CN108000991A - Cover-plate glass stepped construction - Google Patents

Abstract

The present invention relates to a kind of cover-plate glass stepped construction, including：Glass substrate, including inner surface, the outer surface with the inner surface interval；Decorative layer, is formed on the inner surface of the glass substrate；Tack coat, is covered on the same surface of the glass substrate equipped with the decorative layer；And hardened layer, on a surface of the remote glass substrate for being formed at the tack coat.Decorative layer is set between glass substrate and tack coat, such as the increase black ring of camera, the black ring is formed on the glass substrate, glass substrate formed with black ring carries out assembling contraposition with camera, process can so be simplified so as to reduce alignment error, the yield of product is effectively improved, simultaneously because the visual impact that camera alignment error is brought is avoided, so as to improve user experience.Again alternatively, setting character or icon between such as glass substrate and tack coat, the display effect of character or icon can be obviously improved, lifts user experience.

Description

Cover glass laminated structure

technical field

The present invention relates to the field of touch technology, in particular to a cover glass laminated structure applied to touch products.

Background technique

At present, during the assembly process of the camera module and the shell of the electronic product with touch function, it is easy for the camera module to deviate from the previously reserved assembly position of the shell of the electronic product to match the camera module. Consumers can directly feel the alignment deviation from the appearance of the electronic product, thus reducing the user experience.

Contents of the invention

Based on this, it is necessary to provide a cover glass laminate structure capable of solving the above problems.

A cover glass laminated structure, characterized in that it includes: a glass substrate, including an inner surface, and an outer surface spaced from the inner surface; a decorative layer, formed on the inner surface of the glass substrate; covering on the same surface of the glass substrate provided with the decorative layer; and a hardening layer formed on a surface of the adhesive layer away from the glass substrate.

In one of the embodiments, the decorative layer is a black ring, characters or icons.

In one of the embodiments, when the decoration layer is a black ring, the black ring is a ring structure with a circular through hole.

In one of the embodiments, the decoration layer is formed by silk screen printing.

In one of the embodiments, the laminated structure of the cover glass further includes a UV texture layer, an evaporation layer and an ink layer, and the hardened layer, the UV texture layer, the evaporation layer and the ink layer are sequentially stacked.

In one embodiment, the thickness of the hardened layer is 2-5 μm.

In one embodiment, the hardened layer is a UV textured layer, and the laminated structure of the cover glass further includes a evaporated layer and an ink layer, and the hardened layer, the evaporated layer, and the ink layer are sequentially stacked.

In one embodiment, the thickness of the hardened layer is 10-20 μm.

In one embodiment, the adhesive layer has a thickness of 5-20 μm.

In one of the embodiments, the glass substrate has at least part of a curved surface.

A cover glass laminated structure provided by the present invention has at least the following advantages:

A decorative layer is arranged between the glass substrate and the adhesive layer, such as adding a black ring of the camera, the black ring is formed on the glass substrate, and the glass substrate formed with the black ring is assembled and aligned with the camera, which can simplify the process and reduce the friction. The alignment error can effectively improve the yield rate of the product, and at the same time, the user experience can be improved by avoiding the visual impact caused by the alignment error of the camera. Alternatively, for example, characters or icons are arranged between the glass substrate and the bonding layer, which can significantly improve the display effect of the characters or icons and improve user experience.

Description of drawings

FIG. 1 is a schematic diagram of a laminated structure of a cover glass according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of a laminated structure of a cover glass according to another embodiment of the present invention;

Fig. 3 is a schematic diagram of a laminated structure of a cover glass according to another embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a glass substrate shown in an embodiment of the present invention;

Fig. 5 is a schematic side view of a glass substrate according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of a laminated structure of a cover glass according to another embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a glass substrate according to an embodiment of the present invention;

Fig. 8 is a schematic side view of a glass substrate according to an embodiment of the present invention;

Fig. 9 is a schematic structural diagram of a glass substrate shown in another embodiment of the present invention;

Fig. 10 is a schematic structural diagram of a glass substrate shown in another embodiment of the present invention;

Fig. 11 is a schematic structural diagram of a glass substrate shown in another embodiment of the present invention;

FIG. 12 is a schematic side view of the curved glass panel shown in FIG. 11 along the W direction;

Fig. 13 is a schematic cross-sectional view of the curved glass panel shown in Fig. 12 along line A-A;

14 is a schematic end view of the curved glass panel shown in FIG. 11 along the L direction;

FIG. 15 is a schematic cross-sectional view of the curved glass panel shown in FIG. 14 along line B-B.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The cover glass laminated structure provided by the present invention can be used as a display surface casing of electronic products with touch function, and these electronic products include but not limited to mobile phones, cameras, tablet computers, terminal displays and the like.

FIG. 1 is a schematic diagram of a laminated structure of a cover glass according to an embodiment of the present invention. Referring to FIG. 1 , the cover glass laminated structure includes a glass substrate 10 , a decoration layer 30 , an adhesive layer 40 and a hardening layer 50 .

The laminated structure of the cover glass further includes a UV texture layer 60 , a vapor deposition layer 70 and an ink layer 80 , and the hardened layer 50 , the UV texture layer 60 , the vapor deposition layer 70 and the ink layer 80 are sequentially stacked.

The glass substrate 10 has opposing inner surfaces 101 and outer surfaces 102 . Specifically in this embodiment, the glass substrate 10 is flat glass. The glass substrate 10 can be in the shape of a rectangle, a circle, a square, etc. according to the applied electronic products.

In this embodiment, the inner surface 101 of the glass substrate 10 is a surface facing the interior of the electronic product, and the outer surface 102 is a surface facing the user. In some embodiments, according to the anti-reflection and anti-fingerprint requirements of electronic products, functional film layers such as anti-reflection film and anti-fingerprint film can be provided on the outer surface 102 of the glass substrate 10 . In addition, the glass substrate 10 may be strengthened, and a cured film layer may be provided on either surface of the glass substrate 10 .

The decoration layer 30 is formed on the inner surface 101 of the glass substrate 10 , specifically, the decoration layer 30 is formed by silk screen printing. Specifically in this embodiment, the decorative layer 30 is a black ring, the black ring is a ring structure with a circular through hole, the black ring is formed on a glass substrate, and the glass substrate formed with the black ring is in contact with the camera. Assembly alignment, which can simplify the process to reduce alignment errors, effectively improve product yield, and at the same time improve user experience by avoiding the visual impact caused by camera alignment errors. It can be understood that in other embodiments, the decorative layer 30 can be characters or icons, and the characters or icons are formed on the glass substrate by silk screen printing. Compared with the characters or icons obtained by direct exposure and silk screen printing after development, there will be For defects such as jagged edges, the method provided by the present invention can effectively reduce defects caused by direct exposure of decorative layers such as characters or icons, and silk screen printing after development, thereby effectively improving product yield.

The adhesive layer 40 is sticky and very thin. Specifically in this embodiment, the bonding layer 40 is optically clear adhesive (OCA, Optically Clear Adhesive). The bonding layer 40 is pasted on the same surface of the glass substrate 10 on which the decoration layer 30 is disposed. Specifically, in this embodiment, the thickness of the adhesive layer 40 is 5-100 μm. More preferably, the thickness of the adhesive layer 40 is 5-20 μm.

The hardening layer 50 is formed on a surface of the adhesive layer 40 away from the glass substrate 10 . Specifically, in this embodiment, the thickness of the cured layer 50 is 2 to 20 μm. More preferably, the thickness of the hardened layer 50 is 2-5 μm, and this more preferable thickness can realize the effects of less broken defects, less bonding bubbles and lower wrinkled defects during the bonding process of the hardened layer and the glass substrate, Thus, the yield rate of the product can be effectively improved.

The UV texture layer 60 is printed on the hardened layer 50 by UV transfer. Specifically, when forming the UV texture layer 60, UV glue can be coated on the formed hardened layer 50, and then embossed by a template to make the UV glue have a specific pattern, and then apply a mask to cure and clean the uncured UV glue. , the UV texture layer 60 formed on the hardened layer 50 can be obtained. Specifically in this embodiment, the UV texture layer 60 does not emboss the texture in the area corresponding to the black ring, that is, the UV texture layer 60 does not emboss the texture area and is projected onto the glass substrate 10 perpendicular to the incident direction of the light from the camera. The corresponding projected area formed can cover the circular through hole of the black ring.

The vapor deposition layer 70 is disposed on the UV texture layer 60 , and the vapor deposition layer 70 may be, for example, a film layer showing a metallic color. Through the pattern of the UV texture layer 60 , appearances with different patterns and colors can be observed on the outer surface 102 of the glass substrate 10 , presenting a metallic texture, thereby significantly improving the display effect of characters or icons and improving user experience.

After the vapor deposition layer 70 and other structures are arranged on the UV texture layer 60, since the vapor deposition layer 70 is non-transparent, the UV texture layer 60 is transparent, and the UV texture layer 60 and the vapor deposition layer can still be observed on the outer surface 102 side of the glass substrate 10. 70 presented patterns.

The ink layer 80 is disposed on the evaporated layer 70 . Both the ink layer 80 and the evaporated layer 70 are opaque, so when one side of the outer surface 102 is viewed towards the direction of the inner surface 101, the scene blocked by the ink layer 80 and the evaporated layer 70 on the other side of the glass substrate 10 cannot be seen.

FIG. 2 is a schematic diagram of a laminated structure of a cover glass according to another embodiment of the present invention. Please refer to FIG. 2 , the cover glass laminated structure includes a glass substrate 10 , a decoration layer 30 , an adhesive layer 40 and a hardening layer 50 a.

The laminated structure of the cover glass further includes an evaporation layer 70 and an ink layer 80 , and the hardened layer 50 a, the evaporation layer 70 and the ink layer 80 are stacked in sequence.

The glass substrate 10 has opposing inner surfaces 101 and outer surfaces 102 . Specifically in this embodiment, the glass substrate 10 is flat glass. The glass substrate 10 can be in the shape of a rectangle, a circle, a square, etc. according to the applied electronic products.

In this embodiment, the inner surface 101 of the glass substrate 10 is a surface facing the interior of the electronic product, and the outer surface 102 is a surface facing the user. In some embodiments, according to the anti-reflection and anti-fingerprint requirements of electronic products, functional film layers such as anti-reflection film and anti-fingerprint film can be provided on the outer surface 102 of the glass substrate 10 . In addition, the glass substrate 10 may be strengthened, and a cured film layer may be provided on either surface of the glass substrate 10 .

The decoration layer 30 is formed on the inner surface 101 of the glass substrate 10 . Specifically, the decoration layer 30 is formed by silk screen printing. Specifically in this embodiment, the decoration layer 30 is a black ring, and the black ring is an annular structure with a circular through hole. The black ring is formed on the glass substrate, and the glass substrate formed with the black ring is assembled and aligned with the camera, so that the process can be simplified to reduce the alignment error, effectively improving the yield of the product, and at the same time avoiding the alignment of the camera The visual impact caused by errors improves the user experience. It can be understood that in other embodiments, the decorative layer 30 can be characters or icons, and the characters or icons are formed on the glass substrate by silk screen printing. Compared with the characters or icons obtained by direct exposure and silk screen printing after development, there will be For defects such as jagged edges, the method provided by the present invention can effectively reduce defects caused by direct exposure of decorative layers such as characters or icons, and silk screen printing after development, thereby effectively improving product yield.

The adhesive layer 40 is sticky and very thin. Specifically in this embodiment, the bonding layer 40 is optically clear adhesive (OCA, Optically Clear Adhesive). The bonding layer 40 is pasted on the same surface of the glass substrate 10 on which the decoration layer 30 is disposed. Specifically, in this embodiment, the thickness of the adhesive layer 40 is 5-100 μm. More preferably, the thickness of the adhesive layer 40 is 5-20 μm.

The hardening layer 50 a is formed on a surface of the adhesive layer 40 away from the glass substrate 10 . Specifically in this embodiment, the hardened layer 50a is a UV texture layer, which is transferred on the adhesive layer 40 by UV. Specifically, when forming the hardened layer 50a, UV glue can be coated on the formed adhesive layer 40, and then embossed by a template to make the UV glue have a specific pattern, such as in UV glue. A UV texture layer formed on the adhesive layer 40 can be obtained by setting a specific pattern such as a drawing pattern, a CD pattern or a wave pattern on the layer, and then applying a mask to cure and clean the uncured UV glue. Specifically in this embodiment, the UV texture layer is used to provide a hardness supporting adhesive layer, and at the same time, it can form a texture.

Specifically in this embodiment, the UV texture layer 60 does not emboss the texture in the area corresponding to the black ring, that is, the UV texture layer 60 does not emboss the texture area and is projected onto the glass substrate 10 perpendicular to the incident direction of the light from the camera. The corresponding projected area formed can cover the circular through hole of the black ring.

Specifically, in this embodiment, the thickness of the cured layer 50a is 5 to 200 μm. Preferably, the thickness of the hardened layer 50a is 10-50 μm. More preferably, the thickness of the hardened layer 50a is 10-20 μm.

The evaporated layer 70 is disposed on the hardened layer 50a, and the evaporated layer 70 may be, for example, a film layer showing a metallic color. Through the pattern setting of the hardened layer 50a, different patterns and colors can be observed on the outer surface 102 side of the glass substrate 10, presenting a metallic texture, thereby significantly improving the display effect of characters or icons and improving user experience.

After the vapor deposition layer 70 and other structures are arranged on the hardened layer 50a, since the vapor deposition layer 70 is non-transparent and the UV texture layer is transparent, the appearance of the hardened layer 50 and the vapor deposition layer 70 can still be observed on the outer surface 102 side of the glass substrate 10. out of the pattern.

The ink layer 80 is disposed on the evaporated layer 70 . Both the ink layer 80 and the evaporated layer 70 are opaque, so when one side of the outer surface 102 is viewed towards the direction of the inner surface 101, the scene blocked by the ink layer 80 and the evaporated layer 70 on the other side of the glass substrate 10 cannot be seen.

FIG. 3 is a schematic diagram of a laminated structure of a cover glass according to another embodiment of the present invention. Referring to FIG. 3 , the cover glass laminate structure includes a glass substrate 20 , a decoration layer 30 , an adhesive layer 40 and a hardening layer 50 .

The laminated structure of the cover glass further includes a UV texture layer 60 , a vapor deposition layer 70 and an ink layer 80 , and the hardened layer 50 , the UV texture layer 60 , the vapor deposition layer 70 and the ink layer 80 are sequentially stacked.

Referring to FIG. 4 , the glass substrate 20 includes a planar portion 21 and a curved portion 22 extending from two opposite edges of the planar portion 21 respectively bent toward the same side surface of the planar portion 21 . It can be understood that, in other embodiments, four edges of the glass substrate 20 can extend to form the curved portion 22 , or one edge of the glass substrate 20 can extend out of the curved portion 22 .

Please refer to FIG. 5 together. More specifically, the glass substrate 20 includes an inner surface 201 , an outer surface 202 spaced apart from the inner surface 201 , and a side peripheral surface 203 connecting the outer surface 202 and the inner surface 201 . The inner surface 201 refers to a concave side, and the outer surface 202 refers to a convex side. Both the inner surface 201 and the outer surface 202 have a middle area and an edge area. Wherein, in this embodiment, the planar portion 21 defines the middle area, and the curved portion 22 defines the edge area, that is, the planar portion 21 is located in the middle area, and the curved portion 22 is located in the edge area. In other embodiments, the edge area may also surround the middle area, for example, when the four edges of the glass substrate 20 all extend to form the curved portion 22 , the middle area is surrounded by the edge area.

The inner surface 201 also includes a planar portion 211 and a curved portion 221 bent and extended from two opposite edges of the planar portion 211 toward one side. The two curved portions 221 are arranged symmetrically with respect to the planar portion 211 . The cross section of the curved portion 221 is an arc. The radii of the two curved surfaces 221 may be equal or unequal. In this embodiment, the radii of the two curved surfaces 221 are equal. The radius of the two curved surfaces 221 is 1-50 mm, preferably 5-50 mm, more preferably 5-20 mm, more preferably 5-10 mm. The smaller the radius is, the steeper the arc surface is, and thus the formed glass substrate 20 has a stronger 3D stereoscopic effect.

The outer surface 202 also includes a planar portion 212 and a curved portion 222 respectively bent and extended from two opposite edges of the planar portion 212 toward one side. Wherein, the curved portion 222 of the outer surface 202 and the curved portion 221 of the inner surface 201 are both bent toward the same side, that is, bent toward the side facing the inner surface 201 . The two curved portions 222 are arranged symmetrically with respect to the planar portion 212 . The cross section of the curved portion 222 is an arc. The radii of the two curved surfaces 222 may be equal or unequal. In this embodiment, the radii of the two curved surfaces 222 are equal. The radius of the two curved surfaces 222 is 1-50 mm, preferably 5-50 mm, more preferably 5-20 mm, more preferably 5-10 mm.

Wherein, the positions of the plane part 212 and the plane part 211 correspond to each other and have the same size. Therefore, when the outer surface 202 of the glass substrate 20 is placed on a horizontal plane, the orthographic projections of the plane part 211 and the plane part 212 on the horizontal plane coincide completely.

More specifically, the radii of the curved surface 222 and the curved surface 221 are also equal. In this embodiment, the distance between the inner surface 201 and the outer surface 202, that is, the thickness of the glass substrate 20 is 0.2-1.0 mm. The thickness of the glass substrate 20 is consistent everywhere, so that the stress concentration can be better eliminated and the overall strength can be improved. Preferably, the thickness of the glass substrate 20 is 0.5-0.7 mm.

The angle between the tangent line of the point at the edge of the arc where the curved surface 222 is located and the plane portion 212 is defined as an angle C, and the angle C is 0°<C<90°, preferably 0°<C<45°. The angle C between the curved portion 221 and the flat portion 211 can also have the same setting.

Further, the distance between the edge point of the arc where the curved surface 221 is located and the flat surface 212 , that is, the height H of the glass substrate 20 is 0.5-5 mm.

In some embodiments, the orthographic projection of the glass substrate 20 on the horizontal plane is a rectangle, wherein the length of the rectangle is 50-500 mm, and the width is 30-300 mm. The curved parts 221 and 222 are arranged on the two edges of the long rectangle.

In the embodiment shown in FIGS. 3 to 5 , the curved portion 22 is bent and extended from two opposite sides of the planar portion 21 toward one side. In other embodiments, the four sides of the planar portion 21 can also be bent and extended toward one side to form the curved portion 22 forming an arc. The radii of the curved portions 22 extending from opposite sides can be equal or unequal. The radii of the curved portions 22 extending from two adjacent sides can be equal or unequal. In the embodiment in which the curved surface 22 is formed on all four sides, other features can be set with reference to the embodiment shown in FIG. 3 to FIG. 5 , which will not be repeated here.

Please refer to FIG. 3 again, the decoration layer 30 is formed on the inner surface 201 of the glass substrate 20 . Specifically, the decoration layer 30 is formed by silk screen printing. Specifically in this embodiment, the decorative layer 30 is a black ring, the black ring is a ring structure with a circular through hole, the black ring is formed on a glass substrate, and the glass substrate formed with the black ring is in contact with the camera. Assembly alignment, which can simplify the process to reduce alignment errors, effectively improve product yield, and at the same time improve user experience by avoiding the visual impact caused by camera alignment errors. It can be understood that in other embodiments, the decorative layer 30 can be characters or icons, and the characters or icons are formed on the glass substrate by silk screen printing. Compared with the characters or icons obtained by direct exposure and silk screen printing after development, there will be For defects such as jagged edges, the method provided by the present invention can effectively reduce defects caused by direct exposure of decorative layers such as characters or icons, and silk screen printing after development, thereby effectively improving product yield.

The adhesive layer 40 is sticky and very thin. Specifically in this embodiment, the bonding layer 40 is optically clear adhesive (OCA, Optically Clear Adhesive). The adhesive layer 40 is pasted on the same surface of the glass substrate 20 provided with the decoration layer. Specifically, in this embodiment, the thickness of the adhesive layer 40 is 5-100 μm. More preferably, the thickness of the adhesive layer 40 is 5-20 μm.

The hardening layer 50 is formed on a surface of the adhesive layer 40 away from the glass substrate 20 . Specifically, in this embodiment, the thickness of the cured layer 50 is 2 to 20 μm. More preferably, the thickness of the hardened layer 50 is 2-5 μm, and this more preferable thickness can realize the effects of less broken defects, less bonding bubbles and lower wrinkled defects during the bonding process of the hardened layer and the glass substrate, Thus, the yield rate of the product can be effectively improved.

The UV texture layer 60 is printed on the hardened layer 50 by UV transfer. Specifically, when forming the UV texture layer 60, UV glue can be coated on the formed hardened layer 50, and then embossed by a template to make the UV glue have a specific pattern, and then apply a mask to cure and clean the uncured UV glue. , the UV texture layer 60 formed on the hardened layer 50 can be obtained. Specifically in this embodiment, the UV texture layer 60 does not emboss the texture in the area corresponding to the black ring, that is, the UV texture layer 60 does not emboss the texture area and is projected onto the glass substrate 20 perpendicular to the light incident direction of the camera. The corresponding projected area formed can cover the circular through hole of the black ring.

The vapor deposition layer 70 is disposed on the UV texture layer 60 , and the vapor deposition layer 70 may be, for example, a film layer showing a metallic color. Through the pattern of the UV texture layer 60 , appearances with different patterns and colors can be observed on the outer surface 202 side of the glass substrate 20 , presenting a metallic texture, thereby significantly improving the display effect of characters or icons and improving user experience.

After the UV texture layer 60 is provided with structures such as the vapor deposition layer 70, since the vapor deposition layer 70 is non-transparent, the UV texture layer 60 is transparent, and the UV texture layer 60 and the vapor deposition layer can still be observed on the outer surface 202 side of the glass substrate 20. 70 presented patterns.

The ink layer 80 is disposed on the evaporated layer 70 . Both the ink layer 80 and the evaporated layer 70 are opaque, so when one side of the outer surface 202 is viewed toward the direction of the inner surface 201, the scene blocked by the ink layer 80 and the evaporated layer 70 on the other side of the glass substrate 20 cannot be seen.

FIG. 6 is a schematic diagram of a laminated structure of a cover glass according to another embodiment of the present invention. Referring to FIG. 6 , the cover glass laminated structure includes a glass substrate 20 , a decoration layer 30 , an adhesive layer 40 and a hardening layer 50 a.

The laminated structure of the cover glass further includes an evaporation layer 70 and an ink layer 80 , and the hardened layer 50 a, the evaporation layer 70 and the ink layer 80 are stacked in sequence.

Referring to FIG. 7 , the glass substrate 20 includes a planar portion 21 and curved portions 22 extending from two opposite edges of the planar portion 21 respectively bent toward the same side surface of the planar portion 21 . It can be understood that, in other embodiments, four edges of the glass substrate 20 can extend to form the curved portion 22 , or one edge of the glass substrate 20 can extend out of the curved portion 22 .

Please refer to FIG. 8 . More specifically, the glass substrate 20 includes an inner surface 201 , an outer surface 202 spaced apart from the inner surface 201 , and a side peripheral surface 203 connecting the outer surface 202 and the inner surface 201 . The inner surface 201 refers to a concave side, and the outer surface 202 refers to a convex side. Both the inner surface 201 and the outer surface 202 have a middle area and an edge area. Wherein, in this embodiment, the planar portion 21 defines the middle area, and the curved portion 22 defines the edge area, that is, the planar portion 21 is located in the middle area, and the curved portion 22 is located in the edge area. In other embodiments, the edge area may also surround the middle area, for example, when the four edges of the glass substrate 20 all extend to form the curved portion 22 , the middle area is surrounded by the edge area.

The inner surface 201 also includes a planar portion 211 and a curved portion 221 bent and extended from two opposite edges of the planar portion 211 toward one side. The two curved portions 221 are arranged symmetrically with respect to the planar portion 211 . The cross section of the curved portion 221 is an arc. The radii of the two curved surfaces 221 may be equal or unequal. In this embodiment, the radii of the two curved surfaces 221 are equal. The radius of the two curved surfaces 221 is 1-50 mm, preferably 5-50 mm, more preferably 5-20 mm, more preferably 5-10 mm. The smaller the radius is, the steeper the arc surface is, and thus the formed glass substrate 20 has a stronger 3D stereoscopic effect.

The outer surface 202 also includes a planar portion 212 and a curved portion 222 respectively bent and extended from two opposite edges of the planar portion 212 toward one side. Wherein, the curved portion 222 of the outer surface 202 and the curved portion 221 of the inner surface 201 are both bent toward the same side, that is, bent toward the side facing the inner surface 201 . The two curved portions 222 are arranged symmetrically with respect to the planar portion 212 . The cross section of the curved portion 222 is an arc. The radii of the two curved surfaces 222 may be equal or unequal. In this embodiment, the radii of the two curved surfaces 222 are equal. The radius of the two curved surfaces 222 is 1-50 mm, preferably 5-50 mm, more preferably 5-20 mm, more preferably 5-10 mm.

Wherein, the positions of the plane part 212 and the plane part 211 correspond to each other and have the same size. Therefore, when the outer surface 202 of the glass substrate 20 is placed on a horizontal plane, the orthographic projections of the plane part 211 and the plane part 212 on the horizontal plane coincide completely.

More specifically, the radii of the curved surface 222 and the curved surface 221 are also equal. In this embodiment, the distance between the inner surface 201 and the outer surface 202, that is, the thickness of the glass substrate 20 is 0.2-1.0 mm. The thickness of the glass substrate 20 is consistent everywhere, so that the stress concentration can be better eliminated and the overall strength can be improved. Preferably, the thickness of the glass substrate 20 is 0.5-0.7 mm.

The angle between the tangent line of the point at the edge of the arc where the curved surface 222 is located and the plane portion 212 is defined as an angle C, and the angle C is 0°<C<90°, preferably 0°<C<45°. The angle C between the curved portion 221 and the flat portion 211 can also have the same setting.

Further, the distance between the edge point of the arc where the curved surface 221 is located and the flat surface 212 , that is, the height H of the glass substrate 20 is 0.5-5 mm.

In some embodiments, the orthographic projection of the glass substrate 20 on the horizontal plane is a rectangle, wherein the length of the rectangle is 50-500 mm, and the width is 30-300 mm. The curved parts 221 and 222 are arranged on the two edges of the long rectangle.

In the embodiment shown in FIGS. 6 to 8 , the curved portion 22 is bent and extended from two opposite sides of the planar portion 21 toward one side. In other embodiments, the four sides of the planar portion 21 can also be bent and extended toward one side to form the curved portion 22 forming an arc. The radii of the curved portions 22 extending from opposite sides can be equal or unequal. The radii of the curved portions 22 extending from two adjacent sides can be equal or unequal. In the embodiment in which the curved surface 22 is formed on all four sides, other features can be set with reference to the embodiment shown in FIG. 6 to FIG. 8 , and will not be repeated here.

Please refer to FIG. 6 again, the decoration layer 30 is formed on the inner surface 201 of the glass substrate 20 . Specifically, the decoration layer 30 is formed by silk screen printing. Specifically in this embodiment, the decorative layer 30 is a black ring, the black ring is a ring structure with a circular through hole, the black ring is formed on a glass substrate, and the glass substrate formed with the black ring is in contact with the camera. Assembly alignment, which can simplify the process to reduce alignment errors, effectively improve product yield, and at the same time improve user experience by avoiding the visual impact caused by camera alignment errors. It can be understood that in other embodiments, the decorative layer 30 can be characters or icons, and the characters or icons are formed on the glass substrate by silk screen printing. Compared with the characters or icons obtained by direct exposure and silk screen printing after development, there will be For defects such as jagged edges, the method provided by the present invention can effectively reduce defects caused by direct exposure of decorative layers such as characters or icons, and silk screen printing after development, thereby effectively improving product yield.

The adhesive layer 40 is sticky and very thin. Specifically in this embodiment, the bonding layer 40 is optically clear adhesive (OCA, Optically Clear Adhesive). The adhesive layer 40 is pasted on the same surface of the glass substrate 20 provided with the decoration layer. Specifically, in this embodiment, the thickness of the adhesive layer 40 is 5-100 μm. More preferably, the thickness of the adhesive layer 40 is 5-20 μm.

The hardened layer 50 a is formed on a surface of the adhesive layer 40 away from the glass substrate 20 . Specifically in this embodiment, the hardened layer 50a is a UV texture layer, which is transferred on the adhesive layer 40 by UV. Specifically, when forming the hardened layer 50a, UV glue can be coated on the formed adhesive layer 40, and then embossed by a template to make the UV glue have a specific pattern, such as in UV glue. A UV texture layer formed on the adhesive layer 40 can be obtained by setting a specific pattern such as a drawing pattern, a CD pattern or a wave pattern on the layer, and then applying a mask to cure and clean the uncured UV glue. Specifically, in this embodiment, the UV glue is used to provide a hardness supporting adhesive layer, and at the same time, it can form a texture.

Specifically in this embodiment, the UV texture layer 60 does not emboss the texture in the area corresponding to the black ring, that is, the UV texture layer 60 does not emboss the texture area and is projected onto the glass substrate 20 perpendicular to the light incident direction of the camera. The corresponding projected area formed can cover the circular through hole of the black ring.

Specifically, in this embodiment, the thickness of the cured layer 50a is 5 to 200 μm. Preferably, the thickness of the hardened layer 50a is 10-50 μm. More preferably, the thickness of the hardened layer 50a is 10-20 μm.

The evaporated layer 70 is disposed on the hardened layer 50a, and the evaporated layer 70 may be, for example, a film layer showing a metallic color. Through the pattern of the UV texture layer, different patterns and colors can be observed on the outer surface 202 of the glass substrate 20, presenting a metallic texture, thereby significantly improving the display effect of characters or icons and improving user experience.

After the vapor deposition layer 70 and other structures are arranged on the hardened layer 50a, since the vapor deposition layer 70 is non-transparent and the UV texture layer is transparent, the UV texture layer and the vapor deposition layer 70 can still be observed on the outer surface 202 side of the glass substrate 20. out of the pattern.

The ink layer 80 is disposed on the evaporated layer 70 . Both the ink layer 80 and the evaporated layer 70 are opaque, so when one side of the outer surface 202 is viewed toward the direction of the inner surface 201, the scene blocked by the ink layer 80 and the evaporated layer 70 on the other side of the glass substrate 20 cannot be seen.

In some other embodiments, the glass substrate 20 is not limited to the structures shown in FIGS. 4-8 . For example, shown in Fig. 9 and Fig. 10 is the glass substrate of another embodiment, and it comprises inner surface 201a, and the outer surface 202a that is spaced apart from inner surface 201a, and the side peripheral surface that connects outer surface 202a and inner surface 201a (Fig. unmarked).

The distance between the inner surface 201a and the outer surface 202a is 0.2-1.0 mm, that is, the thickness of the glass substrate is 0.2-1.0 mm.

The inner surface 201a has a central axis 203a, and the inner surface 201a is symmetrically arranged along the central axis 203a. The outer surface 202a also has a central axis 204a, and the outer surface 202a is symmetrically disposed along the central axis 204a.

The inner surface 201a is an inner curved surface that curves to the same side to form an arc with the central axis 203a of the inner surface 201a as the center, and the outer surface 202a is an outer curved surface that curves to the same side to form an arc with the central axis 204a of the outer surface 202a as the center, The radius R of the inner curved surface and the outer curved surface is 50-1000 mm, and the height H of the glass substrate is 0.5-5 mm.

In some embodiments, the radii R of the inner curved surface and the outer curved surface are equal, that is, the thickness of the glass substrate is uniform everywhere. This can better eliminate stress concentration and improve the overall strength.

The height H of the glass substrate refers to the distance between the plane where the two parallel sides 205a, 206a farthest from the inner surface 201a relative to the central axis 203a are located, and the central axis 204a of the outer surface 202a.

In some embodiments, the included angle between the two parallel sides 205a, 206a of the arc-shaped inner surface 201a and the center line of the arc, that is, the central angle corresponding to the arc where the inner surface 201a is located is denoted by C, where 60°<C<180°. The central angle C corresponding to the arc of the outer surface 202a also satisfies 60°<C<180°.

Shown in Fig. 11 is the glass substrate of another embodiment, referring to Fig. 12 and Fig. 13 simultaneously, described glass substrate comprises inner surface 201b, outer surface 202b spaced apart from inner surface 201b, and connects outer surface 202b and inner surface 201b side surface (not shown).

The distance between the inner surface 201b and the outer surface 202b is 0.2-1.0 mm, that is, the thickness of the glass substrate is 0.2-1.0 mm.

The inner surface 201b has a centerline W1 in the width direction, and the outer surface 202b also has a centerline W2 in the width direction. The inner surface 201b is mirror-symmetrical along the central line W1. The outer surface 202b is mirror-symmetrical along the central line W2. Place the glass substrate on a horizontal plane and make an orthographic projection on the glass substrate on the horizontal plane. The centerline W1 of the inner surface 201b and the centerline W2 of the outer surface 202b coincide in the direction of the orthographic projection of the glass substrate.

Referring to FIG. 14 and FIG. 15 at the same time, the inner surface 201b has a centerline L1 in the length direction, and the outer surface 202b also has a centerline L2 in the length direction. The inner surface 201b is mirror-symmetrical along the central line L1. The outer surface 202b is mirror-symmetrical along the central line L2. Place the glass substrate on a horizontal plane, and make an orthographic projection on the glass substrate on the horizontal plane. The centerline L1 of the inner surface 201b and the centerline L2 of the outer surface 202b coincide in the direction of the orthographic projection of the glass substrate. The orthographic projections of the centerlines L1, L2 are perpendicular to the orthographic projections of the centerlines W1, L2.

The inner surface 201b is curved to the same side centered on the center line L1 in the longitudinal direction, and the outer surface 202b is also curved to the same side centered on the center line L2 in the longitudinal direction. The arc radius of the centerline L1 in the longitudinal direction of the inner surface 201b is 50-1000mm, and the arc radius of the longitudinal centerline L2 of the outer surface 202b is also 50-1000mm. In the embodiment shown in the figure, the arc radii of the centerlines L1 and L2 of the inner surface 201b and the outer surface 202b in the length direction are equal.

At the same time, the inner surface 201b is also curved toward the same side centering on the center line W1 in the width direction, and the outer surface 202b is also curved toward the same side centering on the center line W2 in the width direction. The arc radius of the centerline W1 in the width direction of the inner surface 201b is 50-1000mm, and the arc radius of the centerline W2 in the width direction of the outer surface 202b is also 50-1000mm. The arc radii of the centerlines W1 and W2 of the inner surface 201b and the outer surface 202b in the width direction are equal.

The height of the glass substrate is 0.5-5 mm. The height refers to the distance between the center point of the outer surface 202b (that is, the intersection of the centerline L2 in the length direction and the centerline W2 in the width direction) to at least three lowest points on the inner surface 201. distance between planes. In the embodiment shown in the figure, the four corners of the inner surface 201b are located in the same plane, and the height is the distance between the plane where the four corners are located and the center point of the outer surface 202b.

In some embodiments, the thickness of the glass substrate is uniform throughout. This can better eliminate stress concentration and improve the overall strength.

In addition, the arc radii of the centerlines W1 and W2 may be equal to or different from the arc radii of the centerlines L1 and L2.

In some embodiments, the central angle corresponding to the arc of the inner surface 201b and the outer surface 202b in the length direction of the centerlines L1 and L2 is C1, where 60°<C1<180°. The central angle corresponding to the arc of the centerlines W1 and W2 of the inner surface 201b and the outer surface 202b in the width direction is C2, where 60°<C2<180°.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

A cover glass laminated structure provided by the present invention has at least the following advantages:

A decorative layer is arranged between the glass substrate and the adhesive layer, such as adding a black ring of the camera, the black ring is formed on the glass substrate, and the glass substrate formed with the black ring is assembled and aligned with the camera, which can reduce the alignment error, so The process can be simplified to reduce the alignment error, effectively improving the yield rate of the product, and at the same time, the visual impact caused by the alignment error of the camera is avoided, thereby improving the user experience. Alternatively, for example, characters or icons are arranged between the glass substrate and the bonding layer, which can significantly improve the display effect of the characters or icons and improve user experience.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A kind of 1. cover-plate glass stepped construction, it is characterised in that including：

   Glass substrate, including inner surface, the outer surface with the inner surface interval；

   Decorative layer, is formed on the inner surface of the glass substrate；

   Tack coat, is covered on the same surface of the glass substrate equipped with the decorative layer；And

   Hardened layer, on a surface of the remote glass substrate for being formed at the tack coat.
2. 2. cover-plate glass stepped construction according to claim 1, it is characterised in that the decorative layer for black ring, character or Icon.
3. 3. cover-plate glass stepped construction according to claim 2, it is characterised in that when the decorative layer is black ring, institute It is the loop configuration with circular through hole to state black ring.
4. 4. the cover-plate glass stepped construction according to Claims 2 or 3, it is characterised in that the decorative layer passes through silk-screen side Formula is formed.
5. 5. cover-plate glass stepped construction according to claim 1, it is characterised in that the cover-plate glass stepped construction is also wrapped UV texture layers, evaporation layer and ink layer are included, the hardened layer, UV texture layers, evaporation layer and ink layer are cascading.
6. 6. cover-plate glass stepped construction according to claim 5, it is characterised in that the thickness of the hardened layer is 2~5 μ m。
7. 7. cover-plate glass stepped construction according to claim 1, it is characterised in that the hardened layer is UV texture layers, institute State cover-plate glass stepped construction and further include evaporation layer and ink layer, the hardened layer, evaporation layer and ink layer are cascading.
8. 8. cover-plate glass stepped construction according to claim 7, it is characterised in that the thickness of the hardened layer is 10~20 μm。
9. 9. cover-plate glass stepped construction according to claim 1, it is characterised in that the thickness of the tack coat is 5~20 μ m。
10. 10. according to 1,2,3,5 to 9 any one of them cover-plate glass stepped construction of claim, it is characterised in that the glass Substrate has at least part of curved surface.