Mask structure and car window glass

Abstract

This invention relates to a mask structure and a car window glass. The mask structure includes: a film adhered to the glass surface, the film having a perforated portion, wherein the area corresponding to the perforated portion and the area located on the outer periphery of the film are respectively a coated area and a non-coated area; and a cover plate, which is pressed onto the film, with the cover plate and the film near the non-coated area forming an overlapping area along the circumference of the film, so as to cover the non-coated area through the cooperation of the cover plate and the film. This invention, through a mask structure combining a cover plate and a film, simultaneously solves the problems of coating boundaries when using only a cover plate for masking, and air defects and easy peeling when using only a film application method. The mask structure of this invention can achieve a good masking effect during the coating process, effectively improving the production yield.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more particularly to a mask structure and a vehicle window glass. Background Technology

[0002] With the continuous development of automotive cockpit comfort and intelligent connectivity, the use of automotive surface functional films is becoming increasingly common. Common surface functional films include silver-based heat insulation films, Low-E films, and one-way vision films. However, at present, the production process of automotive coating is often limited by the principle and process of coating vacuum equipment, which requires coating the entire glass surface. Some areas that do not need to be coated (such as camera window areas) need to be masked or treated by laser removal later.

[0003] Since intelligent vehicles are the future trend of the automotive industry, they are equipped with information acquisition devices such as visible light cameras, infrared cameras, and LiDAR (a system that integrates laser, global positioning system and inertial navigation system to obtain point cloud data and generate accurate digital 3D models). Furthermore, heat insulation film and Low-E film cannot be coated on the corresponding information window areas of the car glass. Therefore, the masking or film removal process for the information window areas is particularly important.

[0004] In the automotive industry, existing masking methods mainly include:

[0005] 1. Using stainless steel cover plates to shield areas of glass that do not require coating. While this method is suitable for mass production, it often results in a coating boundary at the junction of the shielded and unshielded areas. (Because the cover plate cannot fully adhere to the glass surface, the coating nanoparticles move towards the shielded area during deposition, creating a transition area between the coated and uncoated areas. This transition area is the coating boundary, also known as the coating boundary effect or boundary ghosting.) Furthermore, this cover plate method is difficult to position using automated robotic arms, so it can only be used to shield glass edges (glass edges are easier to position manually to ensure accuracy).

[0006] II. Commonly used film application methods (such as PE electrostatic film) are used to mask areas of glass that do not require coating. PE electrostatic film is often used in fields such as mobile phone screen protectors. This method uses electrostatic adsorption to tightly bond the electrostatic film to the glass surface, eliminating any residual air between them. However, when this method is actually applied to automotive glass masking, the following problems arise: PE electrostatic film is very lightweight, and there is a risk of it being pulled off during the rapid vacuuming and degassing process in the coating chamber. Once the PE electrostatic film falls off, it is very likely to fall into the coating chamber and become entangled on the transport rollers, thus changing the glass transport direction and leading to significant losses such as glass breakage and cracking. In addition, manually applying large areas of PE electrostatic film to the glass surface is also quite difficult (the larger the area, the more likely it is to cause defects due to incomplete air removal).

[0007] There is currently no effective solution to the problem of coating boundaries in the masking process of functional areas on automotive glass, which is difficult to apply and easy to peel off.

[0008] Therefore, based on years of experience and practice in related industries, the inventor proposes a mask structure and a car window glass to overcome the shortcomings of the prior art. Summary of the Invention

[0009] The purpose of this invention is to provide a mask structure and a car window glass. By combining a cover plate and a film, the mask structure solves the problems of coating boundary when using only a cover plate for masking, and air defects and easy peeling when using only film application. It can achieve a good masking effect during the coating process and effectively improve the production yield.

[0010] The objective of this invention can be achieved through the following methods:

[0011] This invention provides a mask structure, the mask structure comprising:

[0012] A film is attached to the surface of glass, the film having a cutout portion, the area corresponding to the cutout portion and the area located on the outer periphery of the film being a coated area and a non-coated area, respectively.

[0013] A cover plate is pressed onto the diaphragm. The cover plate and the diaphragm have an overlapping area along the circumference of the diaphragm near the non-coated area, so as to cover the non-coated area by the cooperation of the cover plate and the diaphragm.

[0014] In a preferred embodiment of the present invention, at least a portion of the cover plate is located in the hollow portion, and another portion of the cover plate and the diaphragm form the overlapping area along the outer periphery of the hollow portion.

[0015] In a preferred embodiment of the present invention, the perforated portion is located in the middle of the diaphragm, and the annular region on the diaphragm near the perforated portion overlaps with the annular region on the cover plate near its edge to form an annular overlapping region.

[0016] The membrane located on the outer periphery of the overlapping region forms an annular non-overlapping region.

[0017] In a preferred embodiment of the present invention, at least a portion of the cover plate is located in the region of the outer periphery of the diaphragm, and another portion of the cover plate forms the overlapping region with the edge of the diaphragm along the circumferential direction of the diaphragm.

[0018] In a preferred embodiment of the present invention, the cover plate is provided with a hollow position that cooperates with the diaphragm, and the annular area on the diaphragm near its edge overlaps with the annular area on the cover plate near the hollow position to form an annular overlapping area.

[0019] The membrane located around the overlapping area forms a ring-shaped non-overlapping area.

[0020] In a preferred embodiment of the present invention, the outer edge of the cover plate has a groove for engaging the edge of the glass.

[0021] In a preferred embodiment of the present invention, the surface of the diaphragm facing the cover plate has a frosted portion, which is used to increase the contact friction between the diaphragm and the cover plate.

[0022] In a preferred embodiment of the present invention, the abrasive portion is located on the surface of the diaphragm and overlaps with the cover plate.

[0023] In a preferred embodiment of the present invention, the abrasive portion includes a plurality of recesses, which are arranged in an array on the surface of the diaphragm.

[0024] In a preferred embodiment of the present invention, the recess includes a groove and an edge, the edge being disposed along the edge of the groove and protruding from the surface of the diaphragm.

[0025] In a preferred embodiment of the present invention, the ratio of the depth of the groove to the thickness of the diaphragm is greater than 0.2 and less than 0.5.

[0026] In a preferred embodiment of the present invention, the thickness of the diaphragm is greater than or equal to 0.06 mm and less than or equal to 0.15 mm.

[0027] In a preferred embodiment of the present invention, the concave block is square, and the width of the edge is greater than or equal to 100 μm and less than or equal to 150 μm, and the width of the groove is greater than or equal to 300 μm and less than or equal to 800 μm.

[0028] In a preferred embodiment of the present invention, the ratio of the width of the groove to the width of the edge is greater than 3 and less than 8.

[0029] In a preferred embodiment of the present invention, the shape of the cover plate is the same as or similar to the shape of the hollow portion, and the surface area of ​​the cover plate is larger than the area of ​​the hollow portion and smaller than the area of ​​the membrane.

[0030] In a preferred embodiment of the present invention, the width of the overlapping area is greater than or equal to 2 cm and less than or equal to 4 cm.

[0031] In a preferred embodiment of the present invention, the ratio of the distance between the edge of the diaphragm to the edge of the adjacent hollow portion in the first direction to the distance between the two opposite edges of the diaphragm in the first direction is equal to the ratio of the distance between the edge of the diaphragm to the edge of the adjacent hollow portion in the second direction to the distance between the two opposite edges of the diaphragm in the second direction.

[0032] The first direction and the second direction are different directions.

[0033] In a preferred embodiment of the present invention, the distance between the two opposite edges of the diaphragm is greater than or equal to 4 cm and less than or equal to 8 cm.

[0034] In a preferred embodiment of the present invention, a positioning line is provided on the diaphragm and at the edge of the overlapping area, the positioning line being used to position the relative position of the diaphragm and the cover plate.

[0035] The present invention provides a vehicle window glass, wherein the surface of the vehicle window glass is provided with the above-mentioned mask structure to block at least a portion of the vehicle window glass.

[0036] As described above, the features and advantages of the mask structure and the car window glass of the present invention are:

[0037] A cutout is provided on the diaphragm, and a cover plate is pressed onto the diaphragm. Depending on the actual situation, the area corresponding to the cutout and the area on the outer periphery of the diaphragm can be determined; one is the coating area, and the other is the non-coating area. Depending on the coating area, the cover plate and the diaphragm overlap, forming an overlapping area along the circumference of the diaphragm near the non-coating area. This allows the non-coating area to be completely masked by the cooperation of the cover plate and the diaphragm. Because the side of this mask structure near the coating area is set as the diaphragm, the problem of a coating boundary at the junction of the coating and non-coating areas, which is common with cover plates, is avoided. Furthermore, the cooperation of the cover plate and the diaphragm effectively reduces the area of ​​the diaphragm used, and the pressure of the cover plate on the diaphragm ensures that the diaphragm fully adheres to the glass surface, avoiding problems such as air defects and easy peeling. The diaphragm has better stability, achieving a good masking effect during the coating process and effectively improving the production yield. Attached Figure Description

[0038] The accompanying drawings are intended only to illustrate and explain the present invention and do not limit the scope of the invention.

[0039] in:

[0040] Figure 1 This is one of the front views of the mask structure in one embodiment of the present invention.

[0041] Figure 2 This is a front view of the diaphragm in a mask structure according to an embodiment of the present invention.

[0042] Figure 3 This is a front view of the cover plate in a mask structure according to an embodiment of the present invention.

[0043] Figure 4 This is a schematic diagram of the frosted surface of the cover plate in a mask structure according to one embodiment of the present invention.

[0044] Figure 5 This is a schematic diagram of the grid structure on the cover plate in a mask structure according to one embodiment of the present invention.

[0045] Figure 6 This is one of the schematic diagrams showing the dimensional relationship of the cover plate in a mask structure according to an embodiment of the present invention.

[0046] Figure 7 This is a second schematic diagram showing the dimensional relationship of the cover plate in a mask structure according to an embodiment of the present invention.

[0047] Figure 8 This is the third schematic diagram showing the dimensional relationship of the cover plate in the mask structure according to one embodiment of the present invention.

[0048] Figure 9 This is a second front view of the mask structure in one embodiment of the present invention.

[0049] 1. Cover plate; 2. Diaphragm;

[0050] 201. Hollowed-out section; 202. Frosted section;

[0051] 203, concave block; 2031, edge;

[0052] 2032. Groove; 3. Overlapping area;

[0053] 4. Non-overlapping regions. Detailed Implementation

[0054] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0055] Implementation Method 1

[0056] like Figures 1 to 3 As shown, the present invention provides a mask structure, which includes a film 2 and a cover plate 1 attached to the glass surface. The film 2 is provided with a cutout portion 201. The area corresponding to the cutout portion 201 and the area located on the outer periphery of the film 2 are respectively a coated area and a non-coated area. The cover plate 1 is pressed onto the film 2. The cover plate 1 and the position of the film 2 near the non-coated area form an overlapping area 3 along the circumference of the film 2, so as to cover the non-coated area by the cooperation of the cover plate 1 and the film 2.

[0057] In this invention, a perforated portion 201 is provided on the diaphragm 2, and a cover plate 1 is pressed onto the diaphragm 2. Depending on the actual situation, the area corresponding to the perforated portion 201 and the area located on the outer periphery of the diaphragm 2 can be determined; one is the coating area, and the other is the non-coating area. Depending on the coating area, the cover plate 1 and the diaphragm 2 are positioned to overlap, that is, an overlapping area 3 is formed along the circumference of the diaphragm 2 near the non-coating area on the cover plate 1 and the diaphragm 2. This allows the non-coating area to be completely covered by the cooperation of the cover plate 1 and the diaphragm 2. Because this mask structure has a perforated portion 201 on the side near the coating area... Using a diaphragm 2 avoids the problem of a coating boundary at the junction of the coating and non-coating areas that occurs when using a cover plate 1 for masking. In addition, by using a cover plate 1 in conjunction with a diaphragm 2, the area of ​​the diaphragm 2 can be effectively reduced. By pressing the diaphragm 2 with the cover plate 1, the diaphragm 2 can be fully adhered to the glass surface, avoiding the problems of air defects (i.e., air that is not completely removed between the diaphragm 2 and the glass surface) and the problem of the diaphragm 2 being easily peeled off. The diaphragm 2 has better stability, so as to achieve a good masking effect during the coating process and effectively improve the production yield.

[0058] Because tiny air pockets can easily form between the diaphragm 2 and the glass surface during the bonding process, these air pockets can affect the positioning of the diaphragm 2. In more serious cases, they can damage the adhesion between the diaphragm 2 and the glass surface during the vacuuming process, or even cause the diaphragm 2 to peel off from the glass surface. However, the mask structure of this invention, with a cover plate 1 in the middle and a diaphragm 2 on the outer periphery of the cover plate 1, and an overlapping area 3 between the cover plate 1 and the diaphragm 2, allows the air between the diaphragm 2 and the glass surface to be discharged both from the outside of the diaphragm 2 and through the perforated part 201 when the diaphragm 2 is bonded to the glass surface. This ensures better adhesion between the diaphragm 2 and the glass surface, reduces the generation of surface air pockets, and makes it easier to position the edge of the diaphragm 2 (which can be achieved using a robotic arm combined with optical positioning).

[0059] In an optional embodiment of the present invention, such as Figure 1 , Figure 2 As shown, at least a portion of the cover plate 1 is located in the hollow portion 201, and another portion of the cover plate 1 and the diaphragm 2 form the aforementioned overlapping area 3 along the outer periphery of the hollow portion 201.

[0060] Furthermore, such as Figure 1 , Figure 2 As shown, the cutout portion 201 is located in the middle of the diaphragm 2. The annular region on the diaphragm 2 near the cutout portion 201 overlaps with the annular region on the cover plate 1 near its edge, forming an annular overlapping region 3. The diaphragm 2 located on the outer periphery of the overlapping region 3 forms an annular non-overlapping region 4. This non-overlapping region 4 only blocks the glass surface through the diaphragm 2, which solves the problem of coating boundaries that exist when only the cover plate 1 is used for blocking, thus improving product quality. Using the mask structure of the present invention, the coating boundary between the coated area and the non-coated area on the glass surface can be greatly reduced, wherein the width of the coating boundary can be controlled within the range of less than 0.5 mm.

[0061] The above embodiments are applicable to coating the surface of glass with a silver-based heat insulation film, that is, coating the non-signal window area of ​​the glass with a silver-based heat insulation film, while the signal window area is not coated with a silver-based heat insulation film.

[0062] In another optional embodiment of the invention, for cases where coating is required in the signal window area, such as... Figure 9 As shown, at least a portion of the cover plate 1 can be located in the area around the outer periphery of the diaphragm 2, and another portion of the cover plate 1 can form the aforementioned overlapping area 3 along the circumferential direction of the diaphragm 2 and at the edge of the diaphragm 2.

[0063] Furthermore, such as Figure 9As shown, the cover plate 1 has a cutout position that matches the diaphragm 2. The annular area on the diaphragm 2 near its edge overlaps with the annular area on the cover plate 1 near the cutout position to form an annular overlapping area 3. The diaphragm located on the inner periphery of the overlapping area 3 forms an annular non-overlapping area.

[0064] Furthermore, the outer edge of the cover plate 1 has a groove (not shown) for engaging the edge of the glass, thereby positioning the cover plate 1 and the glass.

[0065] The above embodiments are applicable to coating the surface of glass with an AR film, that is, coating the signal window area on the glass with an AR film, while not coating the non-signal window area with an AR film.

[0066] In an optional embodiment of the present invention, such as Figure 4 , Figure 5 As shown, the surface of the diaphragm 2 facing the cover plate 1 has a frosted portion 202. The frosted portion 202 increases the contact friction between the diaphragm 2 and the cover plate 1, ensuring the stability of their relative positions and preventing relative displacement during the coating process. Specifically, the frosted portion 202 is located on the surface of the diaphragm 2 and overlaps with the cover plate 1. The frosted portion 202 can be formed on the surface of the diaphragm 2 using a roll-to-roll embossing process.

[0067] Furthermore, such as Figure 4 As shown, the abrasive section 202 includes a plurality of recesses 203, which are arranged in an array on the surface of the diaphragm 2. For example, Figure 5 As shown, the recess 203 includes a groove 2032 and an edge 2031. The edge 2031 is provided along the edge of the groove 2032 and protrudes from the surface of the diaphragm 2. The abrasive part 202 with the above structure can not only improve the contact friction between the diaphragm 2 and the cover plate 1, but also improve the structural strength of the diaphragm 2, so that the diaphragm 2 has better structural stability.

[0068] Furthermore, the ratio of the depth d of the groove 2032 to the thickness D of the diaphragm 2 is greater than 0.2 and less than 0.5 (i.e., 0.2 < d / D < 0.5), and the thickness D of the diaphragm 2 is greater than or equal to 0.06 mm and less than or equal to 0.15 mm (i.e., 0.06 mm ≤ D ≤ 0.15 mm). Within this thickness range, the diaphragm 2 exhibits better strength, is less prone to wrinkles and edge curling, and is beneficial for positioning the diaphragm 2.

[0069] Furthermore, such as Figure 5As shown, the concave block 203 is square, and the width n of the edge 2031 is greater than or equal to 100μm and less than or equal to 150μm (i.e., 100μm≤n≤150μm), and the width m of the groove 2032 is greater than or equal to 300μm and less than or equal to 800μm (i.e., 300μm≤m≤800μm). The ratio of the width m of the groove 2032 to the width n of the edge 2031 is greater than 3 and less than 8 (i.e., 3<m / n<8). By setting the above parameters, not only can the contact friction between the diaphragm 2 and the cover plate 1 be improved, but the structural strength of the corresponding position of the abrasive portion 202 on the diaphragm 2 is not compromised.

[0070] In an optional embodiment of the present invention, the shape of the cover plate 1 is the same as or similar to the shape of the hollow part 201, and the surface area of ​​the cover plate 1 is larger than the area of ​​the hollow part 201 and smaller than the area of ​​the diaphragm 2, so as to ensure that the cover plate 1 can completely fill the hollow part 201 on the diaphragm 2, and there is a partial overlap area 3 between the cover plate 1 and the diaphragm 2.

[0071] like Figures 6 to 8 As shown, the diaphragm 2 and the perforated portion 201 can be trapezoidal in shape, and the cover plate 1 can also be trapezoidal in shape. Of course, the diaphragm 2 and the perforated portion 201 can also be circular or rectangular, and the cover plate 1 can also be circular, rectangular, or other irregular shapes. Here, the shapes of the diaphragm 2, the cover plate 1, and the perforated portion 201 are not limited, and the diaphragm 2 and the cover plate 1 are set to match the shape and size of the actual signal window area on the glass.

[0072] In an optional embodiment of the present invention, such as Figure 1 As shown, the width L of the overlapping region 3 is greater than or equal to 2cm and less than or equal to 4cm (i.e., 2cm≤L≤4cm). When the width of the overlapping region 3 is less than 2cm, the narrower width makes it easier for coating particles to remain at the boundary between the cover plate 1 and the film 2. Furthermore, the narrower overlapping region 3 reduces the contact friction between the film 2 and the cover plate 1, which is not conducive to the stability of the relative position of the film 2 and the cover plate 1. Within the width range of the overlapping region 3, both of the above conditions can be taken into account, ensuring a good coating effect.

[0073] In an optional embodiment of the present invention, such as Figures 6 to 8 As shown, the ratio a1 / a of the distance between the edge of the diaphragm 2 and the edge of the adjacent hollow portion 201 in the first direction to the distance between the two opposite edges of the diaphragm 2 in the first direction is equal to the ratio b1 / b of the distance between the edge of the diaphragm 2 and the edge of the adjacent hollow portion 201 in the second direction to the distance between the two opposite edges of the diaphragm 2 in the second direction, i.e., a1 / a=b1 / b; where the first direction and the second direction are different directions.

[0074] Furthermore, the distance between the two opposite edges of the diaphragm 2 (i.e., a1 and / or b1) is greater than or equal to 4 cm and less than or equal to 8 cm. Within this width range, the diaphragm 2 can ensure full adhesion to the glass surface and is less likely to generate air defects between the two, nor is it likely to have wrinkles or curling on the diaphragm 2.

[0075] In an optional embodiment of the present invention, a positioning line (not shown) is provided on the diaphragm 2 at the edge of the overlapping region 3. The positioning line can be used to position the relative position of the diaphragm 2 and the cover plate 1, ensuring that the mask structure can be accurately set on the glass. The positioning line can be pre-fabricated on the diaphragm 2 using, but is not limited to, black ink.

[0076] In an optional embodiment of the present invention, the cover plate 1 may be made of, but is not limited to, metal, such as stainless steel, copper, aluminum, etc. The thickness h of the cover plate 1 may be greater than or equal to 1 mm and less than or equal to 5 mm (i.e., 1 mm ≤ h ≤ 5 mm), the mass G of the cover plate 1 may be greater than or equal to 1 kg and less than or equal to 10 kg (i.e., 1 kg ≤ G ≤ 10 kg), and the surface area S of the cover plate 1 may be greater than or equal to 100 cm². 2 And less than or equal to 1500cm 2 (i.e., 100cm) 2 ≤S≤1500cm 2 The specific material, thickness, quality, and surface area of ​​the cover plate 1 can be adjusted according to the actual situation. The quality of the cover plate 1 ensures that it can stably cover the film 2, guaranteeing that the film 2 is stably attached to the glass surface and preventing the film 2 from being peeled off.

[0077] In an optional embodiment of the present invention, the diaphragm 2 may be, but is not limited to, an electrostatic film. The electrostatic film is a polymer material, such as one of PE, PP, PET, PVC, PA, etc., preferably a PE film.

[0078] The mask structure of the present invention is used in the process of coating a glass surface. After the coating is completed, the removed cover plate 1 can be reused, while the torn film 2 can be collected and recycled.

[0079] The parameters, dimensions, and materials mentioned above are applicable to both the deposition of silver-based heat insulation films and AR films.

[0080] The features and advantages of the mask structure of the present invention are as follows:

[0081] First, this mask structure can solve the problem of coating boundaries at the junction of the masked and unmasked areas when only the cover plate 1 is used for masking.

[0082] Second, this mask structure solves the problem that the mask 2 alone is easily peeled off during vacuuming. Moreover, by setting the cutout 201 on the mask 2, it solves the problem that the full-area mask 2 (a whole piece of mask 2 without cutouts) is prone to air defects in the middle area when it is bonded to the glass surface, thus effectively improving the production yield.

[0083] Third, the mask structure solves the problem of inaccurate positioning when using only the cover plate 1 and the diaphragm 2. The mask structure of the present invention can accurately position the diaphragm 2 on the glass by combining the robotic arm with optical positioning, thereby improving normal operation efficiency and ensuring good product quality.

[0084] Implementation Method 2

[0085] The present invention provides a vehicle window glass, the surface of which is provided with the above-mentioned mask structure, so as to block at least a portion of the vehicle window glass through the mask structure.

[0086] The area where the mask structure blocks the window glass can be, but is not limited to, the information window area. This information window area can be used to display vehicle information or external environmental information, so no coating treatment is required in this area.

[0087] The above description is merely an illustrative embodiment of the present invention and is not intended to limit the scope of the invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A mask structure, characterized in that, The mask structure includes: A film is attached to the surface of glass, the film having a cutout portion, the area corresponding to the cutout portion and the area located on the outer periphery of the film being a coated area and a non-coated area, respectively. A cover plate is pressed onto the diaphragm. The cover plate and the diaphragm have an overlapping area along the circumference of the diaphragm near the non-coated area, so as to cover the non-coated area by the cooperation of the cover plate and the diaphragm.

2. The mask structure as described in claim 1, characterized in that, At least a portion of the cover plate is located in the perforated portion, and another portion of the cover plate is between the cover plate and the diaphragm and forms the overlapping area along the outer periphery of the perforated portion.

3. The mask structure as described in claim 2, characterized in that, The perforated portion is located in the middle of the diaphragm, and the annular area on the diaphragm near the perforated portion overlaps with the annular area on the cover plate near its edge to form an annular overlapping area. The membrane located on the outer periphery of the overlapping region forms an annular non-overlapping region.

4. The mask structure as described in claim 1, characterized in that, At least a portion of the cover plate is located in the area around the outer periphery of the diaphragm, and another portion of the cover plate forms the overlapping area with the edge of the diaphragm along the circumferential direction of the diaphragm.

5. The mask structure as described in claim 4, characterized in that, The cover plate is provided with a cutout position that matches the diaphragm. The annular area on the diaphragm near its edge overlaps with the annular area on the cover plate near the cutout position to form an annular overlapping area. The membrane located around the overlapping area forms a ring-shaped non-overlapping area.

6. The mask structure as described in claim 4 or 5, characterized in that, The outer edge of the cover plate has a slot for engaging the edge of the glass.

7. The mask structure as described in any one of claims 1 to 5, characterized in that, The surface of the diaphragm facing the cover plate has a frosted portion, which is used to increase the contact friction between the diaphragm and the cover plate.

8. The mask structure as described in claim 7, characterized in that, The abrasive portion is located on the surface of the diaphragm and overlaps with the cover plate.

9. The mask structure as described in claim 7, characterized in that, The abrasive section includes multiple recesses, which are arranged in an array on the surface of the diaphragm.

10. The mask structure as described in claim 9, characterized in that, The recess includes a groove and an edge, the edge being disposed along the edge of the groove and protruding from the surface of the diaphragm.

11. The mask structure as described in claim 10, characterized in that, The ratio of the depth of the groove to the thickness of the diaphragm is greater than 0.2 and less than 0.

5.

12. The mask structure as described in claim 11, characterized in that, The thickness of the diaphragm is greater than or equal to 0.06 mm and less than or equal to 0.15 mm.

13. The mask structure as described in claim 10, characterized in that, The concave block is square, and the width of the edge is greater than or equal to 100μm and less than or equal to 150μm, and the width of the groove is greater than or equal to 300μm and less than or equal to 800μm.

14. The mask structure as described in claim 13, characterized in that, The ratio of the width of the groove to the width of the edge is greater than 3 and less than 8.

15. The mask structure as described in any one of claims 1 to 5, characterized in that, The shape of the cover plate is the same as or similar to the shape of the hollow part, and the surface area of ​​the cover plate is larger than the area of ​​the hollow part but smaller than the area of ​​the membrane.

16. The mask structure as described in claim 15, characterized in that, The width of the overlapping area is greater than or equal to 2cm and less than or equal to 4cm.

17. The mask structure as described in any one of claims 1 to 5, characterized in that, The ratio of the distance between the edge of the diaphragm in the first direction to the edge of the adjacent cutout to the distance between the two opposite edges of the diaphragm in the first direction is equal to the ratio of the distance between the edge of the diaphragm in the second direction to the edge of the adjacent cutout to the distance between the two opposite edges of the diaphragm in the second direction. The first direction and the second direction are different directions.

18. The mask structure as described in claim 17, characterized in that, The distance between the two opposite edges of the diaphragm is greater than or equal to 4 cm and less than or equal to 8 cm.

19. The mask structure as described in any one of claims 1 to 5, characterized in that, A positioning line is provided on the diaphragm at the edge of the overlapping area, and the positioning line is used to position the relative position of the diaphragm and the cover plate.

20. A type of vehicle window glass, characterized in that, The surface of the vehicle window glass is provided with a mask structure as described in any one of claims 1 to 19 to cover at least a portion of the vehicle window glass.

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