Display panel, display motherboard and display device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-28
- Publication Date
- 2026-08-11
Smart Images
Figure CN117351838B_ABST
Abstract
Description
[Technical Field]
[0001] This application relates to the field of display technology, and in particular to a display panel, display motherboard and display device. [Background Technology]
[0002] With the development of display technology, the market demand for display panel shapes has gradually diversified. When manufacturing irregularly shaped panels, the alignment between the various film layers is particularly important. Improving the alignment accuracy is of great significance to ensuring the product yield of irregularly shaped display panels.
[0003] However, in the existing technology, there is a problem of limited space for setting alignment marks when manufacturing irregularly shaped display panels, resulting in a small number of alignment marks. This leads to a decrease in the alignment accuracy of each film layer of the display panel, which affects the performance of the display panel.
[0004] [Application Content]
[0005] In view of this, embodiments of this application provide a display panel, a display motherboard, and a display device to solve the above problems.
[0006] In a first aspect, embodiments of this application provide a display panel, including a display area and a non-display area, wherein the non-display area surrounds the display area;
[0007] The display area includes a first edge and a second edge that are connected. The first edge and the second edge form a first angle. The opening of the first angle faces the display area. The first angle is α, 0 < α < 180°, and α ≠ 90°.
[0008] The display area includes alignment marks, which are located on the side of the first edge facing the display area and on the side of the second edge facing the display area. The distance between the alignment marks and the vertex of the first included angle is within a preset range.
[0009] In one implementation of the first aspect, the minimum distance between the alignment mark and the vertex of the first included angle is L, where 0 < L < 10 μm.
[0010] In one implementation of the first aspect, the display panel includes a plurality of first angles, and the plurality of first angles includes a first sub-angle and a second sub-angle;
[0011] The display area includes at least two alignment marks, including a first alignment mark and a second alignment mark. The first alignment mark is located on the side closer to the vertex of the first sub-angle, and the second alignment mark is located on the side closer to the vertex of the second sub-angle.
[0012] In one implementation of the first aspect, the first sub-angle and the second sub-angle are not adjacent along the edge of the display area.
[0013] In one implementation of the first aspect, the display panel includes a plurality of first included angles, the plurality of first included angles including a first type of sub-angle and a second type of sub-angle, the angle of the first type of sub-angle being smaller than the angle of the second type of sub-angle;
[0014] In the display area, the alignment mark is located on the side closest to the vertex of the first type of sub-angle.
[0015] In one implementation of the first aspect, the non-display area includes a plurality of shift register units, which are arranged along the extension direction of the first edge and / or the extension direction of the second edge when the shift register units are located on the side of the non-display area facing at least one of the first edge and the second edge.
[0016] In one implementation of the first aspect, the plurality of shift register units include a plurality of first shift register units and a plurality of second shift register units, wherein the plurality of first shift register units are located on the side of the first edge facing the non-display area, and the plurality of second shift register units are located on the side of the second edge facing the non-display area;
[0017] The distance between adjacent first shift register units and second shift register units is greater than the distance between two adjacent first shift register units and greater than the distance between two adjacent second shift register units.
[0018] In one implementation of the first aspect, the alignment mark includes an intersecting first extension and a second extension, the first extension being parallel to a first edge and the second extension being parallel to a second edge.
[0019] In one implementation of the first aspect, the projection shape of the alignment mark along the thickness direction of the display panel is either an "X" shape or a "V" shape.
[0020] Secondly, embodiments of this application provide a display motherboard, including at least two display panels as provided in the first aspect.
[0021] Thirdly, embodiments of this application provide a display device, including a display panel as provided in the first aspect.
[0022] In this embodiment, the alignment mark is placed on the side of the display area near the first included angle. This makes it possible to align the alignment marks in each irregularly shaped display panel when multiple irregularly shaped display panels are fabricated simultaneously on the mother substrate. When fabricating the film layers of each irregularly shaped display panel using a mask, the alignment marks in each irregularly shaped display panel can be aligned with the mask, increasing the number of alignment marks that can be aligned with the mask. This increases the alignment accuracy between the mask and each irregularly shaped display panel, ensuring that the film layers in each irregularly shaped display panel can be accurately fabricated in their corresponding positions, improving the fabrication accuracy of each film layer in the display panel, and thus improving the product performance of the display panel. Furthermore, setting the distance between the alignment mark and the vertex of the first included angle within a preset range, i.e., placing the alignment mark in the area near the vertex of the first included angle, helps to reduce the impact of the alignment mark on the display image, thereby ensuring the display effect of the display panel. [Attached Image Description]
[0023] 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.
[0024] Figure 1 This is a plan view of a display panel provided in an embodiment of this application;
[0025] Figure 2 A plan view of yet another display panel provided in an embodiment of this application;
[0026] Figure 3 This is a schematic diagram illustrating the fabrication of a display panel according to an embodiment of this application;
[0027] Figure 4 for Figure 1 An enlarged schematic diagram of the central region a30;
[0028] Figure 5 A plan view of yet another display panel provided in an embodiment of this application;
[0029] Figure 6 A plan view of yet another display panel provided in an embodiment of this application;
[0030] Figure 7 A plan view of yet another display panel provided in an embodiment of this application;
[0031] Figure 8 This is a plan view of a display device provided in an embodiment of this application.
Detailed Implementation Methods
[0032] 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.
[0033] 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.
[0034] 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.
[0035] 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.
[0036] 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.
[0037] It should be understood that although terms such as "first," "second," etc., may be used to describe edges, sub-angles, shift register units, etc., in the embodiments of this application, these edges, sub-angles, shift register units, etc., should not be limited to these terms. These terms are only used to distinguish edges, sub-angles, shift register units, etc., from each other. For example, without departing from the scope of the embodiments of this application, a first edge may also be referred to as a second edge, and similarly, a second edge may also be referred to as a first edge.
[0038] Through meticulous and in-depth research, the applicant in this case has provided a solution to the problems existing in the prior art.
[0039] Figure 1 This is a plan view of a display panel provided in an embodiment of this application. Figure 2 This is a plan view of yet another display panel provided in an embodiment of this application. Figure 3 This is a schematic diagram illustrating the fabrication of a display panel according to an embodiment of this application.
[0040] This application embodiment provides a display panel 100, such as Figure 1 and Figure 2 As shown, the display panel 100 includes a display area A1 and a non-display area A2, with the non-display area A2 surrounding the display area A1. The display area A1 is the area used to set pixel units, and the non-display area A2 is the border of the display panel 100, which can be used to set peripheral driving circuits.
[0041] Display area A1 includes a first edge B1 and a second edge B2 that are adjacent to each other. The first edge B1 and the second edge B2 form a first angle, the opening of which faces the display area A1. The first angle is α, where 0 < α < 180° and α ≠ 90°. That is, display panel 100 is an irregularly shaped display panel.
[0042] In the first included angle a, the first edge B1 and the second edge B2 are the two sides of the first included angle a, and the point where the first edge B1 and the second edge B2 meet is the vertex a20 of the first included angle a.
[0043] Display area A1 includes alignment mark M, which is located on the side of the first edge B1 facing display area A1 and on the side of the second edge B1 facing display area A1. The distance between alignment mark M and the vertex a20 of the first included angle a is within a preset range.
[0044] In other words, an alignment mark M is set in the display area A1 of the display panel 100, and the alignment mark M is located in the area near the vertex a20 of the first included angle a.
[0045] In this embodiment of the application, the alignment mark M is set on the side of the display area A1 near the first included angle a, then as follows: Figure 3 As shown, when multiple irregularly shaped display panels 100 are fabricated simultaneously on the mother substrate C, it becomes possible to align the alignment marks M in each irregularly shaped display panel 100. When using a mask to fabricate the film layers of each irregularly shaped display panel 100, the alignment marks M in each irregularly shaped display panel can be aligned with the mask, increasing the number of alignment marks M that can be aligned with the mask. This increases the alignment accuracy between the mask and each irregularly shaped display panel 100, which helps to ensure that the film layers in each irregularly shaped display panel 100 can be accurately fabricated in the corresponding positions, improving the fabrication accuracy of each film layer in the display panel 100, and thus improving the product performance of the display panel 100.
[0046] In addition, setting the distance between the alignment mark M and the vertex a20 of the first included angle a within a preset range, that is, setting the alignment mark M in the area close to the vertex a20 of the first included angle a, helps to reduce the impact of the alignment mark M on the display screen, thereby helping to ensure the display effect of the display panel 100.
[0047] Figure 4 for Figure 1 An enlarged schematic diagram of the central region a30.
[0048] In one embodiment of this application, combined with Figure 1 and Figure 4 As shown, the minimum distance between the alignment mark M and the vertex a20 of the first included angle a is L, where 0 < L < 10 μm.
[0049] Of course, the minimum distance L is the distance between the position on the alignment mark M closest to the vertex a20 of the first included angle a and the vertex a20 of the first included angle a.
[0050] With vertex a20 as the center and radius L, the first edge B1 and the second edge B2 can form an arc region a40. The two ends of the arc of the arc region a40 are connected to the first edge B1 and the second edge B2 respectively. The position of the alignment mark M closest to the vertex a20 of the first included angle a is on the arc of the arc region a40.
[0051] In this embodiment of the application, the minimum distance between the alignment mark M and the vertex a20 of the first included angle a is set to be less than 10μm, which is beneficial to make the alignment mark M closer to the edge of the display area A1, thereby reducing the impact of the alignment mark M on the display screen.
[0052] Figure 5 This is a plan view of another display panel provided in an embodiment of this application.
[0053] In one embodiment of this application, such as Figure 1 As shown, the display panel 100 includes a plurality of first included angles a, among which a first sub-included angle a11 and a second sub-included angle a12.
[0054] The display area A1 includes at least two alignment markers M, one of which is a first alignment marker M11 and the other is a second alignment marker M12. The first alignment marker M11 is located on the side closer to the vertex a110 of the first sub-angle a11, and the second alignment marker M12 is located on the side closer to the vertex a120 of the second sub-angle a12. That is, the distance between the first alignment marker M11 and the vertex a110 of the first sub-angle a11 is within a preset range, and the distance between the second alignment marker M12 and the vertex a120 of the second sub-angle a12 is also within a preset range.
[0055] From the above analysis, we know that the first included angle 'a' can be either acute or obtuse. Therefore, the first sub-included angle 'a11' can be either acute or obtuse, and the second sub-included angle 'a12' can also be either acute or obtuse.
[0056] Optionally, such as Figure 1 As shown, both the first sub-angle a11 and the second sub-angle a12 are acute angles.
[0057] Optionally, such as Figure 5 As shown, the first sub-angle a11 is an acute angle, and the second sub-angle a12 is an obtuse angle.
[0058] Of course, in some other embodiments, the first sub-angle a11 and the second sub-angle a12 can both be obtuse angles, or the first sub-angle a11 can be an obtuse angle and the second sub-angle a12 can be an acute angle.
[0059] In this embodiment, at least two alignment marks M are provided in the display area A1. Different alignment marks M are located at different first included angles a, which helps to further increase the number of alignment marks M, thereby increasing the number of alignment marks M that can be effectively aligned in the display panel 100 and improving the alignment accuracy between the film layers of the display panel 100.
[0060] In one embodiment of this application, please continue to refer to Figure 1 Along the edge of display area A1, the first sub-angle a11 and the second sub-angle a12 are not adjacent, that is, in display area A1, the first alignment mark M11 and the second alignment mark M12 are not adjacent.
[0061] Optionally, such as Figure 1 As shown, the first sub-angle a11 and the second sub-angle a12 are set opposite to each other, and the first alignment mark M11 and the second alignment mark M12 are located on the diagonal side of the display area A1.
[0062] In this embodiment, in the display area A1 of the display panel 100, one or more angles are spaced between the first sub-angle a11 and the second sub-angle a22 along the edge of the display area A1. That is, one or more angles are spaced between the first alignment mark M11 and the second alignment mark M12. At this time, a high alignment accuracy can be achieved by using the first alignment mark M11 and the second alignment mark M12, which is beneficial to improving the alignment accuracy between the film layers of the display panel 100. In addition, the relatively dispersed distribution of the first alignment mark M11 and the second alignment mark M12 in the display area A1 is also beneficial to reducing the impact of the alignment mark M on the display effect.
[0063] In one embodiment of this application, please continue to refer to Figure 2 The display panel 100 includes multiple first included angles a, among which there are first sub-angles aa1 and second sub-angles aa2, and the angle of the first sub-angle aa1 is smaller than the angle of the second sub-angle aa2.
[0064] Optionally, the first type of sub-angle aa1 is an acute angle, and the second type of sub-angle aa2 is an obtuse angle.
[0065] In display area A1, the alignment mark M is located on the side closest to the vertex of the first type of sub-angle aa1.
[0066] It is understandable that there are multiple first included angles a along the edge of the display area A1 of the display panel 100. The angles of the different first included angles a are different. Since the first type of sub-included angle aa1 is smaller than the second type of sub-included angle aa2, the range of the second type of sub-included angle aa2 projected onto the display area A1 from the opening direction is greater than the range of the first type of sub-included angle aa1 projected onto the display area A1 from the opening direction. That is, on the side closer to the vertex of the first type of sub-included angle aa1, the range of the display area A1 is smaller.
[0067] In practical applications, although the size of the alignment mark M is small, a dark area will still be formed at the alignment mark M during display. Compared with the second type of sub-angle aa2, the display area A1 at the first type of sub-angle aa1 is smaller. In this embodiment, the alignment mark M is placed on the side close to the vertex of the first type of sub-angle aa1, which has less impact on the display effect. While improving the alignment accuracy of each film layer of the display panel 100, the display effect is also protected.
[0068] Figure 6 This is a plan view of another display panel provided in an embodiment of this application.
[0069] In one embodiment of this application, such as Figure 6 As shown, the non-display area A2 includes multiple shift register units VSR. The shift register units VSR are part of the control circuit of the display panel 100. When the shift register units VSR are located on the side of the non-display area A2 of at least one of the first edge B1 and the second edge B2, the shift register units VSR are arranged along the extension direction of the first edge B1 and / or the extension direction of the second edge B2.
[0070] Specifically, when the shift register unit VSR is located on the side of the first edge B1 facing the non-display area A2, the register unit VSR is arranged along the extension direction of the first edge B1.
[0071] When the shift register unit VSR is located on the side of the second edge B2 facing the non-display area A2, the register unit VSR is arranged along the extension direction of the second edge B2.
[0072] When some shift register units VSR are located on the side of the first edge B1 facing the non-display area A2, and some shift register units VSR are located on the side of the second edge B2 facing the non-display area A2, the shift register units VSR can be rotated and set. Some of the register units VSR are arranged along the extension direction of the first edge B1, and some of the register units VSR are arranged along the extension direction of the second edge B2.
[0073] In this embodiment, the shift register unit VSR is arranged to fit the shape of the irregular display panel 100, which can effectively utilize the space of the non-display area A2 and reduce the difficulty of fabricating the peripheral driving circuit.
[0074] In one embodiment of this application, please continue to refer to Figure 6 The multiple shift register units (VSRs) include multiple first shift register units (VSR1) and multiple second shift register units (VSR2). The multiple first shift register units (VSR1) are located on the side of the first edge B1 facing the non-display area A2, and the multiple second shift register units (VSR2) are located on the side of the second edge B2 facing the non-display area A2.
[0075] Specifically, multiple first shift registers VSR1 are arranged in the non-display area A2 along the extension direction of the first edge B1; multiple second shift registers VSR2 are arranged in the non-display area A2 along the extension direction of the second edge B2.
[0076] The distance between adjacent first shift register units VSR1 and second shift register units VSR2 is greater than the distance between two adjacent first shift register units VSR1 and greater than the distance between two adjacent second shift register units VSR2.
[0077] Understandably, the shift register unit VSR needs to be electrically connected to the signal lines in display area A1, and wiring is required on the side of the shift register unit VSR facing display area A1.
[0078] In this embodiment, the distance between the first shift register VSR1 and the second shift register VSR2 is relatively large. That is, no shift register unit VSR is set on the side of the vertex a20 of the first included angle a facing the non-display area A2. This helps to avoid the wiring of the shift register VSR facing the display area A1 from overlapping, crossing or other conflicts with the alignment mark M located at the first included angle a. This avoids the display panel 100 from experiencing line abnormalities or display abnormalities, thereby ensuring the normal operation of the shift register unit VSR and improving the product reliability of the display panel 100.
[0079] Figure 7 This is a plan view of another display panel provided in an embodiment of this application.
[0080] In one embodiment of this application, such as Figure 7 As shown, the alignment mark M includes an intersecting first extension M21 and a second extension M22. The first extension M21 is parallel to the first edge B1, and the second extension M22 is parallel to the second edge B2. The first extension M21 and the second extension M22 are connected to form the alignment mark M.
[0081] Optionally, along the thickness direction of the display panel 100, the projection shape of the alignment mark M is either an "X" shape or a "V" shape.
[0082] In this embodiment, the first extension M21 is parallel to the first edge B1, and the second extension M22 is parallel to the second edge B2. The first extension M21 and the second extension M22 can be set in the region closer to the vertex a20 of the first included angle a, which helps to further reduce the distance between the alignment mark M and the vertex a20 of the first included angle a, so that the alignment mark M is closer to the edge of the display area A1, thereby helping to reduce the impact of the alignment mark M on the display effect to a greater extent.
[0083] This application provides a display motherboard 300, such as... Figure 3 As shown, the display motherboard 300 includes at least two display panels 100 as provided in the above embodiments. In preparing the display motherboard 300, a mother substrate C is first provided, and then each film layer of the display panel 100 is sequentially prepared on the mother substrate C.
[0084] Multiple display panels 100 can be fabricated in different areas of the mother substrate C, and the same film layer in each display panel 100 can be fabricated simultaneously. Of course, after the display mother substrate 300 is fabricated, the display mother substrate 300 can be cut to obtain an individual display panel 100.
[0085] In the prior art, alignment marks for display panels are usually set in the edge area of the display panel. However, when the display panel 100 included in the display motherboard 300 is an irregularly shaped display panel, it is difficult to align the edges of the irregularly shaped display panels when arranging them on the mother substrate C. This results in fewer marks available for alignment with the mask when preparing each film layer of the display panel, and may even cause some display panels to be unable to align with the mask, seriously affecting the accuracy of the film layer preparation of the display panel and the performance of the display panel.
[0086] This application sets the alignment mark M in the display area of the display panel 100 on the side close to the first included angle a. When arranging irregularly shaped display panels on the mother substrate C, it becomes possible to align the alignment marks M in each irregularly shaped display panel. When using a mask to prepare the film layers of each display panel, the alignment marks M in each irregularly shaped display panel can be aligned with the mask, increasing the alignment accuracy between the mask and each display panel. This helps to ensure that the film layers in each irregularly shaped display panel 100 can be accurately prepared in the corresponding positions, improving the preparation accuracy of each film layer in the display panel 100, and thus improving the product performance of the display panel 100.
[0087] Figure 8 This is a plan view of a display device provided in an embodiment.
[0088] This application provides a display device 200, such as... Figure 8 As shown, the display device 200 includes the display panel 100 provided in the above embodiments. The display device 200 provided in this application embodiment can be an irregularly shaped display device. For example, the display device 200 can be an irregularly shaped vehicle display or a wearable electronic device, and this application does not make any specific limitations.
[0089] In the display device 200, if the alignment mark M is set on the side of the display area A1 near the first included angle a, then when multiple irregularly shaped display panels 100 are simultaneously fabricated on the mother substrate C, it becomes possible to align the alignment mark M in each irregularly shaped display panel 100. When using a mask to fabricate the film layer of each irregularly shaped display panel 100, the alignment mark M in each irregularly shaped display panel can be aligned with the mask, increasing the number of alignment marks M that can be aligned with the mask, thereby increasing the alignment accuracy between the mask and each irregularly shaped display panel 100. This helps to ensure that the film layer in each irregularly shaped display panel 100 can be accurately fabricated in the corresponding position, improving the fabrication accuracy of each film layer in the display panel 100, and thus improving the product performance of the display panel 100.
[0090] In addition, setting the distance between the alignment mark M and the vertex a20 of the first included angle a within a preset range, that is, setting the alignment mark M in the area close to the vertex a20 of the first included angle a, helps to reduce the impact of the alignment mark M on the display screen, thereby helping to ensure the display effect of the display panel 100.
[0091] 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 display panel, characterized in that, It includes a display area and a non-display area, wherein the non-display area surrounds the display area; The display area includes a first edge and a second edge that are adjacent to each other. The first edge and the second edge form a first angle. The opening of the first angle faces the display area. The first angle is α, where 0 < α < 180° and α ≠ 90°. The display area includes alignment marks located on the side of the first edge facing the display area and on the side of the second edge facing the display area. The minimum distance between the alignment marks and the vertex of the first included angle is L, where 0 < L < 10 μm.
2. The display panel according to claim 1, characterized in that, The display panel includes a plurality of first included angles, and the plurality of first included angles include a first sub-angle and a second sub-angle. The display area includes at least two alignment marks, of which a first alignment mark and a second alignment mark are included. The first alignment mark is located on the side closer to the vertex of the first sub-angle, and the second alignment mark is located on the side closer to the vertex of the second sub-angle.
3. The display panel according to claim 2, characterized in that, Along the edge of the display area, the first sub-angle and the second sub-angle are not adjacent.
4. The display panel according to claim 1, characterized in that, The display panel includes a plurality of first included angles, and the plurality of first included angles include a first type of sub-angle and a second type of sub-angle, wherein the angle of the first type of sub-angle is smaller than the angle of the second type of sub-angle. In the display area, the alignment mark is located on the side closest to the vertex of the first type of sub-angle.
5. The display panel according to claim 1, characterized in that, The non-display area includes a plurality of shift register units. When the shift register units are located on the side of the first edge and the second edge facing the non-display area, the shift register units are arranged along the extension direction of the first edge and / or the extension direction of the second edge.
6. The display panel according to claim 5, characterized in that, The plurality of shift register units includes a plurality of first shift register units and a plurality of second shift register units, wherein the plurality of first shift register units are located on the side of the first edge facing the non-display area, and the plurality of second shift register units are located on the side of the second edge facing the non-display area; The distance between adjacent first shift register units and second shift register units is greater than the distance between two adjacent first shift register units and greater than the distance between two adjacent second shift register units.
7. The display panel according to claim 1, characterized in that, The alignment mark includes an intersecting first extension and a second extension, the first extension being parallel to the first edge and the second extension being parallel to the second edge.
8. The display panel according to claim 7, characterized in that, Along the thickness direction of the display panel, the projection shape of the alignment mark is either "X" or "V".
9. A display motherboard, characterized in that, It includes at least two display panels as described in any one of claims 1-8.
10. A display device, characterized in that, Includes the display panel as described in any one of claims 1-8.
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