Display panel and display device

Abstract

The utility model provides a display panel and a display device. According to the display panel, at least one test wire comprises a first part and a second part in an area between the edge of the display panel and a binding terminal, the end, away from the second part, of the first part is connected with the binding terminal, and the end, away from the first part, of the second part is located at the edge of the display panel; the first part and the second part are separated, so that when water and oxygen invade into the test wiring, the first part and the second part are separated, the invasion path of the water and oxygen is blocked, the water and oxygen cannot invade into the binding terminal and the signal wiring in the surface, the water and oxygen blocking capability of the display panel is improved, and the yield of the display panel is improved.

Description

Technical Field

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

[0002] With the development of display technology, the demand for narrow-frame display devices is getting higher and higher. In the process of preparing display devices, in order to improve the yield of display devices, test terminals are set on the display devices, and the binding terminals are connected through test traces. Then, signals are input to the test terminals to test the signal traces in the display devices. In order to increase the screen-to-body ratio, existing display devices set the test terminals outside the display panel. This will cause the test traces to be cut off and the metal section to be exposed at the cut section when the display motherboard is cut to form a display panel, causing water vapor to corrode along the metal cut section and enter the surface, thereby causing the binding terminals to be corroded, affecting the signal transmission of the display device, and then causing poor display problems.

[0003] Therefore, the existing display devices have a technical problem that water vapor invades from the test wiring section to the binding terminal, resulting in poor display. Utility Model Content

[0004] The embodiments of the utility model provide a display panel and a display device, which are used to solve the technical problem that water vapor intrudes from the test wiring section to the binding terminal of the existing display device, resulting in poor display.

[0005] The present invention provides a display panel, which includes:

[0006] Display area;

[0007] a non-display area, arranged on at least one side of the display area, the non-display area comprising a binding area, wherein a plurality of binding terminals and test traces connected to the binding terminals are arranged in the binding area, and the test traces extend to the edge of the display panel;

[0008] Among them, in the area between the edge of the display panel and the binding terminal, at least one of the test traces includes a first part and a second part, an end of the first part away from the second part is connected to the binding terminal, an end of the second part away from the first part is located at the edge of the display panel, and the first part is disconnected from the second part.

[0009] In some embodiments, the display panel includes:

[0010] substrate;

[0011] A first metal layer is disposed on one side of the substrate;

[0012] A gate insulating layer, disposed on a side of the first metal layer away from the substrate;

[0013] A second metal layer is disposed on a side of the gate insulating layer away from the first metal layer;

[0014] A passivation layer, disposed on a side of the second metal layer away from the gate insulating layer;

[0015] At least one of the first metal layer and the second metal layer includes the test trace, the display panel includes a fracture between the first portion and the second portion, and the fracture at least penetrates the passivation layer.

[0016] In some embodiments, the first metal layer includes the test trace, the passivation layer is disposed on the gate insulating layer in a region between the edge of the display panel and the binding terminal, and the fracture penetrates the passivation layer, the gate insulating layer and the first metal layer.

[0017] In some embodiments, the display panel also includes a pixel electrode layer, which is arranged on a side of the passivation layer away from the second metal layer, and the binding terminal includes a first binding part and a second binding part, the first binding part is connected to the second binding part, the first binding part is arranged on the first metal layer, and the second binding part is arranged on the pixel electrode layer.

[0018] In some embodiments, the second metal layer includes the test trace, the passivation layer is disposed on the second metal layer, and the fracture penetrates the passivation layer and the second metal layer.

[0019] In some embodiments, the length of the break is one tenth to one half of the length of the second portion.

[0020] In some embodiments, the length of the first portion is greater than or equal to the length of the second portion.

[0021] In some embodiments, the test traces include common test traces, data test traces, and scan test traces, and at least one of the common test traces, the data test traces, and the scan test traces includes the first portion and the second portion.

[0022] In some embodiments, the data test trace includes a first data test trace, a second data test trace, and a third data test trace, and at least one of the first data test trace, the second data test trace, and the third data test trace includes the first portion and the second portion.

[0023] Meanwhile, an embodiment of the utility model provides a display device, which includes a display panel as described in any one of the above embodiments.

[0024] Beneficial effect: The utility model provides a display panel and a display device; the display panel makes at least one test line include a first part and a second part in the area between the edge of the display panel and the binding terminal, the end of the first part away from the second part is connected to the binding terminal, the end of the second part away from the first part is located at the edge of the display panel, and the first part is disconnected from the second part, so that when water and oxygen invade the test line, the first part and the second part are disconnected, blocking the invasion path of water and oxygen, and water and oxygen cannot invade the binding terminal and the signal line within the surface, thereby improving the water and oxygen barrier capability of the display panel and improving the yield of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0026] Figure 1 A schematic diagram of a comparative display device provided in an embodiment of the utility model.

[0027] Figure 2 A schematic diagram of a comparative display panel provided in an embodiment of the present utility model.

[0028] Figure 3 A schematic diagram of a display panel provided in an embodiment of the present utility model.

[0029] Figure 4 A cross-sectional view of a display area of ​​a display panel provided in an embodiment of the present utility model.

[0030] Figure 5 A first cross-sectional view of a binding area of ​​a display panel provided in an embodiment of the present utility model.

[0031] Figure 6 A second cross-sectional view of the binding area of ​​the display panel provided in an embodiment of the present utility model.

[0032] Figure 7 A schematic diagram of a display motherboard provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0034] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0038] like Figure 1 , Figure 2 As shown, in order to explain the principle of the technical problem solved by the embodiment of the utility model, a comparative display device is provided, which cannot be used as an existing display device in the field. Figure 1 As shown, the comparative display device 1 includes a plurality of comparative display panels 11 ( Figure 1 Only one comparison display panel 11 is shown in the figure. In order to achieve a narrow frame, the comparison display panel 11 will have a panel test terminal 114 set outside the comparison display panel 11, specifically between adjacent comparison display panels 11 of the comparison display device 1. By connecting the signal trace 111 of the comparison display panel 11 to the signal terminal 112, and connecting the test line 113 to the panel test terminal 114 and the signal terminal 112, the panel test terminal 114 is electrically connected to the signal trace 111, so that the signal trace 111 can be tested. After the test is completed, the comparison display device 1 needs to be cut into multiple comparison display panels 11, specifically as shown in FIG. Figure 1 As shown, cutting will be performed along the cutting line 115, but this will cause the test line 113 to be exposed in the cutting section of the comparison display panel 11; Figure 2 As shown, the comparative display panel 11 includes a substrate 121, a gate metal layer 122, a first insulating layer 123 and a second insulating layer 124. In the cut section of the comparative display panel 11, water vapor will invade along the section of the gate metal layer 122 ( Figure 2 The arrow 125 shows the direction of water vapor intrusion), causing water vapor to corrode along the gate metal layer into the surface, resulting in corrosion of the signal terminal and even the signal wiring in the display area, causing abnormal signals of the display device, and then causing poor display. Therefore, the existing display device has the technical problem that water vapor invades from the test wiring section to the binding terminal, causing poor display.

[0039] In view of the above technical problems, embodiments of the present invention provide a display panel and a display device to solve the above technical problems.

[0040] like Figure 3As shown, an embodiment of the utility model provides a display panel, the display panel 2 includes a display area 21 and a non-display area 22, the non-display area 22 is arranged on at least one side of the display area 21, the non-display area 22 includes a binding area 221, a plurality of binding terminals 24 and a test trace 25 connected to the binding terminals 24 are arranged in the binding area 221, and the test trace 25 extends to the edge of the display panel 2;

[0041] Among them, in the area between the edge of the display panel 2 and the binding terminal 24, at least one of the test traces 25 includes a first part 25a and a second part 25b, wherein one end of the first part 25a away from the second part 25b is connected to the binding terminal 24, and one end of the second part 25b away from the first part 25a is located at the edge of the display panel 2, and the first part 25a is disconnected from the second part 25b.

[0042] An embodiment of the utility model provides a display panel, which includes at least one test line including a first part and a second part in a region between an edge of the display panel and a binding terminal, wherein an end of the first part away from the second part is connected to the binding terminal, an end of the second part away from the first part is located at the edge of the display panel, and the first part is disconnected from the second part. Therefore, when water and oxygen invade the test line, the first part and the second part are disconnected, thereby blocking the invasion path of water and oxygen, and water and oxygen cannot invade the binding terminal and the signal line within the surface, thereby improving the water and oxygen barrier capability of the display panel and improving the yield of the display panel.

[0043] Specifically, the display panel may be a liquid crystal display panel, specifically an in-plane switching (IPS) type liquid crystal display panel, a horizontal field switching (HFS) type liquid crystal display panel, a twisted nematic (TN) type liquid crystal display panel, a super twisted nematic (STN) type liquid crystal display panel, a vertical alignment (VA) type liquid crystal display panel, and a fringe field switching (FFS) type liquid crystal display panel. However, the embodiments of the utility model are not limited thereto, and when other types of display panels include the structure described in the embodiments of the utility model, the display panel may also be other types of display panels, for example, the display panel may be an organic light emitting diode display panel.

[0044] Specifically, the non-display area can be set on one side of the display area, or on multiple sides of the display area, depending on the different designs of the display panel. The embodiments of the utility model are not limited to this. The non-display area can be set on the front side of the display panel, or on the back side of the display panel by bending or folding.

[0045] Specifically, Figure 3 As shown, the non-display area 22 includes an upper border area (not marked), a left border area (not marked), a right border area (not marked) and a binding area 221 which are arranged around the display area 21 .

[0046] Specifically, Figure 3 Only one scan line 231 is shown to be connected to the binding terminal, and other scan lines 231 may also be connected to the binding terminal.

[0047] Specifically, Figure 3 As shown, the display panel 2 includes a scan line 231, a data line 232 and a common electrode line 233. It can be understood that the common electrode line 233 is connected to a common electrode, and the common electrode can be provided on the entire surface. Figure 3 Only one common electrode line 233 is shown in the figure, and the actual common electrode lines may be arranged on the entire surface of the display area.

[0048] At the same time, generally speaking, the wiring part located in the display area will be named as the scan line 231, the data line 232 and the common electrode line 233, and the part located outside the display area will be named as the fan-out line and the connecting line. In fact, the fan-out line and the connecting line transmit the same signal as the wiring connected thereto, and the part located in the display area and the part located outside the display area belong to different parts of the same wiring. Therefore, for the sake of convenience of explanation, the embodiment of the utility model does not name the multiple parts of a wiring separately, but describes that a certain wiring extends from the display area to the non-display area. It can be understood that the wiring can also be divided into a part of the display area and a part of the non-display area and named separately. For example, in the embodiment of the utility model, the data line 232 extends to the non-display area and is connected to the binding terminal. The wiring can also be divided into a data line located in the display area and a fan-out line located in the binding area, and the data line is connected to the binding terminal through the fan-out line.

[0049] Specifically, the embodiment of the utility model is explained by taking the example of the scan line 231 and the common electrode line 233 being connected to the binding terminal from the non-display area on both sides of the display panel, but the embodiment of the utility model is not limited to this. The scan line 231 and the common electrode line 233 can be connected to the binding terminal from the inside of the plane, and the common electrode line 233 can be directly connected to the binding terminal from the bottom side of the display panel without extending from both sides to the binding area of ​​the display panel; and the display panel may include a gate driving circuit, the scan line 231 is connected to the gate driving circuit, and the input signal is connected to the binding terminal through the gate driving circuit.

[0050] Specifically, the embodiment of the present invention is described using the scan line 231, the data line 232 and the common electrode line 233 as examples. It is understandable that the display panel also includes other signal lines, and the test lines corresponding to the other signal lines can also adopt the design of the test lines in the embodiment of the present invention.

[0051] In some embodiments, Figure 4 , Figure 5 As shown, the display panel 2 includes a substrate 311, a first metal layer 312, a gate insulating layer 313, a second metal layer 315 and a passivation layer 316; the first metal layer 312 is arranged on one side of the substrate 311; the gate insulating layer 313 is arranged on a side of the first metal layer 312 away from the substrate 311; the second metal layer 315 is arranged on a side of the gate insulating layer 313 away from the first metal layer 312; the passivation layer 316 is arranged on a side of the second metal layer 315 away from the gate insulating layer 313;

[0052] Wherein, at least one of the first metal layer 312 and the second metal layer 315 includes the test trace 25, and the display panel 2 includes a fracture between the first portion 25a and the second portion 25b, and the fracture at least penetrates the passivation layer. By making at least one of the first metal layer and the second metal layer include a test trace, and the display panel includes a fracture between the first portion and the second portion, and the fracture at least penetrates the passivation layer, when the test trace is disconnected, the water and oxygen intrusion path can be blocked by disconnecting the film layer and the test trace located on the test trace.

[0053] Specifically, for display panels of different designs, the relative positions of the film layers are different, but the design of the test wiring described in the embodiment of the utility model can be adopted. Figure 4 , Figure 5 Taking the display panel as an example, Figure 4 The thin film transistor of the display panel shown in the figure is a bottom gate top contact structure, therefore, the gate insulating layer 313 will be arranged on the first metal layer 312, and the second metal layer 315 will be arranged on the active layer 314, but when the structure of the display panel is other structures, the relative positions of the film layers and the number and type of the film layers will be different. For example, when the thin film transistor is a top gate structure, the gate insulating layer will be arranged under the first metal layer; or an interlayer insulating layer may be arranged between the second metal layer and the active layer; or a metal layer may be arranged between the first metal layer and the second metal layer; or the second metal layer may be arranged under the active layer. For display panels with other structures, the design of the test wiring described in the embodiments of the utility model can be adopted, and accordingly, the fracture can pass through each film layer or not pass through each film layer.

[0054] Specifically, for display panels with different designs, the setting positions of the test lines may be different. For example, in the embodiment of the utility model, the test lines are set in at least one of the first metal layer and the second metal layer as an example. However, when the display panel also includes other metal layers, the test lines can be partially or completely set in other metal layers. At this time, the design of the test lines in the embodiment of the utility model can also be adopted. Accordingly, the fracture can pass through each film layer or not pass through each film layer.

[0055] In some embodiments, Figures 3 to 5 As shown, the first metal layer 312 includes the test trace 25, and in the area between the edge of the display panel 2 and the binding terminal 24, the passivation layer 316 is disposed on the gate insulating layer 313, and the fracture 26 penetrates the passivation layer 316, the gate insulating layer 313 and the first metal layer 312. By making the fracture penetrate the passivation layer, the gate insulating layer and the first metal layer, when water and oxygen invade from the cut section of the display panel, the fracture can block the water and oxygen invasion path, thereby improving the ability of the display panel to block water and oxygen and improving the yield of the display panel.

[0056] Specifically, it can be understood that when the test trace is disconnected, the fracture can be made to penetrate from top to bottom to all film layers of the metal layer where the test trace is located. Therefore, when the test trace is set on the first metal layer and a gate insulation layer and a passivation layer are provided on the first metal layer, the fracture can be made to penetrate the first metal layer, the gate insulation layer and the passivation layer; and when the test trace is set on the first metal layer and other film layers are provided on the first metal layer, the fracture can be made to penetrate the other film layers and the first metal layer, which will not be repeated here.

[0057] In some embodiments, Figures 3 to 5 As shown, the display panel 2 further includes a pixel electrode layer 317, and the pixel electrode layer 317 is disposed on a side of the passivation layer 316 away from the second metal layer 315, and the binding terminal 24 includes a first binding portion and a second binding portion, the first binding portion is connected to the second binding portion, the first binding portion is disposed on the first metal layer 312, and the second binding portion is disposed on the pixel electrode layer 317. By making the binding terminal include the first binding portion disposed on the first metal layer and the second binding portion disposed on the second metal layer, the impedance of the binding terminal can be reduced, and the first metal layer can be used to form a test trace, and the test trace can be directly connected to the binding terminal.

[0058] Specifically, the above-mentioned embodiment is described by taking the first metal layer and the pixel electrode layer as an example in which the first binding part and the second binding part of the binding terminal are respectively formed, but the embodiments of the utility model are not limited to this. The binding terminal can be formed by only one conductive layer or by other conductive layers. For example, the binding terminal can be formed by part of the second metal layer and part of the pixel electrode layer.

[0059] In some embodiments, Figure 3 , Figure 6 As shown, the second metal layer 315 includes the test trace 25, the passivation layer 316 is disposed on the second metal layer 315, and the fracture 26 penetrates the passivation layer 316 and the second metal layer 315. By making the second metal layer include the test trace and making the fracture penetrate the passivation layer and the second metal layer, when water and oxygen invade from the cut section of the display panel, the fracture can block the water and oxygen invasion path, thereby improving the ability of the display panel to block water and oxygen and improving the yield of the display panel.

[0060] In some embodiments, Figure 3 As shown, the length L3 of the cutout 26 is one tenth to one half of the length L2 of the second portion 25b. By making the length of the cutout one tenth to one half of the length of the second portion, the length of the cutout can be made larger, thereby improving the ability of the display panel to block water and oxygen, and improving the yield of the display panel.

[0061] Specifically, when setting the length of the fracture, in addition to considering the process of forming the fracture, the length of the fracture can be increased to prevent discharge between the first part and the second part, thereby preventing the display from being affected. Increasing the length of the fracture will increase the water and oxygen intrusion path and improve the ability to block water and oxygen. However, when forming the fracture, it is necessary to avoid cutting into the binding terminal to affect the normal operation of the binding terminal.

[0062] In some embodiments, Figure 3 As shown, the length L1 of the first portion 25a is greater than or equal to the length L2 of the second portion 25b. By making the length of the first portion greater than or equal to the length of the second portion, when the test trace is disconnected, the binding terminal is not affected.

[0063] Specifically, the above embodiment is described by taking the example that the length of the first part is greater than or equal to the length of the second part, but the embodiment of the utility model is not limited to this, and the length of the first part can be less than the length of the second part.

[0064] In some embodiments, Figure 3As shown, the test line 25 includes a common test line 253, a data test line 252 and a scan test line 251, and at least one of the common test line 253, the data test line 252 and the scan test line 251 includes the first part 25a and the second part 25b. By making at least one of the common test line, the data test line and the scan test line include the first part and the second part, at least one of the common test line, the data test line and the scan test line is disconnected, so that water and oxygen can be prevented from invading at least one of the common binding terminals, the data binding terminals and the scan binding terminals connected to the common test line, the data test line and the scan test line respectively, so that the yield of the display panel can be improved.

[0065] Specifically, Figure 3 As shown, the binding terminal 24 includes a scan binding terminal 241, a data binding terminal 242 and a common binding terminal 243. One end of the scan binding terminal 241 is connected to the scan test wiring 251, and the other end of the scan binding terminal 241 is connected to the scan line 231. One end of the data binding terminal 242 is connected to the data test wiring 252, and the other end of the data binding terminal 242 is connected to the data line 232. One end of the common binding terminal 243 is connected to the common test wiring 253, and the other end of the common binding terminal 243 is connected to the common electrode line 233.

[0066] Specifically, Figure 3 As shown, Figure 3 It is shown that the common test line 253, the data test line 252 and the scan test line 251 all include a first part and a second part, but the embodiments of the utility model are not limited to this. Only one of the common test line, the data test line and the scan test line may include the first part and the second part, for example, only the common test line may include the first part and the second part; it is also possible to further make a part of the common test lines include the first part and the second part, and another part of the common test lines do not include the first part and the second part, or all the common test lines include the first part and the second part; or only two of the common test lines, the data test lines and the scan test lines include the first part and the second part, and it is also possible that some of the lines include the first part and the second part or all the lines include the first part and the second part.

[0067] In some embodiments, Figure 3As shown, the data test line 252 includes a first data test line 252a, a second data test line 252b and a third data test line 252c, and at least one of the first data test line 252a, the second data test line 252b and the third data test line 252c includes the first part 25a and the second part 25b. By making at least one of the first data test line, the second data test line and the third data test line include the first part and the second part, at least one of the first data test line, the second data test line and the third data test line is disconnected, so that water and oxygen can be prevented from invading at least one of the first data binding terminal, the second data binding terminal and the third data binding terminal respectively connected to the first data test line, the second data test line and the third data test line, so that the yield of the display panel can be improved.

[0068] Specifically, one, two or three of the first data test wiring, the second data test wiring and the third data test wiring may include the first part and the second part.

[0069] Specifically, Figure 3 As shown, the data binding terminal 242 includes a first data binding terminal 242a, a second data binding terminal 242b and a third data binding terminal 242c, and the data line 232 includes a first data line 232a, a second data line 232b and a third data line 232c, one end of the first data binding terminal 242a is connected to the first data line 232a, and the other end of the first data binding terminal 242a is connected to the first data test line 252a, one end of the second data binding terminal 242b is connected to the second data line 232b, and the other end of the second data binding terminal 242b is connected to the second data test line 252b, one end of the third data binding terminal 242c is connected to the third data line 232c, and the other end of the third data binding terminal 242c is connected to the third data test line 252c.

[0070] Specifically, the display panel includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel, the first data line is connected to the red sub-pixel, the second data line is connected to the blue sub-pixel, and the third data line is connected to the green sub-pixel, so that the data lines of the sub-pixels of each color can be tested separately. However, the embodiment of the utility model is not limited thereto, and all data lines and sub-pixels can be tested simultaneously.

[0071] Specifically, the scan lines can be divided into multiple scan lines or multiple groups of scan lines for testing, which will not be described in detail here.

[0072] like Figure 4 As shown, the display panel 2 further includes an active layer 314 , a liquid crystal layer 318 , a common electrode layer 321 and a substrate 322 .

[0073] Specifically, the first metal layer 312 may include a gate electrode and a scan line; the second metal layer 315 may include a source electrode, a drain electrode and a data line; the pixel electrode layer 317 may include a pixel electrode; and the common electrode layer may include a common electrode and a common electrode line.

[0074] Specifically, the utility model embodiment Figure 5 , Figure 6 The cross-sectional view of the binding area shown in FIG. 1 corresponds to the cross-sectional view of the display area and is not limited to Figure 4 The cross-sectional view of the display area shown in FIG. 1 satisfies the cross-sectional view of the other display areas. Figure 5 , Figure 6 The cross-sectional view of the bonding area can also be used Figure 5 , Figure 6 The cross-sectional view of the binding area shown corresponds to the cross-sectional view of the display area, which is a cross-sectional view of other display areas.

[0075] An embodiment of the utility model provides a display motherboard, which includes a display panel as described in any one of the above embodiments.

[0076] like Figure 7 As shown, the display motherboard 20 includes a test terminal located between adjacent display panels 2, the test terminal includes a scan test terminal 421, a data test terminal 422 and a common test terminal 423, and the display motherboard 20 also includes a scan connection line 411, a data connection line 412 and a common connection line 413, the scan connection line 411 connects the scan test line 251 and the scan test terminal 421, the data connection line 412 connects the data test line 252 and the data test terminal 422, and the common connection line 413 connects the common test line 253 and the common test terminal 423. By arranging the connection lines and the test terminals outside the display panel, the frame of the display panel can be reduced and the screen ratio of the display panel can be increased.

[0077] Specifically, the scan connection lines, data connection lines and common connection lines can be formed by metals of different film layers from the test lines. For example, the test lines are arranged in the first metal layer, and the scan connection lines, data connection lines and common connection lines can be arranged in the second metal layer.

[0078] Specifically, the data connection line 412 includes a first data connection line 412a, a second data connection line 412b and a third data connection line 412c, and the data test terminal 422 includes a first data test terminal 422a, a second data test terminal 422b and a third data test terminal 422c. The first data connection line 412a connects the first data test line 252a and the first data test terminal 422a, the second data connection line 412b connects the second data test line 252b and the second data test terminal 422b, and the third data connection line 412c connects the third data test line 252c and the third data test terminal 422c.

[0079] Meanwhile, an embodiment of the utility model provides a display device, which includes a display panel as described in any one of the above embodiments.

[0080] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0081] The above is a detailed introduction to a display panel and a display device provided in an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present invention. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: include: Display area; a non-display area, arranged on at least one side of the display area, the non-display area comprising a binding area, wherein a plurality of binding terminals and test traces connected to the binding terminals are arranged in the binding area, and the test traces extend to the edge of the display panel; Among them, in the area between the edge of the display panel and the binding terminal, at least one of the test traces includes a first part and a second part, an end of the first part away from the second part is connected to the binding terminal, an end of the second part away from the first part is located at the edge of the display panel, and the first part is disconnected from the second part.

2. The display panel according to claim 1, wherein: The display panel comprises: substrate; A first metal layer is disposed on one side of the substrate; A gate insulating layer, disposed on a side of the first metal layer away from the substrate; A second metal layer is disposed on a side of the gate insulating layer away from the first metal layer; A passivation layer, disposed on a side of the second metal layer away from the gate insulating layer; At least one of the first metal layer and the second metal layer includes the test trace, the display panel includes a fracture between the first portion and the second portion, and the fracture at least penetrates the passivation layer.

3. The display panel according to claim 2, wherein: The first metal layer includes the test trace, and in the area between the edge of the display panel and the binding terminal, the passivation layer is arranged on the gate insulating layer, and the fracture runs through the passivation layer, the gate insulating layer and the first metal layer.

4. The display panel according to claim 3, wherein: The display panel also includes a pixel electrode layer, which is arranged on a side of the passivation layer away from the second metal layer. The binding terminal includes a first binding part and a second binding part, the first binding part is connected to the second binding part, the first binding part is arranged on the first metal layer, and the second binding part is arranged on the pixel electrode layer.

5. The display panel according to claim 2, wherein: The second metal layer includes the test trace, the passivation layer is disposed on the second metal layer, and the fracture penetrates the passivation layer and the second metal layer.

6. The display panel according to claim 2, wherein: The length of the fracture is one tenth to one half of the length of the second portion.

7. The display panel according to claim 1, wherein: The length of the first portion is greater than or equal to the length of the second portion.

8. The display panel according to claim 1, wherein: The test routing includes a common test routing, a data test routing, and a scan test routing, and at least one of the common test routing, the data test routing, and the scan test routing includes the first portion and the second portion.

9. The display panel according to claim 8, wherein: The data test line includes a first data test line, a second data test line and a third data test line, and at least one of the first data test line, the second data test line and the third data test line includes the first part and the second part.

10. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 9.

Images