KR20160094833A - Three dimension display device - Google Patents

Abstract

A three dimensional image display device according to an embodiment comprises: a display panel for displaying a three dimensional image of an N view format; a lens layer which is arranged on the display panel and separates left and right images; and a block in the form of a matrix which is arranged on one side of the lens layer and selectively passes through the light. The block corresponding n number of sub pixels may comprise a light separation device layer consisting of m*N. In the embodiment, brightness can be further improved by designing such that the same view in n number of sub pixels is repeated.

Description

[0001] THREE DIMENSION DISPLAY DEVICE [0002]

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

The stereoscopic image display device displays stereoscopic images by using the appearance of perspective when different image signals recognized by the two eyes are synthesized. The stereoscopic image display apparatus can be divided into a binocular parallax system, a volumetric system, and a holographic system.

Binocular parallax can be classified into spectacles and non - astigmatism. Recently, non - astigmatism has been actively studied. There are two types of non-fixed lenses: Parallax Barrier and Lentkular Lens.

In the parallax barrier method, slit vertical slits are arranged at regular intervals in order to transmit or block light, so that the left and right images can be accurately separated from each other through a slit at a specific time point, thereby realizing a 3D image. The parallax barrier method is problematic in terms of brightness, difficulty in fabrication, and diffraction by the barrier.

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

Conventionally, a sub-pixel is divided into N to form a barrier layer. Since the view design proceeds in the vertical direction with respect to one sub-pixel, there is a problem that resolution and brightness in the vertical direction are lowered as the number of views increases .

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

N개로 이루어지는 광분리소자층을 포함할 수 있다.According to an embodiment of the present invention, there is provided a stereoscopic image display apparatus including a display panel for displaying stereoscopic images of N view format, a lens layer disposed on the display panel for separating left and right images, And a matrix-type block disposed on one side of the layer and selectively passing the light, wherein the block corresponding to the one sub-pixel is m

And may include an optical separation element layer made of N pieces.

The embodiment can further improve the luminance by designing that the same view is repeated in one sub-pixel.

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

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 isolator layer to increase compared to the conventional structure in which the same view is displayed.

In addition, the embodiment has the effect of reducing the total thickness of the display device by forming the optical isolating element layer in the form of a film or a pattern.

FIG. 1 is a cross-sectional view illustrating a stereoscopic image display apparatus having a light-separating element layer according to a first embodiment of the present invention.
FIG. 2 and FIG. 3 are block diagrams showing the structure of the optical isolating element layer according to the first embodiment.
4 is a table showing luminance and resolution of the stereoscopic image display device according to the first embodiment.
FIGS. 5 and 6 are cross-sectional views illustrating modifications of the stereoscopic image display device having the optical isolating device layer according to the embodiment.
FIG. 7 is a cross-sectional view illustrating a stereoscopic image display device having an optical isolating device layer according to a second embodiment of the present invention.
8 is a graph showing a difference in luminance according to the material of the optical isolating device layer according to the second embodiment.
9 is a cross-sectional view illustrating a stereoscopic image display apparatus including the optical isolating element layer according to the third embodiment.

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

FIG. 1 is a cross-sectional view illustrating a stereoscopic image display device having an optical isolating device layer according to an exemplary embodiment of the present invention, and FIG. 2 is a block diagram illustrating a structure of an optical isolating device according to a first exemplary embodiment.

1 and 2, the stereoscopic image display apparatus according to the embodiment includes a display panel 100 for displaying a stereoscopic image of N view format (where N is a natural number), and a display panel 100 disposed on the display panel 100, A lens layer 200 for separating left and right images and a light splitting element layer 300 including blocks arranged in a matrix below the lens layer 200. A first adhesive layer PSA1 is disposed between the display panel 100 and the optical splitter layer 300 and a second adhesive layer PSA2 is disposed between the optical splitter layer 300 and the lens layer 200. [ .

The display panel 100 may be implemented as a transmissive display device, for example, 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 may be 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 supplied with R, G and B data voltages, a plurality of gate lines (or scan lines) supplied with gate pulses (or scan pulses) intersecting with the data lines, And a plurality of TFTs formed at intersections of the gate lines, a plurality of pixel electrodes for charging data voltages to the liquid crystal cells, and storage capacitors connected to the pixel electrodes to sustain voltages of the liquid crystal cells 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 a vertical electric field driving method such as TN (Twisted Nematic) mode and VA (Vertical Alignment) mode, and is driven by a horizontal electric field drive such as an In Plane Switching (IPS) mode and a Fringe Field Switching And the second substrate 120 together with the pixel electrode.

Polarizing plates 130 and 140 may be attached to the first substrate 110 and the second substrate 120 and an alignment layer may be formed on the inner surface of the first substrate 110 and the second substrate 120 to set the pretilt angle of the liquid crystal.

The display panel 100 may include a first driving unit (not shown). The first driving unit 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 driving unit converts the RGB digital video data from the controller into an analog gamma voltage to generate RGB data voltages and supplies the RGB data voltages to the data lines of the display panel 100 under the control of the controller.

Although not shown, a backlight unit for providing light at the lower portion of the display panel may be further disposed. The backlight unit serves to provide light to the display panel.

In the above description, the display panel is a liquid crystal display panel. However, 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 (SAs). The switchable area SA is defined to have a width corresponding to a pitch of a pixel or a sub pixel and may have a shape in which the sumpable area SA having the same pitch is periodically repeated in one direction. The lens layer 200 may be formed to be substantially equal to the pitch of one pixel or one sub-pixel of the optical isolating element layer 300. The lens layer 200 serves to separate the left and right images.

The optical isolator element layer 300 is electrically controlled to transmit light from a backlight unit (not shown) as it is in the 2D image mode. In addition, the optical isolator layer 300 is electrically controlled to partially block the light from the backlight unit in the 3D image mode so that the path of light traveling through the lens layer 200 and traveling to the left and right eyes of the observer is spatially . To this end, the optical isolating element layer 300 may be implemented as a transmissive display element. For example, a liquid crystal display device having no color filter array can be realized. The optical isolator 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 provided between the lower glass substrate 310 and the upper glass substrate 320 The liquid crystal layer 330 may be disposed.

In the above description, the optical isolator 300 is formed as a panel. However, the present invention is not limited to this, and the optical isolator 300 may be realized in the form of a film.

The lens layer 200 and the optical isolator element layer 300 uniformly irradiate the display panel 100 in the 2D mode while horizontally dividing the light that has passed through the lens layer 200 in the 3D mode . RGB data voltages arranged in a 2D data format in a 2D mode are supplied to the display panel 100, and RGB data voltages arranged in 3D image data are supplied in a 3D mode. The display panel 100 and the optical splitter layer 300 may be driven at a predetermined frame rate so as 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 isolator 300.

A second driving unit (not shown) may be connected to the optical isolator 300. The second driver includes a data driving circuit for supplying a white gradation voltage and a black gradation voltage to the data lines of the optical isolator 300 and a gate driver sequentially supplying gate pulses to the gate lines of the optical isolator 300 And a gate driving circuit for driving the gate driver. The data driving circuit of the second driving unit converts the digital white data inputted from the controller into the gamma voltage of peak white gradation in the 2D mode to generate white gradation voltages and controls the white voltages to be applied to the optical isolator 300 under the control of the controller. To the data lines. The data driving circuit of the second driving unit converts the digital white data and the digital black data inputted from the controller in the 3D mode into the gamma voltages of the peak white gradation and the peak black gradation voltage to generate white gradation voltages and black gradation voltages And supplies the white gradation voltages and black gradation voltages to the data lines of the optical isolator 300 under the control of the controller.

The controller controls the first and second driving units in a 2D mode or a 3D mode in response to a 2D / 3D mode selection signal of the user input through the user interface or a 2D / 3D identification code extracted from the input video signal.

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 splitter layer 300 includes m × N blocks (N is a natural number, and m is a natural number of 2 or more). Here, one sub-pixel may correspond to horizontally arranged blocks.

The optical isolating element layer 300 may be formed of a plurality of sub-pixels. The optical isolating element layer 300 may be designed such that the view is in the vertical direction. When the optical isolating element layer 300 displays stereoscopic images in 8 view format, the blocks of the optical isolating element layer 300 may include a total of 16 × 16 structures. A block corresponding to one sub-pixel may include 16, and the same view may be repeated twice.

When the first view is displayed in the uppermost sub-pixel, the second through eighth views may be sequentially and repeatedly displayed in the sub-pixels arranged vertically below. When displaying the first view, the white gradation voltage is charged in the uppermost sub-pixel and the black gradation voltage is charged in the other sub-pixels. At this time, the first view is displayed in the ninth block and the first view can be displayed twice in the sub-pixel disposed at the highest position.

If the same view is repeated twice in one sub-pixel, the luminance can be improved as compared with the conventional one. In addition, the resolution in the vertical direction can be improved while the view progresses in the vertical direction. Also, since the block of the optical isolator 300 is designed to increase in comparison with the conventional one, the OVD can be increased compared to the same back distance condition.

FIG. 3 is a view showing a block structure of the optical isolating element layer according to the first embodiment.

3, when the display panel 100 displays a stereoscopic image in an N view format, one sub-pixel of the optical splitter layer 300 may include m × N blocks. N is a natural number, and m is a natural number of 2 or more). Here, one sub-pixel may include horizontally arranged blocks.

The optical isolating element layer 300 may be formed of a plurality of sub-pixels. The optical isolating element layer 300 may be designed such that the view is in the vertical direction. When the optical isolating element layer 300 displays stereoscopic images in a 4-view format, the blocks of the optical isolating element layer 300 may include a total of 16 × 16 structures. The block corresponding to one subpixel may include 16, and the same view may be repeated four times.

When the first view is displayed in the uppermost sub-pixel, the second through eighth views may be sequentially and repeatedly displayed in the sub-pixels arranged vertically below. When displaying the first view, the white gradation voltage is charged in the uppermost sub-pixel and the black gradation voltage is charged in the other sub-pixels. At this time, the first view is displayed in the fifth block, the ninth block, and the thirteenth block in the uppermost sub-pixel, so that the first view can be displayed four times.

If the same view is repeated four times in one sub-pixel, the luminance can be improved as compared with the conventional one. In addition, the resolution in the vertical direction can be improved while the view progresses in the vertical direction. Also, since the block of the optical isolator 300 is designed to increase in comparison with the conventional one, the OVD can be increased compared to the same back distance condition.

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

As shown in FIG. 4, the conventional example having the same number of blocks and the same number of views as the N-view and the mN block is compared, It can be seen that the 3D line image is improved by 2 times and 4 times as compared with the device. In addition, when the amount of change in luminance is observed, it can be seen that the stereoscopic image display according to the embodiment is improved by two times and four times as compared with the conventional one. Particularly, when it is made up of 16 blocks for 4 views, it can be seen that the effect is the best.

FIG. 5 is a cross-sectional view illustrating another stereoscopic image display apparatus including the optical isolating element layer according to the embodiment.

5, a stereoscopic image display apparatus according to another embodiment includes a display panel 100 for displaying a stereoscopic image of N view format, a lens (not shown) disposed on the display panel 100 for separating left and right images, Layer 200 and a layer of a matrix disposed below the lens layer 200 and one subpixel may include a layer of optical isolator device 300 comprising m x N blocks . Here, the configuration of the display panel 100 and the optical isolator 300 is the same as that of the stereoscopic image display apparatus of FIG.

The display panel 100 may be implemented as a transmissive display device, for example, 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 sumpable region having the same pitch P may have a shape repeated periodically in one direction. The lens layer 200 may be formed to be substantially equal to the pitch of one sub-pixel of the optical isolator layer 300. The lens layer 200 serves to separate the left and right images.

The optical isolator element layer 300 is electrically controlled to transmit light from a backlight unit (not shown) as it is in the 2D image mode. In addition, the optical isolator element layer 300 is electrically controlled to partly block the light from the backlight unit in the 3D image mode and transmit the lens layer to spatially separate the traveling path of the light traveling to the left and right eyes of the observer. To this end, the optical isolating element layer 300 may be implemented as a transmissive display element. For example, a liquid crystal display device having no color filter array can be realized. The optical isolator 300 includes a lower substrate 310 on which a TFT array is formed and an upper substrate 320 on which a color filter array is not formed and a liquid crystal layer 330 May be disposed.

6 is a cross-sectional view illustrating a modification of the stereoscopic image display device having the optical isolating device layer according to the embodiment.

6, a stereoscopic image display apparatus according to another embodiment includes a display panel 100 for displaying a stereoscopic image of N view format, a lens (not shown) disposed on the display panel 100 for separating left and right images, Layer 200, and a matrix-shaped block disposed on the lens layer 200. One sub-pixel may include a light splitter layer 300 including mxN blocks. Since the structure of the display panel 100, the lens layer 200, and the optical isolator 300 is the same as that of FIG. 1 except for the arrangement structure, the description will be omitted.

The display panel 100 may be implemented as a transmissive display device, for example, 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 sumpable region having the same pitch P may have a shape repeated periodically in one direction. The lens layer 200 may be formed to be substantially equal to the pitch of one sub-pixel of the optical isolator layer 300. The lens layer 200 serves to separate the left and right images.

The optical isolator element layer 300 is electrically controlled to transmit light from a backlight unit (not shown) as it is in the 2D image mode. In addition, the optical isolator element layer 300 is electrically controlled to partly block the light from the backlight unit in the 3D image mode and transmit the lens layer to spatially separate the traveling path of the light traveling to the left and right eyes of the observer. To this end, the optical isolating element layer 300 may be implemented as a transmissive display element. For example, a liquid crystal display device having no color filter array can be realized. The optical isolator 300 includes a lower substrate 310 on which a TFT array is formed and an upper substrate 320 on which a color filter array is not formed and a liquid crystal layer 330 May be disposed.

In the above description, the optical isolator 300 is formed as a panel, but it may be formed as a film or a patterning structure as follows.

FIG. 7 is a cross-sectional view illustrating a stereoscopic image display device including the optical isolating device layer according to the second exemplary embodiment. FIG. 8 is a graph illustrating a luminance difference according to the material of the optical isolating device layer according to the second exemplary embodiment.

7, the stereoscopic image display apparatus according to the second embodiment includes a display panel 100 for displaying a stereoscopic image of N view format (where N is a natural number), a display panel 100 disposed on the display panel 100, A lens layer 200 separating the right image and a light splitting element layer 400 disposed below the lens layer 200 and including a block arranged in a matrix form.

The display panel 100 may be implemented as a transmissive display device, for example, 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 sumpable region having the same pitch P may have a shape repeated periodically in one direction. The lens layer 200 may be formed to be substantially equal to the pitch of one sub-pixel of the optical isolator layer 300. The lens layer 200 serves to separate the left and right images.

The optical isolator layer 400 may be electrically controlled to transmit light in the 2D image mode as it is. In addition, the optical isolator element layer 400 is electrically controlled to partially block the light in the 3D image mode and transmit the lens layer to spatially separate the traveling path of the light traveling to the left and right eyes of the observer. For this purpose, the light source unit 700 may be disposed under the optical isolator layer 400. Further, an optical sheet 600 including a diffusion sheet and a prism sheet may be further disposed between the optical isolator layer 400 and the light source unit 700. [

The optical isolating element layer 400 may comprise a film structure. The optical isolator layer 400 may include a base film 410 and a block 430 in the form of a matrix formed on the base film 410. The base film 410 may include a material such as polyester (PE), polycarbonate (PC), or the like. A block 430 may be formed on the base film 410. The block 430 may be patterned in the form of a matrix on the base film 410. The block 430 may be formed in a matrix form as shown in FIGS.

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 splitter layer 400 may include m × N blocks (N And m is a natural number of 2 or more). Here, one sub-pixel may correspond to horizontally arranged blocks.

The optical element separation layer 400 may be disposed between the display panel 100 and the optical sheet 600. Alternatively, the optical device separation layer 400 may be disposed between the optical sheet 600 and the light source 700. However, when the optical element separation layer 400 is disposed between the display panel 100 and the optical sheet 600, the luminance value can be further improved. The block 430 can be formed by patterning Al (aluminum), APC (mixture of Al, Pb, 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 made of a MoTi material, the brightness can be improved by 1.2 times or more as compared with the conventional one. Alternatively, when the block is formed of Al or APC material, the brightness can be improved by 1.5 times or more as compared with the conventional method.

Since the Al and APC have a reflecting characteristic, when the optical element separating layer 400 is disposed on the upper part of the display panel, the color tone may be deteriorated due to glare. Therefore, it is most effective that the optical isolating element layer 400 according to the second embodiment is arranged below the display panel.

The stereoscopic image display device according to the second embodiment has the 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 apparatus including the optical isolating element layer according to the third embodiment.

9, the stereoscopic image display apparatus according to the third embodiment includes a display panel 100 for displaying a stereoscopic image of N view format (N is a natural number), and a display panel 100 disposed on the display panel 100, A lens layer 200 for separating the right image and a light splitting element layer 500 including a block disposed below the lens layer 200 and arranged in a matrix form.

The display panel 100 may be implemented as a transmissive display device, for example, 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 lower polarizer 130 may be disposed on the lower portion of the first substrate 110 and the upper polarizer 140 may be disposed on the 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 sumpable region having the same pitch P may have a shape repeated periodically in one direction. The lens layer 200 may be formed to be substantially equal to the pitch of one sub-pixel of the optical isolating element layer 500. The lens layer 200 serves to separate the left and right images.

The optical isolator layer 500 may be electrically controlled to transmit light in the 2D image mode as it is. In addition, the optical isolator element layer 500 is electrically controlled to partially block the light in the 3D image mode and to transmit the light through the lens layer 200 to spatially separate the traveling path of the light traveling to the left and right eyes of the observer. For this purpose, the light source unit 700 may be disposed under the optical isolator layer 500. Further, an optical sheet 600 including a diffusion sheet and a prism sheet may be further disposed between the optical isolator layer 500 and the light source unit 700.

The optical isolating element layer 500 may include a pattern structure. The optical isolator layer 500 may be disposed below the display panel 100. The optical isolator layer 500 may be disposed between the first substrate 110 and the lower polarizer plate 130. The optical isolator element layer 500 may include a block in the form of a matrix. The block may be formed in the form of a matrix as shown in FIG. 2 and FIG.

When the display panel 100 displays a stereoscopic image in an N view format, a block corresponding to one sub-pixel of the optical splitter layer 300 may include m × N blocks (N is a natural number, m is a natural number of 2 or more), where one subpixel may correspond to horizontally arranged blocks.

The optical isolator layer 500 may be formed by patterning a block on a lower portion of the first substrate 110. The block can be formed by patterning Al (aluminum), APC (mixture of Al, Pb, Cu), and molybdenum-titanium (MoTi). The pattern may be formed under the first substrate 110 using a photo process.

When the block is made of MoTi material, the brightness can be increased 1.2 times as compared with the conventional one. In contrast, when the block is made of Al or APC material, the brightness can be improved by 1.5 times as compared with the conventional one.

When the block is patterned with Al or APC material, the coloring may be deteriorated due to glare when the block is formed on the second substrate 120 because it has a reflecting characteristic. Therefore, it is most effective that the optical isolating element layer 500 according to the third embodiment is formed under the first substrate 110.

The stereoscopic image display apparatus according to the third embodiment can further reduce the thickness of the stereoscopic image display apparatus according to the first embodiment and the stereoscopic image display apparatus according to the second embodiment. Further, the alignment step can be omitted by directly patterning the optical isolating element layer on the lower portion of the first substrate.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the following claims. It will be possible.

100: display panel 110: first substrate
120: second substrate 130: lower polarizer plate
140: upper polarizer 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 of N view format;
A lens layer disposed on the display panel to separate left and right images; And
And a matrix-shaped block disposed on one side of the lens layer and selectively passing the light, wherein the block corresponding to the one sub-pixel is m

And a plurality of N optical separation element layers. (N is a natural number, and m is a natural number of 2 or more) The method according to claim 1,
And the same view is repeated m times in one sub-pixel of the optical isolating element layer. The method according to claim 1,
Wherein the lens layer has a plurality of sumpable regions and the one swathable region has a width corresponding to one pitch. 4. The method according to any one of claims 1 to 3,
Wherein the optical separation element 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,
Wherein the optical separation element layer is disposed below the lens layer and the optical separation element layer is disposed between the display panel and the lens layer or disposed under the display panel. 5. The method of claim 4,
Wherein the lens layer is disposed below the optical splitter layer and the lens layer is disposed between the optical splitter layer and the display panel. 4. The method according to any one of claims 1 to 3,
Wherein the optical isolator element layer comprises a base film and a block in the form of a matrix on the base film. 8. The method of claim 7,
Wherein the block includes a pattern of Al, APC (mixture of Al, Pb, Cu) material. 8. The method of claim 7,
Wherein the display panel further includes an optical sheet and a light source portion disposed under the optical sheet, wherein the optical separation element layer is disposed between the display panel and the optical sheet. 4. The method according to any one of claims 1 to 3,
Wherein the optical separation element layer is patterned on one side of the display panel. 11. The method of claim 10,
The display panel includes a first substrate, a second substrate disposed opposite to the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, and a lower polarizer plate disposed on one side of the first substrate And the optical separation element layer is disposed between the first substrate and the lower polarizer. 12. The method of claim 11,
Wherein the optical separation element layer is formed by patterning a block on one surface of a first substrate. 13. The method of claim 12,
Wherein the block comprises Al, APC (mixture of Al, Pb, Cu) material. 14. The method of claim 13,
Wherein the display panel further includes an optical sheet and a light source unit disposed under the optical sheet.

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