JP2009048133A - Stereoscopic display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stereoscopic display capable of reducing a display-directional shift in every display color, and capable of restraining a repetition image from being generated. <P>SOLUTION: This stereoscopic display 1 is provided with a two-dimensional display 10 having a plurality of pixels 17 arrayed matrix-likely, and a lenticular sheet 20 provided on the two-dimensional display 10, and having a plurality of cylindrical lenses 21 extended along a prescribed direction. Each of the plurality of pixels 17 is provided with a plurality of color pixels 17R, 17G, 17B for displaying single colors different each other, and the color pixels 17R, 17G, 17B are arranged along respective column directions in the respective pixels 17. The fellow pixels displaying the same color in the pixels 17 adjacent each other along a line direction are arranged in different lines with no break each other along the line direction. A light shielding part 17X is provided between the fellow pixels adjacent each other, out of the plurality of color pixels 17R, 17G, 17B, and a line-directional width of the light shielding part 17X is set to any of three kinds. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a stereoscopic display device. Specifically, the present invention relates to a stereoscopic display device including a lenticular sheet.

Conventionally, there is a stereoscopic display device that displays a three-dimensional image.
FIG. 3 is a diagram illustrating a configuration of a stereoscopic display device 100 according to a conventional example. The stereoscopic display device 100 displays a three-dimensional image by a so-called multi-view stereoscopic display method or a directional stereoscopic display method, and includes a two-dimensional display 110 and a lenticular sheet 120 provided on the two-dimensional display 110. And comprising.

The two-dimensional display 110 is provided on the outside of two glass substrates 111 and 112 provided opposite to each other, a liquid crystal layer 113 sandwiched between the two glass substrates 111 and 112, and the two glass substrates 111 and 112. The liquid crystal display includes two polarizing plates 114 and 115.
The two-dimensional display 110 is provided with a plurality of pixels 117 arranged in a matrix. The pixel 117 includes a color pixel 117R for displaying red (R), a color pixel 117G for displaying green (G), and a color pixel 117B for displaying blue (B). A light shielding portion 117X is provided between the color pixels 117R, 117G, and 117B adjacent to each other.

  The lenticular sheet 120 is a sheet in which a large number of cylindrical lenses 121 that are one-dimensional lenses are arranged in a direction substantially orthogonal to the lens central axis. One cylindrical lens 121 corresponds to a plurality of pixels 117 adjacent to each other in the row direction, that is, in the horizontal direction.

  For this reason, when the above-described stereoscopic display device 100 is a multi-view stereoscopic display system, a three-dimensional image can be displayed by setting a plurality of viewpoints in the horizontal direction of the space and displaying different images at the respective viewpoints. On the other hand, when the above-described stereoscopic display device 100 is a directional stereoscopic display system, a large number of images can be displayed simultaneously in different horizontal directions to display a three-dimensional image.

  By the way, the above-described light shielding portion 117X is provided in order to prevent light leakage between adjacent color pixels and improve contrast. However, since the light-shielding portion 117X creates a region where light is not emitted, the above-described stereoscopic display device 100 may have uneven light intensity in the horizontal direction.

Therefore, as shown in FIG. 4, a stereoscopic display device has been proposed in which color pixels for displaying the same color of pixels adjacent to each other in the horizontal direction among the plurality of pixels 117 are arranged in the horizontal direction without any breaks. (For example, refer to Patent Document 1). According to this stereoscopic display device, since the color pixels for displaying the same color are arranged without any break in the horizontal direction, it is possible to prevent the occurrence of uneven light intensity in the horizontal direction.
JP 2005-316372 A

  By the way, in FIG. 4, the width in the row direction of the light shielding portion 117X is constant. In addition, 12 × 4 color pixels in the row direction and 4 × 4 color pixels in the column direction and one cylindrical lens 121 corresponding to a plurality of pixels having these color pixels constitute one three-dimensional pixel. is doing.

  Here, for example, when attention is paid to the pixel 117 including the color pixels R01, B01, and G01, the horizontal positions of these color pixels do not match. That is, since the horizontal positions of the color pixels 117R, 117B, and 117G included in each pixel 117 do not match, the display direction may be shifted for each display color. If the number of color pixels in the column direction included in the three-dimensional pixel is N (N is an integer satisfying N ≧ 1), such a problem occurs when N is not a multiple of 3.

For example, when attention is paid to the color pixel 117T and the color pixel 117U, these are located over the area of the two cylindrical lenses 121 adjacent to each other.
Thus, one color pixel may be located over the area of two cylindrical lenses. In some cases, the light rays emitted from the color pixels diffuse and enter the adjacent cylindrical lens among the plurality of cylindrical lenses. For this reason, there is a possibility that a repeated image which is a side lobe of stereoscopic display is generated.

  An object of the present invention is to provide a stereoscopic display device that can reduce the shift in display direction for each display color and can suppress the occurrence of repeated images.

  The stereoscopic display device of the present invention is provided on a display unit (for example, the two-dimensional display 10 of the embodiment) having a plurality of pixels (for example, the pixel 17 of the embodiment) arranged in a matrix and on the display unit. A lenticular sheet (for example, the lenticular sheet 20 of the embodiment) having a plurality of cylindrical lenses (for example, the cylindrical lens 21 of the embodiment) extending in a predetermined direction, the plurality of pixels Each includes a plurality of color pixels (for example, color pixels 17R, 17G, and 17B in the embodiment) that display different single colors, and the plurality of color pixels are arranged in a column direction for each of the pixels, Color pixels that display the same color of pixels adjacent to each other in the row direction among a plurality of pixels are separated from each other in different rows and in the row direction. A light-shielding part (for example, the light-shielding part 17X of the embodiment) is provided between adjacent color pixels among the plurality of color pixels, and the width in the row direction of the light-shielding part is at least 2 It is characterized by more than one type.

According to this invention, the width of the light shielding portion in the row direction is set to at least two kinds.
For this reason, by increasing or decreasing the width in the row direction of the light shielding portion in the vicinity of the end portion of the cylindrical lens region as compared with the width in the row direction of the other light shielding portions, one color pixel becomes 2 pixels. A plurality of cylindrical lenses, and a light beam emitted from a color pixel is prevented from being incident on a neighboring one of the plurality of cylindrical lenses. Can be suppressed.
On the other hand, by reducing the width in the row direction of the other light-shielding portions described above within a range in which light leakage between adjacent color pixels can be prevented, a plurality of pixels that display different single colors included in each pixel are displayed. Since the shift in the position of the color pixel in the row direction can be reduced, the shift in the display direction for each display color can be reduced.

  In this case, each of the cylindrical lenses is provided corresponding to a plurality of pixels adjacent to each other in the row direction among the plurality of pixels, and each of the plurality of pixels corresponding to each of the cylindrical lenses includes the plurality of pixels. It is preferable that the horizontal pitch of the color pixels displaying the same color is constant.

When the horizontal pitch of the color pixels that display the same color is not constant, there is a possibility that uneven light intensity occurs in the horizontal direction for each color.
Therefore, according to the present invention, for each of a plurality of pixels corresponding to each cylindrical lens, the horizontal pitch of the color pixels displaying the same color included in the plurality of pixels is set to be constant. For this reason, it is possible to suppress the occurrence of uneven light intensity for each color in the horizontal direction.

According to the present invention, the width of the light shielding portion in the row direction is set to at least two kinds.
For this reason, by increasing or decreasing the width in the row direction of the light shielding portion in the vicinity of the end portion of the cylindrical lens region as compared with the width in the row direction of the other light shielding portions, one color pixel becomes 2 pixels. A plurality of cylindrical lenses, and a light beam emitted from a color pixel is prevented from being incident on a neighboring one of the plurality of cylindrical lenses. Can be suppressed.
On the other hand, by reducing the width in the row direction of the other light-shielding portions described above within a range in which light leakage between adjacent color pixels can be prevented, a plurality of pixels that display different single colors included in each pixel are displayed. Since the shift in the position of the color pixel in the row direction can be reduced, the shift in the display direction for each display color can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description of the embodiments, the same constituent elements are denoted by the same reference numerals, and the description thereof is omitted or simplified.

[First Embodiment]
FIG. 1 is a schematic diagram illustrating an arrangement of color pixels of the stereoscopic display device 1 according to the first embodiment of the present invention. The stereoscopic display device 1 includes a two-dimensional display 10 and a lenticular sheet 20 provided on the two-dimensional display 10.

  The two-dimensional display 10 is provided with a plurality of pixels 17 arranged in a matrix. The pixel 17 includes a rectangular color pixel 17R for displaying red (R), a rectangular color pixel 17G for displaying green (G), and a rectangular color pixel 17B for displaying blue (B). And comprising. A light shielding portion 17X is provided between the color pixels 17R, 17G, and 17B adjacent to each other.

  The lenticular sheet 20 is a sheet in which a large number of cylindrical lenses 21 that are one-dimensional lenses are arranged in a direction substantially orthogonal to the lens central axis. One cylindrical lens 21 corresponds to 16 pixels 17 adjacent in the row direction, that is, in the horizontal direction. In addition, 12 pixels in the row direction and 4 12 × 4 color pixels in the column direction and one cylindrical lens 21 corresponding to a plurality of pixels including these color pixels constitute one three-dimensional pixel. is doing. That is, the number N of color pixels in the column direction included in the three-dimensional pixel is four.

Hereinafter, the arrangement of the color pixels 17R, 17G, and 17B will be described in detail.
The color pixels 17R, 17G, and 17B are arranged in the column direction for each pixel 17. The pixel 17 has four rows: three rows provided with each of these three types of color pixels 17R, 17G, and 17B and one row provided with the above-described light shielding portion 17X.

  For example, when attention is paid to the pixel 17 including the color pixels R09, B09, and G09, the color pixel R09 is provided in the first row, the light shielding portion 17X is provided in the second row, and the color pixel B09 is provided in the third row. The color pixel G09 is provided in the fourth row.

  In addition, the color pixels displaying the same color of the pixels 17 adjacent to each other in the row direction are arranged in different rows in the row direction without any breaks.

For example, when attention is paid to the color pixels R09 and R10 for displaying red (R), the color pixel R09 is provided in the first row. The color pixel R10 is provided in a pixel adjacent to the pixel including the color pixel R09 in the row direction, and is provided in the second row. That is, the color pixel R09 and the color pixel R10 are color pixels that display red (R) as the same color of the pixels 17 adjacent to each other in the row direction, and are arranged in different rows.
Assuming a virtual line extending in the column direction through the right side in FIG. 1 among the four sides of the color pixel R09, the left side in FIG. 1 of the four sides of the color pixel R10 is located on this virtual line. That is, the color pixel R09 and the color pixel R10 are arranged without a break in the row direction.

  There are three types of intervals between color pixels adjacent to each other in the row direction. Specifically, assuming that the color pixels 17R, 17G, and 17B adjacent to each other in the row direction are one color pixel group, the interval between the color pixels adjacent to each other in each color pixel group and the relationship between the color pixel groups adjacent to each other. There are three types, that is, an interval and an interval between color pixels in the vicinity of the end of the cylindrical lens 21 region. For this reason, there are three types of widths in the row direction of the light shielding portions 17X provided between the color pixels adjacent to each other.

  For example, attention is paid to the color pixels R09, G10, and B11, the color pixels R13, G14, and B15, and the color pixels R01, G02, and B03. Here, the color pixels R09, G10, and B11 are set as the first color pixel group, the color pixels R13, G14, and B15 are set as the second color pixel group, and the color pixels R01, G02, and B03 are set as the third color pixel group. To do.

  The interval between adjacent color pixels in each color pixel group is, for example, the interval between the color pixel R09 and the color pixel G10, or the interval between the color pixel G14 and the color pixel B15. This interval is for forming a light shielding portion 17X and preventing light leakage between adjacent color pixels, and is the narrowest among the three types.

On the other hand, the interval between adjacent color pixel groups is, for example, the interval between the color pixel B11 included in the first color pixel group and the color pixel R13 included in the second color pixel group. . This interval is a color pixel that displays the same color of pixels adjacent to each other in the row direction, and the color pixel provided in the first row and the color pixel provided in the fourth row are separated from each other in the row direction. It is for arranging without. Specifically, for example, since there is an interval between the color pixel B11 and the color pixel R13 described above, the color pixel R13 on the first row and the color pixel R12 on the fourth row are arranged without a break in the row direction. ing.
This interval is the second narrowest of the three types.

  Further, the interval between the color pixels in the vicinity of the end portion in the region of the cylindrical lens 21 is, for example, the color pixel B15 included in the second color pixel group and the color pixel R01 included in the third color pixel group. It is the interval. This interval prevents one color pixel from being located over the area of the two cylindrical lenses 21, and the light emitted from the color pixel is adjacent to the corresponding cylindrical lens among the plurality of cylindrical lenses 21. Is the widest of the three types.

  Further, for each of the plurality of pixels 17 corresponding to each cylindrical lens 21, the horizontal pitch of the color pixels displaying the same color included in the plurality of pixels 17 is constant.

  For example, color pixels R01, R05, R09, and R13 for displaying red (R) are provided in a plurality of pixels 17 corresponding to the same cylindrical lens 21, respectively. Between these, a color pixel 17G for displaying green (G), a color pixel 17B for displaying blue (B), and color pixels adjacent to each other in each of the color pixel groups described above. The light shielding portions 17X provided at the intervals between the light shielding portions 17X and the light shielding portions 17X provided at the intervals between the color pixel groups adjacent to each other are disposed. For this reason, the horizontal pitch of the color pixels R01, R05, R09, and R13 is constant.

According to this embodiment, there are the following effects.
(1) Three types of widths in the row direction of the light shielding portion 17X are set.
For this reason, while adjusting the width in the row direction of the light shielding portion 17X near the end of the region of the cylindrical lens 21, it is possible to prevent one color pixel from being positioned over the regions of the two cylindrical lenses 21, and The light emitted from the color pixel can be prevented from entering the adjacent cylindrical lens 21 among the plurality of cylindrical lenses 21, and the occurrence of repeated images can be suppressed.
On the other hand, by narrowing the width in the row direction of the light-shielding portion 17X between adjacent color pixels in each color pixel group within a range in which light leakage between adjacent color pixels can be prevented, Since the displacement in the row direction of the color pixels 17R, 17G, and 17B included in the pixel can be reduced, the displacement in the display direction for each display color can be reduced.

  (2) For each of the plurality of pixels 17 corresponding to each cylindrical lens 21, the horizontal pitch of the color pixels displaying the same color included in the plurality of pixels 17 is set to be constant. For this reason, it is possible to suppress unevenness of light intensity in the horizontal direction for each color of red (R), green (G), and blue (B).

[Second Embodiment]
FIG. 2 is a schematic diagram showing an arrangement of color pixels of the stereoscopic display device 1A according to the second embodiment of the present invention.
In the present embodiment, the arrangement of color pixels is different from that in the first embodiment. Specifically, in the first embodiment, twelve 12 × 4 color pixels in the row direction and four 12 × 4 color pixels in the column direction, and one cylindrical lens 21 corresponding to a plurality of pixels including these color pixels, Thus, one three-dimensional pixel was formed. On the other hand, in the present embodiment, 15 × 5 color pixels in the row direction and 5 × 5 in the column direction, and one cylindrical lens 21 corresponding to a plurality of pixels including these color pixels. One 3D pixel is formed.

According to this embodiment, there are the following effects.
(3) Compared with the first embodiment, the number of color pixels included in the three-dimensional pixel is increased. For this reason, since the number of images that can be simultaneously displayed in different viewpoints or in the horizontal direction by one cylindrical lens 21 increases, a smoother motion parallax and a wider depth display range can be obtained, and an excellent stereoscopic display can be performed. .

  In addition, this invention is not limited to the above-mentioned embodiment, The deformation | transformation in the range which can achieve the objective of this invention, improvement, etc. are included in this invention.

  For example, in the first embodiment, 12 × 4 color pixels are provided in one three-dimensional pixel, and in the second embodiment, 15 × 5 color pixels are provided in one three-dimensional pixel. Not exclusively.

  In each of the above-described embodiments, the color pixel has a rectangular shape. However, the shape is not limited thereto, and may be, for example, a parallelogram or a trapezoid.

It is the schematic which shows arrangement | positioning of the color pixel of the three-dimensional display apparatus which concerns on 1st Embodiment of this invention. It is the schematic which shows arrangement | positioning of the color pixel of the three-dimensional display apparatus which concerns on 2nd Embodiment of this invention. It is a figure which shows the structure of the three-dimensional display apparatus which concerns on a prior art example. It is the schematic which shows arrangement | positioning of the color pixel of the three-dimensional display apparatus which concerns on a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1A, 100 ... Stereoscopic display device 10, 110 ... Two-dimensional display (display part)
17, 117 ... Pixels 17B, 17G, 17R, 117B, 117G, 117R, 117T, 117U ... Color pixels 17X, 117X ... Shading part 20, 120 ... Lenticular sheet 21, 121 ... Cylindrical lens

Claims (2)

A display unit having a plurality of pixels arranged in a matrix;
A lenticular sheet having a plurality of cylindrical lenses provided on the display unit and extending in a predetermined direction, and a stereoscopic display device comprising:
Each of the plurality of pixels includes a plurality of color pixels that display different single colors.
The plurality of color pixels are arranged in a column direction for each pixel,
Color pixels that display the same color of pixels adjacent to each other in the row direction among the plurality of pixels are arranged in different rows in a row direction without any breaks,
A light shielding portion is provided between the color pixels adjacent to each other among the plurality of color pixels,
A three-dimensional display device characterized in that there are at least two kinds of widths in the row direction of the light shielding portions. The stereoscopic display device according to claim 1,
Each cylindrical lens is provided corresponding to a plurality of pixels adjacent to each other in the row direction among the plurality of pixels,
A three-dimensional display device characterized in that, for each of a plurality of pixels corresponding to each of the cylindrical lenses, a horizontal pitch of color pixels for displaying the same color included in the plurality of pixels is constant.

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