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WO2013022190A1 - Procédé et appareil pour fixer des panneaux d'affichage stéréoscopiques automatiques - Google Patents

Procédé et appareil pour fixer des panneaux d'affichage stéréoscopiques automatiques Download PDF

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Publication number
WO2013022190A1
WO2013022190A1 PCT/KR2012/005363 KR2012005363W WO2013022190A1 WO 2013022190 A1 WO2013022190 A1 WO 2013022190A1 KR 2012005363 W KR2012005363 W KR 2012005363W WO 2013022190 A1 WO2013022190 A1 WO 2013022190A1
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Prior art keywords
camera
display module
stereoscopic panel
stereoscopic
module
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PCT/KR2012/005363
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English (en)
Inventor
Ju Yong Lee
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Masterimage 3D Asia LLC
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Masterimage 3D Asia LLC
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    • 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
    • G02B30/30—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 parallax barriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof

Definitions

  • the present invention relates to an auto stereoscopic display and, more particularly, in attaching parallax barrier type auto stereoscopic panels to a display module, the present invention relates to a method and apparatus for attaching the auto stereoscopic display panels by finely and accurately adjusting relative alignment angles and alignment positions by using the image-capturing function of the display module.
  • a method for realizing an auto stereoscopic image may realize a 3D image by respectively projecting two different images to each eye of a human being.
  • the auto stereoscopic display device may be broadly divided into a glasses type auto stereoscopic display device and a non-glasses type (naked-eye type) auto stereoscopic display device.
  • the glasses type auto stereoscopic display device is disadvantageous in that the viewer is required to wear special glasses.
  • the non-glasses type auto stereoscopic display device allows the viewer to view the stereoscopic images (or 3D images) by simply looking at the display screen without having to wear any special glasses, thereby resolving the disadvantage occurring in the glasses type auto stereoscopic display device. Accordingly, many research and development on the non-glasses type auto stereoscopic display device are being carried out.
  • the non-glasses type auto stereoscopic display device is broadly divided into a lenticular type display device and a parallax-barrier type display device.
  • Fig. 1a illustrates a cross-sectional view of a 3D image display device using a parallax-barrier
  • Fig. 1b illustrates a perspective view of an auto stereoscopic image display device using a parallax-barrier.
  • the parallax-barrier type auto stereoscopic display device includes a display module (10) configured to alternately align vertical left-side images (L) and right-side images (R) (along the Y-Y’ direction shown in Fig. 1b) respective to the left/right eyes along a horizontal direction (along the X-X’ direction shown in Fig. 1b), and a barrier layer configured of a plurality of vertical barrier sticks being referred to as a barrier (20) is placed before the display module (10).
  • a display module (10) configured to alternately align vertical left-side images (L) and right-side images (R) (along the Y-Y’ direction shown in Fig. 1b) respective to the left/right eyes along a horizontal direction (along the X-X’ direction shown in Fig. 1b)
  • a barrier layer configured of a plurality of vertical barrier sticks being referred to as a barrier (20) is placed before the display module (10).
  • such auto stereoscopic display device is configured to have display module (10) and the barrier (20) to be aligned and positioned so that the light corresponding to the left-side image (L) can be projected to the left eye, and so that the light corresponding to the right-side image (R) can be projected to the right eye.
  • the two divided left and right images (L, R) may be separately viewed so that the viewer can experience (or view) the display of a 3D image.
  • Fig. 2 illustrates a left side image and a right side image respectively filmed (or captured) by using 2 cameras.
  • the left-side image (L) and the right-side image (R) may correspond to still images or may corresponding moving picture images, and the corresponding images may also correspond to general image contents taken from each camera.
  • Fig. 3 illustrates an image corresponding to a merged image of a left side image and a right side image respectively filmed (or captured) by using 2 cameras.
  • the left-side image and the right-side image which are taken (or captured) from the two cameras, as shown in (1) and (2) of Fig. 2, are inputted to an auto stereoscopic image generation means so as to be divided in column units along the vertical direction, so as to be alternately aligned along the horizontal direction, thereby being merged.
  • an auto stereoscopic image generation means so as to be divided in column units along the vertical direction, so as to be alternately aligned along the horizontal direction, thereby being merged.
  • the left and right images that are spatially alternated and aligned accordingly may be shown to the viewer’s left eye as the left-side image and may be shown to the viewer’s right eye as the right-side image, thereby being viewed by the viewer as a stereoscopic image.
  • the above-described parallax-barrier may be realized in a cell-type and may be selectively (or optionally) operated in a horizontal or vertical direction. Accordingly, in case of merging stereoscopic images, the merging direction is not required to be limited to only one direction, and by adjusting the direction along which the stereoscopic images are merged and by adjusting the direction of the barrier included in the parallax-barrier type display module, which is used for projecting (or displaying) the merged stereoscopic images, the stereoscopic images may be projected and displayed.
  • the parallax-barrier type when using the parallax-barrier type, by controlling the ON/OFF state of the parallax barrier, the parallax-barrier type is more advantageous in that the display mode may be easily shifted to and from a 2D display mode and a 3D display mode.
  • a stereoscopic panel e.g., parallax barrier module
  • parallax barrier module which configures the above-described auto stereoscopic display panel
  • Fig. 4 illustrates an example for briefly describing a method for attaching display panels for real-capture based auto stereoscopic images according to the patent No. ’728.
  • attachment objects such as the display module (10) and the stereoscopic panel (20), shown in Fig. 1, are placed in an attachment apparatus, which is also an attachment object (S10). Thereafter, in order to activate the display module (10) and the stereoscopic panel (20), a stereoscopic image signal is provided (S20), and a stereoscopic image is captured (or taken or filmed) by using 2 cameras respectively corresponding to the actual left eye and the actual right eye of a user (S30).
  • positions of the stereoscopic panel (20) and display module (10) are adjusted (S60). And, if the degree of differentiation exceeds a predetermined reference level, by attaching an attachment object a more substantial alignment status may be verified, thereby enabling the stereoscopic panel (20) to be attached to the display module (10).
  • the applicant of the present invention has modified the above-described real-capture based display panel attachment method to an upgraded level, so as to devise an “Attachment Apparatus performing Horizontal/Vertical alignment of the display panel for stereoscopic images (Patent Application No. 2008-0025385; Patent No. 935892)”.
  • an “Attachment Apparatus performing Horizontal/Vertical alignment of the display panel for stereoscopic images Patent Application No. 2008-0025385; Patent No. 935892”.
  • the method for attaching the display panel for stereoscopic images according to the patent No. ’892 will be described in detail.
  • Fig. 5 to Fig. 7 illustrates examples for briefly describing a method for attaching display panels for real-capture based auto stereoscopic images according to the patent No. ’892.
  • the degree of differentiation of the image being displayed through the display module (200) and the stereoscopic panel (100) may be measured by using the 2 cameras (31, 32) respective to the left eye and the right eye of the user. Then, when deciding whether or not to perform attachment based upon the measured result, the process steps are identical to those of the ’728 patent.
  • a cell-type parallax barrier structure wherein the stereoscopic panel can be positioned not only along the vertical direction but also along both vertical direction/horizontal direction, can be provided, and the fact that the difference between the left-side image and the right-side image using the cameras respective to each of the left eye and the right eye of the user may also be verified by a differentiation process performed by any one of the cameras respective to the left and right eyes of the user, 2 cameras are positioned, in the ’892 patent, as shown in Fig. 7, so that the horizontal/vertical alignments between the stereoscopic panel and the display module can be verified at once. More specifically, referring to Fig.
  • the 1st camera (or Camera 1) (31) may perform the role of verifying the horizontal alignment state (direction along line X-X’) between the stereoscopic panel and the display module
  • the 2nd camera (or Camera 2) (32) may perform the role of verifying the vertical alignment state (direction along line Y-Y’) between the stereoscopic panel and the display module.
  • the attachment of stereoscopic panels may be performed in a state when a maximum 3D display state is provided to the user. And, accordingly, a stereoscopic display panel may be generated so as to provide the user with a greater 3D display as compared to when verifying the alignment status by only using numeric precision.
  • an apparatus for attaching stereoscopic panels comprises a position adjustment module configured to measure relative alignment angle and alignment positions of a stereoscopic panel and a display module, wherein the stereoscopic panel is configured to realize repeatedly positioned parallax barriers along at least one of a vertical direction (Y-Y’ direction) and a horizontal direction (X-X’ direction), and wherein the display module is configured to project image light rays to the stereoscopic panel, and to adjust the relative alignment angle and alignment positions of the stereoscopic panel and the display module; and an attachment module configured to attach the stereoscopic panel and the display module, after the position adjustment module has adjusted the relative alignment angle and alignment positions of the stereoscopic panel and the display module, wherein the position adjustment module may include a camera module configured to have the position adjustment module measure the relative alignment angle of the stereoscopic panel and the display module, by capturing images while moving to and from 2 different positions
  • the position adjustment module may be configured to measure the relative alignment angle and the relative alignment positions by having the camera module capture images, in a state when the stereoscopic panel has activated vertical or horizontal parallax barriers, and when the display module has projected test image light rays to the stereoscopic panel.
  • the position adjustment module may also be configured to measure the relative alignment angle and alignment positions of the stereoscopic panel and the display module by using a distance between the parallax barrier of each stereoscopic panel and an image corresponding to a specific row or column of the display module, from 2 images captured by the camera module at 2 different positions (or points) each spaced apart from one another at a pre-decided distance, and by using a ratio between the pre-decided distance ratios.
  • a camera of the camera module capturing images by moving to and from 2 different positions, each spaced apart from one another at a pre-decided distance, corresponds to a single camera.
  • the camera module may be configured to capture images from 2 positions (Position 1 and Position 2), each spaced apart from one another at a pre-decided 1st distance along a vertical direction (Y-Y’ direction), and from a 3rd position (Position 3) being spaced apart from Position 1 or Position 2 along a horizontal direction (X-X’) at a pre-decided 2nd distance.
  • the position adjustment module may be configured to adjust a vertical alignment angle of the stereoscopic panel and the display module by using an image captured by the camera module at Position 1 and by using an image captured by the camera module at Position 2, and may also be configured to adjust a parallax barrier unit alignment difference between the stereoscopic panel and the display module by using an image captured by the camera module at any one of Position 1 and Position 2 and by using an image captured by the camera module at Position 3.
  • the stereoscopic panel may include a cell-type parallax barrier configured to realize repeatedly positioned parallax barriers along at least one of a vertical direction (Y-Y’ direction) and a horizontal direction (X-X’ direction), and, in this case, the position adjustment module may be configured to measure a vertical alignment angle of the stereoscopic panel and the display module by using an image captured by the camera module at Position 1 and an image captured by the camera module at Position 2, in a state when the stereoscopic panel has activated vertical parallax barriers, and the position adjustment module may also be configured to measure a horizontal alignment angle of the stereoscopic panel and the display module by using an image captured by the camera module at any one of Position 1 and Position 2 and an image captured by the camera module at Position 3, in a state when the stereoscopic panel has activated horizontal parallax barriers.
  • Position 1 and Position 2 may respectively correspond to a left-most parallax barrier or a right-most parallax barrier along the horizontal direction, among the parallax barriers of the stereoscopic panel.
  • a camera for capturing images for determining a matching rate of a specific point of the stereoscopic panel and a specific point of the display module may include a 1st lens, a 2nd lens, and a half mirror, and, in this case, the position adjustment module may observe a specific point of the stereoscopic panel by using an image captured by a camera of the camera module using the 1st lens, and the position adjustment module may observe a specific point of the display module by using an image captured by a camera of the camera module using the 2nd lens, and an image captured by using any one of the 1st lens and the 2nd lens may correspond to an image being captured after passing through the half mirror.
  • a specific point of the stereoscopic panel may include a central line point of the parallax barrier located in a central portion of the stereoscopic panel, and a specific point of the display module may include a pixel boundary line of a central portion of the display module.
  • the camera module may include a 1st camera configured to capture images by moving to and from 2 different positions, each spaced apart from one another at a pre-decided distance along the positioned direction of the parallax barrier (Y-Y’ direction or X-X’ direction), and a 2nd camera configured to capture images showing whether or not a specific point of the stereoscopic panel spatially matches with a specific point of the display module.
  • a 1st camera configured to capture images by moving to and from 2 different positions, each spaced apart from one another at a pre-decided distance along the positioned direction of the parallax barrier (Y-Y’ direction or X-X’ direction)
  • a 2nd camera configured to capture images showing whether or not a specific point of the stereoscopic panel spatially matches with a specific point of the display module.
  • the apparatus for attaching stereoscopic panels may further include a contact jig configured to have a cross shape including an opening at a central portion of the cross shape, and configured to fix the stereoscopic panel or the display module by using a plurality of vacuum contact points.
  • a method for attaching stereoscopic panels comprises the steps of adjusting a relative alignment angle, by measuring the relative alignment angle of a stereoscopic panel and a display module, wherein the stereoscopic panel is configured to realize repeatedly positioned parallax barriers along at least one of a vertical direction (Y-Y’ direction) and a horizontal direction (X-X’ direction), by using a 1st camera configured to capture images by moving to and from 2 different positions, each spaced apart from one another at a pre-decided distance along the positioned direction of the parallax barrier (Y-Y’ direction or X-X’ direction); measuring and adjusting relative alignment positions of the stereoscopic panel and the display module, by using a 2nd camera configured to capture images showing whether or not a specific point of the stereoscopic panel spatially matches with a specific point of the display module; and attaching the stereoscopic panel and the display
  • any one of the relative alignment angle adjustment and the relative alignment position adjustment may be performed by having any one of the 1st camera and the 2nd camera capture images, in a state when the stereoscopic panel has activated vertical or horizontal parallax barriers, and when the display module has projected test image light rays to the stereoscopic panel.
  • the relative alignment angle adjustment may include the steps of calculating a distance between the parallax barrier of each stereoscopic panel and an image corresponding to a specific row or column of the display module, from 2 images captured by the 1st camera at 2 different positions (or points) each spaced apart from one another at a pre-decided distance; and measuring the relative alignment angle of the stereoscopic panel and the display module by using a ratio between the calculated distances and a ratio of the pre-decided distance.
  • the 1st camera capturing images by moving to and from 2 different positions, each spaced apart from one another at a pre-decided distance, may correspond to a single camera.
  • the 1st camera may be configured to capture images from 2 positions (Position 1 and Position 2), each spaced apart from one another at a pre-decided 1st distance along a vertical direction (Y-Y’ direction), and from a 3rd position (Position 3) being spaced apart from Position 1 or Position 2 along a horizontal direction (X-X’) at a pre-decided 2nd distance.
  • the relative alignment angle adjustment may include the steps of adjusting a vertical alignment angle of the stereoscopic panel and the display module by using an image captured by the 1st camera at Position 1 and an image captured by the 1st camera at Position 2; and adjusting a parallax barrier unit alignment difference between the stereoscopic panel and the display module by using an image captured by the 1st camera at any one of Position 1 and Position 2 and by using an image captured by the 1st camera at Position 3.
  • the stereoscopic panel may include a cell-type parallax barrier configured to realize repeatedly positioned parallax barriers along at least one of a vertical direction (Y-Y’ direction) and a horizontal direction (X-X’ direction), and, in this case, the relative alignment angle adjustment may include the steps of measuring a vertical alignment angle of the stereoscopic panel and the display module by using an image captured by the 1st camera at Position 1 and an image captured by the 1st camera at Position 2, in a state when the stereoscopic panel has activated vertical parallax barriers; and measuring a horizontal alignment angle of the stereoscopic panel and the display module by using an image captured by the 1st camera at any one of Position 1 and Position 2 and an image captured by the 1st camera at Position 3, in a state when the stereoscopic panel has activated horizontal parallax barriers.
  • Position 1 and Position 2 may respectively correspond to a left-most parallax barrier or a right-most parallax barrier along the horizontal direction, among the parallax barriers of the stereoscopic panel.
  • the 2nd camera may include a 1st lens, a 2nd lens, and a half mirror, and, in this case, the relative alignment angle adjustment may include the steps of performing an adjustment process for matching a specific point of the stereoscopic panel, being verified by using an image captured by the 2nd camera using the 1st lens, with a specific point of the display module by using an image captured by the 2nd camera using the 2nd lens.
  • a specific point of the stereoscopic panel may include a central line point of the parallax barrier located in a central portion of the stereoscopic panel, and a specific point of the display module may include a pixel boundary point of a central portion of the display module.
  • each of the 1st camera and the 2nd camera may correspond to a single camera.
  • a high quality stereoscopic panel may be created.
  • Fig. 1a illustrates a cross-sectional view of a 3D image display device using a parallax-barrier
  • Fig. 1b illustrates a perspective view of an auto stereoscopic image display device using a parallax-barrier.
  • Fig. 2 illustrates a left side image and a right side image respectively filmed (or captured) by using 2 cameras.
  • Fig. 3 illustrates an image corresponding to a merged image of a left side image and a right side image respectively filmed (or captured) by using 2 cameras.
  • Fig. 4 illustrates an example for briefly describing a method for attaching display panels for real-capture based auto stereoscopic images according to patent No. ’728.
  • Fig. 5 to Fig. 7 illustrates examples for briefly describing a method for attaching display panels for real-capture based auto stereoscopic images according to patent No. ’892.
  • Fig. 8 illustrates an example for generally describing a method for attaching auto stereoscopic display panels according to an exemplary embodiment of the present invention.
  • Fig. 9 illustrates an example for describing a method for adjusting relative angles of an auto stereoscopic panel and a display module according to an exemplary embodiment of the present invention.
  • Fig. 10 and Fig. 11 illustrate examples for describing incorrect alignments of the auto stereoscopic panel and the display module according to an exemplary embodiment of the present invention.
  • Fig. 12 illustrates an example for describing a method for measuring relative angles of the auto stereoscopic panel and the display module and for verifying a boundary region between the auto stereoscopic panel and the display module by using a 3-point measurement according to a preferred embodiment of the present invention.
  • Fig. 13 illustrates an example for describing a concept of capturing images by moving a single camera according to an exemplary embodiment of the present invention.
  • Fig. 14 illustrates an example for describing a method for adjusting horizontal/vertical angles of auto stereoscopic panels having cell-type parallax barrier structures by using a 3-point measurement according to a preferred embodiment of the present invention.
  • Fig. 15 and Fig. 16 illustrate examples for adjusting relative positions between an auto stereoscopic panel and a display module according to an exemplary embodiment of the present invention.
  • Fig. 17 illustrates a flow chart for showing the process steps of a method for attaching auto stereoscopic display panels according to an exemplary embodiment of the present invention.
  • Fig. 18 and Fig. 19 illustrate general views of a jig of an attachment device according to an exemplary embodiment of the present invention.
  • Fig. 20 and Fig. 21 illustrate examples for describing the advantages of an attachment device jig according to an exemplary embodiment of the present invention.
  • Fig. 8 illustrates an example for generally describing a method for attaching auto stereoscopic display panels according to an exemplary embodiment of the present invention.
  • a stereoscopic panel (20 of Fig. 1; or 100 of Fig. 5 to Fig. 7) and a display module (10 of Fig. 1; or 200 of Fig. 5 to Fig. 7) are placed on an attachment apparatus as attachment objects (S701), and a process step of providing a stereoscopic image signal to the stereoscopic panel and the display module (S702) may be identical to that of the above-described real-capture based stereoscopic display panel attachment method.
  • a step of adjusting relative angles of the stereoscopic panel and the display module (S703) is differentiated from a step of adjusting relative positions of the stereoscopic panel and the display module (S705). Thereafter, the relative angles are first adjusted, and then the relative positions are adjusted.
  • a stereoscopic image capturing may be performed in order to verify the relative angle alignment state of the stereoscopic panel and the display module (S704). Then, it is determined whether or not the difference in the relative angles is below the predetermined reference level. If it is determined that the difference in the relative angles is greater than the predetermined reference level, the present invention proposes to first perform the angle adjustment process, wherein the relative angles of the stereoscopic panel and the display module are adjusted (S706). Thereafter, in a state when the relative angles of the stereoscopic panel and the display module are aligned, a process of capturing an image for adjusting horizontal/vertical alignment positions of the stereoscopic panel and the display module is performed (S708). And, the horizontal/vertical alignment state may be verified based upon the captured image (S709). Then, when it is determined that an adjustment in the horizontal/vertical positions is required to be performed, the positions may be adjusted accordingly (S710).
  • the above-described relative angle adjustment (S703) and relative position adjustment (S707) may be performed through a position adjustment module.
  • the position adjustment module may change and reposition the angle and position of each stereoscopic panel and display module, and the position adjustment module may include a camera module for the relative angle measurement and the relative position measurement.
  • the display panel attachment method may create a more efficient stereoscopic panel of a higher quality.
  • Fig. 9 illustrates an example for describing a method for adjusting relative angles of an auto stereoscopic panel and a display module according to an exemplary embodiment of the present invention.
  • the display module is illustrated to have a structure of including 3 sub-pixels, each sub-pixel corresponding to units for displaying red (R), green (G), and blue (B) light rays, in pixel units for displaying the RGB color light rays.
  • the present invention will not be limited only to the exemplary structure shown in Fig. 9.
  • Fig. 9 shows an exemplary structure wherein the stereoscopic panel is configured to have parallax barriers to be repeatedly aligned along a vertical direction.
  • the position adjustment module according to the exemplary embodiment of the present invention may be capable of measuring the relative alignment angle of the stereoscopic panel and the display module. More specifically, the position adjustment module according to the exemplary embodiment of the present invention may acquire a distance (d1) between the parallax barrier of the stereoscopic panel and an image of a specific row or column (a specific column in case of Fig.
  • the position adjustment module may also acquire a distance (d2) between the parallax barrier of the stereoscopic panel and an image of a specific row or column (a specific column in case of Fig. 9) belonging to the display module through an image captured (or taken) by the camera in a 2nd position (or Position 2) (P2).
  • the position adjustment module may use the acquired distances (d1 and d2) and the travel distance (L) of the camera, so as to determine the relative angle alignment state of the stereoscopic panel and the display module.
  • an image may additionally be captured from a 3rd position (or Position 3), which is spaced apart from the line connecting the 2 points along the vertical direction at a predetermined distance.
  • the present invention proposes a method for adjusting the stereoscopic panel and the display module, which may have the following advantages.
  • Fig. 10 and Fig. 11 illustrate examples for describing incorrect alignments of the auto stereoscopic panel and the display module according to an exemplary embodiment of the present invention.
  • the horizontal/vertical position adjustment of the stereoscopic panel and the display module may be performed by using a method of matching a pixel boundary of the display module with a parallax barrier boundary of the stereoscopic module, which observing only a predetermined range of the display module and the stereoscopic panel from a central portion of and the stereoscopic panel and the display module. Therefore, when the alignment positions of the stereoscopic panel and the display module deviates from the predetermined positions in parallax barrier units, as shown in Fig. 11, an error may occur in the subsequent horizontal/vertical alignment from the central portion.
  • Fig. 12 illustrates an example for describing a method for measuring relative angles of the auto stereoscopic panel and the display module and for verifying a boundary region between the auto stereoscopic panel and the display module by using a 3-point measurement according to a preferred embodiment of the present invention.
  • Fig. 12 illustrates an exemplary embodiment of the present invention enabling a boundary deviation shown in Fig. 11, in addition to the relative angle adjustment described in Fig. 9, by first setting up 2 points at a pre-decided interval (or distance) along the positioning direction of the parallax barrier (the vertical direction in case of the example shown in Fig. 12), as shown in Fig. 9, and, in addition to the above-described 2 points, setting up another 1 point spaced apart from any one of the 2 primarily set-up points (or first 2 points) at another pre-decided distance (or interval) so as to be perpendicular to the connection between the first 2 points, and by capturing (or taking) an image from the newly added 3rd point (or 3rd position).
  • the subsequent horizontal/vertical alignment may be performed and checked by simply verifying the positioning status within a predetermined range of the central area of the stereoscopic panel and the display module.
  • 3 points (or positions) shown in Fig. 12 are merely exemplary. Accordingly, 2 points (or positions) being spaced apart from one another at a predetermined distance (or interval) along the horizontal direction, and another 1 point (or position) being spaced apart from any one of the first 2 points may be used.
  • a single camera captures the images by being repositioned to and from each of the above-described 3 points, instead of having 3 different cameras used for each of the 3 points. This will be described in detail with reference to Fig. 13.
  • Fig. 13 illustrates an example for describing a concept of capturing images by moving a single camera according to an exemplary embodiment of the present invention.
  • the process of verifying the alignment status of the relative angles and/or positions through the actual image capturing of the stereoscopic panel and the display module is a concept that has been development due to the crucial effect caused on the 3D effect provided to the user by the most minute difference, which may occur when attaching the stereoscopic panel to the display module.
  • the relative angle and/or position alignment status verification according to the exemplary embodiments of the present invention may vary depending upon the level of red, green, and blue color differentiation and the boundary area recognition rate performed by the camera. Accordingly, even when three cameras of the same standard are used to capture images from the above-described 3 points, as shown in Fig. 13, and even when the captured images are used, the minute difference in color differentiation/color recognition rate among the three cameras may act as error factors in determining the alignment status.
  • the preferred embodiment of the present invention proposes a method of having a single camera moves to and from a pre-decided distance so as to measure the above-described 3 points and to capture images 3 times from each of the 3 points and of using the captured images.
  • the present invention may prevent any error from occurring due to the difference among the 3 different cameras.
  • a method of performing a vertical angle adjustment and a horizontal angle adjustment of a stereoscopic panel having a cell-type parallax barrier structure by using images captured from the above-described 3 points.
  • Fig. 14 illustrates an example for describing a method for adjusting horizontal/vertical angles of auto stereoscopic panels having cell-type parallax barrier structures by using a 3-point measurement according to a preferred embodiment of the present invention.
  • a parallax barrier being activated along the vertical direction and a parallax barrier being activated along the horizontal direction are perpendicular to one another. Accordingly, when a vertical angle adjustment of the stereoscopic panel is performed, as shown in Fig. 12, the horizontal angle adjustment of the stereoscopic panel may also be performed at the same time. However, in some cases, when verifying both the angle adjustments of a vertical pattern and a horizontal pattern of the stereoscopic panel having the cell-type parallax barrier structure, there may be some advantages.
  • FIG. 14 illustrates the concept of performing a vertical angle adjustment by capturing images from 2 different points each spaced apart from one another along the direction of the parallax barrier (along the vertical direction), when the stereoscopic panel has activated the vertical parallax barrier
  • (b) of Fig. 14 illustrates the concept of performing a horizontal angle adjustment by capturing an image from a 3rd point, which is spaced apart from the 2 different points, shown in (a) of Fig. 14, along the horizontal direction, when the stereoscopic panel has activated the horizontal parallax barrier.
  • the above-described relative angle adjustment, boundary area verification, and so on, which are performed at the above-described 3 points, are performed in the boundary area of the stereoscopic panel and the display module.
  • the distance between the points each being spaced from one another along the vertical/horizontal directions is set to a maximum distance in order to perform a more accurate angle measurement (and/or boundary deviation check).
  • Fig. 15 and Fig. 16 illustrate examples for adjusting relative positions between an auto stereoscopic panel and a display module according to an exemplary embodiment of the present invention.
  • the exemplary embodiment of the present invention proposes a method of performing horizontal and vertical position adjustment from the central portion of the stereoscopic panel and the display module, wherein the stereoscopic panel and the display module are processed with the angle adjustment (and/or boundary deviation check). As shown in Fig.
  • a more enhanced 3D picture quality may be provided to the user by aligning the stereoscopic panel and the display module based upon whether or not a specific point of the stereoscopic panel matches with a specific point of the display module at the central portions of the stereoscopic panel and the display module, instead of deciding a horizontal/vertical alignment reference at any one side.
  • the preferred embodiment of the present invention proposes a method of performing a horizontal alignment of the stereoscopic panel and the display module, by designating a pixel boundary line (or edge) at the central portion of the display module as the above-described specific point, and by designating a central line of the parallax barrier located at the central portion of the stereoscopic pattern as the specific point of the stereoscopic panel, as shown in Fig. 16, and by determining whether or not the specific point of the display module matches the specific point of the stereoscopic pattern. More specifically, the exemplary embodiment of the present invention proposes a method of matching the pixel boundary (e.g., between RGB and RGB) of the central portion of the display module with a central line between barriers of the parallax barrier.
  • the pixel boundary e.g., between RGB and RGB
  • the vertical alignment may be performed by matching the specific points of the stereoscopic panel and the display module.
  • a preferred embodiment of the present invention proposes the usage of a camera for verifying vertical/horizontal alignment of the stereoscopic panel and the display module, which includes 2 lenses (1510, 1520), as shown in Fig. 15, and a half-mirror (1530) at a central portion of each lens, so as to observe each object.
  • each of the 2 lenses (1510, 1520) has different verification target region and focus range.
  • the horizontal/vertical alignment status verification and adjustment processes are performed by using the different verification target region and focus range.
  • the 1st lens (or lens 1) (1510) may be used for the purpose of verifying the position of the stereoscopic panel (20) among the attachment objects
  • the 2nd lens (or lens 2) (1520) may be used for the purpose of verifying the position of the display module (10) among the attachment objects.
  • the position adjustment may be more accurately performed.
  • Fig. 17 illustrates a flow chart for showing the process steps of a method for attaching auto stereoscopic display panels according to an exemplary embodiment of the present invention.
  • a horizontal alignment (S1703) and a vertical alignment (S1704) of the stereoscopic panel and the display module may be performed.
  • Fig. 17 shows an example of the vertical alignment being performed after the horizontal alignment, as long as the angle adjustment (S1702) is first performed, the performance order of the horizontal alignment and the vertical alignment is not required to be fixed and limited.
  • the stereoscopic panel may be attached to the display module (S1705).
  • Fig. 18 and Fig. 19 illustrate general views of a jig of an attachment device according to an exemplary embodiment of the present invention.
  • the attachment apparatus jig (1800) shown in Fig. 18 is configured to have the form of a cross, which has an opening (1820) at the center of the cross. Also, the cross-shaped jig may be adhered to the stereoscopic panel by using a plurality of vacuum contact points (1810).
  • the jig (1800) of the attachment apparatus is formed to have the shape of a cross and to have an opening (1820) at the center of the cross-shaped jig (1800) is to facilitate the performance of the relative angle adjustment by verifying the positions of the 3 points (A, B, C of Fig. 18) at the boundary region, when verifying the attachment position of the stereoscopic panel and the display module, and also to facilitate the performance of the position adjustment after verifying the horizontal/vertical alignment positions at the central portion.
  • the attachment apparatus jig (1800) may adjust the attachment points of stereoscopic panels (100A, 100B) of various sizes, as shown in Fig. 19.
  • the attachment apparatus jig (1800) may prevent an attachment fluid (e.g., UV resin) from leaking outside when attaching the stereoscopic panel to the display module.
  • an attachment fluid e.g., UV resin
  • Fig. 20 and Fig. 21 illustrate examples for describing the advantages of an attachment device jig according to an exemplary embodiment of the present invention.
  • an attachment fluid e.g., a UV resin may be deposited between the stereoscopic panel (20) to the display module (10). And, when an excessive amount of pressure is applied during the attachment process, the UV resin may leak to the outside.
  • the vacuum contact points (1810) of the attachment apparatus jig according to the exemplary embodiment of the present invention are each configured to have a movable element that can move along an up-and-down direction at the center of the opening. More specifically, after having each of the vacuum attachment points (1810) adhere (or attach) the stereoscopic panel (20) with its vacuum pressure, when an excessive amount of pressure is applied to the display module (10), the central element of the opening is configured to be pressed and to move upwards.
  • the stereoscopic panel and the display module may be more accurately attached. And, the attachment process may also be performed with accuracy even if the stereoscopic panel and the display module are not completely flat.
  • the present invention will not be limited only to the exemplary embodiments presented herein. And, it should be noted that the present invention is to provide a broadest range matching the principles and novel characteristics disclosed herein.
  • the apparatus and method for attaching the stereoscopic display panels may be used for the stereoscopic display panel attachment applied in diverse display devices, such as computer monitors, wide-screen TVs, and so on.

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

Abstract

L'invention concerne un procédé et un appareil pour fixer des panneaux d'affichage stéréoscopiques automatiques. Plus spécifiquement, l'appareil comprend un module d'ajustement de position, configuré pour mesurer l'angle d'alignement relatif et les positions d'alignement d'un panneau stéréoscopique et d'un module d'affichage, le panneau stéréoscopique étant configuré pour réaliser des barrières parallaxes positionnées de manière répétée le long d'une direction verticale et/ou d'une direction horizontale, le module d'affichage étant configuré pour projeter des rayons lumineux d'image sur le panneau stéréoscopique, et pour ajuster l'angle d'alignement relatif et les positions d'alignement du panneau stéréoscopique et du module d'affichage ; et un module de fixation configuré pour fixer le panneau stéréoscopique et le module d'affichage, une fois que le module d'ajustement de position a ajusté l'angle d'alignement relatif et les positions d'alignement du panneau stéréoscopique et du module d'affichage.
PCT/KR2012/005363 2011-08-10 2012-07-06 Procédé et appareil pour fixer des panneaux d'affichage stéréoscopiques automatiques Ceased WO2013022190A1 (fr)

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KR1020110079457A KR101296688B1 (ko) 2011-08-10 2011-08-10 입체 디스플레이 패널 접합 장치 및 방법
KR10-2011-0079457 2011-08-10

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CN106303500A (zh) * 2015-06-24 2017-01-04 美国技术有限公司 三维显示面板和其制作方法
CN107831598A (zh) * 2017-11-16 2018-03-23 宁波维真显示科技股份有限公司 一种光栅精确对位贴合方法及其装置
CN108696743A (zh) * 2017-03-08 2018-10-23 深圳市易快来科技股份有限公司 一种裸眼3d显示模组检测的方法、装置及系统

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KR102413405B1 (ko) * 2019-08-29 2022-06-27 한국전자기술연구원 출사동 확장이 가능한 반사형 도파관 디스플레이의 제조 방법

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CN107831598B (zh) * 2017-11-16 2020-02-11 宁波维真显示科技股份有限公司 一种光栅精确对位贴合方法及其装置

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