KR20130124779A - Substrate module for display device and display device comprising the same - Google Patents

Abstract

The present invention relates to a substrate module for an image display device and an image display device including the same and, more specifically, to a substrate module for an image display device and an image display device including the same capable of enlarging a viewing angle for a three-dimensional image because crosstalk rarely occurs as a color filter, a transparent substrate, and a patterned retarder are arranged from a light source in order and the transparent substrate includes an air gap in a region corresponding to patterns of the patterned retarder and a boundary between the patterns.

Description

Substrate module for display device And Display device comprising the same}

The present invention relates to a substrate module for an image display device and an image display device having the same. More specifically, the present invention relates to a substrate module for an image display device, which prevents crosstalk, and to which a viewing angle is greatly enlarged in a 3D image, and an image display device having the same.

2. Description of the Related Art [0002] In recent years, an image display device in which a conventional CRT monitor is dominant has been rapidly developed, and a wider, lighter, and even bendable image display device such as an LCD, an OLED, In addition, the image represented by the image display device has reached a level capable of not only a planar two-dimensional image but also a three-dimensional image in which a viewer can feel a three-dimensional effect.

The general principle of the three-dimensional image display method is to make a human feel a three-dimensional effect by using the effect of the spatial difference on the left and right retinas caused by the left and right eyes looking at the object in one direction. Therefore, a method of displaying different images, that is, stereoscopic images (three-dimensional images), in both left and right eyes using this effect has been used. The stereoscopic image (3D image) has been developed into a method of wearing glasses and a method of wearing glasses according to a display method, and the most representative method of viewing without glasses is a lenticular plate representing only vertical parallax. It is a method of viewing a stereoscopic image by attaching it to a display device, and further developing into a multi-view image display mask such as a multi-view or ultra-multi-view IP (Integral Photography) plate, a cross lenticular plate, or a rectangular lens plate, which express vertical and horizontal parallax. It became.

As such, the 3D image display method is divided into a method of observing a 3D image with glasses and a method of observing a 3D image without glasses.

A method of observing a 3D image by wearing glasses is a method of observing a 3D image in a large space such as a theater and uses a binocular stereoscopic image (3D image) display method. In addition, as a method of viewing without wearing glasses, there is a method in which a single viewer or a few viewers observe a 3D image at a position where an observation position is determined.

By the way, as a typical method of displaying a three-dimensional image by the polarization method, there was a method that can observe the three-dimensional image by attaching a retardation film to the liquid crystal display device, according to this method the viewer wearing a polarized glasses In this state, the 3D image is observed. However, when the retardation film is attached to the image display device, the angle of view becomes smaller, and thus, many viewers cannot observe the 3D image, and also an individual (individual viewer) can observe the 3D image. Due to this narrowing, the range of movement is limited, and therefore, individual viewers have to observe a 3D image at a fixed position.

In order to solve this problem, Korean Patent Laid-Open No. 2011-0114017 attempts to minimize cross-talk by forming a third pattern for blocking light between two different patterns of the patterned retarder. The technique is disclosed.

However, when the third pattern is formed in the patterned retarder, the image signal light is absorbed in the third pattern, and thus the overall brightness of the screen is lowered.

In addition, there have been proposals to increase the width of the black matrix or to reduce the thickness of the transparent substrate of the color filter module. However, there is a limit to increasing the width of the black matrix. This has the disadvantage of occurring.

Therefore, no effective solution for widening the viewing angle of three-dimensional images has yet been proposed.

Patent Document 1: Korean Patent Publication No. 2011-0114017

An object of the present invention is to provide a substrate module for an image display device that can significantly reduce cross-talk phenomenon.

An object of the present invention is to provide a substrate module for an image display device having an extended viewing angle.

Another object of the present invention is to provide an image display device having the above-described substrate module.

1. A color filter, a transparent substrate, and a patterned retarder are sequentially arranged from a light source, and the transparent substrate has an air gap in an area corresponding to a boundary between the pattern of the patterned retarder and the pattern. Substrate module for video display device.

2. In the above 1, the air gap is a substrate module for a video display device is a region where the transparent substrate is cut.

3. In the above 1, the air gap is a substrate module for a video display device is a region formed with a groove on one surface of the transparent substrate.

4. In the above 3, wherein the cross section of the groove portion is at least one selected from the group consisting of a rectangular, triangular, semi-elliptic and the end of the triangular or semi-circular rod-shaped substrate module.

5. In the above 3, wherein the groove portion is formed on the surface of the transparent substrate in the direction in which the patterned retarder is disposed or the opposite surface of the display module substrate module.

6. The substrate module of claim 1, wherein the air gap is filled with a material having a refractive index smaller than that of the transparent substrate.

7. In the above 1, the thickness of the transparent substrate is 100 to 1,000 ㎛ substrate module for a video display device.

8. The substrate module of claim 1, wherein the black matrix area between each pixel of the color filter is disposed to correspond to the air gap portion.

9. The substrate module according to the above 1, wherein the width of the air gap is equal to or less than the width of the black matrix between each pixel of the color filter.

10. The substrate module of claim 1, wherein the transparent substrate is formed of transparent glass or transparent polymer.

11. The substrate module according to 1 above, wherein the patterned retarder has one pattern and another pattern adjacent thereto different from each other.

12. The substrate module of claim 1, wherein the patterned retarder is one pattern and another pattern adjacent thereto is perpendicular to each other.

13. The substrate module of claim 1, further comprising a surface treatment layer on the surface of the patterned retarder.

14. The substrate module of claim 1, further comprising light scattering means on a surface from which the light of the patterned retarder is emitted.

15. The substrate module of claim 1, wherein the polarizing film is interposed between the transparent substrate and the patterned retarder.

16. In the above 15, the polarizing film is a substrate module for a video display device that is provided with a polarizer alone or a polarizer and a protective film.

17. An image display device having the substrate module of any one of 1 to 16 above.

In the substrate module of the present invention, since the light is reflected at a portion corresponding to the boundary between the pattern of the retarder and the pattern through the air gap of the transparent substrate, cross-talk is hardly generated, and thus the viewing angle of the 3D image is increased. You can zoom in.

Since the substrate module of the present invention has almost no light loss, it is possible to implement an image display device capable of representing a 3D image having excellent brightness of a screen.

The substrate module of the present invention can effectively prevent the confusion phenomenon without widening the width of the black matrix, and does not need to reduce the thickness of the transparent substrate, so that light leakage due to the bending of the panel does not occur.

1 is an exploded perspective view schematically illustrating a structure of a substrate module for an image display device according to an embodiment of the present invention.
Figure 2 is a vertical cross-sectional view schematically showing one embodiment having a cut air gap of the substrate module of the present invention.
3 is a schematic diagram of a cross-talk prevention mechanism by the substrate module of the present invention.
4 is a cross-sectional view schematically showing an embodiment having an air gap in the form of a groove of the substrate module of the present invention.
5 is a view schematically showing a cross section of a groove of an air gap according to the present invention.
6 is a cross-sectional view schematically showing an embodiment in which the substrate module of the present invention is provided with a polarizing film.
7 is a schematic cross-sectional view of an embodiment in which the substrate module of the present invention is provided with a polarizing film and a color filter.
8 is a graph showing the definition of the degree of confusion (ratio of luminance) in the present invention and the degree of confusion with respect to the vertical viewing angle of Comparative Example 1 derived accordingly.
It is a graph which showed the mixed state according to the vertical viewing angle of the comparative example 1, and shows the result.
9 is a graph showing the results of calculating the luminance of the left eye and the right eye according to the vertical viewing angle in the region where the left eye light is emitted in Example 1 and Comparative Example 1. FIG.

According to the present invention, a color filter, a transparent substrate, and a patterned retarder are sequentially arranged from a light source, and the transparent substrate has an air gap in an area corresponding to a boundary between the pattern of the patterned retarder and the pattern. The present invention relates to a substrate module for an image display device capable of enlarging a viewing angle with respect to a 3D image because cross-talk is hardly generated, and an image display device having the same.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing a schematic structure of an embodiment of a substrate module for a video display device of the present invention. However, the drawings used in the present specification are provided for easy understanding of the present invention, and thus the scope of the present invention is not limited to the matters described in the drawings and is not interpreted.

The substrate module for an image display device of the present invention is a substrate module in which a color filter 400, a transparent substrate 100, and a patterned retarder 200 are sequentially arranged from a light source. In the present invention, the transparent substrate 100 is characterized by having an air gap in an area corresponding to the boundary between the pattern of the patterned retarder and the pattern. FIG. 2 is a schematic cross-sectional view (based on A-A 'axis of FIG. 1) of a substrate module for an image display device as an embodiment of the present invention. According to the exemplary embodiment of the present invention, the arrangement direction of the subpixels R, G, and B in the pixel 410 of the color filter 400 is parallel to the length direction of the patterns 210 and 220 of the patterned retarder 200. Although the case where the position of the subpixels R, G, and B is perpendicular to the longitudinal direction of the patterns 210 and 220 is also included in the present invention.

The transparent substrate 100 according to the present invention includes an air gap 110 in a region corresponding to a boundary between two different patterns 210 and 220 of the patterned retarder 200. The air gap 110 prevents cross-talk by generating a difference in refractive index between the transparent substrate 100 and the air.

Figure 3 schematically shows a cross-talk prevention mechanism according to the present invention. Referring to FIG. 3, a 3D image is recognized by projecting different images on the left and right eyes, and the different images pass through two different patterns 210 and 220 of the patterned retarder 200, respectively. Done. For example, the image projected on the left eye passes through the first pattern 210, and the image projected on the right eye passes through the second pattern 220. However, since light emitted from the light source does not actually proceed in the vertical direction, in the conventional case, light that should pass through the first pattern 210 may pass through the second pattern 220 (dotted arrow in FIG. 3). In this case, a mixed phenomenon occurs.

However, the present invention provides an air gap 110 in the transparent substrate region at a position corresponding to the boundary between the patterns of the patterned retarder 200, thereby generating a difference in refractive index between the transparent substrate 100 and air. Accordingly, by reflecting the light (dashed line arrow in FIG. 3) directed to the adjacent pattern back toward the transparent substrate 100 (the dashed line arrow in FIG. 3), the converging phenomenon can be effectively prevented.

The air gap 110 formed on the transparent substrate 100 may be formed in various forms. For example, as shown in FIG. 2, the transparent substrate 100 may have a cut shape, or as shown in FIG. 4, may have a shape of the groove 120.

When the air gap 110 has a shape in which the transparent substrate 100 is cut, a method of cutting the region in which the air gap 110 is to be formed after adhering the transparent substrate 100 to the substrate, or the bar already cut ( The transparent substrate 100 in the form of a bar) is adhered to correspond to each pattern region of the patterned retarder 200, and when the bar of another transparent substrate 100 is disposed next to the adjacent transparent substrate 100 It can be prepared by a method of bonding to have a bar and an air gap.

When the air gap 110 has the shape of the groove portion 120, the portion where the groove portion 120 is formed on the transparent substrate 100 is disposed as a patterned retarder as shown in FIG. 4A. It may be a surface in the direction shown, or may be the opposite surface (direction in which the light source is disposed) as shown in (b). The formation position of the groove portion 120 can be appropriately selected according to necessity, such as the use of the specific image display device to which the substrate module 10 is applied, the suppression efficiency of the mixed shape, and the like. The groove 120 may be formed by bonding the transparent substrate 100 to the substrate to form the groove 120, or first forming the groove 120 on the transparent substrate 100 and then attaching the substrate to the substrate. Can be.

Since the depth of the groove portion 120 can be appropriately selected by those skilled in the art within a range of values that can effectively prevent the mixing phenomenon, it is not particularly limited.

A cross-sectional view of the groove 120 may have various forms according to the needs of a specific image display device to be applied to the substrate module 10, ease of manufacturing method, and the like, and the present invention is not particularly limited thereto. A representative example of the groove 120 is shown schematically in FIG. 5. Referring to Figure 5, the groove portion 120 has a cross section (a), a triangle (b), a semi-elliptic (c), the end of the bar (d), the end of the semi-circular bar (e), etc. May be used alone or in combination of two or more thereof, but is not limited thereto.

In another aspect of the present invention, the air gap 110 may be filled with a material having a smaller refractive index than the transparent substrate 100 on which the air gap 110 is formed. As shown in FIG. 3, in the present invention, the reflection of the air present in the air gap 110 has a refractive index of the transparent substrate 100 at the interface between the transparent substrate 100 and the air gap 110. It happens because it is smaller. Therefore, even if the air gap 110 is filled with a material having a smaller refractive index than the transparent substrate 100 in addition to air, the object of the present invention can be achieved. The material filled in the air gap 110 may be used without particular limitation as long as the refractive index is lower than that of the transparent substrate 100.

In the present invention, the thickness of the transparent substrate 100 may have various values depending on the specific use of the image display apparatus to be applied, and is not particularly limited, but may be 100 to 1,000 μm.

In the present invention, the width of the air gap 110 of the transparent substrate 100 is preferably equal to or less than the width of the black matrix between each pixel of the color filter. If the width of the air gap exceeds the width of the black matrix, confusion may occur. In the present invention, if the air gap is present, a difference in refractive index with the transparent substrate 100 is generated and reflection occurs into the transparent substrate 100, which is the object of the present invention. Therefore, the lower limit of the width of the air gap is particularly limited. It doesn't work. For example, it may be 1 μm, preferably 0.001 μm, but is not limited thereto. However, the above considerations do not consider the wave characteristics of the light. Considering the wave characteristics of the light, if the width of the air gap 110 is smaller than the wavelength of the light passing through, the effect desired in the present invention may not appear. In this aspect, the lower limit of the width of the air gap 110 can be set within a range in which the wavelength of light does not impair the object of the present invention. For example, the width of the air gap 110 may have a width of one or more times, preferably five or more times, more preferably ten or more times the wavelength of light passing through the transparent substrate 100.

The transparent substrate 100 may be adopted without particular limitation as long as it is a material used as a transparent substrate in the art. For example, it may be a transparent glass or a transparent polymer and specific materials can be determined by those skilled in the art as needed.

The substrate module 10 of the present invention includes a patterned retarder 200 on an upper portion (opposite side on which the light source is located) of the transparent substrate 100. The patterned retarder 200 has a structure in which the first pattern 210 and the second pattern 220 through which different light beams projected from the left eye and the right eye pass are alternately arranged.

The two different patterns may be patterns having different phase difference values or optical axes in different directions. In another aspect of the present invention, when the first pattern 210 and the second pattern 220 have different optical axes, the optical axes of the patterns may be substantially orthogonal to each other. In the present invention, "substantially orthogonally" means including perfectly mathematically orthogonally, and not including mathematically perfectly orthogonally, but also including a range that is recognized as practically orthogonal in the art.

The width of each pattern is 200 times to 1000 times, preferably 300 times to 700 times, the thickness of the patterned retarder 200, which is emitted from the pattern of the position where light is incident on the patterned retarder 200. Even if the pattern positions are different from each other, it is preferable in view of the fact that the influence thereof can be substantially ignored. In this aspect, the thickness of the patterned retarder 200 is preferably 0.1 to 10㎛, but is not limited thereto.

The patterned retarder 200 may be used in the art without particular limitation. For example, it can obtain by hardening | curing a photocurable liquid crystal composition.

If necessary, the surface of the patterned retarder 200 according to the present invention may further include a surface treatment layer, thereby reinforcing various functions. Such a surface treatment layer may be adopted without limitation a variety of functional layers used in the art. For example, an anti-fog layer, an anti-glare layer, and the like, but are not limited thereto. The surface treatment layer may be formed by adhering to the patterned retarder 200 after being manufactured as a separate film. The surface treatment layer may be formed by applying the composition for forming the surface treatment layer to the patterned retarder 200 and drying the same. It may be. In terms of thinning, it is preferable to apply the composition for forming the surface treatment layer to the patterned retarder 200 and to dry it.

If necessary, light scattering means may be further provided on the surface from which the light of the patterned retarder 200 is emitted. Accordingly, light may pass through the light scattering means after passing through the patterned retarder 200. By providing such light scattering means, the uniformity of the light emitted can be improved. Light-scattering means can adopt light-scattering means known in the art without limitation, for example, a pattern whose cross-sectional shape is part of a circle is preferable, for example, it can achieve lens shape (lenticular shape), such as semicircle and semi-ellipse.

In the present invention, the color filter 400 may be disposed between the light source (not shown) and the transparent substrate 100. In the color filter according to the present invention, color filters known in the art may be used without particular limitation.

1 and 2, the color filter 400 includes a pixel 410 and a black matrix 420 that distinguishes between the pixels 410. The pixel 410 is a part for determining the color of light, and is composed of subpixels of red (R), green (G), and blue (B). There is also a black matrix (not shown) that distinguishes each subpixel between the subpixels.

In the present invention, when the color filter 400 is disposed between the light source and the transparent substrate 100, the area of the black matrix 420 between each pixel 410 of the color filter 400 is the air gap 110. It is preferable to dispose to correspond to the point of view to effectively prevent the mixing phenomenon.

In the present invention, if necessary, various film layers may be interposed between the transparent substrate 100 and the patterned retarder 200, and as a representative example, the polarizing film 300 as schematically illustrated in FIG. 6. ) May be intervened. 7 illustrates an embodiment of the present invention in which the color filter 400 is provided below the transparent substrate 100.

As the polarizing film 300 according to the present invention, the polarizer may be used alone or in a form in which a protective film is attached to the polarizer.

The polarizer may be used without limitation the polarizer used in the art. A commonly used polarizer is one in which a dichroic dye is adsorbed and oriented on a stretched polymer film.

 The polymer film constituting the polarizer is not particularly limited as long as it is a film which can be dyed with a dichroic substance such as iodine. Specifically, the polymer film may be a polyvinyl alcohol film, an ethylene-vinyl acetate copolymer film, an ethylene-vinyl alcohol copolymer film , Cellulose films, partially saponified films thereof, and the like; Or a dehydrated polyvinyl alcohol film, a dehydrochloric acid-treated polyvinyl alcohol film, and the like. Of these, a polyvinyl alcohol-based film is preferable because it has an excellent effect of enhancing the uniformity of the degree of polarization in the plane and is excellent in dye affinity for a dichroic substance.

More preferably, it may be a polyvinyl alcohol-based film obtained by saponifying a polyvinyl acetate resin. Examples of the polyvinyl acetate resin include polyvinyl acetate, which is a homopolymer of vinyl acetate, and copolymers of vinyl acetate and other monomers copolymerizable therewith. Other monomers copolymerizable with vinyl acetate include acrylamide monomers having an unsaturated carboxylic acid type, an unsaturated sulfonic acid type, an olefin type, a vinyl ether type, and an ammonium group.

The polyvinyl alcohol resin may also be modified. For example, polyvinyl formal or polyvinyl acetal modified with aldehydes may be used. The saponification degree of the polyvinyl alcohol-based resin is usually 85 to 100 mol%, preferably 98 mol% or more. The polymerization degree of the polyvinyl alcohol-based resin is usually 1,000 to 10,000, preferably 1,500 to 5,000.

What formed such a polyvinyl alcohol-type resin into a film is used as a raw film of a polarizer. The method of forming the film of the polyvinyl alcohol-based resin is not particularly limited, and a known method can be used. The thickness of the original film is not particularly limited, and may be, for example, 10 to 150 mu m.

The polarizer is usually produced by a process of uniaxially stretching a polyvinyl alcohol film as described above, dyeing with a dichroic dye and adsorbing, treating with an aqueous solution of boric acid, and washing and drying. The thickness of the polarizer produced as described above is preferably 5 to 40 mu m.

When the polarizing film 300 of the present invention is provided with a polarizer and a protective film, the polarizer and the protective film may be used without particular limitation the adhesive means used in the art. For example, an aqueous adhesive, an organic adhesive, a photocurable adhesive, or the like may be used, but is not limited thereto.

As the protective film used in the polarizing plate 300 of the present invention, a protective film used in the art may be used without particular limitation. Preferably, a film excellent in transparency, mechanical strength, thermal stability, moisture shielding, isotropy, etc. may be used, and more specifically, a polyester-based such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, polybutylene terephthalate, etc. Suzy; Cellulose-based resins such as diacetylcellulose and triacetylcellulose; Polycarbonate resin; Acrylic resins such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; Styrene resins such as polystyrene and acrylonitrile-styrene copolymer; Polyolefin resins such as polyethylene, polypropylene, cyclo- or norbornene-structured polyolefins, ethylene-propylene copolymers; Vinyl chloride resin; Amide resins such as nylon and aromatic polyamide; Imide resin; Polyether sulfone type resin; Sulfone based resin; Polyether sulfone type resin; Polyether ether ketone resin; A sulfided polyphenylene resin; Vinyl alcohol type resin; Vinylidene chloride resins; Vinyl butyral resin; Allylate series resin; Polyoxymethylene type resin; Epoxy resin, and the like, and a film composed of the blend of the thermoplastic resin may also be used. Further, a film made of a thermosetting resin such as (meth) acrylic, urethane, acrylic urethane, epoxy, or silicone or a film made of an ultraviolet curable resin may be used.

Among these films, films that are more commonly used include films of TAC (triacetyl cellulose), cyclo-olefin polymer (COP), and poly (methyl methacrylate) polymers.

In the substrate module 10 of the present invention, a light source (not shown) is located on the side opposite to the side where the patterned retarder of the transparent substrate is disposed. In one aspect of the present invention, when displaying a color in the light source itself, such as some image display apparatus using OLED as a light source, a color filter may not be required between the light source and the substrate module 10 of the present invention.

The substrate module 10 of the present invention described above may be usefully used in an image display device. Applicable video display device is not limited to a specific one, but specifically, for stereoscopic image display or transflective liquid crystal display device, inorganic / organic EL display device, flexible display device, LED, OLED, FED, VFD, plasma display device And the like can be used.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative of the invention and are not intended to limit the scope of the claims. It will be apparent to those skilled in the art that such variations and modifications are within the scope of the appended claims.

Example  One

TracePro software uses a structure of a color filter, a transparent glass substrate having an air gap in a cut shape on the black matrix of the color filter, and a patterned retarder in which a pattern boundary is located in an area corresponding to the air gap. Was designed.

Specifically, the pixel width of the color filter is 630㎛, the black matrix width is 120㎛, the refractive index of the transparent glass substrate is 1.51, the thickness of the transparent glass substrate is 520㎛, the width of the cut air gap is 120㎛ Set. In addition, the light source was set to lambertian type, the flux of flux 1 watt, the number of rays 1,000,000 pieces.

Example  2

It carried out similarly to Example 1 except having set the width of the air gap to 60 micrometers.

Example  3

It carried out similarly to Example 1 except having set the width of the air gap to 10 micrometers.

Example  4

It carried out similarly to Example 1 except having set the width of the air gap to 1 micrometer.

Example  5

The air gap was formed into a groove having a rectangular cross section, and the same procedure as in Example 1 was conducted except that the width was set to 10 µm and the depth to 420 µm.

Example  6

It carried out similarly to Example 5 except having set the depth of the air gap groove part to 260 micrometers.

Example  7

The air gap was formed into a groove having a triangular cross section, and the same operation was performed as in Example 1 except that the bottom side was set to 120 µm and the depth was set to 520 µm.

Example  8

It carried out similarly to Example 7 except having set the bottom side of the air gap groove part to 10 micrometers.

Comparative Example  One

The same procedure as in Example 1 was carried out except that a flat transparent glass substrate having no air gap was used.

Test Example

< Confused  Measurement method>

FIG. 8 schematically shows the definition of the degree of confusion (ratio of luminance) in the present invention.

Referring to FIG. 8, the degree of confusion is generated by light emitted in correspondence with each pattern of the retarder R patterned by the color filter F as shown in (1) (light represented by dotted lines and Regarding the luminance of the mixed state in which light represented by a solid line) is simultaneously present in any pattern of the patterned retarder R, the retarder (patterned in the color filter F as shown in (2)) is shown. It can be represented by the ratio ((2) / (1)) of the luminance when light is emitted only to one pattern portion of R).

The lower graph of FIG. 8 measures and shows the degree of mixed light (ratio of luminance) with respect to the upper and lower viewing angles (°) according to the method described in Comparative Example 1.

< Examples and Comparative example Confusion  Accuracy measurement>

The calculation for the embodiment was calculated using the light tool software, which is an optical design program, to calculate the degree of mixing according to the vertical viewing angles of Examples 1 to 8 and Comparative Example 1 according to the measuring method, and the results are shown in Tables 1 and 9 below. Indicated.

Angle
(°) Comparative Example 1 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 85 0.7901 0 0 0 0 0 0.4131 0 0 80 0.6931 0 0 0 0 0.0844 0.1849 0 0 75 0.5181 0 0 0 0 0.0782 0.2721 0 0 70 0.5853 0 0 0 0 0.0273 0.2441 0 0 65 0.5105 0 0 0 0 0 0.1705 0.0447 0 60 0.4805 0.0658 0.033 0.0024 0 0.0046 0.1713 0.0685 0 55 0.4188 0.0909 0.0433 0.0072 0.002 0.0163 0.1857 0.0638 0.0095 50 0.3909 0.0798 0.0448 0.0051 0 0.0107 0.1332 0.0809 0.008 45 0.3439 0.0369 0.0298 0.0059 0.0015 0.0131 0.1206 0.044 0.0038 40 0.2813 0.012 0.0165 0.0077 0 0.0193 0.1218 0.0507 0.0103 35 0.2419 0.0241 0.0013 0.0011 0 0.0082 0.0754 0.0897 0.003 30 0.1869 0.0497 0.0151 0 0 0 0.045 0.0894 0 25 0.1431 0.0589 0.0282 0.0023 0 0.0052 0.0233 0.0977 0.003 20 0.0971 0.0634 0.0286 0.0051 0 0.0112 0.0113 0.0753 0.0107 15 0.0474 0.0613 0.0326 0.0071 0.0009 0.0156 0.0156 0.1009 0.0079 10 0.0082 0.0398 0.0259 0.0042 0.0006 0.0091 0.0091 0.0946 0.0102 5 0 0.0128 0.0125 0.0025 0.0008 0.0052 0.0052 0.0472 0.0095 0 0 0.0016 0.0016 0.0007 0 0.0017 0.001 0.0093 0.0053 -5 0 0.0136 0.0126 0.0034 0 0.0073 0.0073 0.0425 0.0074 -10 0.0067 0.0376 0.0235 0.0037 0.0007 0.008 0.008 0.083 0.0051 -15 0.049 0.0602 0.0302 0.0064 0 0.0138 0.0138 0.0912 0.0079 -20 0.0951 0.063 0.039 0.0073 0.0011 0.0156 0.0157 0.1123 0.0105 -25 0.1497 0.0562 0.0287 0.0057 0 0.0123 0.0295 0.0879 0.0084 -30 0.1913 0.0435 0.0131 0 0 0 0.0458 0.1154 0 -35 0.2343 0.0287 0.0027 0.0012 0 0.0095 0.0787 0.0842 0 -40 0.2858 0.0093 0.014 0.0078 0.0013 0.0209 0.1049 0.0463 0.0033 -45 0.3491 0.045 0.0392 0.0045 0 0.0093 0.1185 0.0528 0.007 -50 0.3846 0.0722 0.039 0.008 0.0016 0.0166 0.1673 0.0878 0.0038 -55 0.4314 0.0669 0.0433 0.0078 0 0.0167 0.1562 0.0756 0.0045 -60 0.4593 0.061 0.0186 0 0 0.0147 0.204 0.0662 0 -65 0.5471 0 0 0 0 0 0.2394 0.0972 0 -70 0.5065 0 0 0 0 0.0485 0.2214 0 0 -75 0.5785 0 0 0 0 0 0.2097 0 0 -80 0.6998 0 0 0 0 0 0.0977 0 0 -85 0.6333 0 0 0 0 0 0.3152 0 0

Referring to Table 1 and FIG. 9, in the range where the viewing angle is ± 20 ° or less, the degree of confusion of Examples and Comparative Examples is 0.1 or less, which is insignificant and similar to each other.

However, in the range where the vertical viewing angle is ± 25 ° or more, Comparative Example 1 can confirm that the degree of mixing is continuously increased. This means that in the case of Comparative Example 1, the vertical viewing angle is very narrow.

On the other hand, in the case of the embodiments except for Example 6, the degree of confusion in most of the viewing angle can be seen that less than 0.1, it can be seen that the excellent anti-confusion performance of the embodiments.

In addition, looking at the data of the embodiments, it can be seen that as the width of the air gap is smaller, the confusion prevention performance is increased, Examples 1 to 4 having the air gap of the cut form has an air gap of the groove portion It can be confirmed that it has the mixing prevention performance superior to Examples 5-8.

10: Board Module
100: transparent substrate 110: air gap (cut form) 120: air gap (groove)
200: patterned retarder 210: first pattern 220: second pattern
300: polarizing film 400: color filter 410: pixels
411, 412, 413: Subpixel 420: Black Matrix

Claims (17)

The color filter, the transparent substrate, and the patterned retarder are sequentially arranged from the light source, and the transparent substrate has an air gap in an area corresponding to a boundary between the pattern of the patterned retarder and the pattern. Substrate module for display device.
The substrate module of claim 1, wherein the air gap is a region where the transparent substrate is cut.
The substrate module of claim 1, wherein the air gap is a region formed as a groove on one surface of the transparent substrate.
The substrate module according to claim 3, wherein the cross section of the groove portion is at least one selected from the group consisting of a rectangle, a triangle, a semi-ellipse, and a rod of which the end is triangular or semi-circular.
The substrate module of claim 3, wherein the groove is formed on a surface of the transparent substrate in a direction in which the patterned retarder is disposed or a surface opposite thereto.
The substrate module of claim 1, wherein the air gap is filled with a material having a refractive index smaller than that of the transparent substrate.
The substrate module of claim 1, wherein the transparent substrate has a thickness of 100 to 1,000 μm.
The substrate module of claim 1, wherein a black matrix region between each pixel of the color filter is disposed to correspond to an air gap portion.
The substrate module according to claim 1, wherein the width of the air gap is equal to or less than the width of the black matrix between each pixel of the color filter.
The substrate module of claim 1, wherein the transparent substrate is formed of transparent glass or transparent polymer.
The substrate module of claim 1, wherein the patterned retarder has a different optical axis from one pattern and another pattern adjacent thereto.
The substrate module of claim 1, wherein the patterned retarder has one pattern and another pattern adjacent thereto with the optical axes perpendicular to each other.
The substrate module of claim 1, further comprising a surface treatment layer on a surface of the patterned retarder.
The substrate module for an image display device according to claim 1, further comprising light scattering means on a surface from which light of the patterned retarder is emitted.
The substrate module of claim 1, wherein a polarizing film is interposed between the transparent substrate and the patterned retarder.
The substrate module of claim 15, wherein the polarizing film comprises a polarizer alone or a polarizer and a protective film.
A video display device comprising the substrate module of claim 1.

Images