Display panel and display device

Abstract

The utility model discloses a display panel and a display device. The display panel comprises a display area and a bonding area, and the bonding area is located on at least one side of the display area; the bonding area comprises an effective bonding pad area and dummy bonding pad areas, and the dummy bonding pad areas are located on the two sides of the effective bonding pad area in the first direction; the effective bonding pad area is provided with a plurality of effective bonding pads; the effective bonding pad is electrically connected with a signal transmission line in the display panel; the dummy pad area is provided with a plurality of dummy pads, and the dummy pads are not connected with the signal transmission line. According to the technical scheme of the embodiment of the utility model, a plurality of dummy pads are arranged in the dummy pad area of the bonding area to serve as glue discharge buffer, so that glue discharge at two sides is slowed down, and the difference between the glue discharge at the edge of the bonding area and the glue discharge in the middle is reduced, thereby reducing the distance difference between the chips at the edge of the bonding area and the bonding pads in the middle area and the bonding pads. And the stress between the regions on the two sides and the driving chip is reduced. The dummy bonding pad is not connected with the signal transmission line, and the dummy bonding pad only plays a role in rubber discharging and buffering, so that the reliability of the display panel is improved.

Description

Technical Field

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

[0002] In the process of manufacturing a display device, it is usually necessary to bond a driver chip to a display panel.

[0003] In the prior art, anisotropic conductive film (ACF) is used to bond the driver chip and the substrate of the display panel, wherein the substrate can be a hard substrate or a flexible substrate, or the driver chip can be integrated on a flexible PCB.

[0004] However, since the debonding range of the bonding side areas is larger than that of the middle area, more debonding occurs, so the distance between the bonding side areas and the driver chip is relatively small, and the distance between the middle area and the driver chip is relatively large, causing the two sides of the driver chip to bend downward, resulting in greater stress between the two side areas of the substrate and the driver chip, especially for a hard substrate, such as the bonding method in which the driver chip is fixed on a glass substrate (Chip On Glass, COG), the stress is greater, and there is a risk of chip peeling failure in reliability verification. Utility Model Content

[0005] The utility model provides a display panel and a display device, so as to reduce the gap difference between the two side areas of the display panel and the middle area and the driving chip, thereby improving the reliability of the display panel.

[0006] In a first aspect, an embodiment of the utility model provides a display panel, comprising a display area and a bonding area, wherein the bonding area is located on at least one side of the display area;

[0007] The bonding area is provided with a plurality of pads, and the plurality of pads are arranged along a first direction, and the first direction intersects with a connection direction of the bonding area and the display area;

[0008] The bonding area includes an effective pad area and a dummy pad area. Along the first direction, the dummy pad area is located on both sides of the effective pad area; the effective pad area is provided with multiple effective pads; the effective pads are electrically connected to the signal transmission line in the display panel; the dummy pad area is provided with multiple dummy pads, and the dummy pads are not connected to the signal transmission line.

[0009] Optionally, along the second direction, the length of at least one dummy pad is greater than the length of at least one effective pad; wherein the second direction is perpendicular to the first direction;

[0010] And / or, along the first direction, a width of at least one dummy pad is greater than a width of at least one effective pad.

[0011] Optionally, the dummy pad area includes a first dummy area and a second dummy area, and along the first direction, the first dummy area and the second dummy area are arranged on both sides of the effective pad area;

[0012] In the dummy pad area, the size of the dummy pad meets at least one of the following conditions:

[0013] In the first dummy area, the length of the dummy pad gradually increases along the direction from the effective pad area to the first dummy area;

[0014] In the second dummy area, the length of the dummy pad gradually increases along the direction from the effective pad area to the second dummy area;

[0015] In the first dummy area, the width of the dummy pad gradually increases along the direction from the effective pad area to the first dummy area;

[0016] In the second dummy area, the width of the dummy pad gradually increases along the direction from the effective pad area to the second dummy area.

[0017] Optionally, the dummy pads are symmetrically arranged in the first dummy area and the second dummy area.

[0018] Optionally, the effective pad and the dummy pad have the same shape; and the effective pads have the same size.

[0019] Optionally, the dummy pad has a different shape from the effective pad.

[0020] Optionally, the shape of the effective pad is a rectangle, and the shape of the dummy pad is a polygon.

[0021] Optionally, the shape of the dummy pad is a trapezoid, and along the second direction, the height of the trapezoid is equal to the length of the effective pad; along the first direction, the minimum width of the trapezoid is greater than or equal to the width of the effective pad; the second direction is perpendicular to the first direction.

[0022] Optionally, in the dummy pad area, dummy pads with a positive trapezoid shape and dummy pads with a reverse trapezoid shape are arranged alternately.

[0023] In a second aspect, an embodiment of the utility model further provides a display device, which includes any of the display panels described above, and also includes a driving chip, wherein the driving chip is bonded to a pad of the display panel via anisotropic conductive adhesive.

[0024] The technical solution of the embodiment of the utility model is to set a display panel, including a display area and a bonding area, the bonding area is located at least on one side of the display area, the bonding area is provided with a plurality of pads, the plurality of pads are arranged along a first direction, the first direction intersects with the connection direction of the bonding area and the display area, the bonding area includes an effective pad area and a dummy pad area, along the first direction, the dummy pad area is located on both sides of the effective pad area, the effective pad area is provided with a plurality of effective pads, the effective pads are electrically connected to the signal transmission line in the display panel, the dummy pad area is provided with a plurality of dummy pads, the dummy pads are used as a debonding buffer, so that the debonding on both sides becomes slower, thereby reducing the difference in debonding at the edge and the middle of the bonding area, thereby reducing the difference in the spacing between the chip and the bonding pad in the edge and the middle area of ​​the bonding area, and reducing the stress between the two side areas and the driving chip. The dummy pads are not connected to the signal transmission line, and the dummy pads only play the role of debonding buffer, thereby improving the reliability of the display panel.

[0025] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 is a structural schematic diagram of a display panel provided according to an embodiment of the utility model;

[0028] Figure 2 It is a structural schematic diagram of a bonding area of ​​a display panel provided according to an embodiment of the utility model;

[0029] Figure 3 It is a structural schematic diagram of a bonding area of ​​another display panel provided according to an embodiment of the utility model;

[0030] Figure 4 It is a structural schematic diagram of a bonding area of ​​another display panel provided according to an embodiment of the utility model;

[0031] Figure 5 It is a structural schematic diagram of a bonding area of ​​a display panel provided according to an embodiment of the utility model;

[0032] Figure 6 It is a schematic diagram of the shape structure of an effective pad and a dummy pad of a display panel provided according to an embodiment of the utility model;

[0033] Figure 7 It is a schematic diagram of the shape structure of another effective pad and a dummy pad of a display panel provided according to an embodiment of the utility model;

[0034] Figure 8 It is a schematic diagram of a top view of a display device provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] Figure 1 is a schematic diagram of the structure of a display panel provided according to an embodiment of the utility model. This embodiment can be applied to the case of manufacturing a display panel, such as Figure 1 As shown, the display panel includes a display area 11 and a bonding area 12, and the bonding area 12 is located on at least one side of the display area 11; the bonding area 12 is provided with a plurality of pads, and the plurality of pads are arranged along a first direction X, and the first direction X intersects with the connection direction of the bonding area 12 and the display area 11; the bonding area 12 includes an effective pad area 121 and a dummy pad area 122, and along the first direction X, the dummy pad area 122 is located on both sides of the effective pad area 121; the effective pad area 121 is provided with a plurality of effective pads 13; the effective pads 13 are electrically connected to the signal transmission line in the display panel; the dummy pad area 122 is provided with a plurality of dummy pads 14, and the dummy pads 14 are not connected to the signal transmission line.

[0038] In this embodiment, the display area 11 is the image display area of ​​the display screen, which is the pixel array of the display area 11. The pad is the basic component unit of the surface mount assembly, which is used to form the pad pattern of the circuit board, that is, a combination of pads designed for special component types. The first direction X can be a horizontal direction, such as Figure 1 The first direction X intersects the direction of the line connecting the bonding area 12 and the display area 11 ( Figure 1 Towards the second direction Y). The types of display panels include but are not limited to liquid crystal display (LCD) and organic light-emitting diode (OLED). The signal transmission lines can be connected to the effective pads 121 and the pixels in the display area 11 respectively, and the effective pads 121 can be bonded to the driver chip to receive the driving signal from the driver chip and transmit the driving signal to the corresponding connected pixels through the transmission signal lines.

[0039] In this embodiment, the bonding area 12 includes an effective pad area 121 and a dummy pad area 122. Along the first direction X, the dummy pad area 122 is located on both sides of the effective pad area 121. The effective pad area 121 is provided with a plurality of effective pads 13, which are electrically connected to the signal transmission line in the display panel. The dummy pad area 122 is provided with a plurality of dummy pads 14. The provision of the dummy pads 14 is equivalent to providing an obstacle in the debonding path, which serves as a debonding buffer, so that the debonding on both sides becomes slower, thereby increasing the distance between the two side areas and the driver chip when the driver chip is bonded to the display panel. Accordingly, the distance between the two side areas (i.e., the dummy pad area 122) and the driver chip is closer to the distance between the middle area (i.e., the effective pad area 121) and the driver chip, thereby reducing the stress between the two side areas and the driver chip. The dummy pads 14 are not connected to the signal transmission line, and the dummy pads play the role of debonding buffer, thereby improving the reliability of the display panel.

[0040] The technical solution of the embodiment of the utility model is to set a display panel, including a display area and a bonding area, the bonding area is located at least on one side of the display area, the bonding area is provided with a plurality of pads, the plurality of pads are arranged along a first direction, the first direction intersects with the connection direction of the bonding area and the display area, the bonding area includes an effective pad area and a dummy pad area, along the first direction, the dummy pad area is located on both sides of the effective pad area, the effective pad area is provided with a plurality of effective pads, the effective pads are electrically connected to the signal transmission line in the display panel, the dummy pad area is provided with a plurality of dummy pads, the dummy pads are used as a debonding buffer, so that the debonding on both sides becomes slower, thereby reducing the difference in debonding at the edge and the middle of the bonding area, thereby reducing the difference in the spacing between the chip and the bonding pad at the edge and the middle area of ​​the bonding area, and reducing the stress between the two side areas and the driving chip. The dummy pads are not connected to the signal transmission line, and the dummy pads only play the role of debonding buffer, thereby improving the reliability of the display panel.

[0041] Based on the technical solution of the above embodiment, optionally, along the second direction, the length of at least one dummy pad is greater than the length of at least one effective pad; wherein the second direction is perpendicular to the first direction; and / or, along the first direction, the width of at least one dummy pad is greater than the width of at least one effective pad.

[0042] In this embodiment, the length of at least one dummy pad is set to be greater than the length of at least one effective pad, and / or the width of at least one dummy pad is set to be greater than the width of at least one effective pad, so that the debonding path is longer and serves as a debonding buffer to further slow down the debonding on both sides, thereby further increasing the distance between the two side areas and the driver chip. Figure 2 It is a structural schematic diagram of a bonding area of ​​a display panel provided according to an embodiment of the utility model; Figure 3 It is a structural schematic diagram of a bonding area of ​​another display panel provided according to an embodiment of the utility model; Figure 4 is a structural schematic diagram of a bonding area of ​​another display panel provided according to an embodiment of the utility model; Figures 2 to 4 As shown, the first direction X and the second direction Y are shown by arrows in the figure, and the figure shows the shapes and positional relationships of four effective pads 13 and four dummy pads 14. The dummy pads 14 are arranged in the dummy pad area 122, the effective pads 13 are arranged in the effective pad area 121, and the dummy pads 14 are located on both sides of all the effective pads 13.

[0043] The relationship between the length and width of the dummy pad 14 and the effective pad 13 is as follows: along the second direction Y, the length of at least one dummy pad 14 is greater than the length of at least one effective pad 13, and along the first direction X, the width of at least one dummy pad 14 is greater than the width of at least one effective pad 13; along the second direction Y, the length of at least one dummy pad 14 is greater than the length of at least one effective pad 13, or along the first direction X, the width of at least one dummy pad 14 is greater than the width of at least one effective pad 13.

[0044] For example, Figure 2 As shown, along the second direction Y, the lengths of the dummy pads 14 are the same and are greater than the lengths of the effective pads 13, but along the first direction X, the widths of the dummy pads 14 are the same as the widths of the effective pads 13. Exemplarily, along the second direction Y, the length of the effective pads 13 is A, and along the first direction X, the width of the effective pads 13 is B. Then, along the second direction Y, the length of the dummy pads 14 is greater than A and is set to A+A1, and along the first direction X, the widths of the dummy pads 14 and the widths of the effective pads 13 are both set to B. Wherein, A is the length value of the effective pads 13; B is the width value of the effective pads 13; and A1 is a value greater than 0.

[0045] For example, Figure 3 As shown, along the second direction Y, the length of the dummy pad 14 is the same as that of the effective pad 13, but along the first direction X, the width of the dummy pad 14 is the same and both are greater than the width of the effective pad 13. Exemplarily, along the second direction Y, the length of the effective pad 13 is A, and along the first direction X, the width of the effective pad 13 is B, then along the second direction Y, the length of the dummy pad 14 is equal to A, and along the first direction X, the width of the dummy pad 14 is greater than B, and is set to B+B1. Wherein, A is the length value of the effective pad 13; B is the width value of the effective pad 13; and B1 is a value greater than 0.

[0046] For example, Figure 4As shown, along the second direction Y, the length of the dummy pad 14 increases successively and is greater than the length of the effective pad 13, while along the first direction X, the width of the dummy pad 14 increases successively and is greater than the width of the effective pad 13. Exemplarily, along the second direction Y, the length of the effective pad 13 is A, and along the first direction X, the width of the effective pad 13 is B, then along the second direction Y, the length of the dummy pad 14 is greater than A, and increases successively by A1, for example, set to A+A1, A+2*A1, while along the first direction X, the width of the dummy pad 14 is greater than B, and increases successively by B1, for example, set to B+B1, B+2*B1. Wherein, A is the length value of the effective pad 13; B is the width value of the effective pad 13; A1 is a value greater than 0; B1 is a value greater than 0.

[0047] Figure 5 is a schematic diagram of the structure of a bonding area of ​​a display panel provided according to an embodiment of the utility model, such as Figure 5 As shown, the dummy pad area includes a first dummy area 1221 and a second dummy area 1222. Along the first direction X, the first dummy area 1221 and the second dummy area 1222 are arranged on both sides of the effective pad area 121. In the dummy pad area, the size of the dummy pad meets at least one of the following conditions: in the first dummy area 1221, the length of the dummy pad gradually increases along the direction from the effective pad area 121 to the first dummy area 1221; in the second dummy area 1222, the length of the dummy pad gradually increases along the direction from the effective pad area 121 to the second dummy area 1222; in the first dummy area 1221, the width of the dummy pad gradually increases along the direction from the effective pad area 121 to the first dummy area 1221; in the second dummy area 1222, the width of the dummy pad gradually increases along the direction from the effective pad area 121 to the second dummy area 1222.

[0048] For example, Figure 5 As shown, along the second direction Y, the length of the dummy pad 14 increases successively and is greater than the length of the effective pad 13, but along the first direction X, the width of the dummy pad 14 is the same as the width of the effective pad 13. Exemplarily, along the second direction Y, the length of the effective pad 13 is A, and along the first direction X, the width of the effective pad 13 is B, then along the second direction Y, the length of the dummy pad 14 is greater than A, and increases successively by A1 from left to right, for example, set to A+A1, A+2*A1 successively, and along the first direction X, the width of the dummy pad 14 and the width of the effective pad 13 are both set to B. Wherein, A is the length value of the effective pad 13; B is the width value of the effective pad 13; A1 is a value greater than 0.

[0049] In this embodiment, in the dummy pad area, the size of the dummy pad needs to meet at least one of the above conditions, so that the debonding path is longer, serving as a debonding buffer to further slow down the debonding on both sides, thereby further increasing the distance between the two side areas and the driving chip and improving the reliability of the display panel.

[0050] Based on the technical solution of the above embodiment, Figure 5 As shown, the dummy pads are symmetrically arranged in the first dummy area 1221 and the second dummy area 1222 .

[0051] In this embodiment, with the effective pad area 121 as the center, the dummy pads of the first dummy area 1221 and the dummy pads of the second dummy area 1222 are symmetrically arranged, and the stress on both sides is uniform, which reduces the risk of the driver chip detaching from the display panel and improves the reliability of the display panel.

[0052] Figure 6 : is a schematic diagram of the shape structure of an effective pad and a dummy pad of a display panel provided according to an embodiment of the utility model, such as Figure 6 As shown, the effective pads 13 and the dummy pads 14 have the same shape; and the effective pads 13 have the same size.

[0053] In this embodiment, Figure 6 It is shown by way of example that the effective pad 13 and the dummy pad 14 have the same shape and are both rectangular. The effective pad 13 is arranged in the effective pad area 121, and the dummy pad 14 is arranged in the first dummy area 1221 and the second dummy area 1222, respectively. The effective pad 13 and the dummy pad 14 are arranged in the same shape for the purpose of making it easier to prepare the dummy pad 14. The sizes of the effective pads 13 are the same, and the length of each effective pad 13 is exemplarily set to A and the width is B. Among them, A is the length value of the effective pad 13; B is the width value of the effective pad 13.

[0054] Based on the technical solution of the above embodiment, optionally, the shapes of the dummy pad and the effective pad are different.

[0055] In this embodiment, the dummy pad and the effective pad can be set to different shapes. For example, the effective pad is set to a rectangle and the dummy pad is set to a trapezoid. Setting the dummy pad and the effective pad to different shapes is more conducive to blocking adhesive removal.

[0056] Based on the technical solution of the above embodiment, optionally, the shape of the effective pad is a rectangle, and the shape of the dummy pad is a polygon.

[0057] Exemplarily, the shape of the effective pad is a rectangle, and the shape of the dummy pad can be set to a pentagon, a hexagon, etc.

[0058] Figure 7FIG. 1 is a schematic diagram of the shape structure of another effective pad and a dummy pad of a display panel provided according to an embodiment of the utility model. Figure 7 As shown, the shape of the dummy pad 14 is a trapezoid. Along the second direction Y, the height of the trapezoid is equal to the length of the effective pad 13; along the first direction X, the minimum width of the trapezoid is greater than or equal to the width of the effective pad 13; the second direction is perpendicular to the first direction.

[0059] For example, Figure 7 As shown, the effective pad 13 is arranged in the effective pad area 121, and the dummy pad 14 is arranged in the first dummy area 1221 and the second dummy area 1222, respectively. Along the second direction Y, the length of the effective pad 13 is A, and along the first direction X, the width of the effective pad 13 is B. Along the second direction Y, the height of the trapezoid is equal to the length of the effective pad 13, which is set to A. Along the first direction X, since the trapezoid is wide at the top and narrow at the bottom or narrow at the top and wide at the bottom, the minimum width of the trapezoid is greater than or equal to the width of the effective pad 13, and the minimum width of the trapezoid is set to B+B2. Among them, A is the length value of the effective pad 13; B is the width value of the effective pad 13; B2 is a value greater than 0.

[0060] Based on the technical solution of the above embodiment, Figure 7 As shown, in the dummy pad area, the dummy pads 14 with a positive trapezoid shape and the dummy pads 14 with a reverse trapezoid shape are arranged alternately.

[0061] In this embodiment, the dummy pads 14 of a regular trapezoidal shape and the dummy pads 14 of an inverted trapezoidal shape are arranged alternately, so that the debonding paths on both sides become longer, thereby slowing down the debonding on both sides.

[0062] The technical solution of this embodiment is to set up a display panel, and set dummy pads of different shapes or sizes in the dummy pad area of ​​the bonding area of ​​the display panel as a debonding buffer, thereby reducing the difference in gap between the two sides of the driver chip and the display panel relative to the gap between the middle of the driver chip and the display panel during COG, thereby improving the reliability of the display panel.

[0063] Figure 8 is a schematic diagram of a top view of a display device provided according to an embodiment of the utility model, such as Figure 8 As shown, the display device includes any one of the display panels 10 described above, and also includes a driving chip 20. The driving chip 20 is bonded to the pads of the display panel 10 through anisotropic conductive adhesive.

[0064] In this embodiment, the driving chip 20 is sequentially disposed on the display panel 10 , and the pad of the driving chip 20 (denoted as the second pad 21 ) is bonded to the pad of the display panel 10 by anisotropic conductive adhesive.

[0065] The technical solution of this embodiment is to provide a display device including a display panel and a driving chip, wherein the driving chip and the pads of the display panel are bonded and connected by anisotropic conductive adhesive, thereby improving the reliability of the display panel.

[0066] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: It includes a display area and a bonding area, wherein the bonding area is located on at least one side of the display area; The bonding area is provided with a plurality of pads, and the plurality of pads are arranged along a first direction, and the first direction intersects with a connection direction of the bonding area and the display area; The bonding area includes an effective pad area and a dummy pad area. Along the first direction, the dummy pad area is located on both sides of the effective pad area; the effective pad area is provided with a plurality of effective pads; the effective pads are electrically connected to the signal transmission line in the display panel; the dummy pad area is provided with a plurality of dummy pads, and the dummy pads are not connected to the signal transmission line.

2. The display panel according to claim 1, characterized in that: Along the second direction, the length of at least one of the dummy pads is greater than the length of at least one of the effective pads; wherein the second direction is perpendicular to the first direction; And / or, along the first direction, the width of at least one of the dummy pads is greater than the width of at least one of the effective pads.

3. The display panel according to claim 2, characterized in that: The dummy pad area includes a first dummy area and a second dummy area, and along the first direction, the first dummy area and the second dummy area are arranged on both sides of the effective pad area; In the dummy pad area, the size of the dummy pad satisfies at least one of the following conditions: In the first dummy area, the length of the dummy pad gradually increases along the direction from the effective pad area to the first dummy area; In the second dummy area, the length of the dummy pad gradually increases along the direction from the effective pad area to the second dummy area; In the first dummy area, the width of the dummy pad gradually increases along the direction from the effective pad area to the first dummy area; In the second dummy area, the width of the dummy pad gradually increases along the direction from the effective pad area to the second dummy area.

4. The display panel according to claim 3, characterized in that: The dummy pads are symmetrically arranged in the first dummy area and the second dummy area.

5. The display panel according to any one of claims 1 to 4, characterized in that: The effective pads and the dummy pads have the same shape; and the effective pads have the same size.

6. The display panel according to any one of claims 1 to 4, characterized in that: The dummy pad has a different shape from the effective pad.

7. The display panel according to claim 6, characterized in that: The effective pad is in a rectangular shape, and the dummy pad is in a polygonal shape.

8. The display panel according to claim 7, characterized in that: The shape of the dummy pad is a trapezoid, and along the second direction, the height of the trapezoid is equal to the length of the effective pad; along the first direction, the minimum width of the trapezoid is greater than or equal to the width of the effective pad; the second direction is perpendicular to the first direction.

9. The display panel according to claim 8, characterized in that: In the dummy pad area, the dummy pads in a positive trapezoid shape and the dummy pads in an inverted trapezoid shape are arranged alternately.

10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9, and further comprises a driving chip, wherein the driving chip is bonded to the pad of the display panel via anisotropic conductive adhesive.

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