CN111816808A

CN111816808A - Battery cover, shell assembly and electronic equipment

Info

Publication number: CN111816808A
Application number: CN202010667457.3A
Authority: CN
Inventors: 陈颖
Original assignee: Realme Chongqing Mobile Communications Co Ltd
Current assignee: Realme Chongqing Mobile Communications Co Ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-10-23
Anticipated expiration: 2040-07-10
Also published as: CN111816808B

Abstract

The application discloses a battery cover, a shell assembly applying the battery cover and electronic equipment applying the shell assembly. The battery cover comprises a transparent substrate, a first appearance layer, a second appearance layer and a cover bottom layer, wherein the transparent substrate is provided with an inner surface and an outer surface which are arranged oppositely; the first appearance layer is arranged on the inner surface of the transparent substrate in a laminated manner; the second appearance layer is laminated on the surface of the first appearance layer, which is back to the transparent substrate; the cover bottom layer is arranged on the surface of the second appearance layer, which is back to the first appearance layer; wherein the first appearance layer comprises a first texture layer and the second appearance layer comprises a second texture layer. The technical scheme of this application can enrich electronic equipment's outward appearance effect, avoids the homogenization of outward appearance effect.

Description

Battery cover, shell assembly and electronic equipment

Technical Field

The present disclosure relates to electronic devices, and particularly to a battery cover, a housing assembly using the battery cover, and an electronic device using the housing assembly.

Background

With the rapid development of electronic devices (such as mobile phones, tablet computers, and the like), the appearance effect of the battery cover of the electronic device is gradually increased. In the related art, the battery cover generally exhibits various texture effects depending on the texture layer therein. However, with the deep development of various texture patterns on the texture layer, the design difficulty of new texture patterns is gradually increased, so that the uniqueness of the appearance effect of the electronic device is difficult to show, and the homogenization degree is gradually serious.

Disclosure of Invention

The main objective of the present application is to provide a battery cover, a housing assembly using the battery cover, and an electronic device using the housing assembly, which aim to enrich the appearance effect of the electronic device and avoid the homogenization of the appearance effect.

An embodiment of the present application provides a battery cover, including:

a transparent substrate having an inner surface and an outer surface disposed in a back-to-back arrangement;

a first appearance layer laminated on an inner surface of the transparent substrate;

the second appearance layer is laminated on the surface, back to the transparent substrate, of the first appearance layer; and

the cover bottom layer is arranged on the surface, back to the first appearance layer, of the second appearance layer;

wherein the first appearance layer comprises a first texture layer and the second appearance layer comprises a second texture layer.

An embodiment of the present application further provides a housing assembly, which includes a battery cover, the battery cover including:

An embodiment of the present application also provides an electronic device, including:

a housing assembly;

the display screen assembly is covered with the shell assembly and encloses to form an accommodating space; and

the mainboard is arranged in the accommodating space and is electrically connected with the display screen assembly;

the housing assembly includes a battery cover, the battery cover including:

According to the technical scheme, two texture layers and one cover bottom layer are sequentially stacked on the inner side of the transparent base material. Therefore, the composite appearance effect of various texture effects can be realized on the battery cover by utilizing the mutual superposition and the mutual correspondence of various texture patterns on the two texture layers and the reverse lining effect of the bottom layer of the cover; in addition, the appearance effect has good layering and stereoscopic impression, so that the homogenization problem caused by deep development of various texture patterns on a single texture layer is avoided, the appearance effect of the electronic equipment is enriched, and the homogenization of the appearance effect is also avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be transformed according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a battery cover according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of another embodiment of a battery cover according to the present application;

fig. 3 is a schematic structural diagram of a battery cover according to still another embodiment of the present disclosure.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Battery cover	31	First texture layer
10	Transparent substrate	33	The first electroplated layer
				11a	A first interface layer	35	First substrate layer
13a	Anti-ultraviolet layer	50	Second appearance layer
				15a	Organic glass layer	51	Second texture layer
17a	Hardening layer	53	Second plating layer
				11b	The second interface layer	55	Second substrate layer
13b	Adhesive layer	57	Intermediate layer
				15b	Glass layer	70	Cover bottom layer
17b	Anti-fouling layer	90	Connecting layer
				30	First appearance layer

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

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

In the related art, the battery cover generally exhibits various texture effects depending on the texture layer therein. However, with the deep development of various texture patterns on the texture layer, the design difficulty of new texture patterns is gradually increased, so that the uniqueness of the appearance effect of the electronic device is difficult to show, and the homogenization degree is gradually serious.

In view of the above technical problems, the present application provides a battery cover 100, where the battery cover 100 is applied to an electronic device, and can enrich an appearance effect of the electronic device and avoid homogenization of the appearance effect.

It is understood that the electronic device may be, but is not limited to, a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), an e-book reader, an MP3 (motion Picture Experts Group Audio Layer III) player, an MP4 (motion Picture Experts Group Audio Layer IV) player, a notebook computer, a car computer, a set-top box, a smart tv, a wearable device, a navigator, a handheld game console, etc.

The specific structure of the battery cover 100 of the present application will be described below in specific embodiments:

as shown in fig. 1, in an embodiment of the present invention, a battery cover 100 includes a transparent substrate 10, a first appearance layer 30, a second appearance layer 50, and a cover bottom layer 70.

Specifically, the transparent substrate 10 has an inner surface and an outer surface disposed oppositely; the inner surface of the transparent substrate 10 is a surface of the transparent substrate 10 facing the internal space of the electronic device, and the outer surface of the transparent substrate 10 is a surface of the transparent substrate 10 facing the external space of the electronic device.

The first appearance layer 30 is stacked on the inner surface of the transparent substrate 10, the second appearance layer 50 is stacked on the surface of the first appearance layer 30 opposite to the transparent substrate 10, and the cover bottom layer 70 is disposed on the surface of the second appearance layer 50 opposite to the first appearance layer 30; that is, the first design layer 30, the second design layer 50, and the cover bottom layer 70 are sequentially stacked on the inner surface of the transparent base material 10; wherein the first appearance layer 30 comprises a first texture layer 31 and the second appearance layer 50 comprises a second texture layer 51.

At this time, it can be understood that, in the technical solution of the present embodiment, two texture layers and one cover bottom layer 70 are sequentially stacked on the inner side of the transparent base material 10. Thus, the battery cover 100 can realize the composite appearance effect of various texture effects by utilizing the mutual superposition and cross-correspondence of various texture patterns on the two texture layers and the reverse lining effect of the cover bottom layer 70; in addition, the appearance effect has good layering and stereoscopic impression, so that the homogenization problem caused by deep development of various texture patterns on a single texture layer is avoided, the appearance effect of the electronic equipment is enriched, and the homogenization of the appearance effect is also avoided.

It should be noted that, for the transparent substrate 10, there are at least two options:

(1) in the embodiment shown in fig. 1, the transparent substrate 10 includes a first interface layer 11a, an ultraviolet-resistant layer 13a, an organic glass layer 15a, and a hardening layer 17a, which are sequentially stacked, and the first appearance layer 30 is stacked on a surface of the first interface layer 11a facing away from the ultraviolet-resistant layer 13 a.

Wherein the hardened layer 17a is a thin film layer having a hardness of 3H to 4H and a water droplet angle of more than 100 ° at the outermost side of the battery cover 100, and has good scratch resistance, stain resistance and good touch as an exposed layer; the hardened layer 17a can be obtained by spraying surface paint and then curing;

the organic glass layer 15a, also called a polymethyl methacrylate (PMMA) layer, has high hardness, high transmittance, good scratch resistance, and good strength;

the ultraviolet resistance layer 13a has a blocking effect on ultraviolet rays having a wavelength of less than 380nm (i.e., the transmittance of ultraviolet rays having a wavelength of less than 380nm is less than 8%), so that the aging of the battery cover 100 caused by ultraviolet rays in the environment can be effectively improved;

the first interface layer 11a has excellent affinity with the UV curable adhesive (also called UV adhesive, shadowless adhesive, or photosensitive adhesive), ink, and plating layer, and can provide good adhesion to the first appearance layer 30 thereon, thereby improving the stability of the first appearance layer 30. In practical applications, the first interface layer 11a may have various options; for example, the first interface layer 11a is a polycarbonate layer (also referred to as a PC layer).

(2) In the embodiment shown in fig. 2, the transparent substrate 10 includes a second interface layer 11b, an adhesive layer 13b, a glass layer 15b, and an anti-stain layer 17b, which are laminated in this order, and the first design layer 30 is laminated on a surface of the second interface layer 11b facing away from the adhesive layer 13 b.

Wherein the anti-stain layer 17b is a thin film layer having a hardness of 4H and a water drop angle of more than 105 ° at the outermost side of the battery cover 100, and has good scratch resistance, anti-stain property, and good touch as an exposed layer; the anti-fouling layer 17b can adopt an AS film or an AF film, which is a film obtained by depositing an organic fluoride material on the surface of a base material by a vacuum coating technology, so that the surface of the base material has the functions of water resistance, oil resistance, scratch resistance, fingerprint resistance, pollution prevention, easy cleaning and the like;

a glass layer 15b having high hardness, high transmittance, good scratch resistance, and good strength;

the adhesive layer 13b has good adhesive force with both the glass layer 15b and the second interface layer 11b, and can provide good adhesive force for the arrangement of the second interface layer 11b on the glass layer 15b, so that the stability of the second interface layer 11b is improved, and the stability of other film layers subsequently made on the second interface layer 11b is improved; in practical applications, the adhesive layer 13b may have various options; for example, the adhesive layer 13b is an optical adhesive layer (also referred to as OCA layer);

the second interface layer 11b has excellent affinity with the UV curable adhesive (also called UV adhesive, shadowless adhesive, or photosensitive adhesive), ink, and plating layer, and can provide good adhesion to the first appearance layer 30 thereon, thereby improving the stability of the first appearance layer 30. In practical applications, the second interface layer 11b may have various options; for example, the second interface layer 11b is a polyethylene terephthalate layer (also referred to as a PET layer).

It can be understood that the two transparent substrates 10 have high hardness, high transmittance, good scratch resistance and good strength, thereby being beneficial to the superposition and presentation of the appearance effects of the first appearance layer 30 and the second appearance layer 50.

On the other hand, for the cover bottom layer 70, the following arrangement is made:

as shown in fig. 1, a cover-bottom ink (e.g., black ink, white ink, etc.) is printed on a surface of the second appearance layer 50 opposite to the first appearance layer 30 to form a cover-bottom layer 70. The cover substrate 70 has a transmittance of not more than 1% to shield components in the internal space of the electronic device. Also, the cover bottom layer 70 may be mutually set against the first appearance layer 30 and the second appearance layer 50, thereby making the appearance color of the battery cover 100 more full. At the same time, the cover bottom layer 70 may also function to protect the first appearance layer 30 and the second appearance layer 50.

Specifically, the bottom cover layer 70 may be formed of thermosetting Polyurethane (PU), and may have a thickness of 10 μm to 30 μm and an elongation at break of 50% to 150%. Thus, the bonding force between the cover bottom layer 70 and the second appearance layer 50 is good, and the cover bottom layer 70 is not easily cracked.

Furthermore, it is understood that the cover substrate 70 may also be obtained after multiple printing and multiple curing processes, so as to improve the performance of the cover substrate 70.

Also, it is understood that the first texture layer 31 and the second texture layer 51 may be formed by transferring an ultraviolet light curing glue (also called UV glue, shadowless glue, photosensitive glue).

The first appearance layer 30 and the second appearance layer 50 will be described below:

as shown in fig. 1, in an embodiment of the battery cover 100 of the present application, the first appearance layer 30 further includes a first electroplated layer 33, and the first electroplated layer 33 is stacked on a surface of the first texture layer 31 opposite to the transparent substrate 10. At this time, a good light and shadow effect can be formed on the outer surface of the battery cover 100 by the refraction and reflection of the first plating layer 33 to light, thereby contributing to the improvement of the stereoscopic impression and the layering sense of the appearance effect of the battery cover 100. In addition, the first plating layer 33 can also protect the first texture layer 31, and prevent the second appearance layer 50 from damaging the first texture layer 31 during installation.

The first plating layer 33 is an optical plating film formed on the surface of the first texture layer 31 opposite to the transparent substrate 10 by a plating process (e.g., an evaporation plating process, a magnetron sputtering plating process, etc.), and the target material thereof may be at least one selected from silicon, titanium, indium, silicon oxide, titanium oxide, and indium oxide. In addition, the optical coating film can be of a single-layer structure or a multi-layer structure, and the targets of different layers can be the same or different.

Further, the second appearance layer 50 further includes a second plating layer 53, and the second plating layer 53 is stacked on the surface of the second texture layer 51 opposite to the first appearance layer 30. At this time, a better light and shadow effect can be formed on the outer surface of the battery cover 100 by the refraction and reflection of the second plating layer 53 to light, thereby further improving the stereoscopic impression and the layering impression of the appearance effect of the battery cover 100. In addition, more importantly, a laminated structure of a double-layer texture layer and a double-layer electroplated layer is formed inside the battery cover 100 at the moment, and the two layers are mutually overlapped and in cross correspondence, so that the appearance effect of being more dazzlingly and expressive can be presented on the outer surface of the battery cover 100, and the appearance expressive force of the product is further improved. On the other hand, the second plating layer 53 can also protect the second texture layer 51, and prevent the second texture layer 51 from being damaged by the cover bottom layer 70 during installation.

The second plating layer 53 is an optical plating film formed on the surface of the second texture layer 51 opposite to the transparent substrate 10 by a plating process (e.g., an evaporation plating process, a magnetron sputtering plating process, etc.), and the target material thereof may be at least one selected from silicon, titanium, indium, silicon oxide, titanium oxide, and indium oxide. In addition, the optical coating film can be of a single-layer structure or a multi-layer structure, and the targets of different layers can be the same or different.

In the embodiment shown in fig. 1, the first texture layer 31 is laminated on the surface of the first interface layer 11a facing away from the ultraviolet-resistant layer 13a, and the first plating layer 33 is laminated on the surface of the first texture layer 31 facing away from the first interface layer 11 a. In this case, when the second texture layer 51 is formed by directly performing the transfer step on the surface of the first plating layer 33 opposite to the first texture layer 31, the second texture layer 51 has a problem that the adhesion to the first plating layer 33 is low and the second texture layer is easily peeled off. To this end, the intermediate layer 57 is further provided in the embodiment, so that the intermediate layer 57 is used for bonding the first electroplated layer 33 and the second textured layer 51, thereby solving the problems that the second textured layer 51 has low adhesive force on the first electroplated layer 33 and is easy to fall off, improving the stability of the second textured layer 51, improving the stability of other subsequent films on the second textured layer 51, and further improving the durability of the appearance effect of the battery cover 100. The specific scheme is as follows:

the second design layer 50 further includes an intermediate layer 57, the intermediate layer 57 being laminated on a surface of the first plating layer 33 facing away from the first texture layer 31, and the second texture layer 51 being laminated on a surface of the intermediate layer 57 facing away from the first plating layer 33.

Further, the intermediate layer 57 is a varnish layer, a colored semi-permeable ink layer or a colored semi-permeable paint layer. The gloss oil layer can solve the problem of the adhesion, has good transmittance, and can contribute to the superposition and presentation of the appearance effects of the first appearance layer 30 and the second appearance layer 50. The colored semi-permeable ink layer and the colored semi-permeable paint layer can provide richer colors for the appearance effect of the battery cover 100 while solving the problem of the adhesion, so that the appearance expressive force of the outer surface of the battery cover 100 is improved.

Further, the thickness of the intermediate layer 57 is defined as D, and the condition D is less than or equal to 10 μm. That is, the thickness D of the intermediate layer 57 is controlled within a range not exceeding 10 μm.

When the thickness D of the intermediate layer 57 exceeds 10 μm, the thickness D of the intermediate layer 57 becomes too thick, and in this case, uniformity of the thickness of the intermediate layer 57 is difficult to ensure, and a phenomenon of thickness unevenness is likely to occur, which is likely to cause a failure in appearance of the second appearance layer 50.

Specifically, the thickness D of the intermediate layer 57 may be 0.1 μm, 0.2 μm, 1 μm, 1.5 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, or the like.

In addition, it should be further noted that, in other embodiments of the present application, in order to further enrich the appearance effect of the electronic device and avoid homogenization of the appearance effect, the battery cover 100 may further perform the following configuration:

the battery cover 100 includes a plurality of the second appearance layers 50, and the plurality of the second appearance layers 50 are sequentially stacked on a surface of the first appearance layer 30 facing away from the transparent substrate 10. Moreover, each second appearance layer 50 can be configured according to the foregoing embodiments, and details are not repeated herein.

As shown in fig. 3, in an embodiment of the battery cover 100 of the present application, the first appearance layer 30 further includes a first substrate layer 35, the first substrate layer 35 is stacked on the inner surface of the transparent substrate 10, and the first texture layer 31 is stacked on the surface of the first substrate layer 35 opposite to the transparent substrate 10.

The first substrate layer 35 has excellent affinity with ultraviolet curing glue (also called UV glue, shadowless glue, photosensitive glue), ink and an electroplated layer, and can provide good adhesion for the first texture layer 31 thereon, thereby improving the stability of the first texture layer 31. In practice, first substrate layer 35 may have a variety of options; for example, first substrate layer 35 is a polyethylene terephthalate layer (also referred to as a PET layer).

At this time, due to the arrangement of the first substrate layer 35, the first appearance layer 30 can be independently manufactured (i.e., the first texture layer 31 and the first electroplated layer 33 are prepared on the first substrate layer 35), and then the whole first appearance layer 30 is attached to the transparent substrate 10, so that the process is simpler, more convenient and more reliable.

In this case, the transparent substrate 10 may be composed of the adhesive layer 13b, the glass layer 15b, and the stain-resistant layer 17b in the example shown in fig. 2, and the first backing layer 35 is bonded to the surface of the adhesive layer 13b opposite to the glass layer 15 b.

Further, the second appearance layer 50 further includes a second substrate layer 55, the second substrate layer 55 is stacked on the surface of the first appearance layer 30 opposite to the transparent substrate 10, and the second texture layer 51 is stacked on the surface of the second substrate layer 55 opposite to the first appearance layer 30.

The second substrate layer 55 has excellent affinity with ultraviolet curing glue (also called UV glue, shadowless glue, photosensitive glue), ink and plating layer, and can provide good adhesion for the second texture layer 51 thereon, thereby improving the stability of the second texture layer 51. In practice, second substrate layer 55 may have a variety of options; for example, second substrate layer 55 is a polyethylene terephthalate layer (also referred to as a PET layer).

At this time, due to the arrangement of the second substrate layer 55, the second appearance layer 50 can be independently manufactured (i.e., the second texture layer 51 and the second electroplated layer 53 are prepared on the second substrate layer 55), and then the whole second appearance layer 50 is attached to the first appearance layer 30, so that the process is simpler, more convenient and more reliable.

It should be noted that, at this time, a connection layer 90 may be further added between the first appearance layer 30 and the second appearance layer 50 to provide good adhesion for the second substrate layer 55 disposed on the first appearance layer 30, so as to improve the stability of the second substrate layer 55 and improve the stability of the second appearance layer 50. In practice, the connecting layer 90 may have a variety of options; for example, the connecting layer 90 is an optical adhesive layer (also referred to as an OCA layer).

The present application also proposes a housing assembly, which includes the battery cover 100 as described above, and the specific structure of the battery cover 100 is detailed in the foregoing embodiments. Since the housing assembly adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by all the technical solutions of all the embodiments are achieved, and no further description is given here.

The present application also proposes an electronic device, which includes the housing assembly as described above, and the specific structure of the housing assembly is detailed in the foregoing embodiments. Since the electronic device adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by all the technical solutions of all the embodiments are achieved, and no further description is given here. Wherein the electronic device further comprises:

the mainboard is arranged in the accommodating space and is electrically connected with the display screen assembly.

The above description is only an alternative embodiment of the present application, and not intended to limit the scope of the present application, and all equivalent modifications made by the present specification and drawings or directly/indirectly applied to other related technical fields under the inventive concept of the present application are included in the scope of the present application.

Claims

1. A battery cover applied to an electronic device, the battery cover comprising:

2. The battery cover of claim 1, wherein the first appearance layer further comprises a first electroplated layer disposed on a surface of the first textured layer facing away from the transparent substrate.

3. The battery cover of claim 2, wherein the second appearance layer further comprises a second electroplated layer laminated to a surface of the second texture layer facing away from the first appearance layer.

4. The battery cover of claim 3, wherein the second appearance layer further comprises an intermediate layer laminated to a surface of the first electroplated layer facing away from the first textured layer, and the second texture layer is laminated to a surface of the intermediate layer facing away from the first electroplated layer.

5. The battery cover of claim 4, wherein the intermediate layer is a varnish layer, a colored semi-permeable ink layer, or a colored semi-permeable paint layer.

6. The battery cover according to claim 4, wherein the thickness of the intermediate layer is defined as D, and the condition D ≦ 10 μm is satisfied.

7. The battery cover of claim 1, wherein the transparent substrate includes a first interface layer, a uv-resistant layer, an organic glass layer, and a hard layer, which are sequentially stacked, and the first appearance layer is stacked on a surface of the first interface layer opposite to the uv-resistant layer;

or the transparent base material comprises a second interface layer, an adhesive layer, a glass layer and an anti-fouling layer which are sequentially stacked, and the first appearance is stacked on the surface of the second interface layer, which is opposite to the adhesive layer.

8. The battery cover according to any of claims 1 to 7, wherein the battery cover comprises a plurality of the second appearance layers, and the plurality of the second appearance layers are sequentially laminated on a surface of the first appearance layer facing away from the transparent substrate.

9. The battery cover of any of claims 1-7, wherein the first appearance layer further comprises a first substrate layer laminated to an inner surface of the transparent substrate, and wherein the first texture layer is laminated to a surface of the first substrate layer facing away from the transparent substrate.

10. The battery cover of any of claims 1-7, wherein the second appearance layer further comprises a second substrate layer laminated to a surface of the first appearance layer facing away from the transparent substrate, and wherein the second texture layer is laminated to a surface of the second substrate layer facing away from the first appearance layer.

11. A housing assembly comprising a battery cover as claimed in any one of claims 1 to 10.

12. An electronic device, comprising:

a housing assembly, the housing assembly being as in claim 11;