WO2015030330A1 - Dispositif d'affichage d'image stéréoscopique sans lunettes - Google Patents

Dispositif d'affichage d'image stéréoscopique sans lunettes Download PDF

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Publication number
WO2015030330A1
WO2015030330A1 PCT/KR2014/001975 KR2014001975W WO2015030330A1 WO 2015030330 A1 WO2015030330 A1 WO 2015030330A1 KR 2014001975 W KR2014001975 W KR 2014001975W WO 2015030330 A1 WO2015030330 A1 WO 2015030330A1
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Prior art keywords
image
lens
liquid crystal
eye image
unit
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PCT/KR2014/001975
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English (en)
Korean (ko)
Inventor
이영훈
이규민
홍신아
Original Assignee
한화첨단소재 주식회사
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Publication of WO2015030330A1 publication Critical patent/WO2015030330A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/305—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using lenticular lenses, e.g. arrangements of cylindrical lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays

Definitions

  • the present invention relates to an apparatus for displaying a stereoscopic image in an autostereoscopic manner, and more particularly, when two or more persons watch a stereoscopic image, an abnormal region such as reverse phase, 2D, and black may not be generated, thereby improving multidimensional image.
  • the present invention relates to an autostereoscopic 3D display device for viewing in an autostereoscopic manner.
  • interocular In general, the distance between both eyes is called interocular.
  • the human eye is about 65 mm.
  • the left and right eyes see slightly different images when looking at objects. This is called binocular disparity.
  • Man feels three-dimensional because of this binocular parallax.
  • the left eye image and the right eye image are separated and presented to the left eye and the right eye, respectively.
  • a barrier filter is disposed in front of the image panel. Through the barrier filter, the left eye sees the left eye image and the right eye sees the right eye image.
  • Prior arts related to the parallax barrier method include Korean Laid-Open Patent Publication No. 2005-0098493, Korean Laid-open Patent Publication No. 2006-0072078, and the like.
  • the parallax barrier method has a problem in that, when a device for releasing the parallax barrier is not attached, pixels are reduced when viewing a non-stereoscopic image, resulting in deterioration of image quality.
  • the parallax barrier method can realize stereoscopic images only at a narrow range of distances and angles even when viewing stereoscopic images, and there is a problem in that a so-called crosstalk phenomenon occurs when the parallax barrier is out of this distance or angle.
  • Crosstalk is a phenomenon in which the right eye image is seen in the left eye or the left eye image in the right eye.
  • the parallax barrier method when the viewing distance is long, such as a TV, the angle of binocular disparity is small. Therefore, in order for the left eye and the right eye to watch the left eye image and the right eye image, the distance between the image panel and the barrier filter must be increased. Accordingly, the parallax barrier method has a problem in that the display device becomes thick.
  • the total number of pixels for each of the multi-views is reduced by dividing the total number of pixels constituting the image panel by the number of multi-views. Therefore, when the multi-view is implemented according to the parallax barrier method, the resolution is reduced.
  • the lens plate is disposed in front of the image panel.
  • the lens plate is a lenticular screen in which semi-cylindrical convex lenses are arranged vertically.
  • the width of the convex lens corresponds to two or more times the width of the pixel.
  • the left eye image and the right eye image are separated by a lens plate.
  • Prior arts related to the lenticular method include Korean Patent Publication No. 2007-0001528, Korean Patent Publication No. 2008-0027559, and the like.
  • the R (Red) subpixel, G (Green) subpixel, and B (Blue) subpixel constituting the pixel are generally arranged side by side in the horizontal direction.
  • a convex lens having a large size compared to the pixel is used.
  • the color of some subpixels does not form an image on the lens plate. Accordingly, there is a problem in that the image quality to be displayed is degraded and the viewer can easily recognize the phenomenon caused by the lens.
  • This prior art introduces a lenticular consisting of a liquid crystal and an electrode to control the liquid crystal.
  • This prior art makes it possible to view a stereoscopic image by applying a voltage to the electrode when viewing the stereoscopic image so that the liquid crystal is in lenticular form, and when the non-stereoscopic image is viewed, the lenticular disappears by applying a voltage to the liquid crystal. Allows you to watch non-stereoscopic images with no symptoms.
  • the phenomenon of spreading occurs when watching a stereoscopic image in the same manner as the existing lenticular method, and there is a problem in that the manufacturing cost is greatly increased.
  • the lenticular of the electrode application method has a disadvantage in that crosstalk is increased when the stereoscopic image is viewed because the precision is lowered compared to the lenticular of the optical lens method.
  • the parallax barrier method and the lenticular method which are autostereoscopic methods, are generally applied when pixels output an image in a spatial division method.
  • the spatial division method is a method in which some of the pixels output the left eye image and at the same time the rest of the pixels output the right eye image. That is, in the spatial division, both the left eye image and the right eye image are output only through some of the pixels. Accordingly, the parallax barrier method and the lenticular method have a problem in that resolution is fundamentally degraded when the stereoscopic image is implemented.
  • the present applicant disclosed a patent application No. 2012-0010934 to solve the cross-talk phenomenon as described above to implement a multi-view auto glasses-free stereoscopic image display while preventing resolution degradation by combining a lenticular lens and a lattice shutter I've raced to try.
  • the multi-view is configured by a predetermined standard.
  • the above-described problem is mainly generated at the boundary of the multi-view.
  • viewer B may also be accompanied by dizziness, dizziness, and urgent improvement is required.
  • the present invention was created in view of the above-described problems in the prior art, but it is possible for two or more people to watch a stereoscopic image in an autostereoscopic manner, but two or more people look at different points.
  • an autostereoscopic 3D display device that can realize a stereoscopic-free image without abnormal images to all viewers so that the left and right of each viewer's right view does not change.
  • a multi-view autostereoscopic 3D display device having a line-to-line pixel arrangement and implemented in a multi-view form as a means for achieving the above object; Forming a left wing portion capable of inverting an image of a left eye image and a right eye image on the upper, lower, left, and right pixels around a boundary of a multi-view, which is an abnormal region in which an inverse phase occurs; When the reverse phase is confirmed in the abnormal region through the eye tracking, it provides a autostereoscopic 3D display device, characterized in that for driving the reverse phase inverting device to invert the image output through the mother blade.
  • the abnormal region is also characterized in that it exists at a predetermined distance ratio according to the size of the multi-view and the distance between the viewers.
  • the present invention it is possible to obtain an effect of accurately viewing a normal stereoscopic image of two or more multipersons at all points without causing an inversion of an abnormal area, especially a left eye image and a right eye image.
  • FIG. 1 is an exemplary view showing a basic concept for explaining the present invention.
  • FIG. 2 is an exemplary view for explaining a concept of a display for implementing autostereoscopic 3D images according to the present invention.
  • FIG. 3 is a partial perspective view of the lens unit of FIG. 2.
  • FIG. 5 is an exemplary view showing an embodiment of a display for implementing autostereoscopic 3D images according to the present invention.
  • the present invention has an abnormal region including an inverse problem in which the left eye image and the right eye image are reversed by accidentally looking at the same point when the viewer A and the viewer B watch the panel at a predetermined distance. It was created to solve this based on what is happening.
  • the present invention is based on the concept shown in Figures 2 to 4 to be described later and the basic premise that implemented in a multi-view.
  • a 55-inch TV was tested for the distance between the viewer B and the viewer B based on the viewer A, that is, the right viewing distance. As shown in the graph, an abnormal region for each right viewing distance was generated. have.
  • the inventors of the present invention have been devised to solve the problem by applying a known eye-tracking technique and a mosaic arrangement to detect this when looking at a specific point.
  • the autostereoscopic 3D display apparatus 200 is mounted on a front surface of the image panel 100.
  • the image panel 100 which is an existing premise of the present invention, includes a plurality of pixels arranged in a matrix form.
  • the image panel 100 outputs a left eye image and a right eye image through a plurality of pixels in a time division manner.
  • the time division method is a method in which all pixels sequentially output a left eye image and a right eye image.
  • Each of the pixels is composed of an R (Red) subpixel, a G (Green) subpixel, and a B (Blue) subpixel.
  • Light output from each subpixel has a corresponding color by passing through a color filter.
  • One pixel is formed by arranging the R subpixels, the G subpixels, and the B subpixels in a horizontal direction.
  • the image panel 100 a general LCD, LED, OLED, or the like may be used.
  • the image panel 100 may include a first liquid crystal unit 110, a first transparent sheet layer 120, and a first polarizer 130.
  • the first liquid crystal unit 110 includes a first pixel 111 and a second pixel 112.
  • the image panel 100 outputs an image through a plurality of pixels. However, in FIG. 1, only the first pixel 111 and the second pixel 112 adjacent thereto are illustrated among the plurality of pixels for convenience of description. .
  • Pixels 111 and 112 are composed of subpixels of respective colors. That is, the first pixel 111 is composed of an R subpixel 111-1, a G subpixel 111-2, and a B subpixel 111-3 arranged side by side in the horizontal direction, and the second pixel 112. ) Also includes an R subpixel 112-1, a G subpixel 112-2, and a B subpixel 112-3 arranged side by side in the horizontal direction.
  • the pixels 111 and 112 are filled with liquid crystals between electrodes for applying a voltage for each subpixel. In the subpixel to which the voltage is applied, the arrangement of the liquid crystals changes. Light passing through the liquid crystal in this state is diffracted. An image of the pixels 111 and 112 is formed by gathering light passing through the RGB subpixels.
  • the first transparent sheet layer 120 is disposed between the first liquid crystal unit 110 and the first polarizing plate 130.
  • the first transparent sheet layer 120 is inserted to adjust the gap between the first liquid crystal unit 110 and the autostereoscopic 3D display device 200.
  • the first transparent sheet layer 120 corresponds to a color filter glass substrate.
  • the first polarizing plate 130 linearly polarizes the light transmitted through the first liquid crystal unit 110.
  • the desired image is obtained by transmitting the light transmitted through the first liquid crystal unit 110 through the first polarizing plate 130.
  • the first polarizer 130 corresponds to a polarizer attached to the color filter glass substrate.
  • the autostereoscopic 3D display apparatus 200 includes an optical pattern unit and a lens unit.
  • the optical pattern part includes a second liquid crystal part 210, a second polarizing plate 220, and a second transparent sheet layer 230.
  • the lens unit includes a base layer 240 and a lens pillar array 250.
  • the lens pillars 251 are repeatedly arranged.
  • the cross section of the lens column 251 is in the shape of a circle or an ellipse. That is, the lens pillar 251 is a convex lens is implemented in the form of a pillar.
  • width refers to the length of the transverse direction in the cross section of FIG.
  • the width of the lens pillar 251 is smaller than or equal to the width of the subpixels 111-1 to 3 and 112-1 to 3.
  • the width of the lens pillar 251 illustrated in FIG. 1 is equal to the width of the subpixels 111-1 to 3 and 112-1 to 3.
  • the 'vertical' direction means a direction perpendicular to the cross section of FIG. 1
  • the term 'height' means a length in a direction perpendicular to the cross section of FIG. 1.
  • the height of the lens column 251 corresponds to the height of a row of subpixels.
  • the lens pillar 251 Since the width of the lens pillar 251 is less than or equal to the width of the subpixels 111-1 to 3 and 112-1 to 3, the lens pillar 251 is provided in each of the portions corresponding to each of the subpixel columns in the lens portion. This can be arranged. Accordingly, the convex lens may be disposed in each of the subpixels corresponding to each of the subpixels.
  • the lens pillar 251 When the width of the lens pillar 251 is larger than the width of the subpixels 111-1 to 3 and 112-1 to 3, some of the subpixel columns may not have the corresponding lens pillar 251. However, even in this case, if the width of the lens pillar 251 is 130% or less of the width of the subpixels 111-1 to 3 and 112-1 to 3, the lens portion may have a portion corresponding to each of most of the subpixel columns.
  • the lens pillar 251 may be disposed. Accordingly, the convex lens may be disposed at each portion of the lens unit corresponding to each of most of the subpixels.
  • the lens pillar 251 is a sub-pixel (111-1 to 3, 112-) 1 to 3) may be arranged diagonally. That is, the lens pillar 251 is formed such that an angle at which the moiré phenomenon is minimized is formed between the longitudinal center axis of the lens pillar 251 and the longitudinal center axis of the subpixels 111-1 to 3 and 112-1 to 3.
  • the subpixels 111-1 to 3 and 112-1 to 3 may be disposed obliquely. Preferably, this angle is greater than 0 degrees and less than 60 degrees. More preferably, this angle is 6 degrees or more and 15 degrees or less.
  • the lens pillar 251 As a result of the experiment of the present inventors, if the width of the lens pillar 251 is 130% or less even if the width of the lens pillar 251 is larger than the width of the subpixels 111-1 to 3 and 112-1 to 3, the lens pillar 251 at an angle at which the moiré phenomenon is minimized. ) Showed little difference in resolution when visual observation.
  • the width of the lens pillar 251 exceeds 130% of the width of the subpixels 111-1 to 3 and 112-1 to 3, the number of subpixel columns having no corresponding lens pillar increases. . As the number of such subpixel columns increases, the resolution decreases.
  • the lens pillars 251 are coated on the base layer 240 to form the lens pillar array 250.
  • the base layer 240 is made of a transparent film such as PET film or a transparent glass plate.
  • the lens pillar array 250 may be mounted on the autostereoscopic 3D display apparatus 200 without the base layer 240, the base layer 240 may be omitted.
  • FIG. 3 is a partial perspective view of the lens unit of FIG. 2, wherein the lens columns 251 coated on the base layer 240 form the lens column array 250.
  • the lens column array 250 is in the form of a lenticular lens.
  • an overcoating layer 260 may be added to a front surface of the lens pillar array 250.
  • the overcoat layer 260 is used to adjust the focal length of the lens pillar array 250.
  • An AN coated PET film (not shown) may be attached to the front surface of the overcoating layer 260.
  • the focal length of the lens pillar array 250 may be adjusted by overcoating.
  • the focal length of the lens column array 250 may also be adjusted by adopting a lens column 251 having a suitable refractive index.
  • the focal length of the lens pillar array 250 is adjusted so that the second liquid crystal unit 210 is positioned near the focal length of the lens pillar array 250.
  • the focal length of the lens pillar array 250 is adjusted to correspond to between 0.5 times and 1.5 times the distance from the lens pillar array 250 to the second liquid crystal part 210.
  • the focal length of the lens pillar array 250 is adjusted to correspond to the distance from the lens pillar array 250 to the second liquid crystal part 210.
  • the lens pillar array 250 may be disposed such that the convex surface of the lens pillar 251 faces the image panel 100 without facing the viewer. It is also possible to form a lens pillar array in which both front and rear convex lens pillars are formed.
  • the optical pattern portion is disposed between the lens portion and the image panel 100.
  • the optical pattern part includes the second liquid crystal part 210, the second polarizing plate 220, and the second transparent sheet layer 230.
  • the second liquid crystal part 210 is composed of a first isotropic ITO film layer, a first alignment film, a liquid crystal layer, a second alignment film, and a second isotropic ITO film layer.
  • the first isotropic ITO film layer is patterned by ITO sputtering after antiblocking coating of the isotropic film.
  • any film having an X-Y axis phase difference R0 of 20 or less is optically close to isotropic and coated with a transparent electrode and having a sheet resistance of 150 [ ⁇ / ⁇ ] or less.
  • an isotropic polycarbonate film, a cycloolefin film, a polyisosulfone film, or the like may be used as the isotropic film. Patterning is performed such that the pattern units 219 are arranged in a matrix form.
  • the first alignment layer is coated on the front surface of the first isotropic ITO film layer.
  • the liquid crystal layer is coated on the front side of the first alignment layer.
  • the second alignment layer is coated on the back side of the second isotropic ITO film layer, and the second isotropic ITO film layer coated with the second alignment layer is coated on the front surface of the liquid crystal layer. As a result, the second alignment layer is positioned on the front surface of the liquid crystal layer.
  • the second transparent sheet layer 220 is attached to the front surface of the second isotropic ITO film layer.
  • the liquid crystal layer provides a function of blocking or transmitting light.
  • the first alignment layer and the second alignment layer may be omitted if the liquid crystal layer can provide such a function without the first alignment layer and the second alignment layer.
  • the second liquid crystal part 210 is filled with liquid crystal between the first isotropic ITO film layer and the second isotropic ITO film layer.
  • TFT-TN, TFT-VA, TFT-IPS, TN, OCB, ECB, PDLC, or STN type liquid crystal displays may be used to implement the second liquid crystal unit 210. Can be.
  • pattern units 219 arranged in a matrix form are formed in the second liquid crystal part 210.
  • the width of the pattern unit 219 is greater than or equal to 1 / 2N (N is the number of viewpoints) of the width of the lens pillar 251 and less than or equal to 1 / 2N of the width of the subpixels 111-1 to 3.
  • the number N of viewpoints means the number of viewers who can simultaneously watch a stereoscopic image.
  • the number N of viewpoints means that two viewers can simultaneously watch a stereoscopic image.
  • the number N of viewpoints is 2 means that two viewpoints are provided.
  • the width of the pattern unit 219 is 1 / the width of the lens pillar 251. It is set to be greater than or equal to 4 and less than or equal to 1/4 of the width of the subpixels 111-1 to 3 and 112-1 to 3.
  • the width of the pattern unit 219 is greater than or equal to 1/8 of the width of the lens pillar 251 and the subpixel 111. -1 to 3, 112-1 to 3) is set to be less than or equal to 1/8 of the width.
  • the height of the pattern unit 219 is set to correspond to the height of the subpixels 111-1 to 3 and 112-1 to 3. That is, the height of the pattern unit 219 is set to match or approximate the height of the subpixels 111-1 to 3 and 112-1 to 3.
  • the first isotropic ITO film layer and the second isotropic ITO film layer are used as electrodes for applying a voltage for each pattern unit 219.
  • the second liquid crystal unit 210 has a voltage applying unit (not shown) for applying a voltage for each pattern unit 219 through the electrode.
  • the liquid crystal array changes in each portion corresponding to the pattern units in the liquid crystal layer.
  • a phase change of 1 / 2 ⁇ occurs in the left eye image L or the right eye image R transmitted through the liquid crystal layer in this state.
  • the liquid crystal array does not change for pattern units to which no voltage is applied.
  • the phase change does not occur in the left eye image L or the right eye image R passing through the liquid crystal layer in this state.
  • the second polarizing plate 220 is disposed between the second liquid crystal part 210 and the lens part.
  • the second polarizer 220 linearly polarizes the image transmitted through the second liquid crystal unit 210.
  • the image transmitted through the second liquid crystal unit 210 is classified into two types. One type is an image transmitted through a pattern unit to which no voltage is applied, and the other type is an image passing through a pattern unit to which no voltage is applied. There is a phase difference of 1 / 2 ⁇ between the two types of images. Due to this phase difference, only one of the two types passes through the second polarizing plate 220 and the other kind is blocked by the second polarizing plate 220.
  • the image transmitted through the pattern unit to which no voltage is applied passes through the second polarizing plate 220, and the image passing through the pattern unit to which the voltage is applied is blocked by the second polarizing plate 220.
  • the pattern unit to which no voltage is applied forms the light transmitting portion of the optical pattern portion
  • the pattern unit to which voltage is applied forms the light blocking portion of the optical pattern portion.
  • each of the pattern units arranged in the matrix form in the second liquid crystal part 210 forms a light blocking part or a light transmitting part of the optical pattern part.
  • the light blocking portion and the light transmitting portion are different in the arrangement of the liquid crystals in the second liquid crystal portion 210.
  • An optical pattern consisting of light blocking portions and light transmitting portions is formed in the optical pattern portion.
  • the second transparent sheet layer 230 is disposed between the lens unit and the second liquid crystal unit 210.
  • the second polarizing plate 220 is disposed on the front surface of the second liquid crystal unit 210
  • the second transparent sheet layer 230 is disposed on the front surface of the second polarizing plate 220.
  • the position of the second polarizing plate 220 and the position of the second transparent sheet layer 230 may be changed. That is, the second transparent sheet layer 230 may be disposed on the front surface of the second liquid crystal unit 210, and the second polarizing plate 220 may be disposed on the front surface of the second transparent sheet layer 230.
  • the thickness of the second transparent sheet layer 230 is adjusted to adjust the thickness between the lens unit and the second liquid crystal unit 210.
  • the distance of can be adjusted.
  • the thickness of the second transparent sheet layer 230 passes through the lens column array 250 and the left eye is the second liquid crystal unit 210 among the binoculars facing the subpixels 111-1 to 3 and 112-1 to 3.
  • the distance between the portion reaching to the right eye line and the portion reaching the second liquid crystal part 210 is determined to correspond to the width of the pattern unit.
  • the optical pattern formed in the optical pattern portion passes through the lens column array 250 and the left eye or right eye gaze toward the subpixels 111-1 to 3 and 112-1 to 3 selectively passes due to binocular disparity. Or to be blocked.
  • the optical pattern includes a first optical pattern and a second optical pattern.
  • the first optical pattern is formed such that the left eye is passed and the right eye is blocked out of the binocular eyes passing through the lens pillar array 250 toward the subpixels 111-1 to 3 and 112-1 to 3.
  • a light-transmitting unit is disposed at a portion where the left eye line of sight reaches among the binocular lines of eyes facing each of the subpixels 111-1 to 3 and 112-1 to 3.
  • the light shielding portion is disposed in the portion.
  • the second optical pattern is formed such that the right eye line passes and the left eye line is blocked.
  • a light-transmitting part is disposed at a portion where the right-eye line of the binocular line faces each of the sub-pixels 111-1 to 3 and 112-1 to 3, and a light-transmitting unit is disposed and a left-eye line is reached.
  • the light shielding portion is disposed in the portion. That is, the pattern units forming the light transmitting portion in the first optical pattern form the light blocking portion in the second optical pattern, and the pattern units forming the light blocking portion in the first optical pattern form the light transmitting portion in the second optical pattern.
  • the distance between the parts of the binocular line toward the subpixels 111-1 to 3 and 112-1 to 3 through the lens column array 250 to the second liquid crystal unit 210 corresponds to the width of the pattern unit. Therefore, by forming a light transmitting portion in one of the pattern units adjacent to each other and a light shielding portion in the other, it is possible to selectively block any one of the binocular vision toward the subpixels (111-1 to 3, 112-1 to 3). Will be.
  • the pair of light transmitting parts and the light blocking parts adjacent to each other form a subpattern constituting the entire optical pattern.
  • the first pattern unit and the second pattern unit two adjacent pattern units constituting the subpattern are referred to as the first pattern unit and the second pattern unit, respectively, when the left eye line reaches the first pattern unit, the right eye line reaches the second pattern unit.
  • the light emitting part is formed in the first pattern unit and the light shielding part is formed in the second pattern unit, it is possible to pass the left eye line and block the right eye line like the first optical pattern, and the light shield is formed in the first pattern unit.
  • the subpattern in which the light transmitting part is formed in the second pattern unit is used, it is possible to pass the right eye line and block the left eye line like the second optical pattern.
  • the second liquid crystal unit 210 functions as a PNLC (Switchable Display Shutter) type.
  • PNLC Switchable Display Shutter
  • the optical pattern formed in the optical pattern unit is also changed. Based on this, the optical pattern portion is alternately formed with the first optical pattern and the second optical pattern.
  • all pixels of the image panel 100 sequentially output a left eye image and a right eye image.
  • a first optical pattern is formed on the optical pattern and the image panel
  • a second optical pattern is formed in the optical pattern portion.
  • the left eye image is output from the image panel 100 when the first optical pattern is formed in the optical pattern portion
  • the right eye image is output from the image panel 100 when the second optical pattern is formed in the optical pattern portion.
  • this switching between the first optical pattern and the second optical pattern is made 60 or more times per second. Accordingly, the viewer can watch a stereoscopic image without deterioration of resolution.
  • the optical pattern is formed by considering the eyes of each of the multi-viewpoints. For example, as shown in FIG. 1, when the number of viewpoints N is 2, the left eye and the right eye of the viewer A located in one of the two viewpoints, and the left eye and the right eye of the viewer B located in the other one. In consideration of both, the optical pattern is formed.
  • the optical pattern includes at least N subpatterns for each part corresponding to the convex lens for each subpixel.
  • the convex lens for each subpixel refers to a portion of the lens pillar array 250 corresponding to each of the subpixels 111-1 to 3.
  • the subpattern of the first optical pattern and the subpattern of the second optical pattern are different from each other in the positions of the light blocking portion and the light transmitting portion. For example, if the light shield is formed on the right side of the subpattern of the first optical pattern, the light shield is formed on the right side of the second pattern.
  • At least two pattern units exist for each part corresponding to the convex lens for each subpixel. Accordingly, at least one subpattern may be included in each portion corresponding to the convex lens for each subpixel.
  • at least four pattern units exist for each part corresponding to the convex lens for each subpixel
  • at least two sub-patterns may be included for each part corresponding to the convex lens for each subpixel, thereby providing a multi-view point of two or more views have.
  • the autostereoscopic 3D display apparatus 200 provides a multi-viewpoint, all subpixels constituting the image panel may be provided for each of the multi-viewpoints. Accordingly, the autostereoscopic 3D image may be implemented without degrading the resolution even for a multi-view point.
  • viewers located in each of the multi-viewing points may independently watch stereoscopic images.
  • the number of multi-view points is 10 or less. This is in consideration of the ease and cost in manufacturing the optical pattern portion. If these matters are not a problem, the number of multi-view points may exceed ten.
  • the autostereoscopic 3D display apparatus 200 does not have a lens unit, the viewer's eyes will reach the second liquid crystal unit 210 as it is. Then, the viewer's gaze will reach a wider range than the width of the pattern unit on the second liquid crystal unit 210. Accordingly, when the left eye image is output from the image panel 100, the left eye image is visible not only in the left eye but also in the right eye when the left eye image is output from the image panel 100, or when the right eye image is output from the image panel 100. The right eye image may appear.
  • the lens unit reduces the area of the portion where the viewer's eyes reach the second liquid crystal unit 210. Since the focal length of the lens pillar array 250 preferably corresponds to the distance from the lens pillar array 250 to the second liquid crystal part 210, it is preferable that the lens unit reaches the second liquid crystal part 210 as a viewer. It leads to focus.
  • the focal length of the lens pillar array 250 does not coincide with the distance from the lens pillar array 250 to the second liquid crystal unit 210, the viewer's line of sight reaches the second liquid crystal unit 210 even when the focal length is close.
  • the area is significantly reduced. For example, even when the focal length of the lens pillar array 250 is between 0.5 and 1.5 times the distance from the lens pillar array 250 to the second liquid crystal part 210, the viewer's gaze is the second liquid.
  • the area of the portion reaching the government 210 is significantly reduced.
  • the above phenomenon when the lens unit does not exist in the autostereoscopic 3D display device 200 does not occur.
  • the distance and angle at which the stereoscopic image can be viewed may also be formed over a wide range.
  • the width of the pattern unit is smaller than or equal to 1 / 2N of the width of the subpixel, but since the second liquid crystal unit 210 is located near the focal length of the lens column array 250, the viewer uses the pattern unit having such a small width. It is possible to selectively block the gaze of.
  • the lens pillar array 250 cannot separate the image for each pixel because the width of the lens pillar 251 is less than or equal to the width of the subpixels 111-1 to 3 and 112-1 to 3.
  • the optical pattern formed in the optical pattern part passes through the lens column array 250 and the left eye or right eye gaze toward the subpixels 111-1 to 3 and 112-1 to 3 selectively passes due to binocular disparity. To be blocked or blocked. Accordingly, the above phenomenon when the optical pattern portion does not exist in the autostereoscopic 3D display device 200 does not occur.
  • the convex lens having a width smaller than or equal to the width of the subpixel is disposed for each part corresponding to the subpixel, even if the convex lens effect occurs, the colors of all the subpixels may form an image on the lens unit. This can prevent the spreading phenomenon in the conventional lenticular method.
  • the second transparent sheet layer 230 may be omitted.
  • the second liquid crystal unit 210 functions as a PNLC (Switchable Display Shutter) type and the optical pattern formed on the optical pattern portion is variable. Therefore, it is possible to detect the viewer's positions with the camera and to form the optical pattern to be suitable for the detected positions.
  • PNLC Switchable Display Shutter
  • the left eye image is output from the image panel 100 at the position after the movement, the left eye image may be seen not only on the left eye but also on the right eye, but the left eye image is adjusted to be visible only to the left eye by changing the optical pattern to be suitable for the position after the movement. It is possible to do
  • the optical pattern unit may configure the optical pattern only as a light transmitting unit by applying no voltage to any pattern unit of the second liquid crystal unit 210 or applying a voltage to all pattern units. Accordingly, even when viewing a general image, deterioration of image quality due to the reduction of pixels does not occur.
  • an array of pixels is arranged in a line-to-line manner.
  • the pixel described below should be understood as a pixel having such a structure.
  • the line-to-line method is implemented in such a way that the left eye image is transmitted over the entire pixel in one line and the right eye image is transmitted over the entire pixel in one line as shown in the example of FIG. 5. That's the way.
  • both viewers may be at the normal distance.
  • the left eye image is viewed in the left eye and the right eye image in the right eye, all three-dimensional images can be watched without abnormal areas.
  • the image is arranged in the lower wing method separately, and the lower wing method when viewing the same point with each other through eye tracking.
  • the viewers A and B are configured to view normal images even in the abnormal region.
  • the left eye image line is output to the left eye image line
  • the right eye image is output to the right eye image line. Therefore, the left wing image (M) also outputs the left eye image or the right eye image suitable for the line image.
  • control unit (not shown) of the display device checks the left eye of the viewer B through eye trekking, and changes the image of the mother blade unit M, which is an area where the abnormal region is implemented, through the image reversing device (not shown).
  • the viewer A sees a normal right eye image, and the image is inverted at the left and right centers around the first intersection point T1 and the original right eye image is output in a line-to-line manner. Since only the left eye is output M), viewer B sees the left eye through the left eye, so that both can see normal images.
  • the image reversing apparatus does not mean that the image is reversed. Instead, the image reversing apparatus reverses the left eye image and the right eye image, as described above. It can be solved simply by controlling to change. Nevertheless, this concept itself has not been disclosed so far.
  • the present invention can effectively solve the abnormal phenomenon caused by the reverse phase by introducing the hatch portion M and the image reversing apparatus in the abnormal region.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

L'invention a trait à un dispositif qui permet d'afficher une image stéréoscopique sans lunettes. Le dispositif d'affichage d'image stéréoscopique sans lunettes multivue faisant l'objet de l'invention présente un réseau de pixels disposé dans un système ligne à ligne, et il est mis en œuvre sous la forme de plusieurs vues, une unité mosaïque susceptible d'inverser une image entre une image d'œil gauche et une image d'œil droit étant créée sur les pixels supérieurs, inférieurs, gauches et droits autour de la limite des différentes vues sous la forme d'une zone anormale dans laquelle une image inversée apparaît, et un appareil d'inversion d'image inversée étant commandé pour inverser l'image délivrée par l'intermédiaire de l'unité mosaïque lorsqu'une image inversée est détectée dans la zone anormale grâce à un suivi oculaire. L'invention permet à deux observateurs ou plus de visionner respectivement leurs images stéréoscopiques normales partout, sans zone anormale, en particulier sans la présence d'une image inversée générée par un échange entre l'image d'œil gauche et l'image d'œil droit.
PCT/KR2014/001975 2013-08-30 2014-03-11 Dispositif d'affichage d'image stéréoscopique sans lunettes WO2015030330A1 (fr)

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KR10-2013-0104045 2013-08-30
KR20130104045A KR101510668B1 (ko) 2013-08-30 2013-08-30 무안경 입체영상 디스플레이 장치

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CN117939106A (zh) * 2024-03-19 2024-04-26 成都工业学院 一种用于立体显示的视点规划组件

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KR102395213B1 (ko) * 2015-07-31 2022-05-06 엘지디스플레이 주식회사 입체 영상 표시 장치

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JPH10161061A (ja) * 1996-12-02 1998-06-19 Sanyo Electric Co Ltd 立体映像表示装置
KR20060105140A (ko) * 2005-04-01 2006-10-11 삼성전자주식회사 입체영상장치
KR101085586B1 (ko) * 2011-01-28 2011-11-25 한동희 가변형 배리어패널을 구비하는 입체영상 디스플레이 장치
KR20120034581A (ko) * 2010-10-01 2012-04-12 삼성전자주식회사 배리어를 이용하는 3ｄ 디스플레이 장치 및 그 구동 방법
KR20130078163A (ko) * 2011-12-30 2013-07-10 한화엘앤씨 주식회사 무안경 입체 영상 디스플레이 장치
KR20130089508A (ko) * 2012-02-02 2013-08-12 한화엘앤씨 주식회사 다시점 무안경 입체 영상 디스플레이 장치

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Publication number Priority date Publication date Assignee Title
JPH10161061A (ja) * 1996-12-02 1998-06-19 Sanyo Electric Co Ltd 立体映像表示装置
KR20060105140A (ko) * 2005-04-01 2006-10-11 삼성전자주식회사 입체영상장치
KR20120034581A (ko) * 2010-10-01 2012-04-12 삼성전자주식회사 배리어를 이용하는 3ｄ 디스플레이 장치 및 그 구동 방법
KR101085586B1 (ko) * 2011-01-28 2011-11-25 한동희 가변형 배리어패널을 구비하는 입체영상 디스플레이 장치
KR20130078163A (ko) * 2011-12-30 2013-07-10 한화엘앤씨 주식회사 무안경 입체 영상 디스플레이 장치
KR20130089508A (ko) * 2012-02-02 2013-08-12 한화엘앤씨 주식회사 다시점 무안경 입체 영상 디스플레이 장치

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117939106A (zh) * 2024-03-19 2024-04-26 成都工业学院 一种用于立体显示的视点规划组件
CN117939106B (zh) * 2024-03-19 2024-05-24 成都工业学院 一种用于立体显示的视点规划组件

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