KR101697591B1 - Stereoscopic 3d display device and method of driving the same - Google Patents

Abstract

In the stereoscopic image display apparatus and the driving method thereof, the parallax image is divided into n (n? 2) and the interval between views is designed to be 65 mm / n, and the parallax image is shifted according to the movement of the user A liquid crystal lens driven to apply a voltage and functioning as a lens, for enabling a natural stereoscopic image to be viewed regardless of a user's motion; And an image panel positioned at a rear surface of the liquid crystal lens and outputting first through m-th parallax images through the liquid crystal lens in the case of m-view, wherein the n parallax images are divided into n (n? 2) And the first to m-th parallax images are moved according to the movement of the user by designing the interval between view to be 65 mm / n.

Description

TECHNICAL FIELD [0001] The present invention relates to a stereoscopic image display device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image display apparatus and a driving method thereof, and more particularly, to a stereoscopic image display apparatus and a driving method thereof that can realize a natural stereoscopic image regardless of a motion of a viewer.

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.

Hereinafter, a typical parallax barrier stereoscopic image display device will be described in detail with reference to the drawings.

1 is an exemplary view schematically showing a stereoscopic image display device using a general parallax barrier system.

As shown in the figure, a stereoscopic image display apparatus using a general parallax barrier system includes an image panel 40 for simultaneously displaying images for left and right eyes, and a display panel 40 for displaying images on the front And arranged barrier cells 20.

In this case, the image panel 40 includes a left eye pixel L for displaying an image for the left eye and a right eye pixel R for displaying an image for the right eye, 40 and the users 30a, 30b.

The barrier cell 20 has a slit 22 formed between the narrow barrier 21 called a pararex barrier so that the left and right eye images are simultaneously displayed through the barrier cell 20.

The left eye image displayed on the left eye pixel L of the image panel 40 reaches the left eye of the user 30a via the slit 22 of the barrier cell 20, The right eye image displayed on the right eye pixel R reaches the right eye of the user 30a via the slit 22 of the barrier cell 20. At this time, ), And the user 30a combines the two images to recognize the three-dimensional image.

That is, when the user 30a is positioned at the normal position, the left eye image and the right eye image are input to the left eye and right eye of the user 30a, respectively. In this case, So that the user 30a can enjoy the three-dimensional image. In this case, it is assumed that the user 30a is located in the stereoscopic viewing area.

However, if the user 30b is moved from the normal position to the right or to the left so that the position is shifted in the stereoscopic viewing area, the left eye image and the right eye image to be respectively entered into the left eye and right eye of the user 30b It is blocked by the barrier 21 of the parallax cell 20 and 3D implementation becomes impossible. In this case, it is assumed that the user 30b is located in the inverse stereoscopic area.

Using the parallax barrier method has the advantage of viewing three-dimensional images without wearing glasses. However, it is impossible to switch between 2D and 3D, and in general, images for two eyes, that is, two- There is a disadvantage that the viewpoint can not be moved freely.

Thus, the 2-view stereoscopic image display device has a disadvantage that the 3D viewing area is very narrow. Since the interval between views is 65 mm, image flipping occurs when the user moves.

In order to overcome this problem, it is possible to combine eye tracking technology. In the method of moving the image to the stereoscopic image area, it is necessary to modify the driving circuit for changing the image signal, There is a disadvantage that 3D astigmatism phenomenon occurs. In addition, when the user moves, natural image conversion is difficult.

In the method of moving the position of the parallax barrier or the lens to convert to the stereoscopic image, there is a limitation in applying to a passive type barrier or lens. In the case of the parallax barrier, the brightness is lowered due to the barrier. In the case of the liquid crystal lens, since the liquid crystal response speed is slow, it is difficult to move the lens fast.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stereoscopic image display device and a method of driving the stereoscopic image display device that realize both a 2D mode and a 3D mode using a liquid crystal lens.

Another object of the present invention is to provide a stereoscopic image display device and a method of driving the stereoscopic image display device, which enable realization of a stereoscopic image regardless of a user's motion.

Another object of the present invention is to provide a stereoscopic image display device and a driving method thereof that provide a more natural image without image flipping due to image movement when the eye tracking technology is applied.

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 voltage applied thereto to function as a lens, and a liquid crystal lens disposed on a rear surface of the liquid crystal lens, (M < 2 >) of the m parallax images are divided into n (n > = 2) Is designed to be 65 mm / n, and the first to mth parallax images are moved according to the movement of the user.

Here, the image panel may be one of a liquid crystal display, an organic light emitting display, an electroluminescent display, a plasma display, and an electroluminescent display.

A control unit for controlling the liquid crystal lens and the image panel, and an observation device for reading the movement of the user and transmitting the information to the control unit.

A method of driving a stereoscopic image display device includes driving a stereoscopic image display device including an image panel emitting a parallax image, and a liquid crystal lens disposed between the image panel and a user, (M < / RTI > < RTI ID = 0.0 > 2) < / RTI & And the first to m-th parallax images are moved according to the movement of the user by designing the interval of the view after dividing each of the images into n (n = 65 mm / n).

At this time, one view set is composed of n pairs of first to mth parallax images, and n first parallax images, ..., n m parallax images are arranged in that order.

And the image panel is characterized in that the mth to the first image pixels that respectively represent the first to mth parallax images are repeatedly arranged.

If a set of first to m-th image pixels corresponding to the one view set is defined as a unit pixel, the unit pixels are divided into a pair of first to m-th image pixels by n pairs of first to m- As shown in FIG.

The unit pixels are arranged in order of n first m image pixels, ..., n first image pixels.

And a virtual lens surface of the liquid crystal lens has a pitch substantially equal to a length of n pairs of first to mth image pixels corresponding to the one view set.

When the user moves from the normal position to the left or right and the position is changed in the stereoscopic viewing area, the first through m-th parallax images are moved according to the movement of the user.

As described above, the stereoscopic image display apparatus and the driving method thereof according to the present invention have the following effects.

First, the 2D mode and the 3D mode can be freely switched and used by using the liquid crystal lens, thereby meeting the various needs of the consumer, and the 3D luminance is improved compared with the existing parallax barrier system.

Second, when 2-view 3D is implemented, the stereoscopic vision area and the inverse stereoscopic vision area are 1: 1, and the region where the stereoscopic image can be seen is very narrow. On the other hand, according to the present invention, even when the multi-view 3D is implemented, the parallax images are divided into n (n? 2) and the interval between the views is designed to be 65 mm / n, It is possible to realize a stereoscopic image natural regardless of the motion of the user.

Third, the image flipping phenomenon due to the image movement using the eye tracking technology is eliminated, and the non-stereoscopic region is removed.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a stereoscopic image display apparatus according to a general parallax barrier system; Fig.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a stereoscopic image display apparatus.
3 is a diagram exemplifying the principle of a multi-view image display apparatus.
4A and 4B illustrate a driving method of a stereoscopic image display apparatus according to a first embodiment of the present invention.
5A and 5B illustrate a driving method of a stereoscopic image display apparatus according to a second embodiment of the present invention.
6A and 6B illustrate a method of driving a stereoscopic image display apparatus according to a third embodiment of the present invention.
7A and 7B illustrate a method of driving a stereoscopic image display apparatus according to a fourth embodiment of the present invention.

Hereinafter, preferred embodiments of a stereoscopic image display apparatus and a driving method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

In a stereoscopic image display device using a binocular parallax, there is a liquid crystal lens, that is, a liquid crystal lens electrically driven system in which a liquid crystal layer functions as a lens by using characteristics of liquid crystal molecules.

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.

2 is a schematic view illustrating a configuration of a stereoscopic image display apparatus according to an exemplary embodiment of the present invention, and shows a stereoscopic image display apparatus using the liquid crystal lens as a parallax barrier.

Here, the stereoscopic image display apparatus according to the embodiment of the present invention shows a case where the eye tracking technique is combined with the image moving method.

As shown in the drawing, the stereoscopic image display apparatus according to an embodiment of the present invention includes a liquid crystal lens 120 driven by voltage application and having a lens function, a liquid crystal lens 120 disposed on the rear surface of the liquid crystal lens 120, And a light source (not shown) positioned at the rear of the image panel 140 and transmitting light to the image panel 140. [

In addition, the stereoscopic image display apparatus according to an embodiment of the present invention includes a control unit 160 for controlling the liquid crystal lens 120 and the image panel 140, and a control unit 160 for reading the movement of the user 130, (150) to the observation device (160).

At this time, if the image panel 140 is a device for directly emitting light according to circumstances, the light source can be omitted.

The liquid crystal lens 120 according to the embodiment of the present invention has a function of outputting a two-dimensional image signal as a three-dimensional image signal as a profile of a lens surface, and the image panel 140 ), And selectively outputs 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.

Although not shown in detail in the drawings, the liquid crystal lens 120 according to the embodiment of the present invention includes a first substrate and a second substrate which are defined by a plurality of lens regions and are spaced apart from each other, And a liquid crystal layer formed between the two substrates.

In addition, in the image panel 140 according to the embodiment of the present invention, for example, when driving with a 2-view, first and second image pixels respectively displaying first and second images are sequentially And the like. The image panel 140 may be a liquid crystal display (LCD), an organic light emitting display (OLED), a field emission display A plasma display panel (PDP), and an electroluminescent display (EL) may be used.

For example, the controller 160 is electrically connected to the observation device 150 to determine how far the user 130 is from the normal position, receives the corresponding movement information, Eye tracking can be implemented by controlling a signal applied to the image panel 140 so that the image is moved according to the movement of the user 130.

At this time, the observation device 150 tracks in real time the motion of the pupil of the user 130 or the head of the user 130, and calculates the motion of the pupil or head of the tracked user 130 And converts the motion into movement information, and transmits the motion information to the controller 160.

On the other hand, the eyeglass-type 3D is a method in which the left eye image and the right eye image come into the left eye and the right eye, respectively. That is, the image panel diverges the left eye image and the right eye image in all directions, and separates the left eye image and the right eye image through glasses.

In the non-eyeglass system, if only one user is in a fixed position, the user can see the same shape as the above-described glasses system. In the same way as wearing glasses, the left and right eye images can be sent to the left and right eyes of the user respectively . However, this is typically used in personal displays such as monitors or cell phones, and may not be visible in 3D depending on location.

However, it is impossible to artificially separate the left eye image and the right eye image from a plurality of persons, or a moving 3D image. So I make a view from the pointless glasses. That is, two images of the left eye image and the right eye image are combined to form n views.

3 is a diagram exemplifying the principle of a multi-view image display apparatus.

Referring to FIG. 3, for example, when the user 130 looks at V1 in the left eye and V2 in the right eye, the image seen from the left becomes relatively vivid and moves to the right to move V6 in the left eye and V7 in the right eye. When you are in position, the image you see on the right side will feel relatively vivid.

At this time, the view 1 to 8 feel normal 3D, but when the set of the view is changed, V8 is left in the left eye and 3D is not felt at the time of receiving V1 in the right eye.

For reference, the simplest binocular (2-view) image is set at a certain point and the image panel and the parallax barrier are arranged so that different images can be seen in the left eye and right eye at that position. In the image panel, two perspective projected images, each having a projection center at the left eye and at the right eye, are vertically arranged for each pixel column of the image panel and arranged alternately. This is relatively easy to realize, but it can be seen that the visual area is very narrow because it can not be viewed in three dimensions except for the fixed position, and that when viewed from the position shifted by the right and left eye distances, the inverse stereoscopic image, There is a drawback that it becomes a strange screen as shown.

The multi-viewpoint increases the number of parallaxes to about 4 to 8, thereby increasing the position normally seen. In other words, when the viewing parallax, that is, the viewing angle of the observer moving in the lateral direction is changed, the stereoscopic image display apparatus 100 can also view images from different angles.

 Normally, the size of one view is made to be 65mm, which is the universal left and right eye distance of a person. The larger the view, the wider the 3D viewing angle, but the lower the resolution.

As described above, when tracking the movement of the user by setting the interval between view to 65mm, image spacing is 65mm in the case of the image movement method, resulting in image flipping phenomenon at the time of image replacement.

In the case of the present invention, when 2-view and multi-view 3D are implemented by the tracking technique, the parallax images are divided into n (n? 2) and the parallax interval is set to 65 mm / So that it is possible to realize a natural stereoscopic image irrespective of the motion of the user, which will be described in detail with reference to the drawings.

At this time, as n becomes larger, a more natural image can be provided.

FIGS. 4A and 4B illustrate a driving method of a stereoscopic image display apparatus according to a first embodiment of the present invention. FIG. 4A and FIG. 4B illustrate a case in which an eye tracking technique is combined with an image moving method.

4A and 4B illustrate a driving method in the case of dividing an existing parallax image into n (= 2) and designing the interval between views to be 65 mm / 2 in the 2-view.

4A, when the user is in the normal position, the first and second parallax images 1 and 2 are displayed on the video panel 140 according to the first embodiment of the present invention. 2 and the first image pixels V2 and V1 are repeatedly arranged.

At this time, one view set S is composed of two pairs of first and second parallax images 1 and 2. It is preferable that a pair of first and second parallax images 1 and 2 are alternately arranged For example, two first parallax images 1 and two second parallax images 2 in this order.

The first and second image pixels V1 and V2 correspond to two image pixels V2 and two first image pixels V1 in the image panel 140, Respectively. In this case, if a set of first and second image pixels corresponding to one view set is defined as a unit pixel, the unit pixel 145 according to the first exemplary embodiment of the present invention is a unit pixel It can be seen that a pair of first and second image pixels are divided into two pairs of first and second image pixels V1 and V2. The arrangement is made in the order of the two second image pixels V2 and the two first image pixels V1 as described above.

At this time, the virtual lens surface 125 of the liquid crystal lens (not shown) has a pitch substantially equal to the length of the two pairs of first and second image pixels V1 and V2 corresponding to one view set S Respectively.

In this case, the inter-view distance P1 is designed to be 65 mm / n, that is, 32.5 mm as one existing parallax image is divided into n (= 2).

On the other hand, when the user moves from the normal position to, for example, the right side and the position is changed in the stereoscopic viewing area, as shown in FIG. 4B, the first and second parallax images 1, 2), it is possible to eliminate the backward stereoscopic vision and enlarge the viewing area.

Also, even when the user is located in the non-stereoscopic region existing between the first parallax image and the second parallax image as in the prior art, since one first and second parallax images are divided into two, a natural three- I can see it.

Further, when a liquid crystal lens is used, there is an advantage in that luminance drop is small when 3D is realized, compared with a parallax barrier.

At this time, the movement of the first and second parallax images 1 and 2 is performed by moving the first and second image pixels V1 and V2 arranged in the image panel 140 substantially.

5A and 5B illustrate a driving method of a stereoscopic image display apparatus according to a second embodiment of the present invention. In the two-view method, an existing parallax image is divided into n (= 3) Is designed to be 65 mm / 3, the driving method is shown as an example.

5A, when the user is in the normal position, the first and second parallax images 1 and 2 are displayed on the video panel 240 according to the second embodiment of the present invention. 2 and the first image pixels V2 and V1 are repeatedly arranged.

At this time, one view set S is composed of three pairs of first and second parallax images 1 and 2. It is preferable that a pair of first and second parallax images 1 and 2 are alternately arranged For example, three first parallax images (1) and three second parallax images (2).

In response to this, the image panel 240 also includes three pairs of first and second image pixels V1 and V2, for example, three second image pixels V2 and three first image pixels V1, Respectively. In this case, if a set of the first and second image pixels corresponding to one view set is defined as a unit pixel, the unit pixel 245 according to the second embodiment of the present invention may have a pair of pixels 1 and the second image pixel are divided into three pairs of first and second image pixels V1 and V2. The arrangement is made in the order of the three second image pixels V2 and the three first image pixels V1 as described above.

At this time, the virtual lens surface 225 of the liquid crystal lens (not shown) has a pitch substantially equal to the length of the three pairs of first and second image pixels V1 and V2 corresponding to one view set S Respectively.

In this case, the inter-view distance P2 is designed to be 65 mm / 3 and approximately 21.6 mm as one existing parallax image is divided into n (= 3).

On the other hand, when the user moves from the normal position to the right, for example, and the position is changed in the stereoscopic viewing area, as shown in FIG. 5B, the first and second parallax images 1, 2), it is possible to eliminate the backward stereoscopic vision and enlarge the viewing area.

Also, even when the user is located in the non-stereoscopic region existing between the first parallax image and the second parallax image as in the conventional art, since one first and second parallax images are divided into three, a natural three- I can see it.

At this time, the movement of the first and second parallax images 1 and 2 is performed by moving the first and second image pixels V1 and V2 arranged in the image panel 240 substantially.

In this case, the method of driving the stereoscopic image display device according to the first and second embodiments of the present invention has a two-view method in which an existing one parallax image is divided into two or three parallax images However, the present invention is not limited thereto. The present invention can be applied to a case where one parallax image is divided into four or more, and as n becomes larger, a more natural image can be provided.

In addition, although the first and second embodiments of the present invention have been described by way of example with reference to a method of driving a stereoscopic image display device in the case of a two-view display, the present invention is not limited thereto, It is possible to provide more natural video viewing without changing the margins of the viewing area.

6A and 6B illustrate a driving method of a stereoscopic image display apparatus according to a third embodiment of the present invention. In the four-view method, an existing parallax image is divided into n (= 2) Is designed to be 65 mm / 2, a driving method is shown as an example.

6A, when the user is in the normal position, the first, second, third, and fourth parallax images 1, 2 (1, 2) are displayed on the video panel 340 according to the third exemplary embodiment of the present invention. Third, and third image pixels V4, V3, V2, and V1 that respectively represent the first, second, third, and fourth image pixels are repeatedly arranged.

At this time, one view set S is composed of two pairs of first, second, third and fourth parallax images 1, 2, 3 and 4, and a pair of first, For example, two first parallax images 1, two second parallax images 2, and two third parallax images 1, 2, 3, The image 3 and the two fourth parallax images 4 in that order.

In response to this, two pairs of first, second, third, and fourth image pixels V1, V2, V3, and V4 are also included in the image panel 340, for example, , Two third image pixels (V3), two second image pixels (V2), and two first image pixels (V1). If a set of first, second, third, and fourth image pixels corresponding to one view set is defined as a unit pixel, the unit pixel 345 according to the third exemplary embodiment of the present invention is a unit pixel, The first, second, third, and fourth image pixels are divided into two pairs of first, second, third, and fourth image pixels (V1, V2, V3, V4) . The arrangement of the first image pixel V1 and the second image pixel V2 is the same as that of the first image pixel V1 and the second image pixel V2, .

At this time, the virtual lens surface 325 of the liquid crystal lens (not shown) is divided into two pairs of first, second, third and fourth image pixels V1, V2, V3, V4) of the first and second electrodes.

In this case, the inter-view distance P3 is designed to be 65 mm / n, that is, 32.5 mm as one existing parallax image is divided into n (= 2).

On the other hand, when the user moves from the normal position to the right side and the position is changed in the stereoscopic viewing area, as shown in FIG. 6B, the first, second, and third And 4th parallax images (1, 2, 3, 4) are moved, the reverse stereoscopic vision can be eliminated and the viewing area is enlarged.

In addition, as in the prior art, a non-stereoscopic image existing between a first parallax image and a second parallax image, a second parallax image and a third parallax image, a third parallax image and a fourth parallax image or a fourth parallax image and a first parallax image, Even if the user is located in the viewing area, a natural three-dimensional image can be seen as one first, second, third, and fourth parallax images are divided into two.

At this time, the movement of the first, second, third and fourth parallax images 1, 2, 3 and 4 is performed by moving the first, second, third and fourth images And the pixels V1, V2, V3, and V4.

7A and 7B illustrate a method of driving a stereoscopic image display device according to a fourth embodiment of the present invention. In the 4-view method, an existing parallax image is divided into n (= 3) Is designed to be 65 mm / 3, the driving method is shown as an example.

7A, when the user is in the normal position, the first, second, third, and fourth parallax images 1, 2 (1, 2) are displayed on the video panel 440 according to the fourth embodiment of the present invention. Third, and third image pixels V4, V3, V2, and V1 that respectively represent the first, second, third, and fourth image pixels are repeatedly arranged.

At this time, one view set S is made up of three pairs of first, second, third and fourth parallax images 1, 2, 3, 4, and a pair of first, For example, three first parallax images 1, three second parallax images 2, and three third parallax images 1, 2, 3, Image 3 and three fourth parallax images 4 in that order.

In response to this, three pairs of first, second, third and fourth image pixels V1, V2, V3 and V4 are also arranged in the image panel 440, for example, three fourth image pixels V4, , Three third image pixels (V3), three second image pixels (V2), and three first image pixels (V1). In this case, if a set of first, second, third, and fourth image pixels corresponding to one view set is defined as a unit pixel, the unit pixel 445 according to the fourth embodiment of the present invention is a unit The first, second, third, and fourth image pixels are divided into three pairs of first, second, third, and fourth image pixels (V1, V2, V3, V4) . The arrangement is the same as the order of the three fourth image pixels V4, the three third image pixels V3, the three second image pixels V2, and the three first image pixels V1, .

At this time, the imaginary lens surface 425 of the liquid crystal lens (not shown) is divided into three pairs of first, second, third and fourth image pixels V1, V2, V3, V4) of the first and second electrodes.

In this case, the inter-view distance P4 is designed to be 65 mm / 3 and approximately 21.6 mm as one existing parallax image is divided into n (= 3).

On the other hand, when the user moves from the normal position to the right side and the position is changed in the stereoscopic viewing area, as shown in FIG. 7B, the first, second, and third And 4th parallax images (1, 2, 3, 4) are moved, the reverse stereoscopic vision can be eliminated and the viewing area is enlarged.

In addition, as in the prior art, a non-stereoscopic image existing between a first parallax image and a second parallax image, a second parallax image and a third parallax image, a third parallax image and a fourth parallax image or a fourth parallax image and a first parallax image, Even when the user is located in the viewing area, a natural three-dimensional image can be seen as one first, second, third, and fourth parallax images are divided into three.

At this time, the movement of the first, second, third and fourth parallax images 1, 2, 3 and 4 is performed by moving the first, second, third and fourth images And the pixels V1, V2, V3, and V4.

In this case, the method of driving the stereoscopic image display device according to the third and fourth embodiments of the present invention is a 4-view method, and a case where an existing one parallax image is divided into two or three is described as an example However, the present invention is not limited thereto. The present invention can be applied to a case where one parallax image is divided into four or more, and as n becomes larger, a more natural image can be provided.

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.

120: liquid crystal lenses 125, 225, 325, 425:
140, 240, 340, 440: image panel 145, 245,
V1, V2, V3, V4: image pixels

Claims (10)

A liquid crystal lens driven by a voltage applied to function as a lens; And
And an image panel positioned at a back surface of the liquid crystal lens and emitting first through mth parallax images through the liquid crystal lens in the case of m-view,
Each of the m parallax images is divided into n (n? 2), and the interval between the views (the interval of the view after dividing each of the m parallax images into n) is designed to be 65 mm / n, 1 to m-th parallax images. The stereoscopic image display apparatus of claim 1, wherein the image panel is one of a liquid crystal display, an organic light emitting display, an electroluminescent display, a plasma display, and an electroluminescent display. The apparatus of claim 1, further comprising: a controller for controlling the liquid crystal lens and the image panel; And
And an observation device for reading the movement of the user and transmitting information on the movement to the control unit. A method of driving a stereoscopic image display device including a video panel emitting a parallax image, and a liquid crystal lens disposed between the video panel and a user, the liquid crystal lens being driven according to a voltage applied thereto,
(m < 2 >) through the liquid crystal lens, and divides each of the m parallax images into n (n > = 2) Wherein the first to m-th parallax images are shifted in accordance with a movement of a user by designing the distance between the first and the second parallax images to be 65 mm / n. [5] The method of claim 4, wherein one view set includes n first parallax images, n first parallax images, ..., n first parallax images, A method of driving a display device. 6. The method of claim 5, wherein the image panel is repeatedly arranged with m-th image pixels to display the first to m-th parallax images. The apparatus of claim 6, wherein, when a set of the first through m-th image pixels corresponding to the one view set is defined as a unit pixel, the unit pixel includes a pair of first through m- 1 to m-th image pixels. 8. The method of claim 7, wherein the unit pixels are arranged in the order of n m-th image pixels, ..., n first image pixels. The driving method of a stereoscopic image display apparatus according to claim 6, wherein a virtual lens surface of the liquid crystal lens has a pitch substantially equal to a length of n pairs of the first to mth image pixels corresponding to the one view set . 5. The stereoscopic image display device according to claim 4, wherein when the user moves from the normal position to the left or right and the position is changed in the stereoscopic viewing area, A method of driving a display device.

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