A laser etching method of a display panel, a display panel and a display device

Abstract

This application provides a laser etching method for a display panel, a display panel, and a display device. The laser etching method includes: a laser source moving along a predetermined path to etch a first electrode; the predetermined path includes several execution segments, and the trajectory generated by the laser source moving along the execution segments is a light spot trajectory; the several execution segments include a first execution segment, a second execution segment, and a third execution segment; when the laser source moves along the first execution segment, a first light spot trajectory is generated; when it moves along the second execution segment, a second light spot trajectory is generated; and when it moves along the third execution segment, a third light spot trajectory is generated; the first light spot trajectory and the second light spot trajectory do not overlap, but the first light spot trajectory and the third light spot trajectory overlap; the laser source moves sequentially along the first execution segment, the second execution segment, and the third execution segment. This application can effectively avoid heat accumulation during laser etching and prevent splitting between some film layers within the display panel.

Description

[Technical Field]

[0001] This application relates to the field of display technology, and in particular to a laser etching method for a display panel, a display panel, and a display device. [Background Technology]

[0002] With the advancement of technology and the increase in consumer demand, under-display camera technology has been widely applied to display panels. To ensure the display performance of the camera area, existing technology involves setting pixel units within the camera under panel (CUP area); at the same time, to meet the light transmittance requirements of the camera area, electrodes need to be etched in the camera under panel to form hollow areas for light transmission.

[0003] The cutouts are usually created by laser etching. However, during the laser etching process, some film layers inside the display panel may split, which can affect the performance of the display panel.

[0004] [Application Content]

[0005] In view of this, embodiments of this application provide a laser etching method for a display panel, a display panel, and a display device.

[0006] In a first aspect, embodiments of this application provide a laser etching method for a display panel. The display panel includes a first region, and the first region includes a first electrode. The laser etching method is used to etch the first electrode. The laser etching method includes:

[0007] The laser source moves along a set path to etch the first electrode; the set path includes several execution segments, and when the laser source moves along the execution segments, the trajectory of the laser generated by the laser source is a spot trajectory; the several execution segments include a first execution segment, a second execution segment, and a third execution segment;

[0008] When the laser source moves along the first execution segment, the trajectory of the laser generated by the laser source is the first spot trajectory; when the laser source moves along the second execution segment, the trajectory of the laser generated by the laser source is the second spot trajectory; when the laser source moves along the third execution segment, the trajectory of the laser generated by the laser source is the third spot trajectory; the first spot trajectory and the second spot trajectory do not overlap, and the first spot trajectory and the third spot trajectory overlap.

[0009] The laser source moves sequentially on the first execution segment, the second execution segment, and the third execution segment.

[0010] In one implementation of the first aspect, several execution segments run in parallel.

[0011] In one implementation of the first aspect, the trajectory of the third spot overlaps with the trajectory of the first spot and the trajectory of the second spot, respectively.

[0012] In one implementation of the first aspect, the third spot trajectory does not overlap with other spot trajectories, except for the first spot trajectory and the second spot trajectory.

[0013] In one implementation of the first aspect, the plurality of execution segments include a plurality of first execution segments, a plurality of second execution segments, and a plurality of third execution segments, and the adjacent first execution segments include a second execution segment.

[0014] In one implementation of the first aspect, the laser source moves along at least a portion of the first execution segment and then moves along at least a portion of the second execution segment.

[0015] In one implementation of the first aspect, the laser source moves along multiple first execution segments and then moves along multiple second execution segments.

[0016] In one implementation of the first aspect, the laser source moves along a first execution segment and then moves along a second execution segment.

[0017] In one implementation of the first aspect, the laser source moves in the opposite direction to the laser source moving in the first execution segment.

[0018] Secondly, embodiments of this application provide a display panel, the display panel including a first region, the first region including a first electrode; the first electrode within the first region includes a cutout portion; the cutout portion of the first electrode is formed by the method of the first aspect.

[0019] In one implementation of the second aspect, the hollowed-out portion includes a first group of blemishes and a second group of blemishes. The first group of blemishes includes a plurality of first blemishes arranged along a first direction, and the second group of blemishes includes a plurality of second blemishes arranged along the first direction. The area of ​​the first blemishes is smaller than the area of ​​the second blemishes.

[0020] The second blemish group is located between two adjacent first blemish groups arranged along the second direction, which intersects with the first direction.

[0021] In one implementation of the second aspect, the first blemish group and the second blemish group are arranged alternately along the second direction.

[0022] In one implementation of the second aspect, at least two first blemish groups are arranged sequentially along the second direction.

[0023] In one implementation of the second aspect, the first scar is shaped like fish scales, and the second scar is shaped like a crescent moon.

[0024] Thirdly, embodiments of this application provide a display device, which includes the display panel of the second aspect.

[0025] In this embodiment, when the laser source moves along the first execution segment, the trajectory of the laser generated by the laser source is the first spot trajectory; when the laser source moves along the second execution segment, the trajectory of the laser generated by the laser source is the second spot trajectory; when the laser source moves along the third execution segment, the trajectory of the laser generated by the laser source is the third spot trajectory; the first spot trajectory and the second spot trajectory do not overlap, but the first spot trajectory and the third spot trajectory overlap; the laser source moves sequentially along the first execution segment, the second execution segment, and the third execution segment. It can be understood that the execution segments executed by the laser source in adjacent time periods are not adjacent. Therefore, the technical solution provided by this embodiment can effectively avoid heat accumulation during laser etching, thereby preventing thermal expansion between some film layers within the display panel and ultimately preventing splitting between some film layers within the display panel. [Attached Image Description]

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0029] Figure 3 A schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application;

[0030] Figure 4 A schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application;

[0031] Figure 5 A schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application;

[0032] Figure 6 A schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application;

[0033] Figure 7 A schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application;

[0034] Figure 8A schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application;

[0035] Figure 9 A schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application;

[0036] Figure 10 For this application Figure 1 and Figure 2 A schematic diagram of the structure of the CC region;

[0037] Figure 11 For this application Figure 1 and Figure 2 A schematic diagram of the structure of the CC region;

[0038] Figure 12 For this application Figure 11 A cross-sectional view along the NN' direction;

[0039] Figure 13 A schematic diagram of a blemish within a hollowed-out section provided in an embodiment of this application;

[0040] Figure 14 A schematic diagram of a blemish within a hollowed-out section provided in an embodiment of this application;

[0041] Figure 15 A schematic diagram of a blemish within a hollowed-out section provided in an embodiment of this application;

[0042] Figure 16 A schematic diagram of a blemish within a hollowed-out section provided in an embodiment of this application;

[0043] Figure 17 A display device is provided as an embodiment of this application.

[0044] Label Explanation

[0045] 100, Display panel; 101, Substrate; 102, Pixel definition layer; 103, Common organic layer; 104, Second electrode; 110, First electrode; 111, Cutout portion; 120, First blemish group; 121, First blemish; 130, Second blemish group; 131, Second blemish; 132, Third blemish; 200, Set route; 201, First execution segment; 202, Second execution segment; 203, Third execution segment; 204, Edge path; 301, First light spot trajectory; 302, Second light spot trajectory; 303, Third light spot trajectory; 400, Display device.

Detailed Implementation Methods

[0046] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0047] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0048] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0049] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0050] In the description of this specification, it should be understood that the terms "substantially", "approximately", "about", "about", "generally", "largely" used in the claims and embodiments of this application refer to values ​​that can be generally agreed upon within a reasonable range of process operations or tolerances, rather than a precise value.

[0051] It should be understood that although terms such as first, second, third, etc., may be used to describe areas in the embodiments of this application, these areas should not be limited to these terms. These terms are only used to distinguish areas from each other. For example, without departing from the scope of the embodiments of this application, a first execution segment may also be referred to as a second execution segment, and similarly, a second execution segment may also be referred to as a first execution segment.

[0052] Through meticulous and in-depth research, the applicant in this case has provided a solution to the problems existing in the prior art.

[0053] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application.

[0054] Please see Figure 1 and Figure 2A display panel 100 includes a display area AA and a non-display area NA. The display area AA is the area in the display panel 100 that primarily emits light for display. The non-display area NA surrounds the display area AA and is the area in the display panel 100 that primarily houses peripheral circuitry and packages. The display area AA includes a first area A1 and a second area A2, with the second area A2 at least partially surrounding the first area A1. For example... Figure 1 The display panel shown has a second area A2 surrounding a first area A1; Figure 2 The display panel shown has a second region A2 that surrounds the first region A1. To ensure that the first region A1 has high light transmittance, a specific film layer within the first region A1 needs to be laser-etched to form a hollow portion with high light transmittance.

[0055] The inventors discovered that during the laser etching process of a specific film layer (such as the cathode layer) in a display panel, the reason why other film layers in the display panel split is that: as the laser source moves, it gradually accumulates a large amount of energy in the display panel, causing some film layers in the display panel to expand due to heat. Since the expansion coefficients of the film layers are different, the deformation of these film layers is different, resulting in gaps and splitting between them.

[0056] Figure 3 This is a schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application.

[0057] Please see Figure 3 This application provides a laser etching method for a display panel 100. The display panel 100 includes a first region A1, and the first region A1 includes a first electrode 110. The laser etching method is used to etch the first electrode 110 within the first region A1. The laser etching method includes:

[0058] The laser source moves along a predetermined path 200 to etch the first electrode 110. In the attached diagram, the dashed line with arrows indicates the path of the laser source. It should be noted that the arrows represent only one possible direction of movement for the laser source and are not the only limiting factor.

[0059] The set route 200 includes several execution segments. When the laser source moves along the execution segments, the trajectory of the laser light generated by the laser source is a spot trajectory. In the attached diagram, a series of overlapping circles arranged along the direction of travel represent the spot trajectory generated by the laser source when it moves on the corresponding execution segment.

[0060] The execution path includes a first execution path 201, a second execution path 202, and a third execution path 203. When the laser source moves along the first execution path 201, the trajectory of the laser emitted by the laser source is the first spot trajectory 301; when the laser source moves along the second execution path 202, the trajectory of the laser emitted by the laser source is the second spot trajectory 302; when the laser source moves along the third execution path 203, the trajectory of the laser emitted by the laser source is the third spot trajectory 303. The first spot trajectory 301 and the second spot trajectory 302 do not overlap, but the first spot trajectory 301 and the third spot trajectory 303 overlap.

[0061] The laser source moves sequentially along the first execution segment 201, the second execution segment 202, and the third execution segment 203. That is, the laser source is located in the first execution segment 201 at the first moment, in the second execution segment 202 at the second moment, and in the third execution segment 203 at the third moment, with the second moment falling between the first and third moments. It should be noted that "sequentially" in this step refers only to the execution order of the first execution segment 201, the second execution segment 202, and the third execution segment 203, not that they are executed consecutively at any given time. In other words, "sequentially" does not mean that the second execution segment 202 is executed immediately after the first execution segment 201 is completed, nor does it mean that the third execution segment 203 is executed immediately after the second execution segment 202 is completed. For example, the laser source may include other execution paths between the first execution segment 201 and the second execution segment 202, and the laser source may also include other execution paths between the second execution segment 202 and the third execution segment 203. These other execution paths include at least one of several execution segments.

[0062] In this embodiment, when the laser source moves along the first execution segment 201, the trajectory of the laser generated by the laser source is the first spot trajectory 301; when the laser source moves along the second execution segment 202, the trajectory of the laser generated by the laser source is the second spot trajectory 302; when the laser source moves along the third execution segment 203, the trajectory of the laser generated by the laser source is the third spot trajectory 303. The first spot trajectory 301 and the second spot trajectory 302 do not overlap, while the first spot trajectory 301 and the third spot trajectory 303 overlap. The laser source moves sequentially along the first execution segment 201, the second execution segment 202, and the third execution segment 203. This can be understood as the execution segments executed by the laser source at least in two consecutive execution time periods not being adjacent. The execution time period refers to the time period used to execute a certain execution segment. That is, the trajectories of the laser source on the execution segments do not overlap in the two consecutive execution time periods, and the areas of laser energy concentration also do not overlap in the two consecutive time periods, thereby effectively avoiding the concentration of laser energy generated by the laser source in the two consecutive time periods. Therefore, the technical solution provided in this application embodiment can effectively avoid heat accumulation during laser etching, so that some film layers in the display panel 100 will not expand due to heat, and ultimately avoid splitting between some film layers in the display panel 100.

[0063] Please see Figure 3 In one embodiment of the present invention, other execution paths further include at least one edge path 204, which connects two execution segments. That is, the laser source moves along the edge path 204 after completing the previous execution segment and before executing the next execution segment. In this case, the laser source does not need to be turned off during the time period between completing the previous execution segment and the next execution segment, reducing the control difficulty of the laser source and saving production costs.

[0064] Among them, such as Figure 3 As shown, the extension direction of edge path 204 can be perpendicular to the extension direction of execution segment. Alternatively, the extension direction of edge path 204 can intersect with the extension direction of execution segment. The extension direction of edge path 204 is not limited. It should be noted that the solid lines with arrows in the attached diagram only represent one possible direction of movement of the laser source on edge path 204, and are not the only limitation on the direction of laser source movement.

[0065] Please see Figure 3 In one embodiment of the present invention, several execution segments are parallel. The parallel execution segments facilitate the movement of the laser source along the predetermined route 200, reducing the control difficulty of the laser source and lowering production costs.

[0066] Please see Figure 3In one embodiment of the present invention, the third beam trajectory 303 overlaps with the first beam trajectory 301, but does not overlap with the second beam trajectory 302. The non-overlapping of the second beam trajectory 302 and the third beam trajectory 303 means that the energy region generated by the laser source in executing the second execution segment 202 does not overlap with the energy region generated by the laser source in executing the third execution segment 203. Therefore, the energy generated by the laser source in the region of the second beam trajectory 302 and the energy generated by the laser source in the third beam trajectory 303 will not converge. Simultaneously, the overlap of the first beam trajectory 301 and the third beam trajectory 303, and the non-overlapping of the first beam trajectory 301 and the second beam trajectory 302, means that the energy generated by the laser source in the region of the first beam trajectory 301 is at least partially dissipated when the laser source is located on the second execution segment 202. When the third light spot trajectory 303 overlaps with the first light spot trajectory 301, there is less laser energy in the area where the first light spot trajectory 301 is located. This causes the energy generated by the laser source on the third light spot trajectory 303 to exceed a reasonable range in the area where the first light spot trajectory 301 and the third light spot trajectory 303 overlap. Therefore, it can effectively prevent laser energy accumulation, thereby avoiding the splitting of some film layers inside the display panel.

[0067] Figure 4 This is a schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application.

[0068] Please see Figure 4 In one embodiment of the present invention, the third light spot trajectory 303 overlaps with the first light spot trajectory 301 and the second light spot trajectory 302, respectively. The third light spot trajectory 303 overlaps with the first light spot trajectory 301 and the second light spot trajectory 302, so that the third light spot trajectory 303 can cover the gap between the first light spot trajectory 301 and the second light spot trajectory 302. Therefore, it is convenient to etch the first electrode 110 between the first execution segment 201 and the second execution segment 202 to ensure the light transmittance of the area.

[0069] Please see Figure 4 In one embodiment of the present invention, the third spot trajectory 303 does not overlap with other spot trajectories, except for the first spot trajectory 301 and the second spot trajectory 302. The fact that the third spot trajectory 303 does not overlap with other spot trajectories effectively avoids repeated etching of the same area by the laser. This saves laser resources and effectively avoids the negative impact on the display panel 100 caused by excessive laser etching.

[0070] Figure 5 This is a schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application.

[0071] Please see Figure 5 In one embodiment of the present invention, the plurality of execution segments include a plurality of first execution segments 201, a plurality of second execution segments 202, and a plurality of third execution segments 203, with a second execution segment 202 between adjacent first execution segments 201. Since a second execution segment 202 is included between two adjacent first execution segments 201, and the first light spot trajectory 301 and the second light spot trajectory 302 do not overlap, the accumulation of laser energy can be effectively avoided when executing two adjacent first execution segments 201, thereby preventing some film layers within the display panel 100 from splitting due to heat.

[0072] Please see Figure 5 In one embodiment, the laser source moves along at least a portion of the first execution path 201 and then moves along at least a portion of the second execution path 202. This can be understood as the laser source moving along at least a portion of the multiple first execution paths 201 and then moving along at least a portion of the multiple second execution paths 202. The laser source first moves along a portion of the first execution path 201 and then along a portion of the second execution path 202. A second execution path 202 is provided between two adjacent first execution paths 201, meaning there is at least one second execution path 202 between each preceding first execution path 201 and each subsequent execution path 201. Therefore, the movement of the laser source along the preceding and subsequent first execution paths 201 ensures that there is at least one second execution path 302 between each preceding and subsequent first beam trajectory 301, effectively preventing the accumulation of laser energy.

[0073] For example, please see Figure 5 The laser source moves along a first execution path 201, and then moves along a second execution path 202. This movement method of the laser source is easy to implement and control, and helps to reduce production difficulty and cost.

[0074] Figure 6 This is a schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application.

[0075] For example, please see Figure 6After moving along multiple first execution segments 201, the laser source then moves along multiple second execution segments 202. For example, among the multiple first execution segments 201 and multiple second execution segments 202, the laser source first moves along the first execution segments 201 one by one. After all the first execution segments 201 have been executed by the laser source (i.e., the laser source has passed through the segment), it then moves along the second execution segments 202 one by one. When the laser source moves on the multiple first execution segments 201, since the second execution segments 202 are provided between adjacent first execution segments 201, and the first light spot trajectory 301 and the second light spot trajectory 302 do not overlap, the laser source will not cause excessive concentration of laser heat when moving on adjacent first execution segments 201. This effectively avoids splitting between some film layers within the display panel 100. Figure 7 This is a schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application.

[0076] Please see Figure 3 , Figure 4 and Figure 7 In one embodiment of the present invention, the laser source moves in the opposite direction to the laser source moving in the first execution segment 201 and the second execution segment 202. This movement of the laser source allows it to move in the second execution segment 202 without having to turn back to the starting side of the first execution segment 201, and can start execution directly from the end side of the first execution segment 201. Therefore, the difficulty of controlling the movement of the laser source is reduced, and time is saved.

[0077] Figure 8 A schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application; Figure 9 This is a schematic flowchart of a laser etching method for a display panel provided in an embodiment of this application.

[0078] Please see Figure 8 and Figure 9 In one embodiment of the present invention, the minimum distance between the light spot trajectories generated by the laser source in at least two partially adjacent time periods of the execution path is greater than the maximum diameter of the laser spot generated by the laser source. The time period refers to the length of time the laser source is located on the same execution path. For example, in Figure 8 In this context, the minimum distance between the light spot trajectories generated by the execution segments executed in any two adjacent time periods is greater than the maximum diameter of the laser spot generated by the laser source. Figure 9 In some cases, the minimum distance between the light spot trajectories generated by the execution segments executed in two adjacent time periods is greater than the maximum diameter of the laser spot generated by the laser source.

[0079] This can be understood as the existence of two adjacent time periods: the earlier time period and the later time period. The laser spot trajectory generated by the execution segment performed by the laser source in the earlier time period is called the earlier laser spot trajectory, and the laser spot trajectory generated by the execution segment performed by the laser source in the later time period is called the later laser spot trajectory. Along the second direction, the minimum distance between the earlier and later laser spot trajectories is greater than the maximum diameter of the laser spot generated by the laser source. This execution method of the laser source can effectively reduce the concentration of laser energy.

[0080] Figure 10 For this application Figure 1 and Figure 2 A schematic diagram of the structure of the CC region.

[0081] Please see Figure 1 , Figure 2 and Figure 10 This application also provides a display panel 100, which includes a first region and a first electrode 110. The first electrode 110 within the first region includes a cutout portion 111. The cutout portion 111 of the first electrode 110 is formed by the method described in the foregoing embodiments. Since the cutout portion 111 of the display panel 100 is formed by the foregoing embodiments, the partial film layers within the display panel 100 will not undergo thermal expansion due to laser energy concentration during laser etching, thereby effectively preventing splitting between these film layers and ultimately ensuring the display effect and performance of the display panel 100.

[0082] Please see Figure 10 In one embodiment of the present invention, the hollow portion 111 includes a first blemish group 120 and a second blemish group 130. The first blemish group 120 includes a plurality of first blemishes 121 arranged along a first direction, and the second blemish group 130 includes a plurality of second blemishes 131 arranged along the first direction. The area of ​​the first blemishes 121 is smaller than the area of ​​the second blemishes 131. The second blemish group 130 is located between two first blemish groups 120 arranged adjacent to each other along a second direction, and the second direction intersects with the first direction.

[0083] To ensure light transmittance, the laser-etched spot imprints need to cover the hollow portion 111. However, since the laser source does not move in overlapping rows, but rather the first spot trajectory 301 and the second spot trajectory 302 do not overlap, the hollow portion 111 will have a first mark 121 and a second mark 131. Moreover, the first mark 121 and the second mark 131 are not the same. The area of ​​the second mark 131 is larger than that of the first mark, and the generation time of the second mark 131 is later than the generation time of at least part of the first mark 121.

[0084] Figure 11 For this application Figure 1 and Figure 2 A structural diagram of the CC region. Figure 12 For this application Figure 11 A cross-sectional view along the NN' direction.

[0085] Please see Figures 11 to 12 In one embodiment of this application, the display panel 100 includes: a substrate 101, a pixel definition layer 102, a common organic layer 103, a first electrode 110, and a second electrode 104, wherein the second electrode 104 is located on one side of the substrate 101, the pixel definition layer 102 is located on the side of the second electrode 104 away from the substrate 101, the common organic layer 103 is located on the side of the pixel definition layer 102 away from the substrate 101, and the first electrode 110 is located on the side of the common organic layer 103 away from the substrate 101.

[0086] During laser etching, the blemishes are located in the area where the cutout portion 111 is located and on the film layer between the first electrode 110 and the substrate 101. For example, ideally, laser etching removes part of the first electrode 110, and the blemishes are located on the common organic layer 103; however, due to process precision and error issues, during laser etching, in addition to part of the first electrode 110, part of the common organic layer 103 will be removed, and at this time the blemishes are located on the pixel definition layer 102. The display panel 100 also includes a light-emitting layer, which is located within the pixel definition layer 102 and between the first electrode 110 and the second electrode 104. The common organic layer 103 can be at least one of a hole transport layer, an electron transport layer, a hole injection layer, and an electron injection layer.

[0087] Figure 13 A schematic diagram of a blemish within a hollowed-out section provided in an embodiment of this application; Figure 14 A schematic diagram of a blemish within a hollowed-out section provided in an embodiment of this application; Figure 15 A schematic diagram of a blemish within a hollowed-out section provided in an embodiment of this application; Figure 16 This is a schematic diagram of a blemish in a hollowed-out section provided in an embodiment of this application.

[0088] Please see Figures 13 to 16In one embodiment of this application, the first mark 121 is fish-scale shaped, and the second mark 131 is crescent-shaped. For example, the edge of the first mark 121 is enclosed by at least three arcs. The edge of the second mark 131 is enclosed by two arcs. The second mark group 130 also includes a third mark 132, which is crescent-shaped and located at the end of the second mark group 130. Generally, the laser source is a point source. During laser etching, on the same execution path, the subsequent laser spot will partially cover the previous laser spot. Along the second direction, the subsequent row of laser spots will partially cover the previous row of laser spots. Therefore, after etching is completed, the marks in the mark group left by the previous row of laser spots are enclosed by at least three arcs. The marks in the mark group left by a row of laser spots that are not covered by the remaining rows after execution include crescent marks enclosed by two arcs and circular marks.

[0089] Please see Figure 13 In one embodiment of the present invention, the first blemish group 120 and the second blemish group 130 are arranged alternately along the second direction. The process of forming such blemish groups is, for example, as follows: first, an initial blemish group is formed, where the maximum distance between two adjacent initial blemish groups along the second direction is less than or equal to the diameter of the laser spot and greater than zero; then, a second blemish group 130 is formed between two adjacent initial blemish groups. Due to the coverage of the second blemish group 130, the initial blemish group becomes the first blemish group 120. A specific implementation process can be... Figure 5 or Figure 9 The method flow shown is as follows. Therefore, the accumulation of laser energy can be effectively avoided during the formation of this type of blemish.

[0090] Please see Figures 14 to 16 In one embodiment of the invention, at least two first blemish groups 120 are arranged sequentially along a second direction. The process of forming such blemish groups is, for example, to first form an initial blemish group, then form another initial blemish group on the initial blemish group, and then form another initial blemish group, thereby forming a blemish state in which at least two first blemish groups are arranged sequentially along the second direction. For example, forming... Figure 14 The process of the blemishes shown can be as follows Figure 6 The method shown forms Figure 15 The process of the blemishes shown can be as follows Figure 7 The method shown forms Figure 16 The process of the blemishes shown can be as follows Figure 8 The method shown.

[0091] Figure 17 A display device is provided as an embodiment of this application.

[0092] Please see Figure 17This application also provides a display device 400, which includes the display panel 100 provided in the aforementioned embodiments. The display device can be an electronic display device such as a mobile phone, tablet, computer, or smartwatch. The cutout portion 111 of the display panel 100 is fabricated using the methods described in the aforementioned embodiments. Therefore, during laser etching, some film layers within the display panel 100 will not experience thermal expansion due to laser energy concentration, effectively preventing splitting between these film layers and ultimately ensuring the display effect and performance of the display panel 100.

[0093] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for laser engraving a display panel, characterized in that, The display panel comprises a first region comprising a first electrode, and the laser etching method is used to etch the first electrode; the laser etching method comprises: The laser source moves along a set route to etch the first electrode; the set route comprises a plurality of execution sections, and when the laser source moves along the execution sections, the trajectory of the laser generated by the laser source is a spot trajectory; the plurality of execution sections comprise a first execution section, a second execution section and a third execution section; wherein, when the laser source moves along the first execution section, the trajectory of the laser generated by the laser source is a first spot trajectory; when the laser source moves along the second execution section, the trajectory of the laser generated by the laser source is a second spot trajectory; when the laser source moves along the third execution section, the trajectory of the laser generated by the laser source is a third spot trajectory; the first spot trajectory does not overlap with the second spot trajectory, and the first spot trajectory overlaps with the third spot trajectory; The laser source moves along the first execution section, the second execution section and the third execution section in sequence. 2.The laser engraving method of the display panel according to claim 1, wherein, The plurality of execution sections are parallel. 3.The laser engraving method of the display panel according to claim 1, wherein, The third spot trajectory overlaps with the first spot trajectory and the second spot trajectory respectively. 4.The laser etching method of the display panel according to claim 3, wherein, In addition to the first spot trajectory and the second spot trajectory, the third spot trajectory does not overlap with other spot trajectories.

5. The method of claim 1, wherein the laser engraving is performed by a laser beam having a wavelength of 1064 nm. The plurality of execution sections comprise a plurality of first execution sections, a plurality of second execution sections and a plurality of third execution sections, and the second execution section is arranged between adjacent first execution sections. 6.The laser engraving method of the display panel according to claim 5, wherein, The laser source moves along at least part of the second execution section after moving along at least part of the first execution section. 7.The laser engraving method of the display panel according to claim 6, wherein, The laser source moves along the plurality of second execution sections after moving along the plurality of first execution sections. 8.The laser engraving method of the display panel according to claim 6, wherein, The laser source moves along one second execution section after moving along one first execution section. 9.The laser engraving method of the display panel according to claim 8, characterized in that, The direction in which the laser source moves along the first execution section is opposite to the direction in which the laser source moves along the second execution section.

10. A display panel, characterized by, The display panel comprises a first region comprising a first electrode; The first electrode in the first region comprises a hollow part; The hollow part of the first electrode is prepared by the method of any one of claims 1-9.

11. The display panel of claim 10, wherein, The hollow part comprises a first spot group and a second spot group, the first spot group comprises a plurality of first spots arranged along a first direction, and the second spot group comprises a plurality of second spots arranged along the first direction; the area of the first spot is smaller than the area of the second spot; The second spot group is arranged between two first spot groups arranged adjacent along a second direction, and the second direction intersects the first direction.

12. The display panel of claim 11, wherein, The first spot group and the second spot group are alternately arranged along the second direction.

13. The display panel of claim 11, wherein, At least two first spot groups are arranged in sequence along the second direction.

14. The display panel of claim 11, wherein, The shape of the first spot is fish scale-shaped, and the shape of the second spot is crescent-shaped.

15. A display device comprising: The display device comprises the display panel of any one of claims 10-14.

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