Display substrate and display device

Abstract

The present invention provides a display substrate and a display device, which relate to the field of display technology and are used to solve the problem that metal leads and binding pads are prone to fall off in existing narrow-frame and borderless display products, thus affecting the quality of display products. The display substrate includes a base substrate, and the base substrate includes a display area and a peripheral area located around the display area; the display substrate also includes: an effective binding pad, a test binding pad and a signal line, all located in the peripheral area, the signal line is located in the peripheral area, the signal line is coupled to the effective binding pad and the test binding pad respectively, the signal line includes a first fold line portion, the distance between the first end of the first fold line portion and the effective binding pad is less than the distance between the second end of the first fold line portion and the effective binding pad, the first end is coupled to the test binding pad, and the second end is coupled to the effective binding pad.

Description

Technical Field

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

[0002] With the continuous development of display technology, consumers not only pay attention to the display performance when choosing display products, but also pay attention to the appearance of display products. This makes display products gradually develop in the direction of narrow bezel or borderless.

[0003] However, existing narrow-border and borderless display products have the problem of metal leads and binding pads falling off, which affects the quality of the display products. Summary of the invention

[0004] The object of the present invention is to provide a display substrate and a display device, which are used to solve the problem that metal leads and binding pads are prone to fall off in existing narrow-frame and borderless display products, thereby affecting the quality of display products.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A first aspect of the present invention provides a display substrate, comprising a base substrate, wherein the base substrate comprises a display area and a peripheral area located around the display area; the display substrate further comprises:

[0007] a valid binding pad and a test binding pad both located in the peripheral area;

[0008] A signal line, wherein the signal line is located in the peripheral area, the signal line is coupled to the effective binding pad and the test binding pad respectively, the signal line comprises a first fold line portion, a distance between a first end of the first fold line portion and the effective binding pad is smaller than a distance between a second end of the first fold line portion and the effective binding pad, the first end is coupled to the test binding pad, and the second end is coupled to the effective binding pad.

[0009] Optionally, the signal line includes at least one blocking unit, the blocking unit includes the first fold line portion and two second fold line portions, the two second fold line portions are arranged along a third direction and at least partially staggered along the first direction, and the third direction intersects with the first direction; the first fold line portion is coupled to the two second fold line portions respectively; on a horizontal plane parallel to the base substrate, the test binding pad is subjected to a peeling force in a first direction, the first fold line portion is subjected to a peeling force in a second direction, and an angle formed between the first direction and the second direction is greater than 90 degrees.

[0010] Optionally, the blocking unit further includes:

[0011] Two third fold line portions, one of which is coupled to the first end of the first fold line portion and a second fold line portion respectively, and the other third fold line portion is coupled to the second end of the first fold line portion and the other second fold line portion respectively.

[0012] Optionally, at least a portion of the first fold line portion is located between the two second fold line portions, and an extension direction of the first fold line portion is the same as an extension direction of the second fold line portion.

[0013] Optionally, the angle between the third fold line portion and the second fold line portion coupled thereto is less than or equal to 90 degrees.

[0014] Optionally, the blocking unit further includes:

[0015] At least one fourth fold line portion, the first end of the first fold line portion is coupled to one of the second fold line portions through the at least one fourth fold line portion, and the second end of the first fold line portion is directly coupled to another of the second fold line portions.

[0016] Optionally, the blocking unit includes a fourth fold line portion, a first end of the first fold line portion is coupled to the second fold line portion through the fourth fold line portion, and an angle formed between the fourth fold line portion and the second fold line portion coupled thereto is greater than 90 degrees.

[0017] Optionally, the blocking unit includes two fourth fold line portions, and the first end of the first fold line portion is coupled to the second fold line portion through the two fourth fold line portions in sequence, and among the two fourth fold line portions, the fourth fold line portion close to the first fold line portion extends along the third direction, and the angle formed between the fourth fold line portion close to the second fold line portion and the second fold line portion is greater than 90 degrees.

[0018] Optionally, the signal line includes at least two blocking units, and the at least two blocking units are coupled in sequence.

[0019] Based on the technical solution of the above-mentioned display substrate, a second aspect of the present invention provides a display device, comprising the above-mentioned display substrate.

[0020] In the technical solution provided by the present invention, the distance between the first end of the first fold line portion and the effective binding pad is set to be smaller than the distance between the second end of the first fold line portion and the effective binding pad, the first end is coupled to the test binding pad, and the second end is coupled to the effective binding pad; so that when the test binding pad is subjected to a peeling force in the first direction, when the peeling force is transmitted along the signal line to the first fold line portion, the first fold line portion will be subjected to a peeling force in the second direction, and the angle formed between the first direction and the second direction is greater than 90 degrees. This setting method makes the peeling force on the first fold line portion opposite to the peeling force on the test binding pad, so that under the action of the peeling force, the signal line can break at the position where the first fold line portion is located, thereby effectively blocking the path of the peeling force being transmitted along the first fold line portion to the effective binding pad, effectively improving the problem of metal leads and effective binding pads falling off in display products, and ensuring the quality of display products. The display substrate provided by the embodiment of the present invention can meet the requirements of Rework operations, ensure the normal delivery of display products, and avoid losses. In the technical solution provided by the present invention, the problem of metal leads and effective binding pads easily falling off in display products is improved without changing other processes, without increasing other risks, without increasing production costs, and without affecting production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic diagram of removing a driving unit from a display substrate provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a signal line and a binding pad subjected to peeling force provided by an embodiment of the present invention;

[0024] Figure 3 A first structural schematic diagram of a signal line and a binding pad provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of a first structure subjected to peeling force provided by an embodiment of the present invention;

[0026] Figure 5 A second structural schematic diagram of a signal line and a binding pad provided by an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of a second structure subjected to peeling force provided by an embodiment of the present invention;

[0028] Figure 7A third structural schematic diagram of a signal line and a binding pad provided by an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of a third structure subjected to peeling force provided by an embodiment of the present invention;

[0030] Fig. 9 A fourth structural schematic diagram of a signal line and a binding pad provided by an embodiment of the present invention;

[0031] Fig.10 A fifth structural diagram of a signal line and a binding pad provided by an embodiment of the present invention;

[0032] Fig.11 A sixth structural schematic diagram of a signal line and a binding pad provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to further illustrate the display substrate and the display device provided by the embodiments of the present invention, a detailed description is given below in conjunction with the accompanying drawings.

[0034] Research has found that the following problems are prone to occur in narrow-frame and borderless display products: (1) The metal leads at the edge of the display substrate are damaged. (2) The binding position of the display substrate is close to the edge of the display substrate. (3) The underlying material of the metal leads in the display substrate is indium tin oxide, which has poor adhesion to the glass substrate. Combined with the above problems, the metal leads are prone to fall off during repair and rework of the display product, affecting the quality of the display product. It should be noted that the metal leads include the following three parts: the effective binding pad, the test binding pad and the signal line. The metal leads adopt a double-layer structure, the first layer can be made of Cu material, the second layer can be made of indium tin oxide material, and at least part of the second layer is located between the first layer and the glass substrate of the display substrate.

[0035] Based on the above problems, the following verification is done:

[0036] Verification 1: Reduce the grinding amount of the metal leads in the six areas of the display substrate and control the grinding amount to 100±70μm. The first area and the sixth area are close to the edge area, and the second area to the fifth area are located between the first area and the sixth area. The metal leads in the first area and the sixth area can provide signals for the gate drive circuit and the data line in the display substrate, and the metal leads in the second area to the fifth area can provide signals for the data line in the display substrate. In this way, the metal leads in the first area and the sixth area may fall off, and the metal leads in the second area to the fifth area may not fall off.

[0037] Verification 2: Set the first layer of the metal lead to be made of Cu material, and the second layer of the metal lead to be made of indium tin oxide material. The thickness of the second layer is set to In this way, the metal leads in the first area to the sixth area are all detached.

[0038] Verification 3: The first layer of the metal lead is made of Cu material, and the second layer of the metal lead is made of molybdenum niobium (MoNb) material. In this way, the metal leads in the first area to the sixth area all fall off, and the metal leads in the first area and the sixth area fall off more seriously.

[0039] Verification 4: Skip the grinding step, add a laser cutting process, cut the portion of the metal lead close to the edge of the display substrate to separate the effective binding pad in the metal lead from the portion of the metal lead close to the edge of the display substrate. In this way, the metal leads in the first area to the sixth area do not fall off.

[0040] Since the width of the peripheral area where the metal leads are set in the display product is very narrow and the wiring space is limited, it is impossible to improve the shedding problem by adding a laser cutting process. After adding the laser cutting process, the cutting effect of the laser cutting edge cannot be checked and there is no mass production. Moreover, the laser energy may be released to the machine, causing damage to the equipment, greatly increasing the risk of corrosion of the metal leads, and burying hidden dangers for the long-term reliability and quality of the display product.

[0041] The following conclusion is obtained through the above verification process: by separating the effective binding pad in the metal lead from the portion of the metal lead close to the edge of the display substrate, the problem of the metal lead falling off from the substrate can be effectively improved.

[0042] Based on the above analysis, the present invention provides the following technical solutions:

[0043] See also Figure 1 , Figures 3 to 11 The embodiment of the present invention provides a display substrate 30, including a base substrate, wherein the base substrate includes a display area and a peripheral area located around the display area; the display substrate 30 also includes:

[0044] A valid binding pad 10 and a test binding pad 11 both located in the peripheral area;

[0045] A signal line 12, wherein the signal line 12 is located in the peripheral area, and the signal line 12 is coupled to the effective binding pad 10 and the test binding pad 11 respectively, and the signal line 12 includes a first fold line portion 121, and the distance between the first end of the first fold line portion 121 and the effective binding pad 10 is smaller than the distance between the second end of the first fold line portion 121 and the effective binding pad 10, the first end is coupled to the test binding pad 11, and the second end is coupled to the effective binding pad 10.

[0046] Exemplarily, the display substrate 30 is applied to a liquid crystal display device and can be used as an array substrate in the liquid crystal display device, but is not limited thereto.

[0047] Exemplarily, the display substrate 30 includes a display area and a peripheral area, and the peripheral area at least partially surrounds the display area. For example, the peripheral area surrounds the display area, but is not limited thereto.

[0048] Exemplarily, the effective binding pad 10 is used to bind the driving structure 32 of the display substrate 30 during normal display, and the driving structure 32 is bound to the effective binding pad 10, and the other parts located on the substrate are bonded to the substrate by glue. The test binding pad 11 is used to bind the driving structure 32 of the display substrate 30 during testing. The driving structure 32 may include a chip on film (COF), a flexible circuit board, a driving chip, etc., but is not limited thereto.

[0049] like Figure 1 and Figure 2 As shown, when the display product is repaired, the driving structure 32 will be subjected to an upward pulling force (as shown by the wide arrow in the figure) during the removal process. This pulling force acts preferentially on the test binding pad 11 near the edge of the display substrate 30 through the anisotropic conductive adhesive (English: Anisotropic Conductive Film, referred to as: ACF), and the test binding pad 11 is coupled to one end of the signal line 12, and the other end of the signal line 12 is coupled to the effective binding pad 10, which will cause the test binding pad 11 to pull the effective binding pad 10 from the base substrate through the signal line 12. According to research, the peeling force on the test binding pad 11 can be decomposed into a horizontal peeling force (the peeling force is parallel to the base substrate, such as the peeling force in the first direction) and a vertical peeling force (the peeling force is perpendicular to the base substrate). If the horizontal peeling force on the signal line 12 is consistent with the horizontal peeling force on the test binding pad 11 (i.e., the actual peeling direction of the signal line 12), when the adhesion between the test binding pad 11 and the signal line 12 and the base substrate is weak, it is easy to peel off from the base substrate, and at the same time pull the effective binding pad 10 to peel off from the base substrate.

[0050] Exemplarily, on a horizontal plane parallel to the base substrate, the peeling force in a first direction on the test binding pad 11 is the peeling force in the horizontal direction on the test binding pad 11. On a horizontal plane parallel to the base substrate, the peeling force in a second direction on the first fold line portion 121 is the peeling force in the horizontal direction on the first fold line portion 121. The angle formed between the first direction and the second direction is greater than 90 degrees.

[0051] Exemplarily, the distance between the first end of the first fold line portion 121 and the effective binding pad 10 is smaller than the distance between the second end of the first fold line portion 121 and the effective binding pad 10, the first end is indirectly coupled to the test binding pad 11, and the second end is indirectly coupled to the effective binding pad 10. The peeling force is first transmitted from the test binding pad 11 to the first end, and then to the second end.

[0052] According to the specific structure of the display substrate 30, in the display substrate 30 provided in the embodiment of the present invention, the distance between the first end of the first fold line portion 121 and the effective binding pad 10 is smaller than the distance between the second end of the first fold line portion 121 and the effective binding pad 10, the first end is coupled to the test binding pad 11, and the second end is coupled to the effective binding pad 10; so that when the test binding pad 11 is subjected to a peeling force in a first direction, when the peeling force is transmitted to the first fold line portion 121 along the signal line, the first fold line portion 121 will be subjected to a peeling force in a second direction, and the angle formed between the first direction and the second direction is greater than 90 degrees. This arrangement makes the direction of the peeling force on the first fold line 121 opposite to the peeling force on the test binding pad 11, so that under the action of the peeling force, the signal line 12 can be broken at the position where the first fold line 121 is located, thereby effectively blocking the path of the peeling force along the first fold line 121 to the effective binding pad 10, effectively improving the problem of metal leads and effective binding pads 10 falling off in display products, and ensuring the quality of display products. The display substrate 30 provided by the embodiment of the present invention can meet the rework operation requirements, ensure the normal delivery of display products, and avoid losses.

[0053] In the display substrate 30 provided in the embodiment of the present invention, the problem of effective binding pad 10 falling off, which is easy to occur in display products, is improved without changing other processes, without increasing other risks, without increasing production costs, and without affecting production capacity.

[0054] In the display substrate 30 provided in the embodiment of the present invention, the problem of the effective binding pad 10 easily falling off in display products is improved, and the corrosion of the effective binding pad 10 by water vapor and oxygen at the falling position is avoided.

[0055] like Figures 3 to 11 As shown, in some embodiments, the signal line 12 includes at least one blocking unit 20, the blocking unit 20 includes the first fold line portion 121 and two second fold line portions 122, the two second fold line portions 122 are arranged along a third direction and are at least partially staggered along the first direction, and the third direction intersects with the first direction; the first fold line portion 121 is respectively coupled to the two second fold line portions 122; on a horizontal plane parallel to the base substrate, the test binding pad 11 is subjected to a peeling force in a first direction, the first fold line portion 121 is subjected to a peeling force in a second direction, and the angle formed between the first direction and the second direction is greater than 90 degrees.

[0056] Exemplarily, the third direction is perpendicular to the first direction, but is not limited thereto.

[0057] Illustratively, the first fold line portion 121 is directly coupled to the second fold line portion 122 ; or, the first fold line portion 121 is indirectly coupled to the second fold line portion 122 .

[0058] Exemplarily, of the two second fold line portions 122 , one of the second fold line portions 122 is closer to the test binding pad 11 , and the other second fold line portion 122 is closer to the effective binding pad 10 .

[0059] Exemplarily, the signal line 12 includes at least one of the blocking unit 20 and the Z-shaped unit 21 , and the test binding pad 11 is coupled to the valid binding pad 10 through the blocking unit 20 and the Z-shaped unit 21 .

[0060] Exemplarily, the blocking unit 20 is close to the test binding pad 11 , and the Z-shaped unit 21 is close to the valid binding pad 10 .

[0061] In the display substrate 30 provided in the above embodiment, the blocking unit 20 is provided to include the first fold line portion 121 and the two second fold line portions 122, so that the signal line 12 can gradually extend toward the effective binding pad 10, thereby achieving the coupling of the signal line 12 with the test binding pad 11 and the effective binding pad 10 respectively.

[0062] In the display substrate 30 provided in the above embodiment, the blocking unit 20 is arranged closer to the test binding pad 11, so as to block the peeling force in the area close to the test binding pad 11, thereby effectively blocking the path of the peeling force being transmitted to the effective binding pad 10 along the first fold line portion 121, effectively improving the problem of metal leads and effective binding pads 10 easily falling off in display products, and ensuring the quality of display products.

[0063] like Figure 3 and Figure 4 As shown, in some embodiments, the blocking unit 20 further includes:

[0064] There are two third fold line portions 123, one of which is coupled to the first end of the first fold line portion 121 and the second fold line portion 122 respectively, and the other third fold line portion 123 is coupled to the second end of the first fold line portion 121 and the other second fold line portion 122 respectively.

[0065] Exemplarily, the two third fold line portions 123 are staggered along the first direction, one of the third fold line portions 123 is closer to the test binding pad 11 , and the other of the third fold line portions 123 is closer to the effective binding pad 10 .

[0066] The above-mentioned setting method effectively extends the transmission path of the peeling force in the blocking unit 20. Under the action of the peeling force, the signal line 12 can break at the position where the first fold line portion 121 is located, thereby effectively blocking the peeling force from being transmitted along the first fold line portion 121 to the effective binding pad 10, effectively improving the problem of metal leads and effective binding pads 10 easily falling off in display products, and ensuring the quality of display products.

[0067] The above configuration extends the length of the signal line 12 and effectively reduces the loading of the signal line 12 .

[0068] like Figure 3 and Figure 4 As shown, in some embodiments, at least a portion of the first fold line portion 121 is located between the two second fold line portions 122 , and an extension direction of the first fold line portion 121 is the same as an extension direction of the second fold line portion 122 .

[0069] The above configuration ensures that, on a horizontal plane parallel to the base substrate, the test binding pad 11 is subjected to a peeling force in a first direction, and the first fold line portion 121 is subjected to a peeling force in a second direction, and the angle formed between the first direction and the second direction is equal to 180 degrees.

[0070] The above-mentioned arrangement makes the peeling force on the first fold line portion 121 be opposite to the peeling force on the test binding pad 11, so that under the action of the peeling force, the signal line 12 can break at the position where the first fold line portion 121 is located, thereby effectively blocking the path of the peeling force being transmitted to the effective binding pad 10 along the first fold line portion 121, effectively improving the problem of metal leads and effective binding pads 10 easily falling off in display products, and ensuring the quality of display products.

[0071] like Figure 3 and Figure 4As shown, in some embodiments, the angle between the third fold line portion 123 and the second fold line portion 122 coupled thereto is less than or equal to 90 degrees.

[0072] The above-mentioned arrangement makes the peeling force on the first fold line portion 121 be opposite to the peeling force on the test binding pad 11, so that under the action of the peeling force, the signal line 12 can break at the position where the first fold line portion 121 is located, thereby effectively blocking the path of the peeling force being transmitted to the effective binding pad 10 along the first fold line portion 121, effectively improving the problem of metal leads and effective binding pads 10 easily falling off in display products, and ensuring the quality of display products.

[0073] like Figures 5 to 8 As shown, in some embodiments, the blocking unit 20 further includes:

[0074] At least one fourth fold line portion 124 , the first end of the first fold line portion 121 is coupled to one of the second fold line portions 122 via the at least one fourth fold line portion 124 , and the second end of the first fold line portion 121 is directly coupled to another of the second fold line portions 122 .

[0075] The above-mentioned arrangement method forms a non-right-angle design between the fourth fold line portion 124 and the second fold line portion 122, and forms a non-right-angle design between the first fold line portion 121 and the second fold line portion 122, which effectively extends the transmission path of the peeling force in the blocking unit 20, and at the same time makes the peeling force exerted on the first fold line portion 121 and the peeling force exerted on the test binding pad 11 in opposite directions, so that under the action of the peeling force, the signal line 12 can break at the position where the first fold line portion 121 is located, thereby effectively blocking the path of the peeling force being transmitted to the effective binding pad 10 along the first fold line portion 121, effectively improving the problem of metal leads and effective binding pads 10 easily falling off in display products, and ensuring the quality of display products.

[0076] like Figure 5 and Figure 6 As shown, in some embodiments, the blocking unit 20 includes a fourth fold line portion 124, the first end of the first fold line portion 121 is coupled to the second fold line portion 122 through the fourth fold line portion 124, and the angle formed between the fourth fold line portion 124 and the second fold line portion 122 coupled thereto is greater than 90 degrees.

[0077] The above-mentioned arrangement method forms a non-right-angle design between the fourth fold line portion 124 and the second fold line portion 122, and forms a non-right-angle design between the first fold line portion 121 and the second fold line portion 122, which effectively extends the transmission path of the peeling force in the blocking unit 20, and at the same time makes the peeling force exerted on the first fold line portion 121 and the peeling force exerted on the test binding pad 11 in opposite directions, so that under the action of the peeling force, the signal line 12 can break at the position where the first fold line portion 121 is located, thereby effectively blocking the path of the peeling force being transmitted to the effective binding pad 10 along the first fold line portion 121, effectively improving the problem of metal leads and effective binding pads 10 easily falling off in display products, and ensuring the quality of display products.

[0078] like Figure 7 and Figure 8 As shown, in some embodiments, the blocking unit 20 includes two fourth fold line portions 124, and the first end of the first fold line portion 121 is coupled to the second fold line portion 122 in sequence through the two fourth fold line portions 124, and among the two fourth fold line portions 124, the fourth fold line portion 124 close to the first fold line portion 121 extends along the third direction, and the angle formed between the fourth fold line portion 124 close to the second fold line portion 122 and the second fold line portion 122 is greater than 90 degrees.

[0079] The above-mentioned arrangement method forms a non-right-angle design between the fourth fold line portion 124 and the second fold line portion 122, a non-right-angle design between the two second fold line portions 122, and a non-right-angle design between the first fold line portion 121 and the second fold line portion 122, which effectively extends the transmission path of the peeling force in the blocking unit 20, so that the blocking unit 20 forms a multi-segment and multi-angle design; at the same time, the peeling force exerted on the first fold line portion 121 is opposite to the peeling force exerted on the test binding pad 11, so that under the action of the peeling force, the signal line 12 can be broken at the position where the first fold line portion 121 is located, thereby effectively blocking the path of the peeling force transmitted along the first fold line portion 121 to the effective binding pad 10, effectively improving the problem of metal leads and effective binding pads 10 falling off easily in display products, and ensuring the quality of display products.

[0080] like Figures 9 to 11 As shown, in some embodiments, the signal line 12 includes at least two blocking units 20, and the at least two blocking units 20 are coupled in sequence.

[0081] Exemplarily, the area of ​​the blocking unit 20 is larger than the area of ​​the Z-shaped unit 21 .

[0082] The above-mentioned setting that the signal line 12 includes at least two blocking units 20 can not only achieve multi-level blocking and better improve the blocking effect, but also increase the contact area between the signal line 12 and the base substrate, increase the adhesion between the signal line 12 and the base substrate, and further reduce the risk of the signal line 12 and the effective binding pad 10 being peeled off from the display substrate 30.

[0083] In some embodiments, the signal line 12 only includes the blocking unit 20 but does not include the Z-shaped unit 21 .

[0084] Exemplarily, the signal line 12 includes a plurality of blocking units 20 coupled in sequence.

[0085] The above-mentioned setting method can not only realize multi-level blocking and better improve the blocking effect, but also increase the contact area between the signal line 12 and the base substrate, increase the adhesion between the signal line 12 and the base substrate, and further reduce the risk of the signal line 12 and the effective binding pad 10 being peeled off from the display substrate 30.

[0086] An embodiment of the present invention further provides a display device, comprising the display substrate 30 provided in the above embodiment.

[0087] Exemplarily, the display device includes a liquid crystal display device, but is not limited thereto.

[0088] Exemplarily, the display device includes a display substrate 30 and a color filter substrate 31 that are arranged opposite to each other, and a liquid crystal layer is arranged between the display substrate 30 and the color filter substrate 31 .

[0089] It should be noted that the display device can be any product or component with a display function, such as a television, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device also includes a flexible circuit board, a printed circuit board and a backplane, etc.

[0090] In the display substrate provided in the above embodiment, the distance between the first end of the first fold line portion 121 and the effective binding pad 10 is set to be smaller than the distance between the second end of the first fold line portion 121 and the effective binding pad 10, the first end is coupled to the test binding pad 11, and the second end is coupled to the effective binding pad 10; so that when the test binding pad 11 is subjected to a peeling force in a first direction, when the peeling force is transmitted along the signal line to the first fold line portion 121, the first fold line portion 121 will be subjected to a peeling force in a second direction, and the angle formed between the first direction and the second direction is greater than 90 degrees. This setting method makes the peeling force on the first fold line portion 121 opposite to the peeling force on the test binding pad 11, so that under the action of the peeling force, the signal line 12 can be broken at the position where the first fold line portion 121 is located, thereby effectively blocking the path of the peeling force being transmitted along the first fold line portion 121 to the effective binding pad 10, effectively improving the problem of the metal lead and the effective binding pad 10 easily falling off in the display product, and ensuring the quality of the display product. The display substrate 30 provided by the embodiment of the present invention can meet the rework operation requirements, ensure the normal delivery of display products, and avoid losses. In the display substrate provided by the above embodiment, the problem of metal leads and effective binding pads falling off in display products is improved without changing other processes, without increasing other risks, production costs, and affecting production capacity.

[0091] The display device provided by the embodiment of the present invention also has the above-mentioned beneficial effects when it includes the above-mentioned display substrate, which will not be described in detail here.

[0092] It should be noted that the "same layer" in the embodiment of the present invention may refer to a film layer on the same structural layer. Or, for example, a film layer on the same layer may be a film layer for forming a specific pattern formed by the same film forming process, and then the film layer is patterned by the same mask through a single composition process to form a layer structure. Depending on the specific pattern, a single composition process may include multiple exposure, development or etching processes, and the specific pattern in the formed layer structure may be continuous or discontinuous. These specific patterns may also be at different heights or have different thicknesses.

[0093] In the various method embodiments of the present invention, the serial numbers of the steps cannot be used to limit the sequence of the steps. For ordinary technicians in this field, without paying creative work, changes to the sequence of the steps are also within the protection scope of the present invention.

[0094] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiment, since it is basically similar to the product embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the product embodiment.

[0095] Unless otherwise defined, the technical terms or scientific terms used in this disclosure should be understood by people with ordinary skills in the field to which the present invention belongs. "First", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect", "couple" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0096] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” or “under” another element, it can be “directly on” or “under” the other element or intervening elements may be present.

[0097] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0098] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A display substrate, characterized in that: The invention comprises a base substrate, wherein the base substrate comprises a display area and a peripheral area located around the display area; the display substrate further comprises: a valid binding pad and a test binding pad both located in the peripheral area; a signal line, the signal line being located in the peripheral area, the signal line being coupled to the effective binding pad and the test binding pad respectively, the signal line comprising a first fold line portion, the distance between a first end of the first fold line portion and the effective binding pad being smaller than the distance between a second end of the first fold line portion and the effective binding pad, the first end being coupled to the test binding pad, and the second end being coupled to the effective binding pad; The signal line includes at least one blocking unit, and the blocking unit includes the first fold line portion and two second fold line portions, the two second fold line portions are arranged along a third direction and are at least partially staggered along the first direction, and the third direction intersects with the first direction; the first fold line portion is coupled to the two second fold line portions respectively; on a horizontal plane parallel to the base substrate, the test binding pad is subjected to a peeling force in a first direction, the first fold line portion is subjected to a peeling force in a second direction, and an angle formed between the first direction and the second direction is greater than 90 degrees.

2. The display substrate according to claim 1, characterized in that: The blocking unit further comprises: Two third fold line portions, one of which is coupled to the first end of the first fold line portion and a second fold line portion respectively, and the other third fold line portion is coupled to the second end of the first fold line portion and the other second fold line portion respectively.

3. The display substrate according to claim 2, characterized in that: At least a portion of the first fold line portion is located between the two second fold line portions, and an extending direction of the first fold line portion is the same as an extending direction of the second fold line portion.

4. The display substrate according to claim 3, characterized in that: An included angle between the third fold line portion and the second fold line portion coupled thereto is less than or equal to 90 degrees.

5. The display substrate according to claim 1, characterized in that: The blocking unit further comprises: At least one fourth fold line portion, the first end of the first fold line portion is coupled to one of the second fold line portions through the at least one fourth fold line portion, and the second end of the first fold line portion is directly coupled to another of the second fold line portions.

6. The display substrate according to claim 5, characterized in that: The blocking unit includes a fourth fold line portion, a first end of the first fold line portion is coupled to the second fold line portion through the fourth fold line portion, and an angle formed between the fourth fold line portion and the second fold line portion coupled thereto is greater than 90 degrees.

7. The display substrate according to claim 5, characterized in that: The blocking unit includes two fourth fold line portions, and the first end of the first fold line portion is coupled to the second fold line portion through the two fourth fold line portions in sequence. Among the two fourth fold line portions, the fourth fold line portion close to the first fold line portion extends along the third direction, and the angle formed between the fourth fold line portion close to the second fold line portion and the second fold line portion is greater than 90 degrees.

8. The display substrate according to any one of claims 1 to 7, characterized in that: The signal line includes at least two blocking units, and the at least two blocking units are coupled in sequence.

9. A display device, characterized in that: The display substrate comprises the display substrate as claimed in any one of claims 1 to 8.

Images