CN100520868C - Practical free stereo image display method - Google Patents

Abstract

The present invention relates to a practical method for making and displaying free stereo image by utilizing flat panel display with specific parameter and grating with specific parameter matched with it. The method is characterized in that: the horizontal resolution of the flat panel display is 1366 pixels, the vertical resolution is 768 pixels, the visual dimension is 885.168 mm horizontally and 497.64 mm vertically, the pixel dimension is 0.648 mm horizontally and 0.648 mm vertically, the period (LPI) of the grating is 15.090 to 15.100 per inch, the ratio of the width of the transparent stripe of the grating to the width of the opaque stripe is less than 1/8, the grating has an included angle between 12.30 degrees and 12.80 degrees with the vertical direction of the flat panel display in the stripe direction, the grating is arranged at the front end of the flat panel display and has a distance of 10 mm from the display screen of the flat panel display, and the size of the grating is 920 mm horizontally and 530 mm vertically larger than the visual dimension of the flat panel display.

Description

A Practical Autostereoscopic Image Display Method

Autostereoscopic imaging technology has attracted more and more attention with the development of high-resolution flat panel display technology, and various technologies and means for displaying autostereoscopic images have emerged one after another, such as using a lenticular plate to display autostereoscopic images on a flat panel display. , using rasters to display autostereoscopic images on flat panel displays. However, for a flat panel display with certain parameters, how to make the design of the lenticular mirror plate and grating more accurate, so that it can present a more perfect three-dimensional image effect, and what kind of manufacturing process to use to make it more practical, has become the development of free stereoscopic imaging technology. one of the fetters.

The invention proposes an autostereoscopic image display method for realizing autostereoscopic imaging for a flat panel display with specific parameters by using a specially designed grating.

The present invention will be further described below in conjunction with the accompanying drawings.

Figure 1 is a liquid crystal display or plasma display with specific parameters. Its resolution is 1366 pixels horizontally and 768 pixels vertically, and the size of each pixel is 0.648 mm horizontally and 0.648 mm vertically. The pixel structure is horizontally arranged in red, green and blue, which can be arranged in a row, and each row has only three red, green and blue sub-pixels, and the height of each sub-pixel is 0.648 mm. It can also be arranged in two rows, each row has 3 sub-pixels in total, and the two rows have 6 sub-pixels in total, the height of each row of pixels is 0.324, and every two rows constitute a complete pixel. The viewable size of the LCD or plasma display is 885.168 mm horizontally and 497.64 mm vertically.

1 in Fig. 1 represents the flat panel display of this specific parameter, and it can be plasma display, also can be liquid crystal display. 2 represents the pixels in this flat panel display. Since there are many pixels, for the convenience of expression, each pixel is drawn very large here, but the actual pixels are so small that they can hardly be seen by the naked eye. 3 indicates that the flat panel display must have a fixed 1366 pixels in the horizontal direction, and 4 indicates that the flat panel display must have 768 pixels in the vertical direction. Each pixel is composed of sub-pixels, and two pixel structures can be used: one is composed of a single sub-pixel red, green, and blue, 5 represents the height of red, green, and blue pixels, which is 0.648 mm, and 6 represents red, green 1. The total width of the blue pixels in the horizontal arrangement is 0.648 mm, and the distance between them is evenly divided; the second is composed of two rows of sub-pixels, and 7 represents the height of the red, green and blue sub-pixels of the previous row, which is 0.324 mm, 8 means the height of the red, green, and blue sub-pixels in the next row is also 0.324 mm. The total width is still 6, which is 0.648 mm, and the distance between them is equally divided.

Figure 2 is a grating placed in front of the above flat panel display. The grating is made of transparent and opaque stripes. The ratio of the width of the transparent stripes to the width of the opaque stripes is less than 1:8. These stripes are completely parallel to each other. There is an angle between the direction of the stripes and the vertical direction of the pixels of the flat panel display. The angle is between 12.30 degrees and 12.80 degrees. The best is 12.50 degrees. The period of streak (LPI) is between 15.090 and 15.100 per inch, with the optimum period being 15.095. The period of the fringe is calculated along the direction perpendicular to the direction of the fringe.

10 in Fig. 2 represents grating, 11 represents the height of this grating, is 530 millimeters, and 12 represents the width of this grating, is 920 millimeters. 18 represents opaque stripes, which are black. 19 represents a transparent stripe, which is white. 20 represents the line parallel to the horizontal direction of the pixel in the flat panel display, 16 represents the line parallel to the vertical direction of the pixel in the flat panel display, and 13 represents the angle between the grating direction and 16, and the angle is 12.30 degrees to 12.80 degrees Between, the best is 12.50 degrees. 17 represents the line perpendicular to the parallel direction of the grating, and its angle 11 with the grating is 90 degrees, 15 represents the width of the transparent stripes, 14 represents the width of the opaque stripes, their ratio is less than 1:8, along the direction of 17, The period of streak (LPI) is between 15.090 and 15.100 per inch, with the optimum period being 15.095.

In order to obtain the best stereoscopic image clarity and eliminate fusion errors in the vertical direction, the transparent stripes should be as smooth as possible, which can be achieved by increasing the resolution of the grating production.

Figure 3 shows how this grating is made. The grating can be realized by two methods of photolithography: one is to first make the grating film, and then bond it with the optical glass with a thickness of 2 mm to 5 mm through a UV-cured transparent adhesive. The gas between the film and the glass is completely exhausted by a cold press, and then placed under strong ultraviolet rays to make the adhesive dry thoroughly. Another method is to directly coat the photosensitive adhesive on the optical glass with a thickness between 2 mm and 5 mm, and directly expose and image on the glass according to the above grating parameters to form a grating.

The size of the grating is larger than the viewable size of the flat panel display, which is 920mm horizontally and 530mm vertically. The side of the grating with the grating film faces the side of the flat panel display that displays images, or the side of the grating with photosensitive glue faces the side of the flat panel display that displays images. The distance between the grating and the flat panel display is 10mm.

22 represents the grating made with film according to the optical characteristic parameters of the above grating. The thickness is between 0.1 mm and 0.3 mm. 23 represents optical glass, the thickness is between 2mm and 5mm. 24 is an ultraviolet curing transparent adhesive, which is evenly coated on the glass, 22 is bonded to 23, and put into the pressing roller 24 of the cold press, they rotate according to the direction of 25, so that the film can be The air between 22 and glass 23 is removed, and then the grating is irradiated and dried under strong ultraviolet light.

Figure 4 illustrates how the grating is placed on a flat panel display. The grating has two layers, one of which is a film grating layer, or photosensitive film grating layer, and the other layer is a glass layer. Align the film raster side with the flat panel monitor and maintain a distance of 10mm from the monitor image, this distance is achieved by a spacer mounted on the edge of the flat panel monitor. The gasket and the flat panel display are fixed by strong double-sided adhesive, and the gasket and the grating are also fixed by strong adhesive double-sided adhesive. Finally, the gasket is firmly fixed with the flat panel display by the positioner, so as to prevent the vibration generated during transportation from affecting the positional relationship between the grating and the flat panel display.

29 is a body of the flat panel display, and 27 is a display screen of the flat panel display. 28 is a gasket having a thickness 30 of 10 mm, which surrounds the flat panel display. 23 is a grating plate, wherein the side 22 with the film or photosensitive film faces the display screen 27. 23 is the glass face of the grating, which faces the viewer. One side of 23 is coated with an anti-reflection film to reduce the reflection from the outside and improve the optical head transmittance of the grating.

Fig. 5 illustrates how an autostereoscopic image displayed on the aforementioned autostereoscopic image display is generated. From 32 to 39 are 8 stereoscopic sequence pictures with different parallax, and they can be processed into a stereoscopic frame through image processing method. Using the grating 10 as an optical sieve, the eight stereograms are screened out in sequence. First use grating 10 to sieve image 32 to get 40, then move the grating along the horizontal direction of the grating for a distance of one transparent stripe, continue to sieve 33 to get 41, then shift the grating along the horizontal direction of the grating for a distance of one transparent stripe, Continue to sieve 34, to 42. In this way, the last picture 47 of this stereoscopic frame is screened out. The images screened out are superimposed together to form a free stereo image frame 48, and the frame image is put on the flat panel display for display, and the stereo image can be seen through the grating. Of course, the light sieve mentioned here is just an image processing method: using the grating 10 as a light sieve to process images means that a picture is allowed to pass through the transparent stripes of the grating, while the Where the grating is opaque, the image is not allowed to pass through, which is equivalent to filtering the image according to the optical structure of the grating. All of this can be done with simple image processing software, such as Photoshop software. If it is desired to realize the autostereoscopic display of dynamic images, it is only necessary to process the associated sequence autostereoscopic image frames of different sequences of moving autostereoscopic images.

In one of the embodiments, the SyncMaster 400P liquid crystal television produced by South Korea's Samsung can be used to make a free stereoscopic display. The display resolution is 1366 pixels horizontally and 768 pixels vertically. The pixel width is 0.648mm, and the pixel height is 0.324 x 2mm. The visible size is 885.168mm horizontally and 497.64mm vertically. The ideal autostereoscopic image can be obtained if the grating parameters follow the parameters specified in the specification.

Two of embodiment, can utilize Japan NEC to produce MultiSync LCD4010 liquid crystal television to make free stereoscopic display. The display resolution is 1366 pixels horizontally and 768 pixels vertically. The pixel width is 0.648mm, and the pixel height is 0.648 x 2mm. The visible size is 885.168mm horizontally and 497.64mm vertically. The grating parameters can also obtain ideal autostereoscopic images according to the parameters specified in the specification.

In the third embodiment, the above invention can be implemented after the LTA400w2-L03 40-inch LCD screen produced by South Korea's Samsung is installed with a driving circuit. Because the parameters of the LCD screen are: horizontal 1366 pixels, vertical 768 pixels. The pixel width is 0.648mm, and the pixel height is 0.648 x 2mm. The visible size is 885.168mm horizontally and 497.64mm vertically.

Claims (6)

1. The present invention relates to a flat panel stereoscopic display utilizing specific parameters, characterized in that: the flat panel display has a horizontal resolution of 1366 pixels, a vertical resolution of 768 pixels, and a visual size of 885.168 millimeters horizontally and 497.64 vertically. mm, the pixel size is 0.648 mm horizontally and 0.648 mm vertically, the period of the grating is between 15.090 and 15.100 per inch, the ratio of the width of the transparent stripes of the grating to the width of the opaque stripes is less than 1/8, and the grating is perpendicular to the direction of the stripes of the flat panel display The direction has an included angle, which is between 12.30 degrees and 12.80 degrees. The grating is placed on the front of the flat panel display, but there is a distance of 10 mm from the display screen of the flat panel display. The size of the grating is larger than the visible size of the flat panel display, which is Horizontal 920 mm, vertical 530 mm. 2. The flat panel stereoscopic display according to claim 1, characterized in that: the grating is bonded on the optical glass with a thickness between 2 mm and 5 mm by the grating film through an ultraviolet curing transparent adhesive, and the grating film is bonded Align one side with the display screen of the flat-panel monitor. 3. The flat-panel stereoscopic display according to claim 1, characterized in that: the grating is formed after exposure, development and fixing of optical glass coated with photosensitive adhesive, and the side with the photosensitive film faces the display screen of the flat-panel display. 4. The flat panel stereoscopic display according to claim 1, characterized in that: the grating is bonded to a high 10 mm gasket by strong double-sided adhesive, and the gasket is bonded to the display screen of the flat panel display by strong double-sided adhesive . 5. The flat-panel stereoscopic display according to claim 1, characterized in that: the bonding between the film grating and the optical glass is bonded by ultraviolet curing transparent glue and air is removed through a cold pressure roller, and finally dried by strong ultraviolet radiation. 6. according to the flat panel stereoscopic display of claim 1, it is characterized in that: the image shown on this free stereoscopic image display is to be formed by no less than 8 stereoscopic images with sequential parallax after raster filtering, grating Sequentially process stereoscopic images. After each image is processed, the raster should be moved to the right along the horizontal direction by the width of a transparent stripe.

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