Substrate and cutting method thereof, electronic device and electronic equipment

Abstract

A substrate and a cutting method thereof, an electronic device and an electronic device, which relate to the field of substrate processing and are used to improve product yield. The substrate includes: at least two sides; and at least one end, each end connecting two adjacent sides. Each end includes a cutting segment and two breaking segments, one end of the cutting segment is connected to one of the two adjacent sides through a breaking segment, and the other end of the cutting segment is connected to the other of the two adjacent sides through another breaking segment. The cutting segment is configured to be formed by cutting with a tool, and the breaking segment is configured to be formed under the action of a physical force. The substrate provided by the present disclosure can prevent the laser from being reflected to the electronic components on the substrate, thereby facilitating the prevention of burning of the electronic components and reducing product defects.

Description

Technical Field

[0001] The present disclosure relates to the field of substrate processing, and in particular to a substrate and a cutting method thereof, an electronic device and an electronic device. Background Art

[0002] When preparing a substrate, the related art first uses a cutter wheel to cut the substrate motherboard into multiple separate substrates; then uses a laser to cut the corners of the substrate through an external cutting process. The external cutting process refers to the laser directly cutting from one edge of the substrate to the other edge of the substrate, thereby cutting off the corner of the substrate. However, the substrate carries electronic components. When the laser cuts to the edge of the substrate, the edge of the substrate will refract the laser into the inside of the substrate, causing the laser to reflect back and forth inside the substrate. At this time, the laser is easily reflected onto the electronic components of the substrate, which can easily burn the electronic components and cause product defects. Summary of the invention

[0003] The purpose of the present disclosure is to provide a substrate and a cutting method thereof, an electronic device and an electronic device, so as to improve the product yield.

[0004] In order to achieve the above objectives, the present disclosure provides the following technical solutions:

[0005] In one aspect, a substrate is provided. The substrate comprises: at least two sides; and at least one end, each end connecting two adjacent sides. Each end comprises a cutting segment and two breaking segments, one end of the cutting segment is connected to one of the two adjacent sides through a breaking segment, and the other end of the cutting segment is connected to the other of the two adjacent sides through another breaking segment. The cutting segment is configured to be formed by cutting with a tool, and the breaking segment is configured to be formed under the action of a physical force.

[0006] In some embodiments, the orthographic projection of the cutting segment on the plane where the substrate is located includes: a first arc, and the arc center of the first arc is located on the inner side of the substrate.

[0007] In some embodiments, the orthographic projection of the cutting segment on the plane where the substrate is located further includes: a second arc, a first end of the second arc is connected to the orthographic projection of one of the broken segments on the plane where the substrate is located, and a second end of the second arc is directly or indirectly connected to the first end of the first arc; an arc center of the second arc is located outside the substrate; and / or a third arc, a first end of the third arc is connected to the orthographic projection of another of the broken segments on the plane where the substrate is located, and a second end of the third arc is directly or indirectly connected to the second end of the first arc; an arc center of the third arc is located outside the substrate.

[0008] In some embodiments, when the second arc is directly connected to the first arc, and / or the third arc is directly connected to the first arc; the radius of the second arc and / or the radius of the third arc is r 21 , r 21 Satisfies the following formula:

[0009]

[0010] Among them, the value range of k1 is 1 to 2; r1 is the radius of the first arc; s is the first limiting value; α is the central angle corresponding to the auxiliary arc, the auxiliary arc is obtained by extending the first arc, and the distances from the opposite ends of the auxiliary arc to the two adjacent sides are equal to the second limiting value.

[0011] In some embodiments, when the second arc is indirectly connected to the first arc, and / or the third arc is indirectly connected to the first arc; the orthographic projection of the cutting segment on the plane where the substrate is located also includes: a first straight line segment, the first end of the first straight line segment is connected to the second end of the second arc, and the second end of the first straight line segment is connected to the first end of the first arc; and / or, a second straight line segment, the first end of the second straight line segment is connected to the second end of the third arc, and the second end of the second straight line segment is connected to the second end of the first arc.

[0012] In some embodiments, the first straight line segment is tangent to the second circular arc and the first circular arc at the same time, and / or the second straight line segment is tangent to the third circular arc and the first circular arc at the same time.

[0013] In some embodiments, the radius of the second arc and / or the radius of the third arc is r 22 , r 22 Satisfies the following formula:

[0014]

[0015] Among them, the value range of k1 is 1 to 2; r1 is the radius of the first arc; s is the first limiting value; α is the central angle corresponding to the auxiliary arc, the auxiliary arc is obtained by extending the first arc, and the distances from the opposite ends of the auxiliary arc to the two adjacent sides are equal to the second limiting value; u is the third limiting value.

[0016] In some embodiments, the third limit value is substantially equal to 0.05 mm.

[0017] In some embodiments, when the second arc is indirectly connected to the first arc, and / or the third arc is indirectly connected to the first arc; the orthographic projection of the cutting segment on the plane where the substrate is located also includes: a fourth arc, the first end of the fourth arc is connected to the second end of the second arc, and the second end of the fourth arc is connected to the first end of the first arc; and / or a fifth arc, the first end of the fifth arc is connected to the second end of the third arc, and the second end of the fifth arc is connected to the second end of the first arc.

[0018] In some embodiments, the fourth arc is inscribed in the first arc, and the fourth arc is circumscribed in the second arc; and / or, the fifth arc is inscribed in the first arc, and the fifth arc is circumscribed in the third arc.

[0019] In some embodiments, when the second arc is indirectly connected to the first arc, and / or the third arc is indirectly connected to the first arc; the orthographic projection of the cutting segment on the plane where the substrate is located also includes: a first straight line segment and a fourth arc, the first end of the first straight line segment is connected to the second end of the second arc, the second end of the first straight line segment is connected to the first end of the fourth arc, and the second end of the fourth arc is connected to the first end of the first arc; and / or a second straight line segment and a fifth arc, the first end of the second straight line segment is connected to the second end of the third arc, the second end of the second straight line segment is connected to the first end of the fifth arc, and the second end of the fifth arc is connected to the second end of the first arc.

[0020] In some embodiments, the first straight line segment is tangent to the second arc and the fourth arc at the same time, and the fourth arc is inscribed in the first arc; and / or, the second straight line segment is tangent to the third arc and the fifth arc at the same time, and the fifth arc is inscribed in the first arc.

[0021] In some embodiments, the radius of the second arc and / or the radius of the third arc is r 23 , r 23 Satisfies the following formula:

[0022]

[0023] Among them, the value range of k1 is 1 to 2; n is the formula The minimum value of L, α is the central angle corresponding to the auxiliary arc, the auxiliary arc is obtained by extending the first arc, the distances from the opposite ends of the auxiliary arc to the two adjacent sides are equal to the second limiting value, r1 is the radius of the first arc, and s is the first limiting value.

[0024] In some embodiments, the radius of the fourth arc and / or the fifth arc is r4, r4=k2·r1; wherein the value range of k2 is 0.5-0.8, and r1 is the radius of the first arc.

[0025] In some embodiments, the radius of the first arc ranges from 7.01mm to 8.74mm; the radius of the second arc and / or the radius of the third arc ranges from 0.15mm to 0.3mm; the radius of the fourth arc and / or the radius of the fifth arc ranges from 5mm to 6mm; the length of the first straight line segment and / or the length of the second straight line segment ranges from 0.3mm to 0.52mm.

[0026] In some embodiments, the shortest distance from each point of the cutting segment in the orthographic projection of the plane where the substrate is located to the circle where the first arc is located is less than or equal to a first limiting value.

[0027] In some embodiments, the first limit value is approximately equal to 0.04 mm.

[0028] In some embodiments, a size of each of the fracture segments along a first direction is a second limited value; the first direction is parallel to the plane where the substrate is located, and perpendicular to the edge connected to the fracture segment.

[0029] In some embodiments, the second limiting value ranges from 0.06 mm to 0.1 mm.

[0030] In some embodiments, the second limiting value ranges from 0.1 mm to 0.3 mm.

[0031] In another aspect, an electronic device is provided, comprising: at least one substrate as described in any one of the above embodiments.

[0032] In some embodiments, the electronic device is any one of a display panel, a touch panel, a microfluidic chip or an electronic chip.

[0033] In some embodiments, the electronic device is a display panel; the display panel further includes: at least one metal wire, which is arranged in the display panel and located at the periphery of the display panel. Wherein, when the orthographic projection of the cut section of the substrate on the plane where the substrate is located includes a first arc and a second arc, the shortest distance between the first arc and the metal wire is greater than the shortest distance between the second arc and the metal wire; and / or, when the orthographic projection of the cut section of the substrate on the plane where the substrate is located includes a first arc and a third arc, the shortest distance between the first arc and the metal wire is greater than the shortest distance between the third arc and the metal wire; and / or, when the orthographic projection of the cut section of the substrate on the plane where the substrate is located includes a first arc and a first straight line segment, the shortest distance between the first arc and the metal wire is greater than the shortest distance between the first straight line segment and the metal wire; And / or, when the orthographic projection of the cut section of the substrate on the plane where the substrate is located includes a first arc and a second straight line segment, the shortest distance between the first arc and the metal wire is greater than the shortest distance between the second straight line segment and the metal wire; and / or, when the orthographic projection of the cut section of the substrate on the plane where the substrate is located includes a first arc and a fourth arc, the shortest distance between the first arc and the metal wire is greater than the shortest distance between the fourth arc and the metal wire; and / or, when the orthographic projection of the cut section of the substrate on the plane where the substrate is located includes a first arc and a fifth arc, the shortest distance between the first arc and the metal wire is greater than the shortest distance between the fifth arc and the metal wire.

[0034] In another aspect, an electronic device is provided, comprising: the electronic device as described in any one of the above embodiments.

[0035] On the other hand, a method for cutting a substrate is provided, comprising: cutting a substrate motherboard into a plurality of substrates with corners to be removed along a first cutting path; determining a second cutting path on the substrate with corners to be removed; the second cutting path corresponding to a cutting segment of the substrate as described in any one of the above embodiments; cutting the substrate with corners to be removed along the second cutting path, and then removing the corners by using physical force to form a substrate as described in any one of the above embodiments.

[0036] The substrate and cutting method thereof, electronic device and electronic device provided by the present disclosure have the following beneficial effects:

[0037] The substrate provided by the present disclosure has an end portion including both a cutting segment and two broken segments located at both ends of the cutting segment, so that when removing the corner of the substrate whose corner is to be removed, the laser will not be emitted to the edge of the substrate, so the laser will not be refracted into the interior of the substrate through the edge of the substrate, and the laser will not be reflected back and forth inside the substrate, which can prevent the laser from being reflected to the electronic components on the substrate, thereby preventing the electronic components from being burned and reducing product defects.

[0038] The beneficial effects that can be achieved by the substrate cutting method, electronic device and electronic device provided in the present disclosure are the same as the beneficial effects that can be achieved by the substrate provided by the above technical solution, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0040] Figure 1 is a structural diagram of a substrate according to some embodiments;

[0041] Figure 2 is a structural diagram of another substrate according to some embodiments;

[0042] Figure 3A and Figure 3B is a structural diagram of yet another substrate according to some embodiments;

[0043] Figure 4A and Figure 4B is a structural diagram of another substrate according to some embodiments;

[0044] Figure 5 is a structural diagram of another substrate according to some embodiments;

[0045] Figure 6 is a structural diagram of another substrate according to some embodiments;

[0046] Figure 7 is a structural diagram of another substrate according to some embodiments;

[0047] Figure 8 is a flow chart of a substrate cutting method according to some embodiments;

[0048] Fig. 9is a structural diagram of a substrate motherboard according to some embodiments;

[0049] Fig.10 is a structural diagram of a substrate whose corner is to be removed according to some embodiments;

[0050] Fig.11 is a structural diagram of an electronic device according to some embodiments;

[0051] Fig.12 is a structural diagram of an electronic device according to some embodiments;

[0052] Fig.13 is a structural diagram of another electronic device according to some embodiments;

[0053] Fig.14 is a structural diagram of a display panel according to some embodiments;

[0054] Fig.15 is a structural diagram of another display panel according to some embodiments. DETAILED DESCRIPTION

[0055] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0056] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0057] Some embodiments of the present disclosure provide a substrate 1. Figure 1 As shown, the substrate 1 includes at least two side portions 11 and at least one end portion 12, and each end portion 12 connects two adjacent side portions 11. It should be noted that Figure 1 Only one end 12 of the substrate 1 is schematically shown, and the number of the ends 12 on the substrate 1 is not limited, that is, in practical applications, only one end 12 may be provided on the substrate 1, or two or more ends 12 may be provided. Moreover, when two or more ends 12 are provided on the substrate 1, each end 12 is connected to two adjacent sides 11. For example, when the substrate 1 includes four sides, if an end is provided between any two adjacent sides, the number of ends included in the substrate should be four.

[0058] like Figure 1 As shown, each end 12 includes a cutting segment 121 and two breaking segments 122, one end of the cutting segment 121 is connected to one of the two adjacent side portions 11 through a breaking segment 122, and the other end of the cutting segment 121 is connected to the other of the two adjacent side portions 11 through another breaking segment 122.

[0059] The cutting segment 121 is configured to be formed by cutting with a tool. For example, the tool may be a tool with a cutting function such as a laser cutting machine, and the laser cutting machine may use a laser to cut out the cutting segment 121 of the substrate 1. The breaking segment 122 is configured to be formed under the action of a physical force. For example, the physical force may be gravity, pressure applied by an external object, etc. In the case where the physical force is gravity, after the cutting segment 121 is formed by cutting with a tool, the corner of the substrate to be removed will naturally break under the action of gravity, thereby forming the substrate 1; in the case where the physical force is pressure applied by an external object, after the cutting segment 121 is formed by cutting with a tool, the corner of the substrate to be removed will naturally break under the action of pressure applied by the external object (such as a human hand or a mechanical device, etc.), thereby forming the substrate 1.

[0060] In the present embodiment, since the end portion 12 of the substrate 1 includes both a cutting segment 121 and two breaking segments 122 located at both ends of the cutting segment 121, when removing the corner of the substrate to be removed, the laser will not be emitted toward the edge 11 of the substrate 1, and therefore the laser will not be refracted into the interior of the substrate 1 through the edge 11 of the substrate 1, and further, the laser will not be reflected back and forth inside the substrate 1, which can prevent the laser from being reflected onto the electronic components on the substrate 1, thereby helping to prevent burns to the electronic components and reduce product defects.

[0061] In some embodiments, Figure 2As shown, the orthographic projection of the cutting segment 121 on the plane where the substrate 1 is located includes a first arc R1, and the arc center O1 of the first arc R1 is located on the inner side of the substrate 1. In this way, the substrate with the corner to be removed can form a relatively regular rounded corner after cutting and breaking the corner, thereby improving the versatility of the substrate 1.

[0062] It should be noted that the orthographic projection of the cutting segment 121 on the plane where the substrate 1 is located may include only the first arc R1; or, in addition to the first arc R1, may also include other parts (eg Figure 3A , Figure 3B , Figure 4A , Figure 4B ,as well as Figure 5 to Figure 7 At least one of the second arc R2, the third arc R3, the fourth arc R4, the fifth arc R5, the first straight line segment L1 and the second straight line segment L2 shown).

[0063] In the case where the orthographic projection of the cutting segment 121 on the plane where the substrate 1 is located also includes other parts, the shortest distance from each point of the cutting segment 121 in the orthographic projection of the plane where the substrate 1 is located to the circle where the first arc R1 is located is less than or equal to the first limit value. The first limit value may be related to the cutting accuracy of the substrate required to be achieved by the product. For example, when the cutting accuracy required to be achieved by the product does not exceed h (that is, the cutting offset of the cutting segment 121 does not exceed h), the first limit value may be set to be less than or equal to h. At the same time, considering the positioning error of the cutting tool, the first limit value may be set to be approximately equal to 0.8h, for example, when h = 0.05mm, the first limit value is approximately equal to 0.04mm. Here, "approximately equal to" means that it can fluctuate up and down by ten percent, that is, when h = 0.05mm, the value range of the first limit value may be between 0.036mm and 0.044mm. At this time, it is easier to obtain a cutting segment 121 that meets the cutting accuracy, which is conducive to improving the problem of overcutting or undercutting of the cutting segment 121.

[0064] In some embodiments, Figure 1 As shown, the size of each fracture segment 122 along the first direction is a second limited value d; the first direction is a direction E parallel to the plane where the substrate 1 is located and perpendicular to the edge 11 connected to the fracture segment 122, or the first direction is a direction F parallel to the plane where the substrate 1 is located and perpendicular to the edge 13 connected to the fracture segment 122. The size of the second limited value d can only be sufficient to satisfy the requirement that the fracture segment 122 can be formed under the action of physical force after the cutting segment 121 is formed.

[0065] Exemplarily, the value range of the second limit value d is 0.06 mm to 0.1 mm. For example, the value range of the second limit value d can be 0.06 mm to 0.08 mm. In other words, the width of each fracture segment 122 along the first direction E can be 0.06 mm, 0.07 mm or 0.1 mm, etc. This design makes it easier to break the corner of the substrate to be removed after the cutting segment 121 is cut on the substrate to be removed, and it is not easy for undesirable residual substances to appear on the substrate 1 after the corner is broken.

[0066] On this basis, in order to make the breaking segment 122 break along a predetermined track, reduce the unwanted residual substances on the breaking segment 122, and reduce the burrs on the surface of the breaking segment 122, some embodiments of the present disclosure also improve the cutting segment 121 of the substrate 1. For example, including but not limited to the cutting segment 121 described in some of the following embodiments.

[0067] In some embodiments, Figure 3A , Figure 4A , Figure 5 and Figure 6 As shown, the orthographic projection of the cutting segment 121 on the plane where the substrate 1 is located includes not only the first arc R1 but also a second arc R2 and / or a third arc R3.

[0068] The first end of the second arc R2 is connected to the orthographic projection of a fracture segment 122 (i.e., one of the two fracture segments 122 included in the end portion 12 corresponding to the second arc R2) on the plane where the substrate 1 is located, and the second end of the second arc R2 is directly or indirectly connected to the first end of the first arc R1 (e.g., Figure 3A It is shown in FIG. 2 that the second end of the second arc R2 is directly connected to the first end of the first arc R1. Figure 4A , Figure 5 and Figure 6 The second end of the second arc R2 is indirectly connected to the first end of the first arc R1); the arc center of the second arc R2 is located outside the substrate. This design makes the stress distribution of the corner of the substrate to be removed relatively uniform when it is broken, and it is not easy to have stress concentration phenomenon. Therefore, the corner can be broken along a predetermined trajectory better, so that the broken section 122 of the substrate 1 is not easy to have a lot of residues, and the broken section 122 is not easy to have burrs.

[0069] The first end of the third arc R3 is connected to the orthographic projection of another fractured segment 122 (i.e., the other of the two fractured segments 122 included in the end portion 12 corresponding to the third arc R3) on the plane where the substrate 1 is located, and the second end of the third arc R3 is directly or indirectly connected to the second end of the first arc R1 (e.g., Figure 3A It is shown in FIG. 1 that the second end of the third arc R3 is directly connected to the first end of the first arc R1. Figure 4A , Figure 5 and Figure 6 The second end of the third arc R3 is indirectly connected to the first end of the first arc R1); the arc center of the third arc R3 is located outside the substrate. This design makes the stress distribution of the corner of the substrate to be removed relatively uniform when it is broken, and it is not easy to have stress concentration phenomenon. Therefore, the corner can be broken along a predetermined trajectory better, so that the broken section of the substrate 1 is not easy to have more residues, and the broken section is not easy to have burrs.

[0070] When the second end of the second arc R2 is directly connected to the first end of the first arc R1, and / or the second end of the third arc R3 is directly connected to the second end of the first arc R1:

[0071] For any one of the second arc R2 and the third arc R3, the position of the arc center O1 of the first arc R1 and the radius r1 of the first arc R1 are known during design. Figure 3B , firstly, a first auxiliary line m1 and a second auxiliary line m2 are made on the side of any edge 11 close to the first arc R1. The first auxiliary line m1 is parallel to the orthographic projection of the edge 11 on the plane where the substrate 1 is located, and the distance from the first auxiliary line m1 to the orthographic projection of the edge 11 on the plane where the substrate 1 is located is the second limit value as described above (for example, the value range of the second limit value can be 0.06mm~0.1mm); the second auxiliary line m2 is parallel to the orthographic projection of the edge 11 on the plane where the substrate 1 is located, and the distance from the second auxiliary line m2 to the orthographic projection of the edge 11 on the plane where the substrate 1 is located is the sum of the second limit value and the above-mentioned first limit value (for example, the value range of the first limit value can be 0.036mm~0.044mm).

[0072] Then, determine that among the intersection points where the circle where the first arc R1 is located intersects with the second auxiliary line m2, the intersection point closest to the first arc R1 is the first position point T1; and determine that among the intersection points where the circle where the first arc R1 is located intersects with the first auxiliary line m1, the intersection point closest to the first arc R1 is the second position point T2.

[0073] Next, a third auxiliary line m3 is made through the first position point T1 at a preset angle λ with the first auxiliary line m1, and the third auxiliary line m3 intersects the first auxiliary line m1 at the third position point T3. This embodiment does not limit the value of the preset angle λ, as long as the third position point T3 is located between the first position point T1 and the second position point T2 in a direction parallel to the first auxiliary line m1. For example, the preset angle λ can be 30° to 60°.

[0074] Finally, an arc is drawn through the third position point T3 and is tangent to both the third auxiliary line m3 and the first arc R1 . This arc is the second arc R2 or the third arc R3 .

[0075] On this basis, illustratively, the radius of the second arc and / or the radius of the third arc is r 21 , r 21 Satisfies the following formula:

[0076]

[0077] Among them, the value range of k1 is 1 to 2; r1 is the radius of the first arc; s is the first limit value; α is the central angle corresponding to the auxiliary arc, the auxiliary arc is obtained by extending the first arc, and the distances from the opposite ends of the auxiliary arc to the two adjacent sides are respectively equal to the second limit value. Among them, the first limit value and the second limit value have been described above and will not be repeated here.

[0078] See also Figure 3B , taking the preset angle λ equal to 45° as an example. According to the geometric relationship, the radius r of the second arc R2 or the third arc R3 21 is equal to the length of line segment T1 T3 multiplied by tanε1. Among them, the length of line segment T1 T3 is equal to s is the above-mentioned first limiting value.

[0079] At the same time, according to the geometric relationship, we know that the length of line segment O1N is r1·cos(45°-α / 2)-s;

[0080] In addition, based on Figure 3B It can be seen that the tangent line passing through the first position point T1 and tangent to the desired arc (i.e., the second arc R2 or the third arc R3) almost coincides with the tangent line passing through the first position point T1 and tangent to the first arc R1, so From this we can get:

[0081]

[0082] It should be noted that the above derivation process is described by taking the preset angle λ equal to 45° as an example, and in this embodiment, the design The value range of k1 is designed to be 1 to 2, so that a variety of second arcs R2 or third arcs R3 that meet the requirements can be obtained.

[0083] On this basis, the center angle of the second circular arc R2 or the second circular arc R3 can also be calculated according to the obtained ε1, that is, the center angle of the second circular arc R2 or the second circular arc R3 is equal to 2×(90°-ε1).

[0084] In this embodiment, the center angle of the second arc R2 may be 25° to 40°; the center angle of the third arc R3 may also be 25° to 40°.

[0085] In the case where the second end of the second arc R2 is indirectly connected to the first end of the first arc R1, and / or the second end of the third arc R3 is indirectly connected to the second end of the first arc R1:

[0086] For example, Figure 4B As shown, the orthographic projection of the cutting segment 121 on the plane where the substrate is located also includes a first straight line segment L1 and / or a second straight line segment L2.

[0087] The first end of the first straight line segment L1 is connected to the second end of the second arc R2, and the second end of the first straight line segment L1 is connected to the first end of the first arc R1. With this design, a smooth transition can be achieved between the first arc R1 and the second arc R2 through the first straight line segment L1, so that the cutting segment 121 is less likely to have sharp corners, which can better meet the use requirements of the substrate.

[0088] The second end of the second straight line segment L2 is connected to the second end of the third arc R3, and the second segment of the second straight line segment L2 is connected to the second end of the first arc R1. With this design, a smooth transition can be achieved between the first arc R1 and the third arc R3 through the second straight line segment L2, so that the cutting segment 121 is less likely to have sharp corners, which can better meet the use requirements of the substrate.

[0089] On this basis, if Figure 4B As shown, in some examples, the first straight line segment L1 is tangent to the second arc R2 and the first arc R1 at the same time, and / or the second straight line segment L2 is tangent to the third arc R3 and the first arc R1 at the same time. This can achieve a smoother transition effect between the first arc R1 and the second arc R2, and / or between the first arc R1 and the third arc R3.

[0090] When designing, see Figure 4B , the position of the arc center O1 of the first arc R1 and the radius r1 of the first arc R1 are known. Figure 4B, first, a fourth auxiliary line m4, a fifth auxiliary line m5 and a sixth auxiliary line m6 are made on the side of any edge 11 close to the cutting section 121. The fourth auxiliary line m4 is parallel to the orthographic projection of the edge 11 on the plane where the substrate 1 is located, and the distance from the fourth auxiliary line m4 to the orthographic projection of the edge 11 on the plane where the substrate 1 is located is the second limit value as described above (for example, the value range of the second limit value can be 0.06mm~0.1mm); the fifth auxiliary line m5 is parallel to the orthographic projection of the edge 11 on the plane where the substrate 1 is located, and the distance from the fifth auxiliary line m5 to the orthographic projection of the edge 11 on the plane where the substrate 1 is located is the sum of the second limit value and the first limit value (for example, the value range of the first limit value can be 0.036mm~0.044mm). The sixth auxiliary line m6 is parallel to the orthographic projection of the edge 11 on the plane where the substrate 1 is located, and the distance from the sixth auxiliary line m6 to the orthographic projection of the edge 11 on the plane where the substrate 1 is located is the sum of the second limit value, the first limit value and the third limit value. Exemplarily, the third limit value is approximately equal to 0.05 mm, which generally means that the third limit value can fluctuate up and down by 10% on the basis of 0.05 mm. Setting the third limit value in this way is conducive to achieving a smooth transition between the first straight line segment L1 (or the second straight line segment L1) formed subsequently and the arc adjacent thereto.

[0091] Then, determine that among the intersection points where the circle where the first arc R1 is located intersects with the fourth auxiliary line m4, the intersection point closest to the first arc R1 is the fourth position point T4; determine that among the intersection points where the circle where the first arc R1 is located intersects with the fifth auxiliary line m5, the intersection point closest to the first arc R1 is the fifth position point T5; and determine that among the intersection points where the circle where the first arc R1 is located intersects with the sixth auxiliary line m6, the intersection point closest to the first arc R1 is the sixth position point T6.

[0092] Next, a seventh auxiliary line m7 is made through the fifth position point T5 at a preset angle λ with the fourth auxiliary line m4, and the seventh auxiliary line m7 intersects the fourth auxiliary line m4 at the seventh position point T7. This embodiment does not limit the value of the preset angle λ, as long as the seventh position point T7 is located between the fourth position point T4 and the fifth position point T5 in a direction parallel to the fourth auxiliary line m4. For example, the preset angle λ can be 30° to 60°.

[0093] Finally, an arc (i.e., the second arc R2 or the third arc R3) is drawn through the seventh position point T7 and is tangent to both the seventh auxiliary line m7 and the line segment T5 T6. At the same time, the portion of the line segment T5 T6 between the drawn arc (i.e., the second arc R2 or the third arc R3) and the first arc R1 is the first straight line segment L1 or the second straight line segment L2.

[0094] On this basis, illustratively, the radius of the second arc R2 and / or the radius of the third arc R3 is r 22 , r 22 Satisfies the following formula:

[0095]

[0096] Among them, the value range of k1 is 1 to 2; α is the center angle corresponding to the auxiliary arc, the auxiliary arc is obtained by extending the first arc, r1 is the radius of the first arc; s is the first limit value; α is the center angle corresponding to the auxiliary arc, the auxiliary arc is obtained by extending the first arc, and the distance from the opposite ends of the auxiliary arc to the two adjacent sides is equal to the second limit value; u is the third limit value. Among them, the first limit value, the second limit value and the third limit value have been described above and will not be repeated here.

[0097] See also Figure 4B , taking the preset angle λ equal to 45° as an example. According to the geometric relationship, the radius r of the second arc and / or the third arc 22 is equal to the length of line segment T5 T7 multiplied by tanε2. Among them, the length of line segment T5 T7 is equal to s is the first limiting value as described above.

[0098] At the same time, according to the geometric relationship, it can be known that the length of the line segment O1B1 is r1·cos(45°-α / 2)-s, and the length of the line segment O1B2 is r1·cos(45°-α / 2)-su.

[0099] On this basis, according to the Pythagorean theorem:

[0100] The length of line segment T5B1 is The length of line segment T6B2 is Furthermore, we know that:

[0101]

[0102] and From this we can get:

[0103]

[0104] It should be noted that the above derivation process is described by taking the preset angle λ equal to 45° as an example, and the design in this embodiment is as follows:

[0105]

[0106] The value range of k1 is designed to be 1 to 2, so that a variety of second arcs R2 or third arcs R3 that meet the requirements can be obtained.

[0107] On this basis, the center angle of the second circular arc R2 or the second circular arc R3 can also be calculated according to the obtained ε2, that is, the center angle of the second circular arc R2 or the second circular arc R3 is equal to 2×(90°-ε2).

[0108] In this embodiment, the center angle of the second arc R2 may be 30° to 40°; the center angle of the third arc R3 may also be 30° to 40°.

[0109] In the case where the second end of the second arc R2 is indirectly connected to the first end of the first arc R1, and / or the second end of the third arc R3 is indirectly connected to the second end of the first arc R1:

[0110] Another example is Figure 5 As shown, the orthographic projection of the cutting segment 121 on the plane where the substrate is located also includes a fourth arc R4 and / or a fifth arc R5.

[0111] The first end of the fourth arc R4 is connected to the second end of the second arc R2, and the second end of the fourth arc R4 is connected to the first end of the first arc. With this design, a smooth transition can be achieved between the first arc R1 and the second arc R2 through the fourth arc R4, so that the cutting section 121 is less likely to have sharp corners, which can better meet the use requirements of the substrate.

[0112] The second end of the fifth arc R5 is connected to the second end of the third arc R3, and the second section of the fifth arc R5 is connected to the second end of the first arc. With this design, the first arc R1 and the second arc R2 can be smoothly transitioned through the fifth arc R5, so that the cutting section 121 is not prone to sharp corners, which can better meet the use requirements of the substrate.

[0113] Another example is Figure 6 As shown, the orthographic projection of the cutting segment 121 on the plane where the substrate is located further includes a first straight line segment L1 and a fourth circular arc R4; and / or further includes a second straight line segment L2 and a fifth circular arc R5.

[0114] like Figure 6 As shown, the first end of the first straight line segment L1 is connected to the second end of the second arc R2, the second end of the first straight line segment L1 is connected to the first end of the fourth arc R4, and the second end of the fourth arc R4 is connected to the first end of the first arc. With this design, a smooth transition can be achieved between the first arc R1 and the second arc R2 through the first straight line segment L1 and the fourth arc R4, so that the cutting segment 121 is less likely to have sharp corners, and can better meet the use requirements of the substrate.

[0115] like Figure 6As shown, the first end of the second straight line segment L2 is connected to the second end of the third arc R3, the second end of the second straight line segment L2 is connected to the first end of the fifth arc, and the second end of the fifth arc R5 is connected to the second end of the first arc. With this design, a smooth transition can be achieved between the first arc R1 and the second arc R2 through the second straight line segment L2 and the fifth arc R5, so that the cutting segment 121 is less likely to have sharp corners, and can better meet the use requirements of the substrate.

[0116] On this basis, some examples, such as Figure 6 As shown, the first straight line segment L1 is tangent to the second arc R2 and the fourth arc R4 at the same time, and / or the second straight line segment L2 is tangent to the third arc R3 and the fifth arc R5 at the same time. In this way, a smoother transition effect can be achieved between the second arc R2 and the fourth arc R4, and / or between the third arc R3 and the fifth arc R5, thereby further enhancing the transition effect between the first arc R1 and the second arc R2, and / or between the first arc R1 and the third arc R3, and significantly reducing the probability of sharp corners in the cutting segment 121.

[0117] for Figure 5 and Figure 6 The scheme shown, when designing, refer to Figure 7 First, an eighth auxiliary line m8 is made on the side of any edge 11 close to the cutting section 121, and the eighth auxiliary line m8 is parallel to the orthographic projection of the edge 11 on the plane where the substrate 1 is located, and the distance from the eighth auxiliary line m8 to the orthographic projection of the edge 11 on the plane where the substrate 1 is located is the second limiting value as described above (for example, the second limiting value can range from 0.06 mm to 0.1 mm).

[0118] Then, determine that among the intersection points where the circle where the first arc R1 is located intersects with the eighth auxiliary line m8, the intersection point closest to the first arc R1 is the eighth position point T8;

[0119] Next, the radius r2 of the offset arc is determined according to the radius r1 of the first arc R1 and the first limiting value s, i.e., r2=r1-s. Thus, the position of the offset arc can be determined. That is, the offset arc limits the allowable cutting offset of the product, and the cutting position during actual cutting should not exceed the offset arc.

[0120] A ninth auxiliary line m9 is formed through the eighth position point T8 at a preset angle λ with the eighth auxiliary line m8, and the ninth auxiliary line m9 intersects the offset arc at the ninth position point T9. This embodiment does not limit the value of the preset angle λ, as long as the ninth position point T9 is closer to the first arc R1 than the eighth position point T8. For example, the preset angle λ can be 30° to 60°.

[0121] Draw the tangent line T9T of the offset arc R0 through the ninth position point T9 10 , the tangent line T9T 10 Intersects the circle where the first arc R1 is located at the tenth position point T 10 .

[0122] Finally, through the eighth position point T8, make a connection with the ninth auxiliary line m9 and line segment T9 T 10 The tangent arc (i.e., the second arc R2 or the third arc R3), the end of which is opposite to the eighth position point T8 is located on the line segment T9 T 10 superior.

[0123] On this basis, for Figure 5 In the scheme shown, an arc (i.e., Figure 5 The fourth arc R4 in the example); an arc is made between the third arc R3 and the first arc R1, which is inscribed in the first arc R1 and circumscribed in the third arc R3 (i.e. Figure 5 The fifth arc R5 in the example).

[0124] And for Figure 6 The scheme shown is Figure 7 As shown, at the tenth position point T 10 By making a rounding at the point, we can get the line segment T9T 10 The line segment T9 is tangent to and inscribed in the first arc R1 (ie, the fourth arc R4 or the fifth arc R5). 10 The portion between the second arc R2 and the fourth arc R4 is the first straight line segment L1, and the line segment T9 is 10 The portion between the third arc R3 and the fifth arc R5 is the second straight line segment L2.

[0125] for Figure 5 and Figure 6 In the illustrated solution, for example, the radius of the second arc R2 and / or the radius of the third arc R3 is r 23 , r 23 Satisfies the following formula:

[0126]

[0127] Among them, the value range of k1 is 1 to 2; n is the formula The minimum value of L in α is the auxiliary arc (such as Figure 7 The auxiliary arc R01 shown in FIG. 1 is obtained by extending the first arc R1, and the distances from the two opposite ends of the auxiliary arc to the two adjacent sides are equal to the second limiting value (such as Figure 7The vertical distance from one endpoint T8 of the auxiliary arc R01 to the edge 11 is equal to the second limiting value), r1 is the radius of the first arc R1, and s is the first limiting value; wherein, the first limiting value and the second limiting value have been explained before and will not be repeated here.

[0128] When designing, see Figure 7 The radius of the second arc R2 and / or the radius of the third arc R3 is r 23 , taking the preset angle λ equal to 45° as an example. According to the geometric relationship, r 23 It is equal to the length of line segment T8 T9 multiplied by tan∠T8 T9 O2.

[0129] like Figure 7 As shown, β = 180° - λ - (45° + α / 2). Among them, α and λ are known quantities. Therefore, β = 90° - α / 2, that is, β is also a known quantity.

[0130] Set the length of line segment T8 T9 to L. According to the cosine theorem, That is to say Here, see Figure 7 It should be noted that there are two intersection points between the ninth auxiliary line m9 and the circle where the offset arc is located, so two L values ​​can be calculated according to the above formula, and the length of the line segment T8 T9 is the minimum value n of the two L values.

[0131] On this basis, see Figure 7 According to the cosine theorem, And line segment T9 T 10 is the tangent of the offset arc, so line segment T9 T 10 It is perpendicular to the line segment T9 O1 (i.e. the radius of the offset arc). Therefore, ∠T8 T9 T 10 =360°-90°-ε. Then we get ∠T8 T9 T 10 The value of

[0132] Then according to trigonometric functions, we can get At the same time, since the radius of the offset arc r3 = r1-s,

[0133] It should be noted that the above derivation process is described by taking the preset angle λ equal to 45° as an example, and in this embodiment, the design The value range of k1 is 1 to 2, so that a variety of second arcs R2 or third arcs R3 that meet the requirements can be corresponded.

[0134] On this basis, the center angle of the second arc R2 or the second arc R3 can also be calculated according to the obtained ∠T8 T9 O2, that is, the center angle of the second arc R2 or the second arc R3 is equal to 2×(90°-∠T8T9O2).

[0135] In this embodiment, the center angle of the second arc R2 may be 30° to 40°; the center angle of the third arc R3 may also be 30° to 40°.

[0136] exist Figure 5 and Figure 6 The scheme shown is based on an exemplary, see Figure 7 The radius of the fourth arc R4 and / or the fifth arc R5 is r4, r4=k2·r1; wherein the value range of k2 is 0.5-0.8, and r1 is the radius of the first arc R1. This design enables a smooth transition between the first straight line segment L1 and the first arc R1, and / or between the second straight line segment L2 and the first arc R1, thereby making it difficult for the cutting segment 121 to have sharp corners.

[0137] The center angle of the fourth arc R4 may be 8° to 12°; the center angle of the fifth arc R5 may also be 8° to 12°.

[0138] In some embodiments, the radius of the first arc R1 ranges from 7.01 mm to 8.74 mm; the radius of the second arc R2 and / or the radius of the third arc R3 ranges from 0.15 mm to 0.3 mm; the radius of the fourth arc R4 and / or the radius of the fifth arc R5 ranges from 5 mm to 6 mm; the length of the first straight line segment L1 and / or the length of the second straight line segment L2 ranges from 0.3 mm to 0.52 mm. This design makes it difficult for the cut section of the substrate formed by cutting to have sharp corners, thereby improving the smoothness of the cut section of the substrate.

[0139] The first circular arc R1, the second circular arc R2, the third circular arc R3, the fourth circular arc R4, the fifth circular arc R5, the first straight line segment L1 and the second straight line segment L2 may be arranged in any of the following ways.

[0140] Method 1: The radius of the first arc R1 is about 7.78 mm; the radius of the second arc R2 and / or the radius of the third arc R3 is about 0.3 mm; the radius of the fourth arc R4 and / or the radius of the fifth arc R5 is about 5 mm; the length of the first straight line segment L1 and / or the length of the second straight line segment L2 is about 0.3 mm. Here, "about" means that in actual application, each dimension can fluctuate up and down by 10%.

[0141] Mode 2: The radius of the first arc R1 is about 7.93 mm; the radius of the second arc R2 and / or the radius of the third arc R3 is about 0.18 mm; the radius of the fourth arc R4 and / or the radius of the fifth arc R5 is about 6 mm; the length of the first straight line segment L1 and / or the length of the second straight line segment L2 is about 0.36 mm. Here, "about" means that in actual application, the corresponding dimensional values ​​can fluctuate up and down by 10%.

[0142] Method 3: The radius of the first arc R1 is about 8.74 mm; the radius of the second arc R2 and / or the radius of the third arc R3 is about 0.24 mm; the radius of the fourth arc R4 and / or the radius of the fifth arc R5 is about 6 mm; the length of the first straight line segment L1 and / or the length of the second straight line segment L2 is about 0.44 mm. Here, "about" means that in actual application, the corresponding dimensions can fluctuate up and down by 10%.

[0143] Method 4: The radius of the first arc R1 is about 7.41 mm; the radius of the second arc R2 and / or the radius of the third arc R3 is about 0.19 mm; the radius of the fourth arc R4 and / or the radius of the fifth arc R5 is about 5.5 mm; the length of the first straight line segment L1 and / or the length of the second straight line segment L2 is about 0.52 mm. Here, "about" means that in actual application, the corresponding dimensions can fluctuate up and down by 10%.

[0144] Method 5: The radius of the first arc R1 is about 7.01 mm; the radius of the second arc R2 and / or the radius of the third arc R3 is about 0.15 mm; the radius of the fourth arc R4 and / or the radius of the fifth arc R5 is about 5 mm; the length of the first straight line segment L1 and / or the length of the second straight line segment L2 is about 0.48 mm. Here, "about" means that in actual application, the corresponding dimensions can fluctuate up and down by 10%.

[0145] Through the above methods 1 to 5, the widths of the two ends of the corner of the substrate to be removed (i.e., the width of the portion of the corner corresponding to the second arc R2 and the third arc R3) are larger, so that the stress distribution of the corner is more uniform when it is broken, and stress concentration is less likely to occur. Therefore, the corner can be better broken along a predetermined trajectory, so that the broken section of the substrate 1 is less likely to have a lot of residues and burrs are less likely to appear in the broken section.

[0146] On the other hand, some embodiments of the present disclosure provide an electronic device 200, such as Figure 8As shown, the electronic device 100 includes at least one substrate 1 as described in any of the above embodiments. An electronic component 201 is arranged on the substrate 1. The electronic component 201 can be, for example, a thin film transistor, a capacitor or other components, or an electrode, an electronic circuit or other structures; or the electronic component 201 can be a combination of two or more of various electronic components or structures.

[0147] The electronic device 200 may be any one of a display panel, a touch panel, a microfluidic chip or an electronic chip, which is not limited in the embodiments of the present disclosure.

[0148] When the electronic device 200 is a display panel, the display panel may be a liquid crystal display panel, an electroluminescent display panel, or a photoluminescent display panel. Fig. 9 The case where the display panel is a liquid crystal display panel 01 is exemplarily shown; Fig.10 The case where the display panel is an electroluminescent display panel 03 or a photoluminescent display panel 03 is exemplarily shown.

[0149] like Fig. 9 As shown, in the case where the display panel is a liquid crystal display panel 01, the main structure of the liquid crystal display panel 01 includes an array substrate 011, a counter substrate 012, and a liquid crystal layer 013 disposed between the array substrate 011 and the counter substrate 012. The array substrate 011 and the counter substrate 012 are bonded together by a sealing adhesive, so that the liquid crystal layer 013 is confined within the area surrounded by the sealing adhesive.

[0150] like Fig.10 As shown, when the display panel is an electroluminescent display panel 02 or a photoluminescent display panel 02, the main structure of the electroluminescent display panel 03 or the photoluminescent display panel 03 includes a display substrate 031 and an encapsulation layer 032 for encapsulating the display substrate 031. Here, the encapsulation layer 032 can be an encapsulation film or an encapsulation substrate.

[0151] On the other hand, some embodiments of the present disclosure provide an electronic device 300, see Fig. 9 and Fig.10 The electronic device 300 includes the electronic device 200 described in any of the above embodiments.

[0152] The electronic device 300 may be a display device, and the display device may be an AR helmet, AR glasses, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or any other product or component with a display function.

[0153] like Fig. 9As shown, the display device may be a liquid crystal display device 301 (Liquid Crystal Display, LCD for short); Fig.10 As shown, the display device may also be an electroluminescent display device 302 or a photoluminescent display device 302. Moreover, when the display device is an electroluminescent display device, the electroluminescent display device may be an organic electroluminescent display device (Organic Light-Emitting Diode, referred to as OLED) or a quantum dot electroluminescent display device (Quantum Dot Light Emitting Diodes, referred to as QLED) or a micro LED (such as Mini-LED or Micro-LED) display device. When the display device is a photoluminescent display device, the photoluminescent display device may be a quantum dot photoluminescent display device.

[0154] In the case where the display device is a liquid crystal display device 301. In some examples, such as Fig. 9 As shown, the display device includes a liquid crystal display panel 01 and a backlight assembly 02. The backlight assembly 02 is used to provide a light source for the liquid crystal display panel 01 so that the liquid crystal display panel 01 can display images normally.

[0155] In the case where the display device is an electroluminescent display device 302 or a photoluminescent display device 302. In some examples, such as Fig.10 As shown, the display device includes an electroluminescent display panel 03 or a photoluminescent display panel 03, a polarizer 04, a first optically clear adhesive (OCA for short) 05 and a cover glass 02 which are arranged in sequence.

[0156] The electronic device and the electronic equipment provided by the embodiments of the present disclosure include the substrate 1 in any of the above embodiments. Therefore, the electronic device and the electronic equipment have all the beneficial effects of the above substrate 1, which will not be described in detail here.

[0157] In particular, when the display device is a television or other display device with a large display area (such as greater than or equal to 10 inches), the thickness of the substrate 1 is relatively large due to the structural strength requirements of the device. If laser cutting is used in this case, the laser energy required for cutting is high and the light spot is large, so it is necessary to set a larger second limit value d to prevent the laser from cutting to the edge of the substrate. The edge of the substrate will refract the laser into the inside of the substrate, causing the laser to reflect back and forth inside the substrate, resulting in defective products. Exemplarily, when the display device is a television or other display device with a large display area (such as greater than or equal to 10 inches), the value range of the second limit value can be 0.1mm to 0.3mm. Exemplarily, the size of the second limit value can be set to increase with the area of ​​the display area of ​​the display device.

[0158] On the other hand, some embodiments of the present disclosure provide a method for cutting a substrate.

[0159] join Fig.11 The cutting method includes steps 101 to 103.

[0160] Step 101 : cutting a substrate motherboard 100 into a plurality of substrates 10 with corners to be removed along a first cutting path S1 .

[0161] It should be noted that the substrate motherboard 100 may be an array substrate motherboard and a counter substrate motherboard (eg Fig. 9 The liquid crystal display panel 01 shown in the figure can also be a separate array substrate motherboard or an opposing substrate motherboard; of course, it can also be a self-luminous display substrate motherboard, or other substrate motherboards with electronic components, which is not limited by the present disclosure. In some examples, see Fig.12 The display motherboard 100 is cut along a first cutting path S1 using a cutter wheel to obtain a plurality of substrates 10 with corners to be removed.

[0162] See also Fig.13 For each substrate 10 to be corner-removed, the substrate 10 to be corner-removed has at least one corner Q. For example, Fig.13 As shown, when the substrate 10 with corners to be removed is cut in a rectangular shape, the substrate 10 with corners to be removed may have four corners Q.

[0163] Step 102: Fig.13 As shown, a second cutting path S2 is determined on the substrate 10 whose corner is to be removed. The second cutting path S2 corresponds to the cutting section of the substrate 1 described in any of the above embodiments (such as Figure 1 , Figure 2 , Figure 3A , Figure 3B , Figure 4A , Figure 4B , Figure 5 , Figure 6 or Figure 7 Here, “corresponding” means that the orthographic projection of the first cutting path S2 on the plane where the substrate 1 is located overlaps with the orthographic projection of the cutting segment 121 on the plane where the substrate 1 is located.

[0164] Among them, Fig.13 As shown, there are gaps d between the two end points of the second cutting path S2 and the two first edges of the corner Q.

[0165] Step 103, cutting the substrate 10 with the corner to be removed along the second cutting path S2, and then removing the corner Q of the substrate 10 with the corner to be removed by physical force, so as to obtain the substrate 1 described in any of the above embodiments. It should be noted that, in some examples, a laser can be used to cut the substrate 10 with the corner to be removed along the second cutting path S2; the physical force can be gravity, or a force applied by an external object (such as a human hand or a mechanical device, etc.).

[0166] Such a design ensures that when a laser is used to cut the corner Q of the substrate 10 to be removed along the second cutting path S2, since there are gaps d between the two end points of the second cutting path S2 and the two edges of the corner Q, the laser will not be emitted to the edge of the substrate 1, and therefore the laser will not be refracted into the interior of the substrate 1 through the edge of the substrate 1, and further the laser will not be reflected back and forth inside the substrate 1, which can prevent the laser from being reflected onto the circuit in the peripheral area of ​​the substrate, thereby helping to prevent circuit burns and reduce poor product display.

[0167] Moreover, the cutting segment corresponding to the second cutting path S2 is as above Figure 3A , Figure 3B , Figure 4A , Figure 4B , Figure 5 , Figure 6 or Figure 7 In the case of the cutting segment shown, in the substrate 1 formed by the cutting method, the fracture trajectories of the two fracture segments are closer to the predetermined trajectory, that is, the corner portion that should have been broken is not likely to remain on the fracture segment, and burrs are not likely to appear on the surface of the fracture segment, thereby improving the cutting yield of the substrate.

[0168] Fig.14 A display panel is shown, and the cutting method of the substrate can be directly applied to the display panel. Fig.14 As shown, the display panel is divided into a display area A and a peripheral area S. Fig.14 Take the peripheral area S surrounding the display area A as an example for illustration. The display area A is provided with a plurality of sub-pixels P. The peripheral area S is used for wiring, and the gate driving circuit can also be provided in the peripheral area S.

[0169] The display area A includes a plurality of sub-pixels P. For the convenience of explanation, in this embodiment, the plurality of sub-pixels P are arranged in a matrix form as an example. In this case, the sub-pixels P arranged in a row along the horizontal direction X are called sub-pixels in the same row, and the sub-pixels P arranged in a row along the vertical direction Y are called sub-pixels in the same column. The sub-pixels in the same row can be connected to one gate line, and the sub-pixels in the same column can be connected to one data line.

[0170] When cutting the display panel, the substrate cutting method described in any of the above embodiments can be used to cut along the second cutting path S2 to remove the corner Q. In this way, the laser will not be reflected back and forth inside the display panel, and the laser can be prevented from being reflected to the circuit in the peripheral area of ​​the display panel, which is beneficial to prevent the circuit from being burned and reduce the phenomenon of poor product display. At the same time, the corner Q can be better broken along the predetermined track, that is, the surface formed after removing the corner Q is not likely to have residues of the part that should have been removed, and burrs are not likely to appear on the surface, thereby improving the cutting yield of the display panel.

[0171] like Fig.15 As shown, the cut display panel also includes at least one metal wire K located in the display panel but outside the display panel, and the metal wire K can be, for example, a ground wire, an electromagnetic shielding wire, a gate wire, or a data wire. The metal wire K is arranged close to the cutting segment, and there is no other wire between the metal wire K and the cutting segment.

[0172] Any point on the first arc R1 has the shortest distance from it to the metal wire K. By comparing the shortest distances from each point on R1 to the metal wire K, the shortest distance D1 between the first arc R1 and the metal wire K can be obtained. When the display panel after cutting has the following characteristics: Figure 3A In the structure shown, the cutting segment includes the second arc R2. Any point on the second arc R2 has the shortest distance to the metal wire K. By comparing the shortest distances from each point on the second arc R2 to the metal wire K, the shortest distance D2 between the second arc R2 and the metal wire K can be obtained; the positional relationship between the metal wire and the cutting segment is: D1>D2. Since the position close to the center of the end is relatively fragile compared to other positions and is prone to breakage or cracks, with such a structural design, the display panel after cutting can obtain a relatively large "electronic component safety distance" in the area close to the center of the end. That is, in the area close to the center of the end, the distance between the cutting segment and the electronic components of the display panel is relatively far, so the display function and life of the display panel can be less affected by end breakage or cracks, thereby improving the reliability of the display panel.

[0173] For example, when the cutting segment also includes the first straight line segment L1, similar to the definition of the shortest distance between the first arc R1 and the metal wire K, the shortest distance from the first straight line segment L1 to the metal wire K is D3, and the positional relationship between the metal wire K and the cutting segment is: D1>D3

[0174] For example, when the cutting segment also includes the fourth arc R4, similar to the definition of the shortest distance between the first arc R1 and the metal wire K, the shortest distance from the fourth arc R4 to the metal wire K is D4, and the positional relationship between the metal wire K and the cutting segment is: D1>D4

[0175] For example, Fig.15 As shown, when the cutting segment includes the second arc R2, the first straight line segment L1, and the fourth arc R4, similar to the definition of the shortest distance between the first arc R1 and the metal wire K, the shortest distances from the second arc R2, the first straight line segment L1, and the fourth arc R4 to the metal wire K are D2, D3, and D4, respectively, and the positional relationship between the metal wire K and the cutting segment is: D1>max(D2,D3,D4), where max(D2,D3,D4) represents the maximum value among D2, D3, and D4.

[0176] Exemplarily, the cutting segment includes a third arc R3. Similar to the definition of the shortest distance between the first arc R1 and the metal wire K, the shortest distance between the third arc R3 and the metal wire K is D2'. The positional relationship between the metal wire K and the cutting segment is: D1>D2'.

[0177] For example, when the cutting segment also includes the second straight segment L2, similar to the definition of the shortest distance between the first arc R1 and the metal wire K, the shortest distance from the second straight segment L2 to the metal wire K is D3', and the positional relationship between the metal wire K and the cutting segment is: D1>D3'

[0178] For example, when the cutting segment also includes the fifth arc R5, similar to the definition of the shortest distance between the first arc R1 and the metal wire K, the shortest distance from the fifth arc R5 to the metal wire K is D4', and the positional relationship between the metal wire K and the cutting segment is: D1>D4'

[0179] Exemplarily, when the cutting segment includes the third arc R3, the second straight line segment L2, and the fifth arc R5, similar to the definition of the shortest distance between the first arc R1 and the metal wire K, the shortest distances from the third arc R3, the second straight line segment L2, and the fifth arc R5 to the metal wire K are D2', D3', and D4', respectively, and the positional relationship between the metal wire K and the cutting segment is: D1>max(D2',D3',D4'), where max(D2',D3',D4') represents the maximum value among D2', D3', and D4'.

[0180] With such a structural design, based on the same principle, the panel structure given in the above example enables the cut display panel to obtain a relatively large "electronic component safety distance" in the area near the center of the end. That is, in the area near the center of the end, the distance between the cut section and the electronic components of the display panel is relatively far, so the display function and life of the display panel can be less affected by the breakage or cracks of the end, thereby improving the reliability of the display panel.

[0181] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be thought of by any person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. An electronic device, characterized in that: The electronic device is a display panel, and the display panel is a liquid crystal display panel, an electroluminescent display panel or a photoluminescent display panel; The electronic device comprises a substrate, wherein the substrate comprises: at least two sides; and, at least one end, each end connecting two adjacent sides; Each end portion includes a cutting segment and two breaking segments, one end of the cutting segment is connected to one of the two adjacent side portions through a breaking segment, and the other end of the cutting segment is connected to the other of the two adjacent side portions through another breaking segment; The cutting segment is configured to be formed by cutting with a tool, and the breaking segment is configured to be formed under the action of a physical force; The orthographic projection of the cutting segment on the plane where the substrate is located includes: a first arc, wherein the arc center of the first arc is located inside the substrate; a second arc, wherein a first end of the second arc is connected to an orthographic projection of one of the fracture segments on the plane where the substrate is located, and a second end of the second arc is directly or indirectly connected to a first end of the first arc; and a center of the second arc is located outside the substrate; and / or A third arc, wherein the first end of the third arc is connected to the orthographic projection of another of the fracture segments on the plane where the substrate is located, and the second end of the third arc is directly or indirectly connected to the second end of the first arc; and the arc center of the third arc is located outside the substrate.

2. The electronic device according to claim 1, characterized in that In the case where the second arc is directly connected to the first arc, and / or the third arc is directly connected to the first arc; the radius of the second arc and / or the radius of the third arc is r 21 , r 21 Satisfies the following formula: Among them, the value range of k1 is 1 to 2; r1 is the radius of the first arc; s is the first limiting value; α is the central angle corresponding to the auxiliary arc, the auxiliary arc is obtained by extending the first arc, and the distances from the opposite ends of the auxiliary arc to the two adjacent sides are equal to the second limiting value.

3. The electronic device according to claim 1, characterized in that: In the case where the second circular arc is indirectly connected to the first circular arc, and / or the third circular arc is indirectly connected to the first circular arc; The orthographic projection of the cutting segment on the plane where the substrate is located also includes: a first straight line segment, wherein a first end of the first straight line segment is connected to a second end of the second circular arc, and a second end of the first straight line segment is connected to a first end of the first circular arc; and / or, A second straight line segment, wherein a first end of the second straight line segment is connected to a second end of the third circular arc, and a second end of the second straight line segment is connected to a second end of the first circular arc.

4. The electronic device according to claim 3, characterized in that: The first straight line segment is tangent to the second circular arc and the first circular arc at the same time, and / or the second straight line segment is tangent to the third circular arc and the first circular arc at the same time.

5. The electronic device according to claim 3, characterized in that: The radius of the second arc and / or the radius of the third arc is r 22 , r 22 Satisfies the following formula: Among them, the value range of k1 is 1 to 2; r1 is the radius of the first arc; s is the first limiting value; α is the central angle corresponding to the auxiliary arc, the auxiliary arc is obtained by extending the first arc, and the distances from the opposite ends of the auxiliary arc to the two adjacent sides are equal to the second limiting value; u is the third limiting value.

6. The electronic device according to claim 5, characterized in that The third limit value is substantially equal to 0.05 mm.

7. The electronic device according to claim 1, characterized in that: In the case where the second circular arc is indirectly connected to the first circular arc, and / or the third circular arc is indirectly connected to the first circular arc; The orthographic projection of the cutting segment on the plane where the substrate is located also includes: a fourth circular arc, wherein a first end of the fourth circular arc is connected to a second end of the second circular arc, and a second end of the fourth circular arc is connected to a first end of the first circular arc; and / or, A fifth circular arc, wherein a first end of the fifth circular arc is connected to a second end of the third circular arc, and a second end of the fifth circular arc is connected to a second end of the first circular arc.

8. The electronic device according to claim 7, characterized in that: The fourth arc is inscribed in the first arc, and the fourth arc is circumscribed in the second arc; and / or, The fifth arc is inscribed in the first arc, and the fifth arc is circumscribed in the three arcs.

9. The electronic device according to claim 1, characterized in that: In the case where the second circular arc is indirectly connected to the first circular arc, and / or the third circular arc is indirectly connected to the first circular arc; The orthographic projection of the cutting segment on the plane where the substrate is located also includes: A first straight line segment and a fourth circular arc, wherein a first end of the first straight line segment is connected to a second end of the second circular arc, a second end of the first straight line segment is connected to a first end of the fourth circular arc, and a second end of the fourth circular arc is connected to a first end of the first circular arc; and / or, A second straight line segment and a fifth circular arc, wherein the first end of the second straight line segment is connected to the second end of the third circular arc, the second end of the second straight line segment is connected to the first end of the fifth circular arc, and the second end of the fifth circular arc is connected to the second end of the first circular arc.

10. The electronic device according to claim 9, characterized in that: The first straight line segment is tangent to the second arc and the fourth arc at the same time, and the fourth arc is inscribed in the first arc; and / or the second straight line segment is tangent to the third arc and the fifth arc at the same time, and the fifth arc is inscribed in the first arc.

11. The electronic device according to any one of claims 7 to 10, characterized in that: The radius of the second arc and / or the radius of the third arc is r 23 , r 23 Satisfies the following formula: Among them, the value range of k1 is 1 to 2; n is the formula The minimum value of L, α is the central angle corresponding to the auxiliary arc, the auxiliary arc is obtained by extending the first arc, the distances from the opposite ends of the auxiliary arc to the two adjacent sides are equal to the second limiting value, r1 is the radius of the first arc, and s is the first limiting value.

12. The electronic device according to any one of claims 7 to 10, characterized in that: The radius of the fourth arc and / or the fifth arc is r4, r4=k2·r1; wherein the value range of k2 is 0.5-0.8, and r1 is the radius of the first arc.

13. The electronic device according to claim 9 or 10, characterized in that: The radius of the first arc ranges from 7.01mm to 8.74mm; the radius of the second arc and / or the radius of the third arc ranges from 0.15mm to 0.3mm; the radius of the fourth arc and / or the radius of the fifth arc ranges from 5mm to 6mm; the length of the first straight line segment and / or the length of the second straight line segment ranges from 0.3mm to 0.52mm.

14. The electronic device according to claim 1, characterized in that The shortest distance between each point of the cutting segment in the orthographic projection of the plane where the substrate is located and the circle where the first arc is located is less than or equal to a first limiting value.

15. The electronic device according to any one of claims 2, 5 or 14, characterized in that: The first limit value is substantially equal to 0.04 mm.

16. The electronic device according to claim 11, characterized in that: The first limit value is substantially equal to 0.04 mm.

17. The electronic device according to claim 1, characterized in that The size of each of the fracture segments along the first direction is a second limited value; The first direction is parallel to the plane where the substrate is located, and is perpendicular to the edge connected to the broken segment.

18. The electronic device according to any one of claims 2, 5 or 17, characterized in that: The second limiting value ranges from 0.06 mm to 0.1 mm.

19. The electronic device according to claim 11, characterized in that The second limiting value ranges from 0.06 mm to 0.1 mm.

20. The electronic device according to any one of claims 2, 5 or 17, characterized in that: The second limiting value ranges from 0.1 mm to 0.3 mm.

21. The electronic device according to claim 11, characterized in that The second limiting value ranges from 0.1 mm to 0.3 mm.

22. The electronic device according to any one of claims 1 to 10, 14 and 17, characterized in that: The electronic device is a display panel; the display panel further comprises: At least one metal wire is disposed in the display panel and located at the periphery of the display panel; Wherein, when the orthographic projection of the cut section of the substrate on the plane where the substrate is located includes a first arc and a second arc, the shortest distance between the first arc and the metal wire is greater than the shortest distance between the second arc and the metal wire; and / or, When the orthographic projection of the cut section of the substrate on the plane where the substrate is located includes a first arc and a third arc, the shortest distance between the first arc and the metal wire is greater than the shortest distance between the third arc and the metal wire; and / or When the orthographic projection of the cut section of the substrate on the plane where the substrate is located includes a first circular arc and a first straight line segment, the shortest distance between the first circular arc and the metal wire is greater than the shortest distance between the first straight line segment and the metal wire; and / or In the case where the orthographic projection of the cut segment of the substrate on the plane where the substrate is located includes a first circular arc and a second straight line segment, the shortest distance between the first circular arc and the metal wire is greater than the shortest distance between the second straight line segment and the metal wire; and / or When the orthographic projection of the cut section of the substrate on the plane where the substrate is located includes a first arc and a fourth arc, the shortest distance between the first arc and the metal wire is greater than the shortest distance between the fourth arc and the metal wire; and / or When the orthographic projection of the cut segment of the substrate on the plane where the substrate is located includes a first arc and a fifth arc, the shortest distance between the first arc and the metal wire is greater than the shortest distance between the fifth arc and the metal wire.

23. An electronic device, characterized in that: include: The electronic device according to any one of claims 1 to 22.

24. A method for cutting a substrate, characterized in that: include: Cutting the substrate motherboard into a plurality of substrates with corners to be removed along a first cutting path; determining a second cutting path on the substrate at the corner to be removed; The second cutting path corresponds to a cutting section of a substrate in an electronic device according to any one of claims 1 to 22; The substrate with the corner to be removed is cut along the second cutting path, and then the corner is removed by physical force to form the substrate in the electronic device as claimed in any one of claims 1 to 22.

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