KR101738493B1 - Anti-scattering film - Google Patents

Abstract

The anti-scattering film according to the present invention is applied to a display made of glass to improve the strength of the anti-scattering film, and the color of the visible light region can be realized by including a proper amount of pigment. Further, by depositing the nonconductive vacuum evaporation inorganic material, metal luster can be realized without using a metal material, heavy weight which is a disadvantage of a metal material can be reduced, and raw material cost can be reduced. Further, it is possible to manufacture a shatterproof film having a thin thickness even by laminating the layers having various functions, and the shatterproof film can be usefully used in the production of a display having a small, thin film, or the like.

Description

Anti-scattering film {ANTI-SCATTERING FILM}

The present invention relates to a functional anti-scattering film capable of realizing hue of a visible light region and realizing metallic luster.

2. Description of the Related Art In the field of information communication technology, display devices have been developed in various forms in consideration of the purpose of use, portability, convenience, and the like. Examples of typical displays include indoor and outdoor video displays, portable personal terminals, vehicle navigation, various types of remote controls, unmanned automotive driving displays, drones, and the like.

Consumers are focusing on design according to the purpose of the display, so various display designs are being developed. In recent years, designs using metal materials have attracted attention. However, metal materials have disadvantages such as heavy weight and increased fabrication costs.

In order to compensate for this, displays using glass instead of metal materials are being developed. Glass has the advantages of low production cost and low weight compared to metal materials. However, glass has a fatal disadvantage that the strength is low, and a method of increasing the strength of a glass-made display and further applying a shatterproof film capable of realizing color for improving the design are being studied.

For example, Korean Patent Laid-Open Publication No. 10-2014-0110325 discloses a light-scattering film comprising a hard coat layer containing a transparent film and an azo-based dye, Korean Patent Laid-open No. 10-2015-0096860 discloses a light- Discloses a hard coat layer comprising a colored dye having a maximum absorption at 700 nm and a transparent conductive film comprising the same. However, the patents disclose only the properties related to the transparency, durability, and the like of the film, but disclose nothing about the design, especially the various color implementations.

Therefore, a plurality of substrate films are used to provide various designs for a display made of glass, which is the main cause of the thickening of the film, and is a technology that is in reverse trend to the thin display of a recent trend.

Korean Patent Publication No. 10-2014-0110325 Korean Patent Publication No. 10-2015-0096860

Accordingly, it is an object of the present invention to provide a functional shatterproof film which can be laminated on a glass with a thin thickness to increase the strength thereof, and can realize a color of a visible light region and a metallic luster.

In order to achieve the above object, the present invention provides an optical transparent adhesive layer, A base layer; A primer layer; A mold pattern layer; An inorganic vapor deposition layer; And a light-shielding printing layer laminated in this order, wherein the inorganic vapor deposition layer contains a non-conductive vacuum metalizing (NCVM) inorganic substance.

The anti-scattering film according to the present invention is applied to a display made of glass to improve the strength thereof, and the color of the visible light region can be realized by including a proper amount of pigment. Further, by depositing the nonconductive vacuum evaporation inorganic material, metal luster can be realized without using a metal material, heavy weight which is a disadvantage of a metal material can be reduced, and raw material cost can be reduced. Further, it is possible to manufacture a shatterproof film having a thin thickness even by laminating the layers having various functions, and the shatterproof film can be usefully used in the production of a display having a small, thin film, or the like.

1 is a cross-sectional view of a light-scattering film according to an embodiment of the present invention.
2 is a cross-sectional view of a scattering-resistant film according to another embodiment of the present invention.

The present invention relates to an optical transparent adhesive layer; A base layer; A primer layer; A mold pattern layer; An inorganic vapor deposition layer; And a light-shielding printing layer laminated in this order, wherein the inorganic vapor deposition layer contains a non-conductive vacuum metalizing (NCVM) inorganic substance.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an anti-scattering film according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a cross-sectional view of a light-scattering film according to an embodiment of the present invention.

1, the anti-scattering film 100 according to an exemplary embodiment of the present invention includes an optical transparent adhesive layer 102, a base layer 103, a primer layer 104, a mold pattern layer 105, an inorganic vapor deposition layer 106, and a light shielding printing layer 107.

Optical transparency Adhesive layer

The optical clear adhesive (OCA) layer 102 is a layer made of an optically transparent adhesive material, which can eliminate the air layer, improve the visibility, and improve the heat insulation. The optical transparent adhesive layer can be used, for example, for attachment to a display made of glass.

The optical transparent adhesive layer may include a polymer resin and a curing agent. The polymer resin is not particularly limited, but may be a resin which is not yellowed by ultraviolet rays and has good dispersibility of the UV absorbent. For example, the polymer resin includes a polyester resin, an acrylic resin, an alkyd resin, and an amino resin. The polymer resin may be used alone, or two or more kinds of copolymers or mixtures thereof may be used. Among them, an acrylic resin excellent in optical properties, weather resistance, adhesion to a substrate, and the like is preferable.

The acrylic resin may be one formed by polymerizing at least one of an acrylic monomer and a carboxyl group-containing unsaturated monomer. Specifically, the acrylic monomer is at least one monomer selected from the group consisting of methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, isobutyl (meth) acrylate, ) Acrylate, cyclohexyl (meth) acrylate, ethylhexyl (meth) acrylate, tetrahydroperfuryl (meth) acrylate, hydroxyethyl (meth) acrylate, 2- (Meth) acrylate, methyl? -Hydroxymethylacrylate, ethyl? -Hydroxymethylacrylate (meth) acrylate, 2-hydroxy-3-chloropropyl (Meth) acrylate, 3-methoxybutyl (meth) acrylate, ethoxydiethylene glycol (meth) acrylate, (Meth) acrylate, tetrafluoropropyl (meth) acrylate, 1,1,1-trimethylolpropane tri (meth) acrylate, methoxytripropylene glycol (Meth) acrylate, heptadecafluorodecyl (meth) acrylate, isobonyl (meth) acrylate, dicyclopentyl (meth) acrylate, (Meth) acrylate, dicyclopentenyl (meth) acrylate, dicyclopentenyloxyethyl (meth) acrylate, dicyclopentenyloxyethyl (meth) acrylate, and mixtures thereof.

More specifically, the acrylic monomers include methyl (meth) acrylate, butyl (meth) acrylate, and mixtures thereof. Specifically, the unsaturated monomer containing a carboxyl group may be at least one selected from the group consisting of acrylic acid, methacrylic acid, 2- (meth) acryloyloxyacetic acid, 3- (meth) acryloyloxypropyl acid, 4- (meth) acryloyloxybutyric acid , Acrylic acid dimer, itaconic acid, maleic acid, maleic anhydride, and mixtures thereof. More specifically, the carboxyl group-containing unsaturated monomer includes methacrylic acid, acrylic acid, and mixtures thereof.

The curing agent is not particularly limited as long as it is a substance capable of curing the polymer resin. Specifically, at least one selected from the group consisting of an isocyanate curing agent, an epoxy curing agent and an aziridine curing agent, which are not yellowed by ultraviolet rays, can be selected. In addition, the curing agent may be included in an amount of 0.2 to 0.5% by weight based on the total weight of the optical transparent adhesive layer. Specifically, the curing agent may be contained in an amount of 0.3 to 0.5% by weight, 0.3 to 0.45% by weight, or 0.35 to 0.45% by weight based on the total weight of the optical transparent adhesive layer. When the content of the curing agent is within the above range, the adhesive strength is not lowered and the durability is not lowered in the heat and humidity environment.

In addition, the optical transparent adhesive layer may further contain additives such as an antioxidant, a light stabilizer (for example, a hindered amine light stabilizer), and a photoinitiator for UV curing.

The photoinitiator may be at least one selected from the group consisting of benzophenone, thioxanthone, alpha-hydroxy ketone, ketone, phenyl glyoxylate, and acrylphosphine oxide (acyl phosphine oxide), and the like.

The optical transparent adhesive layer may have an adhesive force of 10 N / inch or more with respect to the glass in order to prevent scattering of the glass when the glass breakage occurs. Specifically, the optical transparent adhesive layer may have an adhesive force of 10 to 30 N / inch with respect to glass. When the adhesive force of the optical transparent adhesive layer is within the above range, there is an advantage that the sufficient scattering prevention effect and the rework process for recycling glass are easy.

The optical transparent adhesive layer may have a glass transition temperature of -40 占 폚 or higher in order to suppress the process and impression caused by external foreign matter. Specifically, the optical transparent adhesive layer may have a glass transition temperature of -40 to -15 占 폚, or -30 to -15 占 폚.

The optical transparent adhesive layer may have a thickness of 10 to 30 占 퐉. Specifically, it may have a thickness of 15 to 25 占 퐉, 15 to 20 占 퐉, or 15 to 17 占 퐉. When the thickness of the optical transparent adhesive layer is within the above range, the occurrence of defects due to pressing can be prevented and the adhesive force of the optical transparent adhesive layer can be appropriately maintained.

A release layer may further be included on the other surface of the optical transparent adhesive layer.

The release layer is removed for attachment to a glass display, and the release layer may be formed of an epoxy, an epoxy-melamine, an aminoalkyd, an acrylic, a melamine, a silicone, a fluorine, a cellulose, Based, paraffin-based, and the like.

The substrate layer

The base layer 103 is a base layer for laminating the other functional layers, and may include a base material such as a transparent film. The transparent film is excellent in strength to prevent scattering of glass such as tempered glass of a touch screen panel and has a visible light transmittance of not less than 85%, specifically not less than 95% A film having excellent transparency can be used.

The base layer 103 may be formed of a material selected from the group consisting of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethersulfone (PES), polycarbonate (PC) and polypropylene And may be made of at least one material selected from the group consisting of, but not limited to, PET.

The thickness of the base layer may be 1 탆 to 10 탆, specifically, 2 탆 to 4 탆.

Primer layer

The primer layer 104 intervenes between the base layer 103 and the mold pattern layer 105 to help attach the mold pattern layer 105 and realize the color of the visible light region.

The primer layer 104 may include at least one selected from the group consisting of a thermosetting resin and a UV curable resin. The primer layer 104 may include a urethane resin, an acrylic resin, a polyisocyanate, a polyol, or the like as a main component.

The primer layer (104) comprises a pigment dispersion, wherein the pigment dispersion is a pigment; And oligomer compounds having from 3 to 8 at least one of a hydroxyl group and a carbonyl group. The primer layer may contain the pigment dispersion in an amount of 2 to 5 wt%, more preferably 2 to 4 wt%, based on the total weight of the primer layer.

The pigment may have an average particle size of 30 to 150 nm, more specifically 30 to 100 nm. In addition, the pigment may be at least one pigment having a maximum absorption rate in a wavelength range of 350 to 500 nm or 400 to 650 nm. The pigment dispersion may contain the pigment in an amount of 0.1 to 10% by weight based on the weight of the pigment dispersion and 0.2 to 4% by weight of the pigment dispersion. When the content of the pigment is within the above range, it is possible to realize colors in the entire visible light region.

The pigment is not limited as long as it is capable of realizing a hue in a visible light region, for example, an anthraquinone-based pigment, a phthalocyanine-based pigment, and the like.

The oligomer compound having at least one of the hydroxyl group and the carbonyl group having from 3 to 8 is used for improving the adhesion of the mold pattern layer 105. Examples thereof include N-vinylpyrrolidone, pentaerythritol triacrylate, tricyclodecane di Methanol diacrylate, and the like, and specifically, pentaerythritol triacrylate, tricyclodecane dimethanol diacrylate, and the like.

Further, in order to further improve the adhesion ability of the mold pattern layer 105, the primer layer may further include a copolymer of 2-pyrrole iodone and acetylene.

The primer layer may contain a copolymer of 2-pyrrole iodone and acetylene in an amount of 10 to 20% by weight, specifically 11 to 13% by weight, based on the total weight of the primer layer.

The primer layer may have a thickness of 2 to 3 占 퐉. When the thickness of the primer layer is within the above range, the color of the visible light region can be realized.

The primer layer may be formed by microgravure coating, slot die coating, or the like.

The mold pattern layer

The mold pattern layer 105 has a pattern (design) intended by the user formed on one surface of the primer layer 104. The mold pattern layer 105 may be patterned by in-mold injection molding on a surface of the primer layer 104, followed by UV curing. The mold pattern layer may have a thickness of 10 to 20 占 퐉, specifically 10 to 17 占 퐉 or 15 to 17 占 퐉.

The mold pattern layer 105 may include a urethane acrylic oligomer, an amine-based monomer, a carboxyl-based monomer, or the like as a main component.

The inorganic vapor deposition layer

The inorganic vapor deposition layer 106 may be a planarization layer formed by sputter-depositing a non-conductive vacuum deposition inorganic material on the mold pattern layer 105. The inorganic vapor deposition layer 106 imparts metallic luster to the shrinkage preventing film. The inorganic vapor deposition layer 106 may be formed by a non-conductive vacuum metalizing (NCVM) method. The nonconductive vacuum deposition inorganic material may be at least one selected from the group consisting of Nb, Si and Ti, and more specifically Nb and Si.

The inorganic vapor deposition layer 106 may have a thickness of 0.01 to 0.1 탆, more specifically 0.02 to 0.05 탆. When the thickness of the inorganic vapor deposition layer 106 is within the above range, the anti-scattering film having an appropriate level of metallic luster can be obtained without lowering the adhesion between the layers.

The inorganic vapor deposition layer may include one or more layers on the anti-scattering film, and specifically, the anti-scattering film may further include an inorganic vapor deposition layer containing a nonconductive vacuum deposited inorganic substance between the optical transparent adhesive layer and the substrate layer. That is, the anti-scattering film may include an inorganic vapor deposition layer on both sides of the substrate layer. The inorganic vapor deposition layers may have the same composition or may have different compositions.

As described above, the anti-scattering film 200 comprising two inorganic vapor deposition layers 206a and 206b is shown in Fig.

Shielding printing layer

The light-shielding print layer 107 can freely display photographs, patterns, various colors, patterns, and the like in a desired form according to the user's preference. The light blocking print layer 107 may include black ink, for example, black ink (product name: Black) of HS chemical.

The light-shielding printing layer may have a thickness of 10 to 50 占 퐉, specifically 15 to 20 占 퐉.

As described above, the anti-scattering film according to the present invention can be applied to a display made of glass to improve the strength thereof, and the color of the visible light region can be realized by including a proper amount of pigment. Further, by depositing the nonconductive vacuum evaporation inorganic material, metal luster can be realized without using a metal material, heavy weight which is a disadvantage of a metal material can be reduced, and raw material cost can be reduced. Further, it is possible to manufacture a shatterproof film having a thin thickness even by laminating the layers having various functions, and the shatterproof film can be usefully used in the production of a display having a small, thin film, or the like.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the following examples are intended to illustrate the present invention, but the scope of the present invention is not limited thereto.

Example  One : Scattering prevention  Production of film

15% by weight of pentaerythritol triacrylate (Mizuno M340) was added to 80% by weight of urethane acrylic oligomer (NIPPON GOHSEI, UV1700B), 5% by weight of Photoinitiator 1-184 (Ciba) was added and mixed . Methyl ethyl ketone was added to the mixture to dilute the mixture to a solid content of 20%, and Pigments 1 and 2 were added by weight as shown in the following Table 1 so as to be 4% by weight based on the solid content to prepare a coating solution (composed of a urethane acrylic oligomer mixture Mold solution).

The coating solution was coated on a PET film having a thickness of 100 mu m to a thickness of 3 mu m using a Meyer bar, dried at 80 DEG C for 2 minutes and UV-cured (light quantity: 0.4J) to prepare a primer layer.

Then, the coating liquid was applied to one surface of the primer layer, molded by an in-mold injection method, and UV-cured (light quantity: 0.4J) to form a mold pattern layer. Niobium (Nb) and silicon (Si) were deposited on the mold pattern layer by a sputtering method, and black ink (HS chemical) was applied to the vapor deposition surface and dried at 70 ° C for 30 minutes to prepare a light- .

Further, Nb and Si were deposited on the back surface of the primer layer in the same manner as above, and OCA (optical clear adhesive, SKCHAAS) was laminated on the deposition surface to prepare an optical transparent adhesive layer.

Example  2 to 6: Scattering prevention  Production of film

The anti-scattering films of Examples 2 to 6 were produced in the same manner as in Example 1 except that the kind and content of the pigment were changed as shown in Tables 1 and 2 below.

Experimental Example  One : Blue light  Color coordinates in the area

Color coordinate values in the blue light region of the obtained anti-scattering film were obtained using a color measuring instrument (Transmittance mode, U-4100).

Sputter deposition Pigment Color coordinate Deposition 1 Deposition 2 Pigment 1 Pigment 2 L * A * B * Example 1 20 nm 80nm 3 wt% 1 wt% 45 -8.12 -22.32 Example 2 20 nm 80nm 3.3 wt% 0.7 wt% 45 -9.17 -21.22 Example 3 20 nm 80nm 3.6 wt% 0.4 wt% 45 -11.32 -20.85

Pigment 1: BV231 (Iridos)

Pigment 2: BO260 (Iridos)

Experimental Example  2 : Red light  Color coordinates in the area

Color coordinate values in the red light region were obtained in the same manner as in Experimental Example 1

Sputter deposition Pigment Color coordinate Deposition 1 Deposition 2 Pigment 3 Pigment 4 L * A * B * Example 4 20 nm 80nm 2.5 wt% 1.5 wt% 52 4.21 1.12 Example 5 20 nm 80nm 2.25 wt% 1.75 wt% 52 4.56 2.28 Example 6 20 nm 80nm 2.0 wt% 2.0 wt% 52 5.12 3.69

Pigment 3: Y-1 (SKCHAAS)

Pigment 4: R-1 (SKCHAAS)

As shown in Tables 1 and 2, it can be seen that the anti-scattering films manufactured in Examples 1 to 6 implement metal luster by doubly vapor-depositing nonconductive vacuum deposition inorganic materials. Further, it can be seen that various kinds of saturation can be realized in the same color sequence by controlling the kind and content of the pigment of the primer layer. Therefore, the shrink-preventive film can be used as a decor film in a display device that requires various color implementations because it can realize the color of the entire region corresponding to the visible light color coordinates.

100, 200: Shatterproof film
101, 201: glass layer
102, 202: Optical transparent adhesive layer
103, 203: substrate layer
104, 204: primer layer
105, and 205: mold pattern layer
106, 206a, and 206b: an inorganic vapor deposition layer
107, 207: Shading printing layer

Claims (18)

An optical transparent adhesive layer; A base layer; A primer layer; A mold pattern layer; An inorganic vapor deposition layer; And a light-shielding printing layer in this order,
Wherein the inorganic vapor deposition layer comprises a non-conductive vacum metalizing (NCVM) inorganic material,
Wherein the primer layer comprises a pigment dispersion,
Wherein the pigment dispersion is a pigment; And oligomer compounds having from 3 to 8 at least one of a hydroxyl group and a carbonyl group,
Wherein the primer layer further comprises a copolymer of 2-pyrrole iodone and acetylene.
The method according to claim 1,
Wherein the optical transparent adhesive layer has a thickness of 15 to 25 占 퐉.
The method according to claim 1,
Wherein the anti-scattering film further comprises a release layer on the other side of the optical transparent adhesive layer.
delete The method according to claim 1,
Wherein the primer layer contains the pigment dispersion in an amount of 2 to 5% by weight based on the total weight of the primer layer.
The method according to claim 1,
Wherein the pigment has an average particle diameter of 30 to 150 nm and at least one pigment having a maximum absorption rate in a wavelength range of 350 to 500 nm or 400 to 650 nm.
The method according to claim 1,
Wherein the pigment dispersion contains the pigment in an amount of 0.2 to 4% by weight based on the weight of the pigment dispersion.
delete The method according to claim 1,
Wherein the primer layer comprises a copolymer of 2-pyrrole iodone and acetylene in an amount of 11 to 13% by weight based on the total weight of the primer layer.
The method according to claim 1,
Wherein the primer layer has a thickness of 2 to 3 占 퐉.
The method according to claim 1,
Wherein the mold pattern layer is patterned by UV curing after in-mold injection molding.
12. The method of claim 11,
Wherein the mold pattern layer has a thickness of 10 to 17 mu m.
The method according to claim 1,
Wherein the inorganic vapor deposition layer is a planarization layer formed by sputter-depositing a non-conductive vacuum deposition inorganic material on the mold pattern layer.
The method according to claim 1,
Wherein the nonconductive vacuum deposited inorganic material is at least one selected from the group consisting of Nb, Si and Ti.
14. The method of claim 13,
Wherein the inorganic vapor deposition layer has a thickness of 0.02 to 0.05 mu m.
The method according to claim 1,
Wherein the anti-scattering film further comprises, between the optical transparent adhesive layer and the base layer, an inorganic vapor deposition layer containing a nonconductive vacuum deposited inorganic substance.
The method according to claim 1,
Wherein the light-shielding printing layer comprises black ink.
18. The method of claim 17,
Shielding printing layer has a thickness of 15 to 20 mu m.

Images