KR100766168B1 - Film of display apparatus for improving high color reproduction and contrast ratio and method for manufacturing thereof - Google Patents

Abstract

A film of a display apparatus for improving high color reproduction and a contrast ratio and a method for manufacturing the same are provided to reduce a manufacturing cost by reducing the number of adhesions between film layers. A film of a display apparatus for improving high color reproduction and a contrast ratio includes a transparent base material(20) and a color correction light shielding film(38). The color correction light shielding film includes a transparent color correction layer(22b), a groove part, and an external light shielding part(36a,36b,36c,36d). The transparent color correction layer is laminated on an upper surface of the transparent material by using a mixed composition including a transparent material of 100 weight percent and a selective light absorbing material of 0.01 to 10 weight percent. The groove part is formed in a constant interval on the transparent color correction layer. The external light shielding part is formed by filling the inside of the groove part with a light shielding material.

Description

Film of display apparatus for improving high color reproduction and contrast ratio and method for manufacturing description

The following drawings attached to this specification are illustrative of preferred embodiments of the present invention, and together with the detailed description of the invention to serve to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings It should not be construed as limited to.

1 is a flowchart illustrating one method of manufacturing a high color reproduction contrast ratio enhancement film for a display device according to the present invention.

2 to 5 are process cross-sectional views for explaining the film manufacturing method according to FIG.

6 is a flowchart illustrating another method of manufacturing a high color reproduction contrast ratio enhancement film for a display device according to the present invention.

7 to 10 are process progress cross-sectional views for explaining the film manufacturing method according to FIG. 6.

11 is a spectrum of a comparative example for explaining the good heat resistance of the film produced according to the present invention.

<Description of Major Symbols in Drawing>

20 ... Transparent substrate 22, 22a, 22b ... Transparent color correction layer

24 ... stamper 26 ... stamper down arrow

28 ... UV generator 30 ... UV radiation direction arrow

32 ... stamp upward direction arrow

34.Recess groove 36a, 36b, 36c, 36d ...

38.Color-compensated shading film 39 ... Display panel assembly

40.External ambient light 42 ... Display generated light

The present invention relates to a high color reproduction contrast enhancing film for a display device and a method for manufacturing the same, and more particularly, to a composite film capable of improving contrast ratio without deteriorating luminance in a bright room environment as well as color function. The present invention relates to a high color reproduction contrast enhancement film for a display device having a multifunctional film structure, and a method of manufacturing the same.

As the modern society is highly informationized, optical electronics-related components and devices are being widely distributed as a remarkably advanced technology. Among them, display apparatuses for displaying images are widely used for television apparatuses, monitors of personal computers, various screen display apparatuses, and the like.

Plasma display devices are thin, light-emitting display devices that are easier to be enlarged than other image display devices, and are considered to have the most suitable characteristics for high-quality digital television. However, the plasma display device has a problem in that color purity characteristics are deteriorated due to unnecessary light emission of near infrared rays caused by plasma generated by plasma light emission and circuits and plasma of an inert gas used for screen emission. In addition, to minimize the harmful effects on the human body by electromagnetic waves and near-infrared rays generated from the plasma display device, to prevent malfunction of precision instruments, to reduce surface reflection, and to improve color purity, a filter is employed on the front surface of the plasma display device. have.

In such a conventional PDP device, external light may be introduced into the panel assembly through the PDP filter in an external bright condition, that is, a bright room condition. The light introduced through the PDP filter from the outside may overlap with the light generated in the discharge cells in the PDP panel assembly, thereby reducing the contrast ratio and reducing the display capability of the PDP device. There is a problem of worsening.

In order to solve the above-mentioned conventional problems, the technology disclosed in Korean Patent Laid-Open Publication No. 2005-104738 and the technology disclosed in Korean Patent Registration No. 59713 have been proposed. According to these prior documents, a contrast ratio improvement film constituting a light converging portion on a plurality of microlenses including an external light shielding layer has been developed, and attached to a filter to solve the problem of lowering contrast ratio in a bright environment. However, in addition to the advantages of the techniques according to these prior art documents, the contrast ratio enhancement film must be separately attached to the filter, resulting in a long manufacturing process, and additional processes require cumbersome work, and consequently increase the manufacturing cost. Have In addition, the technique according to these prior documents is weak in the physical properties of heat resistance and moisture resistance by bonding with the color correction film, there is also a problem that the performance of the existing color correction film is lowered.

Despite the recent efforts to solve the problems of the prior art, there are still technical problems to be solved, and the present invention has been made under such a technical background.

Technical problem to be solved by the present invention, based on the above-mentioned problems, is generated by manufacturing a separate film layer for preventing the lowering of the contrast ratio caused by the overlap of the light emitted from the internal discharge cell and the light flowing from the outside. To prevent the complexity of the process and the resulting increase in manufacturing costs, and to solve the problem that the performance of the product is degraded due to the heat generated by the conventional color correction film and the contrast ratio enhancement film bonding, to solve the technical problem SUMMARY OF THE INVENTION An object of the present invention is to provide a high color reproduction contrast ratio enhancement film for a display device and a method for producing the same that can be achieved.

One of the high color reproduction contrast ratio enhancement film for display devices provided by the present invention for achieving the technical problem to be achieved by the present invention, a transparent substrate; And 100 parts by weight of the transparent material, and a transparent pigment layer laminated on the transparent base material by using a mixed composition composed of 0.01 to 10 parts by weight of the selective light absorbing material with respect to the content of the transparent material, and spaced apart from each other at regular intervals. And a color correction light blocking film including an formed recess and an exterior shielding portion filled with a light shielding material in the recess.

The transparent material is a colorless transparent material having a transmittance of 90% or more, any one selected from polyester resins, thiol olefin resins, acrylic resins, epoxy resins and urethane resins, or a mixture of two or more arbitrarily selected among them, It is preferable to use a curable resin material that can be cured by any one of selected factors such as UV, radiation and radiation. On the other hand, the transparent material is not limited to the above exemplified materials, it is obvious that other non-exemplified materials can be used to obtain the technical effect to be achieved by the present invention.

The selective light absorbing material is preferably any one or a mixture selected from color correction pigments and near infrared shielding pigments.

The color correction pigment included in the selective light absorbing material is selected from anthraquinone, cyanine, azo, styryl, naphthalocyanine and methine, which can selectively absorb neon light having a wavelength band of 580 to 620 nm. It is preferable that any one single substance or two or more arbitrarily selected among them be included as a mixture, in an amount of 0.01 to 0.5 parts by weight based on 100 parts by weight of the first transparent material. With respect to the numerical range for the color correction pigment content, if the lower limit is less than the lower limit, the selective absorption of the neon light is lowered and color purity improvement effect cannot be expected, and if the upper limit is exceeded, the color balance of the filter is distorted. The transmittance is lowered, which is not preferable. On the other hand, the color correction pigment is not limited to the above illustrated materials, it is obvious that other non-exemplified materials that can achieve the technical effect to be achieved by the present invention can also be used.

The near-infrared shielding pigment included in the selective light absorbing material may be any one selected from dimonium-based, nickel-dithiol-based, phthalocyanine-based and cyanine-based, or any one selected from among them, capable of absorbing near-infrared rays having a wavelength band of 850 to 1,250 nm. It is preferable that two or more are included as a mixture, in an amount of 0.3 to 5 parts by weight based on 100 parts by weight of the first transparent material. Regarding the numerical range of the near-infrared shielding content, if it falls below the lower limit, the near-infrared rays are not effectively blocked and cause harmful electromagnetic waves and remote control malfunctions to the human body. Not preferred. On the other hand, the near-infrared shielding dye is not limited to the above-described materials, it is apparent that other non-exemplified materials that can achieve the technical effect to be achieved by the present invention can also be used.

As the selective light absorbing material, any one selected from porphyrin-based, squaarylium-based, rhodamine-based, cyanine-based, phthalocyanine-based, immonium-based, and dithiol-based materials capable of selectively absorbing light having a wavelength band of 300 to 1,200 nm Or a mixture of two or more optionally selected from among them is preferred. The above-described selective light absorbing material is not limited to the above-described materials, it is obvious that other non-exemplified materials can be used to obtain the technical effect to be achieved by the present invention.

The selective light absorbing material may be any one selected from thermosetting resins and ultraviolet curing resins consisting of acrylic resins, urethane resins, carbonate resins, epoxy resins and polyethylene tetraphthalate, or a mixture of two or more materials selected arbitrarily. But. It is apparent that the material is not limited to the above-exemplified materials, and other non-exemplified materials may be used to obtain the technical effects to be achieved by the present invention. On the other hand, the selective light absorbing material may further include a single material of any one selected from the group consisting of methyl ethyl ketone, toluene, butyl acetate, methanol, ethanol, xylene and acetone or a mixture of two or more materials selected arbitrarily thereof. However, the present invention is not limited to the above-described materials, and it is obvious that other non-exemplified materials may be used to obtain the technical effects to be achieved by the present invention.

The light-shielding material is a content of 0.05 to 10 parts by weight based on 100 parts by weight of the transparent material used to manufacture the color correction layer, and the color thereof is any one selected from black index inorganic materials, organic materials and metals, or the surface thereof is It is preferred if any one selected from inorganic, organic and metal treated with black by pigments or dyes is used. On the other hand, it is not limited to the above-described materials used as a light-shielding material, it is obvious that other non-exemplified materials that can obtain the technical effect to achieve the present invention can also be used as a light-shielding material. The external light shielding portion is preferably a wedge or trapezoid having a structure of the upper and lower narrow sections, and the thickness of the color correction light shielding film is preferably 50 to 500 µm.

One of the methods for producing a high color reproduction contrast ratio film for display device provided by the present invention for achieving the technical problem to be achieved by the present invention is (S11) transparent material, and 0.01 to 10 parts by weight of 100 parts by weight of the transparent material is optional Forming a color correction layer using a mixed composition made of a light absorbing material, and forming grooves disposed on the upper surface thereof to be spaced apart from each other at regular intervals; And (S12) forming a color correction light shielding film including an external light shielding part filled with a light shielding material in the recess portion.

In one of the methods for manufacturing a high color reproduction contrast ratio improvement film for a display device according to the present invention described above, the transparent material, the selective light absorbing material and the light blocking material are used in one of the high color reproduction contrast ratio improvement film for a display device according to the present invention described above. The same materials as those described above may be used, and the thickness of the color correction light shielding film is preferably formed in 50 to 500 μm. In the step (S11), the groove portion may be formed by using any one method selected from a roll forming method, a hot press method, and an injection molding method. On the other hand, it is not limited to the methods listed above, it is obvious that other methods that can bring about the same effect as the technical effect according to the present invention can be used.

In the step (S12), the filling method of the light blocking material in the recess may be any one selected from a wiping method, a silk printing method, and a photosensitive method. On the other hand, it is not limited to the methods listed above, it is obvious that other methods that can bring about the same effect as the technical effect according to the present invention can be used.

Another aspect of the high color reproduction contrast ratio enhancement film for a display device provided by the present invention for achieving the technical problem to be achieved by the present invention, a transparent substrate; A color correction layer formed by coating the upper surface of the transparent substrate using a mixed composition including 100 parts by weight of a first transparent material and a selective light absorbing material in an amount of 0.01 to 10 parts by weight based on the content of the first transparent material; A second light shielding material is laminated on the upper surface of the color correction layer, and the light shielding part includes a recessed part formed to be spaced apart from each other at regular intervals on the stacked second transparent material layer, and an external light shielding part formed by filling a light shielding material inside the recessed part. It characterized in that it comprises a layer.

In another of the above-described high color reproduction contrast ratio improvement films for display devices, the first transparent material and the second transparent material are used in one of the above high color reproduction contrast ratio improvement films for display devices according to the present invention. The same materials as the transparent material may be used, and the same materials as described above may also be used in the case of the selective light absorbing material or the light blocking material, and the outer light shielding portion has a wedge shape having a side cross-sectional structure thereof. Or it is preferable if it is trapezoid, The thickness of the said color correction layer is preferable in it being 5-50 micrometers, and the thickness of the said light shielding layer is preferable in it being 50-500 micrometers.

In order to achieve the technical problem to be achieved by the present invention, another method for manufacturing a high color reproduction contrast ratio improvement film for a display device provided by the present invention is (S21) a first transparent material and 0.01 to 100 parts by weight of the first transparent material. Coating a mixed composition comprising 10 to 10 parts by weight of a selective light absorbing material on the upper surface of the transparent substrate, and curing the mixed composition to form a color correction layer; (S22) forming a transparent layer having recesses on the upper surface of the color correction layer, the recesses being spaced apart from each other at regular intervals by using a second transparent material; And (S23) forming a light shielding layer by filling the light shielding material in the recess to form an external light shielding portion.

In another of the above-mentioned high color reproduction contrast ratio film manufacturing method for a display device according to the present invention, the first transparent material and the second transparent material in one of the high color reproduction contrast ratio improvement film for a display device according to the present invention described above The same materials as the transparent material used may be used, and the same materials as described above may also be used in the case of the selective light absorbing material and the light blocking material, and the external light shielding part may have the same shape as described above. It is preferable that the thickness of the color correction layer and the light shielding layer is also produced as a numerical value in the above-described range.

Hereinafter, the present invention will be described in detail with reference to examples, and detailed description will be made with reference to the accompanying drawings in order to help understanding of the present invention. However, embodiments according to the present invention can be modified in many different forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. Embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.

<Example 1>

1 is a flowchart illustrating an embodiment of a method of manufacturing a high color reproduction contrast ratio enhancement film for a display device according to the present invention, and FIGS. 2 to 5 are process sectional views illustrating the film manufacturing method according to FIG. 1. admit.

Referring to FIG. 1, it can be seen that the groove is formed using a color correction layer on an upper surface of the transparent substrate (S11), and the light blocking material is filled in the groove (S12). For each step (S11) and (S12), it will be described in more detail with reference to FIGS.

Color correction layer Groove  Formation step ( S11 )

Between the upper surface of the transparent substrate 20 and the stamper 24, a mixed composition composed of 0.01 to 10 parts by weight of a selective light absorbing material relative to 100 parts by weight of the transparent material is introduced to form a transparent color correction layer 22, By hardening the UV irradiation furnace 28 to transfer the shape of the stamper 24, the upper inlet width is wide, and the bottom bottom width is proceeding to form a wedge groove 34, which is a trapezoidal recessed portion of the light beam narrowing structure.

In the embodiment according to the present invention, as a material for manufacturing the transparent color correction layer 22 between the transparent substrate 20 and the stamper 24, 1 kg of a high refractive index acrylic curing resin, which is a transparent material, a cyanine-based selective light absorbing material 50 g of a pigment containing functional pigments, nickel dithiol pigments, dimonium pigments, and general organic pigments were added at a constant ratio, and 1 kg of butyl acetate, an organic solvent, was slowly added thereto, followed by stirring at 60 ° C. for about 4 hours. Then, the dispersion liquid which filtered and removed the micro-dispersed solid with the fine filter paper was used.

In the embodiment according to the present invention, the wedge groove 34 is formed in the groove portion by using a roll forming method as described later. A forming roll is mounted on the transparent substrate 20 to which a stamper 24 having a protruding pattern is formed, which is prepared in contrast to the wedge groove 34 to be formed in the color correction layer 22, and a lower portion of the transparent substrate 20. An ultraviolet ray generator 28 is mounted. As the transparent substrate 20, an optical PET film having a thickness of 188 μm was used. The material for manufacturing the color correction layer was slowly applied and rolled between the upper surface of the transparent substrate 20 and the stamper 24 formed with a pattern opposite to the pattern of the wedge groove 34 (arrow 26 in FIG. 2), and at the same time, ultraviolet rays. By irradiating (arrow 30 in Fig. 3) proceeds the curing operation, the physical properties change to the cured color correction layer (22a). Subsequently, when the stamper 24 is removed while rolling (arrow 32 in FIG. 4), the color correction layer 22b having the wedge grooves 34 is formed on the upper surface of the transparent substrate 20.

Shading material filling step ( S12 )

Filling the light shielding material in the wedge groove 34 is preferably carried out using any one method selected from the wiping method, silk printing method and photosensitive method. On the other hand, it is not limited to the methods listed above, it is obvious that other methods that can bring about the same effect as the technical effect according to the present invention can be used.

In the embodiment according to the present invention, as a light-shielding material, a carbon dispersion prepared by mixing 5% carbon paste and 100 g of a high refractive index acrylic curing resin is scattered on the light-shielding pattern film, and is used several times using a doctor blade composed of soft plastic. By wiping, the inside of the wedge 34 is uniformly filled and irradiated with ultraviolet rays to harden to form the external light shields 36a, 36b, 36c, and 36d.

The color correction layer 22b in which the external light shielding portions 36a, 36b, 36c, and 36d are formed is formed on the transparent substrate 20 in the form of a single layer, thereby functioning as the color correction light blocking film 38. The thickness of the color correction light shielding film 38 is preferably 50 to 500 µm.

 Since the external light shielding portions 36a, 36b, 36c, and 36d have a shape of a wedge groove 34, the cross section is formed in the same shape as the wedge groove 34. The outer light shielding portions 36a, 36b, 36c, and 36d filled with the light-shielding material are formed with a plurality of stripe shapes (black stripe layers) spaced apart from each other (see FIG. 5) having a predetermined period on the upper surface thereof. Is disposed to face the panel assembly 39 of the display device.

That is, the panel assembly 39 of the display device is mounted on the color correction light blocking film 38, and after the display generated light 42 is incident on the color correction light blocking film 38, It is displayed to the user located below. On the other hand, the external environmental light 40 may be incident from the lower portion of the color correction light blocking film 38, which is shielded by the external light shielding part 36 patterned on the color correction light blocking film 38 to hinder the performance of the display device. To solve the problem.

 If the external environmental light is introduced into the panel assembly from the outside of the display device, most of the external environmental light is shielded by passing through the external light shielding parts 36a, 36b, 36c, and 36d to provide contrast ratios for bright and bright conditions. In addition to increasing the number of functions required by the display device, for example, color correction, contrast enhancement, electromagnetic wave blocking, antireflection, and the like, a manufacturing process for performing multiple stacked film types optimized for individual functions Conventional problems can be solved by the composite multifunctionalized color light-shielding film 38 that can prevent the increase in manufacturing cost caused by the need for additional work or additional work processes. In addition, the present invention also provides an advantage of preventing the color correction effect from being degraded even in an environment requiring heat and moisture resistance of a conventional film structure.

<Example 2>

6 is a flowchart illustrating another method of manufacturing a high color reproduction contrast ratio enhancement film for a display device according to the present invention, and FIGS. 7 to 10 are process sectional views illustrating the film manufacturing method according to FIG. 6. .

Referring to FIG. 6, a color correction layer is formed on an upper surface of the transparent substrate (S21), a recess is formed on the upper surface of the color correction layer (S22), and a light blocking material is filled in the recess (S22). It can be seen that the process proceeds to step S23). Each step (S21) to (S23) will be described in more detail with reference to FIGS. 7 to 10.

Color Correction Layer  Manufacturing steps ( S21 )

First, in order to form the color correction layer 82, 30 g of polymethyl methacrylate (PMMA) was dissolved in 70 g of methyl ethyl ketone (MEK) and 100 g of the binder resin solution (S11) described above. 22) A coating solution was prepared by mixing pigments included in the selective light absorbing material used in the preparation dispersion. The prepared coating solution was coated on the upper surface of the transparent substrate 80 with a thickness of 15 μm, and then dried at 120 ° C. for 5 minutes to prepare a single color correction layer 82.

Transparent Groove  Forming step ( S22 )

While the transparent layer 84 is formed on the upper surface of the color correction layer 82 by using the second transparent material, the wedge groove 96, which is a recessed part of the image narrowing structure, has a wide top entrance width and a narrow bottom bottom width. The second transparent material, the same transparent material used in the step (S21) was used. However, at this time, it was used in a state that does not contain a selective light absorbing material.

In the embodiment according to the present invention, the wedge groove 96 was formed using the roll forming method as follows. The upper part of the transparent substrate 80 is equipped with a forming roll on which a stamper 86 having a protruding pattern is formed, which is prepared in contrast to the wedge groove 96 of the transparent layer 84, and the ultraviolet ray generator 90 under the transparent substrate 80. ) Is installed. The stamper 86 of the forming roll is brought close to the upper surface of the color correction layer 82 (arrow 88 in FIG. 7), and the transparent layer 84 is formed while slowly applying a high refractive index acrylic curing resin therebetween, and at the same time, the stamper 86 While the opposite shape of the pattern formed on the) is transferred to the transparent layer, the ultraviolet ray is irradiated onto the transparent layer 84 to be transferred to the pattern using the ultraviolet ray generator 90 disposed at the bottom (arrow 92 in FIG. 8) to proceed with curing. In this case, physical properties are changed to the cured transparent layer 84a. Thereafter, when the stamper 86 is separated (arrow 94 in FIG. 9), a transparent layer 84b having the wedge groove 96 formed thereon is formed on the upper surface of the color correction layer 82. The side cross-sectional structure of the wedge groove 96 formed by the above method was formed in the wedge shape of the upper and lower narrow narrow narrow upper surface.

Shading Filling  step( S23 )

The method of filling the light blocking material in the wedge groove 96 or the light blocking material filled in the wedge groove 96 and formed as the external light shielding portions 98a, 98b, 98c and 98d may be performed or used in the same manner as described above. It was. When the external light shielding portions 98a, 98b, 98c, and 98d are formed in the transparent layer 84b, the entire layer functions as a light shielding layer, and the light shielding layer, together with the color correction layer 82 at the bottom thereof, performs color correction light shielding. It functions as the film 100. It is preferable that the thickness of the light shielding layer which is the transparent layer 84b in which the said external light shielding parts 98a, 98b, 98c, and 98d were formed is 50-500 micrometers. Since the external light shielding portions 98a, 98b, 98c, and 98d have a shape of a wedge groove 96, the cross section is formed in the same shape as the wedge groove 96. The external light shielding portions 98a, 98b, 98c, and 98d filled with the light shielding material are formed with a plurality of stripe shapes spaced apart from each other (see FIG. 10) having a predetermined period, and the stripe pattern surface of the play device It is disposed to face the panel assembly 101.

That is, the panel assembly 101 of the display device is mounted on the color correction light blocking film 100, and the display generating light 104 emitted through the color correction light blocking film 100 enters the upper surface of the color correction light blocking film 100. It is displayed to the user located on the bottom surface. On the other hand, the external environment light 102 may be incident from the lower portion of the color correction light blocking film 100, which is shielded by the external light shielding part 98 formed on the color correction light blocking film 100 to perform the performance of the display device. The problem of inhibition can be solved.

If the external environmental light is introduced into the panel assembly from the outside of the display device, most of the external environmental light is shielded through the external light shielding portions 98a, 98b, 98c, and 98d to provide contrast ratios for the bright and light conditions. In addition to increasing the number of functions required by the display device, for example, color correction, contrast enhancement, electromagnetic wave blocking, antireflection, and the like, a manufacturing process for performing multiple stacked film types optimized for individual functions The composite multifunctional color correction light shielding film 100 that can prevent the increase in manufacturing cost caused by the need for additional work or additional work process is structurally simpler than the conventional film structure, and the manufacturing process It can proceed easily and can solve a conventional problem. In addition, the present invention also provides an advantage of preventing the color correction effect from being degraded even in an environment requiring heat and moisture resistance of a conventional film structure.

Table 1 below is a film prepared according to Example 1 and Example 2 according to the present invention as described above and the comparative example as a comparative example of the difference in the light shielding pattern in the contrast ratio enhancement film that is currently on the market and used as a conventional product After attaching the color correction film to the film containing no minerals, the optical and filter characteristics of each of them were measured and shown.

division Example 1 Example 2  Comparative example Transmittance 53.1% 50.5% 52.1 Color coordinates (0.299, 0.314) (0.300, 0.318) (0.300, 0.318) Film thickness 360㎛ 380㎛ Thermal Reliability (Color Coordinate) (0.299, 0.314) (0.300, 0.318) (0.303, 0.324)

In Table 1, the transmittance is visible light transmittance, which means the average transmittance of 380 to 780 nm according to the International Illumination Organization (CIE) International Standard, and the color coordinates are expressed by the formula in consideration of the human sensory function for each wavelength in CIE. As a formula, if the CIE Yxy color coordinates are found, data indicating the color scheme according to the coordinates can be obtained, and these data can be used to analyze the performance of the product. In particular, the uppercase letter Y represents transmittance, the lowercase letter xy represents color coordinates, the coordinates are in the form of distorted triangles, and each vertex corresponds to R, G, and B. In general, if x is large, it moves toward R, and if y is large, it moves toward G. If all xy values are small, it moves toward B. The middle point where the three colors meet is the white area. In addition, as a reliability condition, the yellowing degree of the color correction film attached for 500 hours at 80 ° C. can be evaluated to evaluate the degree of deterioration of the color sense function, and to determine the use of the film in the filter of the display device. Is used.

According to the results shown in Table 1, in terms of transmittance, Examples 1, 2 and Comparative Examples do not show a large difference, but in Examples 1 and 2, the change in color coordinate does not occur in terms of heat resistance, it can be evaluated that the characteristics are good. However, in the case of the comparative example, the deformation of the color coordinate occurs, it can be seen that the heat resistance characteristics are not good.

11 is a spectrum of a comparative example for explaining the good heat resistance of the film produced according to the present invention. As can be seen through the spectrum of the comparative example in FIG. 11, it can be seen that the initial spectrum shown in bold lines has changed as indicated by the thin lines after being used for 500 hours at 80 ° C. FIG. The change in the spectrum as shown in Figure 11 is a data that can confirm that the heat resistance is not good in the case of the comparative example, in the embodiment according to the present invention observed that there is no change in the spectrum even under the same conditions It was confirmed that it was good.

Optimal embodiments of the present invention described above have been disclosed. Although specific terms have been used herein, they are used only for the purpose of describing the present invention in detail to those skilled in the art, and are not used to limit the scope of the present invention as defined in the meaning or claims.

According to the present invention, it is possible to proceed more easily the complicated manufacturing process, which is manufactured by stacking the multilayer in the filter assembly used in the conventional display device, thereby reducing the number of bonding between the film layers, thereby eliminating additional work resulting in the manufacturing It is possible to reduce the cost and add the color and contrast enhancement functions at the same time, and it provides the advantage of improving the durability of the product without the problem of deterioration of the color correction pigment even under the heat / humidity condition.

Claims (21)

Transparent substrates; And 100 parts by weight of the transparent material, and a transparent color correction layer laminated on the transparent substrate by using a mixed composition consisting of 0.01 to 10 parts by weight of the selective light absorbing material relative to the transparent material, and formed to be spaced apart from each other at regular intervals on the transparent color correction layer And a color correction light shielding film including a recess and an external light shielding part filled with a light shielding material inside the recess. The method of claim 1, The transparent material is a colorless transparent material having a transmittance of 90% or more, and any one selected from a material consisting of a polyester resin, a thiol olefin resin, an acrylic resin, an epoxy resin, and a urethane resin, or a mixture of two or more selected arbitrarily among them A high color reproduction contrast enhancing film for a display device, characterized in that the curable resin material that can be cured by any one of heat, UV, and radiation. The method of claim 1, The external light shielding portion has a structure having an upper and lower side cross section, and its cross section has a wedge shape or a trapezoidal shape, and has a high color reproduction contrast enhancement film for display devices. The method of claim 3, The color correction light shielding film has a thickness of 50 to 500 µm, a high color reproduction contrast enhancement film for display devices. The method according to any one of claims 1 to 4, The selective light absorbing material, Any one selected from anthraquinone series, cyanine series, azo series, styryl series, naphthalocyanine series and methine series or any two or more selected thereof, which can selectively absorb neon light having a wavelength band of 580 to 620 nm, As a mixture, a color correction pigment contained in an amount of 0.01 to 0.5 parts by weight based on 100 parts by weight of the transparent material; And A single material selected from any one selected from dimonium-based, nickeldithiol-based, phthalocyanine-based and cyanine-based, or any two or more selected from these, capable of absorbing near infrared rays having a wavelength band of 850 to 1,250 nm is a mixture, based on 100 parts by weight of a transparent material. Or a near-infrared shielding pigment included in an amount of 0.3 to 5 parts by weight; A single substance selected from porphyrin-based, squaarylium-based, rhodamine-based, cyanine-based, phthalocyanine-based, immonium-based, and dithiol-based systems capable of selectively absorbing light having a wavelength band of 300 to 1,200 nm, or two or more arbitrarily selected among them A high color reproduction contrast enhancement film for display devices, characterized in that the mixture. The method of claim 5, The selective light absorbing material may be any one selected from a thermosetting resin and an ultraviolet curing resin consisting of an acrylic resin, a urethane resin, a carbonate resin, an epoxy resin and a polyethylene tetraphthalate, or a polymer resin which is a mixture of two or more materials selected arbitrarily from these. It further comprises a high color reproduction contrast enhancement film for a display device. The method of claim 1, The light-shielding material is used in an amount of 0.05 to 10 parts by weight based on the weight of the transparent material, the color of itself is a material of any one selected from the black index inorganic, organic and metal, or the surface is black by pigment or dye The color reproduction contrast enhancement film for display devices, characterized in that any one selected from inorganic, organic and metal treated with. Transparent substrates; A color correction layer formed by coating the upper surface of the transparent substrate using a mixed composition including 100 parts by weight of a first transparent material and a selective light absorbing material in an amount of 0.01 to 10 parts by weight based on the content of the first transparent material; A second light shielding material is laminated on the color correction layer, and the light shielding part includes a recess formed to be spaced apart from each other at regular intervals on the stacked second transparent material layer, and an external light shielding part formed by filling a light shielding material inside the recess. High-resolution reproduction contrast enhancement film for a display device, characterized in that consisting of; The method of claim 8, The first transparent material and the second transparent material is a colorless transparent material having a transmittance of 90% or more, any one material selected from a polyester resin, a thiol olefin resin, an acrylic resin, an epoxy resin, and a urethane resin Wherein at least two selected arbitrarily are curable resin materials which can be cured by any one of heat, UV and radiation as a mixture. The method of claim 8, The external light shielding portion has a side cross-section structure of a light-receiving narrow, and its cross section is wedge-shaped or trapezoidal-shaped. The method of claim 10, The color correction layer has a thickness of 5 to 50 µm, the high color reproduction contrast enhancement film for display device. The method of claim 11, The thickness of the said light shielding layer is 50-500 micrometers, The high color reproduction contrast improvement film for display apparatuses characterized by the above-mentioned. The method according to any one of claims 8 to 12, The selective light absorbing material, Any one selected from anthraquinone series, cyanine series, azo series, styryl series, naphthalocyanine series and methine series or any two or more selected thereof, which can selectively absorb neon light having a wavelength band of 580 to 620 nm, As a mixture, a color correction pigment contained in an amount of 0.01 to 0.5 parts by weight based on 100 parts by weight of the first transparent material; And A single material selected from any one selected from dimonium-based, nickeldithiol-based, phthalocyanine-based and cyanine-based, or any two or more selected from these, capable of absorbing near infrared rays having a wavelength band of 850 to 1,250 nm is a mixture, and the first transparent material 100 Or a near infrared shielding pigment contained in an amount of 0.3 to 5 parts by weight based on parts by weight; Single or any one selected from among porphyrin-based, squaarlium-based, rhodamine-based, cyanine-based, phthalocyanine-based, immonium-based, and dithiol-based systems capable of selectively absorbing light having a wavelength band of 300 to 1,200 nm A high color reproduction contrast enhancing film for display devices, characterized in that the mixture. The method of claim 13, The selective light absorbing material, It further comprises a polymer resin which is any one selected from a thermosetting resin and an ultraviolet curing resin consisting of an acrylic resin, a urethane resin, a carbonate resin, an epoxy resin and a polyethylene tetraphthalate, or a mixture of two or more materials selected from these. Color reproduction contrast ratio improvement film for display device to say. The method of claim 8, The light-shielding material filled in the recess is used in an amount of 0.05 to 10 parts by weight based on the weight of the transparent material, and the color of itself is a material selected from black index inorganic material, organic material and metal, or the surface thereof is pigment or A high color reproduction contrast enhancement film for display apparatuses, characterized in that the material is any one selected from inorganic, organic and metal treated with dyes in black. (S11) a color correction layer having recesses disposed on the upper surface of the transparent substrate and spaced apart from each other at regular intervals by using a mixed composition composed of a transparent material and a selective light absorbing material in an amount of 0.01 to 10 parts by weight relative to 100 parts by weight of the transparent material. Forming; And (S12) forming a color correction light-shielding film by filling the light-shielding material in the groove portion to form an external light shielding portion; high color reproduction contrast enhancement film manufacturing method for a display device comprising the The method of claim 16, The method of forming the recessed portion in the step (S11) is a high color reproduction contrast enhancement film manufacturing method for a display device, characterized in that any one selected from the roll molding method, the hot press method and the injection molding method. The method of claim 17, In the step (S12), the method of filling the light blocking material in the recess is a method of manufacturing a high color reproduction contrast ratio film for a display device, characterized in that any one selected from a wiping method, a silk printing method, and a photosensitive method. (S21) coating a mixed composition comprising a first transparent material and a selective light absorbing material in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the first transparent material on a transparent substrate, and curing the same to form a color correction layer; (S22) forming a transparent layer having recesses on the upper surface of the color correction layer, the recesses being spaced apart from each other at regular intervals on the upper surface by using a second transparent material; And (S23) forming a light shielding layer by filling the light shielding material in the groove portion to form an external light shielding portion; high color reproduction contrast enhancement film manufacturing method for a display device, comprising the step of proceeding. The method of claim 19, The method of forming the recessed portion in the step (S22) is a high color reproduction contrast enhancement film manufacturing method for a display device, characterized in that any one selected from the roll molding method, the hot press method and the injection molding method. The method of claim 19, The method of filling the light blocking material in the recess in the step (S23) is a method of producing a high color reproduction contrast ratio film for a display device, characterized in that any one selected from the wiping method, silk printing method and photosensitive method.

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