KR102039361B1 - Stereoscopic image display device - Google Patents
Stereoscopic image display device Download PDFInfo
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- KR102039361B1 KR102039361B1 KR1020120152587A KR20120152587A KR102039361B1 KR 102039361 B1 KR102039361 B1 KR 102039361B1 KR 1020120152587 A KR1020120152587 A KR 1020120152587A KR 20120152587 A KR20120152587 A KR 20120152587A KR 102039361 B1 KR102039361 B1 KR 102039361B1
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- lenticular lens
- display panel
- view
- subpixel
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Abstract
A stereoscopic image display device capable of reducing a rear distance includes a display panel configured to display a plurality of images; And a view generator disposed on the display panel to generate a plurality of views corresponding to each of the plurality of images. The horizontal length of each view is larger than the binocular spacing of a person.
Description
The present invention relates to a stereoscopic image display device, and more particularly, to a stereoscopic image display device capable of reducing a rear distance.
A stereoscopic (or 3D) image display device is a device that enables a viewer to view stereoscopic images by binocular parallax between the left and right eyes by providing different images to the left and right eyes of the viewer.
In recent years, research has been actively conducted on the glasses-free method without wearing stereoscopic glasses. The autostereoscopic method includes a lenticular method for separating left and right eye images using a cylindrical lens array and a barrier method for separating left and right eye images using a barrier.
FIG. 1 is a view schematically illustrating a general barrier type stereoscopic image display device.
Referring to FIG. 1, a general barrier type stereoscopic image display device includes a
The
FIG. 2 is a diagram schematically illustrating a general lenticular stereoscopic image display device. FIG.
Referring to FIG. 2, a general lenticular stereoscopic image display device is disposed in front of a
The
Specifically, the
In the above-described barrier type and lenticular lens type stereoscopic image display apparatuses, the
In this case, since the thickness and weight of the product may increase according to the back distance S, it is necessary to minimize the back distance S.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and a technical object of the present invention is to provide a stereoscopic image display device capable of minimizing a rear distance between the display panel and the barrier panel 120 or the
In addition to the technical task of the present invention mentioned above, other features and advantages of the present invention will be described below, or from such description and description will be clearly understood by those skilled in the art. In addition, other features and advantages of the present invention may be newly understood through the embodiments of the present invention.
According to an aspect of the present invention, a stereoscopic image display apparatus includes: a display panel configured to display a plurality of images; And a view generator disposed on the display panel to generate a plurality of views corresponding to each of the plurality of images. The horizontal length of the plurality of views is greater than the binocular spacing of a person.
According to another aspect of the present invention, there is provided a stereoscopic image display apparatus comprising: a display panel in which a plurality of subpixels are formed and displaying a plurality of images on the plurality of subpixels; And a view generator that includes a lenticular lens and is disposed on the display panel to generate a plurality of views corresponding to each of the plurality of images. Focal length of the lenticular lens
Smaller than b, wherein b represents a separation distance between the display panel and the view generation unit, E represents a binocular spacing, and P s represents the size of the sub-pixel.According to the present invention, the rear surface distance between the display panel and the barrier panel 120 or the
In addition, the present invention has another effect of reducing the thickness and weight of the product in accordance with the reduction of the rear distance.
In addition, the present invention further reduces the rear distance between the display panel and the barrier panel or the lenticular lens array and simultaneously adjusts the view arrangement on the display panel so that the viewer can watch a stereoscopic image at the same viewing distance as before.
1 is a diagram schematically illustrating a general barrier type stereoscopic image display device.
FIG. 2 is a diagram schematically illustrating a stereoscopic image display apparatus of a general lenticular lens type.
3 is a diagram schematically illustrating a conventional stereoscopic image display device.
4 is a view for explaining a view arrangement disposed on a conventional display panel.
5 is a diagram schematically illustrating a 3D image display device according to an exemplary embodiment.
6 is a diagram for describing a plurality of image arrays disposed on a display panel according to an exemplary embodiment.
7 is a diagram for explaining an arrangement of a lenticular lens.
8 is a view for explaining an example in which the pitch of the lenticular lens is changed.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Hereinafter, for convenience of description, a stereoscopic image display device according to an embodiment of the present invention will be described using a lenticular lens method. However, the present invention is not limited to the lenticular lens type stereoscopic image display device, but may be applied to all the stereoscopic image display devices of the auto glasses type as well as the barrier type stereoscopic image display device.
3 is a diagram schematically illustrating a conventional stereoscopic image display device, and FIG. 4 is a diagram for describing a view arrangement disposed on a conventional display panel.
Referring to FIG. 3, the conventional stereoscopic image display device includes a
In the
The
The
In addition, the
In this case, one lens 232 may be disposed to correspond to the plurality of images displayed on the
On the other hand, the plurality of views are generally formed such that the horizontal length (VD 1 ) and the interval VI 1 between the views are equal to the binocular spacing (E) of the
The present invention aims to reduce the thickness of the stereoscopic image display device by reducing the rear distance S 1 between the
Accordingly, the stereoscopic image display device according to the present invention proposes to reduce the rear distance by using at least one of the curvature radius of the lens, the pitch of the lens, and the view arrangement.
Hereinafter, a stereoscopic image display device according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 5 to 9.
5 is a diagram schematically illustrating a stereoscopic image display device according to an exemplary embodiment.
Referring to FIG. 5, a stereoscopic image display device according to an exemplary embodiment of the present invention includes a
First, the
The
The pixels constituting the
A thin film transistor having a gate electrode, an active layer, a source electrode, and a drain electrode is disposed in an intersection region of the gate line and the data line. Each pixel is filled with a liquid crystal material that is equivalent to the liquid crystal cell, and a storage capacitor is formed to maintain a constant voltage charged in the liquid crystal cell.
The
When the scan signal is supplied from the gate line, the thin film transistor provided in each pixel is turned on to charge the liquid crystal cell with the image signal received through the data line. The image signal charged in the liquid crystal cell of each pixel is held by the storage capacitor for one frame period.
Meanwhile, the
Next, the
Meanwhile, the thickness of the
Next, the
Hereinafter, it will be described on the assumption that the
The
This fact can be seen through
Here, a denotes an appropriate viewing distance, b denotes a distance between the lenticular lens 332 and the
The magnification is determined by the equation (2).
Here, m represents the magnification. If
That is, it can be seen from
Meanwhile, in the stereoscopic image display apparatus, the magnification m is (horizontal length of the view) / (subpixel size), and the general stereoscopic image display apparatus is designed to form the horizontal length of the view by binocular spacing, so that the lenticular lens 332 is used. The focal length of can be summarized by
Here, E denotes binocular spacing, and P s denotes the size of the subpixel.
The stereoscopic image display device according to the present invention is characterized in that the lenticular lens 332 is designed to have a focal length satisfying Equation 5 below.
The stereoscopic image display device according to the present invention is designed so that the horizontal length of the view is larger than the binocular spacing. Accordingly, the stereoscopic image display device according to the exemplary embodiment designs the magnification of the lenticular lens 332 to be larger than the E / P s in order to reduce the focal length of the lenticular lens 332.
By reducing the focal length of the lenticular lens 332 as described above, the stereoscopic image display device according to an embodiment of the present invention reduces the rear distance (S 2 ) between the
In general, the stereoscopic image display device provides the
However, as described above, if only the focal length of the lenticular lens 332 and the back distance S 2 between the
When the view interval VI 2 is larger than the binocular spacing E as described above, the image is not properly provided to at least one of the left eye and the right eye of the
Accordingly, it is necessary to correct the image arrangement displayed on the
FIG. 6 is a diagram for describing a plurality of image arrays disposed on a display panel according to an exemplary embodiment. FIG. 7 is a diagram for describing an arrangement of a lenticular lens.
6 and 7 assume that the rear distance between the display panel and the view generator is reduced by half in the stereoscopic image display device illustrated in FIG. 4. That is, the back distance S 2 shown in FIG. 6 corresponds to 1/2 of the back distance S 1 shown in FIG. 4.
As described above, when the back distance is reduced to 1/2, the view interval is twice as large as that of FIG. 4, that is, 2E.
In the present invention, as shown in FIG. 4, the plurality of images are not sequentially arranged in order to have the binocular spacing E as shown in FIG. 4. Referring to FIG. 6, it is assumed that the
The
As illustrated in FIG. 7, the lenticular lens 332 disposed on the
On the other hand, the
Referring to FIG. 5 again, as illustrated in FIGS. 6 and 7, the plurality of images are arranged diagonally in two or more rows without sequentially arranging a plurality of images on the
However, the horizontal length VD 2 of the plurality of views is still larger than the binocular spacing E. Accordingly, the plurality of views are characterized by overlapping at least some of the adjacent views.
In the above-described exemplary embodiment, the back distance S 2 of the stereoscopic image display device is reduced by increasing the radius of curvature of the lenticular lens 332. In addition, the stereoscopic image display device may further reduce the rear distance S 2 by reducing the pitch P of the lenticular lens 332.
The back distance S may be expressed as in Equation 6.
Here, S denotes the rear distance, P denotes the pitch of the lenticular lens 332, D denotes an appropriate viewing distance, and VD denotes the horizontal length of the view.
In the
In the above-described embodiment, the rear distance S decreases as the horizontal length VD of the view increases. Referring again to the specific example, it is assumed that the 3D image display device according to the exemplary embodiment increases the radius of curvature of the lenticular lens 332 to double the magnification.
When the magnification is doubled, the focal length of the lenticular lens 332 is 1/2, and thus the horizontal length VD of the view is doubled. In this case, the back distance S may be 1/2 as the horizontal length VD of the view is doubled when using Equation 6.
In another exemplary embodiment, the rear distance S may be reduced by changing the pitch P of the lenticular lens 332 as well as the horizontal length VD of the view.
8 is a cross-sectional view for explaining an example in which the pitch of the lenticular lens is changed.
Referring to FIG. 8, it is assumed that the
The
The lenticular lens 332 disposed on the
On the other hand, the
On the other hand, the lenticular lens 332 included in the
According to Equation 6, it can be seen that the back distance S 3 shown in FIG. 8 is 1/2 of the back distance S 2 shown in FIG. 6. In addition, it can be seen that 1/4 of the rear distance (S 1 ) shown in FIG.
Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, it is to be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.
210 and 310:
230, 330: view generating unit S: rear distance
P: Pitch of lenticular lens VD: Horizontal length of view
VI: View Interval D: Proper Viewing Distance
Claims (12)
A view generator including a lenticular lens and disposed on the display panel to generate a plurality of views corresponding to each of the plurality of images; And
A gap forming part formed between the display panel and the view generating part;
The focal length of the lenticular lens satisfies Equation 1 below.
(Equation 1) (In Equation 1, f is the focal length of the lenticular lens, b is the separation distance between the display panel and the view generator, m is the magnification of the lenticular lens)
The magnification of the lenticular lens corresponds to the ratio of the size of the subpixel to the horizontal length of the view,
The horizontal length of each view is greater than the binocular spacing,
By the horizontal length of the view larger than the binocular spacing, the magnification of the lenticular lens is larger than the ratio of the size of the subpixel to the binocular spacing, the focal length of the lenticular lens is reduced as shown in Equation 2 below,
(Equation 2) (Equation 2, f is the focal length of the lenticular lens, b is the separation distance between the display panel and the view generator, E is binocular spacing, P s is the size of the sub-pixel)
According to Equation 1, the separation distance between the display panel and the view generator by the gap forming part is reduced in correspondence to the reduced focal length of the lenticular lens.
The first subpixel displaying the first image and the third subpixel displaying the third image of the plurality of subpixels are repeatedly arranged in a column direction in the first column, and the second subpixel displaying the second image and the second subpixel displaying the second image are arranged. The fourth subpixel displaying the 4 image is repeatedly arranged in the column direction in a second column adjacent to the first column,
The second subpixel is disposed in an oblique direction of the first subpixel,
The lenticular lens is formed extending in the diagonal direction,
The long-axis edge of any one of the lenticular lens is disposed in an oblique direction corresponding to two subpixels arranged adjacent to each other in a row direction among the first to fourth subpixels.
And each of the views overlaps at least a portion of the adjacent views.
And reducing the radius of curvature of the lenticular lens or the pitch of the lenticular lens so that the magnification of the lenticular lens is increased.
And a magnification of the lenticular lens is doubled.
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Citations (2)
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JP2006287592A (en) * | 2005-03-31 | 2006-10-19 | Namco Bandai Games Inc | Image generating device, electronic equipment, and image generation method and program |
JP2011164637A (en) * | 2003-11-06 | 2011-08-25 | Nec Lcd Technologies Ltd | Three-dimensional image display device and display panel |
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JP2011164637A (en) * | 2003-11-06 | 2011-08-25 | Nec Lcd Technologies Ltd | Three-dimensional image display device and display panel |
JP2006287592A (en) * | 2005-03-31 | 2006-10-19 | Namco Bandai Games Inc | Image generating device, electronic equipment, and image generation method and program |
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