KR101239230B1 - 3-dimensional displaying apparatus and driving method thereof - Google Patents

3-dimensional displaying apparatus and driving method thereof Download PDF

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Publication number
KR101239230B1
KR101239230B1 KR1020100129579A KR20100129579A KR101239230B1 KR 101239230 B1 KR101239230 B1 KR 101239230B1 KR 1020100129579 A KR1020100129579 A KR 1020100129579A KR 20100129579 A KR20100129579 A KR 20100129579A KR 101239230 B1 KR101239230 B1 KR 101239230B1
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South Korea
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image display
display panel
position
pupil
lenticular lens
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KR1020100129579A
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Korean (ko)
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KR20120068127A (en
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김성규
윤기혁
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한국과학기술연구원
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30Image reproducers
    • H04N13/302Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/305Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using lenticular lenses, e.g. arrangements of cylindrical lenses
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30Image reproducers
    • H04N13/366Image reproducers using viewer tracking
    • H04N13/383Image reproducers using viewer tracking for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes

Abstract

The present invention provides an image display panel; And a lenticular lens sheet formed on a front surface of the image display panel, wherein the lenticular lens sheet is designed to pass the image information emitted from the image display panel to form a viewing area at an imaging position of a predetermined distance from the image display panel. The present invention relates to a stereoscopic image display device and a driving method thereof. As a result, when the horizontal position of the observer changes, the change in the brightness of the image information and crosstalk between adjacent viewing areas can be minimized, and inverse stereoscopic vision can be prevented, and the nonuniformity of the brightness distribution in the viewing area can be solved.

Description

Stereoscopic Display and Driving Method {3-DIMENSIONAL DISPLAYING APPARATUS AND DRIVING METHOD THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image display device, and more particularly, by using an autostereoscopic method (or an autostereoscopic method) using a lenticular lens, when the observer's horizontal position changes, the brightness change and the adjacent of the image information are changed. The present invention relates to a stereoscopic image display apparatus and a driving method thereof capable of minimizing crosstalk between viewing regions and preventing reverse stereoscopic vision.

Recently, as the users' demand for a display device capable of realizing a three-dimensional image capable of realizing stereoscopic characteristics that cannot be realized in a conventional two-dimensional image is increasing, a display device capable of expressing a three-dimensional image has been developed in response to this. .

The reason why a person feels a three-dimensional feeling when looking at an object in nature is that the angle of view of both eyes is slightly different when staring at the object with the left and right eyes. The image information of the object with slightly different viewing angles is imaged on the retina through the right eye and the left eye, and the stereoscopic vision information is transmitted to the brain through the optic nerve.

Specifically, a three-dimensional image is generally performed by the principle of stereo vision through two eyes. The parallax of two eyes, that is, binocular disparity that appears because the eyes are about 65 mm apart. A display device capable of displaying a three-dimensional image by using is proposed. In detail about 3D image implementation, the left and right eyes looking at the display device see different 2D images, and when these two images are delivered to the brain through the retina, the brain accurately fuses them with each other and the original 3D image. It is to reproduce the sense of depth and reality of the phenomenon, such a phenomenon is commonly called stereography (stereography).

In general, a 3D image reproducing apparatus using a stereographic image method displays a digital image or a computer graphic image separated into a left eye image and a right eye image by using an LCD monitor or a CRT monitor. Alternately enters the left and right eyes of an observer equipped with. Two-dimensional images coming out of the LCD monitor or CRT monitor are synchronized by the infrared sensor and are incident to the left and right eyes alternately, so that an observer wearing special glasses feels as if they are viewing a three-dimensional image. In the existing method, only observers wearing special glasses can see stereoscopic images, and several people cannot observe stereoscopic images at the same time. In addition, when observing stereoscopic images through special glasses, the eyes are heavily burdened, and the observer easily feels fatigue.

Therefore, in addition to the three-dimensional image display by the special glasses, a glasses-free three-dimensional image display and a holographic display system has been developed.

Meanwhile, the conventional autostereoscopic 3D stereoscopic image display apparatus disposes a parallax separating means in front of a conventional 2D image display apparatus, and delivers a 3D stereoscopic image by delivering images of disparity different from the left eye and the right eye of the observer. It provides the viewer with a realistic three-dimensional image. Parallax barrier plates and lenticular lens sheets are provided as parallax separation means for providing a three-dimensional effect. An example of implementing a three-dimensional image using a parallax barrier plate as the parallax separation means is shown in FIG. 1.

1 is a view illustrating an implementation principle of a 3D image information display apparatus of two viewing areas according to an embodiment of the prior art. Referring to FIG. 1, the 3D image information display apparatus 100 according to the prior art has a parallax barrier plate disposed spaced apart from a general 2D image display panel 110 and a front surface of the image display panel 110. 130). The pixel formed in the image display panel 110 includes a left eye image pixel 13 and a right eye image pixel 15. The parallax barrier plate 130 is composed of an open area and a barrier area, and image information emitted from the left eye image pixel 13 and the right eye image pixel 15 passes through the open area, but does not pass through the barrier area. As such, the image information passing through the open area arrives focused on the designed viewing distance. On the other hand, at the position of the observer at the designed viewing distance, only the left eye image information is observed at the A position, and only the right eye image information is observed at the B position.

However, there are various problems to be solved in a method of displaying a 3D image through parallax separation by the parallax barrier plate 130. First, for example, if the position of the eye moves horizontally so that the left eye is in the D position and the right eye is in the E position, the left eye image pixel 13 and the right eye image pixel ( The image information emitted by 15) is applied to the left and right eyes at the same time, so that a clear three-dimensional image cannot be seen. This phenomenon is referred to as crosstalk between views.

Secondly, when the viewer's left eye is in B position and the right eye is in C position by horizontal movement of the observer, the left eye sees the image information emitted from the right eye image pixel 15, and the right eye is left eye image pixel ( You will see the image information emitted in 13). As a result, there is a problem of not being able to see normal 3D stereoscopic image information due to inverted stereoscopic vision.

Third, there is a problem that the brightness of the image in the corresponding viewing area is not uniform, and the brightness of the image changes when the eye moves horizontally. This problem will be described in detail with reference to FIG.

FIG. 2 is a graph of light distribution between regions of a 3D image using a conventional parallax separation means. FIG. The horizontal axis represents the horizontal position at the observation distance, and the vertical axis represents the light intensity. Referring to FIG. 2, for example, when the eyes are positioned in the first eye field (indicated by a solid line) and the second eye field (indicated by a dashed line), respectively, and the horizontal eye moves horizontally to the right or left, the brightness of the corresponding image. It can be seen that the crosstalk problem, which is mixed with the adjacent field view information, occurs simultaneously.

  Although the foregoing description has exemplified the case of using a parallax barrier plate as the time difference separating means, the same problem as described above arises when the lenticular lens sheet is used.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and an object of the present invention is to minimize the change in brightness and cross talk between adjacent viewing areas in an autostereoscopic 3D display device, and to prevent reverse stereoscopic vision. The present invention provides a stereoscopic image display device and a driving method thereof.

In order to solve the above problems, a stereoscopic image display apparatus according to the present invention, the image display panel; And a lenticular lens sheet formed on a front surface of the image display panel, wherein the lenticular lens sheet is designed to pass the image information emitted from the image display panel to form a viewing area at an imaging position of a predetermined distance from the image display panel. It features.

Here, the viewing area may be formed within ± 10% of the imaging position.

The stereoscopic image display device may further include a diffusion plate between the image display panel and the lenticular lens sheet.

The image display panel includes a flat panel display including a liquid crystal display (LCD), a plasma display panel (PDP), and a field emission display (FED) and a screen of a projection optical system. Can be any one of

The stereoscopic image display apparatus may further include a pupil tracking unit that tracks the position of the observer's pupil.

In this case, pixels constituting a plurality of data rows are arranged in the image display panel, and pixels of at least one row of the plurality of data rows are horizontally shifted so as to deviate from an array of pixels of adjacent data rows on a vertical line.

Preferably, the horizontally moved distance is 1/2 of the horizontal length of the pixel so that the image display panel forms image information of two viewing areas.

In addition, the pupil tracking unit feeds back the position of the tracked pupil to the image display panel, and the image display panel includes one of an even data row and an odd data row among the plurality of data rows according to the position of the fed back pupil. Only pixels in the data row can be driven.

The stereoscopic image display device may further include a horizontal moving unit configured to adjust a relative position of the lenticular lens sheet and the image display panel in a horizontal direction.

In this case, the pupil tracking unit feeds back the position of the tracked pupil to the horizontal movement unit, and the horizontal movement unit is the lenticular so that the observer's pupil is located at a central portion of the corresponding viewing area according to the position of the feedback pupil. The relative position of the lens sheet and the image display panel in the horizontal direction may be adjusted.

In addition, the method for driving a stereoscopic image display device according to the present invention includes (a) imaging a predetermined distance from the image display panel by passing a lenticular lens sheet formed on the front of the image display panel through image information emitted from the image display panel. Designing to create a viewing area at the location; (b) tracking, by the pupil tracking unit, the position of the pupil of the observer and feeding back the tracked pupil position to the image display panel or the horizontal moving unit; and (c) adjusting the central portion of the viewing area at the position of the feedback pupil in the image display panel or the horizontal moving part.

Here, the viewing area of step (a) may be formed within ± 10% from the imaging position.

Also, pixels constituting a plurality of data rows are disposed in the image display panel of step (a), and pixels of at least one row of the plurality of data rows deviate from an array of pixels of an adjacent data row on a vertical line. Can be moved horizontally.

In addition, the horizontally moved distance is 1/2 of the horizontal length of the pixel so that the image display panel of step (a) forms image information of two viewing areas.

In this case, in the step (c), the image display panel may drive only the pixels of any one of the even data row and the odd data row of the plurality of data rows according to the position of the fed back pupil.

On the other hand, in the step (c), the horizontal moving unit is a relative position in the horizontal direction of the lenticular lens sheet and the image display panel so that the observer's pupil is located in the center portion of the viewing field according to the feedback position of the pupil. Can be adjusted in real time.

According to the present invention, when the horizontal position of the observer is changed, it is possible to minimize the change in the brightness of the image information and the cross talk between adjacent viewing areas, and to prevent reverse stereoscopic vision. In addition, the nonuniformity of the brightness distribution in the viewing region can be eliminated.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the principle of implementation of a three-dimensional image display apparatus using a conventional parallax barrier plate; Fig.
2 is a light distribution graph of inter-view regions of three-dimensional images using conventional parallax separation means.
3 is a conceptual diagram of an ideal two-view three-dimensional stereoscopic image according to the first embodiment of the present invention.
4 is a first conceptual diagram illustrating a relationship between a lenticular lens sheet and an observation distance.
5 is a second conceptual diagram illustrating a relationship between a lenticular lens sheet and an observation distance.
6 is a conceptual diagram showing a relationship between a viewing area change and a stereoscopic image during horizontal movement at an ideal observation position.
7 is a conceptual diagram of an actual two-view three-dimensional stereoscopic image according to the first embodiment of the present invention.
8 is a conceptual diagram showing a relationship between a viewing area change and a stereoscopic image during horizontal movement at an actual observation position.
9 is a structural diagram of a stereoscopic image display device according to a second embodiment of the present invention;
10 is a conceptual diagram illustrating an operation principle according to a second embodiment of the present invention.
11 is a structural diagram of a stereoscopic image display device according to a third embodiment of the present invention;
12 is a conceptual diagram illustrating an operating principle according to a third embodiment of the present invention.
13 is a structural diagram of a stereoscopic image display device according to a fourth embodiment of the present invention;

Hereinafter, a stereoscopic image display device and a driving method thereof according to an exemplary embodiment will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention.

In addition, the size of each component in the drawings may be exaggerated for the sake of explanation and does not mean a size actually applied.

My Example 1

3 is a conceptual diagram of an ideal two-view three-dimensional stereoscopic image according to the first embodiment of the present invention. Referring to FIG. 3, the stereoscopic image display apparatus according to the first embodiment of the present invention is arranged to be spaced apart from the image display panel 210 and the image display panel 120 on which information of two viewing areas or more is displayed. Lenticular lens sheet 250. The lenticular lens sheet 250 sets the curvature of the lenticular lens so that an image of the image is formed at an observation distance at which the image information formed on the image display panel 210 is designed. That is, the lenticular lens sheet 250 passes through the image information that is formed on the front surface of the image display panel 210 and passes through the image information. It is designed to form a viewing area at 150.

In this figure, as an example of the present invention, a left view and a right view are separated from an observation position designed for two-view image information. In the present exemplary embodiment, the image information of the two-view field includes two image information for each pitch of one lenticular lens, but it is set such that n image information is included for each pitch of the lenticular lens, and thus the arbitrary n-view region (n Is an integer greater than 2) can be displayed at the imaging position (150).

4 is a first conceptual diagram illustrating a relationship between a lenticular lens sheet and an observation distance. Referring to FIG. 4, an inter-view distance (E) formed at a position spaced apart from a distance (Δp) and a predetermined distance (D 0 ) between the image information on the back of the lenticular passing through the optical center 160 of the lenticular lens sheet 250. The relationship with In this case, assuming that the total thickness of the lenticular lens sheet 250 is t, and the curvature of the lens of the lenticular lens sheet 250 is r, the relationship is expressed by Equation 1 below.

Figure 112010083253961-pat00001

5 is a second conceptual diagram illustrating a relationship between a lenticular lens sheet and an observation distance. Referring to FIG. 5, the relationship between the pitch Pd of the image plane of the image display panel and the pitch P of the lens of the lenticular sheet is expressed by Equation 2 below.

Figure 112010083253961-pat00002

If the above relations are satisfied, the observer can observe n viewing areas when moving horizontally from the designed D 0 position. As shown in FIG. 3, the refractive index of the lenticular lens sheet 250 may be appropriately selected under conditions satisfying the above relations, so that the image information of the image display panel 210 may be imaged at the observation position. The horizontal size of each image information thus produced forms a corresponding viewing area. As shown in FIG. 3, a viewing area distribution of an image on which image information is displayed is shown in FIG. 6.

6 is a conceptual diagram illustrating a relationship between a viewing area change and a stereoscopic image during horizontal movement at an ideal observation position. Referring to FIG. 6, when two viewing areas are formed as shown in FIG. 3, when the observer horizontally moves at the designed viewing distance D 0 , the viewing area corresponding to the L viewing area and the right eye where the image information corresponding to the left eye is located is shown. R viewing zones in which video information is located are continuously arranged. Therefore, if the observer's left eye is in the L eye region and the right eye is in the R eye region, a uniform three-dimensional image can be viewed. However, when the observer moves beyond the range of the corresponding field of view, for example, the left eye of the observer is located at the R field of view where the right image is visible, and the right eye is located at the L field of view where the left image is shown. The problem of seeing still remains.

The image display panel used in the present invention includes a flat panel display and a projection including a liquid crystal display (LCD), a plasma display panel (PDP) and a field emission display (FED). It can be any one of the screens of the optical system. As illustrated in FIG. 7, the image of the panel or the screen has a black matrix (BM) area disposed between adjacent pixels, and thus there is an area where no light is actually emitted.

7 is a conceptual diagram of an actual two-view three-dimensional stereoscopic image according to the first embodiment of the present invention. The BM region is typically about 10-15% of the total pixel size. In the first embodiment of the present invention, light cannot be emitted in the BM region. Therefore, as shown in FIG. 8, when the observer horizontally moves from the observation position as shown in FIG. 8, light (image information emitted from the pixel) does not reach the portion corresponding to the BM area between the viewing areas, and thus no viewing area is formed. .

8 is a conceptual diagram illustrating a relationship between a viewing area change and a stereoscopic image during horizontal movement at an actual observation position. Referring to FIG. 8, the upper view shows an ideal viewing distribution in which light does not reach the BM region and thus no viewing region is formed. However, in practice, as shown in the lower figure, in the BM region, the luminance between adjacent left and right viewing areas is reduced to form a portion where both viewing areas intersect. As a result, crosstalk problems may occur in this BM region. In addition, although ideally, the observation position is designed as the image position 150 of the pixels, the flatness of each viewing area is reduced even if the deviation is about ± 10% from the imaging position 150, but the concept of the present invention can be applied.

My 2 Example

In the above-described first embodiment, the observer's eyes can observe a stereoscopic image with uniform brightness when the observer's eyes move horizontally within the viewing region, but the inverse stereoscopic and crosstalk problems cannot be completely eliminated during the inter-view movement. The second embodiment will now be described in detail for the purpose of improving this problem.

9 is a structural diagram of a stereoscopic image display device according to a second embodiment of the present invention. Referring to FIG. 9, the structure of the stereoscopic image display device according to the second embodiment of the present invention is a design value such as a pitch of a lens, a pitch of a pixel, and an observation position of each lenticular lens sheet 250 as in the first embodiment. Is used. Meanwhile, the structure of the stereoscopic image display apparatus 200 according to the second embodiment of the present invention further includes a pupil tracking unit that tracks the horizontal position of the observer's eyes.

In addition, pixels constituting a plurality of data rows are arranged in the image display panel 210. In particular, pixels between adjacent data rows are not constantly arranged on a vertical line. That is, the pixels of at least one row of the plurality of data rows are horizontally shifted so as to deviate from the array of pixels of adjacent data rows on a vertical line (in this figure, the pixels of all data rows are vertically aligned with the arrangement of pixels of adjacent data rows). Shown horizontally shifted out of phase). In addition, in this embodiment, when two viewing areas are formed, two horizontal pixels are included in one lenticular lens pitch and ± P / 2 horizontal movement is performed for each adjacent row. Therefore, in the case of forming n viewing areas having two viewing areas or more, n pixels in the same row may correspond to one lenticular lens pitch, and the pixel shift of adjacent data rows may be set to be equal to or greater than ± P / n. . This second embodiment will be described below with reference to FIG. 10 for the principle of preventing crosstalk, which is an overlapping phenomenon between the inverse stereoscopic time and the adjacent visual field during the horizontal movement of the observer.

10 is a conceptual diagram illustrating an operating principle according to a second embodiment of the present invention. When the lens of the lenticular lens sheet 250 and the pixel arrangement of the image display panel 210 are illustrated in FIG. 9, the image information emitted from each of the pixels of the even data row and the pixels of the odd data row is an observation distance. Form a viewing area in different horizontal positions of the. As shown in the inter-view optical distribution graph at the lower left, the image information passing through the lenticular lens sheet 250 is the image of the left eye as shown by the solid line at the designed viewing distance (first viewing area (left solid line region)). And an image of the right eye (the second viewing area (right right line region)) is formed separately. In this case, when the observer's left eye and right eye are located at the first viewing area and the second viewing area, respectively, a clear three-dimensional stereoscopic image can be viewed.

However, when the observer moves horizontally to the right, for example, the observer moves to a position beyond each viewing area through the area where the brightness of the viewing area decreases. In this case, the observer cannot see a clear three-dimensional stereoscopic image. Accordingly, the pupil tracking unit 270 connected to the image display panel tracks the position of the observer's pupil and feeds back the tracking result to the image display panel 210. In this case, when the pupil position is moved to the position of the edge portion of the corresponding viewing field in the feedback tracking result, it may be predicted as the position where the brightness of the viewing region of the even and odd data rows is reversed. Therefore, at this point in time, as shown in the upper right, the pixels in the odd data rows are driven to display the image information, and the pixels in the even data rows are not driven so that the image information is not displayed. As a result, the observer can minimize the crosstalk between the change in brightness of the corresponding field of view and the adjacent field of view, as shown in the lower right, and can observe the 3D stereoscopic image without the reverse stereoscopic view. In this embodiment, the stereoscopic image of the simplest two-view field is taken as an example. As described above, n pixels of the same row correspond to one lenticular lens pitch, and the pixel shift of adjacent data rows is ± P / n or more. By setting it as n, it is also possible to form n viewing zones that are two or more viewing zones.

My 3 Example

11 is a structural diagram of a stereoscopic image display device according to a third embodiment of the present invention. The third embodiment of the present invention maintains the normal pixel structure and, like the effects of the second embodiment, is another object capable of observing a naturally sharp three-dimensional image without inverse stereoscopic or crosstalk during horizontal movement of the observer. How to implement Referring to FIG. 11, a structure of a stereoscopic image display device according to a third exemplary embodiment of the present invention is a design value such as a pitch of a lens, a pitch of a pixel, and an observation position of each lenticular lens sheet 250 as in the first exemplary embodiment. Is used. Meanwhile, the structure of the stereoscopic image display device 300 according to the third embodiment of the present invention further includes a horizontal moving part 290 for adjusting the relative position of the lenticular lens sheet 250 and the image display panel 210 in the horizontal direction. ). The horizontal moving unit 290 moves the lenticular lens sheet 250 or the image display panel 210 or both the lenticular lens sheet 250 and the image display panel 210 in the horizontal direction by several tens to hundreds of micrometers. The relative position of the lens sheet 250 and the image display panel 210 in the horizontal direction may be adjusted.

  12 is a conceptual diagram illustrating an operating principle according to a third embodiment of the present invention. Referring to FIG. 12, the left view shows that the observer's eye at the designed viewing position is located at the center of two viewing areas indicated by solid lines as shown in the lower left graph, and the lenticular lens sheet 250 is represented by the solid line at the upper left of FIG. 12. The lens array is shown at the marked position. In this case, the pixels of the first column from the left and the pixels 10b of the third column emit two-view image information corresponding to the right eye, and the pixels of the second column and the pixels 10a of the fourth column are the left eye. It emits one field of view video information corresponding to In this case, the left eye and the right eye of the observer are positioned at the first viewing area and the second viewing area, respectively, so that a clear three-dimensional stereoscopic image can be viewed.

However, when the observer moves horizontally to the right, for example, the observer moves to a position beyond each viewing area through the area where the brightness of the viewing area decreases. In this case, the observer cannot see a clear three-dimensional stereoscopic image. Accordingly, the pupil tracking unit 270 connected to the image display panel 210 tracks the position of the observer's pupil, and feeds back the tracking result to the horizontal moving unit 290 connected to the image display panel 210. More specifically, the pupil tracking unit 270 tracks the position of the observer's eye in real time, and feeds the tracking result back to the horizontal moving unit 290 to view the viewing position at the observer position for each position of the lenticular lens sheet 250. After calculating the position, the lenticular lens sheet 250 is horizontally moved in real time so that the observer's eye is in the center of the viewing field.

As a result, as shown in the right figure, the lenticular lens sheet 250 moves to the position indicated by the solid line in the upper right figure, so that the pixels in the second row and the pixels 10b in the fourth row from the left are placed in the right eye. The corresponding 2-view image information is emitted, and the pixels of the first column and the pixels 10a of the third column emit 1-view image information corresponding to the left eye. Thus, even if the observer changes the viewing position horizontally, it is possible to see a clear three-dimensional stereoscopic image without experiencing crosstalk between inverted stereoscopic and adjacent viewing regions.

In addition, in this drawing, since the stereoscopic image of the two-view field is taken as an example, the moving distance of the lenticular lens sheet 250 is as much as the width of one pixel. The horizontal movement distance of the lens sheet 250 may be larger than one pixel. In addition, the image display panel 210 may be horizontally moved while the lenticular lens sheet 250 is fixed, and both the lenticular lens sheet 250 and the image display panel 210 may be horizontally moved.

In the second embodiment of the present invention, since the pixels in different rows alternately display images according to the position of the observer's eye, the vertical resolution is substantially reduced, while in the third embodiment of the present invention, the decrease in the vertical resolution is However, there is a disadvantage in that an additional device such as a step motor for mechanically adjusting the horizontal position of the lenticular lens sheet 250 is added. Therefore, it is preferable to selectively apply the second embodiment and the third embodiment according to the application field of the 3D display device.

Fourth Example

13 is a structural diagram of a stereoscopic image display device according to a fourth embodiment of the present invention. Referring to FIG. 13, a basic configuration of a stereoscopic image display apparatus according to a fourth embodiment of the present invention further includes a diffuser 230 formed between the image display panel 210 and the lenticular lens sheet 250. do. The stereoscopic image display device of this embodiment is designed in the same manner as the first embodiment except for the addition of the diffusion plate 230. According to the type of the image display panel 210 in the first embodiment, there is a factor that makes the luminance distribution in the pixel not uniform. For example, when the liquid crystal display (LCD) is the image display panel 210, the light emitted from the backlight unit 211 may be a thin film transistor (TFT) array substrate 213, a color filter substrate 215. ) And the polarizer 217. In this case, a liquid crystal layer exists between the TFT array substrate 213 and the color filter substrate 215, and the spacers 219 are randomly distributed in the pixel in order to keep the thickness of the liquid crystal layer constant. The size of this spacer 219 is approximately several micrometers. The spacers 219 serve as scatterers, and in the case where the viewing position becomes the position where the image of each pixel is imaged and the viewing area is formed as in the first embodiment of the present invention, the brightness distribution according to the horizontal position in the viewing area is uniform. It can cause you not to. Therefore, in the case where the brightness distribution in the pixel is nonuniform in this way, by adding the diffusion plate 230 between the image display panel 210 and the lenticular lens sheet 250, the nonuniformity of the brightness distribution in the viewing region can be eliminated. .

In the foregoing detailed description of the present invention, specific examples have been described. However, various modifications are possible within the scope of the present invention. The technical spirit of the present invention should not be limited to the above-described embodiments of the present invention, but should be determined by the claims and equivalents thereof.

10: pixel 13: left eye image pixel
15: Right eye image pixel 20: BM portion (Black Matrix)
100, 200: stereoscopic image display apparatus 110, 210: image display panel
130: parallax barrier substrate 150: imaging position
160: optical center of lenticular lens sheet 211, backlight unit
213: TFT array substrate 215: color substrate
230: diffusion plate 250: lenticular lens sheet
270: pupil tracking unit 290: horizontal moving unit

Claims (16)

  1. An image display panel including pixels constituting a plurality of data rows;
    It is formed on the front of the image display panel and passes through the image information emitted from the image display panel, the position and refractive index of the image display panel to form a field of view with a flat light intensity at the imaging position of a predetermined distance from the image display panel. A lenticular lens sheet designed to be locked; And
    Includes; the pupil tracking unit for tracking the position of the pupil of the observer,
    Pixels of at least one row of the plurality of data rows of the image display panel are horizontally shifted with respect to the adjacent data rows so as to deviate from the arrangement of the pixels of the adjacent data rows on a vertical line.
    The pupil tracking unit feeds back the position of the tracked pupil to the image display panel, and the image display panel returns data of any one of an even data row and an odd data row among the plurality of data rows according to the position of the fed back pupil. And driving only pixels in a row.
  2. The method of claim 1,
    And the viewing area is formed within ± 10% of an interval between the image display panel and the imaging position at the imaging position.
  3. The method of claim 1,
    The stereoscopic image display device,
    And a diffuser plate between the image display panel and the lenticular lens sheet.
  4. The method of claim 1,
    The image display panel is any one of a flat panel display including a liquid crystal display (LCD), a plasma display (PDP) and a field emission display (FED) and a screen of a projection optical system. .
  5. delete
  6. delete
  7. The method of claim 1,
    And the horizontally shifted distance is 1/2 of the horizontal length of the pixel such that the image display panel forms image information of two viewing areas.
  8. delete
  9. The method of claim 1,
    The stereoscopic image display device,
    And a horizontal moving unit which adjusts a relative position of the lenticular lens sheet and the image display panel in a horizontal direction.
  10. The method of claim 9,
    The pupil tracking unit feeds back the position of the tracked pupil to the horizontal movement unit, and the horizontal movement unit is connected to the lenticular lens sheet so that an observer's pupil is located at a central portion of a corresponding viewing area according to the position of the feedback pupil. And adjusting a relative position in the horizontal direction of the image display panel.
  11. (a) passing the image information emitted from the image display panel through the lenticular lens sheet formed on the front of the image display panel, and according to the position of the lenticular lens sheet with respect to the image display panel and the design of the refractive index of the lenticular lens sheet. Forming a field of view where the illuminance of light is flat at an imaging position of a predetermined distance from the image display panel;
    (b) tracking, by the pupil tracking unit, the position of the pupil of the observer and feeding back the position of the tracked pupil to the image display panel; And
    (c) adjusting, at the image display panel, a center portion of the viewing area to be positioned at a position of the fed back pupil;
    Pixels constituting a plurality of data rows are disposed in the image display panel of step (a), and pixels of at least one row of the plurality of data rows are arranged so as to deviate from an array of pixels of adjacent data rows on a vertical line. Arranged horizontally with respect to the data rows,
    In the step (c), the image display panel drives only the pixels of any one of the even data row and the odd data row of the plurality of data rows according to the position of the fed back pupil. How to drive the device.
  12. 12. The method of claim 11,
    And the viewing area of step (a) is formed within ± 10% of a distance between the image display panel and the imaging position at the imaging position.
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KR100580216B1 (en) * 2004-12-29 2006-05-09 삼성전자주식회사 3d image display system
KR20060105351A (en) * 2005-04-04 2006-10-11 삼성전자주식회사 Stereo-scopic display apparatus capable of switching 2d/3d image
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