Display panel, method for measuring box deviation, and display device

Abstract

This disclosure provides a display panel, a method for measuring cell alignment deviation, and a display device, belonging to the field of display technology. It aims to improve the accuracy of cell alignment deviation detection. The display panel includes a first substrate and a second substrate, comprising a display area and a non-display area. At least one marking area is provided in the non-display area, and the marking area includes at least one set of cell alignment marks. The set of cell alignment marks is used to detect cell alignment deviation in a preset direction. The set of cell alignment marks includes a first cell alignment mark disposed on the side of the first substrate near the second substrate and in a comb-like shape, and a second cell alignment mark disposed on the side of the second substrate near the first substrate and in a comb-like shape. The comb teeth of the first cell alignment mark face the second cell alignment mark, and the comb teeth of the second cell alignment mark face the first cell alignment mark. The length direction of the comb teeth is perpendicular to the preset direction.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display panel, a method for measuring cell misalignment, and a display device. Background Technology

[0002] Liquid crystal displays (LCDs) control the amount of light passing through the liquid crystal layer by controlling the rotation direction and angle of liquid crystal molecules, thereby displaying images of various grayscale levels. They have advantages such as high image quality, small size, and light weight, and are widely used in products such as mobile phones, laptops, televisions, and monitors.

[0003] Liquid crystal displays (LCDs) are formed by assembling an array substrate and a color filter substrate (color filter) into a cell and injecting liquid crystal into them. The main manufacturing processes include the color filter process, the array process, and the cell assembly process. During the cell assembly process between the array substrate and the color filter substrate, misalignment is unavoidable, and this misalignment affects the product quality of the LCD. In practice, precise measurement of the cell assembly misalignment is necessary. Summary of the Invention

[0004] This disclosure provides a display panel, including: a first substrate and a second substrate;

[0005] The display panel includes a display area and a non-display area. At least one marking area is provided in the non-display area. The marking area includes at least one set of matching marks. The set of matching marks is used to detect matching deviation in a preset direction.

[0006] The box-matching marking group includes: a first box-matching marking disposed on the side of the first substrate near the second substrate and in a comb-like shape, and a second box-matching marking disposed on the side of the second substrate near the first substrate and in a comb-like shape.

[0007] Wherein, the comb teeth of the first pair of box marks face the second pair of box marks, and the comb teeth of the second pair of box marks face the first pair of box marks, and the length direction of the comb teeth is perpendicular to the preset direction.

[0008] In one alternative example, the non-display area further includes a border area, the border area including a sub-border area located on at least one side of the display area;

[0009] Among them, multiple of the marked areas are located in all or part of the sub-border area.

[0010] In an optional example, the non-display area further includes a border area, the border area including a sub-border area located on one side of the display area, the sub-border area including at least two marking areas, and the at least two marking areas are disposed near two different sides of the sub-border area, the two different sides being disposed opposite to each other in the extending direction of the sub-border area;

[0011] Among them, at least two of the marked areas are used to detect the box alignment deviation in two mutually perpendicular preset directions.

[0012] In one optional example, the marking area includes at least one pair of box marking groups, which includes a first pair of box marking groups and / or a second pair of box marking groups; the preset direction corresponding to the first pair of box marking groups is a first direction, and the preset direction corresponding to the second pair of box marking groups is a second direction;

[0013] Wherein, the first direction and the second direction are two directions that are perpendicular to each other.

[0014] In an optional example, the non-display area further includes a border area, the border area including a sub-border area located on at least one side of the display area, and the at least one marking area is located in at least one of the sub-border areas;

[0015] In the third pair of box marker groups, the first pair of box markers and the second pair of box markers include a plurality of continuous comb teeth.

[0016] The preset direction corresponding to the third pair of box markers is parallel to the extension direction of the sub-border area.

[0017] In an optional example, the non-display area further includes a border area, the border area including a sub-border area located on one side of the display area, and the at least one marking area is entirely located in the sub-border area;

[0018] The fourth pair of box markers in the plurality of box marker groups includes: a plurality of sub-box marker groups arranged at intervals along the extension direction of the sub-border area, wherein the plurality of sub-box marker groups are obtained by segmenting the comb teeth of the first pair of box markers and the comb teeth of the second pair of box markers;

[0019] The preset direction corresponding to the fourth pair of box markings is perpendicular to the extension direction of the sub-border area.

[0020] In one optional example, the tooth width of the comb teeth in the first pair of box markings is greater than or equal to 5 μm; the tooth width of the comb teeth in the second pair of box markings is greater than or equal to 5 μm.

[0021] In an optional example, the spacing between the multiple comb teeth in the first pair of box marks is equal, and the multiple comb teeth have the same size;

[0022] In the second pair of box markings, the spacing between the multiple comb teeth is equal, and the multiple comb teeth have the same size.

[0023] In one alternative example, the first spacing between any two adjacent comb teeth in the first pair of box marks is greater than or equal to 5 μm; and the second spacing between any two adjacent comb teeth in the second pair of box marks is greater than or equal to 5 μm.

[0024] In one alternative example, the value of the first interval distance may be the same as or different from the value of the second interval distance.

[0025] In an optional example, the value of the first interval distance is not equal to the value of the second interval distance; the box pair mark group further includes: a plurality of scale marks; the plurality of scale marks are located on the side of the first box pair mark away from the second box pair mark, or on the side of the second box pair mark away from the first box pair mark;

[0026] Wherein, two adjacent scale marks pass through at least two comb teeth, and the difference between the scale marks of two adjacent scale marks is the product of the difference between the first interval distance and the second interval distance and the number of comb teeth.

[0027] In one alternative example, the first interval distance is different from the second interval distance, and the difference between the first interval distance and the second interval distance is greater than or equal to 0.2 μm and less than or equal to 2 μm.

[0028] In one alternative example, the orthographic projection of the comb teeth in the first pair of box marks onto the second substrate overlaps with the comb teeth portion in the second pair of box marks.

[0029] In one alternative example, the overlapping region has a dimension greater than or equal to 2 μm in the length direction of the comb teeth, and is less than the length of the comb teeth.

[0030] In one alternative example, the first substrate is an array substrate; wherein the first pair of cell markers is disposed in the same layer as the metal film layer in the array substrate that is furthest from the second substrate.

[0031] In one optional example, the second substrate is a color filter substrate; wherein the second cell marker is disposed in the same layer as the black matrix film layer of the color filter substrate.

[0032] In one alternative example, the color of the first pair of box markers is different from the color of the second pair of box markers.

[0033] This disclosure also provides a method for measuring cell deviation, applied to the aforementioned display panel, the measurement method comprising:

[0034] The alignment of the comb teeth between the first pair of box marks and the second pair of box marks is detected;

[0035] Based on the detection results, the cell alignment deviation between the first substrate and the second substrate.

[0036] In one optional example, the cell alignment deviation between the first substrate and the second substrate based on the detection result includes:

[0037] In the first pair of box marks and the second pair of box marks, the target comb teeth that are fully aligned are determined;

[0038] The alignment deviation is determined based on the scale value corresponding to the target scale mark.

[0039] This disclosure also provides a display device, including the aforementioned display panel.

[0040] The display panel provided in this disclosure includes a first substrate and a second substrate; wherein at least one marking area is provided in a non-display area, the marking area includes at least one set of matching marks, the set of matching marks is used to detect matching deviation in a preset direction; the set of matching marks includes a first matching mark disposed on the side of the first substrate near the second substrate and in the shape of a comb, and a second matching mark disposed on the side of the second substrate near the first substrate and in the shape of a comb; and the comb teeth of the first matching mark face the second matching mark, the comb teeth of the second matching mark face the first matching mark, and the length direction of the comb teeth is perpendicular to the preset direction.

[0041] Since each pairing mark group of this disclosure includes a comb-shaped first pairing mark on the first substrate and a comb-shaped second pairing mark on the second substrate, with the comb teeth of the first and second pairing marks facing each other, the alignment of the comb teeth of the first and second pairing marks can be used to determine the alignment deviation of the first and second substrates in a predetermined direction. Furthermore, because the comb teeth have a relatively fine morphology, their spatial layout is highly flexible. When using comb teeth as alignment marks and utilizing comb tooth alignment as a measurement of alignment deviation, the space occupied by the comb teeth in the bezel area of ​​the display panel can be reduced. Therefore, it can be applied to display panels with narrow bezels or few bezels, such as display panels with only one bezel.

[0042] The above description is merely an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure are described below. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the dimensions and shapes of the figures in the drawings do not reflect actual proportions and are only intended to illustrate the content of the present invention. The same or similar reference numerals in the drawings represent the same or similar elements or elements having the same or similar functions.

[0044] Figure 1 A schematic diagram illustrating the location of the box marker in the related art is shown.

[0045] Figure 2 A schematic top view of a first substrate in a display panel according to an embodiment of the present disclosure is shown.

[0046] Figure 3 A schematic top view of a second substrate in a display panel according to an embodiment of the present disclosure is shown.

[0047] Figure 4 The diagram schematically illustrates a top view of the display panel obtained after the first substrate and the second substrate are assembled in this disclosure.

[0048] Figure 5a A schematic top view of the display panel shown in Example A of this disclosure is illustrated.

[0049] Figure 5b A schematic top view of the display panel shown in Example B of this disclosure embodiment is illustrated.

[0050] Figure 5c A schematic top view of the display panel shown in Example C of this disclosure embodiment is illustrated.

[0051] Figure 5d A schematic top view of the display panel shown in Example D of an embodiment of this disclosure is illustrated.

[0052] Figure 5e A schematic top view of the display panel shown in Example E of this disclosure embodiment is illustrated.

[0053] Figure 6a This schematically illustrates a top view of the display panel when the box marking groups are segmented in the lateral direction.

[0054] Figure 6b A schematic top view of the display panel is shown when the box marking groups are segmented in the longitudinal direction;

[0055] Figure 7 A schematic top view of the box alignment mark group for detecting box alignment deviation in the lateral direction is shown.

[0056] Figure 8 A schematic diagram illustrating the principle of measuring box deviation in one scenario is shown.

[0057] Figure 9 A schematic top view of a box marking group with scale markings is shown;

[0058] Figure 10 The direction of measuring cell offset of the display panel according to this disclosure is schematically shown;

[0059] Explanation of reference numerals in the attached figures:

[0060] 100, First substrate; 101, First display area; 102, First border area; 103, First box pair mark; 200, Second substrate; 201, Second display area; 202, Second border area; 203, Second box pair mark; 300, Marking area; 400, Display panel; 401, Display area; 402, Border area; 403, Box pair mark group; 4021, First sub-border area; 4022, Second sub-border area; 4023, Third sub-border area; 4024, Fourth sub-border area; 500, Scale mark. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0062] In related technologies, alignment marks are typically set in the LCD display to measure alignment deviation. However, with the development of display devices and the increasing demand for aesthetically pleasing displays, more and more narrow-bezel devices have emerged. These devices are mostly borderless products on three or even four sides. As a result, the space available for alignment marks is becoming smaller and smaller. In practice, it is necessary to abandon the measurement of alignment deviation in one direction to cope with the limited space of display devices.

[0063] In related technologies, alignment marks are typically placed at the edge of the panel where the array substrate and color filter substrate overlap. For example, on the left and right sides and in the middle of the bonding side (also known as the DP side, Data Pad) of the display side, where there is no interference with the drive signal. These alignment marks are generally rectangular frames set on the border of the display device. However, the size of the rectangle is usually relatively large. For example, a large rectangle needs to be marked on the array substrate, and a small rectangle or rectangles of the same size need to be marked on the color filter substrate. The alignment deviation is determined based on the positional relationship between the two rectangles. In this case, if there is insufficient space at the edge, it is not possible to set up a rectangular frame.

[0064] Reference Figure 1 The diagram shows a schematic representation of the location of the box marker in the related art. Figure 1 Taking a Gate GOA type display panel as an example, the display panel includes a display area and a border area surrounding the display area. In the direction of looking down at the display panel, the border area includes a horizontally bound side DP and an unbound side DPO (Data Pad Opposite) opposite to the bound side. The area on the bound side is bound with a data driving circuit, while the area on the bound side is not bound with a data driving circuit includes a left area E on the left, a right area F on the right, and a middle area G in the middle. Rectangular box-shaped markings can be set in the left area E, the right area F, and the middle area G.

[0065] However, because it is a narrow-bezel display panel, the non-bonded side and the left and right sides near the display area (the vertical area of ​​the bezel) lack a black vinyl frame, making it unsuitable for setting alignment marks. Furthermore, the rectangular frame is relatively large, so alignment marks can only be set in the horizontal direction to detect alignment deviations there, while neglecting to measure alignment deviations in the vertical direction. Consequently, for display panels where edge aesthetics are important, such as 3- or even 4-sided borderless products, the detection of alignment deviations in one dimension is lacking. This results in weaker monitoring of alignment deviations and a lower level of product quality assurance.

[0066] Of course, the above Figure 1This only exemplifies the situation where the detection of alignment deviation in the vertical direction is lacking in related technologies. In reality, for different types of display panels, there are also situations where the detection of alignment deviation in the horizontal direction is lacking. In short, for display panels with limited space in the bezel area, how to set alignment marks to detect alignment deviation from multiple dimensions is a major problem currently facing the industry.

[0067] In view of this, this disclosure proposes a novel design for the alignment mark. The main concept is to design the alignment mark as a comb-shaped mark. The comb teeth of the alignment mark on the first substrate 100 and the second substrate 200 of the display panel 400 face each other, thereby measuring the alignment deviation by means of the alignment of the comb teeth. That is, the alignment deviation in a corresponding preset direction can be measured by the facing direction of the comb teeth of the two alignment marks. Since the comb teeth have a relatively fine shape, their spatial layout is more flexible. Even in the case of limited space, the purpose of measuring the alignment deviation in multiple preset directions can be achieved by setting comb teeth with different orientations. This reduces the space occupied by the alignment mark on the bezel area 402 of the display panel 400, making it suitable for display panels 400 with narrow bezels or few bezels, such as display panels 400 with only one bezel.

[0068] Reference Figure 2 , Figure 3 and Figure 4 As shown, Figure 2 This diagram shows a top view of the first substrate 100 in a display panel 400 according to an embodiment of the present disclosure. Figure 3 This diagram shows a top view of the second substrate 200 in a display panel 400 according to an embodiment of the present disclosure. Figure 4 A schematic diagram showing the first substrate 100 and the second substrate 200 after being assembled in a box is presented from a top view. Figures 2-4 As shown, the display substrate in this embodiment includes: a first substrate 100 and a second substrate 200;

[0069] The display panel 400 includes a display area and a non-display area. At least one marking area 300 is provided in the non-display area. The marking area 300 includes at least one pairing mark group 403. The pairing mark group 403 is used to detect pairing deviation in a preset direction.

[0070] The box marking group 403 includes: a first box marking 103 disposed on the side of the first substrate 100 near the second substrate 200 and in a comb-like shape, and a second box marking 203 disposed on the side of the second substrate 200 near the first substrate 100 and in a comb-like shape.

[0071] The comb teeth of the first pair of box marks 103 face the second pair of box marks 203, the comb teeth of the second pair of box marks 203 face the first pair of box marks 103, and the length direction of the comb teeth is perpendicular to the preset direction.

[0072] In this embodiment, the display panel 400 includes a first substrate 100 and a second substrate 200. The first substrate 100 may be an array substrate, and the second substrate 200 may be a color filter substrate, or the first substrate 100 may be a color filter substrate, and the second substrate 200 may be an array substrate. The first substrate 100 and the second substrate 200 can be obtained by fabricating corresponding structural layers according to their respective process technologies. After obtaining the first substrate 100 and the second substrate 200, they can proceed to the cell alignment process, such as the color filter substrate and the array substrate undergoing alignment film coating, friction alignment, liquid crystal pre-dispensing (ODF), cell alignment, and cutting processes, ultimately forming a display panel 400 of a certain size.

[0073] The first substrate 100 includes a first display area 101 and a non-display area adjacent to the first display area 101. The non-display area includes a first border area 102. The second substrate 200 may include a second display area 201 and a non-display area adjacent to the second display area 201. The non-display area includes a second border area 202. After the first substrate 100 and the second substrate 200 are assembled, the first display area 101 corresponds to the second display area 201. Specifically, the orthographic projection of the first display area 101 on the second substrate 200 may overlap with the second display area 201. The orthographic projection of the first border area 102 on the second substrate 200 may overlap with the second border area 202. Alternatively, the orthographic projection of the first border area 102 on the second substrate 200 may overlap with the second border area 202.

[0074] Of course, in some embodiments, the non-display area may also include a transition area. Specifically, the transition area is located between the border area and the display area and is used to transition from the border area to the display area.

[0075] After the first substrate 100 and the second substrate 200 are assembled, the first display area 101 and the second display area 201 are opposite each other, forming the display area 401 of the display panel 400. The first border area 102 and the second border area 202 are opposite each other, forming the border area 402 of the display panel 400. The border area 402 is generally used for laying data lines and signal lines; the display area 401 is used for displaying images.

[0076] In some examples, the border area 402 can surround the display area 401, meaning that the display area 401 is surrounded by the border area 402 on all four sides. Alternatively, the border area 402 can surround a portion of the display area 401, meaning that the border area 402 is set adjacent to a portion of the display area 401. For example, for a 1-3 borderless display panel 400, the border area 402 is only on one side of the display area 401.

[0077] At least one marking area 300 is provided in the non-display area. Specifically, it can be set in the border area 402 of the non-display area. When there are multiple marking areas 300, the multiple marking areas 300 can be spaced apart from each other. All of the marking areas 300 can be located on the DP side of the border area 402, or all of them can be located on the non-DP side of the border area 402, or some of the marking areas 300 can be located on the DP side of the border area 402, and other marking areas 300 can be located on the non-DP side of the border area 402. Specifically, there is no limitation here.

[0078] The marking area 300 is used to set the cassette markers. Each marking area 300 can be set with one or more cassette marker groups 403. It should be noted that the first cassette marker 103 on the first substrate 100 and the second cassette marker 203 on the second substrate 200 together form a cassette marker group 403. A cassette marker group 403 is used to detect the cassette misalignment in a preset direction.

[0079] In some examples, a marking area 300 may contain multiple matching marker groups 403. Different matching marker groups 403 can be used to detect matching deviations in different preset directions. In this case, the length direction of the comb teeth in different matching marker groups 403, i.e., the orientation of the comb teeth, is different. For example, from the perspective of the display area of ​​the display panel 400 viewed from above, the preset direction may include both horizontal and vertical directions. Then, two matching marker groups 403 can be set in a marking area 300. In one matching marker group 403, the comb teeth of the first matching marker 103 and the second matching marker 203 are oriented vertically to detect matching deviations in the horizontal direction; in the other matching marker group 403, the comb teeth of the first matching marker 103 and the second matching marker 203 are oriented horizontally to detect matching deviations in the vertical direction.

[0080] In some other examples, such as Figure 2 , Figure 3 and Figure 4As shown, a marking area 300 may contain only one box-matching mark group 403, which can detect box-matching deviation in a preset direction; while different marking areas 300 may be equipped with box-matching mark groups 403 for detecting box-matching deviation in different preset directions. For example, in the box-matching mark group 403 set in marking area 3001, the comb teeth of the first box-matching mark 103 and the second box-matching mark 203 are oriented longitudinally, for detecting box-matching deviation in the lateral direction; in the box-matching mark group 403 set in marking area 3002, the comb teeth of the first box-matching mark 103 and the second box-matching mark 203 are oriented laterally, for detecting box-matching deviation in the longitudinal direction.

[0081] In this embodiment, each pair of cassette markers 403 includes a first pair of cassette markers 103 located on the first substrate 100 and a second pair of cassette markers 203 located on the second substrate 200. The first pair of cassette markers 103 is disposed on the side of the first substrate 100 closest to the second substrate 200, and the second pair of cassette markers 203 is disposed on the side of the second substrate 200 closest to the first substrate 100. In one specific implementation, the first pair of cassette markers 103 may be disposed co-layered with one film layer in the first substrate 100 other than the film layer covering the entire substrate, and the second pair of cassette markers 203 may be disposed co-layered with one film layer in the second substrate 200 other than the film layer covering the entire substrate. Specifically, the co-layered film layer can be determined according to actual needs.

[0082] It should be noted that the same layer setting here can refer to the same layer being formed in the same forming process as the film layer.

[0083] Furthermore, in order to facilitate the observation of the alignment of the comb teeth in the box alignment mark group 403 after box alignment, in the detection direction of box alignment deviation, that is, in the observation direction of the user observing the box alignment mark group 403, all the film layers formed by the first box alignment mark 103 near the observer can be transparent, and all the film layers formed by the second box alignment mark 203 near the observation direction can be transparent, thereby facilitating the observation of the box alignment marks.

[0084] In this embodiment, the first pair of box marks 103 and the second pair of box marks 203 in each pair of box marks group 403 are comb-shaped, such as... Figure 2 , Figure 3 and Figure 4As shown, the comb-shaped box-matching mark may include: a line 1031 extending along a preset direction, and a plurality of comb teeth 1032 disposed on one side of the line, the plurality of comb teeth being spaced apart along the preset direction on one side of the line. Since it is necessary to measure the box-matching deviation of the first substrate 100 and the second substrate 200 according to the alignment of the comb teeth, the comb teeth of the first box-matching mark 103 on the first substrate 100 need to face the comb teeth of the second box-matching mark 203 on the second substrate 200, such as... Figure 4 As shown, the comb teeth of the first pair of box markings 103 and the second pair of box markings 203 need to face each other when aligning the boxes. This allows them to point towards each other after alignment, thus determining the alignment of the comb teeth.

[0085] Of course, in order to achieve the purpose of measuring the deviation of the boxes, in a box pair mark group 403, the comb teeth of the first box pair mark 103 and the comb teeth of the second box pair mark 203 can be matched with each other in size. For example, the comb teeth of the first box pair mark 103 and the comb teeth of the second box pair mark 203 can be the same in terms of spacing, comb tooth length and comb tooth width.

[0086] The display panel 400 using this embodiment includes a first matching mark group 403 comprising a comb-shaped first matching mark 103 on the first substrate 100 and a comb-shaped second matching mark 203 on the second substrate 200. The comb teeth of the first matching mark 103 and the second matching mark 203 face each other. Therefore, the matching deviation of the first substrate 100 and the second substrate 200 in a predetermined direction can be determined by the alignment of the comb teeth of the first matching mark 103 and the second matching mark 203. Furthermore, since the comb teeth have a relatively fine morphology, their spatial layout is highly flexible. When using comb teeth as matching marks and comb tooth alignment as a measurement of matching deviation, the space occupied by the comb teeth in the bezel area 402 of the display panel 400 can be reduced. This allows it to be applied to display panels 400 with narrow bezels or fewer bezels, such as display panels 400 with only one bezel.

[0087] In some embodiments, as described above, the first substrate 100 can be an array substrate. In this case, the first pair of cell markers 103 can be disposed in the same layer as other film layers except for the film layer that covers the entire surface of the array substrate. Furthermore, the first pair of cell markers 103 can be disposed in the same layer as the metal film layer in the array substrate that is farthest from the second substrate 200, such as the gate film layer (gate metal layer).

[0088] In some embodiments, as described above, the second substrate 200 can be a color filter substrate. In this case, the second cell pair mark 203 of the color filter substrate can be disposed in the same layer as other film layers except for the film layer that covers the entire surface of the color filter substrate. Further, the second cell pair mark 203 is disposed in the same layer as the black matrix film layer of the color filter substrate.

[0089] In some embodiments, the first substrate 100 is an array substrate and the second substrate 200 is a color filter substrate. In this case, the first cell pair mark 103 can be disposed in the same layer as the gate metal layer, and the second cell pair mark 203 can be disposed in the same layer as the black matrix film layer. The meaning of being disposed in the same layer can be that the cell pair mark and the film layer are formed in a single film formation process, and the material used can be the same as or different from the film layer in the same layer, which is not limited here.

[0090] When the first pair of cell markers 103 can be co-layered with the metal film layer furthest from the second substrate 200 in the array substrate, and the second pair of cell markers 203 can be co-layered with the black matrix film layer, manufacturing deviations of the cell marker group 403 can be avoided, thereby improving the accuracy of cell deviation measurement. This is because, since the metal film layer furthest from the second substrate 200 is co-layered, such as the gate metal layer, which is the first film layer patterned on the first substrate 100, and the other patterned film layers on the first substrate 100 are all formed based on this film layer, due to unavoidable errors in the film layer formation process, the other film layers may have deviations from the first formed film layer, generally around 0.2 μm. If the first pair of cell markers 103 is co-layered with the other film layers, it will also inherit such deviations, resulting in the first pair of cell markers 103 not accurately reflecting the film layer size of the first substrate 100. Therefore, the cell marker group 403 itself will have certain manufacturing deviations, leading to inaccurate cell deviation measurement.

[0091] When the first pair of cell markings 103 and the second pair of cell markings 203 are set in the same layer as the reference film layer, it can be ensured that the first pair of cell markings 103 and the second pair of cell markings 203 are made in the same layer as the reference film layer. This can accurately reflect the marking of the film layer size of the first substrate 100, thereby improving the measurement accuracy of the cell pairing deviation.

[0092] In some embodiments, several ways of setting the box marking group 403 in the border area 402 are described, that is, the position of the marking area 300 is described.

[0093] Reference Figures 5a-5e As shown, a top view schematic diagram of several display panels 400 is presented, such as... Figures 5a-5e As shown, the display panel 400 also includes a display area 401, and the border area 402 includes a sub-border area 402 located on at least one side of the display area 401; wherein, a plurality of marking areas 300 are spaced apart in the sub-border area 402 on at least one side.

[0094] In some embodiments, multiple marking areas 300 may be spaced apart in sub-bezel areas 402 on multiple sides, thereby enabling the detection of cell alignment deviation in a preset direction at multiple locations on the display panel 400, thus improving the accuracy of cell alignment deviation detection.

[0095] In a specific example A of this embodiment, multiple marker areas 300 can be distributed in sub-border areas 402 on two adjacent sides of the display area 401, and a sub-border area 402 can have one or more spaced marker areas 300. Figure 5a As shown, the border area 402 includes a first sub-border area 4021 located on one side of the display area 401, and a second sub-border area 4022 adjacent to the first sub-border area 4021. The first sub-border area 4021 includes one or more spaced marking areas 300, and the second sub-border area 4022 includes one or more spaced marking areas 300.

[0096] In this example A, the preset direction for detection of the box marker group 403 set in the marker area 300 of the first sub-border area 4021 can be the extension direction of the first sub-border area 4021, such as... Figure 5a As shown, the preset direction is the horizontal direction when viewing the display panel 400 from above. The preset direction used for detection by the box-marking group 403 set in the second sub-bezel area 4022 can be the extension direction of the second sub-bezel area 4022, such as... Figure 5a As shown, the extension direction of the second sub-border area 4022 is the vertical direction when viewed from above the display panel 400.

[0097] Using this example A, the alignment of the horizontally arranged comb teeth in the horizontal extension direction of the display panel 400 can be used to detect the alignment deviation in the horizontal direction, and the alignment of the vertically arranged comb teeth in the vertical extension direction of the display panel 400 can be used to detect the alignment deviation in the vertical direction. This allows the arrangement of the comb teeth of the alignment mark group 403 to be adapted to the space provided by the sub-bezel area 402, thereby achieving full utilization of the space provided by the bezel area 402.

[0098] Of course, in one specific implementation of Example A, the preset direction for detection of the box-matching mark group 403 set in the mark area 300 of the first sub-border area 4021 may include the vertical direction and the horizontal direction; or, the preset direction for detection of the box-matching mark group 403 set in the mark area 300 of the second sub-border area 4022 may include the vertical direction and the horizontal direction; or, the preset direction for detection of the box-matching mark group 403 set in the mark area 300 of the first sub-border area 4021 may include the vertical direction and the horizontal direction, and the preset direction for detection of the box-matching mark group 403 set in the mark area 300 of the second sub-border area 4022 may also include the vertical direction and the horizontal direction.

[0099] In a specific example B of this embodiment, multiple marker areas 300 can be distributed in sub-border areas 402 on two opposite sides of the display area 401, and each sub-border area 402 can have one or more spaced marker areas 300. Figure 5b As shown, the border area 402 includes a first sub-border area 4021 located on one side of the display area 401, and a third sub-border area 4023 opposite to the first sub-border area 4021. The first sub-border area 4021 includes one or more spaced marking areas 300, and the third sub-border area 4023 includes one or more spaced marking areas 300. The number of marking areas 300 included in the first sub-border area 4021 may differ from the number of marking areas 300 included in the second sub-border area 4022.

[0100] In one implementation of this example B, the box alignment mark group 403 set in the mark area 300 in the first sub-border region 4021 is used to detect box alignment deviations in two preset directions, the two preset directions including the extension direction of the first sub-border region 4021 and the aforementioned... Figure 5b The method for extending the second sub-border region 4022 in the middle is as follows: Figure 5a As shown, the extension direction of the first sub-bezel area 4021 is the horizontal direction when viewed from above the display panel 400, and the extension direction of the second sub-bezel area 4022 is the vertical direction when viewed from above the display panel 400. Similarly, the alignment mark group 403 set in the mark area 300 in the third sub-bezel area 4023 can also be used to detect alignment deviations in two preset directions, namely alignment deviations in the vertical and horizontal directions.

[0101] Specifically, the first sub-border area 4021 includes two marking areas 300, and the third sub-border area 4023 may also include two marking areas 300. In the first sub-border area 4021, one marking area 300 is used to set a box alignment mark group 403 for detecting box alignment deviation in the lateral direction, and the other marking area 300 is used to set a box alignment mark group 403 for detecting box alignment deviation in the longitudinal direction. Similarly, in the third sub-border area 4023, one marking area 300 is used to set a box alignment mark group 403 for detecting box alignment deviation in the lateral direction, and the other marking area 300 is used to set a box alignment mark group 403 for detecting box alignment deviation in the longitudinal direction.

[0102] In another implementation of this example B, the box alignment mark group 403 set in the mark area 300 of the first sub-border region 4021 is used to detect box alignment deviations in two preset directions, and the box alignment mark group 403 set in the mark area 300 of the third sub-border region 4023 can be used to detect box alignment deviations in one preset direction, namely, box alignment deviations in the vertical or horizontal direction. Alternatively, the box alignment mark group 403 set in the mark area 300 of the first sub-border region 4021 can be used to detect box alignment deviations in one preset direction, and the box alignment mark group 403 set in the mark area 300 of the third sub-border region 4023 can be used to detect box alignment deviations in two preset directions.

[0103] Of course, in this example B, the first sub-border area 4021 and the third sub-border area 4023 can also be sub-border areas 402 that extend in the vertical direction of the display panel 400.

[0104] Using this example B, alignment deviations in the vertical and horizontal directions can be detected simultaneously based on the alignment of the vertical and horizontal comb teeth in a single extension direction (vertical or horizontal) of the display panel 400. This allows the display panel 400 to detect alignment deviations in both the vertical and horizontal dimensions by simultaneously arranging two preset alignment mark groups 403 in a dimension with available space (such as the vertical direction), even when space is missing in a certain dimension (such as the horizontal direction). This solves the problem of missing detection dimensions caused by space limitations in any direction and makes full use of the space provided by the border area 402 of the display panel 400.

[0105] In a specific example C of this embodiment, multiple marker areas 300 can be distributed in the sub-border areas 402 on the three sides of the display area 401, and each sub-border area 402 can have one or more spaced marker areas 300. Figure 5cAs shown, the border area 402 includes a first sub-border area 4021 located on one side of the display area 401, a second sub-border area 4022 adjacent to the first sub-border area 4021, and a third sub-border area 4023 opposite to the first sub-border area 4021; wherein, the first sub-border area 4021, the second sub-border area 4022 and the third sub-border area 4023 each include one or more spaced marking areas 300, and the number of marking areas 300 included in the three sub-border areas 402 may be different.

[0106] In this example C, the preset direction for detection of the box marker group 403 set in the marker area 300 of the first sub-border area 4021 and the third sub-border area 4023 can be the extension direction of the first sub-border area 4021, such as... Figure 5c As shown, the extending direction of the first sub-bezel area 4021 and the third sub-bezel area 4023 is the horizontal direction when viewed from above the display panel 400. The preset direction for detection of the box-marking group 403 set in the marking area 300 of the second sub-bezel area 4022 can be the extending direction of the second sub-bezel area 4022, such as... Figure 5c As shown, the extension direction of the second sub-border area 4022 is the vertical direction when viewed from above the display panel 400.

[0107] Of course, in this example C, a set of alignment marks 403 for detecting alignment deviation in the extension direction of the second sub-border area 4022 can also be provided in the marking area 300 of the first sub-border area 4021 or the third sub-border area 4023, such as a set of alignment marks 403 in the longitudinal direction. In this way, alignment deviation in the same preset direction can be detected at multiple locations, thereby improving the accuracy of alignment deviation detection. For example, it can detect the different alignment deviations at different locations caused by the rotational misalignment between the first substrate 100 and the second substrate 200.

[0108] In a specific example D of this embodiment, multiple marker areas 300 can be distributed in the sub-border areas 402 on the four sides of the display area 401, and each sub-border area 402 can have one or more spaced marker areas 300. Figure 5d As shown, the border area 402 includes a first sub-border area 4021 located on one side of the display area 401, a second sub-border area 4022 and a fourth sub-border area 4024 adjacent to the first sub-border area 4021, and a third sub-border area 4023 opposite to the first sub-border area 4021.

[0109] Among them, the first sub-border area 4021, the second sub-border area 4022, the third sub-border area 4023 and the fourth sub-border area 4024 each include one or more spaced marking areas 300, and the number of marking areas 300 included in the four sub-border areas 402 can be different.

[0110] In this example D, the preset direction for detection of the box marker group 403 set in the marker area 300 of the first sub-border area 4021 and the third sub-border area 4023 can be the extension direction of the first sub-border area 4021, such as... Figure 5d As shown, the extending direction of the first sub-bezel area 4021 and the third sub-bezel area 4023 is the horizontal direction when viewed from above the display panel 400. The preset direction for detection of the box-marking group 403 set in the marking area 300 of the second sub-bezel area 4022 and the fourth sub-bezel area 4024 can be the extending direction of the second sub-bezel area 4022, such as... Figure 5d As shown, the extension direction of the second sub-border area 4022 and the fourth sub-border area 4024 is the vertical direction when viewed from above the display panel 400.

[0111] This example D is applicable to a display panel 400 with sufficient space in the bezel area 402, whereby the box marker groups 403 can be evenly set at four positions in the bezel area 402 to detect box misalignment.

[0112] like Figure 5e As shown, in one example E, the display panel 400 can be a three-sided borderless display panel 400, then the border area 402 includes a sub-border area 402 located on one side of the display area 401, the sub-border area 402 includes two marking areas 300, and the two marking areas 300 are set close to two different sides of the sub-border area 402, and the two different sides are set opposite to each other in the extending direction of the sub-border area 402.

[0113] Among them, at least two marking areas 300 are used to detect the box alignment deviation in two mutually perpendicular preset directions.

[0114] In this embodiment, the sub-border area 402 located on one side of the display area 401 can refer to the area surrounding one side of the display area 401, such as... Figure 5e As shown, the sub-bezel area 402 can be the DP side region of the display panel 400 near the display area 401. In some examples, when viewed from above the display panel 400, the extension direction of this sub-bezel area 402 can be either vertical or horizontal. Multiple marking areas 300 can be spaced apart within this sub-bezel area 402.

[0115] The sub-border area 402 may be provided with at least two marking areas 300. If it includes two marking areas 300, these two marking areas 300 are positioned near two different sides of the sub-border area 402, and these two different sides are positioned opposite each other in the extending direction of the sub-border area 402. Figure 5e As shown, the two different sides near the sub-border area 402 can be the first side and the second side. The first side and the second side can be regarded as the two corner areas of the sub-border area 402. That is to say, a marking area 300 is set in the two corner areas of the sub-border area 402. At least one marking area 300 can be set in one corner area.

[0116] In order to enable the box alignment mark group 403 set in the sub-border area 402 on one side to detect box alignment deviations in different preset directions, in a specific example of this embodiment, different mark areas 300 can be set with box alignment mark groups 403 for detecting box alignment deviations in different preset directions. For example, the sub-border area 402 includes two mark areas 300, and the two mark areas 300 are set close to two different sides of the sub-border area 402. Then, one mark area 300 can be used to set the box alignment mark group 403 for detecting box alignment deviations in one preset direction (such as horizontal), and the other mark area 300 can be used to set the box alignment mark group 403 for detecting box alignment deviations in another different preset direction (such as vertical).

[0117] In another specific example of this embodiment, each marking area 300 may be configured with a set of box alignment marks 403 for detecting box alignment deviations in multiple different preset directions. For example, if a sub-border area 402 includes two marking areas 300, and the two marking areas 300 are located near two different sides of the sub-border area 402, then each marking area 300 may be configured with a set of box alignment marks 403 for detecting lateral box alignment deviations and a set of box alignment marks 403 for detecting longitudinal box alignment deviations.

[0118] In this embodiment of the display panel 400, a set of alignment mark groups 403 for detecting alignment deviations in two preset directions can be provided in one side border area 402 of the display panel 400. Thus, even when the space in the border area 402 of the display panel 400 is limited, the setting of the set of alignment mark groups 403 for detecting alignment deviations in two preset directions can be achieved with less space, thereby making full use of the space provided by the border area 402 of the display panel 400.

[0119] As shown in the above embodiments, each marking area 300 may be provided with one or more box-matching mark groups 403. For each marking area 300, the at least one box-matching mark group 403 may include a box-matching mark group 403 for detecting a single preset direction, or a box-matching mark group 403 for detecting different preset directions.

[0120] In other words, a marking area 300 can be used to detect box alignment deviation in a single preset direction, or it can be used to detect box alignment deviation in two mutually perpendicular preset directions. Thus, the marking area 300 includes at least one box alignment mark group 403, which includes a first box alignment mark group 103 and / or a second box alignment mark group 203; the preset direction corresponding to the first box alignment mark group 103 is a first direction, and the preset direction corresponding to the second box alignment mark group 203 is a second direction; wherein, the first direction and the second direction are two mutually perpendicular directions.

[0121] In one example of this embodiment, the marking area 300 may include a pair of box marking groups 403, which may be a first pair of box marking groups 103 or a second pair of box marking groups 203, as shown in Examples A, C and D above.

[0122] In another example of this embodiment, a marking area 300 may include two box-pair marking groups 403, which may be either a first box-pair marking group 103 or a second box-pair marking group 203, as shown in Examples A, C and D above.

[0123] In another example of this embodiment, the marking area 300 may include two box-pairing marking groups 403, which may include a first box-pairing marking group 103 and a second box-pairing marking group 203, as detailed above. Figure 5e The relevant description of the example shown is sufficient.

[0124] In this embodiment, the preset direction corresponding to the first pair of box markers 103 is the first direction, and the preset direction corresponding to the second pair of box markers 203 is the second direction; wherein, the first direction and the second direction are two mutually perpendicular directions.

[0125] Among them, such as Figures 5a-5e As shown, the first direction can be the vertical direction when viewing the display panel 400 from above, and the second direction can be the horizontal direction when viewing the display panel 400 from above; or, the first direction can be the horizontal direction when viewing the display panel 400 from above, and the second direction can be the vertical direction when viewing the display panel 400 from above.

[0126] Therefore, a single marking area 300 can be used to detect the alignment deviation in two preset directions, thereby increasing the number of location points of the alignment mark group 403 corresponding to each preset direction. By using the alignment mark group 403 deployed at different locations, the alignment deviation in the preset direction can be detected, thus improving the accuracy of the alignment deviation detection.

[0127] The shape settings for the box marking group 403 will be described below.

[0128] In some embodiments, the display panel 400 further includes a display area 401, and a border area 402 includes a sub-border area 402 located on at least one side of the display area 401. At least one marking area 300 may be located in the sub-border area 402. Specifically, the marking areas 300 may be distributed in the manner described in Example AD above.

[0129] Among them, in the third pair of box mark groups 403 of multiple box mark groups 403, the first pair of box mark 103 and the second pair of box mark 203 include multiple comb teeth that are continuous and uninterrupted; the preset direction corresponding to the third pair of box mark group 403 is parallel to the extension direction of the sub-border area 402 where it is located.

[0130] Specifically, in this example, the preset direction for the third box marker group 403 to detect box misalignment is parallel to the extension direction of the sub-border region 402 in which it is located. For example, the third box marker group 403 is used to detect box misalignment in the lateral direction, and the sub-border region 402 in which it is located is a border region 402 in the lateral direction. That is, there is sufficient space in the lateral direction for the comb teeth in the third box marker group 403 to be arranged in the lateral direction. Therefore, the first box marker 103 and the second box marker 203 in the third box marker group 403 may include multiple continuous comb teeth. In other words, the comb teeth of the first box marker 103 and the second box marker 203 are not divided, but arranged as a whole on the sub-border region 402.

[0131] For example, with Figure 5a Taking Example A as an example, the preset direction for detection of the box-pairing mark group 403 set in the mark area 300 of the first sub-border region 4021 can be the extension direction of the first sub-border region 4021. If it is the horizontal direction, then the box-pairing mark group 403 in the first sub-border region 4021 is the third box-pairing mark group 403, which includes the first box-pairing mark 103 and the second box-pairing mark 203, both of which are continuous and uninterrupted comb teeth, and the comb teeth are arranged in the horizontal direction. Similarly, for Figure 5aThe second sub-border area 4022 extends in the longitudinal direction. The box-matching mark group 403 in the second sub-border area 4022 is also used to detect the box-matching deviation in the longitudinal direction. Therefore, the box-matching mark group 403 in the second sub-border area 4022 is the third box-matching mark group 403. The first box-matching mark 103 and the second box-matching mark 203 included therein are continuous comb teeth, and the comb teeth are arranged in the longitudinal direction.

[0132] In some embodiments, if the space provided by the border area 402 is insufficient, it is necessary to detect the alignment deviation in two preset directions. For example, if the marking areas 300 are all distributed in the sub-border area 402 on one side of the display area 401, at least two sets of alignment mark groups 403 need to be arranged in the sub-border area 402 to detect the alignment deviation in two preset directions.

[0133] Since the two preset directions are perpendicular to each other, such as horizontal and vertical, it is necessary to arrange the box-matching mark group 403 in the vertical direction and the box-matching mark group 403 in the horizontal direction. In practice, the box-matching mark group 403 in the horizontal direction or the box-matching mark group 403 in the vertical direction can be split according to the extension direction of the sub-border area 402, and then the split box-matching mark group 403 can be arranged in the extension direction of the sub-border area 402.

[0134] Of course, in some other embodiments, for detecting the alignment deviation of the same preset direction at multiple different locations, the alignment mark group 403 set in a sub-border area 402 detects the preset direction perpendicular to the extension direction of the sub-border area 402. As shown in Example B above, the alignment mark group 403 set in the mark area 300 in the first sub-border area 4021 is used to detect the alignment deviation of two preset directions. The alignment mark group 403 set in the mark area 300 in the third sub-border area 4023 can also be used to detect the alignment deviation of two preset directions. When the extension direction of the first sub-border area 4021 and the third sub-border area 4023 is horizontal, there is not enough space in the vertical direction for the box alignment mark group 403 that detects box alignment deviation in the vertical direction. Therefore, the first box alignment mark 103 and the second box alignment mark 203 of the box alignment mark group 403 can be split and the resulting sub-box alignment marks can be arranged in the horizontal direction. In this way, sufficient horizontal space is used to deploy the box alignment mark group 403 that is required to be arranged in the vertical direction to detect box alignment deviation in the vertical direction.

[0135] Specifically, in this embodiment, the display panel 400 further includes a display area 401, and the border area 402 includes a sub-border area 402 located on one side of the display area 401. At least one marking area 300 is located entirely in the sub-border area 402. The fourth pair of box marking groups 403 in the plurality of box marking groups 403 includes a plurality of sub-box marking groups 403 arranged at intervals along the extension direction of the sub-border area 402. The preset direction corresponding to the fourth pair of box marking groups 403 is perpendicular to the extension direction of the sub-border area 402.

[0136] Among them, the multiple sub-box mark groups 403 are obtained by segmenting the comb teeth of the first box mark 103 and the comb teeth of the second box mark 203.

[0137] In this embodiment, for a display panel 400 with no borders on three sides, i.e., the display area 401 of the display panel 400 has only one side with a sub-border area 402, all the matching mark groups 403 need to be set in this one sub-border area 402 to detect the matching deviation in two preset directions. Therefore, the space of the sub-border area 402 needs to accommodate the comb-shaped matching marks arranged in two preset directions. For the fourth matching mark group 403, since the preset direction it detects is perpendicular to the extension direction of the sub-border area 402, i.e., the arrangement direction of its comb teeth is perpendicular to the extension direction of the sub-border area 402, in this case, the space provided by the sub-border area 402 for the matching marks in the preset direction is insufficient.

[0138] For example, multiple box-matching mark groups 403 need to be arranged in the horizontally extending sub-border area 402. Specifically, for the box-matching mark group 403 that detects box-matching deviation in the horizontal direction (i.e., the third box-matching mark group 403), such as... Figures 5a-5e Since its comb teeth are arranged in the horizontal direction, it will provide sufficient space; however, for the box alignment mark group 403 (i.e., the fourth box alignment mark group 403) that detects box alignment deviation in the vertical direction, since its comb teeth need to be arranged in the vertical direction, the sub-border area 402 does not have enough space in the vertical direction.

[0139] In this embodiment, the comb teeth of the first pair of box marks 103 and the comb teeth of the second pair of box marks 203 included in the fourth pair of box marks group 403 can be segmented. Specifically, after segmenting the comb teeth of the first pair of box marks 103, multiple segments of first sub-pair of box marks can be obtained. After segmenting the comb teeth of the second pair of box marks 203, multiple segments of second sub-pair of box marks can be obtained. Both the first and second sub-pair of box marks are comb-shaped. The number of first and second sub-pair of box marks is the same. Multiple first and second sub-pair of box marks are combined to obtain multiple sub-pair of box mark groups 403. The number of comb teeth included in the first and second sub-pair of box marks in each sub-pair of box mark group 403 is also the same.

[0140] In other words, multiple sub-box pairing mark groups 403 constitute the fourth box pairing mark group 403, and the multiple sub-box pairing mark groups 403 can be arranged at intervals in the extension direction of the sub-border area 402. Thus, the space provided by the sub-border area 402 in its extension direction can be utilized to arrange box pairing mark groups 403 in the extension direction of the sub-border area 402 for detecting box pairing deviations in a preset direction perpendicular to the extension direction. Therefore, when the space provided by the border area 402 is insufficient, or even when space in one dimension is missing, the box pairing mark groups 403 can be split to achieve the arrangement of box pairing mark groups 403 in both horizontal and vertical dimensions, so as to realize the detection of box pairing deviations in two dimensions, thereby solving the problem of missing detection dimensions caused by space limitations in any direction in the prior art.

[0141] Reference Figure 6a and Figure 6b As shown, Figure 6a A top plan view of the display panel 400 is shown when the box marking group 403 is segmented in the lateral direction. Figure 6b A top plan view of the display panel 400 is shown when the box marking group 403 is segmented in the longitudinal direction.

[0142] like Figure 6a As shown, all the box-matching mark groups 403 are arranged in the horizontally extending sub-border area 402. For the third box-matching mark group X1 that detects the box-matching deviation in the horizontal direction, the first box-matching mark 103 and the second box-matching mark 203 included therein include a number of continuous comb teeth. For the fourth box-matching mark group Y1 that detects the box-matching deviation in the vertical direction, it includes a number of sub-box-matching mark groups 403 arranged in the horizontal direction. Each sub-box-matching mark group 403 can be regarded as a segment of comb teeth after the first box-matching mark 103 is split and a segment of comb teeth after the second box-matching mark 203 is split.

[0143] like Figure 6bAs shown, all the box-matching mark groups 403 are arranged in the longitudinally extending sub-border area 402. Among them, the third box-matching mark group 403Y2 for detecting box-matching deviation in the longitudinal direction includes the first box-matching mark 103 and the second box-matching mark 203, which include multiple comb teeth that are continuous and uninterrupted. The fourth box-matching mark group 403X2 for detecting box-matching deviation in the lateral direction includes multiple sub-box-matching mark groups 403 arranged in the longitudinal direction. Each sub-box-matching mark group 403 can be regarded as a segment of comb teeth after the first box-matching mark 103 is split and the second box-matching mark 203 is split.

[0144] It should be noted that the size of each segment box marker group 403 in the preset direction is smaller than the size of the sub-border area 402 in the preset direction. For example, as shown... Figure 6a As shown, the height of each sub-box marker group 403 in the vertical direction is less than the reserved space height of the sub-border area 402. For example... Figure 6b As shown, the width of each sub-box mark group 403 in the horizontal direction is smaller than the space width reserved in the sub-border area 402.

[0145] The morphology of the comb teeth included in the first pair of box markings 103 and the second pair of box markings 203 mentioned in this disclosure will now be described.

[0146] In some embodiments, the tooth width of the comb teeth in the first pair of box markings 103 is greater than or equal to 5 μm; the tooth width of the comb teeth in the second pair of box markings 203 is greater than or equal to 5 μm.

[0147] Reference Figure 7 As shown, a top view schematic diagram of the box alignment mark group 403 for detecting box alignment deviation in the lateral direction is presented, as follows: Figure 7 As shown, it includes a first pair of box markings 103 and a second pair of box markings 203. The first pair of box markings 103 and the second pair of box markings 203 are in the shape of continuous, uninterrupted comb teeth. The tooth width of the comb teeth in the first pair of box markings 103 can be understood as the line width of the comb teeth. Its size can be greater than or equal to 5μm to ensure the recognition effect under an optical microscope. Similarly, the tooth width of the comb teeth in the second pair of box markings 203 can also be greater than or equal to 5μm.

[0148] Generally, the minimum theoretical resolution of an optical microscope is 0.2 μm. To ensure good recognition under an optical microscope, the minimum size of its tooth width can be 5 μm. Of course, to ensure that the marking of the box does not take up too much space, the maximum size of its tooth width can be 10 μm.

[0149] In some other embodiments, the spacing between the multiple comb teeth in the first pair of box marks 103 may be equal, and / or the multiple comb teeth may have the same size; the spacing between the multiple comb teeth in the second pair of box marks 203 may be equal, and / or the multiple comb teeth may have the same size.

[0150] In this embodiment, to ensure the accuracy of the box deviation measurement, the spacing between the multiple comb teeth in the first box pair mark 103 can be the same, and the dimensions of the multiple comb teeth in the first box pair mark 103 can also be the same. The dimensions here can include the line width and length of the comb teeth. That is, the line width and length of the multiple comb teeth are the same.

[0151] In some examples, the spacing between the multiple comb teeth in the first pair of box markers 103 may be different, but the dimensions of the multiple comb teeth in the first pair of box markers 103 are the same. In this case, the spacing between the multiple comb teeth can vary by a multiple, such as the spacing between comb teeth 1 and 2 being half the spacing between comb teeth 2 and 3. In this case, it can serve as a box alignment marker for display panels 400 where the box alignment deviation requirement is not high. During measurement, it facilitates the user's identification of the comb tooth alignment and is suitable for display panels 400 where the box alignment deviation requirement is not high, such as a box alignment deviation requirement of ±10μm.

[0152] Of course, for the second pair of box markings 203, the spacing between the multiple comb teeth in the second pair of box markings 203 can be the same, and the size of the multiple comb teeth in the second pair of box markings 203 can also be the same.

[0153] Furthermore, if the dimensions of the comb teeth in the first pair of box markings 103 are the same, the dimensions of the comb teeth in the second pair of box markings 203 must also be the same, so as to facilitate the measurement of the box alignment deviation based on the alignment of the comb teeth of the first pair of box markings 103 and the second pair of box markings 203.

[0154] Since it is necessary to measure the alignment deviation of the boxes based on the alignment of the comb teeth of the first box pair mark 103 and the second box pair mark 203, in some examples, the dimensions of multiple comb teeth in the first box pair mark 103 can be the same as the dimensions of multiple comb teeth in the second box pair mark 203. Specifically, this same dimension can include:

[0155] The line width of the comb teeth in the first pair of box markings 103 is the same as the line width of the comb teeth in the second pair of box markings 203, but the lengths may be different;

[0156] The length of the comb teeth in the first pair of box markings 103 is the same as the length of the comb teeth in the second pair of box markings 203, and the line width of the comb teeth in the first pair of box markings 103 is the same as the line width of the comb teeth in the second pair of box markings 203.

[0157] As described above, when the spacing between the comb teeth of the first pair of box markings 103 is the same, the spacing between the comb teeth of the second pair of box markings 203 must also be the same. Specifically, when the spacing between the multiple comb teeth in the first pair of box markings 103 is equal, in some embodiments, the first spacing between any two adjacent comb teeth in the first pair of box markings 103 is greater than or equal to 5 μm; and the second spacing between any two adjacent comb teeth in the second pair of box markings 203 is greater than or equal to 5 μm.

[0158] In this embodiment, when the spacing between the comb teeth is greater than or equal to 5 μm, the identification effect of the comb tooth alignment under an optical microscope can be guaranteed. Of course, the maximum value of the spacing between the comb teeth can be limited to 10 μm, which can be determined according to the range of the box deviation to be identified and the space size provided by the border area 402.

[0159] Specifically, the first interval can be greater than or equal to 5 μm and less than or equal to 10 μm; the second interval can also be greater than or equal to 5 μm and less than or equal to 10 μm.

[0160] In some embodiments, the first interval distance may be the same as or different from the second interval distance.

[0161] Where the first and second intervals are the same, the box alignment deviation can be determined based on the offset distance between the misaligned comb teeth. For example, refer to... Figure 8 As shown, a schematic diagram illustrating the principle of box deviation measurement in this case is presented. Figure 8 As shown, in the first pair of box markings 103, the multiple comb teeth are of the same size, and the first interval distance between the multiple comb teeth is the same; in the second pair of box markings 203, the multiple comb teeth are of the same size, and the second interval distance between the multiple comb teeth is the same; and the size of the comb teeth in the first pair of box markings 103 is the same as the size of the comb teeth in the second pair of box markings 203, and the first interval distance and the second interval distance are the same. Figure 8 As shown, the first pair of box markings 103 and the second pair of box markings 203 are not completely aligned, and there is a deviation between them, that is, the comb teeth of the two are misaligned. In this case, the box alignment deviation can be determined according to the offset S between the misaligned comb teeth. For example, if the offset between the comb teeth is 0.5μm, the box alignment deviation can be determined to be 0.5.

[0162] The offset can be determined using relevant techniques, and will not be elaborated upon here.

[0163] In cases where the first and second intervals are different, the alignment deviation can be determined based on the aligned comb teeth. In this case, to facilitate manual measurement of the alignment deviation in a preset direction using the alignment mark group 403, multiple scale marks 500 can be set on each alignment mark group 403. The numerical range of the multiple scale marks 500 can be set according to the alignment deviation inspection range.

[0164] Specifically, when the first interval distance is different from the second interval distance, the box marking group 403 further includes: a plurality of scale marks 500; the plurality of scale marks 500 are located on the side of the first box marking 103 away from the second box marking 203, or on the side of the second box marking 203 away from the first box marking 103.

[0165] Wherein, two adjacent scale marks 500 pass through at least two comb teeth, and the difference between the scales of two adjacent scale marks 500 is the product of the difference between the first interval distance and the second interval distance and the number of comb teeth.

[0166] The plurality of scale marks 500 can be located on either the first substrate 100 or the second substrate 200, preferably on one side of the array substrate of the display panel 400. Specifically, the plurality of scale marks 500 can be located on the side opposite to the orientation direction of the comb teeth. (Refer to...) Figure 9 The diagram shows a top view of a set of cassette markers 403 with scale marks 500. Multiple scale marks 500 are located on one side of the comb tooth orientation direction in the first cassette marker 103. That is, scale marks 500 are provided on the side opposite to the comb tooth orientation direction to avoid the scale marks 500 being obscured by the comb teeth of the other substrate after the first substrate 100 and the second substrate 200 are cassette paired, thus facilitating user reading of the scale marks 500.

[0167] like Figure 9 As shown, taking the detection of misalignment in the lateral direction as an example, the spacing between any two adjacent scale marks 500 is the same, and each pair of adjacent scale marks 500 passes through at least two comb teeth. In other words, each pair of adjacent scale marks 500 must contain at least two comb teeth. Specifically, the at least two comb teeth include the comb teeth corresponding to the scale marks, which can also be understood as the comb teeth directly opposite the scale marks. "Directly opposite" means that the scale marks are set on the extension line of the comb teeth's length direction. If two adjacent scale marks include two comb teeth, then both scale marks can be set on the extension line of the comb teeth's length direction, meaning both scale marks are directly opposite the comb teeth. If two adjacent scale marks include multiple comb teeth, then the two scale marks can be set on the extension line of the length direction of the comb teeth located at the two ends of the multiple comb teeth.

[0168] In some examples, each scale mark 500 is positioned on the extension line of the comb tooth along its length, that is, on the extension line of the comb tooth opposite to its orientation. Specifically, one scale mark 500 can be positioned on the extension line of each comb tooth, so that every two scale marks 500 correspond to two comb teeth; or, every three comb teeth can correspond to two scale marks 500, thus setting one scale mark 500 every other comb tooth. Figure 9 This shows the case where three comb teeth correspond to two scale marks of 500.

[0169] In this embodiment, each scale mark 500 may correspond to its own scale value. In some examples, among the multiple scale marks 500, there may be a first scale mark 500 with a value of "0". This first scale mark 500 may be located on the extension line of the comb tooth located at the center position among the multiple comb teeth. Next, the second scale marks 500, excluding the first scale mark 500, may be arranged sequentially along a preset direction with the first scale mark 500 as the center. Starting from the first scale mark 500, the scale values ​​corresponding to the second scale marks 500 arranged sequentially along the preset direction change arithmetically, such as the scale value being smaller the closer to the first scale mark 500, thereby forming the scale of the box mark group 403. Figure 9 As shown, the first scale mark 500 in the scale mark 500 is "0", and multiple second scale marks 500 are arranged sequentially on the left and right sides of the first scale mark 500, and the scale values ​​change in an arithmetic progression.

[0170] Since the first spacing between the comb teeth in the first pair of box markings 103 is different from the second spacing between the comb teeth in the second pair of box markings 203, in practice, aligned comb teeth can characterize the range of box alignment deviation. Specifically, the difference between the scales of two adjacent scale markings 500 can be the product of the difference between the first and second spacing distances and the number of comb teeth between the two scale markings 500. Thus, the box alignment deviation can be directly determined based on the scale markings 500 corresponding to the aligned comb teeth.

[0171] For example, such as Figure 9As shown, at scale mark 500 "1", the comb teeth of the first pair of box marks 103 and the second pair of box marks 203 are aligned. Assuming the deviation between the first and second interval distances is 0.5μm, from scale mark 500 "0" to scale mark 500 "1", it passes through three comb teeth, including comb teeth a1, a2, and a3 in the first pair of box marks 103, and comb teeth b1, b2, and b3 in the second pair of box marks 203. Since the difference in interval distance between these three pairs of comb teeth is 0.5μm, the offset when comb teeth b3 and a3 are aligned is 1μm, which indicates a 1μm deviation in the box alignment. This 1μm is exactly the scale value corresponding to scale mark 500. Therefore, the box alignment deviation can be determined directly based on the scale mark 500 corresponding to the aligned comb teeth.

[0172] Of course, if no scale mark 500 is set at the aligned comb teeth, the scale value of the aligned comb teeth can be determined based on the two scale marks 500 closest to the aligned comb teeth. For example, if the aligned comb teeth are comb teeth a2, then the two scale marks 500 near comb teeth a2 are scale marks 500 "0" and "1" respectively, so the scale corresponding to comb teeth a2 can be determined to be 0.5.

[0173] It should be noted that the scale range of the scale mark 500 in this embodiment can be determined based on the deviation inspection range of the box. For example, such as Figure 9 As shown, its deviation inspection range for the box is ±7μm, so the numerical range of the scale corresponding to the scale mark 500 is also ±7μm.

[0174] Specifically, in this embodiment, the difference between the first interval distance and the second interval distance can characterize the detection accuracy of the cell alignment deviation detection. For the same cell alignment deviation detection range, the smaller the difference between the first interval distance and the second interval distance, the higher the detection accuracy and the more refined the detection of cell alignment deviation.

[0175] For example, the detection range for cell alignment deviation is ±7μm. If the difference between the distances of the first and second intervals is 0.2μm, the detection accuracy is 0.2μm, indicating that it can detect cell alignment deviations as small as 0.2μm. If the difference between the distances of the first and second intervals is 0.5μm, the detection accuracy is 0.5μm, indicating that it can detect cell alignment deviations as small as 0.5μm. It is understandable that the lower the detection accuracy, the more precise the detection of cell alignment deviations can be, improving the subtlety of the deviation detection.

[0176] In some examples, the difference between the first and second interval distances can be set to be greater than or equal to 0.2 μm and less than or equal to 2 μm. That is, the detection accuracy for cell deviation can be as high as 0.2 μm and as low as 2 μm, with a detection accuracy range of 0.2 μm to 2 μm.

[0177] The setting of the box deviation detection range can be independent of the setting of the detection accuracy. In one optional example, a larger box deviation detection range allows for a higher detection accuracy, i.e., a larger difference between the distances of the first and second intervals; conversely, a smaller box deviation detection range allows for a higher detection accuracy, i.e., a smaller difference between the distances of the first and second intervals.

[0178] For example, if the cell misalignment detection range is ±7μm, which is the current tolerable range for cell misalignment, then the detection accuracy can be set to 0.5μm. If the cell misalignment detection range is ±5μm, which is for display devices with higher requirements for cell misalignment, then the detection accuracy can be set to 0.3μm to improve the cell misalignment detection accuracy.

[0179] In some embodiments, to facilitate user observation of the alignment of the comb teeth, the color of the aligned comb teeth is generally darker when there is an overlapping area, thus making it easier for the user to observe. In a display panel 400, the orthogonal projection of the comb teeth in the first pair of box marks 103 onto the second substrate 200 overlaps with the comb teeth in the second pair of box marks 203.

[0180] Specifically, partial overlap can mean that, in the direction from which the first pair of box markings 103 points to the second pair of box markings 203, the comb teeth in the first pair of box markings 103 and the comb teeth in the second pair of box markings 203 partially overlap. In this case, after the first substrate 100 and the second substrate 200 are assembled, the comb teeth in the first pair of box markings 103 and the comb teeth in the second pair of box markings 203 may have an overlapping area.

[0181] The partial overlap can be understood as follows: a portion of the comb teeth in the first pair of box marks 103 is located in the region of the orthographic projection of the second pair of box marks 203 on the first substrate 100, and a portion of the comb teeth in the second pair of box marks 203 is also located in the region of the orthographic projection of the first pair of box marks 103 on the second substrate 200. Thus, after box alignment, the length of the comb teeth in one pair of box marks (such as the first pair of box marks 103) can extend into the other pair of box marks (such as the second pair of box marks 203) to overlap with the comb teeth in the other pair of box marks.

[0182] like Figure 9As shown, after the first substrate 100 and the second substrate 200 are paired, the comb teeth in the first pair of box marking 103 overlap with the comb teeth in the second pair of box marking 203. The overlapping part is darker in color, so the aligned comb teeth can be determined based on the darker area.

[0183] In a further example of this embodiment, the overlapping region has a dimension greater than or equal to 2 μm in the length direction of the comb teeth, and is less than the length of the comb teeth. The lower limit of the overlapping region can be 2 μm, that is, the comb teeth in the first pair of box marks 103 and the second pair of box marks 203 need to have a spatial overlap of at least 2 μm. The length of the comb teeth can be determined according to requirements, and generally the length of the comb teeth can be greater than 10 μm.

[0184] It should be noted that the size of the overlapping area must be smaller than the length of the comb teeth. Specifically, when the lengths of the comb teeth of the first pair of box markings 103 and the second pair of box markings 203 are different, the size of the overlapping area must be smaller than the length of the shorter comb tooth in the first pair of box markings 103 and the second pair of box markings 203. For example, if the length of the comb tooth in the first pair of box markings 103 is 10 μm and the length of the comb tooth in the second pair of box markings 203 is 12 μm, then the size of the overlapping area in the length direction of the comb teeth should be less than 10 μm.

[0185] Of course, in a further example of this embodiment, the color of the first pair of box markers 103 is different from the color of the second pair of box markers 203. Thus, when the two overlap, the overlapping area is a composite color of the two colors, thereby making the alignment situation more clearly identifiable.

[0186] In some embodiments, the comb teeth in the first pair of box markings 103 and the second pair of box markings 203 can be rectangular, or their free ends can be spike-shaped or arc-shaped; of course, in order to facilitate the identification of the alignment of the comb teeth, the shape of the comb teeth is preferably rectangular.

[0187] by Figure 6a Taking the display panel 400 shown as an example, the following description illustrates a specific example of the display panel 400:

[0188] The display panel 400 includes an array substrate and a color filter substrate. The array substrate includes a first display area 101 and a sub-bezel area 402 surrounding one side of the first display area 101. The color filter substrate includes a second display area 201 and a sub-bezel area 402 surrounding one side of the second display area 201. When the two are aligned, the resulting display panel 400 is a three-sided borderless display area 401 with a sub-bezel area 402 on one side. The sub-bezel area 402 extends horizontally. It should be noted that this horizontal direction refers to the horizontal direction when the display panel 400 is viewed from above.

[0189] At the two sides of the sub-border area 402 near the display area 401, i.e., the two corner areas, a marking area 300 is provided in each of them. Each marking area 300 includes two matching marking groups 403. One of the matching marking groups 403 is used to detect matching deviation in the horizontal direction, and the other matching marking group 403 is used to detect matching deviation in the vertical direction. Among them, the matching marking group 403 that detects matching deviation in the horizontal direction is called matching marking group X1, and the matching marking group 403 that detects matching deviation in the vertical direction is called matching marking group Y1.

[0190] In this configuration, the first pair of cell markers in cell marker group X1 is disposed in the same layer as the gate metal film layer of the array substrate. The material can be the same as the gate metal film layer, but its color is an opaque color, such as colored. The second pair of cell markers in cell marker group X1 is disposed in the same layer as the black matrix film layer of the color filter substrate. The material can be different from the black matrix film layer, but its color is an opaque color.

[0191] The cell alignment mark group X1 includes a first cell alignment mark 103 and a second cell alignment mark 203 in a comb-like shape in the lateral direction. The first cell alignment mark 103 is located on the array substrate, and the second cell alignment mark 203 is located on the color filter substrate. After cell alignment, the comb teeth of the first cell alignment mark 103 face the second cell alignment mark 203, and the comb teeth of the second cell alignment mark 203 face the first cell alignment mark 103. The comb teeth of the cell alignment mark group X1 are continuous and uninterrupted, and include multiple scale marks 500. Among the multiple scale marks 500, the scale mark 500 with a value of "0" is located on the comb tooth at the center position point. Each comb tooth corresponds to one scale mark 500. The range of the scale marks 500 is -7μm to 7μm, and the detection range characterizing the cell alignment deviation is ±7μm.

[0192] The cell pairing mark group Y1 includes multiple sub-cell pairing mark groups 403 arranged in the horizontal direction. These are obtained by splitting multiple comb teeth arranged in the vertical direction, such as splitting the first cell pairing mark 103 on the array substrate and splitting the second cell pairing mark 203 located on the color filter substrate, thus combining the split cell pairing mark groups 403 to obtain multiple sub-cell pairing mark groups 403. Each sub-cell pairing mark group 403 corresponds to its own scale mark 500. After the multiple sub-cell pairing mark groups 403 are arranged in the horizontal direction, cell pairing deviations in the vertical direction can be detected based on the alignment of the comb teeth.

[0193] Based on the same inventive concept, this disclosure also provides a direction for measuring the cell misalignment of the display panel 400 in the above embodiments, referring to... Figure 10 As shown, a flowchart illustrating the steps of this method is presented. Figure 10 As shown, the specific steps may include:

[0194] Step S1001: Detect the alignment of the comb teeth of the first pair of box mark 103 and the second pair of box mark 203;

[0195] Step S1002: Based on the detection results, the cell alignment deviation between the first substrate 100 and the second substrate 200.

[0196] In this embodiment, after the first substrate 100 and the second substrate 200 have completed the cell alignment process, the resulting display panel 400 can be placed under an optical microscope to observe the alignment of the comb teeth of the first cell alignment mark 103 and the second cell alignment mark 203.

[0197] Specifically, one detection method is as follows: Figure 8 As shown, in the first pair of box markings 103, multiple comb teeth are of the same size, and the first interval distance between the multiple comb teeth is the same; in the second pair of box markings 203, multiple comb teeth are of the same size, and the second interval distance between the multiple comb teeth is the same; and the size of the comb teeth in the first pair of box markings 103 is the same as the size of the comb teeth in the second pair of box markings 203, and the first interval distance and the second interval distance are the same. Therefore, the box alignment deviation can be determined based on the offset between the misaligned comb teeth.

[0198] Among them, the display panel can be placed under an optical microscope to observe the alignment of the comb teeth of the first pair of box marks 103 and the second pair of box marks 203.

[0199] like Figure 8 As shown, the first pair of box markings 103 and the second pair of box markings 203 are not completely aligned, and there is a deviation between them, that is, the comb teeth of the two are misaligned. In this case, the box alignment deviation can be determined according to the offset between the misaligned comb teeth. For example, if the offset between the comb teeth is 0.5μm, the box alignment deviation can be determined to be 0.5.

[0200] Specifically, another detection method is as follows: Figure 9 As shown, in the first pair of box markings 103, multiple comb teeth are of the same size, and the first spacing distance between the multiple comb teeth is the same; in the second pair of box markings 203, multiple comb teeth are of the same size, and the second spacing distance between the multiple comb teeth is the same; and the size of the comb teeth in the first pair of box markings 103 and the size of the comb teeth in the second pair of box markings 203 are the same, but the first spacing distance and the second spacing distance are different. This difference can mean that the value of the first spacing distance is not equal to the value of the second spacing distance. The offset corresponding to the aligned comb teeth can then be used to determine the box alignment deviation.

[0201] In some embodiments, the offset corresponding to the aligned comb teeth can be directly characterized by the corresponding scale mark 500. Specifically, the target comb teeth for complete alignment can be determined from the first pair of box marks 103 and the second pair of box marks 203; the box alignment deviation is determined based on the scale value corresponding to the target scale mark 500. Figure 9 As shown, at scale mark 500 "1", the comb teeth of the first pair of box marks 103 and the second pair of box marks 203 are aligned. Assuming the deviation between the first and second interval distances is 0.5μm, from scale mark 500 "0" to scale mark 500 "1", it passes through three comb teeth, including comb teeth a1, a2, and a3 in the first pair of box marks 103, and comb teeth b1, b2, and b3 in the second pair of box marks 203. Since the difference in interval distance between these three pairs of comb teeth is 0.5μm, the offset when comb teeth b3 and a3 are aligned is 1μm, which indicates a 1μm deviation in the box alignment. This 1μm is exactly the scale value corresponding to scale mark 500. Therefore, the box alignment deviation can be determined directly based on the scale mark 500 corresponding to the aligned comb teeth.

[0202] Based on the same inventive concept, this disclosure also provides a display device, which may include the display panel described above.

[0203] Based on the same inventive concept, this disclosure also provides a method for manufacturing the above-mentioned display panel, which may specifically include the following steps:

[0204] Step S1: Provide a first substrate required for the first substrate, and sequentially form several structural layers on the first substrate according to the first process of the first substrate to obtain the first substrate; wherein, in the first patterning film layer process of the first process, at least one marking area in the border area of ​​the first substrate is formed in a comb-shaped first pair of box marks at one time; the first patterning film layer process means that a film layer needs to be patterned on the first substrate for the first time. If it is an array substrate, the film layer is generally the first metal film layer of the first substrate, such as the Gate film layer.

[0205] Step S2: Provide a second substrate required for the second substrate, and sequentially form several structural layers on the second substrate according to the second process of the second substrate to obtain the second substrate; wherein, in the first patterning film layer process of the second process, a comb-shaped second pair of cell marks are formed at the positions corresponding to at least one marking area at one time; the first patterning film layer process here means that a film layer needs to be patterned on the second substrate for the first time. If it is a color filter substrate, the film layer is generally a black matrix film layer.

[0206] Step S3: Align the first substrate and the second substrate to obtain the display panel.

[0207] Then, the alignment deviation of the display panel can be detected, and the detection method can be as described above. Figure 10 Follow the steps shown.

[0208] Finally, it should be noted that, unless otherwise defined, the terms "first," "second," and similar terms used herein do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Terms such as "connected" or "linked" are not limited to physical or mechanical connections but can include electrical connections, whether direct or indirect.

[0209] The above provides a detailed description of a display panel, a method for measuring cell deviation, and a display device provided by this disclosure. Specific examples have been used to illustrate the principles and implementation methods of this disclosure. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this disclosure. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this disclosure. Therefore, the content of this specification should not be construed as a limitation of this disclosure.

[0210] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0211] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

[0212] The terms "an embodiment," "embodiment," or "one or more embodiments" as used herein mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this disclosure. Furthermore, please note that the examples of the phrase "in one embodiment" do not necessarily all refer to the same embodiment.

[0213] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this disclosure may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0214] In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. This disclosure can be implemented by means of hardware comprising a plurality of different elements and by means of a suitably programmed computer. In a unit claim enumerating a plurality of means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

[0215] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A display panel, characterized by, include: First substrate and second substrate; The display panel includes a display area and a non-display area. At least one marking area is provided in the non-display area. The marking area includes at least one set of matching marks. The set of matching marks is used to detect matching deviation in a preset direction. The box-matching marking group includes: a first box-matching marking disposed on the side of the first substrate near the second substrate and in a comb-like shape, and a second box-matching marking disposed on the side of the second substrate near the first substrate and in a comb-like shape. Wherein, the comb teeth of the first pair of box marks face the second pair of box marks, and the comb teeth of the second pair of box marks face the first pair of box marks, and the length direction of the comb teeth is perpendicular to the preset direction; The non-display area includes a border area, which is located only on one side of the display area. The border area includes a sub-border area, and the at least one marking area is entirely located in the sub-border area. The fourth pair of box markers in the plurality of box marker groups includes: a plurality of sub-box marker groups arranged at intervals along the extension direction of the sub-border area, wherein the plurality of sub-box marker groups are obtained by segmenting the comb teeth of the first pair of box markers and the comb teeth of the second pair of box markers; Wherein, the preset direction corresponding to the fourth pair of box markings is perpendicular to the extension direction of the sub-border area; In the third pair of box marker groups, the first pair of box markers and the second pair of box markers include a plurality of continuous comb teeth. Wherein, the preset direction corresponding to the third pair of box marking groups is parallel to the extension direction of the sub-border area where it is located; The orthographic projection of the comb teeth in the first pair of box markings onto the second substrate overlaps with the comb teeth portion in the second pair of box markings.

2. The display panel of claim 1, wherein, The non-display area includes a border area, and the border area includes a sub-border area located on at least one side of the display area; Among them, multiple of the marked areas are located in all the sub-border areas.

3. The display panel of claim 1, wherein, The non-display area includes a border area, the border area includes a sub-border area located on one side of the display area, the sub-border area includes at least two marking areas, and the at least two marking areas are arranged near two different sides of the sub-border area, the two different sides being arranged opposite to each other in the extending direction of the sub-border area; Among them, at least two of the marked areas are used to detect the box alignment deviation in two mutually perpendicular preset directions.

4. The display panel according to claim 1, characterized in that, The marking area includes at least one pair of box marking groups, including a first pair of box marking groups and / or a second pair of box marking groups; the preset direction corresponding to the first pair of box marking groups is a first direction, and the preset direction corresponding to the second pair of box marking groups is a second direction; Wherein, the first direction and the second direction are two directions that are perpendicular to each other.

5. The display panel according to any one of claims 1-4, characterized in that, The spacing between the multiple comb teeth in the first pair of box markings is equal, and the multiple comb teeth have the same size; In the second pair of box markings, the spacing between the multiple comb teeth is equal, and the multiple comb teeth have the same size.

6. The display panel according to claim 1, characterized in that, The first spacing between any two adjacent comb teeth in the first pair of box markings is greater than or equal to 5 μm; the second spacing between any two adjacent comb teeth in the second pair of box markings is greater than or equal to 5 μm.

7. The display panel according to claim 6, characterized in that, The value of the first interval distance is not equal to the value of the second interval distance; the box pair mark group further includes: a plurality of scale marks; the plurality of scale marks are located on the side of the first box pair mark away from the second box pair mark, or on the side of the second box pair mark away from the first box pair mark; Wherein, two adjacent scale marks pass through at least two comb teeth, and the difference between the scale marks of two adjacent scale marks is the product of the difference between the first interval distance and the second interval distance and the number of comb teeth.

8. The display panel according to any one of claims 6 or 7, characterized in that, The first interval distance is different from the second interval distance, and the difference between the first interval distance and the second interval distance is greater than or equal to 0.2 μm and less than or equal to 2 μm.

9. The display panel according to claim 1, characterized in that, The overlapping region has a dimension greater than or equal to 2 μm in the length direction of the comb teeth, and is less than the length of the comb teeth.

10. The display panel according to claim 1, characterized in that, The first substrate is an array substrate; wherein the first pair of cell markers is disposed in the same layer as the metal film layer in the array substrate that is farthest from the second substrate.

11. The display panel according to claim 1 or 10, characterized in that, The second substrate is a color filter substrate; wherein the second cell marker is disposed in the same layer as the black matrix film layer of the color filter substrate.

12. The display panel according to any one of claims 1-4, characterized in that, The color of the first pair of box markers is different from the color of the second pair of box markers.

13. A method for measuring box deviation, characterized in that, Applied to a display panel as described in any one of claims 1 to 12, the measurement method includes: The alignment of the comb teeth between the first pair of box marks and the second pair of box marks is detected; Based on the detection results, the cell alignment deviation between the first substrate and the second substrate is obtained.

14. The measurement method according to claim 13, characterized in that, The process of obtaining the cell alignment deviation between the first substrate and the second substrate based on the detection results includes: In the first pair of box marks and the second pair of box marks, the target comb teeth that are fully aligned are determined; The box alignment deviation is determined based on the scale value corresponding to the target scale mark.

15. A display device, characterized in that, Includes the display panel described in any one of claims 1-12.

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