CN211814241U - Protection sticker structure for mobile phone - Google Patents

Abstract

The utility model discloses a protective paste structure for mobile phone, which comprises an HC layer (1), a UV light curing material layer (2) and a paste layer (3) which are distributed from top to bottom in sequence; the HC layer (1) is matched and adhered to the upper surface of the UV light curing material layer (2), and the pasting layer (3) is matched and adhered to the lower surface of the UV light curing material layer (2). The utility model discloses a UV photocuring scribbles type substrate and replaces TPU/SRF substrate, can realize the processing procedure and simplify, and the yield improves, cost reduction's purpose.

Description

Protection sticker structure for mobile phone

Technical Field

The utility model belongs to the technical field of the cell-phone protection subsides, especially, relate to a cell-phone is with protection subsides structure.

Background

The mobile phone is frequently updated, the optical fingerprint under the screen gradually becomes the mainstream at present, but the optical fingerprint under the screen has special requirements (the luminous flux needs to be high enough to be identified) for the base material used by the protective sticker, so the base material in the mainstream in the market at present is SRF or TPU, but the two base materials have defects. The existing 2.5D and 3D protective paste for the finger print mobile phone under the screen is high in cost (base materials such as PET and TPU are all imported materials, and the appearance of domestic base materials cannot be met), meanwhile, the SRF is low in yield as a base material to be attached to a curved screen, and only can be used for a non-3D screen, and the TPU can be applied to 3D but has the defect of poor offset printing. In addition, the prior art has the defects that the SRF substrate needs to be subjected to die cutting at an inclined angle of 45 degrees, the product loss is large, meanwhile, the substrate is limited abroad, the cost is high, the thickness cannot be selected (only 80um), and the SRF substrate cannot be applied to an optical fingerprint screen under a 3D screen; although the TPU base material is not required to be subjected to die cutting at an angle of 45 degrees, the hardness of the base material is not enough, so that the offset printing of a finished product is poor, the use sense of a client is poor, the cost of the TPU base material is high, the appearance reject ratio is high, and the price of a final protective paste product is high.

Among them, TPU (thermoplastic polyurethanes) are known under the name of thermoplastic polyurethane elastomer rubbers. It is mainly divided into polyester type and polyether type, and HAs wide hardness range (60HA-85HD), wear resistance, oil resistance, transparency and good elasticity.

Among them, the SRF is named super-birefringence polyester film, has the advantages of good water resistance, high strength, transparency, heat resistance, elimination of polarized light, avoidance of light leakage, no distortion, and the like, and can be purchased directly in the market.

Wherein, PET is an abbreviation of polyethylene terephthalate, i.e. polyethylene terephthalate, formula: -OCH2-CH2OCOC6H4CO, a high polymer, is obtained by the dehydration condensation reaction of ethylene terephthalate. The ethylene terephthalate is obtained by esterification reaction of terephthalic acid and ethylene glycol. PET is a milky white or pale yellow, highly crystalline polymer with a smooth, glossy surface. The high-temperature-resistant and high-frequency-resistant composite material has excellent physical and mechanical properties in a wider temperature range, the long-term use temperature can reach 120 ℃, the electrical insulation property is excellent, even under high temperature and high frequency, the electrical property is still good, but the corona resistance is poor, and the creep resistance, the fatigue resistance, the friction resistance and the dimensional stability are good.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The to-be-solved technical problem of the utility model is to provide an adopt UV photocuring material to paste structure as the protection for the cell-phone of substrate layer, realize the processing procedure and simplify, the yield improves, cost reduction's purpose.

(II) technical scheme

In order to solve the above technical problems, the present invention provides a protective sticker structure for mobile phones, which comprises an HC layer, a UV light curing material layer and a sticker layer sequentially distributed from top to bottom; the HC layer is matched and adhered to the upper surface of the UV light curing material layer, and the pasting layer is matched and adhered to the lower surface of the UV light curing material layer.

Wherein, the UV light curing material layer is a UV curing resin layer.

Wherein, the adhesive layer is a silica gel layer.

Wherein, the material of silica gel layer is organosilicon pressure sensitive adhesive.

Wherein, the material of the sticking layer is OCA.

Wherein, the top surface of HC layer is also adhered with the protective film.

Wherein, the protective film is a silica gel protective film.

Wherein, the protection film is an acrylic protection film.

Wherein, the bottom surface of the sticking layer is also provided with a release film.

Wherein the release film is a fluorine release film or a non-silicon non-fluorine release film.

(III) advantageous effects

Compared with the prior art, the utility model forms a film with low phase difference, low internal stress and high hardness by coating and processing the UV light-cured material, thereby realizing the substitution of TPU/SRF base material; oblique die cutting is not needed, so that the loss of the SRF applied to the mobile phone with the finger print under the screen is greatly reduced; meanwhile, the characteristics of low stress and high hardness can be used for replacing TPU (thermoplastic polyurethane) by a 3D screen, and the screen cannot rebound; wherein, the upper and lower surfaces of the HC surface protective film and the release film are respectively adhered for protection. The utility model discloses a UV photocuring scribbles type substrate and replaces TPU/SRF substrate, can realize the processing procedure and simplify, and the yield improves, cost reduction's purpose.

Drawings

Fig. 1 is a schematic structural diagram of the protection sticker structure for mobile phone of the present invention.

Description of reference numerals: 1. an HC layer; 2. a layer of UV light curable material; 3. a bonding layer; 4. a protective film; 5. and (4) a release film.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The structure of the protective sticker structure for mobile phone of the utility model is shown in fig. 1, and the protective sticker structure for mobile phone comprises an HC layer 1, a UV light curing material layer 2 and a sticking layer 3 which are distributed in sequence from top to bottom; the HC layer 1 is matched and adhered to the upper surface of the UV light curing material layer 2, and the adhesive layer 3 is matched and adhered to the lower surface of the UV light curing material layer 2. Wherein HC is HARD COATING, i.e., a hardened film. Wherein, UV is the abbreviation of English Ultraviolet Rays, namely Ultraviolet Rays, the wavelength range of the Ultraviolet Rays is 100-400 nm, and the Ultraviolet Rays are electromagnetic waves between X Rays and visible light.

In this embodiment, the UV light curing material layer 2 is a UV cured resin layer. Among them, the UV curable resin is directly commercially available.

In this embodiment, the adhesive layer 3 is a silica gel layer, and the silica gel layer is made of an organic silicon pressure sensitive adhesive. Wherein, the material of the sticking layer 3 can also be OCA; OCA is acrylic pressure-sensitive adhesive. In addition, OCA is also optical cement, namely optical clear adhesive, which is divided into liquid and solid; they all have the characteristics of high transmittance (more than 99 percent), good refraction, corrosion resistance, high and low temperature resistance, yellowing resistance and the like.

As shown in fig. 1, in this embodiment, a protection film 4 is further bonded to the top surface of the HC layer 1 for protection and shaping. Wherein, the protective film 4 is a silica gel protective film. In addition, the protective film 4 may also be an acryl protective film.

As shown in fig. 1, in this embodiment, a release film 5 is further disposed on the bottom surface of the adhesive layer 3, and the release film 5 is a fluorine release film or a non-silicon non-fluorine release film for protecting and maintaining the bottom adhesiveness of the protective sticker structure for mobile phone. Wherein, the release film is a film with separability on the surface, and the release film does not have viscosity or slight viscosity after being contacted with a specific material under a limited condition; so that the product can protect the adhesive layer 3 and keep the viscosity when not used; when the product is used, the release film 5 can be easily torn off, and the mobile phone can be attached by using the viscosity of the adhesive layer 3. In addition, the fluorine release film is also called fluorine plastic release film, which takes PET as a base material, and a release agent is coated on the surface of the base material; the non-silicon non-fluorine release film takes a non-silicon non-fluorine material as a base material, and a release agent is coated on the surface of the non-silicon non-fluorine release film, but the non-silicon non-fluorine material is very high temperature resistant, so that the non-silicon non-fluorine release film can be well stored even if the temperature is very high; both release films are available by direct commercial purchase.

The utility model forms a film with low phase difference, low internal stress and high hardness by coating and processing the UV light-cured material, thereby realizing the substitution of TPU/SRF base material; oblique die cutting is not needed, so that the loss of the SRF applied to the mobile phone with the finger print under the screen is greatly reduced; meanwhile, the characteristics of low stress and high hardness can be used for replacing TPU (thermoplastic polyurethane) by a 3D screen, and the screen cannot rebound. Then HC and silica gel or high-viscosity OCA are respectively coated on two surfaces of the film, and finally a release film and an HC surface protection film are attached. The utility model discloses a UV photocuring scribbles type substrate and replaces TPU/SRF substrate, can realize the processing procedure and simplify, and the yield improves, cost reduction's purpose.

In the production of the product, the UV photocuring material layer 2 is formed by coating, curing and film-forming a photocuring material and is used for replacing the existing base materials (TPU/SRF and the like), and the photocuring material has the characteristics of good appearance, low phase difference, low stress and adjustable hardness after film forming, can completely replace the base materials of TPU/SRF and the like, realizes structure optimization and cost reduction, and breaks through the situation that the existing optical base materials are restricted by people; then, HC is coated on the top surface of the UV light curing material layer 2 to form an HC layer 1, and silica gel or high-viscosity OCA is coated on the bottom surface of the UV light curing material layer 2 to form an adhesive layer 3; finally, a protective film 4 is attached to the top surface of the HC layer, and a release film 5 is attached to the bottom surface of the adhesive layer 3.

The UV light curing material is low in phase difference after being coated into a film, and the back-end manufacturing process does not need oblique die cutting (SRF needs die cutting at an angle of 45 degrees), so that the loss is greatly reduced; moreover, after the UV light-cured material (which needs special structural design) is coated to form a film, low stress (relatively large SRF stress) can be realized, the adhesion to a curved glass screen is improved, and the reject ratio is greatly reduced; secondly, the UV light-cured material can realize higher hardness to meet the requirement of a terminal on offset printing of products (TPU base materials are soft, and offset printing is poor); in addition, the UV light curing material is coated to form a film, so that the appearance is good (the TPU apparent defect rate is high), and the defect rate can be reduced; compared with the existing SRF/TPU base material, the UV photocuring material coated into a film can realize the localization of an industrial chain and change the situation that the high-end base material for the mobile phone protection sticker is restricted by foreign countries.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a protection sticker structure for cell-phone which characterized in that: the protective sticker structure for the mobile phone comprises an HC layer (1), a UV light curing material layer (2) and a sticking layer (3) which are sequentially distributed from top to bottom; the HC layer (1) is matched and adhered to the upper surface of the UV light curing material layer (2), and the pasting layer (3) is matched and adhered to the lower surface of the UV light curing material layer (2).

2. The protection sticker structure for mobile phone according to claim 1, wherein: the UV light curing material layer (2) is a UV curing resin layer.

3. The protection sticker structure for mobile phone according to claim 1, wherein: the adhesive layer (3) is a silica gel layer.

4. The protection sticker structure for mobile phone of claim 3, wherein: the silica gel layer is made of organic silicon pressure-sensitive adhesive.

5. The protection sticker structure for mobile phone according to claim 1, wherein: the material of the sticking layer (3) is OCA.

6. The structure of a mobile phone protector according to any one of claims 1 to 5, characterized in that: and a protective film (4) is attached to the top surface of the HC layer (1).

7. The protection sticker structure for mobile phone of claim 6, wherein: the protective film (4) is a silica gel protective film.

8. The protection sticker structure for mobile phone of claim 6, wherein: the protective film (4) is an acrylic protective film.

9. The protection sticker structure for mobile phone of claim 6, wherein: the bottom surface of the sticking layer (3) is provided with a release film (5).

10. The protection sticker structure for mobile phone of claim 9, wherein: the release film (5) is a fluorine release film or a non-silicon non-fluorine release film.

Images