KR101298608B1 - Three dimensional image display device and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a stereoscopic image display device and a manufacturing method thereof. A stereoscopic image display device according to the present invention includes a display device for displaying an image; And a stereoscopic image display panel disposed on the display device, wherein the stereoscopic image display panel includes a first substrate on which a first electrode layer and an alignment layer are sequentially formed on a first substrate material, and on a second substrate material. A second electrode layer and a refraction layer formed by repetition of the concave portion and the flat portion are sequentially formed, and a liquid crystal positioned between the second substrate attached to the first substrate and the concave portion of the first electrode layer and the refraction layer. And a blocking layer for blocking light emitted by an abnormal path in a region corresponding to the flat portion between the first substrate and the second substrate. As a result, image quality can be improved by blocking unwanted light emission.

Description

3D image display device and manufacturing method thereof {THREE DIMENSIONAL IMAGE DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF}

1 is a block diagram showing a three-dimensional display device of the lenticular lens type according to the prior art,

2 is a view for explaining a mechanism for emitting unwanted light in a conventional stereoscopic image display panel;

3 is a view for explaining the configuration of a three-dimensional image display device according to a first embodiment of the present invention;

4 is a view for explaining the configuration of a stereoscopic image display panel according to a second embodiment of the present invention;

5 is a view for explaining the configuration of a stereoscopic image display panel according to a third embodiment of the present invention;

6 is a view for explaining the configuration of a stereoscopic image display panel according to a fourth embodiment of the present invention;

7A to 7D are cross-sectional views for sequentially explaining a method of manufacturing a stereoscopic image display panel according to a first embodiment of the present invention;

8A and 8B are views for sequentially explaining a method of manufacturing a stereoscopic image display panel according to a second embodiment of the present invention;

9A to 9E are views for sequentially explaining a method of manufacturing a stereoscopic image display panel according to a third embodiment of the present invention.

Description of Reference Numerals of Major Parts of the Drawings [

10: display panel 100: stereoscopic image display panel

110: first substrate material 120: first electrode layer

130: alignment layer 140: first substrate

150: liquid crystal layer 160: second substrate material

170: second electrode layer 180: refractive layer

  190: second substrate

The present invention relates to a stereoscopic image display device and a manufacturing method thereof, and more particularly, to a stereoscopic image display device and a method for manufacturing the same that can improve the image quality by blocking the emission of unwanted light.

One of the most commonly used methods for implementing a stereoscopic display technology is a method using binocular display. The method of using binocular parallax is to express the image taken by the camera corresponding to the left eye and the image taken by the camera corresponding to the right eye on the same display module, and to make it enter the viewer's left eye and right eye, respectively. By inputting images observed from different angles to the eyes, the viewer can recognize the sense of space through the brain.

In this case, a method of dividing the image into the viewer's left eye and the right eye may be divided into a method of using a barrier and a method of using a lenticular lens, which is a kind of cylindrical lens. .

Among them, a method of using a lenticular lens includes a display module 3 in which a left eye image L and a right eye image R are respectively displayed, as shown in FIG. 1. It includes a lenticular screen (4) attached to one side. Accordingly, the lenticular lens type divides the left and right eye images L and R by changing the optical path using the lenticular lens to implement a stereoscopic image according to the principle of binocular disparity.

However, such a lenticular lens has a problem that it is difficult to turn on / off the lens function.

In order to solve this problem, a method of turning on / off the function of a lenticular lens using a liquid crystal has been proposed. That is, instead of the conventional lenticular, a stereoscopic image forming panel filled with liquid crystal is disposed on the display module.

As shown in FIG. 2, the stereoscopic image forming panel includes first and second substrates 10 and 20 that are opposed to each other, and a liquid crystal 30 filled between both substrates 10 and 20. do. The liquid crystal layer 30 is divided into a plurality of regions by the concave lens-shaped refractive layer 25 provided between the first substrate 10 and the second substrate 20. Although not specifically illustrated, electrodes are formed on both substrates 10 and 20.

Accordingly, when the voltage is blocked on the electrode, the refractive index of the liquid crystal layer 30 is greater than the refractive index of the refractive layer 25 to perform a function such as a convex lens or a lenticular lens to realize a stereoscopic image, and when voltage is applied to the electrode, the liquid crystal The refractive index of the layer 30 is equal to the refractive index of the refractive layer 25 so that the lens function is lost. Accordingly, a planar image is implemented.

Here, when the refractive layer 25 is manufactured, the area between the concave portions of the refractive layer 25 is separated from the first substrate 10, as shown in FIG. Can be made. The light incident on the flat or curved part is irradiated to the outside along an abnormal path without being controlled and not going to the desired place, as shown in FIG. The light outside the control range reduces the brightness, there is a problem in lowering the contrast ratio (image quality).

Accordingly, an object of the present invention is to provide a stereoscopic image display device which can improve image quality by blocking unwanted light emission.

Another object of the present invention is to provide a method of manufacturing a stereoscopic image display device which can improve image quality by blocking unwanted light emission.

The above object is, according to the present invention, a display device for displaying an image; And a stereoscopic image display panel disposed on the display device, wherein the stereoscopic image display panel includes a first substrate on which a first electrode layer and an alignment layer are sequentially formed on a first substrate material, and on a second substrate material. A second electrode layer and a refraction layer formed by repetition of the concave portion and the flat portion are sequentially formed, and a liquid crystal positioned between the second substrate attached to the first substrate and the concave portion of the first electrode layer and the refraction layer. And a blocking layer for blocking light irradiated by an abnormal path is formed in a region corresponding to the flat portion between the first substrate and the second substrate. do.

Here, the blocking layer may be located at a portion corresponding to the flat portion between the refractive layer and the alignment layer.

And, the blocking layer may be located between the recesses.

In addition, the blocking layer may be located between the refractive layer and the second electrode layer.

The blocking layer may be located in a region corresponding to the flat portion between the first electrode layer and the alignment layer.

The width of the blocking layer may be substantially the same as the width of the flat portion.

In addition, the width of the blocking layer may be larger than the width of the flat portion.

The display device may be one of a liquid crystal display (LCD), an organic light emitting diode (OLED), a plasma display panel (PDP), a field emission display (FED), and a vacuum fluorescent display (VFD).

SUMMARY OF THE INVENTION An object of the present invention is a display device for displaying an image according to the present invention; And a stereoscopic image display panel disposed on the display device, wherein the display device includes a thin film transistor substrate having a thin film transistor, and a color filter substrate having a color filter layer formed on an insulating substrate. The display panel includes a refractive layer formed by repetition of the concave portion and the flat portion, and the color filter substrate includes a blocking layer positioned in a region corresponding to the flat portion. .

Here, the refractive layer may be made of liquid crystal.

The blocking layer may be located between the insulating substrate and the color filter layer.

In addition, the blocking layer may be positioned between the stereoscopic image display panel and the insulating substrate.

The blocking layer may be located on the color filter layer.

Another object of the present invention, according to the present invention, the step of preparing a first substrate on which the first electrode layer and the alignment layer is formed on the first substrate material; A second electrode layer, a concave portion and a flat portion are sequentially formed on the second substrate material, and a refractive layer formed by repeating each other is formed sequentially, and a second substrate is prepared by forming a blocking layer that blocks light emitted by an abnormal path on the flat portion. Making; Aligning and opposing the first substrate and the second substrate to face each other; And injecting a liquid crystal between the alignment layer and the concave portion of the refraction layer.

The forming of the blocking material may include applying a blocking material to the entire surface of the refractive layer; Arranging a mask including a transmission part and a light blocking part on the blocking material; Exposing the blocking material using the mask; And developing the exposed blocking material to leave the blocking material only on the flat part.

The blocking material may include a positive photosensitive material from which the exposed portion is removed, and the mask may be aligned so that the light blocking portion corresponds to the flat portion and the transmission portion corresponds to the concave portion.

In addition, the blocking material may include a negative photosensitive material from which an unexposed portion is removed, and the mask may be aligned so that the light blocking portion corresponds to the recess and the transmission portion corresponds to the flat portion.

Another object of the present invention, according to the present invention, the step of preparing a first substrate on which the first electrode layer and the alignment layer is formed on the first substrate material; Preparing a second substrate by sequentially forming a second electrode layer and a plurality of blocking layers disposed to be spaced apart from each other on a second substrate material, and forming a refractive layer formed by repetition of a recess and a flat portion on the blocking layer. ; Aligning and opposing the first substrate and the second substrate to face each other; And injecting a liquid crystal between the alignment layer and the concave portion of the refraction layer.

Here, the refractive layer may be formed such that the flat portion corresponds to the blocking layer and the concave portion corresponds to the region between the blocking layers.

And, the blocking layer can be made larger than the width of the flat portion.

Another object of the present invention is to form a first electrode layer on a first substrate material, to form a plurality of blocking layers arranged on the first electrode layer spaced apart from each other, according to the present invention, an alignment layer on the blocking layer Forming a first substrate; Preparing a second substrate having a second electrode layer, a refraction layer formed by repeating the concave portion and the flat portion mutually on the second substrate material; Aligning and opposing the first substrate and the second substrate to face each other; And injecting a liquid crystal between the alignment layer and the concave portion of the refraction layer.

The forming of the blocking layer may include applying a blocking material on the entire surface of the first electrode layer; Arranging a mask including a transmission part and a light blocking part on the blocking material; Exposing the blocking material using the mask; And developing the exposed blocking material to form a plurality of blocking layers spaced apart from each other on the first electrode layer.

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

Prior to the description, the flat portion defined in the present invention is defined in terms including a case where the flat portion is formed to be somewhat spherical as well as the case where the flat portion is substantially flat.

As shown in FIG. 3, the stereoscopic image display apparatus according to the present invention includes a display apparatus 10 for displaying an image and a stereoscopic image display panel 100 disposed on the display apparatus 10.

The display device 10 according to the present invention is the same as a conventional liquid crystal display (LIQUID CRYSTAL DISPLAY). Specifically, as shown in FIG. 3, the display device 10 includes a display panel 50 and a light source 60 positioned behind the display panel 50. The display panel 50 includes a thin film transistor substrate 20 on which a thin film transistor (TFT) is formed, a color filter substrate 30 on which a color filter layer is formed, which is attached to the thin film transistor substrate 20, and is formed to face each other. And a liquid crystal layer 40 positioned between 20 and 30. Such a liquid crystal display is a device for displaying a desired image by adjusting the light transmittance of liquid crystal cells arranged in a matrix form according to image signal information, and using light emitted from the light source 60. An image is formed on the display panel 50.

In the first embodiment of the present invention, a liquid crystal display is used as an apparatus for displaying a two-dimensional image as an example. However, the present invention is not limited thereto, and an organic light emitting diode (OLED), a plasma display panel (PDP), a field emission display (FED), a vacuum fluorescent display (VFD), and the like may also be applied.

The stereoscopic image display panel 100 is attached to the outer surface of the display device 10. Specifically, the stereoscopic image display panel 100 is positioned on the opposite side where the light source 60 is located.

As shown in FIG. 3, the stereoscopic image display panel 100 according to the present invention includes a first substrate 140 and a second substrate 190 which are opposite to each other, and between the substrates 140 and 190. The liquid crystal layer 150 is interposed.

First, the first substrate 140 will be described.

In the first substrate 140, the first electrode layer 120 and the alignment layer 130 are sequentially formed on the first substrate material 110.

The first substrate material 110 may be made of an insulating material such as glass, quartz, ceramic, or plastic.

The first electrode layer 120 is formed on the entire surface of the first substrate material 110. The first electrode layer 120 is made of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO). The first electrode layer 120 forms a vertical electric field together with the second electrode layer 170 to be described later to arrange liquid crystal molecules constituting the liquid crystal layer 150 in the vertical direction.

An alignment layer 130 is formed on the first electrode layer 120. The alignment layer 130 helps liquid crystal molecules constituting the liquid crystal layer 150 to be easily arranged according to an electric field.

Next, the second substrate 190 will be described.

In the second substrate 190, the second electrode layer 170 and the refractive layer 180 are sequentially formed on the second substrate material 160.

The second substrate material 160 is formed of the same or similar material as the first substrate material 160 described above.

The second electrode layer 170 is formed on the entire surface of the second substrate material 160. The second electrode layer 170 is made of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO) like the first electrode layer 120 described above.

A refractive layer 180 having a concave lens shape is formed on the second electrode layer 170. Here, the refractive layer 180 may be made of a polymer organic material. The organic material constituting the refractive layer 180 may be cured by UV. In detail, the refractive layer 180 may include, for example, polyethylene glycol, an acrylate, and an initiator. Refractive layer 180 according to the present invention consists of a recessed portion (180a) and a flat portion (180b). Specifically, the recessed part 180a and the flat part 180b are mutually repeated. The flat part 180b is close to the first substrate 140 when the two substrates 140 and 190 are adhered to each other, and the liquid crystal layer 150 is positioned inside the concave part 180a.

A blocking layer 200 is formed at a portion corresponding to the flat portion 180b between the refractive layer 180 and the first substrate 140. Specifically, the blocking layer 200 according to the present invention is positioned between the flat portion 180b and the alignment layer 130. That is, the blocking layer 200 is positioned between the recesses 180a. The blocking layer 200 is a layer made of a material that blocks or absorbs light, and may be made of a black matrix such as chromium. The width d1 of the blocking layer 200 positioned on the flat portion 180b may be substantially the same as the width d2 of the flat portion 180b. This is to increase the contrast ratio and improve the image quality by blocking the light incident to the flat part 180b to the maximum.

As in the present invention, by providing the blocking layer 200, it is possible to fundamentally block the light irradiated in an abnormal path. Accordingly, the contrast ratio is increased and the image quality is improved.

Hereinafter, a second embodiment of the present invention will be described with reference to FIG. In the following description, only characteristic parts distinguished from the first embodiment will be described and described, and descriptions omitted or summarized will follow the first embodiment or known technology. For the sake of convenience of description, the same reference numerals are given to the same constituent elements.

In the stereoscopic image display panel 100 according to the second embodiment, a blocking layer 200 is provided between the refractive layer 180 and the second electrode layer 170. More specifically, the blocking layer 200 according to the second embodiment is provided at a position overlapping with the flat portion 180b corresponding to the flat portion 180b. In particular, the blocking layer 200 is provided to have a larger width than the blocking layer of the first embodiment. Specifically, the width d3 of the blocking layer 200 according to the second embodiment is larger than the width d2 of the flat portion 180b.

The reason why the width d3 of the blocking layer 200 is larger than the width d2 of the flat part 180b is as follows. If the blocking layer 200 provided between the refractive layer 180 and the second electrode layer 170 is the same as the width d2 of the flat portion 180b, the light incident on the flat portion 180b is refracted layer 180. Passing through the outside of the region where the blocking layer 200 is formed may be irradiated. In order to completely block such a case, the width d3 of the blocking layer 200 is provided to be larger than the width d2 of the flat portion 180b.

Hereinafter, a third embodiment of the present invention will be described with reference to FIG. In the following description, only characteristic parts distinguished from the first embodiment will be described and described, and descriptions omitted or summarized will follow the first embodiment or known technology. For the sake of convenience of description, the same reference numerals are given to the same constituent elements.

The blocking layer 200 according to the third embodiment is provided in a region corresponding to the flat portion 180b between the first electrode layer 120 and the alignment layer 130. The width d4 of the blocking layer 200 is provided to be substantially the same as the width d2 of the flat portion 180b.

Hereinafter, a fourth embodiment of the present invention will be described with reference to FIG.

The display panel 50 according to the fourth exemplary embodiment of the present invention may be a liquid crystal panel, and the liquid crystal panel may face the thin film transistor substrate 20 on which the thin film transistor TFT is formed and the thin film transistor substrate 20. It includes a color filter substrate 30 is attached and the color filter layer 32 is formed on the insulating substrate 31 and the liquid crystal layer 40 positioned between both substrates (20, 30). The liquid crystal panel is a device for displaying a desired image by adjusting the light transmittance of liquid crystal cells arranged in a matrix form according to image signal information, and using light emitted from the light source 60. An image is formed on the display panel 50.

Meanwhile, although not specifically illustrated, the blocking layer 200 according to the fourth embodiment may be simultaneously formed in a process of forming a black matrix that distinguishes between red, green, and blue color filters.

The display panel 50 according to the present invention includes a blocking layer 200. Specifically, as shown in FIG. 6, the insulating substrate 31 is provided in a region corresponding to the above-described flat portion 180b between the insulating substrate 31 and the color filter layer 32. In another embodiment, although not illustrated, the blocking layer 200 is provided in an area corresponding to the flat portion 180b described above between the 3D image forming panel 100 and the first insulating substrate 31. In another embodiment, the blocking layer 200 may be provided on the color filter layer 32 in a region corresponding to the flat portion 180b.

Here, the stereoscopic image display panel 100 has the same structure as the above-described embodiment, as shown in FIG. However, the present invention is not limited thereto, and the stereoscopic image display panel may be a simply manufactured liquid crystal panel. In this case, the liquid crystal panel may perform the same function as the refractive layer. Hereinafter, a method of manufacturing a stereoscopic image display panel according to a first embodiment of the present invention will be described with reference to FIGS. 7A to 7D.

First, the first substrate 140 having the first electrode layer 120 and the alignment layer 130 formed on the first substrate material 110 is prepared according to a conventional method.

At the same time as or separately from the preparation of the first substrate 140, a second substrate 190 according to the first embodiment of the present invention is prepared.

A method of manufacturing the second substrate 190 is specifically as follows.

First, as shown in FIG. 7A, the second electrode layer 170 and the refractive layer 180 are formed on the second substrate material 160. The refractive layer 180 is composed of a concave portion 180a and a convex portion 180b. The method of forming the refractive layer 180 having such a shape is as follows. First, the polymer organic material is coated on the second electrode layer 170, and then UV is applied to the polymer organic material in a state in which a concave lens shape is formed on the polymer organic material by using a mold or the like. By irradiating and curing, the refractive layer 180 as shown in FIG. 7A is formed. This is only one exemplary method, and the refractive layer 180 may be manufactured by other methods such as exposure and development through diffraction exposure.

Subsequently, as shown in FIG. 7B, a blocking material is coated on the refractive layer 180 to form the blocking layer 200. The blocking layer 200 may be an organic polymer material including a material that blocks or absorbs light such as chromium. The blocking material may include a positive photosensitive material from which an exposed part is removed or a negative photosensitive material from which an unexposed part is removed. In addition, the mask 300 including the transmission part 310 and the light blocking part 320 is disposed on the blocking layer 200. Here, as shown in FIG. 7B, when the blocking layer 200 is positive, the mask 300 has the light blocking portion 320 corresponding to the flat portion 180b and the transmission portion 310 corresponding to the concave portion 180a. Are arranged to be aligned. Although not shown, when the blocking layer 200 is negative, the mask 300 is arranged so that the light blocking part 320 corresponds to the recess 180b and the transmission part 310 corresponds to the flat part.

Next, as shown in FIG. 7C, the exposed portion is removed during development to form a blocking layer 200 that blocks light on the flat part 180b. That is, the blocking layer 200 remains only on the flat part 180b, and the blocking layer 200 is removed in other areas. Here, the width d1 of the blocking layer 200 positioned on the flat part 180b by adjusting the size of the light blocking part 320 is formed to be substantially the same as the width d2 of the flat part 180b. desirable. This is the same as the reason mentioned above.

Thereafter, as illustrated in FIG. 7D, the prepared first substrate 140 and the second substrate 190 are aligned to face each other.

Although not shown, a liquid crystal layer 150 is formed by injecting liquid crystal between the first electrode layer 120 and the refractive layer 180, more specifically, between the alignment layer 130 and the refractive layer 180 to form a stereoscopic image. Complete the display panel.

Hereinafter, a method of manufacturing a stereoscopic image display panel according to a second embodiment of the present invention will be described with reference to FIGS. 8A and 8B. In the following description, only the characteristic parts distinguished from the manufacturing method according to the first embodiment will be described and described, and the descriptions omitted or summarized according to the manufacturing method or known technology according to the first embodiment. For the sake of convenience of description, the same reference numerals are given to the same constituent elements.

First, as shown in FIG. 8A, a second electrode layer 170 is formed on the second substrate material 160, and a plurality of blocking layers 200 spaced apart from each other are formed on the second electrode layer. The method of forming the blocking layer 200 as shown in FIG. 8A is the same as the manufacturing method of the first embodiment.

Subsequently, as shown in FIG. 8B, a refractive layer including a concave portion 180a and a flat portion 180b is formed on the blocking layer 200. Here, the refractive layer 180 is formed such that the flat portion 180b corresponds to the blocking layer 200 and the concave portion 180a corresponds to a region between the blocking layers 200. In addition, the width d3 of the blocking layer 200 may be made larger than the width d2 of the flat portion 180b. The reason why the width d3 of the blocking layer 200 is larger than the width d2 of the flat portion 180b is as described in the second embodiment.

Subsequently, as in the manufacturing method of the first embodiment, the separately prepared first substrate 140 and the second substrate 190 are aligned to face each other, and then a liquid crystal is disposed between the alignment layer 130 and the refractive layer 180. The liquid crystal layer 150 is formed by injection to complete a stereoscopic image display panel.

Hereinafter, a method of manufacturing a stereoscopic image display panel according to a third embodiment of the present invention will be described with reference to FIGS. 9A and 9E. In the following description, only the characteristic parts distinguished from the manufacturing method according to the first embodiment will be described and described, and the descriptions omitted or summarized according to the manufacturing method or known technology according to the first embodiment. For the sake of convenience of description, the same reference numerals are given to the same constituent elements.

First, as shown in FIG. 9A, the first electrode layer 120 is formed on the first substrate material 110, and the blocking layer 200 is formed by applying a blocking material on the first electrode layer 120. do.

Subsequently, as shown in FIG. 9B, the mask 300 including the transmission part 310 and the light blocking part 320 is aligned and disposed on the blocking layer 200, and the blocking layer 200 is formed using the mask 30. ) Is exposed.

Thereafter, the blocking layer 200 is developed to form a plurality of blocking layers 200 spaced apart from each other as shown in FIG. 9C.

Next, as illustrated in FIG. 9D, the alignment layer 130 is formed on the blocking layer 200 to complete the first substrate 140.

In addition, a second substrate 190 prepared at the same time as the first substrate 140 or in a separate process is prepared. The second substrate 190 is formed on the second substrate material 160 is a refractive layer 180 consisting of a recessed portion 180a and a flat portion 180b.

When the first substrate 140 and the second substrate 190 are completed, as shown in FIG. 9E, the first substrate 140 and the second substrate 190 are aligned to face each other.

Although not shown, according to a known method, a liquid crystal is injected between the first electrode layer 120 and the refractive layer 180 and more specifically, between the alignment layer 130 and the refractive layer 180 to inject the liquid crystal layer 150. ) To complete the stereoscopic image display panel.

In the three-dimensional image display panel manufactured as described above, the blocking layer 200 is provided, so that light emitted by an abnormal path may be blocked at source. Accordingly, the contrast ratio is increased and the image quality is improved.

As described above, according to the present invention, there is provided a stereoscopic image display device which can improve image quality by blocking unwanted light emission.

In addition, a method of manufacturing a stereoscopic image display device which can improve image quality by blocking unwanted light emission is provided.

Claims (22)

A display device for displaying an image; And A stereoscopic image display panel disposed on the display device; The three-dimensional image display panel includes a first substrate on which a first electrode layer and an alignment layer are sequentially formed on a first substrate material, and a refraction layer formed by repetition of a second electrode layer, a recess, and a flat portion on a second substrate material. It is formed in order, and includes a second substrate attached to face the first substrate and the liquid crystal layer positioned between the recessed portion of the first electrode layer and the refractive layer, And a blocking layer for blocking light irradiated by an abnormal path is formed in a region corresponding to the flat portion between the first substrate and the second substrate. The method of claim 1, And the blocking layer is positioned at a portion corresponding to the flat portion between the refractive layer and the alignment layer. The method of claim 1, And the flat part is positioned close to the first substrate when the second substrate is attached to the first substrate. The method of claim 1, The blocking layer is positioned between the refractive layer and the second electrode layer. The method of claim 1, And the blocking layer is disposed in a region corresponding to the flat portion between the first electrode layer and the alignment layer. 3. The method of claim 2, And the width of the blocking layer is equal to the width of the flat portion. 5. The method of claim 4, The width of the blocking layer is greater than the width of the flat portion 3D image display device. The method of claim 1, The display device may be any one of a liquid crystal display (LCD), an organic light emitting display (OLED), a plasma display panel (PDP), a field emission display (FED), and a vacuum fluorescent display (VFD). Video display device. A display device for displaying an image; And A stereoscopic image display panel disposed on the display device; The display device includes a thin film transistor substrate having a thin film transistor, and a color filter substrate having a color filter layer formed on an insulating substrate. The stereoscopic image display panel includes a refractive layer formed by repetition of the concave portion and the flat portion, And the color filter substrate includes a blocking layer positioned in an area corresponding to the flat portion. 10. The method of claim 9, And the refractive layer is made of liquid crystal. The method of claim 10, And the blocking layer is positioned between the insulating substrate and the color filter layer. The method of claim 10, And the blocking layer is positioned between the stereoscopic image display panel and the insulating substrate. The method of claim 10, And the blocking layer is on the color filter layer. Preparing a first substrate on which a first electrode layer and an alignment layer are sequentially formed on a first substrate material; A second electrode layer, a concave portion and a flat portion are sequentially formed on the second substrate material, and a refractive layer formed by repeating each other is formed sequentially, and a second substrate is prepared by forming a blocking layer that blocks light emitted by an abnormal path on the flat portion. Making; Aligning and opposing the first substrate and the second substrate to face each other; And And injecting a liquid crystal between the alignment layer and the concave portion of the refraction layer. The method of claim 14, Forming the blocking layer, Applying a blocking material to the entire surface of the refractive layer; Arranging a mask including a transmission part and a light blocking part on the blocking material; Exposing the blocking material using the mask; And Developing the exposed blocking material to leave the blocking material only on the flat portion. 16. The method of claim 15, The blocking material includes a positive photosensitive material from which the exposed portion is removed, And the mask is arranged so that the light blocking portion corresponds to the flat portion and the transmission portion corresponds to the concave portion. 16. The method of claim 15, The blocking material includes a negative photosensitive material from which an unexposed part is removed, And the mask is arranged such that the light blocking portion corresponds to the recess portion and the transmission portion corresponds to the flat portion. Preparing a first substrate on which a first electrode layer and an alignment layer are sequentially formed on a first substrate material; Preparing a second substrate by sequentially forming a second electrode layer and a plurality of blocking layers disposed to be spaced apart from each other on a second substrate material, and forming a refractive layer formed by repetition of a recess and a flat portion on the blocking layer. ; Aligning and opposing the first substrate and the second substrate to face each other; And And injecting a liquid crystal between the alignment layer and the concave portion of the refraction layer. 19. The method of claim 18, And wherein the refractive layer is formed such that the flat portion corresponds to the blocking layer and the concave portion corresponds to a region between the blocking layers. 19. The method of claim 18, And wherein the blocking layer is made larger than the width of the flat portion. Preparing a first substrate by forming a first electrode layer on a first substrate material, forming a plurality of blocking layers spaced apart from each other on the first electrode layer, and forming an alignment layer on the blocking layer; Preparing a second substrate having a second electrode layer, a refraction layer formed by repeating the concave portion and the flat portion mutually on the second substrate material; Aligning and opposing the first substrate and the second substrate to face each other; And And injecting a liquid crystal between the alignment layer and the concave portion of the refraction layer. 22. The method of claim 21, Forming the blocking layer, Applying a blocking material to the entire surface of the first electrode layer; Arranging a mask including a transmission part and a light blocking part on the blocking material; Exposing the blocking material using the mask; And And developing the exposed blocking material to form a plurality of blocking layers on the first electrode layer so as to be spaced apart from each other.

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