KR101349138B1 - Auto stereoscopic Display Apparatus Using Parallax Barrier - Google Patents

Abstract

Disclosed is a parallax barrier type stereoscopic image display device. In detail, the stereoscopic image display apparatus includes: a display module in which a first type pixel and a second type pixel capable of displaying a first direction image and a second direction image are repeatedly arranged in predetermined number units; And a barrier pattern positioned to be spaced apart from the display module by a predetermined distance, and arranged such that the first type pixel and the second type pixel are selectively visible in the horizontal direction in units of the predetermined number of pixels in the left and right eyes of the viewer. And a barrier module for controlling the driving of the barrier pattern, wherein the interval of the barrier pattern corresponds to the size of the predetermined number of pixels.

Description

Parallax barrier type stereoscopic display device {Auto stereoscopic Display Apparatus Using Parallax Barrier}

The present invention relates to a parallax barrier type stereoscopic image display device. More specifically, the present invention relates to a parallax barrier type stereoscopic image display device suitable for high resolution image display.

In general, a method of implementing a stereoscopic image (or a 3D image) is implemented by illuminating different images on two eyes of a human, and a stereoscopic image display device uses separate glasses for illuminating different images on two eyes. Depending on whether or not it is necessary, it is divided into a three-dimensional stereoscopic image display device and a non-stereoscopic 3D image display device.

Spectacular stereoscopic image display apparatus must bear the inconvenience of observer wearing special glasses, but non-stereoscopic stereoscopic image display apparatus can feel stereoscopic image simply by staring at the screen without wearing the above glasses. Since the shortcomings of the stereoscopic image display device can be solved, many researches on this are being conducted. The non-stereoscopic 3D display device is largely classified into a lenticular device and a parallax-barrier device.

An object of the present invention is to provide a parallax barrier type stereoscopic image display device suitable for high resolution image display.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

According to an aspect of the present invention, a stereoscopic image display device includes: a display module in which a first type pixel and a second type pixel capable of displaying a first direction image and a second direction image, respectively, are repeatedly arranged in a predetermined number unit; And a barrier pattern positioned to be spaced apart from the display module by a predetermined distance, and arranged such that the first type pixel and the second type pixel are selectively visible in the horizontal direction in units of the predetermined number of pixels in the left and right eyes of the viewer. And a barrier module for controlling driving of the barrier pattern, wherein the interval of the barrier pattern corresponds to the size of the pixels in the predetermined number unit.

The first type pixel and the second type pixel may include subpixels that display red (R), green (G), and blue (B) light, respectively.

Preferably, the display module is characterized in that the two first type pixels and the two second type pixels are arranged repeatedly, more preferably, the barrier pattern is a vertical direction every two pixels Characterized in that arranged.

That is, the preset number is two. Further, the preset number is increased in proportion to the resolution of the display module.

The predetermined number of first type pixels are incident on the left eye of the viewer through one interval of the barrier pattern, and the predetermined number of second type pixels of the preset number are on the right eye of the viewer through one interval of the barrier pattern. Characterized in that the incident.

The parallax barrier type stereoscopic image display device according to the embodiments of the present invention is more suitable for displaying a high resolution image, and in particular, provides a larger viewing angle to a viewer, thereby providing convenience for viewing stereoscopic images.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

1A is a cross-sectional view of a stereoscopic image display device using a parallax barrier, and FIG. 1B is a perspective view of a stereoscopic image display device using a parallax barrier.
2 is a diagram illustrating a left image and a right image respectively captured by two cameras.
3 is a diagram illustrating an image obtained by synthesizing a left image and a right image photographed using two cameras.
FIG. 4 is a front view of displaying each pixel in subpixel units in a stereoscopic image display device using a parallax-barrier according to the related art.
FIG. 5 is a cross-sectional view illustrating a situation in which respective pixels incident to the left and right eyes are incident through the stereoscopic image display apparatus using the parallax-barrier of FIG. 4.
FIG. 6 is a front view showing each pixel in units of subpixels when a pixel of a display module is doubled in a stereoscopic image display device using a parallax-barrier according to the related art.
FIG. 7 is a cross-sectional view illustrating a situation in which each pixel incident to the left eye and the right eye enters through the stereoscopic image display apparatus using the parallax-barrier of FIG. 6.
8 is a front view of a stereoscopic image display apparatus using a parallax barrier according to an exemplary embodiment of the present invention.
FIG. 9 is a cross-sectional view illustrating a situation in which each pixel incident to the left eye and the right eye is incident through the stereoscopic image display apparatus using the parallax-barrier according to the exemplary embodiment of FIG. 8.
FIG. 10 illustrates two pixels viewed through the left eye using a stereoscopic image display device using a parallax-barrier according to an embodiment of the present invention.
FIG. 11 illustrates two pixels visible through the right eye using a stereoscopic image display device using a parallax-barrier according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description, together with the accompanying drawings, is intended to illustrate exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced.

The following detailed description includes specific details in order to provide a thorough understanding of the present invention. However, those skilled in the art will appreciate that the present invention may be practiced without these specific details. In some instances, well-known structures and devices are omitted or shown in block diagram form around the core functions of each structure and device in order to avoid obscuring the concepts of the present invention. In the following description, the same components are denoted by the same reference numerals throughout the specification.

Hereinafter, an operation of the stereoscopic image display device using the parallax-barrier method will be described with reference to FIGS. 1A and 1B.

1A is a cross-sectional view of a stereoscopic image display device using a parallax barrier, and FIG. 1B is a perspective view of a stereoscopic image display device using a parallax barrier.

In the parallax-barrier stereoscopic image display apparatus, as shown in FIGS. 1A and 1B, the left image L and the right side facing the vertical direction (YY 'direction in FIG. 1B) respectively corresponding to the left and right eyes, respectively. And a display module 10 in which images R are alternately arranged in a horizontal direction (XX 'direction in FIG. 1B), and a bar-shaped barrier film facing the vertical direction called a barrier 20 in front of the display module 10. As shown in FIG. 1A, the 3D image display device displays the light corresponding to the left image L only to the left eye, and the light corresponding to the right image R only to the right eye. And the barrier 20, and the left and right images L and R divided through the barriers 20 are separated and observed to feel a three-dimensional effect.

Hereinafter, the stereoscopic image content used in the parallax barrier method described above will be described.

2 is a diagram illustrating a left image and a right image respectively captured by two cameras.

The two cameras or camera modules may capture a left image L as shown in FIG. 2 (1) and a right image R as shown in FIG. 2 (2). As shown in FIG. 2, the left image L and the right image R may be a still image, a moving image, or may correspond to general image contents through respective cameras.

3 is a diagram illustrating an image obtained by synthesizing a left image and a right image photographed using two cameras.

Specifically, the left image and the right image photographed by the two cameras as shown in (1) and (2) of FIG. 2 are input to the stereoscopic image generating means and are respectively divided into vertical columns in the horizontal direction. Alternately placed and synthesized. In this way, the left and right images alternately arranged spatially are viewed as a stereoscopic image by showing only the left image in the left eye and the right image in the right eye through the display module using the parallax barrier as shown in FIGS. 1A and 1B. .

In the conventional parallax barrier type stereoscopic image display module, as illustrated in FIGS. 1A and 1B, only a stereoscopic image synthesized by splitting a left image and a right image into vertical columns and arranging them in a horizontal direction is used. Recognition as stereoscopic images was possible. However, according to the "cell structure parallax barrier and the stereoscopic image display apparatus using the same (patent application No. 2005-0127631) filed by the present inventor and filed by the present applicant, the parallax barrier described above is a cell type. Therefore, in the case of synthesizing a stereoscopic image, the direction of the synthesis need not be limited to any one direction, and the synthesizing the stereoscopic image and displaying the same. The stereoscopic image can be displayed by adjusting the barrier direction of the parallax barrier type display module.

On the other hand, in the conventional TFT-LCD, R, G, and B are divided into three parts in the male direction and displayed.

4 is a cross-sectional view of displaying each pixel in units of a subpixel in a stereoscopic image display apparatus using a parallax-barrier according to the related art.

FIG. 5 is a cross-sectional view illustrating a situation in which respective pixels incident to the left and right eyes are incident through the stereoscopic image display apparatus using the parallax-barrier of FIG. 4.

4 and 5, a pixel for displaying an image for the left side is composed of respective subpixels for displaying R, G, and B, and a pixel for displaying an image for the right side is also R, G, and B. It can be seen that each of the subpixels for display.

However, in FIGS. 4 and 5, the distance between the barriers may be configured such that a viewing angle is secured for each of the left eye cell and the right eye pixel composed of three subpixels as shown in FIG. 1A. That is, since the inter-barrier interval corresponds to one pixel, the viewer's left eye can see the subpixels R, G, and B of the left image L through the interval, and the viewer's right eye sees the right image through the interval. The subpixels R, G, and B of (R) can be seen.

Meanwhile, with the recent development of technology in the display field, the display panel can display an image with a high pixel more than twice as high as in the past.

FIG. 6 is a front view showing each pixel in units of subpixels when a pixel of a display module is doubled in a stereoscopic image display device using a parallax-barrier according to the related art.

FIG. 7 is a cross-sectional view illustrating a situation in which each pixel incident to the left eye and the right eye enters through the stereoscopic image display apparatus using the parallax-barrier of FIG. 6.

6 and 7, as in FIG. 4, a pixel for displaying an image for the left side is composed of respective subpixels for displaying R, G, and B, and a pixel for displaying an image for the right side is also R, It consists of each subpixel for displaying G and B. In addition, since the interval between barriers corresponds to one pixel, the viewer's left eye can see the subpixels R, G, and B of the left image L through the interval, and the viewer's right eye can see the right image ( The subpixels R, G, and B of R) can be seen.

However, the thickness and spacing of the barrier are determined according to the thickness and viewing distance of the flat panel display panel and the dot pitch of the cell. As the resolution increases, the dot pitch of the cell is reduced as shown in FIGS. 4 and 5, and thus the spacing between the barriers is also reduced. If the distance between the barriers is reduced, not only product design difficulties but also narrow viewing angles occur. Specifically, even if the viewer moves only slightly from the original viewing position, the 3D effect is reduced.

In addition, as described above, one pixel is composed of three subpixels of R, G, and B, and in the case of arranging the left image pixel and the right image pixel alternately one by one as in the prior art, the color depends on the viewing angle. Color shift may occur. In other words, R, G, and B subpixels are not all visible in one of the left image and the right image, but one or more of the three subpixels may be invisible depending on the position and spacing of the barrier and the viewing angle of the viewer. have. In this case, color shift may occur.

Accordingly, the present invention is to propose a stereoscopic image display device as shown in FIG. 6 to solve the above problems.

8 is a front view of a stereoscopic image display apparatus using a parallax barrier according to an exemplary embodiment of the present invention.

First, in the embodiment of the present invention, instead of synthesizing each of the left image and the right image of FIG. 2 by one pixel unit as shown in FIG. 3, it is proposed to alternately synthesize the plurality of pixel units.

That is, as shown in FIG. 8, the pixels L for the left image and the pixels R for the right image are not alternately configured, but the pixels L for the predetermined number of left images and the predetermined number of the right images are not alternately configured. The pixels R for the image are alternately arranged. FIG. 8 illustrates a case in which pixels L for two left images and pixels R for two right images are alternately arranged.

Next, in the embodiment of the present invention, the barrier interval is also configured to correspond to a predetermined number of pixels. As described above, the thickness and spacing of the barrier are determined according to the dot pitch of one pixel, but the present invention proposes to determine it according to a predetermined number of pixel dot pitches.

FIG. 9 is a cross-sectional view illustrating a situation in which each pixel incident to the left eye and the right eye is incident through the stereoscopic image display apparatus using the parallax-barrier according to the exemplary embodiment of FIG. 8.

Referring to FIGS. 8 and 9, it can be seen that the viewing angle is increased by arranging the inter-barrier spacing to correspond to two pixels as the pixels are doubled. As a result, the viewer's left eye can see the subpixels R, G and B of the two left images L through the interval, and the viewer's right eye can see the subpixels R of the two right images R through the interval. You can see G, B.

In addition, color shift may be minimized by alternately arranging pixels L for two left images and pixels R for two right images.

FIG. 10 illustrates two pixels viewed through the left eye using a stereoscopic image display device using a parallax-barrier according to an embodiment of the present invention. In particular, FIG. 10 assumes that the viewer's position moves to the left in the situation as shown in FIG. 9.

Referring to FIG. 10, the viewer's left eye can see only the G and B of the first pixel L1 and the second left image pixel L2 can see only the R, G and B. In this case, if only one pixel is visible to the left eye as in the prior art, color shift occurs as only G and B are incident.

However, if two pixels are visible to the left eye as in the present invention, color shift may be minimized due to R of the second left image pixel L2. This is because the first left image pixel L1 and the second left image pixel L2 generally display similar colors instead of sudden color changes.

FIG. 11 illustrates two pixels visible through the right eye using a stereoscopic image display device using a parallax-barrier according to an embodiment of the present invention. In particular, FIG. 11 assumes a case in which the viewer's position moves to the right in the situation as shown in FIG. 9.

Referring to FIG. 10, the left eye of the viewer may see only R and G of the first pixel R1 among the two right image pixels, and the second right image pixel R2 may see only R, G and B. In this case, if only one pixel can see the right eye as in the related art, color shift occurs as only R and G are incident. However, if two pixels are visible to the right eye as in the present invention, color shift may be minimized due to B of the second right image pixel R2.

As described above, according to the exemplary embodiment of the present invention, even when the pixel dot pitch decreases as the resolution increases, a stereoscopic image display device capable of securing a viewing angle and minimizing color shift can be provided.

In the above-described embodiments, the barrier module may be set to turn on the barrier in the 3D display mode and to turn off the barrier in the 2D display mode so that one stereoscopic image display device may be used for 2D / 3D. have. In addition, in the above-described embodiments, it is assumed that the stereoscopic image display apparatus is any one of a monitor and a TV. However, the stereoscopic image display apparatus may be applied to various imaging apparatuses as long as the concept of the present invention described above can be applied.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The foregoing description of the preferred embodiments of the present invention has been presented for those skilled in the art to make and use the invention. Although the above has been described with reference to the preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. I can understand that you can.

Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

10: display module 20: parallax barrier

Claims (7)

A display module in which first type pixels and second type pixels capable of displaying the first direction image and the second direction image, respectively, are repeatedly arranged in a predetermined number unit; And
The barrier pattern may be spaced apart from the display module by a predetermined distance, and arranged such that the first type pixel and the second type pixel are selectively visible in the horizontal direction in units of the predetermined number of pixels in the left and right eyes of the viewer. A barrier module for controlling driving,
At least one barrier type interval corresponds to first type pixels arranged at least two consecutively and a second type pixel arranged at least two consecutively adjacent to the first type pixels,
At least two first type pixels are arranged in the left eye of the viewer through one interval of the barrier pattern. And the second type pixels are incident. delete The method of claim 1,
The display module includes:
At least two consecutively arranged first type pixels and at least two or more consecutively arranged second type pixels are arranged repeatedly,
Stereoscopic image display device. The method of claim 3, wherein
The barrier pattern is,
Characterized in that arranged in the vertical direction every two pixels,
Stereoscopic image display device. delete The method of claim 1,
The preset number is
Characterized in that it increases in proportion to the resolution of the display module,
Stereoscopic image display device. delete

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