glass substrate

Abstract

This utility model discloses a glass substrate, relating to the field of packaging technology. The glass substrate of this utility model includes a substrate layer and an additive layer. The substrate layer includes a glass sheet and at least one set of protective members. Two protective members in the same set are spaced apart, and the glass sheet is disposed between the two protective members in the same set. The thickness of the protective members is not less than the thickness of the glass sheet. The additive layers are respectively disposed on both sides of the substrate layer along the thickness direction and are connected to the protective members and the glass sheet respectively. When adding layers to the surface of the glass sheet, the protective members can effectively disperse the stress during the hot pressing process, preventing the glass sheet from cracking due to localized stress concentration. Furthermore, in subsequent process steps, the protective members continue to participate in the fabrication of multilayer circuits as part of the glass substrate. The protective members, located on the outside of the glass sheet, can effectively protect the glass sheet, preventing the edges of the glass sheet from being exposed to the external environment and reducing the risk of damage to the glass sheet.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and in particular to a glass substrate. Background Technology

[0002] As the demand for AI computing power gradually increases and hardware circuits become increasingly complex, glass substrates, with their inherent electrical properties, excellent mechanical properties, good thermal conductivity, and low coefficient of thermal expansion, have become a key research focus for new advanced packaging technology substrates.

[0003] In the existing technology, thermoforming is required on a glass substrate to achieve the integration of multilayer circuits. However, the glass substrate is prone to breakage during the thermoforming process. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a glass substrate that can protect glass sheets and reduce the probability of glass sheet breakage.

[0005] The glass substrate according to a first aspect embodiment of the present invention includes:

[0006] The substrate layer includes a glass sheet and at least one set of protective members, with two protective members in the same set spaced apart. The glass sheet is disposed between the two protective members in the same set, and the thickness of the protective member is not less than the thickness of the glass sheet.

[0007] An additive layer is disposed on both sides of the substrate layer along the thickness direction and is connected to the protective component and the glass sheet respectively.

[0008] The glass substrate according to the embodiments of the present invention has at least the following beneficial effects:

[0009] The protective components are located on both sides of the glass sheet. Therefore, during the layering process on the surface of the glass sheet, the protective components effectively disperse the stress during hot pressing, preventing the glass sheet from cracking due to localized stress concentration. Furthermore, in subsequent manufacturing processes, the protective components continue to participate in the fabrication of multilayer circuits as part of the glass substrate. Located on the outer side of the glass sheet, the protective components effectively protect the glass sheet, preventing the edges from being exposed to the external environment and reducing the risk of damage.

[0010] According to some embodiments of the present invention, the substrate layer includes multiple sets of the protective members, and each set of the protective members is spaced apart along different directions.

[0011] According to some embodiments of the present invention, the protective members are sequentially connected to form a frame structure along the circumference of the glass sheet, and the frame structure is arranged around the glass sheet.

[0012] According to some embodiments of the present invention, the side of the glass sheet is spaced apart from the inner ring wall of the frame structure.

[0013] According to some embodiments of the present invention, the protective members in the same group are spaced apart along the diagonal direction of the glass sheet, the protective members are positioned corresponding to the corners of the glass sheet, and the protective members have an L-shaped structure.

[0014] According to some embodiments of the present invention, the glass sheet includes two first planes arranged opposite to each other along the thickness direction and four side surfaces located between the two first planes. The protective member includes a first protective part and a second protective part arranged intersectingly, wherein the first protective part is provided corresponding to one of the side surfaces and the second protective part is provided corresponding to an adjacent side surface.

[0015] According to some embodiments of the present invention, the glass sheet includes two first planes arranged opposite to each other along the thickness direction and four side surfaces located between the two first planes. Each first plane and each side surface is provided with a first fillet R1, where 0.3mm≤R1≤0.5mm.

[0016] According to some embodiments of this utility model, a second fillet R2 is provided at the junction of adjacent sides, where 3mm≤R2≤5mm.

[0017] According to some embodiments of the present invention, the glass substrate further includes two protective layers, which are disposed on the side of the additive layer away from the substrate layer.

[0018] According to some embodiments of the present invention, the additive layer includes a connecting layer and a conductive layer, wherein the conductive layer is connected to the substrate layer through the connecting layer.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a top view of the glass substrate according to an embodiment of the present invention;

[0022] Figure 2 This utility model Figure 1A cross-sectional view of the glass substrate in the embodiment;

[0023] Figure 3 for Figure 2 Enlarged view of region A in the middle;

[0024] Figure 4 This is a top view of a glass substrate according to another embodiment of the present invention;

[0025] Figure 5 This is a top view of a glass substrate according to another embodiment of the present invention.

[0026] Figure label:

[0027] Substrate layer 100; glass sheet 110; first plane 111; side surface 112; protective component 120; first protective part 121; second protective part 122;

[0028] Additive layer 200; Connecting layer 210; Conductive layer 220;

[0029] 300mm protective layer;

[0030] First fillet R1; Second fillet R2; Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] As the demand for AI computing power gradually increases and hardware circuits become increasingly complex, glass substrates, with their inherent electrical properties, excellent mechanical properties, good thermal conductivity, and low coefficient of thermal expansion, have become a key research focus for new advanced packaging technology substrates.

[0037] In the existing technology, thermoforming is required on a glass substrate to achieve the integration of multilayer circuits. However, the glass substrate is prone to breakage during the thermoforming process.

[0038] To solve the above problems, such as Figures 1 to 3 As shown, this application proposes an improved glass substrate structure, which includes a substrate layer 100 and an additive layer 200. The substrate layer 100 includes a glass sheet 110 and at least one set of protective members 120, each set of protective members 120 including two protective members 120. The glass sheet 110 has a thin rectangular structure. For ease of description, a reference surface is defined, which is perpendicular to the thickness direction of the glass sheet 110. That is, the reference surface is parallel to or coincides with the surface of the glass sheet 110, and the reference surface has intersecting first and second directions.

[0039] Both the protective element 120 and the glass sheet 110 are disposed on the reference surface. The protective elements 120 are arranged in pairs facing each other. Among them, the two protective elements 120 in the same pair are spaced apart along the first direction (reference). Figure 1 or Figure 4 The glass sheet 110 is disposed between the two protective members 120, with the side of the protective member 120 and the side surface 112 of the glass sheet 110 spaced apart (see reference). Figure 2 and Figure 3As shown, space is provided for the expansion of the glass sheet 110 during the hot-pressing lamination process, reducing the risk of breakage due to thermal stress. The thickness of the protective component 120 is not less than the thickness of the glass sheet 110. It can be understood that the thickness of the protective component 120 is equal to or slightly greater than the thickness of the glass sheet 110, which can disperse a certain amount of pressure on the glass sheet 110 without affecting the bonding quality between the additive layer 200 and the glass sheet 110. For example, the thickness of the glass sheet 110 is 0.7 mm, and the thickness of the protective component 120 is 0.7 mm to 0.8 mm.

[0040] Protective components 120 are located on both sides of the glass sheet 110. Therefore, when adding layers to the surface of the glass sheet 110, the protective components 120 can effectively disperse the stress during the hot-pressing process, preventing the glass sheet 110 from cracking due to localized stress concentration. It should be noted that the glass sheet 110 can be as follows: Figure 4 The rectangular structure shown can be used to make the protective member 120 a strip structure corresponding to the side 112 of the rectangular structure. Alternatively, the glass sheet 110 can be a circular structure (not shown in the figure), so the protective member 120 can be an arc-shaped structure corresponding to the side 112 of the circular structure.

[0041] It should be noted that the surface of protective component 120 is also covered with an additional layer of material, such as... Figure 2 and Figure 3 As shown, the additive layer 200 is formed on the substrate layer 100 by hot pressing. The additive layers 200 are respectively disposed on both sides of the substrate layer 100 along the thickness direction of the glass sheet 110, and are respectively connected to the protective member 120 and the glass sheet 110, thereby forming a robust integral structure. In subsequent process steps, the protective member 120 continues to participate in the fabrication of multilayer circuits as part of the glass substrate. The protective member 120, located on the outside of the glass sheet 110, can effectively protect the glass sheet 110, preventing the edges of the glass sheet 110 from being exposed to the external environment and reducing the risk of damage to the glass sheet 110.

[0042] Therefore, as Figure 1 As shown, in addition to two protective members 120 in the first direction, the substrate layer 100 also has two protective members 120 in the second direction intersecting the first direction. These two protective members 120 are spaced apart along the second direction, and the glass sheet 110 is disposed between them. That is, multiple sets of protective members 120 are spaced apart along different directions, and each protective member 120 is located on the opposite outer side of the glass sheet 110. This ensures that the glass sheet 110 can be effectively protected during the hot pressing process, further reducing the risk of breakage.

[0043] For example, such as Figure 1As shown, the two protective members 120 are arranged along the width direction of the glass sheet 110, and the two protective members 120 are arranged along the length direction of the glass sheet 110, or, as... Figure 5 As shown, two protective members 120 are arranged along the diagonal of the glass sheet 110, and two protective members 120 are arranged along the other diagonal of the glass sheet 110. Thus, each set of protective members 120 can form multi-directional protection for the glass sheet 110.

[0044] Furthermore, such as Figure 1 As shown, the protective components 120 are sequentially connected along the circumference of the glass sheet 110 to form a frame structure. A space is formed in the middle of the frame structure to accommodate the glass sheet 110, ensuring that each protective component 120 surrounds the outer periphery of the glass sheet 110. This ensures that every corner of the glass sheet 110 is uniformly protected during hot pressing and subsequent processing, effectively preventing cracking due to stress concentration and improving the overall stability and durability of the structure. Furthermore, since the protective components 120 are connected to form a whole, it also helps to improve production efficiency and simplify the assembly process, eliminating the need for individual positioning, fixing, and adjustment of each protective component 120.

[0045] Understandably, by forming multiple protective components 120 into a frame structure, the glass sheet 110 is tightly wrapped by the protective components 120 on all sides, forming a robust protective whole. This reduces the probability of glass electrode breakage during subsequent processing (such as line etching, electroplating, and layering) and use, extends service life, and ensures the efficiency and reliability of circuit integration. Simultaneously, the uniform distribution of the protective components 120 effectively disperses external pressure, improves the overall structure's compressive strength, and further enhances the comprehensive performance of the glass substrate.

[0046] Optionally, the width of each protective element 120 is 3mm to 6mm. Protective elements 120 of this size can provide good protection and reduce the risk of glass substrate warping and deformation.

[0047] like Figure 2 and Figure 3 As shown, the side 112 of the glass sheet 110 is spaced apart from the inner ring wall of the frame structure, that is, the glass sheet 110 and the protective component 120 are spaced apart.

[0048] It should be noted that the glass sheet 110 is provided with conductive vias to connect the conductive layers 220 on both sides of the glass sheet 110, ensuring smooth current transmission. The protective component 120 does not need to have conductive vias. When designing integrated circuits for this type of glass substrate, the positions of the conductive vias are concentrated on the glass sheet 110, and the conductive layers 220 on the protective component 120 can still be used to lay out circuits normally, thereby reducing the impact of the protective component 120 on the space utilization of the circuit board.

[0049] It is understood that in some embodiments, such as Figure 1 As shown, the glass sheet 110 has a rectangular structure. One set of protective members 120 are arranged opposite each other along the length of the glass sheet 110, and another set of protective members 120 are arranged opposite each other along the width of the glass sheet 110 (if the glass sheet 110 is square, one set of protective members 120 is arranged along the length of one of its sides, and the other set of protective members 120 is arranged along the length of a side adjacent to the aforementioned side). Each protective member 120 is a long strip structure and is arranged corresponding to a single side 112 of the glass sheet 110.

[0050] In other embodiments, such as Figure 5 As shown, the protective components 120 in the same group can also be spaced apart along the diagonal direction of the glass sheet 110, that is, each protective component 120 is positioned corresponding to the corner of the glass sheet 110. Therefore, the protective component 120 is configured with an L-shaped structure to better fit the corner of the glass sheet 110 and enhance the protective effect. The two sides of the L-shaped protective component 120 are respectively positioned corresponding to the two adjacent side surfaces 112 of the glass sheet 110 to prevent damage caused by concentrated force at the corners.

[0051] Furthermore, the glass sheet 110 includes two first planes 111 arranged opposite each other along the thickness direction and four side surfaces 112 located between the two first planes 111. The protective member 120 includes intersecting first protective portions 121 and second protective portions 122. The first protective portion 121 is provided corresponding to one of the side surfaces 112, and the second protective portion 122 is provided corresponding to the other side surface 112 adjacent to the aforementioned side surface 112. It should be noted that the protective member 120 is spaced apart from the side surfaces 112 of the glass sheet 110 to provide cushioning space when the glass sheet 110 is subjected to pressure.

[0052] In some embodiments, such as Figure 3 As shown, each of the first planes 111 and side surfaces 112 has a first fillet R1 at the junction to reduce stress concentration at the corners of the glass sheet 110 and reduce the risk of breakage. The radius of the first fillet R1 is optimized according to the glass material and thickness to ensure a smooth transition at the corners. Preferably, 0.3mm≤R1≤0.5mm.

[0053] Furthermore, such as Figure 1 As shown, a second fillet R2 is provided at the junction of adjacent side surfaces 112, which also serves to disperse stress at the corner position. Optionally, 3mm≤R2≤5mm.

[0054] In some embodiments, such as Figure 2 As shown, the glass substrate also includes two protective layers 300. The protective layers 300 are disposed on the side of the additive layer 200 away from the substrate layer 100. The protective layers 300 can be release films or other materials with protective functions, which can cover the additive layer 200 to avoid the problem of pressure loss during pressing caused by the thickness difference between the protective component 120 and the glass sheet 110, and ensure the quality of the pressing and filling.

[0055] In some embodiments, the additive layer 200 includes a connecting layer 210 and a conductive layer 220, with the conductive layer 220 connected to the substrate layer 100 via the connecting layer 210. It is understood that the connecting layer 210 is made of a polymeric material, such as PP, which provides insulation while also exhibiting some thermoplasticity, allowing it to adhere tightly to the substrate layer 100 during hot pressing, ensuring stable adhesion of the conductive layer 220 to the substrate layer 100. The conductive layer 220 is made of conductive metals such as copper or silver, ensuring high current transmission efficiency and reducing resistance loss.

[0056] Furthermore, based on the foregoing, the protective component 120 and the glass sheet 110 are spaced apart on their sides 112. When the additive layer 200 is hot-pressed onto the surface of the substrate layer 100, the PP material can fill the space between the protective component 120 and the glass sheet 110, thereby providing support and fixation for the glass sheet 110. Moreover, the PP layer has a certain elastic deformation capacity, so even if the protective component 120 is impacted, the PP material between the protective component 120 and the glass sheet 110 can form a tight buffer layer, effectively isolating external impacts.

[0057] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A glass substrate, characterized by, include: The substrate layer includes a glass sheet and at least one set of protective members, with two protective members in the same set spaced apart. The glass sheet is disposed between the two protective members in the same set, and the thickness of the protective member is not less than the thickness of the glass sheet. An additive layer is disposed on both sides of the substrate layer along its thickness direction and is connected to the protective component and the glass sheet respectively.

2. The glass substrate of claim 1, wherein, The substrate layer includes multiple sets of the protective components, and each set of the protective components is spaced apart along different directions.

3. The glass substrate of claim 2, wherein, Along the circumference of the glass sheet, the protective components are sequentially connected to form a frame structure, which is arranged around the glass sheet.

4. The glass substrate of claim 3, wherein, The side of the glass sheet is spaced apart from the inner ring wall of the frame structure.

5. The glass substrate of claim 1, wherein, The protective components in the same group are spaced apart along the diagonal direction of the glass sheet, and the protective components are positioned corresponding to the corners of the glass sheet. The protective components have an L-shaped structure.

6. The glass substrate of claim 5, wherein, The glass sheet includes two first planes arranged opposite each other along the thickness direction and four side surfaces located between the two first planes. The protective member includes a first protective part and a second protective part arranged intersectingly, wherein the first protective part is provided corresponding to one of the side surfaces and the second protective part is provided corresponding to an adjacent side surface.

7. The glass substrate of claim 1, wherein, The glass sheet includes two first planes arranged opposite each other along the thickness direction and four side surfaces located between the two first planes. Each first plane and each side surface has a first fillet R1 at the junction, where R1 ≤ 0.3 mm ≤ 0.5 mm.

8. The glass substrate of claim 7, wherein, A second fillet R2 is provided at the junction of adjacent sides, where 3mm≤R2≤5mm.

9. The glass substrate according to claim 1, characterized in that, The glass substrate further includes two protective layers, which are disposed on the side of the additive layer away from the substrate layer.

10. The glass substrate of claim 1, wherein, The additive layer includes a connecting layer and a conductive layer, and the conductive layer is connected to the substrate layer through the connecting layer.

Images