KR100910969B1 - A Method for Displaying Three-Dimensional Images and An Apparatus for the Same - Google Patents

Abstract

The present invention relates to a stereoscopic image display method and a stereoscopic image display device for the method, and more particularly, to a stereoscopic image display method and method that can improve the resolution by using an LCD shutter (shutter) switchable in n forms It relates to a device for application. According to an aspect of the present invention, there is provided a stereoscopic image display device comprising: a stereoscopic image switching module for sampling and multiplexing image information from n number of parallax image frames for each direction according to n type stereoscopic image sampling patterns; An LCD shutter device comprising a switchable LCD shutter comprising a plurality of switching unit elements that can be switched from transparent to opaque or vice versa and an ON / OFF control device; And a flat panel display device that sequentially receives image information from the stereoscopic image switching module via the LCD shutter. The image information may be sequentially displayed through the LCD shutter according to a stereoscopic image sampling pattern.

Sampling, multiplexing, lenticular lens, parallax method, LCD shutter

Description

A method for displaying three-dimensional images and an apparatus for the same}             

1A illustrates an example in which a vertical axis of the lens is parallel to a vertical axis of a flat panel display device as an example of a stereoscopic display method using a lenticular lens, which is a known stereoscopic display device.

 FIG. 1B illustrates an example in which a longitudinal axis of the lens forms an inclination angle with respect to a vertical axis of a flat panel display device as an example of a stereoscopic display method using a lenticular lens, which is a known stereoscopic display device.

FIG. 2 illustrates a known Parallax scheme using a Slit Array Sheet in which rectangular transmission regions are arranged.

FIG. 3A illustrates an embodiment of a reduction in resolution that may occur in the case of a stereoscopic method using a lenticular lens plate 11 having a vertical axis formed by four directional parallax images.

FIG. 3B illustrates an embodiment in which a resolution is reduced when a stereoscopic image is implemented using a lenticular plate inclined with seven directional parallax images.

FIG. 3C illustrates a method of implementing a stereoscopic image as eight directional parallax images in a known stereoscopic image display apparatus.

4 illustrates an embodiment of a stereoscopic image display device according to the present invention.

FIG. 5 illustrates a stereoscopic image sampling pattern and a switchable LCD pattern for each type in five parallax imaging methods.

6 illustrates a process of displaying a stereoscopic image in the stereoscopic image display apparatus according to the present invention.

FIG. 7 illustrates a separation form of parallax images for each direction when a parallax stereoscopic method is used in an embodiment of a stereoscopic image display device according to the present invention.

8 illustrates a configuration and operation principle of an n-type switchable LCD shutter device of the stereoscopic image display device according to the present invention.

9 illustrates a principle of improving resolution perceived by an observer in a stereoscopic display device using a switchable LCD shutter according to the present invention.

The present invention relates to a stereoscopic image display method and a stereoscopic image display device for the method, and more particularly, to a stereoscopic image display method and method that can improve the resolution by using an LCD shutter (shutter) switchable in n forms It relates to a device for application.                         

In recent years, as the demand for a stereoscopic image display device for expressing an image having a realism and close to a real sense increases, development of a display apparatus capable of representing a stereoscopic image has been rapidly developed.

In general, stereoscopic images allow different images to be sensed by the viewer's left and right eyes so that the viewer recognizes the images as stereoscopic images as the left and right images recognized by the observer are synthesized in the human brain. Therefore, in order to be recognized as a stereoscopic image, a device capable of displaying different images in the left and right eyes is required, and examples of the apparatus are holograms and stereoscopic glasses. The hologram refers to a three-dimensional image display method that has been enabled by the development of laser technology as a three-dimensional image produced by a photo projection technique. The hologram does not require to be perceived as a three-dimensional effect but actually requires a special device for recognizing the generated three-dimensional image by generating the three-dimensional image in three-dimensional space. In contrast, the three-dimensional glasses separates the left eye image and the right eye image so that the left and right eyes are separately recognized so that the stereoscopic image is recognized as a stereoscopic image. The hologram method requires a technical development in order to generally view a stereoscopic image, and the stereoscopic glasses have a disadvantage in that they can be recognized as stereoscopic images only when the user wears the glasses. In order to compensate for the above drawbacks, a device for recognizing a stereoscopic image without wearing glasses has been recently developed. The apparatus mainly uses a method of implementing a three-dimensional system by combining a device for separating the direction-specific image to a flat panel display device such as LCD or PDP. Such a three-dimensional system includes a lenticular method using a lenticular lens sheet, a parallax method using a slit array sheet, and a microlens array sheet according to a device for separating images for each direction. It can be classified into a variety of autostereoscopy (autostereoscopy) method such as the integrated photography method using the holographic method using the interference phenomenon. Each of the proposed methods has its own advantages and disadvantages, but in particular, the integrated photography method and the holography method can realize parallax in all directions including horizontal, unlike other methods of realizing stereoscopic by only horizontal parallax. Make sure However, the method is difficult to realize due to the large amount of data to be processed, and it is difficult to realize at the current level of technology, and due to various unsolved technical problems as a method to be developed with the development of data processing speed. The lenticular method using the lenticular plate among the above methods is illustrated in FIGS. 1A and 1B. FIG. 1A illustrates a known embodiment in which the longitudinal axis of the lenticular lens is parallel to the vertical axis of the flat panel display device, and FIG. 1B illustrates a manner in which the longitudinal axis of the lenticular lens is inclined at a specific angle with respect to the vertical axis of the flat panel display device. It is shown.

As shown in FIG. 1A, the lenticular lens axis LY, which is a separate axis of left and right eyes, is installed on the front surface of the flat panel display element 10 such that the lenticular lens plate 11 is parallel to the longitudinal axis of the lenticular lens plate 11. do. The flat panel display device 10 is divided into two vertical zones on both sides of the lens axis LY, and different image information is displayed at a time difference. The image information displayed in each of the regions is recognized by the observer V at two intervals, respectively, on both sides of the gaze reference line R as the constant parallax. That is, four image information are recognized by the observer with a time difference. Thus, by using the lenticular lens plate 11 having an axis in the vertical direction, four disparity images for each direction are displayed to allow the viewer V to recognize the stereoscopic image.

FIG. 1B illustrates an example in which the lenticular lens axis LY is inclined by a predetermined angle α with respect to the vertical axis of the flat panel display device, unlike the known embodiment shown in FIG. 1A. As illustrated in FIG. 1B, the flat panel display element 10 is divided into seven regions and transmits necessary image information to the observer V at a time difference through the inclined lenticular lens plate 11a. The observer V recognizes three pieces of image information with three parallaxes on each of the left and right eyes with respect to the reference line R, thereby forming a stereoscopic image.

A known embodiment using the lenticular lens plate shown in FIGS. 1A and 1B is difficult to manufacture a lens plate, and crosstalk in which images are mixed without directional parallax images being precisely separated from each other due to aberration of the lenticular lens. (Crosstolk) has the disadvantage that can occur.

In order to solve the above problems, a Parallax method using a slit array sheet (Slit Array Sheet) in which a rectangular transmissive region as shown in FIG. 2 is arranged has been proposed. In the Parallax method, a rectangular slit array plate 20 including an opaque region 201 and a transparent region 203 is provided on the front surface of the flat panel display device 10. The stereoscopic image is prepared by sampling and multiplexing periodically after preparing two or more Perspective Differential Perspective Images. In such a case, the stereoscopic space that can be recognized can be widened when using as many parallax images for each direction as possible. However, since the number of elements for displaying a 2D flat panel for displaying an image is fixed, the resolution of the stereoscopic image is reduced in inverse proportion to the number of parallax images for each direction. Therefore, the number of parallax images for each direction used is appropriately balanced in consideration of the resolution (number of pixels) of the flat panel element. As shown in FIG. 3A, the resolution is reduced due to the number of parallax images for each direction.

FIG. 3A illustrates an embodiment of a reduction in resolution that may occur in the case of a stereoscopic method using a lenticular lens plate 11 having a vertical axis formed by four directional parallax images. In the case of the proposed method, the higher the number of pixels corresponding to the lenticular lens plate, the higher the vertical resolution. In the case of using four directional parallax images, the resolution in the vertical direction is maintained but the resolution in the horizontal direction is significantly reduced to 1/4. In the case of the schemes illustrated in FIGS. 1A and 3A, since the resolution is reduced to 1/4 because four directions of parallax images are used, the resolution in the horizontal direction is 1 / n (n) when using the n directions of parallax images. : Number of parallax images for each direction). 3A illustrates a position 301 of a green pixel in a parallax image for each second direction. As described above, when the direction-specific parallax image is used, the resolution is reduced due to the distance between the green pixel in the first image and the green pixel in the second image, and the same for pixels of different colors. Therefore, the resolution decreases in the horizontal direction as a whole. Similarly, when a stereoscopic image is implemented using a lenticular plate inclined with seven directional parallax images, a decrease in resolution occurs, which is illustrated in FIG. 3B. As shown in FIG. 3B, when the image information displayed on the flat panel display device 10 realizes a stereoscopic image as a parallax image for each direction, the green position 301 of the parallax image for each second direction is examined in the horizontal and vertical directions. It can be seen that the resolution in the horizontal direction is considerably improved compared to the known inventions shown in FIGS. 1 and 4.

In order to improve the shortcomings of the lenticular method, the proposed parallax method also reduces the resolution. Figure 3c shows a reduction in resolution that can occur in the parallax method. In the exemplary embodiment of the present invention shown in FIG. 3C, a method of implementing a stereoscopic image as eight disparity images for each direction is illustrated. As described above, in the parallax method, the rectangular slit array plate 20 includes a transparent area 203 and an opaque area 201. In FIG. 3A, the green pixel of the parallax image for each second direction is indicated by a large circle. . Although the decrease in horizontal resolution appears scattered, it can be seen that the decrease in resolution still occurs in the parallax method.

As described above, a known method of displaying a stereoscopic image on a flat panel display such as a flat panel LCD or a PDP is difficult to manufacture a lens or a device, or a system for realizing a stereoscopic image without wearing special stereoscopic glasses. The disadvantage is that the resolution is reduced due to the parallax image.

The present invention is to solve the problems of the conventional stereoscopic image implementation system as described above has the following object.

An object of the present invention is to provide a display method of a stereoscopic image that can implement a stereoscopic image with improved resolution. Another object of the present invention is to provide a stereoscopic image display device including a switchable LCD shutter.

According to a preferred embodiment of the present invention for achieving the object of the present invention, the stereoscopic image display method comprising the steps of determining the n number of parallax image frame for each direction and sampling and multiplexing according to the n type stereoscopic image sampling pattern; generating n synthesized stereoscopic image frames for each type; Sequentially transmitting the stereoscopic image frame to the flat panel display device; And switching the LCD shutter which is switchable according to the type-specific stereoscopic image frame to the corresponding type.

According to another suitable embodiment of the present invention, the sequential transmission may be made by a stereoscopic image switching module, the switching of the LCD shutter may be synchronized with the type of stereoscopic image, or the LCD shutter is a transparent and opaque switching unit It can contain a group of elements.

According to another suitable embodiment of the present invention, the unit elements of the transparent and opaque switching unit element group may be formed in a two-dimensional array, or the LCD shutter is located at a constant distance d in front of the flat panel display element, The constant distance d may be determined by the size of the projection image in which one projection image for each direction is projected at the optimum stereoscopic observation distance.

According to still another preferred embodiment of the present invention, a stereoscopic image display device includes: a stereoscopic image switching module for sampling and multiplexing image information according to n type stereoscopic image sampling patterns from n direction parallax image frames; An LCD shutter device comprising a switchable LCD shutter comprising a plurality of switching unit elements that can be switched from transparent to opaque or vice versa and an ON / OFF control device; And a flat panel display device that sequentially receives image information from the stereoscopic image switching module via the LCD shutter. The image information may be sequentially displayed through the LCD shutter according to a stereoscopic image sampling pattern.

According to another suitable embodiment of the present invention, the plurality of switching unit elements may be divided into a transparent group and an opaque group, or the transparent group and the opaque group are switched to transparent or opaque by an ON / OFF signal switching device. Can be.

According to another suitable embodiment of the present invention, the transparent or opaque switching of the LDC shutter may be synchronized with the reception of the n-type stereoscopic image sampling patterns of the image display element.

According to another suitable embodiment of the present invention, the LCD shutter includes n groups divided according to the n-type stereoscopic image sampling, and the n groups may be sequentially switched to the transparent state.                     

According to another suitable embodiment of the present invention, the LCD shutter is located at a constant distance d in front of the flat panel display element, and the constant distance d is the size of the projected image in which the projection image for one direction is projected at the optimum stereoscopic observation distance. Or the constant distance d may be less than the distance of both eyes of the observer.

According to another suitable embodiment of the present invention, the n may be 5 or the LCD shutter may operate in a parallax manner.

According to another suitable embodiment of the present invention, the flat panel display element may be an LCD panel, a PDP display panel or an LCoS panel.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings by way of example. The examples presented are exemplary and are not intended to limit the scope of the invention.

The stereoscopic image display method according to the present invention can be applied to both a lenticular method or a parallax method. In addition, it can be implemented even in a form that does not follow the above method. Therefore, in the following description of the present invention, it is intended that it is presented in a particular manner, which is illustrative and should not be construed as limited to the manner presented in the present invention.

4 illustrates an embodiment of a stereoscopic image display device according to the present invention.

In the embodiment illustrated in FIG. 4, five directional parallax images are used. The number of parallax images in each direction can be increased or decreased. Generally, when the number of parallax images in each direction increases, the stereoscopic space increases, but the resolution decreases in inverse proportion to the number of parallax images. do. For example, in the case where stereoscopic feeling is more important, the number of parallax images for each direction may be increased in spite of a decrease in resolution, but if precise expression is required, the number of parallax images may be reduced.

In order to implement a stereoscopic display device according to the present invention, a stereoscopic image for each type must be generated by sampling and multiplexing according to n types of sampling patterns from n directional parallax images. In the exemplary embodiment shown in FIG. 4, image information is sampled and multiplexed according to n types of three-dimensional image sampling patterns from five directional parallax images such as 1, 2, 3, 4, and 5, and stereoscopic images according to types and directions. Shown is a stereoscopic image display device implemented by generating a. In general, multiplexing refers to an information processing method of simultaneously transmitting multiple signals or information streams in the form of a single complex signal, and reconstructing the corresponding signals separately on the receiving side. In general, multiplexing includes frequency division multiplexing (FDM), time division multiplexing, and optical time division multiplexing (OTDM). In the case of a digital TV, an orthogonal division division multiplexing (OFDM) scheme may be used. In the present specification, the term multiplexing is used as necessary to include any or all of them as necessary. In general, sampling and multiplexing can be done simultaneously on the same device or separately on separate devices. As described above, two types of stereoscopic images generated by sampling and multi-plexing are sequentially displayed on the flat panel display device 10. The flat panel display element 10 can be any flat panel display panel known in the art such as LCD panel, PDP, LCoS, FED (Field Emitting Display), ELD, LED and VFD or any flat panel display device to be developed in the future. have. On the front of the flat panel display element 10, a two-shape switchable LCD shutter 41 without a color filter is provided from the flat panel display element 10 at a predetermined interval d. The interval refers to a distance at which the image signal emitted from the sub-pixel 101 of the flat panel display element can be focused and most clearly detected by the observer V. FIG. Therefore, the constant interval d may be determined by the size of the sub-pixel 101, the size of the pixel P, or the size of the projection image, that is, the switching unit element 413 included in the n-type switchable LCD shutter 41, or the like. Can be. The image information sequentially displayed on the flat panel display element 10 is recognized by the observer V located at the specified distance D from the n-type switchable LCD shutter 10, thereby allowing the stereoscopic image to be displayed by the stereoscopic image display device according to the present invention. The stereoscopic image is visualized to the observer (V). For the observer V, only a specific parallax image becomes an effective image.

The stereoscopic image display device according to the present invention is characterized by a process of sampling and multiplexing the parallax images for each direction and sequentially displaying the parallax images through an LCD shutter that can switch the n parallax images into n patterns. The sampling pattern and the switchable LCD pattern are shown in FIG. 5.

FIG. 5 illustrates a stereoscopic image sampling pattern and a switchable LCD pattern for each type in five parallax imaging methods.                     

5 shows three types of stereoscopic image sampling patterns, and two types of sampling patterns 51 include respective effective areas at different positions of the switchable LCD shutter pattern 41. In FIG. 5, each of the valid regions in the sampling patterns 51 of the type 1 type to the type 5 type sampling pattern means a portion indicated by 1 by a small circle. Types 1 to 5 of the sampling pattern 51 are displayed sequentially (Time-Sequentially) on flat panel display elements (e.g., LCD, PDP, etc.). The sequential display is made by switching the LCD shutter pattern 41. The LCD shutter 41 can be switched to n patterns corresponding to each type, and the LCD shutter is controlled to synchronize according to the type of stereoscopic image. In the present invention, it is possible to express a three-dimensional image with improved haptic improvement by using the LCD shutter pattern switchable in this way. For the sake of clarity, the case of five sampling patterns has been described as an example. However, if necessary, there may be five or more sampling patterns, and accordingly, the pattern of the LCD shutters may be the same number or any other number. Therefore, at least n sampling patterns can be made and the same or any number of LCD shutter patterns can be made. This is also the same in the description below.

6 illustrates a process of displaying a stereoscopic image in the stereoscopic image display apparatus according to the present invention.

Referring to FIG. 6, first, n direction-specific parallax images are selected (S61). According to the number n of parallax parallax images, an image signal is sampled (S63). The sampled signal is modulated to be multiplexed (S63). The sampling and multiplexing can be done simultaneously on the same device or on different devices. The sampling scheme and multiplexing scheme may be made according to any method known in the art. N synthesized stereoscopic image frames of each type are generated by the sampling and multiplexing (S63) (S63), and the image frames are sequentially displayed on the flat panel display device (S67). The display of the image information on the flat panel display element 10 is performed in such a manner that n-type stereoscopic images are switched. The LCD shutter pattern shape signals corresponding to the n-type stereoscopic images to be switched as described above are synchronized to be transmitted to the LCD shutter 41 so that the corresponding shapes of the LCD shutter 41 can be displayed (S69). . When the process is performed at a high speed, for example, at a speed at which the viewer cannot recognize the switching of the LCD shutter 41, it is recognized by the observer that n type stereoscopic image signals transmitted by parallax are simultaneously transmitted. As described above, the image frame is not transmitted to the actual observer but is simultaneously transmitted, so that the observer senses different types of image information in both eyes, and the stereoscopic image is recognized by the synthesized image.

FIG. 7 illustrates a separation form of parallax images for each direction when a parallax stereoscopic method is used in an embodiment of a stereoscopic image display device according to the present invention.

As illustrated in FIG. 7, the stereoscopic image display device according to the present invention is sampled according to a stereoscopic image sampling pattern, and the switching unit element of the LCD shutter 41 capable of n-type switching of image information displayed on the flat panel display element 10. The stereoscopic image is provided to the viewer via (413). Therefore, the image information of the subpixel 101 of the flat panel display element 10 is optimal from the LDC shutter 41 via the corresponding switching unit element 413 located at a constant distance d from the flat panel display element 10. The projection image 71 is formed at the stereoscopic viewing distance D. The constant distance d is determined according to the size L of the projection image for each direction, that is, the projection image 71 in which the sub-pixels 101 are projected at the optimal stereoscopic viewing distance D, and is preferably larger than the distance between both eyes of a person. It can be set smaller.

Fig. 8 shows the structure and operation principle of the n-type switchable LCD shutter device 8 of the stereoscopic image display device according to the present invention.

As shown in FIG. 8, the LCD shutter 41 of the n-type switchable LCD shutter device 4 includes a transparent area 43 and an opaque area 45. 8 shows the configuration and operation principle of the n-type switchable LCD shutter device 8 in a stereoscopic system using five directional parallax images. The transparent area 43 and the opaque area 45 each include a switching unit element 413. In general, the switching unit elements 413 of the transparent / opaque regions 43 and 45 form a two-dimensional array of transparent / opaque switching unit elements 413 from which color filters of sub-pixel resolution of the flat panel display element have been removed. . The size of the switching unit element 413 included in the transparent / opaque regions 43 and 45 corresponds to the sub-pixel of the flat panel display element. The switching unit elements 413 of each of the transparent / opaque regions 43 and 45 may be switched to transparent / opaque by the application of voltage in the voltage application line 81 wired downward of the LCD shutter 41. have. The LCD shutter 41 of the stereoscopic image display device according to the present invention is grouped so that the switching unit elements 413 can be transparent or opaque by type, and are controlled by the ON / OFF switching element group control devices 85 and 87. The switching unit element 413 as a whole is characterized in that the switching to transparent / opaque at one time. When a voltage is applied to the specific type of transparent / opaque switching unit element group by the operation of the ON / OFF switching element group control device 85 (ON), the remaining type of transparent / opaque switching unit element group is the corresponding switching element group control device. By 87, the voltage is set so that no voltage is applied (OFF). In the embodiment shown in FIG. 8, as an example of a stereoscopic system using five directional parallax images, an LCD shutter 41 switchable in five forms and switching element group devices 85 and 87 for controlling the respective forms are provided. Is shown. As shown in FIG. 8, when any one of the group control devices 85 is turned on and the corresponding switching group element becomes transparent, the other group control device 87 is turned off and thus the corresponding switching unit element group is It becomes opaque. Each group control device is shown as T1 to T5. In this way, if the ON signal is input to the switching element group control device 85 of the Form I and the corresponding transparent / opaque switching elements of the Form I are switched to transparent by the voltage application line 83 of the Form I group, The transparent / opaque switching unit element group switches to opacity because no voltage is applied (OFF). Similarly, if a voltage is applied to any of the type II group control devices 87 (ON), the corresponding switching unit element group of the type II transparent / opaque switching unit element group is switched to transparent and the transparent / opaque type I The switching unit element group and the remaining switching unit element group of Form II are switched to opaque. In this way, when the transparent / opaque region of the LCD shutter 41 is transparent to each other according to the number of parallax images for each direction, when the corresponding image information is transmitted to the viewer, the observer synthesizes the images transmitted by the parallax and recognizes the stereoscopic images. Appears as an image.

The stereoscopic image display method according to the present invention is performed through the following process. First, n type stereoscopic image frames are generated by sampling and multiplexing from n direction parallax image frames according to n type stereoscopic image sampling patterns 17. The stereoscopic image frame is sequentially transmitted to a flat panel display device such as an LCD and a PDP by a stereoscopic image switching module. The stereoscopic image switching module may be, for example, a known modulation / demodulation device or time division transmission / reception device capable of sampling / multiplexing an image signal from an analog signal to a digital signal and transmitting the same to another device. At the same time, the switchable LCD shutter pattern type corresponding to the switched stereoscopic image is synchronized with the type of the stereoscopic image and is sent to the n-type switchable LCD shutter so that the elements of the type are simultaneously switched to the transmission area. A process of recognizing image information transmitted through the transmission region to an observer is illustrated in FIG. 9.

9 illustrates a principle of improving resolution perceived by an observer in a stereoscopic display device using a switchable LCD shutter according to the present invention.

As illustrated in FIG. 9, five types of stereoscopic image sampling patterns and switchable LCD patterns are generated. The corresponding stereoscopic image sampling pattern is transmitted to the observer at time t1 to time t5. As shown in FIG. 9, sub-pixels 91 corresponding to each type of transmission region are parts of the same parallax image, and image information sent through the sub-pixels 19 is transmitted at different parallax, but observer V Will leave afterimages on the retina. When this process is repeated at high speed, the afterimages are synthesized in the brain of the observer V, and it is recognized that the specific parallax image is seen on the entire screen, thereby preventing the loss of the haptic resolution 9. When the difference between the time t1 and the time t5 is fast enough that the observer cannot recognize the image information transmitted to the subpixel 91 of the parallax stereoscopic image sampling pattern 41, the image information transmitted by the observer's retina At the same time, it is felt that the effective area 93 has been transmitted.

In the description herein, for the sake of clarity of understanding of the present invention, transmission of image information for each direction at five sampling patterns, thus five LCD shutter patterns and five different time points t1 to t5 has been described as an example. However, if necessary, there may be two or more sampling patterns, and the LCD shutter pattern corresponding to the number of sampling patterns and the corresponding time points t1, t2, t3... It is possible to display a stereoscopic image due to the projection of the image information for each direction in. In this way, at least two sampling patterns may be provided, and corresponding LCD shutter patterns and controls may be performed.

The stereoscopic image display device according to the present invention has been described above in detail by using an embodiment. The embodiments presented are exemplary and can be made by those skilled in the art to various modifications and modifications without departing from the scope of the technical spirit of the present invention. The scope of the invention is not limited by these modifications and variations, but is only limited by the claims below.

The stereoscopic image display device according to the present invention is provided with an LCD shutter capable of switching by type on the front of the flat panel display device and displays a stereoscopic image sampled and multiplexed according to a sampling pattern for each type, but the type of the LCD shutter is a stereoscopic image type. By controlling in synchronism with the control, the loss of the resolution is prevented, thereby providing a three-dimensional image with no loss of haptic resolution.

Claims (16)

In the display method of a stereoscopic image using a flat panel display device, determining n number of parallax image frames for each direction, and sampling and multiplexing according to n types of stereoscopic image sampling patterns according to the determination of the n direction parallax image frames; generating n synthesized stereoscopic image frames for each type; Sequentially transmitting the stereoscopic image frame to the flat panel display device; And And switching the LCD shutter switchable to the corresponding type according to the type-specific stereoscopic image frame. The method of claim 1, wherein the sequential transmission is performed by a stereoscopic image switching module. The method of claim 1, wherein the switching of the LCD shutter is synchronized with the type of the stereoscopic image. The method of claim 1, wherein the LCD shutter comprises transparent and opaque switching unit element groups. The method of claim 1, wherein the unit elements of the transparent and opaque switching unit element group form a two-dimensional array. The method according to claim 1, wherein the LCD shutter is located at a constant distance d to the front of the flat panel display element, the constant distance d is determined by the size of the projection image projected by one direction projection image at the optimum stereoscopic observation distance A stereoscopic image display method. In the stereoscopic image display device, A stereoscopic image switching module for sampling and multiplexing image information from n direction parallax image frames according to n type stereoscopic image sampling patterns according to the determination of the n direction parallax image frames; An LCD shutter device comprising a switchable LCD shutter comprising a plurality of switching unit elements that can be switched from transparent to opaque or vice versa and an ON / OFF control device; And a flat panel display device that sequentially receives image information from the stereoscopic image switching module via the LCD shutter, wherein the image information may be sequentially displayed through the LCD shutter according to a stereoscopic image sampling pattern. Stereoscopic image display device. The stereoscopic image display device of claim 7, wherein the plurality of switching unit elements are divided into a transparent group and an opaque group. The stereoscopic image display device of claim 8, wherein the transparent group and the opaque group are switched to transparent or opaque by an ON / OFF signal switching device. The stereoscopic image display apparatus of claim 7, wherein the switching of the LDC shutter is transparent or opaque, in synchronization with reception of n types of stereoscopic image sampling patterns of the image display element. The 3D image display device of claim 7, wherein the LCD shutter includes n groups divided according to the n types of stereoscopic image sampling, and the n groups are sequentially switched to a transparent state. The method according to claim 7, wherein the LCD shutter is located at a constant distance d in front of the flat panel display element, the constant distance d is determined by the size of the projection image projected by one direction projection image at the optimum stereoscopic observation distance Stereoscopic video display device. The stereoscopic image display device of claim 12, wherein the constant distance d is smaller than a distance between both eyes of an observer. 8. The stereoscopic image display device of claim 7, wherein n is five. The stereoscopic image display device of claim 7, wherein the LCD shutter operates in a parallax manner. The stereoscopic image display device of claim 7, wherein the flat panel display element is an LCD panel, a PDP display panel, or an LCoS panel.

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