KR102307203B1 - Three dimension display device - Google Patents

Abstract

N개로 이루어지는 광분리소자층을 포함할 수 있다.
실시예는 1개의 서브 화소에 동일한 뷰가 반복되도록 설계함으로써, 휘도를 더욱 향상시킬 수 있다. The stereoscopic image display device according to the embodiment includes a display panel for displaying an N-view format stereoscopic image, a lens layer disposed on the display panel to separate left and right images, and the and a matrix-shaped block disposed on one side of the lens layer to selectively pass the light, and the block corresponding to the one sub-pixel is m

It may include N optical separation device layers.
In the embodiment, the luminance may be further improved by designing the same view to be repeated in one sub-pixel.

Description

Stereoscopic image display device {THREE DIMENSION DISPLAY DEVICE}

The embodiment relates to a stereoscopic image display device for improving luminance and resolution.

A stereoscopic image display device displays an image three-dimensionally by using a sense of perspective when different image signals perceived by both eyes are synthesized. The stereoscopic image display apparatus may be largely divided into a binocular disparity method, a volumetric method, and a holographic method.

The binocular disparity method can be divided into a spectacles type and a non-glasses type, and recently, the non-glasses type has been actively studied. The glasses-free type includes a Parallax Barrier method and a Lentkcular Lens method.

In the parallax barrier method, thin vertical slits are arranged at regular intervals to transmit or block light, and when viewed through the slit at a specific point of view, the left and right images are accurately separated to realize a 3D image. The parallax barrier method has problems such as a decrease in brightness due to the barrier, difficulty in manufacturing, and diffraction.

In the lenticular lens method, a lenticular lens is attached to a liquid crystal display panel so that the left eye and the right eye see different pixels through the lens, so that the left and right images are separated to provide a stereoscopic image.

Conventionally, the barrier layer is formed by dividing the sub-pixels into N, and the view design is performed in the vertical direction based on one sub-pixel, so as the number of views increases, the resolution and luminance in the vertical direction decrease. occurs

In order to solve the above problems, an object of the embodiment is to provide a stereoscopic image display device for improving resolution and luminance.

N개로 이루어지는 광분리소자층을 포함할 수 있다.In order to achieve the above object, a stereoscopic image display device according to an embodiment includes a display panel for displaying an N-view format stereoscopic image, a lens layer disposed on the display panel to separate left and right images, and the lens; and a matrix-shaped block disposed on one side of the layer to selectively pass the light, and the block corresponding to the one sub-pixel is m

It may include N optical separation device layers.

In the embodiment, the luminance may be further improved by designing the same view to be repeated in one sub-pixel.

In addition, the embodiment can improve the resolution in the vertical direction by designing the same view to be repeated in one sub-pixel.

In addition, the embodiment has an effect of increasing the OVD compared to the same rear distance condition by designing the block of the optical separation device layer to increase compared to the prior art for a structure displaying the same view.

In addition, the embodiment has an effect of reducing the overall thickness of the display device by forming the optical separation device layer in the form of a film or a pattern.

1 is a cross-sectional view illustrating a stereoscopic image display device provided with an optical separation device layer according to a first embodiment.
2 and 3 are views showing the block structure of the optical separation device layer according to the first embodiment.
4 is a table showing the luminance and resolution of the stereoscopic image display device according to the first embodiment.
5 and 6 are cross-sectional views illustrating modified examples of a stereoscopic image display device provided with an optical separation element layer according to an embodiment.
7 is a cross-sectional view illustrating a stereoscopic image display device provided with an optical separation device layer according to a second embodiment.
8 is a graph showing the difference in luminance according to the material of the optical separation device layer according to the second embodiment.
9 is a cross-sectional view illustrating a stereoscopic image display device provided with an optical separation element layer according to a third embodiment.

Hereinafter, the embodiment will be described in detail with reference to the drawings.

1 is a cross-sectional view showing a stereoscopic image display device provided with an optical separation device layer according to an embodiment, and FIG. 2 is a diagram showing a block structure of the optical separation device layer according to the first embodiment.

1 and 2 , the stereoscopic image display device according to the embodiment includes a display panel 100 that displays a stereoscopic image in an N-view format (N is a natural number), and is disposed on the display panel 100 to provide It may include a lens layer 200 for separating left and right images, and an optical separation device layer 300 including blocks disposed under the lens layer 200 and arranged in a matrix form. Here, the first adhesive layer PSA1 is disposed between the display panel 100 and the optical separation device layer 300 , and the second adhesive layer PSA2 is disposed between the optical separation device layer 300 and the lens layer 200 . can be

The display panel 100 may be implemented as a transmissive display device and, for example, may be implemented as a liquid crystal display device. The display panel 100 may include a first substrate 110 and a second substrate 120 . A liquid crystal layer (not shown) may be disposed between the first substrate 110 and the second substrate 120 . The first substrate 110 and the second substrate 120 may be glass substrates, or, alternatively, plastic substrates.

The first substrate 110 may be a thin film transistor (TFT) substrate. A thin film transistor array (not shown) may be formed on the first substrate 110 . The TFT array includes a plurality of data lines to which R, G, and B data voltages are supplied, a plurality of gate lines (or scan lines) to which a gate pulse (or scan pulse) is supplied by crossing the data lines, and data lines. and a plurality of TFTs formed at intersections of the gate lines, a plurality of pixel electrodes for charging the data voltage to the liquid crystal cells, and a storage capacitor connected to the pixel electrode to maintain the voltage of the liquid crystal cell. have.

The second substrate 120 may be a color filter (CF) substrate. A color filter array 150 may be formed on the second substrate 120 . The color filter array 150 includes a black matrix, a color filter, and the like. The common electrode is formed on the upper glass substrate in vertical electric field driving methods such as TN (Twisted Nematic) mode and VA (Vertical Alignment) mode, and horizontal electric field driving such as IPS (In Plane Switching) mode and FFS (Fringe Field Switching) mode In this way, it is formed on the second substrate 120 together with the pixel electrode.

Polarizing plates 130 and 140 are attached to the first substrate 110 and the second substrate 120 , and an alignment layer for setting a pretilt angle of the liquid crystal may be formed on an inner surface in contact with the liquid crystal layer.

The display panel 100 may include a first driving unit (not shown). The first driver includes a data driving circuit for supplying RGB data voltages to the data lines of the display panel 100 and a gate driving circuit for sequentially supplying gate pulses to the gate lines of the display panel 100 . The data driving circuit of the first driver converts RGB digital video data from the controller into analog gamma voltages to generate RGB data voltages and supplies the RGB data voltages to data lines of the display panel 100 under the control of the controller.

Although not shown, a backlight unit providing light may be further disposed under the display panel. The backlight unit serves to provide light to the display panel.

Although the liquid crystal display panel has been described as an exemplary embodiment of the display panel, the present invention is not limited thereto, and the display panel may be an organic light emitting display panel.

The lens layer 200 may include a plurality of switchable areas (SA). The switchable area SA is defined to have a width corresponding to one pitch of a pixel or sub-pixel, and may have a shape in which the switchable area SA having the same pitch is periodically repeated in one direction. The lens layer 200 may be formed to have substantially the same pitch as that of one pixel or one sub-pixel of the optical separation device layer 300 . The lens layer 200 serves to separate the left and right images.

The light separation device layer 300 may be electrically controlled to transmit light from the backlight unit (not shown) as it is in the 2D image mode. In addition, the optical separation element layer 300 is electrically controlled to partially block the light from the backlight unit in the 3D image mode, and spatially transmit the light passing through the lens layer 200 and proceeding to the left and right eyes of the observer. separate To this end, the optical separation device layer 300 may be implemented as a transmissive display device. As an example, it may be implemented as a liquid crystal display device without a color filter array. The optical separation device layer 300 includes a lower glass substrate 310 on which a TFT array is formed and an upper glass substrate 320 without a color filter array, and is disposed between the lower glass substrate 310 and the upper glass substrate 320 . A liquid crystal layer 330 may be disposed.

Although it has been described above that the optical separation device layer 300 is formed in the form of a panel, the present invention is not limited thereto, and may be implemented in the form of a film.

The lens layer 200 and the light separation element layer 300 uniformly irradiate light to the display panel 100 in the 2D mode, while horizontally split the light passing through the lens layer 200 in the 3D mode. . RGB data voltages arranged in a 2D data format are supplied to the display panel 100 in 2D mode, and RGB data voltages arranged in 3D image data are supplied to the 3D mode. The display panel 100 and the optical separation device layer 300 may be driven at a predetermined frame rate to be synchronized with each other. A voltage source V for applying a voltage to the upper glass substrate 320 and the lower glass substrate 310 may be connected to the optical separation device layer 300 .

A second driver (not shown) may be connected to the optical separation device layer 300 . The second driver sequentially supplies a data driving circuit for supplying a white gradation voltage and a black gradation voltage to the data lines of the optical separation device layer 300 and a gate pulse to the gate lines of the optical separation device layer 300 . a gate driving circuit for The data driving circuit of the second driver converts digital white data input from the controller into a gamma voltage of the peak white gray in the 2D mode to generate white gray voltages, and converts the white voltages to the optical separation device layer 300 under the control of the controller. of data lines. In addition, the data driving circuit of the second driver converts digital white data and digital black data input from the controller in the 3D mode into gamma voltages of peak white grayscale and peak black grayscale voltages to generate white grayscale voltages and black grayscale voltages. and supply the white gradation voltages and black gradation voltages to the data lines of the optical separation device layer 300 under the control of the controller.

The controller controls the first and second drivers in the 2D mode or the 3D mode in response to a user's 2D/3D mode selection signal input through the user interface or a 2D/3D identification code extracted from an input image signal.

As shown in FIG. 2 , when the display panel 100 displays a stereoscopic image in an N-view format, a block corresponding to one sub-pixel of the optical separation device layer 300 may include m×N blocks. (N is a natural number, m is a natural number greater than or equal to 2) Here, one sub-pixel may correspond to blocks arranged horizontally.

The optical separation device layer 300 may be formed of a plurality of sub-pixels. The optical separation device layer 300 may be designed such that a view is formed in a vertical direction. When the optical separation device layer 300 displays a stereoscopic image in an 8-view format, the blocks of the optical separation device layer 300 may include a total 16×16 structure. Blocks corresponding to one sub-pixel may include 16 blocks, and the same view may be repeated twice.

When the first view is displayed in the sub-pixel disposed at the uppermost level, the second to the eighth views may be sequentially and repeatedly displayed in the sub-pixels disposed below the vertical image. When the first view is displayed, the white gradation voltage is charged in the uppermost sub-pixel, and the black gradation voltage is charged in the other sub-pixels. In this case, in the sub-pixel disposed at the top, the first view is displayed in the ninth block so that the first view can be displayed twice.

If the same view is repeated twice in one sub-pixel, luminance may be improved compared to the related art. Also, while the view is performed in the vertical direction, the resolution in the vertical direction may be improved. In addition, since the block of the optical separation device layer 300 is designed to increase compared to the prior art, there is an effect that the OVD can be increased compared to the same rear distance condition.

3 is a view showing a block structure of an optical separation device layer according to the first embodiment.

As shown in FIG. 3 , when the display panel 100 displays a stereoscopic image in an N-view format, one sub-pixel of the optical separation device layer 300 may include m×N blocks. ( N is a natural number, m is a natural number equal to or greater than 2) Here, one sub-pixel may include blocks arranged horizontally.

The optical separation device layer 300 may be formed of a plurality of sub-pixels. The optical separation device layer 300 may be designed such that a view is formed in a vertical direction. When the optical separation device layer 300 displays a stereoscopic image in a 4-view format, the blocks of the optical separation device layer 300 may include a total 16×16 structure. Blocks corresponding to one sub-pixel may include 16, and the same view may be repeated 4 times.

When the first view is displayed in the sub-pixel disposed at the uppermost level, the second to the eighth views may be sequentially and repeatedly displayed in the sub-pixels disposed below the vertical image. When the first view is displayed, the white gradation voltage is charged in the uppermost sub-pixel, and the black gradation voltage is charged in the other sub-pixels. In this case, in the sub-pixel disposed at the uppermost level, the first view is displayed in the fifth block, the ninth block, and the thirteenth block, so that the first view can be displayed four times.

When the same view is repeated 4 times in one sub-pixel, luminance may be improved compared to the related art. Also, while the view is performed in the vertical direction, the resolution in the vertical direction may be improved. In addition, since the block of the optical separation device layer 300 is designed to increase compared to the prior art, there is an effect that the OVD can be increased compared to the same rear distance condition.

4 is a table showing the luminance and resolution of the stereoscopic image display device according to the embodiment.

As shown in FIG. 4 , when comparing the prior art having the same view and the same number of blocks and the embodiments comprising N views and mN blocks, the stereoscopic image display device according to the embodiment displays a conventional stereoscopic image having the same number of blocks. It can be seen that the 3D pedestal is improved by 2 times and 4 times compared to the device. Also, when looking at the amount of change in luminance, it can be seen that the stereoscopic image display device according to the embodiment is improved by 2 times or 4 times compared to the related art. In particular, if it consists of 16 blocks for 4 views, it can be seen that the effect is the most outstanding.

5 is a cross-sectional view illustrating another stereoscopic image display device provided with an optical separation device layer according to an embodiment.

Referring to FIG. 5 , a stereoscopic image display device according to another exemplary embodiment includes a display panel 100 for displaying an N-view format stereoscopic image, and a lens disposed on the display panel 100 to separate left and right images. The layer 200 and the lens layer 200 may include a matrix-shaped block, and one sub-pixel may include an optical separation device layer 300 including m×N blocks. . Here, since it is the same as the stereoscopic image display device of FIG. 1 except for the arrangement structure of the display panel 100 and the optical separation device layer 300, it is omitted.

The display panel 100 may be implemented as a transmissive display device and, for example, may be implemented as a liquid crystal display device. The display panel 100 may include a first substrate 110 and a second substrate 120 . A liquid crystal layer (not shown) may be disposed between the first substrate 110 and the second substrate 120 .

The lens layer 200 may include a plurality of switchable areas. The switchable region is defined to have a width corresponding to one pitch (P), and the switchable region having the same pitch (P) may have a shape in which it is periodically repeated in one direction. The lens layer 200 may be formed to have substantially the same pitch as one sub-pixel of the optical separation device layer 300 . The lens layer 200 serves to separate the left and right images.

The light separation device layer 300 may be electrically controlled to transmit light from the backlight unit (not shown) as it is in the 2D image mode. In addition, the optical separation device layer 300 is electrically controlled to partially block the light from the backlight unit in the 3D image mode, and spatially separate the propagation paths of the light passing through the lens layer to the left eye and the right eye of the observer. To this end, the optical separation device layer 300 may be implemented as a transmissive display device. As an example, it may be implemented as a liquid crystal display device without a color filter array. The optical separation device layer 300 includes a lower substrate 310 on which a TFT array is formed and an upper substrate 320 without a color filter array, and a liquid crystal layer 330 is disposed between the lower substrate 310 and the upper substrate 320 . ) can be placed.

6 is a cross-sectional view illustrating a modified example of a stereoscopic image display device provided with an optical separation element layer according to an embodiment.

Referring to FIG. 6 , a stereoscopic image display device according to another exemplary embodiment includes a display panel 100 for displaying an N-view format stereoscopic image, and a lens disposed on the display panel 100 to separate left and right images. The layer 200 and the lens layer 200 may include a matrix block, and one sub-pixel may include the optical separation device layer 300 including m×N blocks. Here, except for the arrangement structure of the display panel 100 , the lens layer 200 , and the optical separation element layer 300 , the structure is the same as that of FIG. 1 , and thus is omitted.

The display panel 100 may be implemented as a transmissive display device and, for example, may be implemented as a liquid crystal display device. The display panel 100 may include a first substrate 110 and a second substrate 120 . A liquid crystal layer (not shown) may be disposed between the first substrate 110 and the second substrate 120 .

The lens layer 200 may include a plurality of switchable areas. The switchable region is defined to have a width corresponding to one pitch (P), and the switchable region having the same pitch (P) may have a shape in which it is periodically repeated in one direction. The lens layer 200 may be formed to have substantially the same pitch as one sub-pixel of the optical separation device layer 300 . The lens layer 200 serves to separate the left and right images.

The light separation device layer 300 may be electrically controlled to transmit light from the backlight unit (not shown) as it is in the 2D image mode. In addition, the optical separation device layer 300 is electrically controlled to partially block the light from the backlight unit in the 3D image mode, and spatially separate the propagation paths of the light passing through the lens layer to the left eye and the right eye of the observer. To this end, the optical separation device layer 300 may be implemented as a transmissive display device. As an example, it may be implemented as a liquid crystal display device without a color filter array. The optical separation device layer 300 includes a lower substrate 310 on which a TFT array is formed and an upper substrate 320 without a color filter array, and a liquid crystal layer 330 is disposed between the lower substrate 310 and the upper substrate 320 . ) can be placed.

Although the optical separation device layer 300 is configured in the form of a panel in the above, it may be formed in a film or patterning structure as follows.

7 is a cross-sectional view illustrating a stereoscopic image display device provided with an optical separation device layer according to the second embodiment, and FIG. 8 is a graph showing a difference in luminance according to the material of the optical separation device layer according to the second embodiment.

Referring to FIG. 7 , a stereoscopic image display device according to the second embodiment includes a display panel 100 that displays a stereoscopic image in an N-view format (N is a natural number), and is disposed on the display panel 100 to It may include a lens layer 200 for separating a right image, and an optical separation device layer 400 including blocks disposed under the lens layer 200 and arranged in a matrix form.

The display panel 100 may be implemented as a transmissive display device and, for example, may be implemented as a liquid crystal display device. The display panel 100 may include a first substrate 110 and a second substrate 120 . A liquid crystal layer (not shown) may be disposed between the first substrate 110 and the second substrate 120 .

The lens layer 200 may include a plurality of switchable areas. The switchable region is defined to have a width corresponding to one pitch (P), and the switchable region having the same pitch (P) may have a shape in which it is periodically repeated in one direction. The lens layer 200 may be formed to have substantially the same pitch as one sub-pixel of the optical separation device layer 300 . The lens layer 200 serves to separate the left and right images.

The optical separation device layer 400 may be electrically controlled to transmit light as it is in the 2D image mode. In addition, the optical separation element layer 400 is electrically controlled to partially block light in the 3D image mode, and spatially separate the propagation paths of light passing through the lens layer to the left and right eyes of the observer. To this end, the light source unit 700 may be disposed under the light separation device layer 400 . In addition, an optical sheet 600 including a diffusion sheet and a prism sheet may be further disposed between the light separation device layer 400 and the light source unit 700 .

The optical separation device layer 400 may include a film structure. The optical separation device layer 400 may include a base film 410 and a matrix-shaped block 430 formed on the base film 410 . The base film 410 may include a material such as polyester (PE) or polycarbonate (PC). A block 430 may be formed on the base film 410 . The block 430 may be formed by patterning in a matrix form on the base film 410 . The block 430 may be formed in the form of a matrix shown in FIGS. 2 and 3 .

When the display panel 100 displays a stereoscopic image in the N-view format, the block 430 corresponding to one sub-pixel of the optical separation device layer 400 may include m×N blocks. (N is a natural number, m is a natural number equal to or greater than 2) Here, one sub-pixel may correspond to blocks arranged horizontally.

The optical device separation layer 400 may be disposed between the display panel 100 and the optical sheet 600 . Alternatively, the optical device separation layer 400 may also be disposed between the optical sheet 600 and the light source unit 700 . However, when the optical device isolation layer 400 is disposed between the display panel 100 and the optical sheet 600 , the luminance value may be further improved. The block 430 may be formed by patterning Al (aluminium), APC (a mixture of Al, Pb, and Cu), and molybdenum-titanium (MoTi). The block 430 may be formed on the base film 410 using a photo process.

As shown in FIG. 8 , when the block is formed of a MoTi material, the luminance may be improved by 1.2 times or more compared to the prior art. On the other hand, when the block is formed of Al or APC material, the luminance may be improved by 1.5 times or more compared to the prior art.

Since Al and APC have a reflective characteristic, when the optical device isolation layer 400 is disposed on the upper portion of the display panel, the color may be deteriorated due to glare. Therefore, it is most effective that the optical separation device layer 400 according to the second embodiment is disposed under the display panel.

The stereoscopic image display device according to the second embodiment has an effect of reducing the thickness of the stereoscopic image display device according to the first embodiment.

9 is a cross-sectional view illustrating a stereoscopic image display device provided with an optical separation device layer according to a third embodiment.

Referring to FIG. 9 , the stereoscopic image display device according to the third embodiment includes a display panel 100 that displays a stereoscopic image in an N-view format (N is a natural number), and is disposed on the display panel 100 to It may include a lens layer 200 for separating a right image, and an optical separation device layer 500 including blocks disposed under the lens layer 200 and arranged in a matrix form.

The display panel 100 may be implemented as a transmissive display device and, for example, may be implemented as a liquid crystal display device. The display panel 100 may include a first substrate 110 and a second substrate 120 . A liquid crystal layer (not shown) may be disposed between the first substrate 110 and the second substrate 120 . A lower polarizing plate 130 may be disposed on a lower portion of the first substrate 110 , and an upper polarizing plate 140 may be disposed on an upper portion of the second substrate 120 .

The lens layer 200 may include a plurality of switchable areas. The switchable region is defined to have a width corresponding to one pitch (P), and the switchable region having the same pitch (P) may have a shape in which it is periodically repeated in one direction. The lens layer 200 may be formed to have substantially the same pitch as one sub-pixel of the optical separation device layer 500 . The lens layer 200 serves to separate the left and right images.

The optical separation element layer 500 may be electrically controlled to transmit light as it is in the 2D image mode. In addition, the optical separation element layer 500 is electrically controlled to partially block light in the 3D image mode, thereby spatially separating the propagation paths of light passing through the lens layer 200 to the left and right eyes of the observer. To this end, the light source unit 700 may be disposed under the light separation device layer 500 . In addition, an optical sheet 600 including a diffusion sheet and a prism sheet may be further disposed between the light separation device layer 500 and the light source unit 700 .

The optical separation device layer 500 may include a pattern structure. The optical separation device layer 500 may be disposed under the display panel 100 . The optical separation device layer 500 may be disposed between the first substrate 110 and the lower polarizing plate 130 . The optical separation device layer 500 may include a block in the form of a matrix. The block may be formed in a matrix form as shown in FIGS. 2 and 3 .

When the display panel 100 displays a stereoscopic image in the N-view format, blocks corresponding to one sub-pixel of the optical separation device layer 300 may include m×N blocks. (N is a natural number, m is a natural number equal to or greater than 2) Here, one sub-pixel may correspond to blocks arranged horizontally.

The optical separation device layer 500 may be formed by patterning blocks under the first substrate 110 . Blocks can be formed by patterning Al (aluminium), APC (a mixture of Al, Pb, and Cu), and molybdenum-titanium (MoTi). The pattern may be formed under the first substrate 110 using a photo process.

When the block is formed of a MoTi material, the luminance can be improved by 1.2 times compared to the conventional one. On the other hand, when the block is formed of Al or APC material, the luminance may be improved by 1.5 times compared to the prior art.

When the block is patterned with Al or APC material, since it has a reflective characteristic, when it is formed on the second substrate 120 , the color may be deteriorated due to glare. Therefore, it is most effective to form the optical separation device layer 500 according to the third embodiment under the first substrate 110 .

The stereoscopic image display device according to the third embodiment has an effect of further reducing its thickness compared to the stereoscopic image display device according to the first embodiment and the stereoscopic image display device according to the second embodiment. In addition, by directly patterning the optical separation device layer under the first substrate, there is an effect that the alignment step can be omitted.

Although the above has been described with reference to the drawings and embodiments, it will be understood by those skilled in the art that various modifications and changes can be made to the embodiments without departing from the spirit of the embodiments described in the claims below. will be able

100: display panel 110: first substrate
120: second substrate 130: lower polarizing plate
140: upper polarizing plate 200: lens layer
300, 400, 500: optical separation element layer 410: base film
430: block PSA1, PSA2: adhesive layer

Claims (14)

a display panel for displaying a stereoscopic image in an N-view format;
a lens layer disposed on the display panel to separate left and right images; and
It includes a block in the form of a matrix disposed on one side of the lens layer to selectively pass light, and the block corresponding to one sub-pixel is an optical separation element layer consisting of m×N pieces;
The optical separation device layer displays the stereoscopic image such that the view progresses in a vertical direction and the same view is repeated two or more times in the one sub-pixel. (N is a natural number, m is a natural number greater than or equal to 2) The method of claim 1,
A stereoscopic image display device in which the same view is repeated m times in one sub-pixel of the optical separation device layer. The method of claim 1,
The lens layer has a plurality of swatchable regions, and one swatchable region has a width corresponding to one pitch. 4. The method according to any one of claims 1 to 3,
The optical separation device layer includes a first substrate on which a TFT array is formed, a second substrate disposed on the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. 5. The method of claim 4,
The optical separation device layer is disposed under the lens layer, and the optical separation device layer is disposed between the display panel and the lens layer or under the display panel. 5. The method of claim 4,
The lens layer is disposed below the optical separation device layer, and the lens layer is disposed between the optical separation device layer and the display panel. 4. The method according to any one of claims 1 to 3,
The optical separation device layer is a stereoscopic image display device comprising a base film and a matrix-shaped block on the base film. 8. The method of claim 7,
The block is a stereoscopic image display device including a pattern of Al, APC (a mixture of Al, Pb, Cu) material. 8. The method of claim 7,
The stereoscopic image display device further includes an optical sheet under the display panel and a light source unit disposed under the optical sheet, wherein the light separation device layer is disposed between the display panel and the optical sheet. 4. The method according to any one of claims 1 to 3,
The optical separation element layer is patterned and disposed on one side of the display panel. 11. The method of claim 10,
The display panel includes a first substrate, a second substrate facing the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, and a lower polarizing plate disposed on one side of the first substrate. wherein the optical separation element layer is disposed between the first substrate and the lower polarizing plate. 12. The method of claim 11,
The optical separation device layer is a stereoscopic image display device in which blocks are patterned on one surface of the first substrate. 13. The method of claim 12,
The block is a stereoscopic image display device including Al, APC (a mixture of Al, Pb, Cu) material. 14. The method of claim 13,
The stereoscopic image display device further comprising an optical sheet under the display panel and a light source unit disposed under the optical sheet.

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