferably, the laser sub-trace is provided with at least two second notches whose connecting lines pass through the center of the laser sub-trace; Preferably, the laser sub-trace is provided with two second notches; Preferably, the second notches provided in the plurality of laser sub-traces are arranged along the same straight line direction.

9. The display panel according to claim 6, characterized in that: The distance between two adjacent laser sub-traces ranges from 1 micron to 1.3 microns; Preferably, the depth of the laser sub-trace ranges from 40 angstroms to 50 angstroms; Preferably, the first electrode is an anode, and the second electrode is a cathode.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 6-9.

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