KR20120098089A - Display filter for preventing dew condensation and method of manufacturing thereof - Google Patents

Abstract

PURPOSE: A display filter for preventing dew condensation and a manufacturing method thereof are provided to prevent dews at a hot region with high humidity. CONSTITUTION: A hydrophobic resin layer(120) is coated on a substrate(110). The hydrophobic resin layer is made of hydrophobic resins or resins to which hydrophobic additives are added. The hydrophobic resins are fluorine group compounds. The hydrophobic additives make layers on surfaces of the resins. The thickness of the hydrophobic resin layer is 10 ~ 30 micrometers.

Description

Display filter for preventing condensation and its manufacturing method {DISPLAY FILTER FOR PREVENTING DEW CONDENSATION AND METHOD OF MANUFACTURING THEREOF}

The present invention relates to a display filter for preventing condensation and a method of manufacturing the same. More particularly, the present invention relates to a display filter for preventing dew condensation and a method for manufacturing the same.

As the modern society becomes highly informational, display devices are becoming remarkably advanced and rapidly spreading. Display devices such as televisions, PC monitors, portable display devices, and the like have tended to have larger screen sizes and thinner screens.

Accordingly, Cathode Ray Tube (CRT) devices, which are representative of display devices, include Liquid Crystal Display (LCD), Plasma Display Panel (PDP) devices, and Field Emission Display devices. : FED) and flat panel displays (FPDs) such as organic light emitting displays (OLEDs).

PDP devices are in the spotlight due to their excellent display ability such as brightness, contrast, afterimage, viewing angle, and the like. The PDP apparatus applies a direct current or alternating voltage to the electrodes, whereby discharge occurs in the gas between the electrodes. The image is displayed by excitation of the phosphor by the ultraviolet rays accompanying this and emitting visible light.

However, the PDP device has a problem in that a large amount of electromagnetic waves and near-infrared radiation are emitted. Electromagnetic waves and near-infrared rays have a harmful effect on the human body and may cause malfunctions of precision devices such as cordless phones and remote controls. In addition, due to the orange light (neon light) emitted from the discharge gas, there is a problem that the color purity is poor compared to the CRT apparatus.

Therefore, the PDP device employs a display filter in front of the display panel to solve this problem.

On the other hand, in recent years, such display filters have been adopted in the form of cover glass on the front of DID (Digital Information Display) and LCD TV.

However, condensation occurs due to moisture condensation on the back of the filter in areas with a large temperature difference between day and night, and the problem of deterioration of the visibility of the display due to problems such as material bureaus and contamination caused by such condensation is increasing.

In order to solve such a problem, conventionally, an anti-fogging film such as a surface hydrophilic triacetyl cellulose (TAC) film was attached and adjusted to spread without condensation. However, such a film has a problem in that the cost burden of the finished product is high due to its high price, and when the capacity for absorbing the film is exceeded, its function is lost. .

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a display filter for preventing condensation and a method of manufacturing the same that can prevent the occurrence of condensation defects in the high temperature and high humidity region.

To this end, the present invention is a substrate; And a hydrophobic resin layer coated on the substrate, wherein the hydrophobic resin layer is formed of a resin made of a hydrophobic material or a resin containing a hydrophobic additive.

Here, the hydrophobic material may be a fluorine compound.

In addition, the hydrophobic additive may be phase separated from the resin by the density difference to rise to the surface of the resin to form a layer.

The hydrophobic resin layer may have a thickness of 10 μm to 30 μm.

In addition, the hydrophobic resin layer may include at least one of a coloring pigment, a neon cut dye, a near infrared absorbing material, an anti-glare material, or a Newton ring preventing material.

On the other hand, the present invention comprises a first step of preparing a substrate and a resin; And a second step of forming a hydrophobic resin layer by coating the resin on the substrate, wherein the resin includes a hydrophobic material itself or a hydrophobic additive.

Here, the hydrophobic material may be a fluorine compound.

In addition, the hydrophobic additive may be phase separated from the resin by the density difference to rise to the surface of the resin to form a layer.

In the second step, the resin may be coated on the substrate by using a slot die coating method.

In addition, the hydrophobic resin layer may be formed to a thickness of 10㎛ ~ 30㎛.

In addition, the resin may include at least one of a coloring pigment, a neon cut dye, a near infrared absorbing material, an anti-glare material, or a Newton ring preventing material.

According to the present invention, it is possible to prevent the occurrence of dew condensation in the high temperature and high humidity region, and to reduce the product cost due to the simplified structure.

In addition, according to the present invention, by forming a hydrophobic resin layer on the substrate through a coating process instead of the conventional film adhesion method, it is possible to further improve the durability of the display filter for preventing condensation.

In addition, according to the present invention, the display filter for preventing condensation can be applied to building structures and materials such as windows and windows in which condensation occurs frequently in addition to the display device.

1 is a cross-sectional view schematically showing a condensation preventing display filter according to an embodiment of the present invention.
Figure 2 is a schematic cross-sectional view showing a display filter for preventing condensation according to another embodiment of the present invention.
3 is a conceptual diagram illustrating a principle of formation of a display filter for preventing condensation according to another embodiment of the present invention.

Hereinafter, a display filter for preventing condensation according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Referring to FIG. 1, the condensation preventing display filter 100 according to an exemplary embodiment of the present invention includes a substrate 110 and a hydrophobic resin layer 120.

The substrate 110 is a substrate disposed on the front surface of the display panel (not shown) to protect the display panel (not shown) and transmit light at the same time. The substrate 110 preferably has high transparency and heat resistance. In terms of transparency of the substrate 110, the visible light transmittance is preferably 80% or more, and in terms of heat resistance, the glass transition temperature is preferably 50 ° C or more. In addition, an inorganic compound molding and an organic polymer molding may be used as the material of the substrate 110. At this time, examples of the inorganic compound molded article include semi-tempered glass and quartz. The organic compound moldings include polyethylene terephthalate (PET), acrylic (poly), polycarbonate (PC), urethane acrylate (polyurethane acrylate), polyester (polyester), epoxy acrylate (epoxy acrylate) , Brominated acrylate (polyester), polyvinyl chloride (PolyVinyl Chloride, PVC) and the like.

The hydrophobic resin layer 120 is formed on the back surface of the substrate 110. That is, the hydrophobic resin layer 120 is disposed between the substrate 110 and the display panel (not shown).

The hydrophobic resin layer 120 is formed on the substrate 110 to prevent the occurrence of condensation. That is, the water droplets generated by the temperature difference are not formed on the surface by the low surface energy of the surface of the hydrophobic resin layer 120 and are rolled down by gravity, thereby preventing defects and malfunctions caused by condensation of the display filter 100. do. At this time, the hydrophobic resin layer 120 may itself be made of a hydrophobic material, a fluorine-based compound may be used as the hydrophobic material. The hydrophobic resin layer 120 may be formed to a thickness of 10㎛ ~ 30㎛, if the thickness of the hydrophobic resin layer 120 is less than 10㎛, it is difficult to properly implement the condensation prevention function using a hydrophobic property. On the other hand, when the thickness of the hydrophobic resin layer 120 exceeds 30 µm, dew condensation can be prevented, but optical characteristics such as transmittance are lowered.

Meanwhile, the hydrophobic resin layer 120 may have an optical correction function or an optical interference problem improvement function in addition to the condensation prevention function. To this end, the hydrophobic resin layer 120 may include at least one of a coloring pigment, a neon cut pigment, a near infrared absorbing material, an anti-glare material, or a Newton ring preventing material. Here, the coloring pigment is a pigment that increases the color reproduction range and increases the sharpness of the screen, cyanine, anthraquinone, naphthoquinone, phthalocyanine, naphthalocyanine, dimonium, nickel dithiol, azo, Styl-based, phthalocyanine-based, methine-based, porphyrin-based, azaporphyrin-based and the like can be used. The neon cut pigment is a pigment used to prevent a phenomenon in which red visible light generated from a plasma is changed into an orange color in a display module. In other words, the neon cut dye is a dye that absorbs orange light (neon light) and lowers the light transmittance of the wavelength band, and only needs to absorb 10% to 90% of light having a wavelength in the 550 nm to 610 nm band. Cyanine-based, polymethine-based, squarylium salt-based, phthalocyanine-based, naphthalocyanine-based, quinone-based, azaporphyrin-based, azo-based, azochelate-based, azrenium-based, pyryllium-based, croconium-based, indoaniline chelate And indonaphthol chelates, dithiol metal complexes, pyrromethenes, azomethines, xanthenes, oxonols and the like.

In addition, the near-infrared absorber is a material that selectively absorbs wavelength light in the near-infrared region, a mixed pigment of nickel complex and diammonium, a compound dye containing copper ions and zinc ions, a cyanine dye, an anthraquinone dye, One or more selected from the group consisting of squarylium-based compounds, azomethine-based compounds, ocisonon compounds, azo-based compounds, and benzylidene-based compounds can be used, as well as various materials that absorb near infrared rays. Of course.

Light diffusing beads are used as the anti-glare material, and the light diffusing beads are PMMA, vinyl chloride, acrylic resin, PC, PET, PE, PS, PP, PI, glass, silica. It may include at least one of. In this case, the light diffusion beads may have the same or different refractive index as the substrate 110 and may have two or more sizes and refractive indices.

As described above, the hydrophobic resin layer 120 having the hydrophobic property and the optical function to prevent condensation is compared with a filter having an anti-fogging film for preventing condensation. Since it solves with a single layer, manufacturing cost can be reduced by implementing a simplified layer structure than the conventional. In addition, since the hydrophobic resin layer 120 according to the present invention can be semi-permanently maintained, the condensation prevention function can be continuously maintained without limitation of moisture absorption. In addition, since the hydrophobic resin layer 120 according to the present invention is integrated with the substrate 110 through coating, unlike the conventional bonding method, durability of the display filter 100 may be improved.

Hereinafter, a display filter for preventing condensation according to another embodiment of the present invention will be described with reference to FIGS. 2 and 3.

2 is a cross-sectional view schematically showing a condensation preventing display filter according to another embodiment of the present invention, Figure 3 is a conceptual diagram showing the principle of formation of a condensation preventing display filter according to another embodiment of the present invention.

2 and 3, the condensation preventing display filter 200 according to another embodiment of the present invention includes a substrate 110 and a hydrophobic resin layer 220.

Another embodiment of the present invention is different only in the hydrophobic resin layer compared to an embodiment of the present invention, and the other components are the same, the same reference numerals for the same components and detailed description thereof will be omitted. do.

The hydrophobic resin layer 220 plays the same role as the hydrophobic resin layer 120 and prevents the occurrence of condensation and is formed on the substrate 110 with the same thickness. The hydrophobic resin layer 220 includes a resin 221 and a hydrophobic additive 222. That is, the hydrophobic additive 222 injected into the liquid resin 221 is formed in a layer on the surface of the resin 221. Here, the hydrophobic additive 222 introduced into the resin 221 is phase-separated from the resin 221 by the density difference with the resin 221 in the resin 221 and floats on the surface of the resin 221 to form a layer. Since condensation is generated on the surface of the hydrophobic resin layer 220, the same effects as those of the exemplary embodiment of the present invention may be realized even when the hydrophobic additive 222 is formed on the surface of the resin 221. In addition, the condensation preventing display filter 200 according to another exemplary embodiment of the present invention forms a layer of the hydrophobic resin 222 only on a part of the hydrophobic resin layer 220, that is, the surface thereof, thereby reducing the amount of hydrophobic material used. Manufacturing costs can be further reduced.

Hereinafter, a method of manufacturing a display filter for preventing condensation according to an embodiment of the present invention will be described.

The method for manufacturing a display filter for preventing condensation according to an embodiment of the present invention includes a first step of preparing a substrate and a resin and a second step of forming a hydrophobic resin layer by coating the resin on the substrate.

First, in a first step, a substrate and a resin are prepared. Here, it is preferable to use the board | substrate which has high transparency and heat resistance. It is preferable to use a substrate having a visible light transmittance of 80% or more, and a substrate having a glass transition temperature of 50 ° C or more. Also, from a material point of view, a substrate made of an inorganic compound molding and an organic polymer molding can be used. In this case, semi-tempered glass, quartz, or the like may be used as the inorganic compound molding. The organic compound moldings include polyethylene terephthalate (PET), acrylic, polycarbonate (PC), urethane acrylate (polyurethane acrylate), polyester (polyester) and epoxy acrylate (epoxy acrylate). Brominated Acrylate, PolyVinyl Chloride (PVC) and the like may be used.

In addition, the resin may be made of a material having hydrophobic properties, such as a fluorine compound. At this time, the resin made of a fluorine-based compound itself forms a hydrophobic resin layer. And the hydrophobic additive may be added to the conventional resin, the condensation preventing function can be implemented by a layer made of this hydrophobic additive.

In addition, in the first step, it is preferable to prepare a resin including at least one of a coloring pigment, a neon cut pigment, a near infrared absorbing substance, an anti-glare substance, or a Newton ring preventing substance. Through this, the final hydrophobic resin layer may be optimized for outdoor displays by implementing color correction and optical functions as well as condensation prevention functions.

Next, in the second step, the aforementioned resin is coated on the substrate to form a hydrophobic resin layer. Here, the resin coating process may use a slot die coating method. At this time, it is preferable that the hydrophobic resin layer formed through the resin coating process is controlled to have a thickness of 10 μm to 30 μm.

As such, after the second step is carried out to form a hydrophobic resin layer coated on the substrate, and then dried for a predetermined time, the manufacture of a display filter for preventing condensation according to an embodiment of the present invention is completed.

The display filter for condensation pants produced by the method for manufacturing a condensation prevention display filter according to an embodiment of the present invention is caused by the low surface energy of the surface of the hydrophobic resin layer, and the water droplets generated by the temperature difference do not form on the surface. Rolling to prevent dew condensation. And since the hydrophobic resin layer implements optical properties in addition to hydrophobic properties, it is possible to simplify the structure than the conventional filter in which these functions are separated, and to form a hydrophobic resin layer through a coating process instead of adhesion, thereby reducing the manufacturing cost than the conventional And durability can be improved.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of the appended claims as well as the appended claims.

100: condensation prevention display filter 110: substrate
120, 220: hydrophobic resin layer 221: resin
222: hydrophobic additive

Claims (11)

Board; And
A hydrophobic resin layer coated on the substrate;
Including,
The hydrophobic resin layer,
Condensation prevention display filter, characterized in that formed of a resin made of a hydrophobic material or a resin containing a hydrophobic additive.
The method of claim 1,
The hydrophobic material is a display filter for preventing condensation, characterized in that the fluorine-based compound.
The method of claim 1,
The hydrophobic additive is phase-separated from the resin by the difference in density to float on the surface of the resin to form a display filter for preventing condensation.
The method of claim 1,
The said hydrophobic resin layer is 10 micrometers-30 micrometers in thickness, The condensation prevention display filter characterized by the above-mentioned.
The method of claim 1,
The hydrophobic resin layer is a display filter for preventing condensation, characterized in that it comprises at least one of a coloring pigment, a neon cut pigment, a near-infrared absorbing material, an anti-glare material or a Newton ring preventing material.
A first step of preparing a substrate and a resin; And
A second step of forming a hydrophobic resin layer by coating the resin on the substrate;
Including,
The resin comprises a hydrophobic material itself or a hydrophobic additive comprising a display filter for preventing condensation.
The method of claim 6,
The hydrophobic material is a condensation prevention display filter manufacturing method, characterized in that the fluorine-based compound.
The method of claim 6,
The hydrophobic additive is phase-separated from the resin by the difference in density to float on the surface of the resin to form a display filter for preventing condensation, characterized in that.
The method of claim 6,
The second step is a method for manufacturing a display filter for preventing condensation, characterized in that for coating the resin on the substrate using a slot die coating method.
The method of claim 6,
The hydrophobic resin layer is a condensation prevention display filter manufacturing method, characterized in that formed in a thickness of 10㎛ ~ 30㎛.
The method of claim 6,
The resin is a method for manufacturing a display filter for preventing condensation, characterized in that it comprises at least one of a coloring pigment, a neon cut pigment, a near-infrared absorbing material, an anti-glare material or a Newton ring preventing material.

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