A surface repair method for UTG products

Abstract

The present invention provides a surface repair method for a UTG product, in which a UTG product to be processed is bonded in a first area of ​​an adhesive film material, and a second centrifugal membrane on the other side corresponding to the first area is not torn off, but is bonded to a glass substrate through a second adhesive layer in the second area. That is to say, the area on the other side corresponding to the first area, i.e., the area other than the second area, is not bonded to the glass substrate. After the surface repair of the UTG product is completed, a plurality of independent laminated structures can be directly obtained by cutting based on the first area. After the cutting is completed, the laminated structure can be directly taken out without separating the glass substrate and the adhesive layer as in a traditional process. Thereafter, the UTG product and the first adhesive layer are separated to obtain a UTG product with one side repaired. This can greatly improve the product yield and production capacity, and meet mass production requirements while ensuring the product yield.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor products, and more particularly to a surface repair method for UTG products. Background Art

[0002] Ultra-thin glass (UTG) mainly refers to white glass sheets with a thickness of less than 30um, which are mainly used in optoelectronic industries such as folding screens and displays.

[0003] Currently, UTG products in the industry are generally made of ultra-thin glass that is thinned to the target thickness (30um-50um) through an etching process. Since etching will amplify scratches on the surface of the product, those micro scratches on the surface of the product that are difficult to detect after etching will be magnified into obvious scratches, or even deep scratches, affecting the appearance of the product.

[0004] Due to the thickness limitation of ultra-thin glass itself, the product itself is easy to bend and deform, and problems such as breakage are very likely to occur during the scratch repair process.

[0005] Therefore, how to provide a new surface repair technology for UTG products is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0006] In view of this, in order to solve the above problems, the present invention provides a surface repair method for UTG products, and the technical solution is as follows:

[0007] A surface repair method for a UTG product, comprising:

[0008] Providing an adhesive film material, the adhesive film layer comprising a first centrifugal membrane, a first adhesive layer, a substrate, a second adhesive layer, and a second centrifugal membrane stacked in sequence in a first direction, wherein the first direction is perpendicular to the plane of the adhesive film material and extends from the first centrifugal membrane to the first adhesive layer;

[0009] Cutting the adhesive film layer to form a plurality of independent first regions on the first centrifugal film and a second region on the second centrifugal film, wherein an orthographic projection of the first region and an orthographic projection of the second region are spaced apart in the first direction;

[0010] tearing off the second centrifugal film on the second area, and laminating the adhesive film material on the glass substrate based on the second adhesive layer in the second area;

[0011] tearing off the first centrifugal membrane on the first area, and laminating the UTG product to be processed in the first area based on the first adhesive layer in the first area, with one UTG product to be processed laminating in each first area;

[0012] Performing repair treatment on the surface of the UTG product;

[0013] After the repair is completed, a cutting process is performed based on the first area to obtain a plurality of independent laminated structures, wherein the laminated structure comprises the second centrifugal membrane, the second adhesive layer, the substrate, the first adhesive layer and the UTG product with the surface repaired;

[0014] The UTG product with the surface repaired is separated from the first adhesive layer to obtain a UTG product with one side repaired.

[0015] Preferably, in the above surface repair method, the substrate is a PET substrate.

[0016] Preferably, in the above surface repair method, the first adhesive layer is a UV-dissociable adhesive layer.

[0017] Preferably, in the above surface repair method, the size of the first area is larger than the size of the UTG product to be treated.

[0018] Preferably, in the above surface repair method, the shape of the first area is rectangular, and the shape of the UTG product to be treated is rectangular;

[0019] The length of the first region is X1, and the length of the UTG product to be processed is X2, then 1.5 mm ≤ X1 - X2 ≤ 2.5 mm;

[0020] The width of the first area is Y1, and the width of the UTG product to be processed is Y2, then 1.5 mm ≤ Y1 - Y2 ≤ 2.5 mm.

[0021] Preferably, in the above surface repair method, the repairing treatment of the surface of the UTG product includes:

[0022] The surface of the UTG product is subjected to physical grinding and polishing treatment.

[0023] Preferably, in the above surface repair method, after the surface repair of the UTG product is completed, the surface repair method further comprises:

[0024] Carry out cleaning.

[0025] Preferably, in the above surface repair method, after the repair is completed, cutting is performed based on the first area to obtain a plurality of independent laminated structures, including:

[0026] After the repair is completed, a laser cutting machine or manual cutting method is used to cut the first area to obtain multiple independent laminated structures.

[0027] Preferably, in the above surface repair method, when the first adhesive layer is a UV dissociative adhesive layer, separating the surface-repaired UTG product from the first adhesive layer to obtain a UTG product with one side repaired comprises:

[0028] UV light is irradiated from one side of the UTG product with the surface repaired to make the first adhesive layer lose its stickiness, and then the UTG product with the surface repaired is separated from the first adhesive layer to obtain a UTG product with one side repaired.

[0029] Preferably, in the above surface repair method, the second region is an integrated second region.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention provides a surface repair method for a UTG product, comprising: providing an adhesive film material, wherein the adhesive film layer comprises a first centrifugal film, a first adhesive layer, a substrate, a second adhesive layer, and a second centrifugal film stacked in sequence in a first direction, wherein the first direction is perpendicular to the plane where the adhesive film material is located, and the first centrifugal film points to the first adhesive layer; cutting the adhesive film layer to form a plurality of independent first areas on the first centrifugal film, and forming a second area on the second centrifugal film, wherein in the first direction, there is a gap between the orthographic projection of the first area and the orthographic projection of the second area; tearing off the second centrifugal film on the second area, and based on the second area in the second area The adhesive layer adheres the adhesive film material to the glass substrate; the first centrifugal membrane on the first area is torn off, and the UTG product to be processed is adhered in the first area based on the first adhesive layer in the first area, and one UTG product to be processed is adhered to one first area; the surface of the UTG product is repaired; after the repair is completed, a cutting process is performed based on the first area to obtain a plurality of independent laminated structures, and the laminated structure has the second centrifugal membrane, the second adhesive layer, the substrate, the first adhesive layer and the UTG product with the surface repaired; the UTG product with the surface repaired is separated from the first adhesive layer to obtain a UTG product with one side repaired.

[0032] The surface repair method of the UTG product is to laminate the UTG product to be processed in the first area of ​​the adhesive film material, and the second centrifugal membrane on the other side corresponding to the first area laminated with the UTG product to be processed is not torn off, but is laminated to the glass substrate through the second adhesive layer in the second area. That is to say, the area on the other side corresponding to the first area, that is, the area other than the second area is not laminated to the glass substrate. After the surface repair of the UTG product is completed, multiple independent laminated structures can be directly obtained by cutting based on the first area. After the cutting is completed, the laminated structure can be directly taken out without the need to separate the glass substrate and the adhesive layer as in the traditional process. After that, the UTG product is separated from the first adhesive layer to obtain a UTG product with one side repaired. This can greatly improve the product yield and production capacity, and achieve mass production requirements while ensuring the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0034] Figure 1 A schematic flow chart of a surface repair method for a UTG product provided in an embodiment of the present invention;

[0035] Figure 2-Figure 8 for Figure 1 A schematic diagram of a portion of the structure corresponding to the surface repair method shown;

[0036] Figure 9 A schematic flow chart of another surface repair method for a UTG product provided in an embodiment of the present invention;

[0037] Figure 10 for Figure 1 A schematic diagram of a portion of the structure corresponding to the surface repair method shown;

[0038] Figure 11 A schematic flow chart of another surface repair method for a UTG product provided in an embodiment of the present invention;

[0039] Figure 12 A schematic flow chart of another surface repair method for a UTG product provided in an embodiment of the present invention;

[0040] Figure 13 A schematic flow chart of a surface repair method for another UTG product provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] Based on the content of the background technology, during the invention process of the present invention, the inventors found that there are currently two mainstream technologies for surface repair of UTG products: direct polishing or backboard polishing:

[0043] Direct polishing technology involves directly polishing the surface of products with a thickness of approximately 50 μm through physical grinding. However, the inventors discovered that when the product is extremely thin and easily deformed, physical grinding can easily cause fragmentation, with a fragmentation rate of over 95% and poor scratch repair results.

[0044] Based on the backboard scanning technology, the UTG product is flatly attached to a thick glass substrate through UV high-temperature separation glue, the product is fixed to the product surface through UV curing, and then the product surface is physically ground and polished to repair surface defects such as surface scratches; however, the inventors found that during the bonding process, the thickness uniformity of the cured glue layer is poor, the thickness error is more than ±20%, and the surface glue overflow is serious, which affects the physical grinding and polishing effect. In addition, there are problems such as easy breakage in the separation process of the UTG product and the UV glue after the scanning treatment, which greatly restricts the feasibility of backboard scanning.

[0045] In addition, the backlight scanning with UV glue can only be performed one piece at a time, which is inefficient and has low production capacity, and cannot meet the needs of mass production.

[0046] Based on this, an embodiment of the present invention provides a novel surface repair method for UTG products, which solves the technical problems existing in the prior art. The embodiment of the present invention is described in detail below.

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] refer to Figure 1 , Figure 1 A schematic flow chart of a surface repair method for a UTG product provided in an embodiment of the present invention, wherein the surface repair method for a UTG product comprises:

[0049] S101: If Figure 2As shown, a bonding film material 10 is provided, which includes a first centrifugal membrane 11, a first adhesive layer 12, a substrate 13, a second adhesive layer 14 and a second centrifugal membrane 15 stacked in sequence in a first direction X. The first direction X is perpendicular to the plane where the bonding film material 10 is located, and is directed from the first centrifugal membrane 11 to the first adhesive layer 12.

[0050] Specifically, in this step, the adhesive film 10 includes but is not limited to a UV anti-viscosity film. The size of the adhesive film 10 is basically consistent with the size of the glass substrate. Its size determines its scanning capacity. The larger the size of the glass substrate, the more UTG products to be processed will be bonded to a single glass substrate. The size of the UTG product to be processed is generally 70mm*160mm, the size of the glass substrate is generally 500mm*600mm or more, and the thickness of the glass substrate is generally but not limited to 1.1mm or more.

[0051] Both sides of the adhesive film 10 are adhesive. Figure 2 The figure shows a laminated structure of a first centrifugal membrane 11, a first adhesive layer 12, a substrate 13, a second adhesive layer 14 and a second centrifugal membrane 15. Since the first adhesive layer 12 is subsequently bonded to the UTG product to be processed, UV dissociation adhesive is used as the first adhesive layer 12 in the embodiment of the present invention so that it has the characteristic of UV dissociation; and the second adhesive layer 14 is bonded to the glass substrate, so the second adhesive layer 14 can be another adhesive layer different from the UV dissociation adhesive, and can actually be a UV dissociation adhesive. In the embodiment of the present invention, there is no limitation on the second adhesive layer 14, and it is only necessary to ensure that the second adhesive layer and the glass substrate have a strong bonding force.

[0052] It should be noted that the substrate 13 in the adhesive film 10 includes but is not limited to a PET substrate.

[0053] S102: Figure 3 、 Figure 4 and Figure 5 As shown, the adhesive film material 10 is cut to form a plurality of independent first regions 16 on the first centrifugal membrane 11 and a second region 17 on the second centrifugal membrane 15. In the first direction X, there is a gap between the orthographic projection of the first region 16 and the orthographic projection of the second region 17.

[0054] Specifically, in this step Figure 3 It is a top view of one side of the first centrifugal membrane 11, Figure 4 It is a top view of one side of the second centrifugal membrane 15, Figure 5 for Figure 3The cross-sectional schematic diagram along the AA' direction includes but is not limited to using a laser cutting machine to cut the first centrifugal membrane 11 to form a plurality of independent first areas 16. The cut shape of the first area 16 is slightly larger than the size of the UTG product to be processed. For example, the shape of the first area 16 is a rectangle, and the shape of the UTG product to be processed is a rectangle; the length of the first area 16 is X1, and the length of the UTG product to be processed is X2, then 1.5mm≤X1-X2≤2.5mm; the width of the first area 16 is Y1, and the width of the UTG product to be processed is Y2, then 1.5mm≤Y1-Y2≤2.5mm.

[0055] That is to say, the cut shape of the first area 16 is slightly larger than the size of the UTG product to be processed, and generally the single-side size expands by about 2 mm. For example, if the size of the UTG product to be processed is 70 mm*160 mm, the size of the cut shape of the first area 16 is 74 mm*164 mm; however, the size of the cut shape of the first area 16 cannot be too larger than the size of the UTG product to be processed. If the expanded size is too large, there is a risk that the UTG product to be processed will be swept up during the scanning process; similarly, the expanded size of the cut shape of the first area 16 cannot be too small. If the expanded size is too small, it will be detrimental to the subsequent cutting process after the scanning is completed. Based on this, in an embodiment of the present invention, the first centrifugal membrane 11 is cut according to the scanning arrangement and the setting of the expanded size of the UTG product to be processed.

[0056] At the same time, the second centrifugal membrane 15 is cut to form a second area 17 for bonding to the glass substrate, while ensuring that there is a gap between the orthographic projection of the first area 16 and the orthographic projection of the second area 17 in the first direction X.

[0057] S103: If Figure 6 As shown, the second centrifugal film 15 on the second area 17 is torn off, and the adhesive film material 10 is attached to the glass substrate 18 based on the second adhesive layer 14 in the second area 17 .

[0058] Specifically, in this step, the second centrifugal film 15 on the second area 17 is torn off to expose the second adhesive layer 14 in the second area 17. The second centrifugal film 15 outside the second area 17 is not torn off, and the second adhesive layer 14 outside the second area 17 is not exposed. Based on the second adhesive layer 14 in the second area 17, the adhesive film material 10 is bonded to the glass substrate 18. That is, the adhesive film material 10 in other areas except the second area 17 is not bonded to the glass substrate 18, and only the adhesive film material 10 in the second area 17 is bonded to the glass substrate 18. This bonding method includes but is not limited to a roller bonding method.

[0059] Since only a part of the adhesive film 10 attached to the glass substrate 18 is attached to the glass substrate 18, the second area 17 is set as follows in the embodiment of the present invention. Figure 4 The integrated area shown only needs to ensure that there is a gap between the orthographic projection of the first area 16 and the orthographic projection of the second area 17 in the first direction X, so as to increase the area of ​​the second area 17 as much as possible, increase the bonding area between the adhesive film layer 10 and the glass substrate 18, and further improve the bonding strength between the adhesive film layer 10 and the glass substrate 18.

[0060] S104: Figure 7 As shown, the first centrifugal membrane 11 on the first area 16 is torn off, and the UTG product 19 to be processed is adhered to the first area 16 based on the first adhesive layer 12 in the first area 11 , with one UTG product 19 to be processed adhered to each first area 16 .

[0061] Specifically, in this step, the other side of the adhesive film 10 corresponding to the first area 16 of the UTG product 19 to be processed is not bonded to the glass substrate 18. Figure 8 As shown, the first area 16 forms a laminated structure M of the UTG product 19 to be processed, the first adhesive layer 12, the substrate 13, the second adhesive layer 14, the second centrifugal membrane 15 and the glass substrate 18, and the partial area outside the first area 16 forms a laminated structure N of the first centrifugal membrane 11, the first adhesive layer 12, the substrate 13, the second adhesive layer 14 and the glass substrate 18.

[0062] S105: Repairing the surface of the UTG product 19.

[0063] Specifically, in the embodiments of the present invention, refer to Figure 9 , Figure 9 A schematic flow chart of another surface repair method for a UTG product provided in an embodiment of the present invention, wherein a specific implementation method of repairing the surface of the UTG product in step S105 may be:

[0064] S1051: Performing physical grinding and polishing treatment on the surface of the UTG product.

[0065] That is to say, surface scratches and other defects of UTG products are repaired by physical grinding and polishing. Since the UTG product to be processed has a thick glass substrate as a carrier, the surface grinding treatment can be performed like a normal thick glass substrate.

[0066] S106: If Figure 10As shown, after the repair is completed, a plurality of independent laminated structures Q are obtained by cutting based on the first area 16, and the laminated structure Q has the second centrifugal membrane 15, the second adhesive layer 14, the substrate 13, the first adhesive layer 12 and the UTG product 19 with the surface repaired.

[0067] Specifically, refer to Figure 11 , Figure 11 A flow chart of another surface repair method for a UTG product provided in an embodiment of the present invention, wherein in step S106, after the repair is completed, a cutting process is performed based on the first area 16 to obtain a plurality of independent laminated structures Q, wherein the laminated structure Q comprises the second centrifugal membrane 15, the second adhesive layer 14, the substrate 13, the first adhesive layer 12 and the UTG product 19 whose surface has been repaired. A specific implementation method may be:

[0068] S1061: After the repair is completed, a laser cutting machine or manual cutting method is used to cut the first area 16 to obtain multiple independent laminated structures Q. The laminated structure Q has the second centrifugal membrane 15, the second adhesive layer 14, the substrate 13, the first adhesive layer 12 and the UTG product 19 with the surface repaired.

[0069] S107: Separating the UTG product 19 with the repaired surface from the first adhesive layer 12 to obtain a UTG product with one surface repaired.

[0070] Specifically, in this step, refer to Figure 12 , Figure 12 A schematic flow chart of another surface repair method for a UTG product provided in an embodiment of the present invention is provided. In step S107, the UTG product 19 after surface repair is separated from the first adhesive layer 12 to obtain a UTG product with one surface repaired. A specific implementation method may be:

[0071] S1071: When the first adhesive layer 12 is a UV dissociation adhesive layer, UV light is irradiated from one side of the UTG product whose surface has been repaired to make the first adhesive layer 12 lose its stickiness, and then the UTG product 19 whose surface has been repaired is separated from the first adhesive layer 12 to obtain a UTG product with one side repaired.

[0072] It should be noted that why step S106 and step S107 are performed in the embodiment of the present invention instead of directly using UV lamp irradiation treatment to make the first adhesive layer 12 of the UV dissociation adhesive layer lose its viscosity and take out the UTG product with the surface repaired? This is mainly because the first adhesive layer 12 of the UV dissociation adhesive layer is difficult to completely lose its viscosity due to UV lamp irradiation, but it will only reduce the viscosity and need to be torn apart. If a small piece of UTG product 19 is directly torn off on a large piece, this process can easily cause it to break into pieces. Therefore, in the embodiment of the present invention, step S106 and step S107 are continued to be performed based on multiple independent small-sized stacked structures Q, and then the UTG product 19 is separated, thereby reducing the risk of fragmentation.

[0073] Optionally, in another embodiment of the present invention, referring to Figure 13 , Figure 13 A schematic flow chart of a surface repair method for another UTG product provided in an embodiment of the present invention.

[0074] After the surface repair of the UTG product is completed, the surface repair method further includes:

[0075] S108: Perform cleaning process.

[0076] From the above description, it can be seen that the surface repair method of the UTG product is to bond the UTG product 19 to be processed in the first area 16 of the adhesive film material 10, and the second centrifugal membrane 15 on the other side corresponding to the first area 16 bonded with the UTG product 19 to be processed is not torn off, but is bonded to the glass substrate 18 through the second adhesive layer 14 in the second area 17. That is to say, the area on the other side corresponding to the first area 16, that is, the area other than the second area 17 is not bonded to the glass substrate 18. Then, after the surface repair of the UTG product 19 is completed, a plurality of independent laminated structures Q can be directly obtained by cutting based on the first area 16. After the cutting is completed, the laminated structure Q can be directly taken out without the need to perform a separation process of the glass substrate and the adhesive layer as in the traditional process. After that, the UTG product 19 is separated from the first adhesive layer QW to obtain a UTG product with one side repaired. This can greatly improve the product yield and production capacity, and achieve mass production requirements while ensuring the product yield.

[0077] Similarly, if the other side of the UTG product needs to be polished, just follow the above process steps to polish the other side.

[0078] The surface repair method of a UTG product provided by the present invention is introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

[0079] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0080] It should also be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that the process, method, article, or apparatus comprising a series of elements inherent to the elements, or also including elements inherent to these processes, methods, articles, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0081] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A surface repair method for UTG products, characterized in that: The surface repair method comprises: Providing an adhesive film material, the adhesive film material comprising a first centrifugal membrane, a first adhesive layer, a substrate, a second adhesive layer, and a second centrifugal membrane stacked in sequence in a first direction, wherein the first direction is perpendicular to the plane of the adhesive film material and points from the first centrifugal membrane to the first adhesive layer; Cutting the adhesive film material to form a plurality of independent first regions on the first centrifugal film and a second region on the second centrifugal film, wherein an orthographic projection of the first region and an orthographic projection of the second region are spaced apart in the first direction; tearing off the second centrifugal film on the second area, and laminating the adhesive film material on the glass substrate based on the second adhesive layer in the second area; tearing off the first centrifugal membrane on the first area, and laminating the UTG product to be processed in the first area based on the first adhesive layer in the first area, with one UTG product to be processed laminating in each first area; Performing repair treatment on the surface of the UTG product; After the repair is completed, a cutting process is performed based on the first area to obtain a plurality of independent laminated structures, wherein the laminated structure comprises the second centrifugal membrane, the second adhesive layer, the substrate, the first adhesive layer and the UTG product with the surface repaired; The UTG product with the surface repaired is separated from the first adhesive layer to obtain a UTG product with one side repaired.

2. The surface repair method according to claim 1, characterized in that: The substrate is a PET substrate.

3. The surface repair method according to claim 1, characterized in that: The first adhesive layer is a UV-dissociable adhesive layer.

4. The surface repair method according to claim 1, characterized in that: The size of the first region is larger than the size of the UTG product to be processed.

5. The surface repair method according to claim 4, characterized in that: The shape of the first area is a rectangle, and the shape of the UTG product to be processed is a rectangle; The length of the first region is X1, and the length of the UTG product to be processed is X2, then 1.5 mm ≤ X1 - X2 ≤ 2.5 mm; The width of the first area is Y1, and the width of the UTG product to be processed is Y2, then 1.5 mm ≤ Y1 - Y2 ≤ 2.5 mm.

6. The surface repair method according to claim 1, characterized in that: The repairing treatment of the surface of the UTG product comprises: The surface of the UTG product is subjected to physical grinding and polishing treatment.

7. The surface repair method according to claim 1, characterized in that: After the surface repair of the UTG product is completed, the surface repair method further includes: Carry out cleaning.

8. The surface repair method according to claim 1, characterized in that: After the repair is completed, a cutting process is performed based on the first area to obtain multiple independent laminated structures, including: After the repair is completed, a laser cutting machine or manual cutting method is used to cut the first area to obtain multiple independent laminated structures.

9. The surface repair method according to claim 1, characterized in that: When the first adhesive layer is a UV dissociation adhesive layer, the UTG product with the surface repaired is separated from the first adhesive layer to obtain a UTG product with one side repaired, including: UV light is irradiated from one side of the UTG product with the surface repaired to make the first adhesive layer lose its stickiness, and then the UTG product with the surface repaired is separated from the first adhesive layer to obtain a UTG product with one side repaired.

10. The surface repair method according to claim 1, characterized in that: The second region is an integrated second region.

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