CN107454225B

CN107454225B - Three-dimensional cambered surface glass, mobile phone cover, manufacturing method of three-dimensional cambered surface glass and mobile phone cover and mobile phone

Info

Publication number: CN107454225B
Application number: CN201710756949.8A
Authority: CN
Inventors: 刘立群; 蒋军平
Original assignee: Shenzhen Yiwei Holding Co ltd
Current assignee: Shenzhen Yiwei Holding Co ltd
Priority date: 2017-08-29
Filing date: 2017-08-29
Publication date: 2020-06-23
Anticipated expiration: 2037-08-29
Also published as: CN107454225A

Abstract

The invention discloses a three-dimensional cambered surface glass, a mobile phone cover, a manufacturing method thereof and a mobile phone, wherein the three-dimensional cambered surface glass comprises the following components: a cambered surface glass layer; an explosion-proof diaphragm layer, a silk screen printing layer, a gray level gradient layer, a texture layer, a non-conductive coating layer and a covering layer are sequentially arranged on the inner arc surface side of the arc surface glass layer. The three-dimensional cambered surface glass has excellent three-dimensional visual sense.

Description

Three-dimensional cambered surface glass, mobile phone cover, manufacturing method of three-dimensional cambered surface glass and mobile phone cover and mobile phone

Technical Field

The invention relates to the technical field of three-dimensional glass, in particular to three-dimensional cambered surface glass, a mobile phone cover, a manufacturing method of the mobile phone cover and a mobile phone.

Background

With the continuous improvement of the manufacturing process of the smart phone, the material of the body of the smart phone is also continuously changed. Compared with metal materials, the glass can realize abundant colors, and does not have the electromagnetic shielding characteristic of metal, and the mobile phone rear cover does not need to be designed with annoying antenna strips.

The glass cover plate used by the existing digital product is divided into: 2D glass, 2.5D glass, and also 3D glass. The 2D glass is common pure plane glass and has no arc design; 2.5D glass is planar in the middle, but the edges are arc-shaped; and 3D glass, whether the middle or the edge adopts an arc design.

In recent years, 3D glass covers are preferred by mainstream mobile phone brands, but 2.5D glass covers are more preferred. Under the condition that the requirements of people on various indexes of the mobile phone are higher and higher, the existing 3D glass cover still cannot meet the requirements of users on high standards of appearance.

Specifically, in the prior art, various treatments of the soft membrane only stay on the plane effect, so that after the soft membrane is attached to the 3D cambered surface, the three-dimensional effect of the cambered glass cannot be realized to the maximum extent, and a great improvement space still exists.

Disclosure of Invention

In view of the above problems, the present invention provides a three-dimensional curved glass with excellent stereoscopic visual sense, a mobile phone cover, a method for manufacturing the same, and a mobile phone.

According to a first aspect of the present invention, there is provided a stereoscopic curved glass comprising:

a cambered surface glass layer;

an explosion-proof diaphragm layer, a silk screen printing layer, a gray level gradient layer, a texture layer, a non-conductive coating layer and a covering layer are sequentially arranged on the inner arc surface side of the arc surface glass layer.

In the above three-dimensional cambered glass, the gray scale gradual change layer includes a transparent region located in the middle and two gray scale gradual change regions symmetrically disposed on two sides of the transparent region, and the gray scale of the gray scale gradual change region gradually increases from the edge near one side of the transparent region to the edge on the other side of the gray scale gradual change region.

In the three-dimensional cambered surface glass, the gray scale of the edge of one side of the gray scale gradual change area, which is close to the transparent area, is 1-10%, and the gray scale of the edge of the other side of the gray scale gradual change area is 95-100%.

In the above three-dimensional arc glass, the area of the transparent region is 20% to 30% of the total area of the gray-scale gradient layer.

In the three-dimensional cambered glass, the explosion-proof membrane layer is a PET layer, and the PET layer is adhered to the inner cambered surface of the cambered glass layer through optical cement.

In the three-dimensional cambered surface glass, the silk-screen layer is a silk-screen character layer.

In the three-dimensional cambered surface glass, the silk-screen printing layer is a mirror silver layer.

In the three-dimensional cambered surface glass, the texture layer is an embossing layer formed by ultraviolet curing glue.

According to a second aspect of the present invention, a mobile phone cover is provided, which is formed by the above-mentioned three-dimensional cambered glass.

According to a third aspect of the present invention there is provided a handset comprising a handset cover as described above.

According to a fourth aspect of the present invention, there is provided a method of manufacturing a cell phone cover, comprising:

cutting and forming the explosion-proof membrane layer with the optical adhesive layer;

forming a silk-screen printing layer on the side, opposite to the optical adhesive layer, of the explosion-proof membrane layer;

forming a gray level gradient layer on the silk screen layer;

forming a texture layer on the gray gradation layer;

forming a non-conductive coating layer on the texture layer;

forming a covering layer on the non-conductive coating layer to form a composite film;

and under vacuum, the composite film is attached to the cambered surface glass layer through the optical adhesive layer.

In the above method for manufacturing a mobile phone cover, the gradation gradient layer includes a transparent region in the middle and two gradation gradient regions symmetrically disposed at both sides of the transparent region, and the gradation of the gradation gradient region gradually increases from an edge near one side of the transparent region to an edge at the other side of the gradation gradient region.

In the above method of manufacturing a cell phone cover, the gradation-graded layer is printed in a dot pattern of 0.01mm or less.

In the above method for manufacturing a cell phone cover, the gray scale of the edge of the gray scale gradual change region on one side close to the transparent region is 5 to 10%, and the gray scale of the edge of the gray scale gradual change region on the other side is 95 to 100%.

In the above method of manufacturing a cell phone cover, the area of the transparent region is 20% to 30% of the total area of the gradation gradient layer.

The three-dimensional glass can be used for a three-dimensional mobile phone cover, has strong three-dimensional sense, greatly improves the three-dimensional visual feeling of a product in appearance and brings better experience to users.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention.

Fig. 1 shows a schematic view of a three-dimensional curved glass according to an embodiment of the invention.

Fig. 2 shows a schematic diagram of a gradation layer of a stereoscopic curved glass according to an embodiment of the present invention.

Fig. 3 shows a schematic flow diagram of a method of manufacturing a mobile phone cover according to an embodiment of the invention.

Description of the main element symbols:

110-cambered surface glass layer; 120-an explosion-proof membrane layer; 130-silk screen printing layer; 140-gradation layer; 150-a texture layer; 160-non-conductive coating layer; 170-cover layer

Detailed Description

Various embodiments of the present invention will be described more fully hereinafter. The present invention is capable of various embodiments and of various modifications and changes. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described, and the intention is to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of various embodiments of the invention.

Hereinafter, the terms "includes" or "may include" possibly used in various embodiments of the present invention indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, the terms "comprises," "comprising," "has," "having," and the like, as used in various embodiments of the present invention, are intended to mean only a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, nor excluding the possibility of adding one or more features, numbers, steps, operations, elements, components, or combinations of the foregoing.

In various embodiments of the present invention, the expression "a and/or B" includes any or all combinations of the words listed simultaneously, i.e. may include a, may include B, and may also include both a and B.

In the present invention, it should be understood by those skilled in the art that the terms indicating an orientation or a positional relationship herein are based on the orientations and the positional relationships shown in the drawings and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation and operate, and thus, should not be construed as limiting the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Fig. 1 shows a schematic view of a three-dimensional curved glass according to an embodiment of the invention. The three-dimensional cambered glass in figure 1 comprises: a cambered glass layer 110; an explosion-proof diaphragm layer 120, a silk screen printing layer 130, a gray scale gradient layer 140, a texture layer 150, a non-conductive coating layer 160 and a cover layer 170 are sequentially arranged on the inner arc surface side of the arc surface glass layer 110.

The arc glass layer 110 is 3D glass with an arc-shaped middle and edge, and can be formed by performing a secondary grinding process (such as hot pressing, thinning, etc.) on the original pure flat glass. For example, common 3D glass processing processes include: HF (hydrogen fluoride) etching + numerically controlled machine (CNC); hot bending molding and CNC; hot bending molding and traditional heat laser; and (4) performing photo-thermal bending molding and ISL cold shock.

The burst disk layer 120 is provided on the inner arc surface side of the arc glass layer 110, and the burst disk layer 120 may be a polyester layer such as PET, preferably a PET layer. The PET layer may be adhered to the intrados of the cambered glass layer 110 by Optical Cement (OCA).

And a silk screen printing layer 130 is arranged on the explosion-proof diaphragm layer 120. And the characters LOGO can be manufactured on the explosion-proof diaphragm layer 120 through silk screen printing. When the screen printing machine is used for a mobile phone cover, characters and patterns such as brands, models, manufacturer names and the like can be printed in a screen printing mode. The screen printing layer 130 is preferably made of mirror silver ink, thereby having a good mirror effect when viewed from the front.

The gray scale gradual change layer 140 is arranged on the silk screen layer 130, and the gray scale gradual change layer 140 can be formed by high-precision printer printing, for example, a left-right direction gradual change layer can be printed by a dot matrix chart of less than or equal to 0.01mm, so as to ensure the uniformity and high fineness of gradual change transition.

For example, as shown in fig. 2, the gray gradation layer 140 may include a transparent region in the middle and two gray gradation regions symmetrically disposed at both sides of the transparent region, and the gray scales of the two gray gradation regions gradually increase from an edge near one side of the transparent region to an edge on the other side of the gray gradation region.

The inventor of the invention finds that the effect of greatly improving the three-dimensional effect of the cambered surface can be achieved by arranging the gray-scale gradual change layer, namely, the dark part is gradually deepened from the middle area of the glass to the edge parts at two sides by utilizing the principle similar to a sketch shadow method.

The gray scale of the edge of the gray scale gradual change region close to the transparent region is preferably 1-10%, for example, 2%, 3%, 4%, 5%, 6%, 7%, 8%, or 9%, and more preferably 5-10%. The gray scale of the edge on the other side of each gray scale gradual change region is 95-100%, such as 96%, 97%, 98%, or 99%, and preferably 100%. The gray scale of the transparent area is 0.

The area of the transparent region is preferably 20% to 30% of the total area of the gradation gradient layer. The total area of the gradation gradient layer substantially corresponds to the area of the inner curved surface of the curved glass layer.

A texture layer 150 is disposed on the gradation layer 140. The texture layer 150 may be formed by UV embossing process using UV curing glue to make various lines and arrange texture effects, thereby forming decorative texture patterns. When the three-dimensional cambered surface glass is used for a mobile phone cover, different appearances and textures can be given to the mobile phone through different texture patterns.

A non-conductive coating (NCVM) layer 160 is disposed on the texture layer 150. The non-conductive coating layer can realize non-conductivity, meet the normal use of wireless communication products and ensure the metal texture. In addition, the metal appearance effect with different colors can be formed, and the function of beautifying is achieved.

A cap layer 170 is disposed on the non-conductive coating layer 160. The cover layer 170 is opaque and different base colors can be selected as desired.

When the three-dimensional cambered surface glass is applied to a rear cover of a mobile phone, the three-dimensional effect can be greatly enhanced, and the user experience is improved. Of course, the three-dimensional cambered surface glass can also be applied to the rear covers of electronic products such as tablet computers and electronic books.

Example 2

Fig. 3 shows a flow diagram of a method of manufacturing a mobile phone cover according to an embodiment of the invention.

The method of manufacturing a cell phone cover shown in fig. 3 includes: step S310, cutting and molding the explosion-proof membrane layer with the optical adhesive layer, that is, cutting the explosion-proof membrane layer with the optical adhesive layer into the shape of the rear cover of the mobile phone. Of course, the cutting can be carried out according to different products and corresponding shapes. The burst disk layer is preferably made of PET material, and the PET material can be provided with Optical Cement (OCA) for adhering the arc-shaped glass layer.

And step S320, forming a silk-screen printing layer on the side, opposite to the optical adhesive layer, of the explosion-proof membrane layer. The mobile phone can be printed with characters and patterns such as brand, model and manufacturer name.

Preferably, the mirror silver ink is adopted, has excellent printability and can be naturally dried or dried at low temperature after being printed without blocking a screen.

When the mirror surface silver ink is used for silk screen printing, the coating range on the screen is controlled to be as close to the printing area size range of effective pictures and texts as possible, otherwise, the coating area is large, the solvent in the mirror surface ink is quickly volatilized to cause screen blockage, continuous printing cannot be performed, and the like. The viscosity of the mirror silver ink is low, and a screen plate with a higher mesh needs to be selected during printing, for example, a 250-mesh and 300-mesh screen can be used.

And step S330, forming a gray level gradient layer on the silk screen layer. Can introduce high accuracy printer in this process, print left and right direction gradual change picture layer through the dot-matrix chart of less than or equal to 0.01mm, can guarantee that gradual change transition is even and high fineness.

The formed gray scale gradual change layer can comprise a transparent area in the middle and two gray scale gradual change areas symmetrically arranged at two sides of the transparent area, and the gray scales of the two gray scale gradual change areas are gradually increased from the edge close to one side of the transparent area to the edge at the other side of the gray scale gradual change area.

The gray scale of the edge of the gray scale gradual change area close to one side of the transparent area is preferably 1-10%, and more preferably 5-10%. The gray scale of the edge on the other side of each gray scale gradual change area is 95-100%, and preferably 100%. The area of the transparent region is preferably 20% to 30% of the total area of the gradation gradient layer.

Increase the even gradual change layer stack of one deck transition through introducing high accuracy printer, combine the 3D glass of big cambered surface, strengthened the holistic stereoeffect of cell phone cover greatly.

In step S340, a texture layer is formed on the gradation layer. The texture layer may be formed by a UV embossing process. The embossing process is a process for performing artistic processing on the surface of a printed matter by using a concave-convex mould and enabling the printed matter to generate plastic deformation under the action of certain pressure. The surface of the printed matter after embossing presents patterns and textures with different depths, has obvious relief stereoscopic impression, and enhances the artistic appeal of the printed matter. Through UV rendition, can make the effect of various lines and the line of arranging on the cell-phone lid, can form decorative texture pattern from this.

Step S350, forming a non-conductive film layer on the texture layer. The NCVM combines the characteristics of the traditional vacuum coating technology, adopts a new coating technology and new materials to achieve the metal appearance effects of different colors of common vacuum plating, and plays a role in beautifying the surface of a workpiece. The finished product made using the NCVM technology can pass high voltage tests without conduction or breakdown.

Because of its non-conductivity, when the mobile phone or bluetooth headset receives or transmits signals, the generated electromagnetic field is not hoarded by the conductive coating, so as not to affect the RF (radio frequency) performance and ESD (electrostatic discharge) performance of the mobile phone, that is, the wireless product achieves better receiving effect, has no noise, and has no influence on human body. When the shell of the communication product adopts the NCVM process, the antenna module of the product does not need to be designed with a return circuit to be grounded on the machine plate, so that the detection on the antenna module can be saved, and the cost is saved; meanwhile, the appearance of the product has stronger metal texture, so that the technological content of the product is improved, and the added value of the product is increased.

In addition, the NCVM can realize semi-transparency control while enabling plastics to have metal texture, namely, the NCVM has metal texture and light penetrability. When the product casing adopts the NCVM process, the design of the product is more rich and varied and the appearance is more beautiful and colorful by utilizing the light transmission or semi-light transmission characteristic.

And step S360, forming a covering layer on the non-conductive coating layer so as to form a composite film. The cover layer is opaque and different base colors can be selected as desired.

And step S370, attaching the composite film to the cambered glass layer through the optical adhesive layer under vacuum. And placing the composite film and the cambered surface glass layer in a vacuum box in a vacuum environment, descending the inner die of the vacuum cylinder by using the cylinder pressure of a machine, and completely pressing the composite film and the cambered surface glass layer which are placed on the lower die of the vacuum cylinder.

Test example

The mobile phone cover and the mobile phone of the invention are evaluated with the common mobile phone cover and the mobile phone in the sense of overall appearance texture and stereoscopic impression. The common mobile phone cover and the mobile phone are not provided with the gray level gradient layer.

The two sets of mobile phone covers and the mobile phones are selected for 100 users, and the mobile phone covers and the mobile phones with the gray level gradient layers are selected for 100 users, so that the mobile phone cover and the mobile phone are considered to have better overall texture and stronger stereoscopic impression. Especially, the mobile phone cover and the mobile phone are highly appreciated by users in terms of integral stereoscopic impression, and are considered to be far superior to the common mobile phone cover and the common mobile phone.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the present invention shall be covered thereby.

Claims

1. The utility model provides a three-dimensional cambered surface glass which characterized in that includes:

the cambered surface glass layer is 3D glass with arc-shaped middle and edges;

an explosion-proof diaphragm layer, a silk screen printing layer, a gray level gradient layer, a texture layer, a non-conductive coating layer and a covering layer are sequentially arranged on the inner arc surface side of the arc surface glass layer;

the gray level gradual change layer comprises a transparent area in the middle and two gray level gradual change areas symmetrically arranged on two sides of the transparent area, and the gray level of the gray level gradual change areas gradually increases from the edge close to one side of the transparent area to the edge on the other side of the gray level gradual change area.

2. The stereoscopic arc glass according to claim 1, wherein the gray scale of the edge of the gray scale gradual change region on one side close to the transparent region is 1-10%, and the gray scale of the edge of the gray scale gradual change region on the other side is 95-100%.

3. The stereoscopic arc glass of claim 1, wherein the area of the transparent region is 20% to 30% of the total area of the gradation gradient layer.

4. The solid cambered surface glass of claim 1, wherein the explosion-proof membrane layer is a PET layer, and the PET layer is adhered to the inner cambered surface of the cambered surface glass layer through optical cement.

5. A mobile phone cover, characterized in that the mobile phone cover is formed by the stereoscopic cambered glass of any one of claims 1-4.

6. A handset, characterized in that it comprises a handset cover as claimed in claim 5.

7. A method of manufacturing a mobile phone cover, comprising:

forming a gray level gradient layer on the silk screen layer;

forming a texture layer on the gray gradation layer;

forming a non-conductive coating layer on the texture layer;

under vacuum, the composite film is attached to the cambered surface glass layer through the optical adhesive layer;

the cambered surface glass layer is 3D glass with arc-shaped middle and edges;

8. The method of manufacturing a cell phone cover according to claim 7, wherein the gradation layer is printed in a dot pattern of 0.01mm or less.