CN214545337U

CN214545337U - Ultra-thin electromagnetic wave shielding film

Info

Publication number: CN214545337U
Application number: CN202120742319.7U
Authority: CN
Inventors: 何斌; 郑昭漫; 陈旋宗; 陈修志
Original assignee: Guangdong Price New Material Technology Co ltd
Current assignee: Guangdong Price New Material Technology Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-10-29
Anticipated expiration: 2031-04-13

Abstract

The utility model discloses an ultra-thin type electromagnetic wave shielding film, the utility model relates to an electromagnetic wave shielding film technical field, including the metal level, the upper and lower surface of metal level is provided with first insulation layer and second insulating layer respectively, the upper surface of second insulating layer is provided with the shielding layer, the lower surface on first insulation layer is provided with the conducting layer, the lower surface of conducting layer is provided with the protective layer. The device is provided with through the inside of mica sheet layer and holds the chamber, glass bead layer has evenly been laid to the inside that holds the chamber, glass bead layer and the space department packing that holds between the intracavity portion have ion water, under the triple effect of mica sheet and insulating film and insulating oil film layer, fine insulating action has been played this electromagnetic wave shielding film, the life of electromagnetic wave shielding film has been guaranteed, and under the effect of glass bead layer and ion water, fine high temperature resistance effect has been played this electromagnetic wave shielding film, the application range nature of this electromagnetic wave shielding film has been enlarged.

Description

Ultra-thin electromagnetic wave shielding film

Technical Field

The utility model relates to an electromagnetic wave shielding film technical field specifically is an ultra-thin type electromagnetic wave shielding film.

Background

An electromagnetic wave shielding film for protecting an electronic circuit from electromagnetic waves, the electromagnetic wave shielding film comprising a conductive adhesive layer and an insulating protective layer. Generally, an electromagnetic wave shielding film is produced by sequentially forming an insulating protective layer and a conductive adhesive layer on the surface of a base film. After the electromagnetic wave shielding film is bonded to the printed wiring substrate, the substrate film is removed before the reflow process. At this time, the substrate film serves as a transfer film, and the surface state thereof is transferred to the insulating protective layer. Before the electromagnetic wave shielding film is joined to the printed wiring board, the electromagnetic wave shielding film also functions as a protective film for protecting the insulating protective layer

However, the insulation and high temperature resistance of the existing electromagnetic wave shielding film are not ideal when in use, so that the service life of the electromagnetic wave shielding film is influenced when the electromagnetic wave shielding film is used for a long time, the effect of the electromagnetic wave shielding film is reduced, and the defect is not correspondingly improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides an ultra-thin type electromagnetic wave shielding film, solved present electromagnetic wave shielding film when using, its insulating nature and high temperature resistance can not be ideal, therefore when using for a long time, can influence its life's problem.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an ultrathin electromagnetic wave shielding film comprises a metal layer, wherein a first insulating layer and a second insulating layer are respectively arranged on the upper surface and the lower surface of the metal layer, a shielding layer is arranged on the upper surface of the second insulating layer, a conductive layer is arranged on the lower surface of the first insulating layer, and a protective layer is arranged on the lower surface of the conductive layer.

The first insulation layer comprises a mica sheet layer, insulation films are fixedly bonded to the upper surface and the lower surface of the mica sheet layer, one side, opposite to each other, of each insulation film is coated with an insulation oil film layer, a containing cavity is formed in the mica sheet layer, a glass bead layer is uniformly laid in the containing cavity, and ionized water is filled in a gap between the glass bead layer and the inside of the containing cavity.

Preferably, the insulating film is a rubber member, the insulating oil film layer is a polyurethane wave-absorbing member, and the first insulating layer and the second insulating layer are identical in structure.

Preferably, the thickness of the mica sheet layer is 0.2-0.4 mm, and the particle size of the glass bead layer is 0.12-0.22 mm.

Preferably, the metal layer comprises a zinc plating layer, a silver plating layer is arranged on the lower surface of the zinc plating layer, and a copper plating layer is arranged on the lower surface of the silver plating layer.

Preferably, the protective layer comprises a titanium layer and a toughening layer, a hardening crystallization layer is arranged between the titanium layer and the toughening layer, and a protective film is arranged on the lower surface of the toughening layer.

Preferably, the protective film is formed by bonding a PVC film and a PET film.

Advantageous effects

The utility model provides an ultra-thin electromagnetic wave shielding film. Compared with the prior art, the method has the following beneficial effects:

1. this ultra-thin type electromagnetic wave shielding film, the surface all fixes the bonding through the mica lamella has the insulating film, the one side that two insulating films carried on the back mutually all scribbles one deck insulating oil film layer, the inside of mica lamella is provided with holds the chamber, glass bead layer has evenly been laid to the inside that holds the chamber, glass bead layer and the space department packing that holds between the chamber inside have ion water, under the triple effect of mica lamella and insulating film and insulating oil film layer, fine insulating effect has been played to this electromagnetic wave shielding film, the life of electromagnetic wave shielding film has been guaranteed, and under the effect of glass bead layer and ion water, fine high temperature resistant effect has been played to this electromagnetic wave shielding film, thereby the application range nature of this electromagnetic wave shielding film has been enlarged.

2. This ultra-thin type electromagnetic wave shielding film is provided with one deck sclerosis crystallization layer through being provided with between titanium layer and the tempering layer, and the lower surface on tempering layer is provided with the one deck protection film, and when this electromagnetic wave shielding film received external collision or when scraping, the protective layer can play fine guard action to it, prevents that the surface of electromagnetic wave shielding film from being scraped badly, and the device structural design is reasonable, has improved the device's practicality.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic exploded view of the first insulating layer structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the mica sheet layer of the present invention;

fig. 4 is a schematic view of the metal layer structure according to the present invention;

fig. 5 is a schematic view of the protective layer structure according to the present invention.

In the figure: 1. a metal layer; 11. a zinc coating layer; 12. a silver coating layer; 13. plating a copper layer; 2. a first insulating layer; 21. a mica sheet layer; 22. an insulating film; 23. an insulating oil film layer; 24. a cavity; 25. a layer of glass beads; 26. ionized water; 3. a second insulating layer; 4. a shielding layer; 5. a conductive layer; 6. a protective layer; 61. a titanium layer; 62. a toughening layer; 63. hardening the crystalline layer; 64. and (5) protecting the film.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides two technical solutions:

example one

Referring to fig. 1, in an embodiment of the present invention, an ultra-thin electromagnetic wave shielding film includes a metal layer 1, a first insulating layer 2 and a second insulating layer 3 are respectively disposed on upper and lower surfaces of the metal layer 1, a shielding layer 4 is disposed on an upper surface of the second insulating layer 3, a conductive layer 5 is disposed on a lower surface of the first insulating layer 2, and a protective layer 6 is disposed on a lower surface of the conductive layer 5.

Referring to fig. 2-3, in the embodiment of the present invention, the first insulating layer 2 includes a mica sheet layer 21, insulating films 22 are fixedly bonded to the upper and lower surfaces of the mica sheet layer 21, an insulating oil film layer 23 is coated on each of the opposite surfaces of the two insulating films 22, a cavity 24 is disposed inside the mica sheet layer 21, a glass bead layer 25 is uniformly laid inside the cavity 24, ionized water 26 is filled in a gap between the glass bead layer 25 and the cavity 24, the insulating film 22 is a rubber member, the insulating oil film layer 23 is a polyurethane wave-absorbing member, the first insulating layer 2 and the second insulating layer 3 have the same structure, the thickness of the mica sheet layer 21 is 0.2mm, the particle size of the glass bead layer 25 is 0.12mm, the mica sheet layer 21 has good insulating property, because both rubber and polyurethane have good insulating property, the insulating film layer 22 and the insulating oil film layer 23 have an insulating effect again, the glass bead layer 25 has the characteristic of high temperature resistance, and then has the function of high temperature resistance under the coordination of the ionized water 26 at low temperature.

Referring to fig. 4, in the embodiment of the present invention, the metal layer 1 includes a galvanized layer 11, a silver layer 12 is disposed on a lower surface of the galvanized layer 11, and a copper layer 13 is disposed on a lower surface of the silver layer 12.

Referring to fig. 5, in the embodiment of the present invention, the protection layer 6 includes a titanium layer 61 and a toughened layer 62, a hardened crystalline layer 63 is disposed between the titanium layer 61 and the toughened layer 62, a protection film 64 is disposed on a lower surface of the toughened layer 62, the protection film 64 is formed by bonding a PVC film and a PET film, the titanium layer 61 and the toughened layer 62 have a strong hardness, the hardened crystalline layer 63 improves the hardness of the electromagnetic wave shielding film, and then the protection film 64 plays a role in protecting the electromagnetic wave shielding film again under the scratch resistance of the PVC film and the PET film.

Example two

Referring to fig. 2-3, in the embodiment of the present invention, the first insulating layer 2 includes a mica sheet layer 21, insulating films 22 are fixedly bonded to the upper and lower surfaces of the mica sheet layer 21, an insulating oil film layer 23 is coated on each of the opposite surfaces of the two insulating films 22, a cavity 24 is disposed inside the mica sheet layer 21, a glass bead layer 25 is uniformly laid inside the cavity 24, ionized water 26 is filled in a gap between the glass bead layer 25 and the cavity 24, the insulating film 22 is a rubber member, the insulating oil film layer 23 is a polyurethane wave-absorbing member, the first insulating layer 2 and the second insulating layer 3 have the same structure, the thickness of the mica sheet layer 21 is 0.4mm, the particle size of the glass bead layer 25 is 0.22mm, the mica sheet layer 21 has good insulating property, because both rubber and polyurethane have good insulating property, the insulating film layer 22 and the insulating oil film layer 23 have an insulating effect again, the glass bead layer 25 has the characteristic of high temperature resistance, and then has the function of high temperature resistance under the coordination of the ionized water 26 at low temperature.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An ultra-thin electromagnetic wave shielding film, comprising a metal layer (1), characterized in that: a first insulating layer (2) and a second insulating layer (3) are respectively arranged on the upper surface and the lower surface of the metal layer (1), a shielding layer (4) is arranged on the upper surface of the second insulating layer (3), a conducting layer (5) is arranged on the lower surface of the first insulating layer (2), and a protective layer (6) is arranged on the lower surface of the conducting layer (5);

the first insulation layer (2) comprises a mica sheet layer (21), insulation films (22) are fixedly bonded on the upper surface and the lower surface of the mica sheet layer (21), one insulation oil film layer (23) is coated on the opposite sides of the insulation films (22), a containing cavity (24) is formed in the mica sheet layer (21), a glass bead layer (25) is uniformly laid in the containing cavity (24), and ionized water (26) is filled in a gap between the glass bead layer (25) and the inside of the containing cavity (24).

2. The ultra-thin type electromagnetic wave-shielding film according to claim 1, wherein: the insulating film (22) is a rubber component, the insulating oil film layer (23) is a polyurethane wave-absorbing component, and the structures of the first insulating layer (2) and the second insulating layer (3) are the same.

3. The ultra-thin type electromagnetic wave-shielding film according to claim 1, wherein: the mica sheet layer (21) is 0.2-0.4 mm in thickness, and the glass bead layer (25) is 0.12-0.22 mm in particle size.

4. The ultra-thin type electromagnetic wave-shielding film according to claim 1, wherein: the metal layer (1) comprises a zinc coating (11), a silver coating (12) is arranged on the lower surface of the zinc coating (11), and a copper coating (13) is arranged on the lower surface of the silver coating (12).

5. The ultra-thin type electromagnetic wave-shielding film according to claim 1, wherein: the protective layer (6) comprises a titanium layer (61) and a toughening layer (62), a hardening crystallization layer (63) is arranged between the titanium layer (61) and the toughening layer (62), and a protective film (64) is arranged on the lower surface of the toughening layer (62).

6. The ultra-thin type electromagnetic wave-shielding film according to claim 5, wherein: the protective film (64) is formed by bonding a PVC film and a PET film.