CN212713733U

CN212713733U - Improved structure of mobile phone battery cover surface film

Info

Publication number: CN212713733U
Application number: CN202021433295.9U
Authority: CN
Inventors: 李晓哲; 丁磊; 闫森闯
Original assignee: Xiamen Yutong Photoelectric Co ltd
Current assignee: Xiamen Yutong Photoelectric Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-03-16
Anticipated expiration: 2030-07-20

Abstract

The utility model discloses a cell-phone battery cover surface film improves structure, first oxide layer, metal film layer and second oxide layer on the basement membrane layer and superpose the basement membrane layer in proper order including the basement membrane layer, wherein the basement membrane layer is the PET layer, the protection film of metal film layer for having metallic luster, the thickness on first oxide layer is thinner than the thickness on second oxide layer. The utility model discloses an indium tin alloy-layer has difficult fish tail, drops, the stable advantage of impedance, can also adjust the rete colour, demonstrates the metallic luster of different intensity.

Description

Improved structure of mobile phone battery cover surface film

Technical Field

The utility model belongs to the technical field of the magnetic control coating film technique and specifically relates to indicate a membrane improves structure for protecting cell-phone battery cover surface.

Background

With the vigorous development of the information age, people increasingly rely on using electronic products such as mobile phones for communication, however, most mobile phone shells are formed by plastic injection molding, the appearance is poor, and surface decoration processes such as surface spraying, non-conductive vacuum metallization and the like need to be further performed.

In the prior art, the protective film for the plastic shell of the mobile phone is formed by overlapping a bottom film layer 1 ' and a metal film layer 2 ', wherein the bottom film layer 1 ' is a PET layer, the metal film layer 2 ' is a protective film which is formed by magnetron sputtering on the PET layer and is non-conductive and has metal luster, the metal film layer 2 ' is an indium tin alloy layer, and the indium tin alloy layer is directly plated on the surface of the PET layer to obtain a metallization effect, and the following defects exist: because the indium-tin alloy is metal, the bonding strength with PET is low, and the indium-tin alloy is easy to fall off; the surface of the indium tin alloy layer is not provided with a protective layer, so that scratch is easily caused; the impedance of the protective film is unstable due to the two reasons, and the film layer cannot be ensured to be non-conductive, so that potential safety hazards are caused. Meanwhile, the film layer of the existing mobile phone shell is single in color and has no metallic luster.

Therefore, the applicant, in order to achieve the purpose of better practical value, develops and actually manufactures the mobile phone battery cover according to the abundant design development and practical manufacturing experience of the related industry for many years, and researches and improves the existing structure and defects.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a membrane improvement structure for protecting mobile phone batteries lid surface, it has the difficult fish tail of indium tin alloy layer, drops, the stable advantage of impedance, can also adjust the rete colour, demonstrates the metallic luster of different intensity.

To achieve the above object, the solution of the present invention is: the improved structure of the surface film of the mobile phone battery cover comprises an underlayer film, and a first oxide layer, a metal film layer and a second oxide layer which are sequentially superposed on the underlayer film, wherein the underlayer film is a PET (polyethylene terephthalate) layer, the metal film layer is a protective film with metal luster, and the thickness of the first oxide layer is smaller than that of the second oxide layer.

Further, the first oxide layer, the metal film layer and the second oxide layer are sequentially superposed on the bottom film layer through a magnetron sputtering coating process.

Further, the metal film layer is an indium tin alloy layer.

Further, the first oxide layer is titanium oxide or zirconium oxide.

Further, the thickness H of the first oxide layer is less than 0 < H < 20 nm.

Further, the second oxide layer is titanium oxide or zirconium oxide.

Further, the thickness h of the second oxide layer is 20 nm.

After the scheme is adopted, the utility model discloses a gain effect lies in: the utility model discloses be applied to mobile phone batteries lid surface, through the surface film that forms mobile phone batteries lid with the compounding of PET layer, first oxide layer, metal film layer and second oxide layer together, can avoid indium tin alloy layer to be oxidized, make its impedance stable, also weaken the cell-phone radiation, play the effect of protection indium tin alloy layer simultaneously, avoid indium tin alloy layer to be caused by the fish tail to drop;

because the thickness of first oxide layer is adjustable, and the thickness scope is between 0-20nm, the utility model discloses a thickness of adjusting first oxide layer changes indium tin alloy layer's transmissivity and reflectivity to change the intensity of rete metallic luster, with the purpose that the realization rete colour is adjustable.

Drawings

FIG. 1 is a schematic structural diagram of a surface film of a conventional mobile phone battery cover;

fig. 2 is a schematic structural diagram of the surface film of the mobile phone battery cover of the present invention.

Description of reference numerals: 1-a base film layer; 2-a first oxide layer; 3-a metal film layer; 4-second oxide layer.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The utility model provides a mobile phone battery cover surface film improves structure, including basement membrane layer 1 and superpose first oxide layer 2, metal film layer 3 and second oxide layer 4 on the basement membrane layer 1 in proper order, wherein basement membrane layer 1 is the PET layer, metal film layer 2 is the protection film that has metallic luster, metal film layer 2 is indium tin alloy layer, the thickness of first oxide layer 3 is thinner than the thickness of second oxide layer 4.

The scheme adopts a magnetron sputtering coating process to superpose and sputter the first oxide layer 2, the metal film layer 3 and the second oxide layer 4 on the PET bottom film layer 1 in sequence, compared with the prior art, the scheme is that the first oxide layer 2 is additionally arranged between the PET layer and the indium tin alloy layer, the oxide layer increases the adhesive force of the indium tin alloy layer, and the metal film layer 3 can be prevented from falling off from the PET layer; meanwhile, the second oxide layer 4 is additionally arranged on the indium tin alloy layer, so that the indium tin alloy layer can be prevented from being oxidized, the impedance is stable, the radiation of a mobile phone is weakened, the effect of protecting the indium tin alloy layer is achieved, the indium tin alloy layer is prevented from being scratched, the indium tin alloy layer is prevented from being broken down by current, and the safety of users is ensured.

The first oxide layer and the second oxide layer are titanium oxide or zirconium oxide, the thickness H of the first oxide layer 2 is less than 0 < H < 20nm, the thickness of the second oxide layer 4 is constant, and the thickness H is 20 nm;

because the thickness of the first oxide layer 2 is adjustable, and the thickness range is between 0-20nm, the utility model discloses a thickness of adjusting the first oxide layer 2 changes indium tin alloy layer's transmissivity and reflectivity to change the intensity of rete metallic luster, with the purpose that the rete colour is adjustable.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the design of the present application, and all equivalent changes made according to the design key of the present application fall within the protection scope of the present application.

Claims

1. The improved structure of the surface film of the mobile phone battery cover is characterized by comprising an underlayer film, and a first oxide layer, a metal film layer and a second oxide layer which are sequentially superposed on the underlayer film, wherein the underlayer film is a PET (polyethylene terephthalate) layer, the metal film layer is a protective film with metal luster, and the thickness of the first oxide layer is smaller than that of the second oxide layer.

2. The improved structure of the surface film of the mobile phone battery cover according to claim 1, wherein the first oxide layer, the metal film layer and the second oxide layer are sequentially stacked on the bottom film layer by a magnetron sputtering coating process.

3. The improved structure of the surface film of the cell cover of the mobile phone as claimed in claim 2, wherein the metal film layer is an indium tin alloy layer.

4. The improved structure of the surface film of the battery cover of the mobile phone according to claim 1, wherein the first oxide layer is titanium oxide or zirconium oxide.

5. The improved structure of the surface film of the mobile phone battery cover according to claim 4, wherein the thickness H of the first oxide layer is less than 0 < H < 20 nm.

6. The improved structure of the surface film of the battery cover of the mobile phone according to claim 1, wherein the second oxide layer is titanium oxide or zirconium oxide.

7. The improved structure of the surface film of the mobile phone battery cover of claim 6, wherein the thickness h of the second oxide layer is 20 nm.