KR20060078094A - Polarizing film radiating far infrared ray and the picture display device using the same - Google Patents

Abstract

The present invention relates to a far-infrared radiation polarizing film for applying a far-infrared radiation material to a polarizing film and radiating far infrared rays and preventing glare, and an image display apparatus using the same. More specifically, by applying a polarizing film containing a material that emits far infrared rays to an image display device such as CRT, LCD, PDP, OLED, etc., the far infrared rays which are beneficial to the human body are radiated from the polarizing film and at the same time, It relates to a far-infrared radiation polarizing film for preventing irregularities by making the surface of each layer irregular, and an image display apparatus using the same. The present invention (1) the first transparent protective film layer to protect the polarizing element layer; (2) a polarizing element layer which absorbs light oscillating in the stretching direction and transmits light oscillating in the vertical direction; And (3) a second transparent protective film layer protecting the polarizing element layer, wherein at least one layer of the first transparent protective film layer or the second transparent protective film layer is formed of a far infrared ray emitting material. In addition, it is possible to easily and conveniently activate blood circulation by far-infrared radiation in daily life, strengthen the metabolism, and get the health promotion effect of eliminating human waste, and also make the unevenness on the surface of the far-infrared radiation layer It provides a far-infrared radiation polarizing film further comprising a far-infrared radiation layer to prevent together.

Polarized light, far infrared ray, PVA, TAC, glare, diffuse reflection

Description

Far Infrared Radiation Polarizing Film and Image Display Apparatus Using Them {POLARIZING FILM RADIATING FAR INFRARED RAY AND THE PICTURE DISPLAY DEVICE USING THE SAME}

1 is a structural diagram of a polarizing film composed of a polarizing element layer and a TAC layer,

2 is a state diagram showing a state in which light is incident and reflected on the polarizing film of FIG.

3 is a structural diagram of a polarizing film including a far infrared ray emitting layer according to the present invention,

4 is a state diagram showing the appearance of diffuse reflection while passing external light through the far-infrared radiation layer of the polarizing film of FIG.

5 is a state diagram showing a state in which the internal light passes through the far-infrared radiation layer of the polarizing film of FIG.

6 is a flowchart of a manufacturing process of a polarizing film according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: polarizer layer

210: upper TAC layer

220: lower TAC layer

300: far infrared radiation layer

310: far infrared radiation particles

S100: polarizing element layer forming process

S200: TAC layer bonding process

S300: bonding process of far-infrared radiation layer

The present invention relates to a far-infrared radiation polarizing film for applying a far-infrared radiation material to a polarizing film and radiating far infrared rays and preventing glare, and an image display apparatus using the same. More specifically, a polarizing film containing a material emitting far-infrared rays is applied to image display apparatuses such as CRT (brown tube), LCD (liquid crystal display), PDP (plasma display), OLED (organic electroluminescence display), and the like. The present invention relates to a far-infrared radiation polarizing film and an image display apparatus using the same to prevent far glare by irradiating far-infrared rays beneficial to the human body in the polarizing film and at the same time irregularizing the surface of the outer layer containing the far-infrared radiation material.

Recently, a lot of functional products for health promotion have been developed and released. These functional products for health promotion are largely divided into those that allow a particular effect to be expressed through taking them and those that are installed or worn close to the human body so that a specific effect is expressed.

Among functional products for health promotion, the functional products for health promotion to be installed or worn in close proximity to the human body to express specific effects are usually manufactured by adding natural minerals and ceramics such as jade and charcoal which are known to be effective for health promotion.

However, these functional products are simply attached to beddings or jewelry by processing natural minerals, such as durability is significantly reduced and there is a disadvantage that it is easy to break when continued use.

In addition, when the functional material for health promotion is added to clothing, the original function may not last long due to damage that may occur due to frequent washing. In addition, even if combined with a functional material for health promotion by changing the structure inside the garment is not easy to wear, the original touch when worn, there is a disadvantage in that there is a restriction in activities after wearing.

On the other hand, in the case of functional substances by taking the efficacy has not been scientifically validated, there are not many cases of side effects after taking.

The present invention is the first time the application of the far-infrared radiating material to the polarizing film, and the present invention is also the first to use the far-infrared radiating material as a diffuse reflection material to prevent anti-glare (Anti-Glare).

The present invention relates to a far-infrared radiation polarizing film that prevents glare by applying a material that emits far-infrared radiation to a polarizing film and simultaneously irradiates the surface of the far-infrared radiation layer to prevent glare. By using the polarizing film according to the present invention and the image display apparatus using the same, an image display apparatus such as a CRT (brown tube), an LCD (liquid crystal display), a PDP (plasma display), an OLED (organic electroluminescence display), etc. It allows you to see far-infrared rays that are beneficial to the human body radiated from mobile phones, laptops, PCs, and LCD TVs in everyday life. In addition, through the irregular surface consisting of fine particles that emit far infrared rays are diffuse reflection to prevent glare.

The present invention relates to a far-infrared radiation polarizing film for emitting far infrared rays and at the same time preventing glare, and an image display apparatus using the same.

The main terms used herein are defined as follows.

In the present specification, the 'polarizing device layer' is a polyvinyl alcohol (hereinafter referred to as 'PVA') treated with iodine (Iodine) or dichroic dye solution and stretched so that the iodine or dye molecules are aligned in the stretching direction. The layer refers to a layer functioning as a polarizing substrate film.

In the present specification, the 'TAC layer' refers to a layer made of triacetyl cellulose (hereinafter referred to as 'TAC') and positioned above and below the polarizer layer to protect the polarizer layer.

In the present specification, the 'far infrared ray emitting layer' refers to an outer layer of a polarizing film composed of far infrared ray emitting fine particles as a layer containing a far infrared ray emitting material.

Hereinafter will be described in detail focusing on the configuration of the present invention.

The polarizing film according to the present invention comprises a polarizing element layer, a pair of TAC layers and far-infrared radiation layer above and below the polarizing element layer.

The polarizing film for LCD generally comprises a polarizing element layer having a polarizing function, an upper TAC layer and a lower TAC layer bonded to the upper and lower portions of the polarizing element layer to protect the polarizing element layer.

An outer layer that can perform various functions may be further formed outside the upper TAC layer. The polarizing film is divided into a retardation polarizing film, a semi-transmissive polarizing film, a high reflective semi-transmissive polarizing film, a surface reflective polarizing film, and a reflective polarizing film depending on what function is given to the outer layer.

In the present invention, the outer layer is further formed outside the upper TAC layer to implement a polarizing film, an image display device using the same, and a method of manufacturing the same, which simultaneously radiate the far-infrared rays of interest in the present invention. That is, by applying the far-infrared fine particles to the outside of the upper TAC to shoot the far infrared rays in everyday life and at the same time irregularly forming the surface of the far-infrared radiation layer to diffuse the external light to prevent glare (Anti-Glare).

FIG. 1 is a structural diagram of a polarizing film including an upper TAC layer 210 and a lower TAC layer 220 protecting upper and lower sides of the polarizer layer 100 and the polarizer layer 100.

In the case of the polarizing film of FIG. 1, there is no far-infrared radiation layer as a basic polarizing film, and the light transmitted through the upper TAC layer is reflected at the same reflection angle as the incident angle, resulting in a glare phenomenon. FIG. 2 is a state diagram illustrating a state in which the light is reflected in the polarizing film of FIG. 1 and reflected at the same angle. When the incident light is reflected by the upper TAC layer of the polarizing film as shown in Figure 2, the glare phenomenon occurs.

3 is a structural diagram of a polarizing film according to the present invention. The far infrared ray emitting layer 300 including the far infrared ray emitting material 310 is bonded to the outside of the upper TAC layer 210. The far-infrared radiation layer 300 has irregularities on its surface. 4 and 5 show the external light and the internal light transmitted from the polarizing film according to the present invention, respectively.

4 is a state diagram illustrating a state in which the transmitted light is diffusely reflected by the far-infrared radiating material 310 when external light is incident on the polarizing film, thereby interfering with or being reinforced with the reflected light to prevent glare. FIG. 5 is a state diagram illustrating the appearance of the light emitted by the backlight of the LCD to the outside of the polarizing film while passing through the lower TAC layer 220 and the polarizing element layer 100.

The far-infrared radiating material of the far-infrared radiation layer, which is the outer layer of the present invention, is iron oxide (Fe ₂ O ₃ , FeO), aluminum oxide (Al ₂ O ₃ ), silicon oxide (SiO ₂ ), calcium oxide (CaO), potassium oxide (K ₂ O), magnesium oxide (MgO), titanium oxide (TiO _2), oxidation of sodium (Na ₂ O), silver oxide (Ag ₂ O), lead oxide (PbO), zirconium oxide (ZrO _2), copper oxide (CuO) At least one of zinc oxide (ZnO), manganese oxide (MnO), strontium oxide (SrO ₂ ), and the like. Among the far-infrared radiating materials listed, the far-infrared radiating materials mainly used are iron oxide (Fe ₂ O ₃ , FeO), aluminum oxide (Al ₂ O ₃ ), silicon oxide (SiO ₂ ), calcium oxide (CaO), potassium oxide (K ₂ O), and a small amount of the remaining far infrared emitting material is preferably used.

The far-infrared radiation materials listed above are dispersed in a cured resin (hereinafter referred to as a 'curable resin') in which free radicals are generated and cured by heat, ultraviolet rays, and visible light to form a far-infrared radiation layer.

The curable resin preferably uses an epoxy compound as a main agent, and mixes an acrylic compound curable with ultraviolet rays in order to control the properties of the paint and the coating film such as the viscosity, crosslinking density, heat resistance, and chemical resistance of the resin. However, in consideration of physical properties and use environment, it is also possible to use an epoxy compound or an acrylic compound alone.

In the present invention, the epoxy compound is glycidyl ether, 2-hydride such as tetramethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, bisphenol A diglycidyl ether, etc. It is preferable to use an epoxy ester such as oxy-3-phenoxypropyl acrylate, bisphenol A-diepoxy-acrylic acid adduct, at least one of monomers or oligomers such as alicyclic epoxy represented by the following formula.

In the present invention, the acrylic compound is lauryl acrylate, ethoxy diethylene glycol acrylate, methoxy triethylene glycol acrylate, phenoxyethyl acrylate, tetrahydrofuryl acrylate, isobornyl acrylate, 2-hydroxyethyl acryl Monofunctional acrylates, such as the rate, 2-hydroxypropyl acrylate, and 2-hydroxy-3- phenoxy acrylate, neopentyl glycol diacrylate, 1, 6- hexanediol diacrylate, and a trimethylol propane tree Acrylic acid derivatives such as polyfunctional acrylates such as acrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, trimethylolpropane acrylate, 2-ethylhexyl methacrylate, n-stearyl methacrylate, cyclohexyl methacrylate, tetrahydro Single-functional methacrylates such as lefuryl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxybutyl methacrylate, 1,6-hexanediol dimethacrylate, trimethylolpropane trimethacrylate, Monomers or oligomers such as urethane acrylates such as methacrylic acid derivatives such as polyfunctional methacrylates such as glycerin dimethacrylate, glycerin dimethacrylate hexamethylene diisocyanate and pentaerythritol triacrylate hexamethylene diisocyanate at least It is preferable to use one.

In the present invention, a polymerization initiator is used to polymerize the curable resin. The polymerization initiator to be used is not limited to any kind as long as it can generate free radicals by heat, ultraviolet rays, visible light, or the like. The polymerization initiator is preferably used 0.1 parts to 5.0 parts by weight based on 100 parts by weight of the curable resin. If it is less than 0.1 part by weight, it is difficult to start polymerization, and if it is larger than 5.0 part by weight, there is a risk of deformation of resin properties due to excessive polymerization.

Polymerization initiators that generate active radicals by heat may use azo compounds such as 2,2'-azobis (2,4) -dimethylbarellonitrile, and organic foam oxides such as benzoyl peroxite and lauroyl peroxide. Polymerization initiators that generate active radicals by the emission of ultraviolet or visible light include 2,2'-dimethoxy-2-phenylacetophenone, diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropane-1- Acetophenone, benzoin methyl ether, and benzoin ethyl ether, such as one, benzyl dimethyl ketal, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-2-morpholino (4-thiomethylphenyl) propane-1-one , Benzoin ethers such as benzoin isopropyl ether and benzoin isobutyl ether, and benzophenone, o-benzoylmethylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyl-diphenyl sulfide and 4-benzoyl 2,4- and benzophenones such as -N, N'-dimethyl-N-2 [2- (1-oxo-2propenyloxy) ethyl] benzenemethanealuminum bromide and (4-benzoylbenzyl) trimethylammonium chloride Thioxanthones, such as diethyl thioxanthone and 1-chloro-4- dichloro thioxanthone, 2,4,6-trimethylbenzoyl diphenyl benzoyl oxide, etc. alone Or it is preferable to mix and use.

The content of the far-infrared radiation substance is preferably 0.5 parts by weight to 20 parts by weight based on 100 parts by weight of the curable resin. More preferably, the content of far infrared ray emitting material is 3 parts by weight to 15 parts by weight based on 100 parts by weight of the curable resin.

When the far infrared ray emitting material is less than 0.5 parts by weight, the amount of far infrared rays emitted is insignificant and the effect of diffuse reflection of external light on the surface is weak. In addition, when the far infrared ray emitting material is larger than 20 parts by weight, the predetermined clarity required for the polarizing film may not be satisfied. If the content of far-infrared radiation material is greater than 3 parts by weight, more than a certain level of far-infrared rays are radiated, and light transmitted through the far-infrared radiation layer is sufficiently diffused to prevent glare, and when smaller than 15 parts by weight, more satisfactory transparency can be obtained. have.

It is preferable that the thickness of a far-infrared radiation layer is 1 micrometer-15 micrometers, More preferably, they are 3 micrometers-9 micrometers.

If the thickness of the far-infrared radiation layer is less than 1㎛, the effect of far-infrared radiation may be insignificant, and the thickness of the layer may be smaller than the particle size of the radiation material, so that the far-infrared radiation material may be exposed to the outside and thicker than 15㎛. Although the far-infrared radiation effect can be obtained, in the far-infrared radiation layer, the far-infrared radiation material forms a double and triple layers inside the layer to prevent the transmitted light and lower the transmittance. In addition, when the thickness of the far-infrared radiation layer is larger than 3㎛, the radiation dose of the applied far-infrared radiation material can maintain the appropriate line.When the thickness of the far-infrared radiation layer is kept smaller than 9㎛, the desired transparency can be maintained while maintaining a certain level of diffuse reflection. You can get it. Far infrared ray radiation according to the thickness and transparency according to the diffuse reflection can be confirmed through the embodiment according to the present invention.

The particle size of the far infrared emitting material is preferably 1 μm to 10 μm. When the particle size of the far-infrared radiating material is between 1 μm and 10 μm, the far-infrared radiating material may be properly distributed in the far-infrared radiating layer to radiate far infrared rays, and at the same time, diffuse reflection may be performed by the particles of the far-infrared radiating material. However, the thickness of the far-infrared radiation layer is preferably larger than the particle size of the far-infrared radiation material. Therefore, as the thickness of the far-infrared radiation layer is changed, the particle size of the far-infrared radiating material may be adjusted together to obtain the far-infrared radiation effect and the anti-glare effect through the diffuse reflection in the polarizing film including the far-infrared radiating material.

Hereinafter will be described a providing process for making a far-infrared radiation polarizing film according to the present invention. As a method of manufacturing a polarizing film, both a wet coating, a spin coating, and a deposition coating may be used. However, as a method of manufacturing a polarizing film according to the present invention, only a method of manufacturing a polarizing film using a wet coating will be described.

The process of manufacturing a polarizing film according to the present invention using a wet coating method is (1) 'polarizing device layer forming process' (S100), (2) the upper and lower TAC layer and the polarizing device layer to form a polarizing device layer 'TAC layer bonding process' (S200) for bonding the lower TAC layer, and (3) 'far infrared radiation layer bonding process' (S300) for bonding the far-infrared radiation layer on the upper side of the upper TAC layer.

The process of manufacturing the polarizing film is preferably made of the above three steps, it is also possible that the polarizing element layer, TAC layer, far-infrared radiation layer is bonded through one whole process or two processes. The polarizing element layer forming step (S100), the TAC layer bonding step (S200), and the far infrared radiation layer bonding step (S300) may be performed in a different order.

In addition, when the process is simplified, the composition forming the layer thickness or layer of the polarizer layer, the TAC layer, and the far-infrared radiation layer may be modified within a range easily expected by those skilled in the art.

Each process is explained in full detail.

(1) Polarizing element layer forming process (S100)

In the polarizing element layer forming step, first, the PVA film is dyed with iodine or dichroic dye having dichroism (dyeing step). After dyeing, the PVA is crosslinked with boric acid or borax (crosslinking step). The dyed iodine or dye is uniaxially stretched (stretching process).

In the polarizing element layer forming process, the crosslinking process and the stretching process may proceed sequentially, but after finishing the stretching process, the crosslinking process is performed (stretching process → crosslinking process), or after the stretching process, the crosslinking process is performed and the stretching process is performed again. It may also be (stretching step → crosslinking step → drawing step).

It is preferable that the thickness of the polarizing element layer formed is 10 micrometers-40 micrometers. The thickness of the polarizing element layer varies depending on the degree of stretching in the stretching step. When the thickness of the polarizer layer is thinner than 10 μm, the polarization function may not be sufficiently secured and durability may be degraded. In addition, if the thickness of the polarizing device layer is thicker than 40㎛ the drawback is not sufficient enough that the polarizing function iodine or dye may not be arranged in a straight line, the polarizing film is too thick and the cost of manufacturing a polarizing device layer is expensive There is this.

PVA staining in the present invention is usually preferably operated at room temperature, more preferably from 15 ℃ to 42 ℃ range. If the dyeing temperature is lower than 15 ℃ dyeing efficiency is lower, if higher than 42 ℃ dyeing is too active and difficult to control.

In addition, it is preferable to make crosslinking tank temperature in 45 degreeC-68 degreeC. If the temperature of the crosslinking bath is lower than 45 ° C., the crosslinking reaction is not active. If the crosslinking bath temperature is higher than 68 ° C., the crosslinking reaction cannot be induced.

(2) TAC layer bonding process (S200)

After the polarizing device layer forming process, the TAC layer is bonded to the upper and lower polarizing device layers. The TAC layer functions to protect the polarizer layer while covering the polarizer layer on both upper and lower sides. The thickness of the TAC layer is preferably in the range of 30 μm to 90 μm. If the thickness of the TAC layer is thinner than 30㎛ can not function to protect the polarizing element layer, if the thickness is thicker than 90㎛ there is a fear that the transparency by the polarizing film is lowered.

When bonding a polarizing element layer and a TAC layer, an adhesive is used, and it is preferable to use what is normally used in manufacture of a polarizing film.

(3) Bonding process of far-infrared radiation layer (S300)

Bond the far-infrared radiation layer outside the upper TAC layer. Far-infrared radiation layer is composed of a small amount of components required for the production of far-infrared radiation material, curable resin, polymerization initiator and other polarizing film. It is preferable that a far infrared ray emitting layer is 3 micrometers-9 micrometers as mentioned above.

In order to prevent glare, which is a technical feature of the present invention, and to make a polarizing film that emits far infrared rays, the far infrared ray emitting layer should contain an infrared ray emitting material and an irregular surface of the far infrared ray emitting layer. Far-infrared radiation is emitted from everyday life by the far-infrared radiation material, and the surface of the far-infrared radiation layer is irregular, so that the incident light is diffused by the fine particles of the far-infrared radiation material to prevent glare of the surface.

Therefore, it is preferable that the particles of the far infrared ray emitting material are smaller than the thickness of the far infrared ray emitting layer. In addition, the curable resin and the polymerization initiator mixed with the far-infrared radiation substance are mixed in an appropriate content, respectively, to prevent glare. The content of the far infrared ray emitting substance, the curable resin, and the polymerization initiator is as described above. That is, the far-infrared radiation substance is preferably in the range of 0.2 to 20 parts by weight, more preferably 3 to 15 parts by weight based on 100 parts by weight of the curable resin. In addition, the polymerization initiator is preferably 0.1 parts by weight to 5 parts by weight with respect to 100 parts by weight of the curable resin.

The size of the far-infrared radiating material is smaller than the thickness of the far-infrared radiation layer and small enough to form irregularities in the far-infrared radiation layer.

The appearance of the anti-glare effect in the far-infrared radiation layer containing the far-infrared radiation material fine particles has been described with reference to FIGS. 4 and 5. In addition, Figure 6 shows a flow chart of a polarizing film manufacturing process according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to preferred examples of the present invention and comparative examples compared with the present invention.

(Example 1)

The far-infrared radiation layer was applied to the upper TAC layer of the polarizing film so that the particle size was 2 μm to 3 μm and the thickness to be coated was 5 μm. Far infrared emitting material was used by mixing Al ₂ O ₃ and a small amount of ZrO ₂ in a weight ratio of 2 to 8. The far-infrared radiation substance was mixed by dispersing 5 parts by weight of the curable resin with respect to 100 parts by weight of the curable resin. Curable resin mixed epoxy resin and acrylic resin at 7: 3. The polymerization initiator used 1 part by weight based on 100 parts by weight of the curable resin.

(Example 2)

The far-infrared radiation layer was applied to the upper TAC layer of the polarizing film so that the particle size was 2 μm to 3 μm, and the coating thickness was 5 μm. Far infrared emitting material was used by mixing Al ₂ O ₃ and a small amount of ZrO ₂ in a weight ratio of 2 to 8. The far-infrared radiation substance was mixed by dispersing 7 parts by weight in the curable resin with respect to 100 parts by weight of the curable resin. Curable resin mixed epoxy resin and acrylic resin in 8: 2. The polymerization initiator was used 1 part by weight based on 100 parts by weight of the curable resin.

(Example 3)

The far-infrared radiation layer was applied to the upper TAC layer of the polarizing film so that the particle size was 2 μm to 3 μm, and the coating thickness was 5 μm. Far infrared emitting material was used by mixing Al ₂ O ₃ and a small amount of ZrO ₂ in a weight ratio of 2 to 8. The far-infrared radiation substance was mixed by dispersing 10 parts by weight of the curable resin with respect to 100 parts by weight of the curable resin. Curable resin mixed epoxy resin and acrylic resin in 8: 2. The polymerization initiator was used 1 part by weight based on 100 parts by weight of the curable resin.

(Example 4)

The far-infrared radiation layer was applied to the upper TAC layer of the polarizing film so that the particle size was 3 μm to 4 μm and the coating thickness was 6 μm. The far infrared emitting material was used by mixing Al ₂ O ₃ and SiO ₂ in a weight ratio of 3 to 7. The far-infrared radiation substance was mixed by dispersing 5 parts by weight of the curable resin with respect to 100 parts by weight of the curable resin. Curable resin mixed epoxy resin and acrylic resin at 7: 3. The polymerization initiator was used 1 part by weight based on 100 parts by weight of the curable resin.

(Example 5)

The far-infrared radiation layer was applied to the upper TAC layer of the polarizing film so that the particle size was 3 μm to 4 μm and the coating thickness was 6 μm. The far infrared emitting material was used by mixing Al ₂ O ₃ and SiO ₂ in a weight ratio of 3 to 7. The far-infrared radiation substance was mixed by dispersing 7 parts by weight in the curable resin with respect to 100 parts by weight of the curable resin. Curable resin mixed epoxy resin and acrylic resin at 7: 3. The polymerization initiator was used 1 part by weight based on 100 parts by weight of the curable resin.

(Example 6)

The far-infrared radiation layer was applied to the upper TAC layer of the polarizing film so that the particle size was 3 μm to 4 μm and the coating thickness was 6 μm. The far infrared emitting material was used by mixing Al ₂ O ₃ and SiO ₂ in a weight ratio of 3 to 7. The far-infrared radiation substance was mixed by dispersing 10 parts by weight of the curable resin in 100 parts by weight of the curable resin. Curable resin mixed epoxy resin and acrylic resin at 7: 3. The polymerization initiator was used 1 part by weight based on 100 parts by weight of the curable resin.

(Comparative Example 1)

A polarizing film was prepared without forming a separate outer layer on the upper TAC layer. Comparative Example 1 was used to examine the optical characteristics and far-infrared radiation characteristics of the general polarizing film.

(Comparative Example 2)

The outer layer was applied to the upper TAC layer of the polarizing film so that the particle size is 2㎛ to 3㎛, the coating thickness is 6㎛. The outer layer did not contain far-infrared emitting material, but the outer layer was surface-treated for diffuse reflection. Curable resin used on the outer side mixed epoxy resin and acrylic resin at 7: 3. The polymerization initiator was used 1 part by weight based on 100 parts by weight of the curable resin.

In Table 1, examples including the far-infrared radiating material and comparative examples without the far-infrared radiating material in the present invention are shown in terms of its components and contents. In addition, the particle size of the far-infrared emitting material and the thickness of the outer layer are also shown in Examples and Comparative Examples.

Distinction Far infrared emitting material Content (parts by weight) Particle size (㎛) Coating thickness (㎛) Example 1 Al ₂ O ₃ + ZrO ₂ 5 2-3 5 Example 2 Al ₂ O ₃ + ZrO ₂ 7 2-3 5 Example 3 Al ₂ O ₃ + ZrO ₂ 10 2-3 5 Example 4 Al ₂ O ₃ + SiO ₂ 5 3-4 6 Example 5 Al ₂ O ₃ + SiO ₂ 7 3-4 6 Example 6 Al ₂ O ₃ + SiO ₂ 10 3-4 6 Comparative Example 1 - 0 - - Comparative Example 2 - 0 2-3 6

In Table 1, the content refers to the content based on 100 parts by weight of the curable resin, and the particle size refers to the particle diameter of the far ultraviolet ray emitting material. In addition, application | coating thickness means the thickness of an ultraviolet radiation layer.

Comparative Example is a polarizing film that does not contain a far infrared ray emitting material. Comparative Example 1 is a polarizing film composed of only a polarizing element layer and a TAC layer. Comparative Example 2 is a polarizing film formed by forming an outer layer on the polarizer, the TAC layer, and the upper TAC layer. The outer layer is made of a material that only serves to prevent glare.

Table 2 below shows experimental data of Examples and Comparative Examples.

Distinction HAZE Clarity Far Infrared Emissivity (%) Example 1 9.3 88.2 88.7 Example 2 14.5 77.5 88.8 Example 3 28.6 65.9 89.0 Example 4 6.8 71.5 88.8 Example 5 20.2 57.2 89.1 Example 6 29.3 42.3 89.2 Comparative Example 1 0.48 99.4 84.5 Comparative Example 2 26.5 45.0 85.6

As can be seen from the experimental data in Table 2, in the preferred embodiment of the polarizing film according to the present invention, the far-infrared emissivity was more than 88%. Comparing this result with the experimental data of the comparative example that does not include the far infrared emitting material, it can be seen that there is a difference. In addition, HAZE and transparency in the comparative example composed of the same components except for the far infrared emitting material were measured at a level similar to that of the examples of the present invention.

In the above, this invention was demonstrated in detail with reference to an Example and a comparative example centering on a structure. However, the scope of the present invention is not limited to the above embodiments but may be embodied in various forms of embodiments within the appended claims. Without departing from the gist of the invention as claimed in the claims, any person of ordinary skill in the art is considered to be within the scope of the claims described in the present invention to the extent possible to vary.

As described above, through the far-infrared radiation polarizing film according to the present invention and the image display apparatus using the same, a mobile phone, PDA having an image display apparatus such as a CRT (brown tube), an LCD (liquid crystal display), and a PDP (plasma display) In the portable terminal, TV, notebook computer, etc., the far infrared rays beneficial to the human body can be obtained, and at the same time, the surface of the far infrared radiation layer from which the far infrared rays are irradiated can be made irregular to prevent glare.

Claims (15)

In the polarizing film comprising a polarizing element layer and a TAC layer, Far-infrared radiation polarizing film further comprises a far-infrared radiation layer containing a far-infrared radiation material on the outside of the polarizing film The method of claim 1, Far-infrared radiation polarizing film, characterized in that the outer surface of the far-infrared radiation layer forms an irregular surface and diffuse reflection on the surface of the far-infrared radiation layer The method of claim 1, The far-infrared radiation polarizing film is dispersed in a curable resin to form the far-infrared radiation layer is applied to the far-infrared radiation polarizing film The method of claim 1, wherein The content of the far-infrared radiation substance is 0.5 parts by weight to 20 parts by weight based on 100 parts by weight of the curable resin, and the far-infrared radiation layer is far infrared radiation polarizing film, characterized in that applied to a thickness of 1㎛ 15㎛ The method of claim 1, wherein The content of the far-infrared radiation material is 3 to 15 parts by weight based on 100 parts by weight of the curable resin, and the far-infrared radiation layer is far infrared radiation polarizing film, characterized in that applied to a thickness of 3㎛ 9㎛ The method of claim 1, wherein The far-infrared emitting material is far-infrared radiation polarizing film, characterized in that the particle size of 0.5㎛ to 10㎛ The method of claim 1, wherein The far infrared radiation layer is far-infrared radiation polarizing film, characterized in that applied by wet coating, spin coating or deposition coating The method of claim 1, wherein The far-infrared radiation material is iron oxide (Fe ₂ O ₃ , FeO), aluminum oxide (Al ₂ O ₃ ), silicon oxide (SiO ₂ ), calcium oxide (CaO), potassium oxide (K ₂ O), magnesium oxide (MgO) , Titanium oxide (TiO ₂ ), sodium oxide (Na ₂ O), silver oxide (Ag ₂ O), lead oxide (PbO), zirconium oxide (ZrO ₂ ), copper oxide (CuO), zinc oxide (ZnO), manganese oxide Far infrared radiation polarizing film, characterized in that at least one of (MnO), strontium oxide (SrO ₂ ) The method of claim 3, wherein Far-infrared radiation polarizing film, characterized in that the curable resin is used alone or mixed with an epoxy compound or an acrylic compound The method of claim 9, The said epoxy type compound is glycidyl ether, such as tetramethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, bisphenol A diglycidyl ether, 2-hydroxy- Far-infrared radiation polarizing film characterized by using at least one of 3-phenoxypropyl acrylate, bisphenol A-diepoxy-acrylic acid adduct, or an alicyclic epoxy monomer or oligomer thereof. The method of claim 9, The acryl-based compound is lauryl acrylate, ethoxy diethylene glycol acrylate, methoxy triethylene glycol acrylate, phenoxyethyl acrylate, tetrahydrofuryl acrylate, isobornyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxy-3-phenoxy acrylate, neopentyl glycol diacrylate, 1,6-hexanediol diacrylate, trimethylol propane triacrylate, pentaerythritol triacrylate , Pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, trimethylolpropane acrylate benzoate, 2-ethylhexyl methacrylate, n-stearyl methacrylate, cyclohexyl methacrylate, tetrahydrofurfuryl meta Acrylate, 2-hydroxyethyl methacrylate, 2-hydroxybutyl methacrylate Y, 1,6-hexanediol dimethacrylate, trimethylolpropane trimethacrylate, glycerin dimethacrylate, glycerin dimethacrylate hexamethylene diisocyanate, pentaerythritol triacrylate hexamethylene diisocyanate, or these Far-infrared radiation polarizing film, characterized in that using at least one monomer or oligomer The method of claim 3, wherein The curable resin is a far-infrared radiation polarizing film using a polymerization initiator for generating an active radical by the emission of heat, visible light or ultraviolet light. The method of claim 12, The polymerization initiator is 2,2'-azobis (2,4) -dimethylbarellonitrile, benzoyl peroxite, lauroyl peroxide, 2,2'-dimethoxy-2-phenylacetophenone, diethoxy acetophenone, 2-hydroxy-2-methyl-1-phenylpropane-1-one, benzyldimethyl ketal, 1-hydroxycyclohexyl-phenylketone, 2-methyl-2-morpholino (4-thiomethylphenyl) propane-1 -One, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, benzophenone, o-benzoylmethylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyl- Diphenylsulfide, 4-benzoyl-N, N'-dimethyl-N-2 [2- (1-oxo-2propenyloxy) ethyl] benzenemethanealuminum bromide, (4-benzoylbenzyl) trimethylammonium chloride, 2 At least one of thioxanthone, such as 4-4-diethyl thioxanthone and 1-chloro-4-dichloro thioxanthone, and 2,4,6-trimethylbenzoyldiphenylbenzoyl oxide is used. Far-infrared radiation polarizing film The method of claim 1, wherein The polarizing film further comprises at least one of a transflective film layer or a retardation film layer far-infrared radiation polarizing film A cathode-ray tube (CRT), a liquid crystal dispaly (LCD), a plasma display panel (PDP) and an organic field using the polarizing film according to claim 1 At least one of a group consisting of an organic light emitting diode (OLED)

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