Display panel and display device

Abstract

The present application provides a display panel and a display device, which relate to the field of display technology and are used to solve the technical problem of low crack detection accuracy in display panels. The display panel is provided with an opening area and a crack detection ring provided along the circumferential edge of the opening area. The crack detection ring has a notch that disconnects the crack detection ring. The first end of the notch has a receiving area, and the second end of the notch has a protrusion. At least a portion of the protrusion is located within the receiving area. The receiving area and the protrusion engage with each other, and a preset gap is formed between the two. This makes it difficult for cracks extending in one direction to pass through the notch, thereby avoiding missed detection and improving the accuracy of crack detection.

Description

Technical Field

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

[0002] With the development of display technology, hardware such as camera modules are usually integrated on display panels to obtain image acquisition using camera modules. In related technologies, an opening area is usually set on the display panel, and a camera module is placed in the opening area. However, cracks are prone to appear on the edges of the opening area, and the cracks are prone to extend to the non-opening area of ​​the display panel, affecting the normal display of the display panel. In order to ensure the normal use of the display panel, a crack detection (Panel Crack Detection, abbreviated as PCD) line is provided in the display panel surrounding the opening area to detect whether there are cracks on the display panel. However, the crack detection line in the related technology has a detection blind spot, and the accuracy of crack detection is low. Summary of the Invention

[0003] In view of the above problems, embodiments of the present application provide a display panel and a display device for improving the accuracy of crack detection of the display panel.

[0004] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0005] A first aspect of an embodiment of the present application provides a display panel, which is provided with an opening area and a crack detection ring arranged along the circumferential edge of the opening area; the crack detection ring has a notch that disconnects the crack detection ring, the first end of the notch has a accommodating area, the second end of the notch has a protrusion, at least part of the protrusion is located in the accommodating area, the accommodating area is engaged with the protrusion, and there is a preset gap between the two.

[0006] In the display panel provided in the embodiments of the present application, a first end of the notch has an accommodating area, and a second end of the notch has a protruding portion. At least a portion of the protruding portion is located within the accommodating area, and the accommodating area and the protruding portion engage with each other with a predetermined gap. The cooperation between the accommodating area and the protruding portion makes it difficult for cracks extending in one direction to pass through the notch, thereby preventing missed detection and improving the accuracy of crack detection.

[0007] In a possible implementation, the crack detection ring is formed by a crack detection wire;

[0008] Preferably, a virtual straight line formed by two end points of the accommodating area intersects with the protruding portion.

[0009] In one possible implementation, the crack detection line includes a first lead, a first extension line, a first connecting line, a second extension line, a second connecting line, a third extension line and a second lead connected in sequence; wherein, the first lead is used to receive signals, the second lead is used to output signals, the second extension line forms an inner ring of the crack detection ring, the first extension line and the third extension form an outer ring of the crack detection ring, and the gap is formed between the first connecting line and the second connecting line.

[0010] In a possible implementation, the first extension line is parallel to the second extension line, the third extension line is parallel to the second extension line, and a distance between the first extension line and the second extension line is equal to a distance between the third extension line and the second extension line.

[0011] In a possible implementation, the distance between the inner ring of the crack detection ring and the edge of the opening area is 100 μm-400 μm, and the distance between the first connecting line and the second connecting line is 30 μm-50 μm.

[0012] In a possible implementation, the accommodating area is formed by bending the first connecting line, and the protruding portion is formed by bending the second connecting line.

[0013] In a possible implementation, the protrusion has a shape of a triangle, a rectangle, a square, a trapezoid, or a stepped rectangle, and the shape of the accommodating area matches the shape of the protrusion.

[0014] In a possible implementation, both the first connecting line and the second connecting line include a first radial segment, a circumferential segment, and a second radial segment that are sequentially connected.

[0015] A second aspect of an embodiment of the present application provides a display panel, which is provided with an opening area and at least two crack detection rings arranged along the circumferential edge of the opening area, each of the crack detection rings has a notch, and the notches of the at least two crack detection rings are staggered along the circumference of the opening area.

[0016] In the display panel provided in the embodiments of the present application, multiple crack detection rings are provided along the circumferential edge of the aperture area. The notches of each crack detection ring are staggered along the circumference of the aperture area, and the notches of each crack detection ring do not overlap in the circumferential direction of the aperture area. If a crack in the display panel can pass through the notch of one crack detection ring, the crack is unlikely to pass through the notches of other crack detection rings, thereby avoiding missed detection and improving crack detection accuracy.

[0017] A second aspect of an embodiment of the present application provides a display device, which includes the display panel as described above, and thus has the advantage of high accuracy in crack detection. The specific effects are described above and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 A structural diagram of a crack detection ring in the related art;

[0020] Figure 2 Schematic diagram of another structure of a crack detection ring in the related art;

[0021] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0022] Figure 4 is a schematic structural diagram of a display panel in an embodiment of the present application;

[0023] Figure 5 This is a schematic diagram of the first structure of the crack detection ring in the embodiment of the present application;

[0024] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0025] Figure 7 Schematic diagram of the second structure of the crack detection ring in the embodiment of the present application;

[0026] Figure 8 for Figure 7 A partial enlarged view of point C in the middle;

[0027] Figure 9 Schematic diagram of the third structure of the crack detection ring in the embodiment of the present application;

[0028] Figure 10 for Figure 9 A partial enlarged view of point D in the middle;

[0029] Figure 11 Schematic diagram of the fourth structure of the crack detection ring in the embodiment of the present application;

[0030] Figure 12 for Figure 11 A partial enlarged view of point E in the middle;

[0031] Figure 13 Schematic diagram of the fifth structure of the crack detection ring in the embodiment of the present application;

[0032] Figure 14 This is a sixth structural schematic diagram of the crack detection ring in the embodiment of the present application.

[0033] Description of reference numerals:

[0034] 100-display panel; 200-opening area;

[0035] 300-notch; 400-crack detection line;

[0036] 410 - first lead line; 420 - first extension line;

[0037] 430-first connecting line; 440-second extension line;

[0038] 450-second connecting line; 460-third extension line;

[0039] 470-second lead; 500-crack;

[0040] 600-touch electrode; 610-touch line;

[0041] 620-touch chip; 700-display chip;

[0042] 810-first crack detection line; 820-second crack detection line;

[0043] 821-third lead; 822-fourth extension line;

[0044] 823-Fourth lead. DETAILED DESCRIPTION

[0045] As described in the background art, display panels in related art have the problem of low crack detection accuracy. The inventors have discovered that the cause of this problem is that the crack detection line set in the display panel surrounds the opening area to form a crack detection ring. The crack detection ring has a gap, resulting in a detection blind spot in the crack detection ring. The specific analysis is as follows:

[0046] Reference Figure 1 When the crack detection ring includes a ring, a gap is formed between the two ends of the ring. Figure 1 When a crack 500 appears in the notch 300, the crack detection ring will not be affected by the crack 500, that is, the crack 500 in this area is difficult to detect, resulting in low crack detection accuracy.

[0047] Reference Figure 2When the crack detection ring includes two rings, the two rings are an inner ring and an outer ring, and the connecting line between the inner ring and the outer ring forms a line as shown in FIG. Figure 2 The notch 300 is shown. Figure 3 As shown in the partial enlarged view, when a crack 500 appears in the notch 300 , the crack detection ring will not be affected by the crack 500 , that is, the crack 500 in this area is difficult to detect, resulting in low crack detection accuracy.

[0048] In response to the above technical problems, in the display panel provided in the embodiment of the present application, the first end of the notch has an accommodating area, and the second end of the notch has a protrusion, at least part of the protrusion is located in the accommodating area, and is engaged with the accommodating area through the protrusion, and there is a preset gap between the two, so that cracks extending in one direction are difficult to pass through the notch, so as to avoid missed detection and improve the accuracy of crack detection.

[0049] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0050] An embodiment of the present application provides a display device, which may be a product or component with a display function, such as a smart bracelet, a navigator, a display, a mobile phone, a tablet computer, a personal digital assistant, etc., and includes the display panel described below.

[0051] Reference Figure 4 The display panel 100 is provided with an opening area 200, which can be a through hole or a blind hole. A camera module is provided in the opening area 200. A crack detection ring is provided on the circumferential edge of the opening area 200. Figure 4 As shown, the crack detection ring surrounds the opening area 200 , and there is a gap between the crack detection ring and the edge of the opening area 200 .

[0052] In some possible examples, the display panel 100 includes an array substrate, a pixel definition layer (PDL), an encapsulation layer, and a touch layer, which are stacked in sequence. The PDL has pixel openings, within which pixel cells are disposed. The array substrate is typically a thin film transistor (TFT) array substrate. A TFT array substrate generally includes a substrate and a thin film transistor layer disposed on the substrate.

[0053] Specifically, the substrate can be a glass substrate or a polyimide (PI) substrate. The thin-film transistor layer includes a first insulating layer disposed on the substrate. Gate lines and the gate electrodes of the thin-film transistors are disposed on the first insulating layer. The gate lines are arranged in a first direction and connected to the gate electrodes. A second insulating layer covers the gate lines and the gate electrodes. Data lines, the source electrodes, and the drain electrodes of the thin-film transistors are disposed on the second insulating layer. The data lines are arranged in a second direction and connected to the drain electrodes. The drain electrodes of the thin-film transistors are electrically connected to the pixel cells. Under the control of the gate lines, the thin-film transistors transmit data display signals input from the display chip via the data lines to the corresponding pixel cells of the thin-film transistors, thereby driving the display panel 100 for display. The display chip typically includes an integrated circuit (IC), which also controls the gate lines to provide scanning signals to the thin-film transistors, thereby turning the thin-film transistors on or off. A third insulating layer covers the data lines and the source electrodes and drain electrodes of the thin-film transistors. The third insulating layer typically includes a planarization layer, the top surface of which is flush.

[0054] It should be noted that the thin film transistor can be a bottom gate structure or a top gate structure, and can be an amorphous silicon (a-Si) thin film transistor, a low temperature polysilicon (LTPS) thin film transistor or an oxide thin film transistor, and the embodiments of the present application do not make specific limitations.

[0055] The pixel unit may include sub-pixels of different colors. For example, the pixel unit includes a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. Alternatively, the pixel unit includes a red sub-pixel R, a green sub-pixel G, a blue sub-pixel B, and a white sub-pixel W. Each sub-pixel includes a first electrode, a second electrode, and a light-emitting layer located between the first electrode and the second electrode. One of the first electrode and the second electrode is electrically connected to a thin film transistor, and the light-emitting layer is controlled to emit light through the thin film transistor. Exemplarily, the first electrode is located on the array substrate and is electrically connected to the thin film transistor. The first electrode may be an anode, and holes are generated in the anode. Correspondingly, the second electrode may be a cathode, and the cathode generates electrons. The holes generated by the anode and the electrons generated by the cathode recombine in the light-emitting layer to emit light. The light-emitting layer may include a stacked hole injection layer (HIL), a hole transport layer (HTL), an emitting material layer (EML), an electron transport layer (ETL) and an electron injection layer (EIL), wherein the hole injection layer is arranged on the first electrode.

[0056] The encapsulation layer is disposed on the pixel definition layer and pixel units to protect other underlying display panel 100 structures and prevent water and oxygen from corroding the light-emitting layer. The encapsulation layer is typically made of an inorganic material layer such as silicon oxide, silicon nitride, or methacrylate. Alternatively, the encapsulation layer may be a laminated structure of inorganic and organic material layers, with the organic material layer disposed between two adjacent inorganic material layers.

[0057] A touch layer is provided on the encapsulation layer, and the touch layer includes touch electrodes 600. The touch electrodes 600 form a grid structure, that is, the touch electrodes 600 include a first touch sub-electrode extending along a first direction and a second touch sub-electrode extending along a second direction, and the first touch sub-electrode and the second touch sub-electrode are arranged crosswise. The first touch sub-electrode and the second touch sub-electrode can both be made of metal materials to reduce the transmission delay of the electrical signal in the first touch sub-electrode and the second touch sub-electrode. Alternatively, the first touch sub-electrode and the second touch sub-electrode can both be made of transparent conductive materials, such as indium tin oxide (ITO) or graphene, etc., to reduce the reflection of light emitted by the pixel unit. The touch electrode 600 is electrically connected to the touch chip 620 through the touch line 610 ( Figure 4 (The connection between the touch electrodes 600, the touch wires 610, and the touch chip 620 is not shown in the figure), and the touch chip 620 sends a driving signal to the touch electrodes 600 or receives a sensing signal.

[0058] In some possible examples of the present application, the opening area 200 is set in the touch layer. For example, the opening area 200 passes through the touch electrode 600, and the opening area 200 has Figure 5 The symmetry axis Y is shown. The crack detection ring is also set on the touch layer, as shown in FIG. Figure 5 and Figure 6 As shown, the crack detection ring circumferentially surrounds the opening area 200. The crack detection ring has a notch 300, which makes the crack detection ring circumferentially disconnected, that is, the crack detection ring is not continuous along the circumference.

[0059] The notch 300 has two ends. The first end of the notch 300 has a receiving area, and the second end of the notch 300 has a protrusion. For example, the first end of the notch 300 can be Figure 5 and Figure 6 As shown on the left, the second end of the notch 300 can be Figure 5 and Figure 6 The right end is shown. At least a portion of the protrusion is located within the accommodating area, which engages with the protrusion. The accommodating area and the protrusion intersect in a direction away from the center of the crack detection ring. The shape of the accommodating cavity and the shape of the protrusion can match. A preset gap exists between the accommodating area and the protrusion. By adjusting the size of the preset gap, no straight line passes through the gap 300. As a result, when the crack 500 in the opening area 200 extends, the crack detection ring will be damaged, thereby allowing the crack 500 to be detected.

[0060] Specifically, a virtual straight line is formed between the two endpoints of the accommodation area. Figure 6 As shown by the middle dotted line, the protrusion intersects the virtual straight line, so that no straight line passing through the notch 300 exists in the notch 300 .

[0061] Based on the above embodiments, in some implementations of the present application, the crack detection ring is formed by a crack detection line 400, which extends and bends along the opening area 200 to form a crack detection ring. The crack detection ring has an open curve shape with two ends separated from each other.

[0062] Specifically, such as Figure 5 As shown, the crack detection line 400 includes a first lead 410, a first extension line 420, a first connection line 430, a second extension line 440, a second connection line 450, a third extension line 460, and a second lead 470 connected in sequence. The first lead 410 is used to receive signals, and the second lead 470 is used to output signals. The first lead 410 and the second lead 470 can be opposite to each other and symmetrical with respect to the symmetry axis Y. Figure 5As shown, there is a gap between the first lead 410 and the second lead 470, and the symmetry axis Y passes through the gap, that is, the symmetry axis Y is located between the first lead 410 and the second lead 470. The first lead 410 and the second lead 470 can be straight or L-shaped, and the shapes of the first lead 410 and the second lead 470 in the embodiment of the present application are not limited.

[0063] Continue to refer to Figure 5 , the second extension line 440 forms the inner ring of the crack detection ring, and the first extension line 420 and the third extension line 460 form the outer ring of the crack detection ring. It will be understood that the first extension line 420 and the third extension line 460 are located on the side of the second extension line 440 away from the hole area 200, that is, outside the second extension line 440. The first connecting line 430 and the second connecting line 450 are arranged opposite each other and separated to form the notch 300. That is, the first connecting line 430 is the first end of the notch 300, and the second connecting line 450 is the second end of the notch 300.

[0064] like Figure 5 As shown, first extension line 420 is parallel to second extension line 440, and third extension line 460 is parallel to second extension line 440. First extension line 420, second extension line 440, and third extension line 460 all extend along the circumference of opening area 200. The spacing between first extension line 420 and second extension line 440 is equal to the spacing between third extension line 460 and second extension line 440. It will be understood that first extension line 420 and third extension line 460 are symmetrically distributed relative to symmetry axis Y. For example, first extension line 420 is located to the left of symmetry axis Y, and third extension line 460 is located to the right of symmetry axis Y. First extension line 420 is an arc convex to the left, and third extension line 460 is an arc convex to the right.

[0065] In the embodiment of the present application, the distance between the inner ring of the crack detection ring and the edge of the opening area 200 is 100 μm-400 μm. For example, the center of the inner ring can coincide with the center of the opening area 200. When the projected length of the crack 500 in the radial direction of the opening area 200 is less than this distance, the crack 500 does not extend to the crack detection ring, and the crack 500 does not affect the crack detection ring. The crack 500 will not affect the normal display of the display panel 100. At this time, it is determined that the display panel 100 does not have a crack 500. Figure 6 As shown, when the crack 500 extends to the crack detection ring, the crack 500 damages one or more of the inner ring, outer ring, first connection line 430 or second connection line 450 of the crack detection ring, and it is determined that the display panel 100 has a crack 500.

[0066] Continue to refer to Figure 6The distance between the first connecting line 430 and the second connecting line 450 is 30 μm-50 μm. Under the premise of ensuring that the crack detection line 400 can be detected normally, the size of the gap 300 of the crack detection line 400 is minimized to reduce the possibility of missed detection. Figure 6 As shown, the first connecting line 430 is bent to form a receiving area, and the second connecting line 450 is bent to form a protruding portion.

[0067] In some possible examples of the present application, the first connecting line 430 and the second connecting line 450 each include a first radial segment, a circumferential segment, and a second radial segment connected in sequence, wherein the first radial segment and the second radial segment may extend in the radial direction of the opening area 200, and the circumferential segment extends in the circumferential direction of the opening area 200. Of course, the first radial segment and the second radial segment may also extend in the direction of the symmetry axis Y. Figure 5 As shown, the first radial segment and the circumferential segment of the first connecting line 430 form an accommodating area, and the first radial segment and the circumferential segment of the second connecting line 450 form a protrusion, so that the notch 300 is generally Z-shaped.

[0068] In other possible examples of the present application, the protrusion is shaped like a triangle, rectangle, square, trapezoid, or stepped rectangle, and the shape of the accommodating area matches the shape of the protrusion. The accommodating area is formed by bending the first connecting line 430. The shape of the accommodating area refers to the accommodating area and the virtual shape formed by the two end points of the accommodating area. The protrusion is formed by bending the second connecting line 450. The shape of the protrusion refers to the protrusion and the virtual shape formed by the two end points of the protrusion.

[0069] Specifically, such as Figure 7 and Figure 8 As shown, the shape of the protrusion is triangular, and accordingly, the shape of the receiving area is also triangular. Figure 9 and Figure 10 As shown in FIG, the shape of the protrusion is a stepped rectangle, and accordingly, the shape of the accommodating area is also a stepped rectangle. Alternatively, as shown in FIG. Figure 11 and Figure 12 As shown, the shape of the protrusion is rectangular, and accordingly, the shape of the accommodating area is also rectangular. Of course, the shape of the protrusion in the embodiment of the present application is not limited, for example, the protrusion can also be an arc shape.

[0070] The crack detection ring in the embodiment of the present application can be formed by a patterning process, that is, the first lead 410, the first extension line 420, the first connecting line 430, the second extension line 440, the second connecting line 450, the third extension line 460, and the second lead 470 are formed simultaneously. The patterning process generally includes depositing a film layer, applying a photoresist layer, exposing, developing, etching, and removing the photoresist layer.

[0071] The crack detection ring in the embodiment of the present application can perform crack detection in a variety of ways. In one possible detection method, for example, Figure 4 As shown, the first lead 410 and the second lead 470 of the crack detection line 400 are both connected to the display chip 700. The display chip 700 inputs a voltage to the first lead 410 and receives an output voltage or an output current from the second lead 470. When the crack detection line 400 is disconnected, the output voltage or output current from the second lead 470 is lower than a preset value or even zero, and it is determined that a crack 500 exists in the display panel 100.

[0072] In another possible detection method, the first lead 410 of the crack detection line 400 is connected to the display chip 700, and the second lead 470 is connected to the array substrate, such as a data line. The display chip 700 inputs a signal to the first lead 410, and the presence of a crack 500 in the display panel 100 is determined based on whether the pixel unit is illuminated. Specifically, when the crack detection line 400 is disconnected, the pixel unit is not illuminated, that is, there is no bright line in the display panel 100, and the presence of a crack 500 in the display panel 100 is determined.

[0073] In the display panel 100 provided in the embodiment of the present application, the first end of the notch 300 has an accommodating area, and the second end of the notch 300 has a protrusion. The protrusion is located within the accommodating area, and a virtual straight line formed by the two end points of the accommodating area intersects the protrusion. The coordination of the accommodating area and the protrusion prevents a straight line from passing through the notch 300. This makes it difficult for a crack 500 extending in one direction to pass through the notch 300, thereby preventing missed detection and improving the accuracy of crack 500 detection.

[0074] The embodiment of the present application further provides a display panel 100, which includes an opening area 200. The structure of the display panel 100 can be referred to above and will not be described in detail here. Figure 13 The opening area 200 has a symmetry axis Y, and at least two crack detection rings are arranged circumferentially of the opening area 200. Each crack detection ring has a notch 300 that disconnects it, and the notches 300 of the at least two crack detection rings are staggered along the circumference of the opening area 200.

[0075] In one possible embodiment, Figure 13 and Figure 14As shown, the display panel 100 includes two crack detection rings, each formed by a crack detection line. For ease of description, one of the two crack detection rings is defined as a first crack detection ring, and the other of the two crack detection rings is defined as a second crack detection ring. Exemplarily, the first crack detection ring is disposed around the opening area 200, and the second crack detection ring is disposed around the first crack detection ring, i.e., the second crack detection ring is further away from the opening area 200 than the first crack detection ring. The first crack detection ring is formed by a first crack detection line 810, and the second crack detection ring is formed by a second crack detection line 820.

[0076] In one possible example, Figure 13 As shown, the first crack detection line 810 includes a first lead 410, a first extension line 420, and a second lead 470, which are connected in sequence. The first lead 410 is used to receive signals, and the second lead 470 is used to output signals. The first extension line 420 extends along the circumference of the opening area 200. The first lead 410 and the second lead 470 can be opposite to each other and form an axially symmetrical pattern. The gap 300 of the first crack detection ring is formed between the first lead 410 and the second lead 470.

[0077] The second crack detection line 820 includes a third lead 821, a fourth extension line 822, and a fourth lead 823 connected in sequence, that is, the fourth extension line 822 extends along the circumference of the opening area 200. The gap 300 of the second crack detection ring is formed between the third lead 821 and the fourth lead 823. For example, the third lead 821 and the fourth lead 823 can form an axisymmetric pattern. Figure 13 As shown, the notch 300 of the first crack detection ring and the notch 300 of the second crack detection ring are staggered in the circumferential direction of the opening area.

[0078] It should be noted that in the embodiment of the present application, the first lead 410 and the second lead 470 of the first crack detection line 810 can be set in a different layer from the first extension line 420, and the third lead 821 and the fourth lead 823 of the second crack detection line 820 can be set in a different layer from the fourth extension line 822, so as to avoid the first lead 410 and the second lead 470 of the first crack detection line 810 and the third lead 821 and the fourth lead 823 of the second crack detection line 820 from crossing and being connected, thereby ensuring the normal operation of the first crack detection ring and the second crack detection ring.

[0079] In another possible example, Figure 14As shown, the first crack detection line 810 includes a first lead 410, a first extension line 420, a first connection line 430, a second extension line 440, a second connection line 450, a third extension line 460, and a second lead 470, which are connected in sequence. The first lead 410 is used to receive signals, and the second lead 470 is used to output signals. The first lead 410 and the second lead 470 can be opposite to each other, with an axis of symmetry Y located between the first lead 410 and the second lead 470, and the first lead 410 and the second lead 470 are symmetrical with respect to the axis of symmetry Y.

[0080] The second extension line 440 forms the inner ring of the first crack detection ring, while the first extension line 420 and the third extension line 460 form the outer ring of the first crack detection ring. Specifically, the first extension line 420 and the third extension line 460 are located on the side of the second extension line 440 that is away from the hole area 200, that is, outside the second extension line 440. The first connecting line 430 and the second connecting line 450 are arranged opposite each other and spaced apart to form the gap 300 of the first crack detection ring. The shape of the gap 300 is not limited.

[0081] The second crack detection line 820 includes a third lead 821, a fourth extension line 822, and a fourth lead 823, which are connected in sequence. The fourth extension line 822 forms the annular portion of the second crack detection ring, i.e., the fourth extension line 822 extends circumferentially along the opening area 200. The gap 300 of the second crack detection ring is formed between the third lead 821 and the fourth lead 823. For example, the first lead 410 and the second lead 470 of the first crack detection ring are disposed between the third lead 821 and the fourth lead 823. The third lead 821 and the fourth lead 823 are symmetrically distributed with respect to the symmetry axis Y. For example, the second crack detection line 820 is an axisymmetric pattern with respect to the symmetry axis Y.

[0082] It should be noted that, in the embodiment of the present application, the center of the second extension line 440 , the centers of the first extension line 420 and the third extension line 460 , the center of the fourth extension line 822 , and the center of the opening area 200 may coincide with each other.

[0083] In the display panel 100 provided in the embodiment of the present application, multiple crack detection rings are provided along the circumferential edge of the opening area 200. The notches 300 of each crack detection ring are staggered along the circumference of the opening area 200, and the notches 300 of each crack detection ring do not overlap in the circumferential direction of the opening area 200. When a crack 500 exists in the display panel 100 that can pass through the notch 300 of one crack detection ring, the crack 500 is unlikely to pass through the notches 300 of other crack detection rings, thereby avoiding missed detection and improving the accuracy of crack 500 detection.

[0084] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0085] It should be noted that phrases such as "one embodiment," "an embodiment," "exemplary embodiments," and "some embodiments" in this specification may indicate embodiments that may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0086] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0087] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0088] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0089] As used herein, the term "substrate" refers to the material onto which subsequent material layers are added. The substrate itself can be patterned. The material added atop the substrate can be patterned, or it can remain unpatterned. Furthermore, the substrate can include a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, etc. Alternatively, the substrate can be made of a non-conductive material (e.g., glass, plastic, or sapphire wafer, etc.).

[0090] As used herein, the term "layer" may refer to a portion of a material comprising an area having a certain thickness. A layer may extend over the entire underlying structure or overlying structure, or may have an extent that is smaller than the extent of the underlying or overlying structure. In addition, a layer may be an area of ​​a homogeneous or inhomogeneous continuous structure whose thickness is less than the thickness of the continuous structure. For example, a layer may be located between the top and bottom surfaces of the continuous structure or between any pairs of transverse planes at the top and bottom surfaces. A layer may extend laterally, vertically, and / or along a tapered surface. A substrate may be a layer, may include one or more layers therein, and / or may have one or more layers located thereon, above, and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductors and a contact layer (within which contacts, interconnects, and / or vias are formed) and one or more dielectric layers.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized in that: The display panel is provided with an opening area and a crack detection ring provided along the circumferential edge of the opening area; The crack detection ring has a notch that disconnects the crack detection ring, the first end of the notch has a accommodating area, the second end of the notch has a protrusion, at least part of the protrusion is located in the accommodating area, the accommodating area is engaged with the protrusion, and there is a preset gap between the two.

2. The display panel according to claim 1, wherein: The crack detection ring is formed by a crack detection wire.

3. The display panel according to claim 2, wherein: A virtual straight line formed by two end points of the accommodating area intersects the protruding portion.

4. The display panel according to any one of claims 1 to 3, wherein: The crack detection line includes a first lead line, a first extension line, a first connection line, a second extension line, a second connection line, a third extension line and a second lead line connected in sequence; Among them, the first lead is used to receive signals, the second lead is used to output signals, the second extension line forms the inner ring of the crack detection ring, the first extension line and the third extension form the outer ring of the crack detection ring, and the gap is formed between the first connecting line and the second connecting line.

5. The display panel according to claim 4, wherein: The first extension line is parallel to the second extension line, the third extension line is parallel to the second extension line, and a distance between the first extension line and the second extension line is equal to a distance between the third extension line and the second extension line.

6. The display panel according to claim 4, wherein: The distance between the inner ring of the crack detection ring and the edge of the opening area is 100 μm-400 μm, and the distance between the first connecting line and the second connecting line is 30 μm-50 μm.

7. The display panel according to claim 4, wherein: The accommodating area is formed by bending the first connecting line, and the protruding portion is formed by bending the second connecting line.

8. The display panel according to claim 7, wherein: The shape of the protrusion is a triangle, a rectangle, a square, a trapezoid or a stepped rectangle, and the shape of the accommodating area is adapted to the shape of the protrusion.

9. The display panel according to claim 7, wherein: The first connecting line and the second connecting line each include a first radial segment, a circumferential segment, and a second radial segment that are sequentially connected.

10. A display panel, characterized in that: The display panel is provided with an opening area and at least two crack detection rings arranged along the circumferential edge of the opening area, each of the crack detection rings has a notch, and the notches of the at least two crack detection rings are staggered along the circumference of the opening area.

11. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 10.

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