KR101751342B1 - Stereoscopic 3d display device - Google Patents

Abstract

The stereoscopic image display apparatus of the present invention is a barrier type stereoscopic image display apparatus using a twisted nematic (TN) liquid crystal, in which a view angle compensation layer is formed outside a polarizing plate of an image panel to minimize light leakage due to a parallax barrier Thereby realizing a clear 3D image.
The stereoscopic image display device of the present invention minimizes the light leakage caused by using the TN liquid crystal as the liquid crystal layer of the liquid crystal lens, thereby suppressing crosstalk and providing a clear 3D image.

Description

[0001] STEREOSCOPIC 3D DISPLAY DEVICE [0002]

[0001] The present invention relates to a stereoscopic image display apparatus, and more particularly, to a stereoscopic image display apparatus using a twisted nematic (TN) liquid crystal in which a light leakage due to a parallax barrier is minimized .

A simple definition of 3D display is "the total system that artificially reproduces the 3D screen".

Here, the system includes a software technique that can be viewed in 3D and a hardware that actually realizes the content created by the software technique in 3D. The reason for incorporating the software area is that the 3D display hardware requires separately configured contents in a separate software manner for each stereoscopic implementation method.

In addition, the virtual 3D display makes it possible to literally feel the stereoscopic effect in the flat display hardware by using the binocular disparity which is caused when the eye is about 65 mm away from the horizontal direction among the various factors of the human feeling of three-dimensional feeling System. In other words, our eyes see a different image (a little bit of space between the left and the right, respectively) even if we look at the same things because of binocular parallax. When these two images are transmitted to the brain through the retina, By fusing them exactly, we can feel the stereoscopic effect. It is the virtual 3D display that uses it to create a virtual stereoscopic effect through a design that simultaneously displays two left and right images on a 2D display device and sends them to each eye.

In order to display images of two channels on one screen in such a virtual 3D display hardware device, in most cases, one channel is changed one line at a time horizontally or vertically in one screen. At the same time, when images of two channels are output from one display device, in the case of a non-eyeglass system due to the hardware structure, the right image enters the right eye as it is, and the left image enters only the left eye. In addition, in the case of wearing the glasses, the right image is visually obscured by the special glasses suitable for each method, and the left image is obscured by the right eye so that the right eye can not be seen.

As mentioned above, the binocular parallax due to the interval between the two eyes is the most important factor for the person to feel the three-dimensional feeling and the depth feeling, but there is also a deep relationship with the psychological and memory factors. Accordingly, Dimensional image information, a volumetric type, a holographic type, and a stereoscopic type based on whether the three-dimensional image information can be provided.

The volume expression method is a method for making the depth direction perceive by the psychological factors and the suction effect, and is a three-dimensional computer graphic which displays the perspective method, overlapping, shading, contrast, and movement by calculation, So-called IMAX films, which give rise to an optical illusion that it is sucked into the space by providing a large screen.

The three-dimensional representation known as the most complete stereoscopic imaging technique can be represented by laser light reproduction holography or white light reproduction holography.

As described above, when an association image of a plane including parallax information is displayed on the left and right sides of a human being present at a distance of about 65 mm as described above, the brain expresses three-dimensional images using the physiological factors of both eyes. And the ability to generate spatial information before and after the display surface in the process of fusing them to sense a stereoscopic effect, that is, stereography. Such a three-dimensional expression system is largely classified into a system in which glasses are worn and a system in which glasses are not worn.

Representative examples of a method of not wearing glasses include a lenticular method and a parallax barrier method in which a lenticular lens plate vertically arranging a cylindrical lens is disposed in front of the display panel.

1 is a cross-sectional view showing a typical lenticular lens type stereoscopic image display apparatus.

As shown in the drawing, a typical lenticular lens type stereoscopic image display apparatus includes a liquid crystal panel 10 in which upper and lower substrates 12 and 14, liquid crystal 13 are filled therebetween, And a lenticular plate 20 positioned on a front surface of the liquid crystal panel 10 for realizing a stereoscopic image.

At this time, first and second polarizers 11 and 15 are attached to the upper surface of the upper substrate 12 and the lower surface of the lower substrate 14, respectively.

The lenticular plate 20 is formed by forming a material layer of a convex lens shape on an upper surface of a flat substrate.

Here, the image image transmitted through the liquid crystal panel 10 passes through the lenticular plate 20 and another group of images comes into each eye of the final observer, so that a three-dimensional stereoscopic image can be felt.

The liquid crystal panel 10 and the lenticular plate 20 are supported by an instrument or the like so that the first polarizer 11 on the liquid crystal panel 10 and the lenticular plate 20 on the liquid crystal panel 10, Are spaced apart from each other by a predetermined distance.

In this case, the liquid crystal panel 10 or the lenticular plate 20 may be sagged or bent into a space between the first polarizer 11 and the lenticular plate 20 on the liquid crystal panel 10. If such a bending phenomenon occurs, there is a problem that the light path that finally passes through the backlight unit 30, the liquid crystal panel 10, and the lenticular plate 20 is generated and the image quality is lowered.

In addition, using the parallax barrier method has the advantage that it can be watched without wearing glasses, but it has a disadvantage that 2D and 3D conversion is impossible.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stereoscopic image display apparatus using a liquid crystal lens as a parallax barrier instead of a lenticular lens.

It is another object of the present invention to provide a stereoscopic image display device which minimizes light leakage caused by the parallax barrier.

Other objects and features of the present invention will be described in the following description of the invention and claims.

According to an aspect of the present invention, there is provided a stereoscopic image display device including a liquid crystal lens driven by a liquid crystal layer made of TN (Twisted Nematic) liquid crystal according to a voltage applied thereto, A first polarizing plate and a second polarizing plate attached to upper and lower portions of the image panel, respectively, and a second polarizing plate attached to the upper portion of the liquid crystal lens, wherein light absorption in a direction perpendicular to a light absorption axis of the first polarizing plate A third polarizer having an axis and a discotic liquid crystal (DLC) disposed outside the first polarizer between the liquid crystal lens and the image panel.

Here, the light source further includes a light source positioned below the image panel and transmitting light to the image panel.

The liquid crystal lens includes: a first substrate and a second substrate which are defined by a plurality of lens regions having a plurality of partial regions and are spaced apart from each other; A plurality of first electrodes formed on an inner surface of the first substrate and a plurality of second electrodes formed on an inner surface of the second substrate, for each of the lens regions; And a liquid crystal layer formed between the first substrate and the second substrate.

And a second polarizer attached to a lower portion of the image panel when the liquid crystal display device is used as the image panel.

And a third polarizer attached to the outside of the upper portion of the liquid crystal lens.

In this case, the third polarizing plate has a light absorption axis in a direction perpendicular to the light absorption axis of the first polarizing plate.

And an adhesive layer adhered to a lower portion of the liquid crystal lens and adhering the liquid crystal lens to the image panel.

In this case, the adhesive layer is located between the first polarizer and the image panel. Alternatively, the adhesive layer is located between the liquid crystal lens and the DLC layer.

As described above, according to the stereoscopic image display apparatus of the present invention, since the liquid crystal lens is used as a parallax barrier, switching between 2D and 3D is freely performed, and there is no warping phenomenon, thereby improving image quality.

The stereoscopic image display device according to the present invention minimizes crosstalk caused by using a Twisted Nematic (TN) liquid crystal as a liquid crystal lens, thereby providing an effect of realizing a clear 3D image by suppressing crosstalk do.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a stereoscopic image display apparatus of a general lenticular lens system. Fig.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a stereoscopic image display apparatus.
3 is a cross-sectional view illustrating the structure of the liquid crystal lens shown in FIG. 2, for example.
4 is a cross-sectional view schematically showing a stereoscopic image display apparatus of a liquid crystal lens type according to a second embodiment of the present invention.
FIG. 5 is a cross-sectional view schematically illustrating a view angle compensation structure in a liquid crystal lens type stereoscopic image display apparatus according to a second embodiment of the present invention shown in FIG.
6 is a cross-sectional view schematically showing a stereoscopic image display apparatus of a liquid crystal lens type according to a third embodiment of the present invention.
FIG. 7 is a cross-sectional view schematically illustrating a viewing angle compensation structure in a liquid crystal lens type stereoscopic image display apparatus according to a third embodiment of the present invention shown in FIG. 6; FIG.
8 and 9 are photographs showing the result of simulating light leakage in a black state.

Hereinafter, a preferred embodiment of a stereoscopic image display device according to the present invention will be described in detail with reference to the accompanying drawings.

In the case of a conventional lenticular lens or the like, the shape of the lens is fixed and the movement of the lens is not possible. However, in the case of the present invention, the liquid crystal lens is formed by the refractive index change having a slope in the shape of the plane lens, .

That is, a general lens controls the path of the incident light according to the position by using the refractive index difference between the material constituting the lens and air. However, it is possible to configure the liquid crystal layer to be driven by different vertical electric fields for each position by applying different voltages to the liquid crystal layers at different positions without forming the lens of such a physical shape. Then, the incident light incident on the liquid crystal layer experiences a different phase change for each position, and as a result, the liquid crystal layer can control the path of the incident light like an actual lens. An array structure including a liquid crystal and electrodes for driving the liquid crystal is called a liquid crystal lens when the vertical electric field is applied and the transmission of light by the driving of the liquid crystal is achieved as it is transmitted through the lens.

FIG. 2 is a cross-sectional view schematically showing a stereoscopic image display apparatus of a liquid crystal lens type according to a first embodiment of the present invention, and shows a stereoscopic image display apparatus using the liquid crystal lens as a parallax barrier.

3 is a cross-sectional view illustrating the structure of the liquid crystal lens shown in FIG. 2, for example. However, the present invention is not limited to the electrode structure of the liquid crystal lens shown in FIG. 3, and the liquid crystal lens according to the present invention can be implemented through various electrode structures.

As shown in the drawing, the stereoscopic image display apparatus according to the first embodiment of the present invention includes a liquid crystal lens 120 driven by a voltage applied thereto and having a lens function, And a light source 130 disposed below the image panel 110 and transmitting light to the image panel 110. The image panel 110 includes a light source 130,

In this case, if the image panel 110 directly emits light, the light source 130 may be omitted.

The first and second image pixels, which respectively display the first and second images, are sequentially and repeatedly arranged in the image panel 110. The image panel 110 may be a liquid crystal display device of a direct view type or a projection type, An organic light emitting diode display (OLED), a field emission display (FED), a plasma display panel (PDP), an electroluminescent display Display (EL) may be used.

When a liquid crystal display device is used as the image panel 110, a liquid crystal mode, i.e., a twisted nematic (TN) mode, an in-plane switching mode (IPS) mode and a vertical alignment mode It is applicable regardless.

In this case, the image panel 110 includes a color filter substrate 112 and an array substrate 114, and a liquid crystal layer 113 formed between the color filter substrate 112 and the array substrate 114 ).

A first polarizing plate 111 and a second polarizing plate 115 are attached to the upper and lower portions of the image panel 110, respectively. The upper and lower portions of the image panel 110 are not limited to specific positions and thus the first polarizer 111 is positioned below the image panel 110 and the second polarizer 111 is disposed on the upper portion of the image panel 110. [ The polarizing plate 115 may be positioned.

The liquid crystal lens 120 according to the first embodiment of the present invention has a function of emitting a two-dimensional image signal as a three-dimensional image signal as a profile of a lens surface, 110 and selectively emits a three-dimensional image signal or a two-dimensional image signal according to whether a voltage is applied or not. That is, by using the characteristic that the light is transmitted when the voltage is not applied, the switching function such as the two-dimensional display when the voltage is not applied and the three-dimensional display when the voltage is applied can be used.

Hereinafter, the structure of the liquid crystal lens 120 according to the first embodiment of the present invention will be described in detail.

The liquid crystal lens 120 according to the first exemplary embodiment of the present invention includes a first substrate 122 and a second substrate 124 having a plurality of lens regions defined and spaced apart from each other, And a liquid crystal layer 123 formed between the two substrates 124.

At this time, a common electrode 125 made of a transparent conductive material, that is, a first electrode is formed on the entire surface of the first substrate 122 on the first substrate 122 as an upper substrate.

A plurality of second electrodes 127a and 127b are formed on an inner surface of the second substrate 124 which is a lower substrate facing the first substrate 122 with respect to the respective lens regions, 126 are spaced apart from each other. However, the present invention is not limited thereto, and the plurality of second electrodes 127a and 127b may be spaced apart from each other on a single layer. At this time, the plurality of second electrodes 127a and 127b may be made of a transparent conductive material.

A first alignment layer 129 and a second alignment layer 128 are formed on inner surfaces of the first substrate 122 and the second substrate 124 having such a structure. A liquid crystal layer 123 is formed between the first substrate 122 and the second substrate 124 on which the two orientation films 128 are formed. At this time, the liquid crystal layer 123 may be made of a TN liquid crystal.

At this time, a first voltage Vmin corresponding to a substantially threshold voltage is applied to the second electrodes 127a and 127b positioned at the center of the lens region, and the second electrodes 127a and 127b positioned at the edge portions of the lens regions, The highest n-th voltage Vmax is applied. In this case, a voltage applied to the plurality of second electrodes 127a and 127b positioned between the center of the lens region and the edge portion is set to a value between the nth voltage Vmax and the threshold voltage Vmin of the lens region, A voltage having a value gradually increasing toward the center of the lens region is applied. When a ground voltage is applied to the common electrode 125 in a state where a voltage is applied to the plurality of second electrodes 127a and 127b, the plurality of second electrodes 127a and 127b, A vertical electric field is formed between the first electrode 125 and the second electrode 125.

When a voltage is applied in this manner, the voltage difference applied between the plurality of second electrodes 127a and 127b adjacent to each other becomes 1V or less, and a horizontal electric field formed between the plurality of second electrodes 127a and 127b It should not occur to a large extent.

The second electrodes 127a and 127b are electrically connected to the common electrodes 125a and 127b as a whole by applying a voltage to the plurality of second electrodes 127a and 127b gradually decreasing from the edge portion to the center of the lens region. ), And the entirety thereof has the same phase change as a convex lens having a convex semicircular or parabolic shape.

A third polarizing plate 121 is attached to the upper portion of the liquid crystal lens 120 and an adhesive layer 150 is attached to the lower portion of the liquid crystal lens 120, To adhere to the lower image panel 110.

At this time, the TN liquid crystal is used as the liquid crystal layer 123 of the liquid crystal lens 120 so that the third polarizer 121 can have a light absorption axis in a direction perpendicular to the light absorption axis of the first polarizer 111 have.

The first polarizing plate 111, the second polarizing plate 115, and the third polarizing plate 121 are respectively provided with a polarizing layer having a polarization axis for changing a polarization characteristic of light and a polarizing layer formed on both sides of the polarizing layer, A first TAC (tri-acetatecellulose) film and a second TAC film to protect and support the second TAC film.

On the other hand, in the case of a TN liquid crystal, the liquid crystal is arranged vertically in the direction of the electric field when a voltage is applied to implement black, but a light leakage occurs due to a retardation (Δnd) in a viewing angle. As a result, crosstalk occurs in the image of the stereoscopic image display device, so that the 3D image may not be clearly realized.

Accordingly, the TN viewing angle compensation layer is formed outside the first polarizer plate to improve the viewing angle light leakage, which will be described in detail in the following second and third embodiments of the present invention.

4 is a cross-sectional view schematically showing a stereoscopic image display apparatus according to a second embodiment of the present invention, in which a discotic liquid crystal (DLC) layer is inserted between an adhesive layer and a first polarizing plate The stereoscopic image display device according to the first embodiment of the present invention is substantially the same as the stereoscopic image display device according to the first embodiment of the present invention.

FIG. 5 is a cross-sectional view schematically illustrating a view angle compensation structure in a liquid crystal lens type stereoscopic image display apparatus according to a second embodiment of the present invention shown in FIG.

As shown in the figure, the stereoscopic image display apparatus according to the second embodiment of the present invention includes a liquid crystal lens 220 driven by a voltage applied thereto and having a lens function, And a light source 230 disposed below the image panel 210 and transmitting light to the image panel 210. The image panel 210 includes a light source 230,

In this case, if the image panel 210 directly emits light, the light source 230 may be omitted.

In this case, the image panel 210 may include a color filter substrate 212 and an array substrate 214. The color filter substrate 212 may be formed of a transparent material, And a liquid crystal layer 213 formed between the color filter substrate 212 and the array substrate 214.

A first polarizing plate 211 and a second polarizing plate 215 are attached to the upper and lower portions of the image panel 210, respectively.

The liquid crystal lens 220 according to the second embodiment of the present invention includes a first substrate 222 and a second substrate 224 having a plurality of lens regions defined and spaced apart from each other, And a liquid crystal layer 223 formed between the two substrates 224. At this time, the liquid crystal layer 223 may be made of a TN liquid crystal.

Although not shown in the drawing, a common electrode, that is, a first electrode made of a transparent conductive material, is formed on the entire surface of the first substrate 222 on the first substrate 222 as an upper substrate.

On the inner surface of the second substrate 224, which is a lower substrate facing the first substrate 222, a plurality of second electrodes are spaced apart from each other with the insulating layer interposed therebetween Respectively. However, the present invention is not limited thereto, and the plurality of second electrodes may be formed to be spaced apart from each other on one layer. At this time, the plurality of second electrodes may be made of a transparent conductive material.

A third polarizing plate 221 is attached to the upper portion of the liquid crystal lens 220 and an adhesive layer 250 is attached to the lower portion of the liquid crystal lens 220, To adhere to the image panel 210.

At this time, the TN liquid crystal is used as the liquid crystal layer 223 of the liquid crystal lens 220 so that the third polarizer 221 can have a light absorption axis in a direction perpendicular to the light absorption axis of the first polarizer 211 have.

The first polarizing plate 211, the second polarizing plate 215, and the third polarizing plate 221 are each formed of a polarizing layer having a polarization axis for changing the polarization characteristic of light and a polarizing layer formed on both sides of the polarizing layer, A first TAC (tri-acetatecellulose) film and a second TAC film to protect and support the second TAC film.

In particular, in the case of the second embodiment of the present invention, a DLC layer 260 for compensating the viewing angle light leakage of the liquid crystal lens 220 is additionally formed on the uppermost layer of the first polarizer 211.

That is, the first polarizing plate 211 of the second embodiment of the present invention includes a first protective layer 211-1 made of a TAC film, a polarizing film 211-2 having polyvinyl alcohol (PVA) A second protective layer 211-3 made of the TAC film, and a DLC layer 260 formed on the first protective layer 211-1.

The first protective layer 211-1 and the second protective layer 211-3 protect the polarizing film 211-2 by closely contacting the polarizing film 211-2 at the upper portion and the lower portion, It plays a role. The polarizing film 211-2 including the PVA is produced by stretching a PVA film in one direction and then adsorbing iodine or a dichroic dye. At this time, the extension axis direction becomes the absorption axis of the polarizing film 211-2.

The DLC layer 260 is formed by applying a liquid solvent containing a discotic liquid crystal molecule and a dopant for twisting the discotic liquid crystal molecules in the azimuthal direction to the first protective layer 211-1 And heat it to evaporate. At this time, as a method of applying the liquid solvent to the first protective layer 211-1, a spin coating method is suitable, and a heating temperature of about 130 DEG C is suitable.

Then tilting the discotic liquid crystal molecules by rubbing, and irradiating ultraviolet rays to link the discotic liquid crystal molecules with each other.

6 is a cross-sectional view schematically showing a stereoscopic image display apparatus of a liquid crystal lens type according to a third embodiment of the present invention, except that the DLC layer is interposed between the liquid crystal lens and the first polarizer plate. Dimensional image display apparatus according to the first embodiment and the second embodiment.

FIG. 7 is a cross-sectional view schematically illustrating a view angle compensation structure in a liquid crystal lens type stereoscopic image display apparatus according to a third embodiment of the present invention shown in FIG.

As shown in the figure, the stereoscopic image display apparatus according to the third embodiment of the present invention includes a liquid crystal lens 320 driven by a voltage applied thereto and having a lens function, And a light source 330 positioned below the image panel 310 and transmitting light to the image panel 310. The image panel 310 includes a light source 330,

In this case, if the image panel 310 directly emits light, the light source 330 may be omitted.

In this case, the image panel 310 may include a color filter substrate 312 and an array substrate 314. The color filter substrate 312 and the array substrate 314 may be made of any material, And a liquid crystal layer 313 formed between the color filter substrate 312 and the array substrate 314.

A second polarizing plate 315 is attached to the lower portion of the image panel 310.

The liquid crystal lens 320 according to the second embodiment of the present invention includes a first substrate 322, a second substrate 324, a first substrate 322, And a liquid crystal layer 323 formed between the two substrates 324. At this time, the liquid crystal layer 323 may be made of a TN liquid crystal.

Although not shown in the drawing, a common electrode, that is, a first electrode made of a transparent conductive material, is formed on the entire surface of the first substrate 322 on the first substrate 322 as an upper substrate.

On the inner surface of the second substrate 324, which is a lower substrate facing the first substrate 322, a plurality of second electrodes are spaced apart from each other with the insulating layer interposed therebetween Respectively. However, the present invention is not limited thereto, and the plurality of second electrodes may be formed to be spaced apart from each other on one layer. At this time, the plurality of second electrodes may be made of a transparent conductive material.

A third polarizing plate 321 is attached to the outside of the upper portion of the liquid crystal lens 320 and a first polarizing plate 311 including a DLC layer 360 is attached to the lower side of the liquid crystal lens 320 . In this case, the adhesive layer 350 is attached to the lower portion of the first polarizer 311 to adhere the liquid crystal lens 320 to the lower image panel 310.

At this time, the TN liquid crystal is used as the liquid crystal layer 323 of the liquid crystal lens 320, so that the third polarizing plate 321 can have a light absorption axis in a direction perpendicular to the light absorption axis of the first polarizing plate 311 have.

The first polarizing plate 311, the second polarizing plate 315, and the third polarizing plate 321 are respectively provided with a polarizing layer having a polarization axis for changing a polarization characteristic of light and a polarizing layer formed on both sides of the polarizing layer, A first TAC film that protects and supports the first TAC film, and a second TAC film that protects and supports the second TAC film.

Particularly, in the case of the third embodiment of the present invention, a DLC layer 360 for compensating the viewing angle light leakage of the liquid crystal lens 320 is further formed on the uppermost layer of the first polarizing plate 311.

That is, the first polarizing plate 311 of the third embodiment of the present invention includes a first protective layer 311-1 made of a TAC film, a polarizing film 311-2 including a PVA, And a DLC layer 360 formed on the protective layer 311-3 and the first passivation layer 311-1.

The first protective layer 311-1 and the second protective layer 311-3 protect the polarizing film 311-2 in close contact with the upper and lower portions of the polarizing film 311-2, It plays a role. The polarizing film 311-2 including the PVA is produced by stretching a PVA film in one direction and then adsorbing iodine or a dichroic dye. At this time, the extension axis direction becomes the absorption axis of the polarizing film 311-2.

The DLC layer 360 may be formed by a liquid solvent containing a dopant for twisting the discotic liquid crystal molecules and the discotic liquid crystal molecules in the azimuthal direction to the second substrate 324 of the liquid crystal lens 320 ) And heated to vaporize. At this time, as a method of applying the liquid solvent on the second substrate 324 of the liquid crystal lens 320, a spin coating method is suitable, and a heating temperature of about 130 ° C is suitable.

And then tilting the discotic liquid crystal molecules by rubbing and irradiating ultraviolet rays to link the discotic liquid crystal molecules with each other.

In the stereoscopic image display device according to the second and third embodiments of the present invention configured as described above, a DLC layer is formed outside the first polarizing plate to minimize light leakage due to the parallax barrier, thereby realizing a clear 3D image .

FIGS. 8 and 9 are photographs showing simulation results of light leakage in a black state. FIGS. 8 and 9 show simulation results when the DLC layer is not formed outside the first polarizing plate and when the DLC layer is constituted.

As shown in the figure, when the DLC layer is formed outside the first polarizer to compensate for the light leakage caused by the parallax barrier, the brightness decreases in the black display state and the light leakage in the diagonal direction does not constitute the DLC layer As shown in FIG.

While a great many are described in the foregoing description, it should be construed as an example of preferred embodiments rather than limiting the scope of the invention. Therefore, the invention should not be construed as limited to the embodiments described, but should be determined by equivalents to the appended claims and the claims.

110 to 310: Image panel 111 to 311: First polarizing plate
112 to 312: Color filter substrate 113 to 313, 123 to 323:
114 to 314: array substrate 115 to 315: second polarizer plate
120 to 320: liquid crystal lenses 121 to 321: third polarizer plate
122 to 322: first substrate 124 to 324: second substrate
150 to 350: Adhesive layer 160 to 360: Discotic liquid crystal layer

Claims (9)

A liquid crystal lens having a lens function by driving a liquid crystal layer made of TN (Twisted Nematic) liquid crystal according to a voltage application;
A video panel positioned below the liquid crystal lens and emitting two-dimensional image information;
A first polarizing plate and a second polarizing plate respectively attached to upper and lower portions of the image panel;
A third polarizer attached to an upper portion of the liquid crystal lens and having a light absorption axis in a direction perpendicular to a light absorption axis of the first polarizer; And
And a discotic liquid crystal layer (DLC) disposed outside the first polarizer plate between the liquid crystal lens and the image panel. The stereoscopic image display apparatus of claim 1, further comprising a light source positioned below the image panel and transmitting light to the image panel. The liquid crystal display device according to claim 1,
A first substrate and a second substrate having a plurality of lens regions having a plurality of partial regions defined and spaced apart from each other;
A plurality of first electrodes formed on an inner surface of the first substrate and a plurality of second electrodes formed on an inner surface of the second substrate, for each of the lens regions; And
And a liquid crystal layer made of the TN liquid crystal between the first substrate and the second substrate. delete delete delete The stereoscopic image display apparatus of claim 1, further comprising an adhesive layer provided between the liquid crystal lens and the image panel to adhere the liquid crystal lens to the image panel. The stereoscopic image display apparatus of claim 7, wherein the adhesive layer is positioned between the first polarizer and the image panel. The stereoscopic image display apparatus of claim 7, wherein the adhesive layer is positioned between the liquid crystal lens and the DLC layer.

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