KR20080086756A - Optical member for display apparatus, filter for display apparatus having the same, display apparatus having the same and method of manufacturing the same - Google Patents

Abstract

An optical member for a display device, a filter for a display device having the same, a display device having the same, and a method of manufacturing the same are provided to improve brightness and a contrast ratio under a bright room condition by condensing light inside the display device. An optical member for a display device includes a substrate(320), a light condensing unit(340), an external light shielding pattern(360), and a coating layer(380). The substrate is made of transparent resin. The light condensing unit is formed on one surface of the substrate and has a plurality of lenses(342,344). The external light shielding pattern has a plurality of external light shielding units(362) formed between the lenses. The coating layer is formed on a surface of the light condensing unit.

Description

Optical member for display apparatus, filter for display apparatus including same, display apparatus including same and method for manufacturing same {Optical member for display apparatus, filter for display apparatus having the same, display apparatus having the same and method of manufacturing the same}

1 is an exploded perspective view showing a PDP apparatus according to an embodiment of the present invention.

2 is a cross-sectional view illustrating a PDP filter according to an embodiment of the present invention.

3 is a perspective view illustrating an external light shielding layer according to an exemplary embodiment of the present invention.

4 is a cross-sectional view taken along the line II ′ of FIG. 3.

5 is a perspective view illustrating an optical member according to another exemplary embodiment of the present disclosure.

6 is a perspective view illustrating an optical member according to another exemplary embodiment of the present invention.

[Description of Major Symbols in Drawing]

100: PDP device 110: case

120: drive circuit board 130: panel assembly

140: PDP filter 150: cover

200: PDP filter 210: transparent substrate

220: electromagnetic shielding layer 230: external light shielding layer

232: substrate 234: light converging portion

236: external light shielding pattern 238: coating layer

240: protective film 250: color correction layer

260: reflective ring layer 280: panel incident light

290: external environmental light 300, 500, 600: external light shielding layer

320, 520, and 620: base materials 340, 540, and 640: light converging parts

342, 344, 542, 642: Lens 360, 560, 660: External light shielding pattern

362: external light shield 380, 580, 680: coating layer

The present invention relates to an optical member for a display device, a filter for a display device including the same, a display device including the same, and a manufacturing method thereof, and more particularly, to improve contrast ratio and brightness in bright room. The present invention relates to an optical member for a display device, a filter for a display device including the same, a display device including the same, and a manufacturing method thereof.

In general, a plasma display panel (PDP) device is in the spotlight as a next-generation display device because it can satisfy both an enlargement and a thinning at the same time as a cathode ray tube (CRT) representing a conventional display device. The PDP apparatus displays an image using a gas discharge phenomenon, and is excellent in various display capabilities such as display capacity, brightness, contrast, afterimage, viewing angle, and the like. In addition, the PDP device is easier to be enlarged than other display devices, and is considered as a thin light emitting display device having the most suitable characteristics as a high quality digital television in the future.

The PDP device generates a discharge in the gas between the electrodes by a direct current or an alternating current voltage applied to the electrode, and excites the phosphor by the radiation of ultraviolet rays, which emits light.

However, due to its driving characteristics, the PDP device has a high emission amount of electromagnetic waves and near infrared rays, high surface reflection of the phosphor, and color purity of the PDP device due to the orange light emitted from the encapsulated helium (He) or xenon (Xe), which does not reach the cathode ray tube. There is this.

Therefore, electromagnetic waves and near-infrared rays generated in the PDP device may adversely affect the human body and cause malfunction of precision devices such as a wireless telephone or a remote controller. In order to use such a PDP apparatus, it is required to suppress the emission of electromagnetic waves and near-infrared rays emitted from the PDP apparatus below a predetermined value. To this end, in order to shield electromagnetic waves and near infrared rays, and to reduce reflected light and improve color purity, a PDP filter having a function such as electromagnetic shielding, near infrared shielding, light surface reflection prevention and / or color purity improvement is employed.

Such a PDP device is composed of a panel assembly including a discharge cell in which gas discharge occurs, and a PDP filter shielding electromagnetic waves and near infrared rays. Since the PDP filter is mounted on the front of the panel assembly, transparency must be satisfied at the same time.

In the PDP device according to the related art, external environment light may be introduced into the panel assembly through the PDP filter under bright conditions, that is, bright room conditions. In this case, an overlap of incident light generated in the discharge cell in the panel assembly and external environmental light introduced through the PDP filter from the outside occurs. As a result, the contrast ratio is lowered in the bright room condition, resulting in poor display capability of the PDP device.

In addition, when a separate light absorption pattern that absorbs external ambient light is used to increase the contrast ratio, the luminance of the PDP device decreases and the viewing angle becomes narrow.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an optical member for a display device having an improved contrast ratio under bright room conditions by filtering unnecessary wavelengths from panel incident light and shielding against external ambient light. .

The present invention also aims to provide a filter for a display device including the optical member for the display device.

It is also an object of the present invention to provide a display device comprising the filter for the display device.

It is another object of the present invention to provide a method of manufacturing the optical member for a display device.

An optical member for a display device according to an aspect of the present invention includes a substrate made of a transparent resin material, a light converging portion formed on one surface of the substrate, and having a plurality of lenses filled in and filled between the plurality of lenses. An external light shielding pattern consisting of external light shielding parts, and a coating layer formed on the surface of the light focusing portion.

A filter for a display device according to an aspect of the present invention is formed by stacking a plurality of functional members, wherein any one of the functional members is formed of a transparent resin substrate, one surface of the substrate and a plurality of lenses And an external light shielding pattern including a plurality of external light shielding parts filled and filled between the plurality of lenses, and a coating layer formed on a surface of the light focusing part.

The plurality of functional members may independently perform an electromagnetic shielding function, a color correction function, an antireflection function, or the like, or may perform a combined function. At least one functional member of the functional member includes at least one pigment that selectively absorbs light, the pigment is cyanine-based, anthraquinone-based, naphthoquinone-based, phthalocyanine-based, naphthalocyanine-based, dimonium-based, And at least one of nickel dithiol based, azo based, stryl based, phthalocyanine based and methine based dyes.

According to an aspect of the present invention, a display apparatus includes a transparent front substrate and a back substrate coupled to face each other, a panel assembly including a plurality of cells between the front substrate and the back substrate, and a front substrate of the panel assembly. And a display device filter, wherein the display device filter is formed by stacking a plurality of functional members, wherein any one of the functional members is formed of a transparent resin substrate and one surface of the substrate. And an external light shielding pattern formed of a plurality of external light shielding portions formed and filled between the plurality of lenses, and a coating layer formed on a surface of the light focusing portion.

The panel assembly and the filter for the display device may be combined with an adhesive or an adhesive (PSA).

According to an aspect of the present invention, there is provided a method of manufacturing an optical member for a display device, the method including: forming a light concentrator by arranging a plurality of lenses on one surface of a substrate having a transparent resin material, wherein the lens comprises a black material between the plurality of lenses. Forming an external light shielding portion, and forming a coating layer on the surface of the light focusing portion.

The display device used in the present invention is a plasma display panel (PDP) device, an organic light emitting diode (OLED) device, a liquid crystal display (LCD) device, or a field emission device that implements RGB with pixels of a grid pattern. Display) can be applied to various devices. Hereinafter, the present invention will be described using a PDP device and a PDP filter used for convenience of description, but the present invention is not limited thereto and may be applied to the aforementioned various display devices and filters for display devices used therein.

Hereinafter, a PDP apparatus and a PDP filter according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing a PDP apparatus according to an embodiment of the present invention.

Referring to FIG. 1, a structure of a PDP device 100 according to an embodiment of the present invention may include a case 110, a cover 150 covering an upper portion of the case 110, and a driving circuit accommodated in the case 110. The substrate 120 includes a panel assembly 130 including a discharge cell in which a gas discharge phenomenon occurs, and a PDP filter 140.

The PDP filter 140 is disposed above the front substrate of the panel assembly 130. The PDP filter 140 may be spaced apart from the front substrate of the panel assembly 130 or may be disposed in contact with each other. Also, the PDP filter 140 may have side effects such as foreign substances introduced between the panel assembly 130 and the PDP filter 140. To prevent or reinforce the strength of the PDP filter 140 itself may be combined with the front substrate and the adhesive or adhesive.

The PDP filter 140 includes a conductive layer formed of a material having excellent conductivity on the transparent substrate, and the conductive layer is grounded to the case 110 through the cover 150. That is, before the electromagnetic wave generated from the panel assembly 130 reaches the user, it is grounded to the cover 150 and the case 110 through the conductive layer of the PDP filter 140. Discharge gas is enclosed in the discharge cell, and Ne-Xe gas, He-Xe gas, etc. can be used as discharge gas, for example. The panel assembly basically has a light emitting principle such as a fluorescent lamp, and the ultraviolet rays emitted from the discharge gas are converted into visible light by exciting the phosphor layer in the panel assembly with the discharge in the light emitting cell.

2 is a cross-sectional view illustrating a PDP filter according to an embodiment of the present invention.

Referring to FIG. 2, the PDP filter 200 includes functional optical members having various shielding functions on the transparent substrate 210. Examples of the functional optical members include an electromagnetic shielding layer 220, an external light shielding layer 230, And a color correction layer 250 and an antireflection layer 260.

The transparent substrate 210, the electromagnetic shielding layer 220, the external light shielding layer 230, the color correction layer 250, and the anti-reflection layer 260 may be stacked in any order.

Examples of the material of the transparent substrate 210 may include an inorganic compound molding such as glass and quartz and a transparent organic polymer molding. Acrylic or polycarbonate is generally used as the transparent substrate 210 formed of the organic polymer molded product, but the present invention is not limited to these embodiments. The transparent substrate 210 preferably has high transparency and heat resistance, and a polymer molded product and a laminate of the polymer molded product may be used as the transparent substrate 210. As for the transparency of the transparent substrate 210, it is advantageous that the visible light transmittance is 80% or more, and in terms of heat resistance, the glass transition temperature is preferably 50 ° C or more. The polymer molded article may be transparent in the visible wavelength range, and polyethylene terephthalate (PET) is preferable in terms of cost, heat resistance, and transparency, but is not limited thereto. In addition, in some cases, the transparent substrate 210 may be excluded from the configuration of the filter.

The anti-reflection layer 260 prevents the external environment light 290 incident from the viewer's direction from being reflected back to the outside, thereby improving the contrast ratio of the display. In the present embodiment, the anti-reflection layer 260 is formed on the other surface of the transparent substrate 210, but the present invention is not limited to this stacking order. Preferably, as shown in FIG. 2, the anti-reflection layer 260 is effectively formed on the side facing the viewer when the PDP filter 200 is mounted on the PDP device, that is, on the side opposite to the panel assembly side.

The electromagnetic shielding layer 220 serves to block electromagnetic waves generated from the panel assembly. In order to shield the electromagnetic waves, the surface of the display needs to be covered with a highly conductive object. As the electromagnetic wave shielding layer 220 for shielding electromagnetic waves according to an embodiment of the present invention, a multilayer transparent conductive film including a conductive mesh film or a metal thin film and a high refractive index transparent thin film may be used. As the conductive mesh film, generally, a metal mesh ground or a metal coating on a mesh of synthetic resin or metal fiber can be used. As a material of the metal which comprises a conductive mesh film, if the metal which is excellent in electroconductivity and workability, such as copper, chromium, nickel, silver, molybdenum, aluminum, can be used, for example.

In addition, the multilayer transparent conductive film may be a high refractive transparent thin film represented by ITO (Indi㎛ Tin Oxide) for the electromagnetic wave shielding. Examples of the multilayer transparent conductive film include a multilayer thin film in which metal thin films such as gold, silver, copper, platinum, and palladium are alternately stacked with high refractive index transparent thin films such as indium oxide, ditin oxide, and zinc oxide.

Although not shown, the PDP filter 200 according to an embodiment of the present invention may separately include a near infrared shielding layer. The near-infrared shielding layer serves to shield strong near-infrared rays generated from the panel assembly causing malfunction of electronic devices such as wireless telephones and remote controls.

In the embodiment of the present invention, when the electromagnetic shielding layer 220 uses a multilayer transparent conductive film in which a metal thin film and a high refractive index transparent thin film are stacked, the multilayer transparent conductive film shields near infrared rays. Therefore, in this case, two functions of shielding near infrared rays and electromagnetic waves may be performed using only the electromagnetic shielding layer 220 without separately forming the near infrared shielding layer. In this case, of course, the near-infrared shielding layer may be formed separately.

The PDP filter 200 includes a color correction layer 250 that selectively absorbs light of a specific wavelength band. The color correction layer 250 is positioned on one surface of the external light shielding layer 230 in the direction of the panel assembly, but is not limited thereto. The color correction layer 250 changes or corrects the color balance by reducing or adjusting the amount of red (R), green (G), and blue (B) to increase the color reproduction range of the display and improve the sharpness. .

The color correction layer 250 includes various pigments, and such dyes may be used as dyes or pigments. Kinds of pigments include organic pigments having a neon light shielding function such as anthraquinone, cyanine, azo, stryl, phthalocyanine and methine, but the present invention is not limited thereto. Since the type and concentration of the dye are determined by the absorption wavelength, absorption coefficient, and transmission characteristics required in the display, the dye is not limited to a specific value and is not used.

In addition, although not shown, the PDP filter 200 may include a diffusion layer. The diffusion layer prevents moiré or newtoning, which may be caused by interference between incident light and reflected light, when the periodic pattern of the external light shielding layer 230 or the electromagnetic shielding layer 220 is reflected on the front substrate of the panel assembly. Play a role. The diffusion layer may be disposed at any position in the PDP filter 200, but is preferably formed on one surface of the PDP filter 200 adjacent to the panel assembly. The diffusion layer may be included in the PDP filter 200 as a separate layer, or may be included in combination with other optical members.

In this embodiment, the optical members corresponding to the electromagnetic wave shielding function, the antireflection function, the color correction function, and the external light shielding function are separately described as separate ones, but the present invention is not limited thereto. That is, the electromagnetic shielding layer 220, the external light shielding layer 230, the color correction layer 250, and the anti-reflection layer 260 may be composed of the respective optical members as in this embodiment, but differently One member may perform a plurality of functions. For example, the single optical member which performs an anti-reflection-color correction function, the single optical member which performs an external light shielding- color correction-near-infrared shielding function, etc. are mentioned. In this case, the position where the optical members are disposed may be appropriately selected according to the configuration of each optical member.

The external light shielding layer 230 according to the present exemplary embodiment includes a light converging part 234 having a plurality of lenses on one surface of the substrate 232, and a plurality of external light shielding parts filled and filled between the plurality of lenses. The external light shielding pattern 236 and a coating layer 238 formed on the surface of the light focusing portion 234. The external light shielding layer 230 is disposed on an opposite surface of the anti-reflection layer 260 based on the transparent substrate 210. However, the present invention is not limited thereto, and the stacking order and the stacking direction between the optical members are provided as long as the external light shielding layer 230 is disposed so that absorption of the external ambient light 290 and transmission of the panel incident light 280 can occur well. May be variously modified. In the present embodiment, it is preferable that the external light shielding layer 230 is stacked such that the bottom surface of the light converging portion 234 parallel to one surface of the substrate 232 faces the panel assembly direction.

The substrate 232 is a plate-like support made of a transparent material that transmits visible light, for example, polyethylene terephthalate (PET), polycarbonate (PC), polyvinyl chloride (PVC), or the like. Can be made.

The PDP filter 200 includes a protective film 240 formed on a surface formed of the light condenser 234, the coating layer 238, and the external light shielding pattern 236. That is, the protective film 240 is formed in parallel with the other optical member while covering the curved surface of the shape of the lens so that the external light shielding layer 230 can be bonded to the other optical member. The protective film 240 may additionally have an electromagnetic shielding function, a color control function, or a combination thereof.

The external light shielding layer 230 absorbs external light to prevent external environmental light 290 from entering the panel assembly and totally reflects the panel incident light 280 emitted from the panel assembly toward the viewer. Thus, a high transmittance to visible light and a high contrast ratio can be obtained.

Hereinafter, the external light shielding layer will be described in more detail.

3 is a perspective view illustrating an external light shielding layer according to an exemplary embodiment of the present invention. 4 is a cross-sectional view taken along the line II ′ of FIG. 3.

3 and 4, the external light shielding layer 300 includes a substrate 320, a light converging portion 340 made of a plurality of lenses 342, and an external light shielding made of a plurality of external light shielding parts 362. The pattern 360 and the coating layer 380 is included. The light focusing unit 340 is formed by arranging a plurality of semi-cylindrical lenses 342 on one surface of the substrate 320 in parallel to the long side of the substrate 320. In the present embodiment, the cross section of the lenses is hemispherical, but the present invention is not limited thereto, and may vary in a semi-elliptic, elliptical, rugby ball, and the like. The lenses 342 constituting the light converging portion 340 are adjacent to each other and a groove is formed between the adjacent lenses 342 and 344. The light absorber is filled in the groove to form the external light shield 362, and the external light shield 362 forms a stripe type external light shield pattern 360 arranged in parallel with the long side of the substrate 320. In the present embodiment, the bottom surfaces of the lenses 342 are in contact with the adjacent lenses, but the present invention is not limited thereto, and the lenses may be arranged to be spaced apart by a predetermined distance from the adjacent lenses at a predetermined distance. The light absorber may be filled in a space formed between the adjacent lenses.

The width H ₁ of the lens 342 varies depending on the refractive index of the lens and the interval of the external light shielding pattern, but is in the range of 20 to 150 μm.

The thickness H ₂ of the external light shielding part 362 is in a range of 1 to 170 μm, and the external light shielding part 362 may be filled with a light absorber including a black inorganic material, a black organic material, or a metal, but black carbon (black carbon) is preferred.

The thickness H ₃ of the coating layer 380 is in the range of 1 to 80 μm, and the coating layer 380 serves to selectively absorb light of an unnecessary wavelength. The coating layer 380 contains a selective wavelength absorbing material, which may be a near infrared absorbing material or a color correction pigment. The near-infrared absorbing material includes at least one of cyanine-based, anthraquinone-based, naphthoquinone-based, phthalocyanine-based, naphthalocyanine-based, dimonium-based, and nickel dithiol-based dyes. The color correction pigment may include at least one of anthraquinone-based, cyanine-based, azo-based, stryl-based, phthalocyanine-based, and methine-based dyes.

The coating layer 380 is preferably formed to cover the exposed surface of the light focusing portion 340, the present invention is not limited to this, the scope of the coating layer is within the range that can be carried out the purpose of the present invention Can be changed accordingly.

The refractive index of the external light shielding portion 362 is smaller than the refractive index of the lens 342. The external environment light may be refracted by the lens 342 to be focused on the external light shielding pattern 360, so that the external light may be efficiently absorbed, thereby reducing reflection by external light of the PDP device and increasing the contrast ratio.

In addition, the light converging unit 340 collects the incident light of the panel, thereby increasing the brightness of the display. The coating layer 380 formed on the surface of the light focusing unit 340 may perform a filter function for controlling unnecessary colors. Accordingly, the external light shielding layer according to the present invention can perform not only an external light shielding function, but also a function of selectively absorbing unnecessary colors while collecting panel incident light.

The optical characteristics (A) of the external light shielding layer according to the present embodiment and the optical properties (B) of the wedge-shaped external light shielding film having no light converging portion and a coating layer and having an external light shielding pattern in a stripe form parallel to one side of the substrate are compared. One result is as follows. Luminance was measured with a luminance meter of 1 degree at a distance of 1.5m under bright room conditions (150 lux), and the viewing angle was measured by a candela measuring integrating sphere according to an angle called EZ-contrast.

Viewing angle (FWHM) Luminance A 67 degrees 620 nit B 75 degrees 680 nit

Next, an optical member for a display apparatus according to other embodiments of the present invention will be described. Descriptions on parts overlapping with the above description will be omitted.

5 is a perspective view illustrating an optical member according to another exemplary embodiment of the present disclosure.

Referring to FIG. 5, the external light shielding layer 500 includes a substrate 520 made of a transparent resin material and a light focusing unit 540 including lenses 542 arranged at regular intervals on one surface of the substrate 520. And an external light shielding pattern 560 formed to fill a space between the adjacent lenses 542, and a coating layer 580 formed on a surface of the light converging part 540. The lens 542 has a hemispherical shape, and when an arbitrary lens is selected and the focal points of the adjacent lenses are connected to each other, the connecting line forms a quadrangle. However, the arrangement of the lens 542 may be adjusted in a form suitable for increasing light transmittance and blocking efficiency of external ambient light.

The shape of the external light shielding pattern 560 may vary according to the arrangement of the lens 542. In the present embodiment, when the top surface of the external light shielding layer 500 is vertically viewed downward, circular holes formed by the light focusing part 540 are drilled at regular intervals in the horizontal and vertical directions, and the remaining space is shielded from the external light. In the form occupied by the pattern 560, the external light shielding pattern 560 is a mesh or mesh type.

6 is a perspective view illustrating an optical member according to another exemplary embodiment of the present invention.

Referring to FIG. 6, the external light shielding layer 600 includes a substrate 620 made of a transparent resin material and a light focusing unit 640 including lenses 642 arranged at regular intervals on one surface of the substrate 620. And an external light shielding pattern 660 formed to fill a space between the adjacent lenses 642, and a coating layer 680 formed on a surface of the light converging part 640. The lens 642 has a hemispherical shape, and when an arbitrary lens is selected and the focal points of the lenses surrounding the adjacent lenses are connected to each other, the connecting line forms a hexagon, but the present invention is not limited thereto.

Hereinafter, the manufacturing method of the optical member for display apparatuses which concerns on this invention is demonstrated.

After forming a light converging portion by arranging a plurality of lenses on one surface of the base material having a transparent resin material, forming an external light shielding portion containing a black material between the plurality of lenses, and to form a coating layer on the surface of the light converging portion do. As the black material, a metal, a black organic material, or an inorganic material may be used, and preferably black carbon may be used. After filling the polymer resin containing the black carbon in the space between the lenses, the resin is cured to form an external light shielding portion. When the coating layer is formed, the patterned mask may be covered and then coated to coat a desired range on the surface of the light concentrator.

As described above, according to the optical member for a display device according to the present invention, efficient absorption of external ambient light is possible and the viewing angle can be widened. In addition, by condensing the internal light of the display, the luminance may be improved, the contrast ratio may be increased in a bright room condition, and at the same time, the color filter may filter an unnecessary wavelength band. As described above, the optical member for a display apparatus according to the present invention can perform multiple functions in one optical member, which is efficient and economical because the manufacturing cost can be reduced.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

Claims (20)

Base material of transparent resin material; A light concentrator formed on one surface of the substrate and having a plurality of lenses; An external light shielding pattern consisting of a plurality of external light shielding portions formed between the plurality of lenses; And Optical member for a display device comprising a coating layer formed on the surface of the light focusing portion. The method of claim 1, The optical focusing unit is an optical member for a display device, characterized in that the semi-cylindrical or hemispherical lens is arranged in a predetermined cycle on one surface of the substrate. The method of claim 1, An optical member for a display device, characterized in that the cross section of the lens is hemispherical or semi-elliptic. The method of claim 1, Optical member for a display device, characterized in that the width of the lens is 20 to 150㎛. The method of claim 1, The thickness of the external light shielding portion is 1 to 170㎛ optical member for display device. The method of claim 1, The thickness of the coating layer is an optical member for a display device, characterized in that 1 to 80㎛. The method of claim 1, The external light shielding part includes a black inorganic material, a black organic material, or a metal, wherein the optical member for a display device. The method of claim 1, The refractive index of the external light shielding portion is smaller than the refractive index of the lens. The method of claim 1, The external light shielding pattern is a stripe type or a mesh type optical member for a display device. The method of claim 1, And the coating layer contains a selective wavelength absorbing material. The method of claim 10, The selective wavelength absorbing material is a near-infrared absorbing material or a color correction dye. The method of claim 11, The near-infrared absorbing material includes at least one of cyanine-based, anthraquinone-based, naphthoquinone-based, phthalocyanine-based, naphthalocyanine-based, dimonium-based, and nickel dithiol-based dyes. The method of claim 11, The color compensating dye includes at least one of anthraquinone-based, cyanine-based, azo-based, stryl-based, phthalocyanine-based, and methine-based dyes. The method of claim 1, The coating layer is an optical member for a display device, characterized in that formed to cover all the exposed surface of the light converging portion. The method of claim 1, The optical member for display device further comprises a protective film formed on a surface consisting of the light converging portion, the coating layer, and the external light shielding pattern. In the filter for a display device formed by stacking a plurality of functional members, The functional member of any one of the functional members, Base material of transparent resin material; A light concentrator formed on one surface of the substrate and having a plurality of lenses; An external light shielding pattern consisting of a plurality of external light shielding portions formed between the plurality of lenses; And Filter for display device comprising a coating layer formed on the surface of the light converging portion. The method of claim 16, At least one functional member of the functional members comprises at least one pigment that selectively absorbs light. A panel assembly including a transparent front substrate and a back substrate coupled to face each other and a plurality of cells between the front substrate and the back substrate; And Display device comprising a filter for a display device according to claim 16 disposed opposite the front substrate of the panel assembly. The method of claim 18, And the panel assembly and the filter for the display device are combined with an adhesive or an adhesive. Forming a light focusing part by arranging a plurality of lenses on one surface of a substrate having a transparent resin material; Forming an external light shield containing a black material between the plurality of lenses; And Forming a coating layer on the surface of the light focusing portion manufacturing method of an optical member for a display device.

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