Display panel and detection method thereof, and display device

Abstract

The present invention relates to the field of display technology, and discloses a display panel and a detection method thereof, and a display device. The display panel includes a display area and a non-display area surrounding the display area; the non-display area includes at least one crack detection line, the crack detection line at least partially surrounds the display area, and one end of the crack detection line receives a detection signal; the display area includes a plurality of first detection lines, and one crack detection line is electrically connected to at least one first detection line; the non-display area also includes a plurality of detection pads, and the first detection line is electrically connected to the detection pad. The present invention can detect whether there are cracks in the display panel and locate the existence position of the cracks, and at the same time, it is conducive to realizing a narrow frame.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more specifically, to a display panel and a detection method thereof, and a display device. Background Art

[0002] At present, cracks are prone to appear at the edges of display panels. On the one hand, the appearance of cracks is caused by cutting stress during the cutting process of the display panel. In addition, for flexible display panels, when they are bent, if the radius of curvature is too small and exceeds the tolerable range of the flexible screen, cracks are also prone to appear at the edges. Cracks will cause the wiring at the corresponding position to break. Moreover, if the cracks extend from the edge of the display panel to the display area, it will also affect the wiring and circuits arranged in the display area, seriously affecting the display effect of the product. Detecting cracks on the edges of display panels before the display panels leave the factory becomes a very important link.

[0003] In the prior art, a crack detection module is usually added to the display panel, that is, a detection line and a circuit structure are added in the non-display area of ​​the display panel, thereby increasing the burden of the non-display area, resulting in an increase in the overall area of ​​the non-display area, and affecting the screen ratio. Summary of the invention

[0004] In view of this, the present invention provides a display panel and a detection method thereof, and a display device, which can detect whether there are cracks in the display panel and locate the position of the cracks, and at the same time, are conducive to achieving a narrow frame.

[0005] The present invention provides a display panel, comprising a display area and a non-display area surrounding the display area; the non-display area comprises at least one crack detection line, the crack detection line at least partially surrounds the display area, and one end of the crack detection line receives a detection signal; the display area comprises a plurality of first detection lines, and a crack detection line is electrically connected to at least one first detection line; the non-display area also comprises a plurality of detection pads, and the first detection lines are electrically connected to the detection pads.

[0006] Based on the same idea, the present invention also provides a display panel detection method for detecting the display panel provided by the present invention; the detection method comprises: providing a detection signal to a crack detection line; and determining the crack position in the non-display area according to the signal of the detection pad.

[0007] Based on the same idea, the present invention further provides a display device, including the display panel provided by the present invention.

[0008] Compared with the prior art, the display panel and the detection method thereof, and the display device provided by the present invention achieve at least the following beneficial effects:

[0009] The display panel provided by the present invention can be provided with a crack detection line in a non-display area of ​​the display panel, and one end of the crack detection line can receive a detection signal, a crack detection line is electrically connected to at least one first detection line, and the first detection line is electrically connected to a detection pad, wherein when there is no crack at the position where the crack detection line is located in the display panel, the detection pads corresponding to the first detection lines can all receive the detection signal. When a crack appears at the position where the crack detection line is located in the display panel, the detection signal cannot be transmitted to a part of the first detection line electrically connected to the crack detection line, and accordingly, the detection pad electrically connected to the part of the first detection line cannot receive the detection signal. Based on the setting of the crack detection line and the first detection line, the present invention transmits a detection signal to one end of the crack detection line when detecting whether there is a crack in the display panel, and determines whether there is a crack in the non-display area according to the signal of the detection pad. Moreover, the first detection line that cannot receive the detection signal can be determined according to the detection pad that cannot receive the detection signal, and the position of the crack can be located according to the position where the first detection line is connected to the crack detection line, so as to facilitate the subsequent targeted improvement of cutting and other process conditions. At the same time, the first detection line is located in the display area, which is beneficial to reducing the area of ​​the non-display area and realizing a narrow frame.

[0010] Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned technical effects at the same time.

[0011] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0013] Figure 1 is a plan view schematic diagram of a display panel provided by the present invention;

[0014] Figure 2 is a plan view schematic diagram of another display panel provided by the present invention;

[0015] Figure 3 yes Figure 2 A cross-sectional view of the display panel along the line AA';

[0016] Figure 4 is a plan view schematically showing another display panel provided by the present invention;

[0017] Figure 5 is a plan view schematically showing another display panel provided by the present invention;

[0018] Figure 6is a plan view schematically showing another display panel provided by the present invention;

[0019] Figure 7 is a plan view schematically showing another display panel provided by the present invention;

[0020] Figure 8 is a plan view schematically showing another display panel provided by the present invention;

[0021] Fig. 9 is a plan view schematically showing another display panel provided by the present invention;

[0022] Fig.10 is a plan view schematically showing another display panel provided by the present invention;

[0023] Fig.11 It is a plan schematic diagram of a display device provided by the present invention. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0025] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0026] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0027] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0028] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0029] Figure 1 is a schematic plan view of a display panel provided by the present invention, with reference to Figure 1 This embodiment provides a display panel, which includes a display area AA and a non-display area NA surrounding the display area AA, wherein the display area AA is used for display, and the non-display area NA is not used for display and can be used to set circuits and other devices.

[0030] The non-display area NA includes at least one crack detection line 10, the crack detection line 10 at least partially surrounds the display area AA, and one end of the crack detection line 10 receives a detection signal. When a crack appears in the area where the crack detection line 10 is located in the display panel, the crack detection line 10 will also break, so that the transmission of the detection signal on the crack detection line 10 is interrupted. When there is no crack in the area where the crack detection line 10 is located in the display panel, the crack detection line 10 can normally transmit the detection signal.

[0031] The display area AA includes a plurality of first detection lines 20 , one crack detection line 10 is electrically connected to at least one first detection line 20 , and the non-display area NA also includes a plurality of detection pads 30 , and the first detection lines 20 are electrically connected to the detection pads 30 .

[0032] When detecting whether there is a crack in the non-display area NA of the display panel, a detection signal is transmitted to one end of the crack detection line 10. When there is no crack at the position of the crack detection line 10 in the display panel, the crack detection line 10 is intact, and the detection signal is transmitted to the detection pad 30 electrically connected to the first detection line 20 through the first detection line 20 electrically connected to the crack detection line 10, that is, the detection pad 30 can receive the detection signal. When a crack appears at the position of the crack detection line 10 in the display panel, the crack detection line 10 is broken, so that the detection signal cannot be transmitted to part of the first detection line 20 electrically connected to the crack detection line 10, and accordingly, the detection pad 30 electrically connected to the part of the first detection line 20 cannot receive the detection signal. Therefore, when performing crack detection, if there are some detection pads 30 that cannot receive the detection signal, it can be explained that there is a crack in the display panel. Moreover, the first detection line 20 that cannot receive the detection signal can be determined according to the detection pad 30 that cannot receive the detection signal, so that the position of the crack can be located according to the position where the first detection line 20 is connected to the crack detection line 10.

[0033] Through the above crack detection process, it can be known that the display panel provided by the embodiment of the present invention can be provided with a crack detection line 10 in the non-display area NA of the display panel, and one end of the crack detection line 10 can receive a detection signal, and one crack detection line 10 is electrically connected to at least one first detection line 20, and the first detection line 20 is electrically connected to the detection pad 30, wherein when there is no crack at the position where the crack detection line 10 is located in the display panel, the detection pads 30 corresponding to each first detection line 20 can all receive the detection signal. When a crack appears at the position where the crack detection line 10 is located in the display panel, the detection signal cannot be transmitted to part of the first detection line 20 electrically connected to the crack detection line 10, and accordingly, the detection pad 30 electrically connected to the part of the first detection line 20 cannot receive the detection signal. Based on the setting of the crack detection line 10 and the first detection line 20, when detecting whether there is a crack in the display panel, the embodiment of the present invention transmits a detection signal to one end of the crack detection line 10, and whether there is a crack in the non-display area can be determined according to the signal of the detection pad 30.

[0034] Moreover, the first detection line 20 that cannot receive the detection signal can be determined based on the detection pad 30 that cannot receive the detection signal, and the position of the crack can be located based on the position where the first detection line 20 is connected to the crack detection line 10, so as to facilitate the subsequent targeted improvement of cutting and other process conditions.

[0035] Meanwhile, the first detection line 20 is located in the display area AA, which is beneficial to reducing the area of ​​the non-display area NA and realizing a narrow frame.

[0036] Figure 2 is a plan view of another display panel provided by the present invention, Figure 3 yes Figure 2 A cross-sectional view of the display panel along the line AA', referring to Figure 2 and Figure 3 In some optional embodiments, the display panel further includes a plurality of data lines D1, some of which are electrically connected to the data pad 40 through the dummy data line D2, and the dummy data line D1 is located in the display area AA. That is, the dummy data line D1 is arranged in the display area AA so that the data line D1 is electrically connected to the data pad 40, which effectively reduces the space occupied by the fan-out line connecting the data line D1 and the data pad 40 in the non-display area NA, which is beneficial to reducing the area of ​​the non-display area NA and realizing a narrow frame.

[0037] The display panel further includes a base substrate 51, a first metal layer 52 and a second metal layer 53, wherein the first metal layer 52 is located between the base substrate 52 and the second metal layer 53, the data line D1 is located in the first metal layer 52, and the dummy data line D2 is at least partially located in the second metal layer 53. The dummy data line D2 is located in the display area AA, so that the dummy data line D2 is at least partially located in the second metal layer 53, which can avoid the setting of the dummy data line D2 affecting the arrangement of the data line D1, and is conducive to reducing the difficulty of arranging the lines.

[0038] The first detection line 20 is at least partially located in the second metal layer 53, which effectively prevents the setting of the first detection line 20 from affecting the arrangement of the wiring in the display area AA, and is conducive to setting the first detection line 20 in the display area AA. At the same time, the process of setting the dummy data line D2 can be reused to set the first detection line 20, which is conducive to reducing the process and reducing the production cost.

[0039] It is understandable that part of the first detection line 20 can use other metal layers as bridge settings to avoid the setting of the first detection line 20 affecting the arrangement of the wiring in the display area AA. The specific setting method can be set according to actual needs, and the present invention will not go into details here.

[0040] Continue to refer Figure 1 In some optional embodiments, the crack detection line 10 includes a plurality of test points 11 , and the first detection line 20 is electrically connected to the test points 11 in a one-to-one correspondence.

[0041] Specifically, the crack detection line 10 includes a plurality of test points 11. When a crack occurs at the position of the crack detection line 10 in the display panel, the crack detection line 10 is broken, so that the detection signal cannot be transmitted to some of the test points 11, that is, the detection signal cannot be transmitted to the first detection line 20 electrically connected to the part of the test points 11, and accordingly, the detection pad 30 electrically connected to the part of the first detection line 20 cannot receive the detection signal. Therefore, when performing crack detection, if there are some detection pads 30 that cannot receive the detection signal, it can be explained that there is a crack in the display panel. Moreover, it can be determined according to whether the detection pad 30 can receive the detection signal which first detection lines 20 can receive the detection signal and which first detection lines 20 cannot receive the detection signal. Accordingly, it can be determined which test points 11 in the crack detection line 10 can receive the detection signal and which test points 11 in the crack detection line 10 cannot receive the detection signal. When a certain test point 11 can receive the detection signal and a test point 11 adjacent to the test point 11 cannot receive the detection signal, it can be determined that the position of the crack is located between the two test points 11.

[0042] Figure 4 is a plan view of another display panel provided by the present invention, referring to Figure 4In some optional embodiments, the test points 11 on the crack detection line 10 are evenly arranged.

[0043] Specifically, in the embodiment of the present invention, by setting the test point 11 on the crack detection line 10, and by setting different first detection lines 20 to be electrically connected to different test points 11, signal detection is performed based on each detection pad 30 electrically connected to each first detection line 20 to determine the position of the crack. By evenly setting the test points 11 on the crack detection line 10, each part of the crack detection line 10 can be detected, which is conducive to locating the position of the crack.

[0044] It should be noted that Figure 4 An arrangement of the test points 11 on the crack detection line 10 is exemplarily shown. In other embodiments of the present invention, the number of the test points 11 on the crack detection line 10 and the spacing between the test points 11 can be set according to actual needs, and the present invention will not go into details here.

[0045] Figure 5 is a plan view of another display panel provided by the present invention, referring to Figure 5 In some optional embodiments, the display panel provided in this embodiment is a special-shaped display panel, and the non-display area NA in the special-shaped display panel includes at least one conventional non-display area NA1 and at least one special-shaped non-display area NA2. The edge where the conventional non-display area NA1 and the display area AA meet is the first edge A1, and the edge where the special-shaped non-display area NA2 and the display area AA meet is the special-shaped edge A2. The first edge A1 extends along the first direction X or the second direction Y, and the extension direction of the special-shaped edge A2 intersects with both the first direction X and the second direction Y, and the first direction X intersects with the second direction Y. Optionally, the first direction X and the second direction Y are perpendicular to each other. That is, the special-shaped edge A2 neither extends along the first direction X nor the second direction Y. It should be noted that Figure 5 The shaped edge A2 is exemplarily shown as a curved line segment. In other embodiments of the present invention, the shaped edge A2 may also be an oblique line segment that does not extend along the first direction X or the second direction Y, or other irregular line segments, which will not be described in detail in the present invention.

[0046] Along the extension direction of the edge of the display area AA, the distance between two adjacent test points 11 in the special-shaped non-display area NA2 is smaller than the distance between two adjacent test points 11 in the conventional non-display area NA1.

[0047] Specifically, when cutting to form a display panel, cracks are prone to appear in the irregular non-display area NA2. The distance between two adjacent test points 11 in the irregular non-display area NA2 can be reduced, thereby increasing the number of test points 11 on the portion of the crack detection line 10 located in the irregular non-display area NA2. The detection intensity of cracks in the irregular non-display area NA2 can be increased, which is beneficial for determining the position of cracks in the irregular non-display area NA2, facilitating the analysis of the position of cracks, and achieving rapid positioning of cracks, thereby improving analysis timeliness.

[0048] Figure 6 is a plan view of another display panel provided by the present invention, referring to Figure 6 , in some optional embodiments, the crack detection line 10 includes a first winding segment 12 located in the special-shaped non-display area NA2;

[0049] The first winding segment 12 includes a plurality of first sub-segments 121 . The extending direction of the first sub-segments 121 is the same as the extending direction of the irregular edge A2 . The first sub-segments 121 are arranged along the direction from the display area AA to the irregular non-display area NA2 .

[0050] Specifically, when the display panel is cut, cracks are likely to appear in the irregular non-display area NA2. The portion of the crack detection line 10 located in the irregular non-display area NA2 is the first winding segment 12. The first winding segment 12 is a winding structure including a plurality of first sub-segments 121, which effectively increases the crack detection range of the irregular non-display area NA2 and improves the accuracy of the crack detection results of the irregular non-display area NA2.

[0051] Figure 7 is a plan view of another display panel provided by the present invention, referring to Figure 7 In some optional embodiments, the display panel provided in this embodiment is a bendable display panel, and the non-display area NA in the bendable display panel includes a bendable area NA3 and a non-bending area NA4.

[0052] Along the extension direction of the edge of the display area AA, the distance between two adjacent test points 11 in the bendable area NA3 is smaller than the distance between two adjacent test points 11 in the non-bending area NA4.

[0053] Specifically, since the bendable area NA3 is in a bent state when the bendable display panel is bent, cracks are likely to appear in the bendable area NA3. The distance between two adjacent test points 11 in the bendable area NA3 can be reduced, thereby increasing the number of test points 11 on the part of the crack detection line 10 located in the bendable area NA3. The detection intensity of cracks in the bendable area NA3 can be increased, which is beneficial to determine the position of cracks in the bendable area NA3, facilitates the analysis of the position of cracks, and can achieve rapid positioning of cracks, thereby improving the analysis time efficiency.

[0054] It should be noted that Figure 7 An arrangement of the test points 11 on the portion of the crack detection line 10 located in the bendable area NA3 and the portion of the crack detection line 10 located in the non-bending area NA4 is exemplarily shown. In other embodiments of the present invention, the number of the test points 11 on the crack detection line 10 and the spacing between the test points 11 can be set according to actual needs, and the present invention will not go into details here.

[0055] Figure 8 is a plan view of another display panel provided by the present invention, referring to Figure 8 , in some optional embodiments, the crack detection wire 10 includes a second winding segment 13 located in the bendable area NA3;

[0056] The edge where the bendable area NA3 and the display area AA meet is the second edge A3;

[0057] The second winding segment 13 includes a plurality of second sub-segments 131 . The extending direction of the second sub-segments 131 is the same as the extending direction of the second edge A3 , and the second sub-segments 131 are arranged along the direction from the display area AA to the bendable area NA3 .

[0058] Specifically, cracks are prone to appear in the bendable area NA3. The part of the crack detection line 10 located in the bendable area NA3 is the second winding segment 13. The second winding segment 13 is a winding structure including multiple second sub-segments 131, which effectively increases the crack detection range of the bendable area NA3 and improves the accuracy of the crack detection results in the bendable area NA3.

[0059] Fig. 9 is a plan view of another display panel provided by the present invention, referring to Fig. 9 In some optional embodiments, the display panel is a stretchable display panel, and the crack detection line 10 is at least partially a bent line.

[0060] Specifically, the display panel provided in this embodiment is a stretchable display panel, which can be stretched according to the original planar shape, and the crack detection line 10 is at least partially a bent line, thereby avoiding the crack detection line 10 being pulled and broken when the stretchable display panel is stretched, thereby affecting the accuracy of the crack detection result.

[0061] It should be noted that Fig. 9 It is exemplarily shown that the parts of the crack detection line 10 located on both sides of the display area AA along the first direction X are bent lines. In other embodiments of the present invention, other parts of the crack detection line 10 may also be bent lines, and the bent lines may be serpentine lines and other structures, which will not be described in detail in the present invention.

[0062] Fig.10 is a plan view of another display panel provided by the present invention, referring to Fig.10 In some optional embodiments, the non-display area NA includes a detection circuit 60 , the detection circuit 60 includes a plurality of detection units 61 , and different first detection lines 20 are electrically connected to different detection units 61 .

[0063] Specifically, when detecting whether there is a crack in the non-display area NA of the display panel, a detection signal is transmitted to one end of the crack detection line 10. When there is no crack at the position of the crack detection line 10 in the display panel, the crack detection line 10 is intact, and the detection signal is transmitted to the detection unit 61 electrically connected to the first detection line 20 through the first detection line 20 electrically connected to the crack detection line 10, and the detection unit 61 can work normally. When a crack appears at the position of the crack detection line 10 in the display panel, the crack detection line 10 is broken, so that the detection signal cannot be transmitted to part of the first detection line 20 electrically connected to the crack detection line 10, and accordingly, the detection unit 61 electrically connected to the part of the first detection line 20 cannot receive the detection signal, so that the part of the detection unit 61 cannot work normally. Therefore, when performing crack detection, if there is a part of the detection unit 61 that cannot work normally, it can be said that there is a crack in the display panel. Moreover, the first detection line 20 that cannot receive the detection signal can be determined according to the detection unit 61 that cannot work normally, so that the position of the crack can be located according to the position where the first detection line 20 is connected to the crack detection line 10.

[0064] This embodiment provides a display panel detection method, which is used to detect the display panel provided by the above embodiment of the present invention. Figure 1 .

[0065] The detection method includes: providing a detection signal to the crack detection line; and determining the crack position in the non-display area according to the signal of the detection pad.

[0066] Specifically, when detecting whether there is a crack in the non-display area NA of the display panel, a detection signal is transmitted to one end of the crack detection line 10. When there is no crack at the position of the crack detection line 10 in the display panel, the crack detection line 10 is intact, and the detection signal is transmitted to the detection pad 30 electrically connected to the first detection line 20 through the first detection line 20 electrically connected to the crack detection line 10, that is, the detection pad 30 can receive the detection signal. When a crack appears at the position of the crack detection line 10 in the display panel, the crack detection line 10 is broken, so that the detection signal cannot be transmitted to the part of the first detection line 20 electrically connected to the crack detection line 10, and accordingly, the detection pad 30 electrically connected to the part of the first detection line 20 cannot receive the detection signal. Therefore, when performing crack detection, if there is a part of the detection pad 30 that cannot receive the detection signal, it can be said that there is a crack in the display panel. Moreover, the first inspection line 20 that cannot receive the inspection signal can be determined based on the inspection pad 30 that cannot receive the inspection signal, so that the position of the crack can be located based on the position where the first inspection line 20 is connected to the crack detection line 10.

[0067] Through the above crack detection process, it can be known that the display panel provided by the embodiment of the present invention can be provided with a crack detection line 10 in the non-display area NA of the display panel, and one end of the crack detection line 10 can receive a detection signal, and one crack detection line 10 is electrically connected to at least one first detection line 20, and the first detection line 20 is electrically connected to the detection pad 30, wherein when there is no crack at the position where the crack detection line 10 is located in the display panel, the detection pads 30 corresponding to each first detection line 20 can all receive the detection signal. When a crack appears at the position where the crack detection line 10 is located in the display panel, the detection signal cannot be transmitted to part of the first detection line 20 electrically connected to the crack detection line 10, and accordingly, the detection pad 30 electrically connected to the part of the first detection line 20 cannot receive the detection signal. Based on the setting of the crack detection line 10 and the first detection line 20, when detecting whether there is a crack in the display panel, the embodiment of the present invention transmits a detection signal to one end of the crack detection line 10, and whether there is a crack in the non-display area can be determined according to the signal of the detection pad 30.

[0068] Moreover, the first detection line 20 that cannot receive the detection signal can be determined based on the detection pad 30 that cannot receive the detection signal, and the position of the crack can be located based on the position where the first detection line 20 is connected to the crack detection line 10, so as to facilitate the subsequent targeted improvement of cutting and other process conditions.

[0069] Moreover, the first detection line 20 is located in the display area AA, which is beneficial to reducing the area of ​​the non-display area NA and realizing a narrow frame.

[0070] In some alternative embodiments, please refer to Fig.11 , Fig.111 is a schematic plan view of a display device provided by the present invention. The display device 1000 provided by this embodiment includes the display panel 100 provided by the above embodiment of the present invention. Fig.11 The embodiment only takes a mobile phone as an example to illustrate the display device 1000. It can be understood that the display device 1000 provided in the embodiment of the present invention can also be a computer, a television, a car display device or other display device 1000 with a display function, and the present invention does not specifically limit this. The display device 1000 provided in the embodiment of the present invention has the beneficial effects of the display panel 100 provided in the embodiment of the present invention. For details, please refer to the specific description of the display panel 100 in the above embodiments, and this embodiment will not be repeated here.

[0071] It can be seen from the above embodiments that the display panel and the detection method thereof, and the display device provided by the present invention achieve at least the following beneficial effects:

[0072] The display panel provided by the present invention can be provided with a crack detection line in a non-display area of ​​the display panel, and one end of the crack detection line can receive a detection signal, a crack detection line is electrically connected to at least one first detection line, and the first detection line is electrically connected to a detection pad, wherein when there is no crack at the position where the crack detection line is located in the display panel, the detection pads corresponding to the first detection lines can all receive the detection signal. When a crack appears at the position where the crack detection line is located in the display panel, the detection signal cannot be transmitted to a part of the first detection line electrically connected to the crack detection line, and accordingly, the detection pad electrically connected to the part of the first detection line cannot receive the detection signal. Based on the setting of the crack detection line and the first detection line, the present invention transmits a detection signal to one end of the crack detection line when detecting whether there is a crack in the display panel, and determines whether there is a crack in the non-display area according to the signal of the detection pad. Moreover, the first detection line that cannot receive the detection signal can be determined according to the detection pad that cannot receive the detection signal, and the position of the crack can be located according to the position where the first detection line is connected to the crack detection line, so as to facilitate the subsequent targeted improvement of cutting and other process conditions. At the same time, the first detection line is located in the display area, which is beneficial to reducing the area of ​​the non-display area and realizing a narrow frame.

[0073] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A display panel, characterized in that: comprising a display area and a non-display area surrounding the display area; The non-display area includes at least one crack detection line, the crack detection line at least partially surrounds the display area, and one end of the crack detection line receives a detection signal; The display area includes a plurality of first detection lines, and one of the crack detection lines is electrically connected to at least one of the first detection lines; The non-display area further includes a plurality of detection pads, and the first detection line is electrically connected to the detection pads; The display panel further comprises a plurality of data lines, some of which are electrically connected to the data pads via dummy data lines, and the dummy data lines are located in the display area; The display panel further includes a base substrate, a first metal layer and a second metal layer, wherein the first metal layer is located between the base substrate and the second metal layer, the data line is located in the first metal layer, and the dummy data line is at least partially located in the second metal layer; The first detection line is at least partially located in the second metal layer.

2. The display panel according to claim 1, characterized in that: The crack detection line includes a plurality of test points, and the first detection line is electrically connected to the test points in a one-to-one correspondence.

3. The display panel according to claim 2, characterized in that: The test points on the crack detection line are evenly arranged.

4. The display panel according to claim 2, characterized in that: The non-display area includes at least one regular non-display area and at least one irregular non-display area, the edge where the regular non-display area and the display area meet is a first edge, the edge where the irregular non-display area and the display area meet is an irregular edge, the first edge extends along a first direction or a second direction, the extending direction of the irregular edge intersects both the first direction and the second direction, and the first direction intersects the second direction; Along the extension direction of the edge of the display area, the distance between two adjacent test points in the special-shaped non-display area is smaller than the distance between two adjacent test points in the conventional non-display area.

5. The display panel according to claim 4, characterized in that: The crack detection line includes a first winding section located in the irregular non-display area; The first winding segment includes a plurality of first sub-segments, the extension direction of the first sub-segments is the same as the extension direction of the special-shaped edge, and the first sub-segments are arranged in a direction from the display area to the special-shaped non-display area.

6. The display panel according to claim 2, characterized in that: The non-display area includes a bendable area and a non-bending area; Along the extension direction of the edge of the display area, the distance between two adjacent test points in the bendable area is smaller than the distance between two adjacent test points in the non-bending area.

7. The display panel according to claim 6, characterized in that: The crack detection line includes a second winding section located in the bendable area; The edge where the bendable area and the display area meet is a second edge; The second winding segment includes a plurality of second sub-segments, the extension direction of the second sub-segments is the same as the extension direction of the second edge, and the second sub-segments are arranged along a direction from the display area to the bendable area.

8. The display panel according to claim 2, characterized in that: The display panel is a stretchable display panel, and at least a portion of the crack detection line is a bent line.

9. The display panel according to claim 1, characterized in that: The non-display area includes a detection circuit, and the detection circuit includes a plurality of detection units; Different of the first detection lines are electrically connected to different of the detection units.

10. A method for detecting a display panel, characterized in that: Used to detect the display panel according to any one of claims 1 to 9; The detection method comprises: providing a detection signal to the crack detection line; The crack position in the non-display area is determined according to the signal of the detection pad.

11. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 9.

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