KR101590770B1 - Directional display apparatus without color moire and method thereof - Google Patents

Directional display apparatus without color moire and method thereof Download PDF

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Publication number
KR101590770B1
KR101590770B1 KR1020090044012A KR20090044012A KR101590770B1 KR 101590770 B1 KR101590770 B1 KR 101590770B1 KR 1020090044012 A KR1020090044012 A KR 1020090044012A KR 20090044012 A KR20090044012 A KR 20090044012A KR 101590770 B1 KR101590770 B1 KR 101590770B1
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KR
South Korea
Prior art keywords
color
lenticular lens
filter array
subpixels
color filter
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KR1020090044012A
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Korean (ko)
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KR20100125021A (en
Inventor
성기영
남동경
김윤태
박주용
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삼성전자주식회사
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Publication of KR20100125021A publication Critical patent/KR20100125021A/en
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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
    • H04N13/324Colour aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/04Picture signal generators
    • H04N9/045Picture signal generators using solid-state devices
    • H04N9/0455Colour filter architecture

Abstract

A color moiré-less directional display device and method are disclosed. A color moiré-less directional display device can produce a color moiré-free three-dimensional image by implementing a filter of a color filter array such that the unit lenticular lens emits a single color and matches the slope of the lenticular lens.
Color moiré, directional display, lenticular lens, color filter array, view image

Description

TECHNICAL FIELD [0001] The present invention relates to a colorless moireless directional display device and method,

Embodiments of the present invention relate to a color moireless directional display device and method, and more particularly to a technique for controlling the color of directional light emitted from a unit lenticular lens and the pixel structure of a color filter array to generate a color moiréless three-dimensional image will be.

In the case of using a lenticular lens in a multi-view three-dimensional display, 3D view regions may be restricted because each viewpoint image converges at an optimum viewing distance to form respective viewpoint images.

In the case of a directional display, since a 3D stereoscopic image is formed in space by a combination of directional rays of an object at a viewpoint, a 3D viewing area is wide and a motion parallax is more natural. Can be implemented.

Since a multi-view three-dimensional display using a conventional lenticular lens uses a color filter array structure of a stripe pattern, when a viewer watches a three-dimensional stereoscopic image while moving in a horizontal direction, a color moiré (Color Moire) occurs, which can hinder 3D image quality.

Therefore, a directional display device and a method in which color moiré does not occur are required.

A directional display device according to an embodiment of the present invention includes a lenticular lens array in which one or more unit lenticular lenses are continuously arranged and a color filter array in which sub-pixels of the same color are arranged consecutively for a predetermined number of viewpoint images , The subpixels of the color filter array corresponding to each of the one or more unit lenticular lenses may be configured in one color.

At this time, the color filter array may be formed by arranging sub-pixels of the same color on an optical axis extension line of the lenticular lens.

The color filter array may be formed by sequentially arranging the sub-pixels of the same color in the row direction corresponding to the width of the unit lenticular lens.

The color filter array may be formed by periodically arranging a plurality of color subpixels along an optical axis extension line of the lenticular lens.

In addition, the color filter array can display one view image using one subpixel.

A directional display device according to another embodiment of the present invention includes a lenticular lens array composed of one or more unit lenticular lenses, a sub-pixel of a red, green, and blue color, And a slope determining unit that determines a slope of the lenticular lens array so that each view image is formed in one color.

At this time, in the variable scattering screen section, the color filter array may be periodically arranged with a plurality of red color subpixels arranged successively, green color subpixels arranged consecutively, and red color subpixels arranged consecutively .

The tilt determining unit may determine the tilt so that the colors of the view image existing on the optical axis of the at least one unit lenticular lens are the same.

A directional display method according to an embodiment of the present invention includes the steps of continuously arranging one or more unit lenticular lenses and sequentially arranging the same color subpixels on the color filter array as many as predetermined number of viewpoint images And the subpixels of the color filter array corresponding to each of the one or more unit lenticular lenses may be configured in one color.

A directional display method according to another embodiment of the present invention includes the steps of sequentially arranging one or more unit lenticular lenses, forming red, green, and blue color sub- In a row direction, and determining the slope of the lenticular lens array so that each view image is formed in one color.

According to the embodiment of the present invention, the directional light emitted from the unit lenticular lens is made the same color, and the pixel structure of the color filter array is controlled according to the slope of the lenticular lens, Acts may be provided.

According to an embodiment of the present invention, a high resolution directional display device and method can be provided by allowing one subpixel of the color filter array to represent one view.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. Like reference symbols in the drawings denote like elements. The subpixels shown in the respective figures show the ground pattern differently according to the color. Thus, the same ground tint subpixels represent the same color.

1 is a view for explaining a color moiré generated in a lenticular lens and a color filter array in a stripe form.

1, when the color filter array 110 of the LCD is a stripe pattern, the color filter array 110 has the same color in the column direction and has R, G , B colors may be periodically arranged. The lenticular lens 120 diverges the pixel information 111, 112, 113, 114, 115, and 116 in different directions according to the positions of the underlying LCD pixels. The R, G, So that color moiré may occur. At this time, the color moiré not only degrades the 3D image quality, but also causes visual fatigue.

FIG. 2 is a view for explaining a structure of a directional display device and three-dimensional pixel rendering according to a first embodiment of the present invention.

Referring to FIG. 2, one subpixel can represent one viewpoint image, unlike the conventional method in which three subpixels 211, 212, and 213 form one viewpoint image.

Fig. 2 shows an embodiment of the structure of a color filter constituting a 3D pixel. At this time, since the color filters 210, 220, 230 below the unit lenticular lens constituting the lenticular lens array are composed of a single color, the directional light passing through the lenticular lens is a single color. Therefore, color moiré is not generated by the color filter structure. Further, when patterning the color filter with a shape (tilt angle and width) similar to that of the lenticular lens array, there is no restriction on the tilt angle of the lenticular lens and the number of view images to be realized. For example, directional light of the same color can be generated by arranging subpixels of the same color on the extension line of the optical axis 240 of the lenticular lens, and there is no restriction on the number of viewpoint images to be implemented.

In addition, since each subpixel implements a 3D image through rendering of a viewpoint, high resolution 3D representation may be possible. The color 3D parallax images can be viewed without color separation by the combination of neighboring directional lights even if the directional lights emitted by the unit lenticular lenses by the subpixel viewpoint rendering are of a single color. That is, as the number of directional lights increases, the difference in the view image information between neighboring directional light is small, so that a color 3D parallax image can be realized by rendering the subpixel viewpoint.

FIG. 3 is a view showing a directional light of the directional display device shown in FIG. 2 being diverged. FIG.

Referring to FIG. 3, all of the directional lights 331 emitted by the unit lenticular lenses 320 constituting the lenticular lens array may be all of a single color. Therefore, when the directional lights 331 diverging from the first unit lenticular lens are red, the directional lights 332 emitted from the second unit lenticular lens and the directional lights 333 emitted from the third unit lenticular lens are colored May be green color and blue color. For example, when the pixel array of the color filter array 310 is arranged such that the same color is positioned on the extension line of the optical axis of the lenticular lens, the directional lights emitted from the unit lenticular lens may have the same color.

4 is a view for explaining a structure of a directional display device and three-dimensional pixel rendering according to a second embodiment of the present invention.

Referring to FIG. 4, a color moiré-free directional display can be implemented using a stripe color filter structure widely used in conventional 2D displays. By adjusting the tilt angle of the lenticular lens and performing 3D pixel rendering, each view image can be formed into a single color of one of R, G, and B. At this time, by adjusting the tilt angle of the lenticular lens, the points existing on the optical axis 440 of the lenticular lens can be composed of subpixels 441 and 442 of the same color.

FIG. 5 is a view showing the direction in which the directional light of the directional display device shown in FIG. 4 is emitted.

Referring to FIG. 5, pixels of the same color may be arranged along the direction of the directional light so that R, G, and B colors are diverged in a stripe form. That is, the directional lights 531, 532, and 533 emitted from the unit lenticular lens 520 can alternately output R, G, and B colors.

FIG. 6 is a view for explaining a structure of a directional display device and three-dimensional pixel rendering according to a third embodiment of the present invention.

Referring to FIG. 6, pixels of the same color may not be disposed along the optical axis 640 of the lenticular lens. In other words, similar to the conventional stripe color filter structure, unlike the conventional stripe color filter structure formed by one subpixel unit, several subpixels can be continuously arranged in FIG. For example, a plurality of red color subpixels are continuously arranged (610), a plurality of green color subpixels are continuously arranged (620), and again a plurality of blue color subpixels are sequentially arranged (630) .

FIG. 7 illustrates a structure of a directional display device and three-dimensional pixel rendering according to a fourth embodiment of the present invention.

Referring to FIG. 7, unlike the conventional mosaic pattern color filter structure, which is similar to a color filter structure of a mosaic pattern, however, in FIG. 7, a plurality of subpixels are continuously formed . Thus, looking in the horizontal direction, subpixels of the first color are arranged 710 continuously, subpixels of the second color are arranged 720 continuously, and again subpixels of the third color are arranged 730). Also, subpixels of different colors may be arranged (740, 750) in the vertical direction.

8 is a flowchart illustrating a directional display method according to an embodiment of the present invention.

Referring to FIG. 8, in step 810, one or more unit lenticular lenses may be successively arranged. At this time, the subpixels of the color filter array corresponding to each of the one or more unit lenticular lenses may be configured in one color.

In step 820, subpixels of the same color on the color filter array can be arranged consecutively as many as predetermined number of viewpoint images. Here, the color filter array may represent one view image using one subpixel. Accordingly, it is possible to output a high resolution image as compared with a single view image using a plurality of subpixels.

At this time, sub-pixels of the same color may be arranged along the optical axis extension line of the lenticular lens on the color filter array. That is, the sub-pixels of the same color can be arranged along the optical axis extension line of the lenticular lens in consideration of the inclination angle of the optical axis of the lenticular lens.

In addition, the sub-pixels of the same color can be continuously arranged in the row direction corresponding to the width of the unit lenticular lens. At this time, subpixels of the same color can be successively arranged corresponding to the width of the unit lenticular lens. Therefore, all the colors of the directional light emitted from the unit lenticular lens can be made the same.

In addition, a plurality of color subpixels may be periodically arranged along the optical axis extension line of the lenticular lens on the color filter array. For example, when arranging the colors of the subpixels along the optical axis of the lenticular lens, the first number of pixels may be arranged in the same color, and the pixels of the second color may be subsequently arranged in another color.

9 is a flowchart illustrating a directional display method according to another embodiment of the present invention.

Referring to FIG. 9, in step 910, one or more unit lenticular lenses may be successively arranged.

In step 920, subpixels of red, green, and blue colors may be periodically arranged in the row direction on the color filter array. At this time, a plurality of red color subpixels successively arranged, a green color subpixel successively arranged, and a red color subpixel successively arranged may be periodically arranged, respectively. For example, five red color subpixels are placed, followed by five green color subpixels, followed by five blue color subpixels, then five red pixels, five green pixels, five Blue pixels may be repeatedly arranged.

In step 930, the slope of the lenticular lens array may be determined such that each viewpoint image is formed in one color. At this time, the slope can be determined so that the color of the view image existing on the optical axis of the at least one unit lenticular lens is the same.

As described above, it is possible to provide a directional display device and a method in which color moiré is not generated by controlling the pixel structure of the color filter array in accordance with the tilt of the lenticular lens by making the color of the directional light emitted from the lenticular lens the same.

Further, by allowing one subpixel of the color filter array to represent one view, it is possible to provide a high-resolution directional display apparatus and method.

The color moireless directional display method according to an embodiment of the present invention can be implemented in the form of a program command that can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and configured for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. Various modifications and variations are possible in light of the above teachings. Accordingly, it is to be understood that one embodiment of the present invention should be understood only by the appended claims, and all equivalent or equivalent variations thereof are included in the scope of the present invention.

1 is a view for explaining a color moiré generated in a lenticular lens and a color filter array in a stripe form.

FIG. 2 is a view for explaining a structure of a directional display device and three-dimensional pixel rendering according to a first embodiment of the present invention.

FIG. 3 is a view showing a directional light of the directional display device shown in FIG. 2 being diverged. FIG.

4 is a view for explaining a structure of a directional display device and three-dimensional pixel rendering according to a second embodiment of the present invention.

FIG. 5 is a view showing a directional light of the directional display device shown in FIG. 4 being diverged. FIG.

FIG. 6 is a view for explaining a structure of a directional display device and three-dimensional pixel rendering according to a third embodiment of the present invention.

FIG. 7 illustrates a structure of a directional display device and three-dimensional pixel rendering according to a fourth embodiment of the present invention.

8 is a flowchart illustrating a directional display method according to an embodiment of the present invention.

9 is a flowchart illustrating a directional display method according to another embodiment of the present invention.

Claims (17)

  1. A lenticular lens array in which one or more unit lenticular lenses are continuously arranged; And
    The subpixels of the same color are arranged consecutively for a predetermined number of viewpoint images, and the color filter array arranged on the rear surface of the lenticular lens array
    Lt; / RTI >
    The sub-pixels of the same color are arranged in a direction parallel to an optical axis extension line of the unit lenticular lens for each unit lenticular lens or in a row direction of the color filter array for each unit lenticular lens so that the unit lenticular lens of the lenticular lens array emits a single color. Of the display device.
  2. The method according to claim 1,
    The color filter array includes:
    And the sub-pixels of the same color are continuously arranged along a direction parallel to the optical axis extension line of the lenticular lens.
  3. The method according to claim 1,
    The color filter array includes:
    And the sub-pixels of the same color are continuously arranged in a row direction corresponding to the width of the unit lenticular lens.
  4. The method according to claim 1,
    The color filter array includes:
    Wherein a plurality of color subpixels are periodically arranged along a direction parallel to an optical axis of the lenticular lens, and subpixels of the same color are continuously arranged in one period.
  5. The method according to claim 1,
    The color filter array includes:
    Wherein one viewpoint image is expressed using one subpixel.
  6. A lenticular lens array composed of at least one unit lenticular lens;
    A color filter array in which subpixels of red, green, and blue colors are periodically arranged in a row direction; And
    A tilt determining unit for determining the tilt of the lenticular lens array so that each viewpoint image is formed into one color,
    Lt; / RTI >
    The tilt determining unit may determine,
    Wherein the unit lenticular lens determines the slope so that each viewpoint image forms only one of a plurality of colors of the color filter array.
  7. The method according to claim 6,
    The color filter array includes:
    A plurality of red color subpixels arranged in succession, a plurality of green color subpixels arranged successively, and a plurality of blue color subpixels arranged successively are periodically arranged.
  8. The method according to claim 6,
    The tilt determining unit may determine,
    Wherein the tilt is determined so that the color of the viewpoint image existing on the optical axis of the at least one unit lenticular lens is the same.
  9. Sequentially arranging one or more unit lenticular lenses; And
    Arranging subpixels of the same color on the color filter array consecutively as many as predetermined number of viewpoint images
    Lt; / RTI >
    The sub-pixels of the same color are continuously arranged in the direction parallel to the optical axis extension line of the unit lenticular lens or along the row direction of the color filter array for each unit lenticular lens so that the unit lenticular lens emits a single color. / RTI >
  10. 10. The method of claim 9,
    Wherein the disposing comprises:
    Wherein the sub-pixels of the same color are continuously arranged in the direction parallel to the optical axis extension line of the lenticular lens on the color filter array.
  11. 10. The method of claim 9,
    Wherein the disposing comprises:
    Wherein the sub-pixels of the same color are arranged continuously in a row direction corresponding to the width of the unit lenticular lens.
  12. 10. The method of claim 9,
    Wherein the disposing comprises:
    Wherein a plurality of color subpixels are periodically arranged along a direction parallel to an optical axis extension line of the lenticular lens on the color filter array and the subpixels of the same color are successively arranged in one period .
  13. 10. The method of claim 9,
    The color filter array includes:
    Wherein one viewpoint image is expressed using one subpixel.
  14. Sequentially arranging one or more unit lenticular lenses;
    Periodically arranging subpixels of red, green, and blue colors in a row direction on a color filter array; And
    Determining a slope of the lenticular lens array
    Lt; / RTI >
    Wherein the step of determining the slope comprises:
    Wherein the unit lenticular lens determines the slope such that each viewpoint image is formed of only one of a plurality of colors of the color filter array.
  15. 15. The method of claim 14,
    Wherein the disposing comprises:
    A plurality of red color subpixels arranged in succession, a plurality of green color subpixels arranged in succession, and a plurality of continuously arranged blue color subpixels are periodically arranged.
  16. 15. The method of claim 14,
    Wherein the determining comprises:
    Wherein the slope is determined so that the color of the view image existing on the optical axis of the at least one unit lenticular lens is the same.
  17. A computer-readable recording medium having recorded thereon a program for executing the method according to any one of claims 9 to 16.
KR1020090044012A 2009-05-20 2009-05-20 Directional display apparatus without color moire and method thereof KR101590770B1 (en)

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KR1020090044012A KR101590770B1 (en) 2009-05-20 2009-05-20 Directional display apparatus without color moire and method thereof

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KR101590770B1 true KR101590770B1 (en) 2016-02-02

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KR20130055997A (en) 2011-11-21 2013-05-29 삼성디스플레이 주식회사 3-dimensional image display device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004118140A (en) * 2002-09-30 2004-04-15 Nippon Hoso Kyokai <Nhk> Stereoscopic video display device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004118140A (en) * 2002-09-30 2004-04-15 Nippon Hoso Kyokai <Nhk> Stereoscopic video display device

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