Display panel and display device

Abstract

The invention relates to a display panel and a display device, and the display panel comprises a first electrode group which is located at one side of a substrate; a light emitting element including a second electrode group; the first electrode group comprises a first electrode and a second electrode which are arranged in a first direction; the second electrode group comprises a third electrode and a fourth electrode which are arranged in the first direction, the first electrode and the third electrode are correspondingly arranged, and the second electrode and the fourth electrode are correspondingly arranged; each of the first electrode and the second electrode comprises a first end part and a second end part in the second direction, and each of the third electrode and the fourth electrode comprises a third end part and a fourth end part in the second direction; the included angle between the center line of at least one of the first electrode and the third electrode in the extending direction and the second direction is larger than or equal to 1 degree. And / or the width of the first end part of at least one of the first electrode and the second electrode is not equal to the width of the second end part. According to the invention, the yield can be improved.

Description

Technical Field

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

[0002] Micro-component technology refers to the high-density integration of arrays of tiny components on a substrate. As an emerging display technology, micro-component displays offer several advantages over liquid crystal displays (LCDs) and organic light-emitting diode (OLEDs), such as lower power consumption, wider color gamut, faster response times, and less stringent requirements for water and oxygen isolation during encapsulation. Therefore, mini light-emitting diodes (Mini LEDs) and micro light-emitting diodes (MicroLEDs) are considered highly promising display technologies.

[0003] However, the manufacturing yield of the relevant technologies still needs to be improved. Summary of the Invention

[0004] Therefore, it is necessary to provide a display panel and display device to address the issue that the manufacturing yield of related technologies still needs to be improved.

[0005] In a first aspect, embodiments of this application provide a display panel, including:

[0006] Base;

[0007] The first electrode group is located on one side of the substrate;

[0008] A light-emitting element is located on the side of the first electrode group away from the substrate. The light-emitting element includes a second electrode group located on the side of the light-emitting element facing the corresponding first electrode group.

[0009] The first electrode group includes a first electrode and a second electrode arranged in a first direction;

[0010] The second electrode group includes a third electrode and a fourth electrode arranged in the first direction, wherein the first electrode is disposed corresponding to the third electrode and the second electrode is disposed corresponding to the fourth electrode;

[0011] The first electrode and the second electrode each include a first end and a second end that are arranged opposite to each other in the second direction, and the third electrode and the fourth electrode each include a third end and a fourth end that are arranged opposite to each other in the second direction, wherein the second direction is perpendicular to the first direction;

[0012] Wherein, the centerline of at least one of the first electrode and the third electrode in its extension direction forms an angle greater than or equal to 1 degree with the second direction; and / or, the width of the first end of at least one of the first electrode and the second electrode is not equal to the width of the second end, and the width of the first end and the width of the second end are both the width of the corresponding electrode in its extension direction.

[0013] Secondly, based on the same application concept, embodiments of this application also provide a display device, which includes any of the display panels provided in the first aspect.

[0014] In this embodiment, the angle between the centerline of at least one of the first and third electrodes in its extension direction and the second direction is greater than or equal to 1 degree; and / or, the width of the first end of at least one of the first and second electrodes is not equal to the width of the second end, and the width of the first end and the width of the second end are both the width of the corresponding electrode perpendicular to its extension direction. In a first aspect, the angle between the centerline of at least one of the first and third electrodes in its extension direction and the second direction is greater than or equal to 1 degree. That is, by deflecting the centerline of at least one of the first and third electrodes in its extension direction relative to the second direction, the alignment offset tolerance of the first and third electrodes in the first direction (and possibly other directions) can be increased (ensuring the width that can be offset during electrical connection). This eliminates the need to increase the area of ​​the first and / or third electrodes, or increases the area of ​​the first and / or third electrodes only slightly. When the first and third electrodes are aligned and electrically connected (e.g., soldered), the electrical connection between the first and third electrodes can be ensured, for example, avoiding solder connection failure or short circuits, thereby improving the manufacturing yield or display quality of the display panel. Secondly, the width of the first end of at least one of the first and second electrodes is not equal to the width of the second end. For example, increasing the width of the first end of at least one of the first and second electrodes can at least increase the tolerance for misalignment between the first and second electrodes and their corresponding electrodes at the first end (ensuring the width that can be offset during electrical connection). This does not require increasing the area of ​​the first and / or second electrodes, or only slightly increases the area of ​​the first and / or second electrodes. When the first and second electrodes are electrically connected to their corresponding electrodes (e.g., by soldering), it can ensure that the first and second electrodes are electrically connected to their corresponding electrodes, such as avoiding soldering failure or short circuits, thereby improving the manufacturing yield or display quality of the display panel. Thirdly, when the second electrode group is rotated and offset relative to the first electrode group (the second electrode group rotates clockwise or counterclockwise relative to the first electrode group before offsetting), the embodiments of this application can make the first electrode and the third electrode have a larger electrical connection area, and the second electrode and the fourth electrode have a larger electrical connection area, thereby increasing the tolerance for rotational misalignment (ensuring the area of ​​the overlapping part during electrical connection). The embodiments described in this application have at least one of the beneficial effects described above. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology 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.

[0016] Figure 1 This is a schematic cross-sectional view of a display panel provided in an embodiment of this application.

[0017] Figure 2 This is a schematic diagram illustrating a first correspondence between a first electrode group and a second electrode group in a display panel, as provided in an embodiment of this application.

[0018] Figure 3 This is a schematic diagram illustrating a second correspondence between the first electrode group and the second electrode group in a display panel, as provided in an embodiment of this application.

[0019] Figure 4 This is a schematic diagram illustrating a third correspondence between the first electrode group and the second electrode group in a display panel, as provided in an embodiment of this application.

[0020] Figure 5 This is a schematic diagram illustrating a fourth correspondence between the first electrode group and the second electrode group in a display panel, as provided in an embodiment of this application.

[0021] Figure 6 This is a schematic diagram of the alignment offset when the first electrode group and the second electrode group in a display panel have a first correspondence relationship, which is provided in an embodiment of this application.

[0022] Figure 7 This is another alignment offset diagram for a first correspondence between the first electrode group and the second electrode group in a display panel provided in an embodiment of this application.

[0023] Figure 8 This is a schematic diagram showing the electrode dimensions of a first electrode group and a second electrode group in a display panel, as provided in an embodiment of this application.

[0024] Figure 9 This is a schematic diagram illustrating a fifth correspondence between the first electrode group and the second electrode group in a display panel, as provided in an embodiment of this application.

[0025] Figure 10 This is a schematic diagram illustrating a sixth correspondence between the first electrode group and the second electrode group in a display panel, provided as an embodiment of this application.

[0026] Figure 11 This is a schematic diagram illustrating a seventh correspondence between the first electrode group and the second electrode group in a display panel, provided as an embodiment of this application.

[0027] Figure 12 This is a schematic diagram showing the dimensions of another electrode in a first electrode group and a second electrode group in a display panel, as provided in an embodiment of this application.

[0028] Figure 13This is a schematic diagram of the alignment offset when the first electrode group and the second electrode group in a display panel have a fifth correspondence relationship, as provided in an embodiment of this application.

[0029] Figure 14 This is a schematic diagram of a display device provided in an embodiment of this application.

[0030] Reference numerals: display device 200; display panel 100; substrate 11; first electrode group 121; first electrode 121a; second electrode 121b; first end dd1; second end dd2; light-emitting element 20; second electrode group 22; third electrode 22a; fourth electrode 22b; third end dd3; fourth end dd4;

[0031] First direction X; Second direction Y; Third direction V; First included angle α1; Second included angle α2; First major included angle α10; Third included angle α3; Fourth included angle α4; Second major included angle α20; First offset p1; Third major included angle α30; Fourth major included angle α40; First length L1; First width d1; Second length L2; Second width d2; Drive circuit layer 12; Encapsulation function layer 13; Third width d3; Fourth width d4; Fifth width d5; Sixth width d6. Detailed Implementation

[0032] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] When describing positional relationships, unless otherwise specified, when an element, such as a layer, film, or substrate, is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements present. Furthermore, when a layer is referred to as being "below" another layer, it may be directly below it or there may be one or more intermediate elements present. It is also understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more intermediate elements present.

[0035] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0036] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0037] It should also be understood that, in interpreting an element, although not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of a particular value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0038] Furthermore, in the instruction manual, the phrase "planar distribution diagram" refers to the diagram when the target part is viewed from above, and the phrase "cross-sectional diagram" refers to the diagram when the target part is viewed from the side as a cross-section taken by vertically cutting the target part.

[0039] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0040] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0041] As described in the background section, the related technologies still have issues with improving manufacturing yield. Micro-component display panels often have very high resolution and / or semi-transparent designs, resulting in very small sizes for the first and second electrodes in the first electrode group on the substrate, and the third and fourth electrodes in the second electrode group on the light-emitting diode. When aligning and electrically connecting the first and second electrodes in the first electrode group, and the third and fourth electrodes in the second electrode group (e.g., soldering), the alignment accuracy requirements become increasingly stringent. Poor alignment accuracy can lead to poor electrical connections between the first and second electrodes in the first electrode group, and between the third and fourth electrodes in the second electrode group, such as soldering failure or short circuits, thus reducing the manufacturing yield or display quality of the display panel.

[0042] Based on the above-mentioned technical problems, the inventors have discovered that the first electrode and the third electrode are correspondingly arranged, and the second electrode and the fourth electrode are correspondingly arranged; the first electrode and the second electrode each include a first end and a second end arranged opposite to each other in the second direction, and the third electrode and the fourth electrode each include a third end and a fourth end arranged opposite to each other in the second direction, the second direction being perpendicular to the first direction; wherein, at least one of the first electrode and the third electrode has an angle greater than or equal to 1 degree between its centerline in its extension direction and the second direction; and / or, the width of the first end of at least one of the first electrode and the second electrode is not equal to the width of the second end, and the width of the first end and the width of the second end are both the width of the corresponding electrode in its extension direction perpendicular to its extension direction. Firstly, at least one of the first and third electrodes has an angle greater than or equal to 1 degree between its centerline in its extension direction and the second direction. That is, by deflecting the centerline of at least one of the first and third electrodes in its extension direction relative to the second direction, the alignment offset tolerance of the first and third electrodes in the first direction (and other directions) can be increased (ensuring the width that can be offset when electrically connected). It is not necessary to increase the area of ​​the first and / or third electrodes, or only slightly increase the area of ​​the first and / or third electrodes. When the first and third electrodes are aligned and electrically connected (e.g., solder connection), the electrical connection between the first and third electrodes can be ensured, for example, avoiding solder connection failure or short circuit, thereby improving the manufacturing yield or display quality of the display panel. Secondly, the width of the first end of at least one of the first electrode and the second electrode is not equal to the width of the second end. For example, by increasing the width of the first end of at least one of the first electrode and the second electrode, the alignment offset tolerance of the first electrode and the second electrode 121b with the corresponding electrode at the first end can be increased (ensuring the width that can be offset when electrically connected). It is not necessary to increase the area of ​​the first electrode and / or the second electrode 121b, or only slightly increase the area of ​​the first electrode and / or the second electrode 121b. When the first electrode and the second electrode 121b are electrically connected to the corresponding electrode (e.g., solder connection), it can be ensured that the first electrode and the second electrode 121b are electrically connected to the corresponding electrode, such as avoiding solder connection failure or short circuit, thereby improving the manufacturing yield or display quality of the display panel. Thirdly, when the second electrode group rotates and shifts relative to the first electrode group (the second electrode group rotates clockwise or counterclockwise relative to the first electrode group before shifting), the embodiments of this application can make the first electrode and the third electrode have a larger electrical connection area, and the second electrode and the fourth electrode have a larger electrical connection area, thereby improving the tolerance for rotational shift during alignment (ensuring the area of ​​the overlapping part during electrical connection). The embodiments of this application themselves have at least one of the above-mentioned beneficial effects.

[0043] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0044] Please see Figures 1 to 13 . Figure 1 This is a schematic cross-sectional view of a display panel provided in an embodiment of this application. Figure 2 This is a schematic diagram illustrating a first correspondence between a first electrode group and a second electrode group in a display panel, as provided in an embodiment of this application. Figure 3 This is a schematic diagram illustrating a second correspondence between the first electrode group and the second electrode group in a display panel, as provided in an embodiment of this application. Figure 4 This is a schematic diagram illustrating a third correspondence between the first electrode group and the second electrode group in a display panel, as provided in an embodiment of this application. Figure 5 This is a schematic diagram illustrating a fourth correspondence between the first electrode group and the second electrode group in a display panel, as provided in an embodiment of this application. Figure 6 This is a schematic diagram of the alignment offset when the first electrode group and the second electrode group in a display panel have a first correspondence relationship, which is provided in an embodiment of this application. Figure 7 This is another alignment offset diagram for a first correspondence between the first electrode group and the second electrode group in a display panel provided in an embodiment of this application. Figure 8 This is a schematic diagram showing the electrode dimensions of a first electrode group and a second electrode group in a display panel, as provided in an embodiment of this application.

[0045] Figure 9 This is a schematic diagram illustrating a fifth correspondence between the first electrode group and the second electrode group in a display panel, as provided in an embodiment of this application. Figure 10 This is a schematic diagram illustrating a sixth correspondence between the first electrode group and the second electrode group in a display panel, provided as an embodiment of this application. Figure 11 This is a schematic diagram illustrating a seventh correspondence between the first electrode group and the second electrode group in a display panel, provided as an embodiment of this application. Figure 12 This is a schematic diagram showing the dimensions of another electrode in a first electrode group and a second electrode group in a display panel, as provided in an embodiment of this application. Figure 13 This is a schematic diagram of the alignment offset when the first electrode group and the second electrode group in a display panel have a fifth correspondence relationship, as provided in an embodiment of this application.

[0046] It should be noted that, Figures 2 to 13The diagram illustrates the shapes and correspondences of the first and second electrodes in the first electrode group on the array substrate, and the third and fourth electrodes in the second electrode group on the light-emitting diode. For the electrical connections between the first and third electrodes, and the electrical connections between the third and fourth electrodes, please refer to [link to relevant documentation]. Figure 1 As shown.

[0047] It should be noted that, Figures 2 to 13 In the diagram, the dashed arrow indicates the second direction Y, and the dashed line segment / dashed line indicates the extension direction of the corresponding electrode.

[0048] This application provides a display panel 100, which includes a substrate 11, a first electrode group 121, and a light-emitting element 20. The first electrode group 121 is located on one side of the substrate 11; the light-emitting element 20 is located on the side of the first electrode group 121 away from the substrate 11, and the light-emitting element 20 includes a second electrode group 22, which is located on the side of the light-emitting element 20 facing the corresponding first electrode group 121. The first electrode group 121 includes a first electrode 121a and a second electrode 121b arranged in a first direction X; the second electrode group 22 includes a third electrode 22a and a fourth electrode 22b arranged in the first direction X, with the first electrode 121a corresponding to the third electrode 22a, and the second electrode 121b corresponding to the fourth electrode 22b; both the first electrode 121a and the second electrode 121b include a first end dd1 and a second end dd2 arranged opposite to each other in the second direction Y, and the third electrode 22a and the fourth electrode 22b in the second direction Y... Each electrode includes a third end dd3 and a fourth end dd4 arranged opposite to each other, with the second direction Y perpendicular to the first direction X; wherein, at least one of the first electrode 121a and the third electrode 22a has an angle greater than or equal to 1 degree between its centerline in its extension direction and the second direction Y; and / or, the width of the first end dd1 of at least one of the first electrode 121a and the second electrode 121b is not equal to the width of the second end dd2, and the width of the first end dd1 and the width of the second end dd2 are both the widths of the corresponding electrodes in their extension directions perpendicular to their extension directions.

[0049] For example, such as Figure 1As shown, the display panel 100 includes a substrate 11, a driving circuit layer 12 located on one side of the substrate 11, a plurality of light-emitting elements 20 located on the side of the driving circuit layer 12 away from the substrate 11, and an encapsulation functional layer 13 located on the side of the light-emitting elements 20 away from the substrate 11. The driving circuit layer 12 may include a plurality of pixel circuits, a plurality of scan signal lines, and a plurality of data signal lines, etc. The pixel circuit may include at least one thin-film transistor, and the pixel circuit is electrically connected to the corresponding light-emitting element 20 and drives the corresponding light-emitting element 20 to emit light. The driving circuit layer 12 may include a plurality of first electrode groups 121, and the first electrode group 121 includes a first electrode 121a and a second electrode 121b. The encapsulation functional layer 13 can protect the plurality of light-emitting elements 20. The encapsulation functional layer 13 can be an ink layer or a planarization layer, for example, the encapsulation functional layer 13 is white ink. The structure of the display panel 100 is not limited to this. For example, part of the structure of the driving circuit layer 12 is located on the same layer as the light-emitting elements 20. For example, the display panel 100 also includes a protective cover glass (CG) and other structures.

[0050] For example, the light-emitting element 20 may be a mini light-emitting diode (Mini LED) or a micro light-emitting diode (MicroLED), but is not limited thereto.

[0051] For example, the first electrode group 121 includes a first electrode 121a and a second electrode 121b arranged in the first direction X; the second electrode group 22 includes a third electrode 22a and a fourth electrode 22b arranged in the first direction X, with the first electrode 121a corresponding to the third electrode 22a, and the second electrode 121b corresponding to the fourth electrode 22b. In the display panel 100, the first electrode 121a is electrically connected to the corresponding third electrode 22a, and the second electrode 121b is electrically connected to the corresponding fourth electrode 22b. The electrical connection can be a solder connection or a bonding layer connection, but is not limited to these.

[0052] For example, the first direction X and the second direction Y are both parallel to the plane where the substrate 11 is located. The first direction X is the arrangement direction of the first electrode 121a and the second electrode 121b in the first electrode group 121. The first direction X and the second direction Y can be perpendicular to each other.

[0053] For example, in the same first electrode group 121 and the corresponding second electrode group 22, the first electrode 121a and the second electrode 121b are arranged in the first direction X, and the third electrode 22a and the fourth electrode 22b are arranged in the first direction X; however, the first electrode 121a and the second electrode 121b in different first electrode groups 121 may be arranged in the same direction or in different directions. For example, the first electrode 121a and the second electrode 121b in some first electrode groups 121 are arranged in the horizontal direction, and the first electrode 121a and the second electrode 121b in some first electrode groups 121 are arranged in the vertical direction; however, the third electrode 22a and the fourth electrode 22b in different second electrode groups 22 may be arranged in the same direction or in different directions. For example, the third electrode 22a and the fourth electrode 22b in some second electrode groups 22 are arranged in the horizontal direction, and the third electrode 22a and the fourth electrode 22b in some second electrode groups 22 are arranged in the vertical direction. That is, the first direction X and the second direction Y refer to or are directed to the same first electrode group 121 and the corresponding second electrode group 22, or the first direction X and the second direction Y refer to or are directed to a first electrode group 121 and a corresponding second electrode group 22.

[0054] For example, the first electrode 121a and the second electrode 121b both include a first end dd1 and a second end dd2 arranged opposite to each other in the second direction Y, and the third electrode 22a and the fourth electrode 22b both include a third end dd3 and a fourth end dd4 arranged opposite to each other in the second direction Y, wherein the second direction Y is perpendicular to the first direction X.

[0055] It should be noted that the second direction Y includes a first sub-direction and a second sub-direction that point in opposite directions. In this embodiment, the first end dd1 is defined as one end of the first electrode 121a and the second electrode 121b in the same sub-direction (the first sub-direction), and the second end dd2 is defined as one end of the first electrode 121a and the second electrode 121b in the same sub-direction (the second sub-direction). The first end dd1 and the third end dd3 are the ends of the corresponding electrodes on the same direction side, and the second end dd2 and the fourth end dd4 are the ends of the corresponding electrodes on the same direction side; further details will not be elaborated upon here.

[0056] For example, during electrical connection, when there is no alignment shift and the electrical connection is in the correct orientation, the first end dd1 of the first electrode 121a is electrically connected to the third end dd3 of the third electrode 22a, and the first end dd1 of the second electrode 121b is electrically connected to the third end dd3 of the fourth electrode 22b.

[0057] For example, the centerline of at least one of the first electrode 121a and the third electrode 22a in its extension direction has an angle greater than or equal to 1 degree with the second direction Y, that is, the centerline of at least one of the first electrode 121a and the third electrode 22a in its extension direction is deflected / forms an angle relative to the second direction Y.

[0058] For example, the width of the first end dd1 of at least one of the first electrode 121a and the second electrode 121b is not equal to the width of the second end dd2. The width of the first end dd1 and the width of the second end dd2 are both the widths of the corresponding electrodes in the direction perpendicular to their extension. That is, the width of the first end dd1 of at least one of the first electrode 121a and the second electrode 121b is increased, or the width of the second end dd2 of at least one of the first electrode 121a and the second electrode 121b is increased.

[0059] In this embodiment, the first electrode 121a and the third electrode 22a are correspondingly arranged, and the second electrode 121b and the fourth electrode 22b are correspondingly arranged; the first electrode 121a and the second electrode 121b each include a first end dd1 and a second end dd2 arranged opposite to each other in the second direction Y, and the third electrode 22a and the fourth electrode 22b each include a third end dd3 and a fourth end dd4 arranged opposite to each other in the second direction Y, and the second direction Y is perpendicular to the first direction X; wherein, at least one of the first electrode 121a and the third electrode 22a has an angle greater than or equal to 1 degree between its centerline in its extension direction and the second direction Y; and / or, the width of the first end dd1 of at least one of the first electrode 121a and the second electrode 121b is not equal to the width of the second end dd2, and the width of the first end dd1 and the width of the second end dd2 are both the width of the corresponding electrode in its extension direction perpendicular to its extension direction. Firstly, at least one of the first electrode 121a and the third electrode 22a has an angle greater than or equal to 1 degree between its centerline in its extension direction and the second direction Y. That is, by deflecting the centerline of at least one of the first electrode 121a and the third electrode 22a in its extension direction relative to the second direction Y, the alignment offset tolerance of the first electrode 121a and the third electrode 22a in the first direction X (and may also include other directions) can be increased (ensuring the width that can be offset when electrically connected). It is not necessary to increase the area of ​​the first electrode 121a and / or the third electrode 22a, or only slightly increase the area of ​​the first electrode 121a and / or the third electrode 22a. When the first electrode 121a and the third electrode 22a are aligned and electrically connected (e.g., soldered connection), the electrical connection of the first electrode 121a and the third electrode 22a can be ensured, for example, avoiding solder connection failure or short circuit, thereby improving the manufacturing yield or display quality of the display panel 100. Secondly, the width of the first end dd1 of at least one of the first electrode 121a and the second electrode 121b is not equal to the width of the second end dd2. For example, by increasing the width of the first end dd1 of at least one of the first electrode 121a and the second electrode 121b, the alignment offset tolerance of the first electrode 121a and the second electrode 121b with the corresponding electrode at the first end dd1 can be increased (ensuring the width that can be offset when electrically connected). It is not necessary to increase the area of ​​the first electrode 121a and / or the second electrode 121b, or only slightly increase the area of ​​the first electrode 121a and / or the second electrode 121b. When the first electrode 121a and the second electrode 121b are electrically connected to the corresponding electrode (e.g., solder connection), it can be ensured that the first electrode 121a and the second electrode 121b are electrically connected to the corresponding electrode, such as avoiding solder connection failure or short circuit, thereby improving the manufacturing yield or display quality of the display panel 100.Thirdly, when the second electrode group 22 rotates and shifts relative to the first electrode group 121 (the second electrode group 22 rotates clockwise or counterclockwise relative to the first electrode group 121 before shifting), the embodiments of this application can make the first electrode 121a and the third electrode 22a have a larger electrical connection area, and the second electrode 121b and the fourth electrode 22b have a larger electrical connection area, thereby improving the tolerance for rotational shift during alignment (ensuring the area of ​​the overlapping part during electrical connection). The application example itself has at least one of the above-mentioned beneficial effects.

[0060] In some implementations, such as Figure 2 As shown, the first electrode 121a and the third electrode 22a have a first angle α1 between their centerlines in their extension direction and the second direction Y, which is 1 to 30 degrees; the other electrode has a second angle α2 between their centerlines in their extension direction and the second direction Y, which is 1 to 30 degrees; the angle between their centerlines in their extension directions is the first major angle α10, which is equal to the sum of the first angle α1 and the second angle α2; and / or, the second electrode 121b and the fourth electrode 22b have a third angle α3 between their centerlines in their extension direction and the second direction Y, which is 1 to 30 degrees; the other electrode has a fourth angle α4 between their centerlines in their extension direction and the second direction Y, which is 1 to 30 degrees; the angle between their centerlines in their extension directions is the second major angle α20, which is equal to the sum of the third angle α3 and the fourth angle α4.

[0061] For example, such as Figures 2 to 4 As illustrated, for example, the first angle α1 between the centerline of the first electrode 121a in its extension direction and the second direction Y is 1 degree to 30 degrees, and the second angle α2 between the centerline of the third electrode 22a in its extension direction and the second direction Y is illustrated. The third angle α3 between the centerline of the second electrode 121b in its extension direction and the second direction Y is illustrated, and the fourth angle α4 between the centerline of the fourth electrode 22b in its extension direction and the second direction Y is illustrated.

[0062] For example, the first included angle α1 is between 1 degree and 30 degrees, and can be any value among 1 degree, 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, and 30 degrees. The second included angle α2 is between 1 degree and 30 degrees, and can be any value among 1 degree, 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, and 30 degrees. The third included angle α3 is between 1 degree and 30 degrees, and can be any value among 1 degree, 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, and 30 degrees. The fourth included angle α4 can be any value among 1 degree, 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, and 30 degrees.

[0063] For example, the angle between the centerlines extending in the direction of the first electrode 121a and the third electrode 22a is the first major angle α10. The first major angle α10 is equal to the sum of the first angle α1 and the second angle α2, indicating that the deflection / rotation directions of the first electrode 121a and the third electrode 22a relative to the first direction Y are opposite. Figure 2 For example, the first electrode 121a is deflected / rotated counterclockwise by a first included angle α1 relative to the first direction Y, and the third electrode 22a is deflected / rotated clockwise by a second included angle α relative to the first direction Y.

[0064] For example, the angle between the centerlines extending in the direction of the second electrode 121b and the fourth electrode 22b is the second largest angle α20. The second largest angle α20 is equal to the sum of the third angle α3 and the fourth angle α4, indicating that the deflection / rotation directions of the second electrode 121b and the fourth electrode 22b relative to the first direction Y are opposite. Figure 2 For example, the second electrode 121b is deflected / rotated clockwise by a third included angle α3 relative to the first direction Y, and the fourth electrode 22b is deflected / rotated clockwise by a fourth included angle α4 relative to the first direction Y.

[0065] For example, such as Figure 6 and Figure 7 As shown, and in combination Figure 2 and Figure 8 As shown, Figure 6 and Figure 7 These represent two extreme cases where the electrode can be offset in the first direction X while maintaining electrical connection. Since the centerline of at least one of the first electrode 121a and the third electrode 22a is deflected / rotated relative to the second direction Y in its extension direction, the alignment offset tolerance of the first electrode 121a and the third electrode 22a in the first direction X (the width that allows for offset while maintaining electrical connection) is... Figure 7 It is shown that the first offset p1) is greater than the first width of the first electrode 121a. Figure 9 In the example, the first width d1) and the alignment offset tolerance of the first electrode 121a and the third electrode 22a in the first direction X (the width that can be offset when ensuring electrical connection) are also greater than the second width d2 of the third electrode 22a. This increases the alignment offset tolerance of the first electrode 121a and the third electrode 22a in the first direction X (the width that can be offset when ensuring electrical connection). When the first electrode 121a and the third electrode 22a are aligned and electrically connected (e.g., solder connection), it is not necessary to increase the area of ​​the first electrode 121a and / or the third electrode 22a, or only slightly increase the area of ​​the first electrode 121a and / or the third electrode 22a, to ensure the electrical connection of the first electrode 121a and the third electrode 22a. For example, it avoids solder connection failure or short circuit, thereby improving the manufacturing yield or display quality of the display panel 100.

[0066] For example, such as Figure 6 and Figure 7 As shown, and in combination Figure 2 and Figure 8 As shown, the first offset p1 is greater than or equal to (d1+L1·sinα1), the length of the first electrode 121a or the second electrode 121b in its extension direction is the first length L1, and the width in the direction perpendicular to its extension direction is the first width d1.

[0067] In some implementations, such as Figure 2 As shown, the angle between the center lines extending in the direction of the first electrode 121a and the second electrode 121b is the third largest angle α30, which is equal to the sum of the first angle α1 and the third angle α3.

[0068] For example, such as Figure 2 As shown, the third included angle α30 is equal to the sum of the first included angle α1 and the third included angle α3, indicating that the deflection / rotation directions of the first electrode 121a and the second electrode 121b relative to the first direction Y are opposite. For example, Figure 2 For example, the first electrode 121a is deflected / rotated counterclockwise by a first included angle α1 relative to the first direction Y, and the second electrode 121b is deflected / rotated clockwise by a third included angle α3 relative to the first direction Y.

[0069] In some implementations, such as Figure 3 As shown, the angle between the center lines extending in the direction of the first electrode 121a and the second electrode 121b is the fourth largest angle α40, which is equal to the difference between the first angle α1 and the third angle α3.

[0070] For example, such as Figure 3 As shown, the fourth largest included angle α40 is equal to the difference between the first included angle α1 and the third included angle α3, indicating that the first electrode 121a and the second electrode 121b have the same deflection / rotation direction relative to the first direction Y. For example, Figure 3 For example, the first electrode 121a is deflected / rotated counterclockwise by a first included angle α1 relative to the first direction Y, and the second electrode 121b is deflected / rotated counterclockwise by a third included angle α3 relative to the first direction Y.

[0071] In some implementations, the first included angle α1, the second included angle α2, the third included angle α3, and the fourth included angle α4 are equal.

[0072] For example, the first included angle α1, the second included angle α2, the third included angle α3, and the fourth included angle α4 are equal, which facilitates the layout of the first electrode 121a and the second electrode 121b, the third electrode 22a, and the fourth electrode 22b, so that the first electrode 121a and the second electrode 121b, the third electrode 22a, and the fourth electrode 22b have the same alignment offset tolerance.

[0073] In some implementations, such as Figures 9 to 12 As shown, the width of the first end dd1 of the first electrode 121a is not equal to the width of the second end dd2, and the width of the first end dd1 of the second electrode 121b is not equal to the width of the second end dd2.

[0074] For example, such as Figure 9 To Figure 12 As shown, for example, increasing the width of the first end dd1 of at least one of the first electrode 121a and the second electrode 121b (or, for example, increasing the width of the second end dd2 of at least one of the first electrode 121a and the second electrode 121b) can at least increase the alignment offset tolerance of the first electrode 121a and the third electrode 22a at the first end dd1 (ensuring the width that can be offset during electrical connection). When the first electrode 121a and the second electrode 121b are respectively aligned and electrically connected to their corresponding electrodes (e.g., solder connection), it is not necessary to increase the area of ​​the first electrode 121a and / or the second electrode 121b, or the area of ​​the first electrode 121a and / or the second electrode 121b is increased only slightly, to ensure that the first electrode 121a and the second electrode 121b are respectively electrically connected to their corresponding electrodes. For example, this avoids solder connection failure or short circuit, thereby improving the manufacturing yield or display quality of the display panel 100. The application example itself has at least one of the above-mentioned beneficial effects.

[0075] For example, such as Figure 13 As shown, when the second electrode group 22 rotates and shifts relative to the first electrode group 121 (the second electrode group 22 rotates clockwise or counterclockwise relative to the first electrode group 121 before shifting), the electrodes in the second electrode group 22 and / or the first electrode group 121 have increased area or protrusions in the third direction V. Figures 9 to 12 The example can be further increased / ensured to have a larger electrical connection area between the first electrode 121a and the third electrode 22a, and a larger electrical connection area between the second electrode 121b and the fourth electrode 22b, thereby improving the tolerance for rotational offset during alignment (ensuring that the areas can be directly opposite each other when electrically connected).

[0076] It should be noted that, Figures 2 to 13 All examples can improve the tolerance for normal alignment offsets (non-rotation offsets), and all can improve the tolerance for rotation offsets. Further details will not be elaborated here.

[0077] In some implementations, such as Figure 9 As shown, the width of the first end dd1 of the first electrode 121a is less than the width of the second end dd2, the width of the first end dd1 of the second electrode 121b is greater than the width of the second end dd2, the width of the third end dd3 of the third electrode 22a is less than the width of the fourth end dd4, and the width of the third end dd3 of the fourth electrode 22b is greater than the width of the fourth end dd4. The widths of the third end dd3 and the fourth end dd4 are both the widths of the corresponding electrodes in the direction perpendicular to their extension.

[0078] For example, such as Figure 9 As shown, in the first electrode group 121, the width of the first end dd1 of the first electrode 121a is smaller than the width of the second end dd2, and the width of the first end dd1 of the second electrode 121b is larger than the width of the second end dd2. That is, in the second direction Y, in the same first electrode group 121, the widened ends of the first electrode 121a and the second electrode 121b are located at different ends (different sub-direction sides), which can facilitate further increasing the width of the widened portion and help with layout arrangement; at the same time, it can at least help increase the alignment offset tolerance in the third direction V (ensuring the width that can be offset during electrical connection). The third direction V intersects both the first direction X and the second direction Y. For example, the angle between the third direction V and the first direction X is 45 degrees, and the third direction V is parallel to the plane where the substrate 11 is located.

[0079] For example, such as Figure 9 As shown, the width of the third end dd3 of the third electrode 22a is smaller than the width of the fourth end dd4, and the width of the third end dd3 of the fourth electrode 22b is larger than the width of the fourth end dd4. That is, in the second direction Y, in the same second electrode group 22, the widened ends of the third electrode 22a and the fourth electrode 22b are located at different ends (different sub-direction sides), which can facilitate further increasing the width of the widened part and help with the layout; at the same time, it can at least help increase the alignment offset tolerance in the third direction V (ensuring the width that can be offset when electrically connected).

[0080] In some implementations, such as Figure 10 As shown, the width of the first end dd1 of the first electrode 121a is less than the width of the second end dd2, the width of the first end dd1 of the second electrode 121b is less than the width of the second end dd2, the width of the third end dd3 of the third electrode 22a is less than the width of the fourth end dd4, and the width of the third end dd3 of the fourth electrode 22b is less than the width of the fourth end dd4. The widths of the third end dd3 and the fourth end dd4 are both the widths of the corresponding electrodes in the direction perpendicular to their extension.

[0081] For example, such as Figure 10 As shown, the width of the first end dd1 of the first electrode 121a is smaller than the width of the second end dd2, and the width of the first end dd1 of the second electrode 121b is smaller than the width of the second end dd2. That is, in the second direction Y, in the same first electrode group 121, the widened ends of the first electrode 121a and the second electrode 121b are located at the same end, which can at least help to improve the alignment offset tolerance in the third direction V (ensuring the width that can be offset when electrically connected).

[0082] For example, such as Figure 9 As shown, the width of the third end dd3 of the third electrode 22a is smaller than the width of the fourth end dd4, and the width of the third end dd3 of the fourth electrode 22b is smaller than the width of the fourth end dd4. That is, in the second direction Y, in the same second electrode group 22, the widened ends of the third electrode 22a and the fourth electrode 22b are located at the same end, which can at least help to improve the alignment offset tolerance in the third direction V (ensuring the width that can be offset when electrically connected).

[0083] In some implementations, such as Figures 9 to 13 As shown, in the first electrode group 121a and the second electrode group 22 arranged opposite to each other, any electrode whose width of the first end dd1 is not equal to the width of the second end dd2 is trapezoidal. The electrodes are trapezoidal, for example, both the first electrode 121a and the second electrode 121b are trapezoidal, and the regular shape of the electrodes is conducive to the layout arrangement.

[0084] It should be noted that, in Figures 2 to 13 The example illustrates different electrode arrangements. In the actual manufacturing process of the display panel 100, different products may have different arrangements of the first electrode group 121 and / or the second electrode group 22. For example, different electrode groups may be arranged in different directions, or two electrodes in different electrode groups may be arranged in different directions. Furthermore, different products may have different electrode group sizes and / or electrode sizes, which can be determined according to the requirements of the display panel 100. Figures 2 to 13 The selected designs all possess improved tolerance for alignment misalignment in at least one direction (ensuring the width that can be offset during electrical connection), thereby preventing solder joint failures or short circuits and improving the manufacturing yield or display quality of the display panel 100. For example, in a product or a product line, if the display panel 100 is prone to alignment misalignment in the first direction X, the following designs can be selected. Figures 2 to 7 Example electrode design. For instance, in a product or product line, the display panel 100 is prone to alignment misalignment in the third direction V, and an electrode design can be selected... Figures 9 to 12 Example electrode design.

[0085] It should be noted that the display panel 100 includes tens of thousands, or even hundreds of thousands or millions of light-emitting elements 20. When the display panel 100 experiences alignment or rotational misalignment, it may be due to poor electrical connection of multiple light-emitting elements 20 at different positions on the entire surface, or it may be due to poor electrical connection of light-emitting elements 20 in a certain local area. Poor electrical connection is not only caused by alignment misalignment, but may also be caused by position / shape / area errors of the first electrode 121a and the second electrode 121b in the first electrode group 121, or by position / shape / area errors of the third electrode 22a and the fourth electrode 22b in the second electrode group 22. Through the embodiments of this application, poor electrical connection caused by different reasons can be improved or resolved.

[0086] It should be noted that, as Figure 8 As shown, combined with Figures 2 to 7 As shown, the first electrode 121a or the second electrode 121b has a length of a first length L1 in its extension direction and a width of a first width d1 perpendicular to its extension direction; the third electrode 22a or the fourth electrode 22b has a length of a second length L2 in its extension direction and a width of a second width d2 perpendicular to its extension direction. The first length L1 is greater than the second length L2, and / or the second width d2 is greater than the first width d1. For example, the difference between the first length L1 and the second length L2 is any value between 2µm and 8µm. In the event of alignment misalignment, the alignment misalignment tolerance can be further increased (ensuring the width that can be offset during electrical connection). Figure 2 The example can not only increase the alignment offset tolerance in the first direction X, but also increase the alignment offset tolerance in the third direction V, etc.

[0087] It should be noted that, as Figure 12 As shown, combined with Figures 9 to 11 As shown, the length of the first electrode 121a or the second electrode 121b in its extending direction is a first length L1, the width at the narrower end perpendicular to its extending direction is a third width d3, and the width at the wider end is a fourth width d4; the length of the third electrode 22a or the fourth electrode 22b in its extending direction is a second length L2, the width at the narrower end perpendicular to its extending direction is a fifth width d5, and the width at the wider end is a sixth width d6. The first length L1 is greater than the second length L2, and / or the second width d2 is greater than the first width d1. For example, the difference between the first length L1 and the second length L2 is any value between 2µm and 8µm. In the event of alignment misalignment, the alignment misalignment tolerance (ensuring the width that can be offset during electrical connection) can be further increased. Figure 9 The example can not only increase the alignment offset tolerance on the third direction V, but also increase the alignment offset tolerance on the first direction X, etc.

[0088] See Figure 14 , Figure 14 This is a schematic diagram of a display device provided in an embodiment of this application.

[0089] Secondly, based on the same concept, this application also provides a display device 200, which includes a display panel 100 of any of the above features, or a display panel 100 that combines any of the above features.

[0090] For example, the display device 200 also has the beneficial effects of the display panel 100 in the above embodiments. The similarities can be understood with reference to the explanation of the display panel 100 above, and will not be repeated below.

[0091] For example, the display device 200 provided in the embodiments of this application can be Figure 14 The vehicle shown can also be any electronic product with display function, including but not limited to the following categories: television, laptop, desktop monitor, tablet, digital camera, smart bracelet, smart glasses, mobile phone, vehicle display, industrial control equipment, medical display screen, touch interactive terminal, etc., and this application embodiment does not make any special limitation in this regard.

[0092] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, characterized in that, include: Base; The first electrode group is located on one side of the substrate; A light-emitting element is located on the side of the first electrode group away from the substrate. The light-emitting element includes a second electrode group located on the side of the light-emitting element facing the corresponding first electrode group. The first electrode group includes a first electrode and a second electrode arranged in a first direction; The second electrode group includes a third electrode and a fourth electrode arranged in the first direction, wherein the first electrode is disposed corresponding to the third electrode and the second electrode is disposed corresponding to the fourth electrode; The first electrode and the second electrode each include a first end and a second end that are arranged opposite to each other in the second direction, and the third electrode and the fourth electrode each include a third end and a fourth end that are arranged opposite to each other in the second direction, wherein the second direction is perpendicular to the first direction; Wherein, the centerline of at least one of the first electrode and the third electrode in its extension direction forms an angle greater than or equal to 1 degree with the second direction; and / or, the width of the first end of at least one of the first electrode and the second electrode is not equal to the width of the second end, and the width of the first end and the width of the second end are both the width of the corresponding electrode in its extension direction.

2. The display panel according to claim 1, characterized in that, The first electrode and the third electrode have a first angle of 1 to 30 degrees between their centerlines in their extending direction and the second direction; the other electrode has a second angle of 1 to 30 degrees between its centerline in its extending direction and the second direction; the angle between their centerlines in their extending directions is a first major angle, which is equal to the sum of the first angle and the second angle; and / or, The centerline of one of the second electrode and the fourth electrode in its extension direction has a third angle of 1 to 30 degrees with the second direction; the centerline of the other electrode in its extension direction has a fourth angle of 1 to 30 degrees with the second direction; the angle between the centerlines in their extension directions is the second largest angle, which is equal to the sum of the third angle and the fourth angle.

3. The display panel according to claim 2, characterized in that, The angle between the centerlines extending in the direction of the first electrode and the second electrode is the third largest angle, which is equal to the sum of the first angle and the third angle.

4. The display panel according to claim 3, characterized in that, The angle between the centerlines extending in the direction of the first electrode and the second electrode is the fourth major angle, which is equal to the difference between the first angle and the third angle.

5. The display panel according to claim 3 or 4, characterized in that, The first included angle, the second included angle, the third included angle, and the fourth included angle are equal.

6. The display panel according to any one of claims 1 to 4, characterized in that, The width of the first end of the first electrode is not equal to the width of the second end, and the width of the first end of the second electrode is not equal to the width of the second end.

7. The display panel according to claim 6, characterized in that, The width of the first end of the first electrode is less than the width of the second end, the width of the first end of the second electrode is greater than the width of the second end, the width of the third end of the third electrode is less than the width of the fourth end, the width of the third end of the fourth electrode is greater than the width of the fourth end, and the widths of the third end and the fourth end are both the widths of the corresponding electrodes perpendicular to their extension direction.

8. The display panel according to claim 6, characterized in that, The width of the first end of the first electrode is less than the width of the second end, the width of the first end of the second electrode is less than the width of the second end, the width of the third end of the third electrode is less than the width of the fourth end, and the width of the third end of the fourth electrode is less than the width of the fourth end. The widths of the third end and the fourth end are both the widths of the corresponding electrodes in the direction perpendicular to their extension.

9. The display panel according to claim 1, characterized in that, In the first electrode group and the second electrode group arranged opposite to each other, any electrode whose width at the first end is not equal to the width at the second end is trapezoidal.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 9.

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