KR20010056539A - Stereoscopic Image Display System Including Stereoscopic Panel with Parallax Barrier and Making the Same - Google Patents

Abstract

PURPOSE: A panel for cubic image using a parallax barrier, a cubic image display device using the same, and a method for manufacturing the same are provided to reduce manufacturing costs by simplifying the structure of a panel for cubic image. CONSTITUTION: A transparent body(30) has a predetermined thickness and transmits light. An integrated image sheet(40) is adhered on one side of the transparent body(30). The integrated image sheet(40) has a predetermined width to a lateral direction. The integrated image sheet(40) forms integrated images by arranging unit pixels extended to a longitudinal direction toward the lateral direction. A parallax barrier sheet(20) is adhered on a side opposite to the side on which the integrated image sheet(40) is adhered. A shielding barrier of the longitudinal direction is formed on one side of the parallax barrier sheet(20).

Description

Stereoscopic Panel using Parallax Barrier, Stereoscopic Image Display Apparatus and Method of Making Stereoscopic Panel Using It {Stereoscopic Image Display System Including Stereoscopic Panel with Parallax Barrier and Making the Same}

The present invention relates to a display device and method for providing a stereoscopic image.

In recent years, research and development on three-dimensional image is very active in various countries around the world, and there are many ways to implement it. There are many ways to implement three-dimensional images (still images and videos), but largely, it can be divided into three types: 1) holography 2) using special glasses for stereoscopic 3) and not using 3D glasses. have.

Among them, the first holography method has the advantage of realizing a three-dimensional image closest to the perfection, but there are disadvantages such as high cost and complicated manufacturing process because it must always be photographed using a laser. Moreover, due to the nature of the laser, it is very dangerous to photograph a person, and it is difficult to photograph outdoor scenery. Second, there are polarized glasses, time-division shutter glasses, and the like, using stereoscopic special glasses. However, relatively simple and inexpensive stereoscopic images can be realized, but there is a disadvantage in that special stereoscopic glasses must be used. On the other hand, the third method that does not use special glasses is currently the most actively researched and developed because of the advantage that the three-dimensional image is implemented without special equipment. Even without using special glasses, 1) Parallax barrier method 2) Lenticular sheet method 3) Space-time partitioning method 4) Combining some of these methods and others .

The present invention belongs to a parallax barrier method that does not use special glasses among the various stereoscopic image implementation methods as described above. The Paraallax barrier method is a plate in which thin slit-shaped openings are arranged side by side and alternately arranged bilateral or multieye images with right and left with proper space on the back. As a method of observing a three-dimensional image with the naked eye through this opening at a viewpoint, there are many similarities to the lenticular sheet method employing a lenticular lens.

As a conventional technology related to stereoscopic implementation using such a parallax barrier, a method of implementing a moving image mainly using a liquid crystal display (LCD) is mainly used. However, most of the existing methods of realizing moving images using parallax barriers or lenticular sheets are too expensive to produce, or when the cost is low, the satisfaction of three-dimensional impressions is largely unsatisfactory for consumer's needs. There was a lot of difficulty. That is, for example, in the case of adopting a binocular parallax barrier or lenticular sheet (US Patent 5,663,831 US Patent 5,825,541 US Patent 5,943,166 JP 7-261119, JP 9-50019) Since the position width of the eye is very limited, there is a disadvantage in that the stereoscopic image is broken or unnatural feeling occurs even if the observer moves a little. If you make a multi-eye image by increasing the composition screen instead of two eyes (US Patent No. 5,945,965 JP 9-102968, JP 9-138370), you can feel the three-dimensional effect in several places, but the production process becomes more complicated and expensive. do. In order to compensate for the shortcomings of the binocular system, a head position tracking system that tracks the position of an observer and changes the image accordingly (Japanese Patent Laid-Open No. 9-197344) may be employed, but this also requires a separate device to be added. It is cumbersome and expensive. In addition, most of the prior art that implements a stereoscopic image as a liquid crystal display screen requires a large number of expensive components such as a liquid crystal display device, a polarizing filter, it is very difficult to provide a practical three-dimensional image display device of low cost.

The present invention is to overcome the disadvantages of the prior art, to provide a practical three-dimensional display device that can provide a high three-dimensional effect, while the manufacturing cost is low, the structure is simple.

Another object of the present invention is to provide a panel for stereoscopic images employed in the stereoscopic image display device, and also to provide a method for producing a panel for stereoscopic images.

1 is a schematic diagram of a stereoscopic image display apparatus using a parallax barrier according to an embodiment of the present invention.

FIG. 2 is a detailed cross-sectional view of a stereoscopic image panel of the display device of FIG. 1. FIG.

3 is a front view of a three-dimensional image panel according to another embodiment of the present invention.

4 is a cross-sectional view of a part of the parallax barrier sheet cut along the line A-A of the three-dimensional image panel of FIG.

FIG. 5 is a cross-sectional view of the parallax barrier sheet portion cut along the line BB of the three-dimensional image panel of FIG. 3. FIG.

6 is a cross-sectional view of a parallax barrier sheet portion of a three-dimensional image panel according to another embodiment of the present invention.

7 is a view showing the principle of stereoscopic imaging for producing an integrated image sheet of a three-dimensional image panel according to the manufacturing method of the present invention.

8 is a conceptual diagram of manufacturing a parallax barrier.

9 is a view showing a principle that the human eye feels three-dimensional.

* Explanation of symbols for main parts of the drawings

20: parallax barrier sheet 30: transparent body

40: integrated image sheet 50: light box

An object of the present invention as described above in the three-dimensional image display device using a parallax barrier, a transparent material of a material having a predetermined thickness and well transmitting light;

A parallax barrier sheet attached to the front surface of the transparent body and having a vertical barrier film printed on the film at regular intervals;

An integrated image sheet attached to a rear surface of the transparent body and arranged and synthesized with unit images at a predetermined interval on a film;

It is achieved by a three-dimensional image panel characterized by having a. According to another aspect of the present invention, a stereoscopic image display device employing the stereoscopic image panel is provided.

Hereinafter, with reference to the drawings, the principle, structure and operation of the stereoscopic image display apparatus using the parallax barrier of the present invention (that is, the stereoscopic effect seen by the observer), the manufacturing method of the stereoscopic image panel and the like will be described in detail.

<Principle and Structure of Stereoscopic Image Display>

The factors that humans feel in three-dimensional sense through vision are very diverse and complex, but they can be divided into physiological factors and psychological memory factors. The physiological factors include recognition factors such as accommodation, monocular motion parallax, binocular convergence and binocular parallax. There is use. Psychological memory factors include geometric stereoscopic vision such as object size, height, superposition, and shape, and optical stereoscopic vision such as contrast, resolution, saturation, and color. Among them, the degree of stereoscopic effect is the largest physiological factors caused by both eyes such as binocular constriction, binocular parallax, and the present invention applies the principle of stereoscopic vision using such parallax.

1 is a schematic diagram of a stereoscopic image display apparatus using a parallax barrier. The stereoscopic image display apparatus 10 according to the exemplary embodiment of the present invention includes a stereoscopic image panel and a light device 50. The panel has a constant spacing between the parallax barrier sheet 20 (parallax barrier sheet, abbreviated barrier) in which the vertical barrier film is disposed at regular intervals, and the spacing between the parallax barrier sheet 20 and the integrated image sheet 40 described later. A transparent body 30 made of a plate for holding, and an integrated image sheet 40 in which two-dimensional images separated and separated at specific intervals are collected. A light device 50 that emits light from the integrated image sheet 40 is provided in the display device. In addition, the display device 10 is provided with a frame 60 covering both sides and the rear and including the panel and the light device 50.

Since the distance between the human eyes 11 and 12 is about 6.5 cm, the horizontal angle of the line of sight when the object is viewed is slightly different. Therefore, the two-dimensional images recorded at different horizontal angles are divided and separated at specific intervals, and the separated parallax barrier sheets 20 and the transparent body 30 are integrated after maintaining the unique horizontal angles. If you look through it, the images of both eyes will be seen at different angles. Such binocular parallax images are recognized as three-dimensional images by the brain. 1 is an enlarged view illustrating a barrier sheet and an integrated image of a panel in a lateral direction for explanation.

Referring to FIGS. 1 and 2, the transparent body 30 of the panel maintains the gap between the barrier sheet 20 and the image sheet 40 and allows both sheets 20 and 40 to be in place, and the frame ( It serves as a substrate so that it is secured to 60). The transparent body 30 may be used as long as it is a transparent plate material that can transmit light well. However, since its characteristics greatly affect an image, selection of the material of the transparent body 30 is very important. Acrylic resins have a good light transmittance, which is very excellent in terms of image clarity and low cost. PET (Polyethylen Terephthalate) resins are easy to adhere to the sheets 20 and 40 and less likely to be damaged. On the other hand, they are disadvantageous in terms of image clarity because of their high cost and low light transmission. Glass is the most permeable but has a high risk of breakage and is too heavy. In an embodiment of the present invention, by discovering and employing adhesives suitable for acrylic resins, such as unsaturated polyester resin-based adhesives described below, an acrylic resin having the most excellent characteristics was selected as the material of the transparent body 30. That is, the present inventors have discovered and selected an adhesive applicable to an acrylic resin having excellent properties as a transparent material, and created a three-dimensional image panel having excellent effects. The thickness of the transparent body 30 varies slightly depending on the material and the use, but in the case of acrylic resin is preferably about 2mm ~ 5mm. It is preferable to use a thin transparent plate to be used in a stereoscopic image display device to be viewed at a close distance, and 4mm to 5mm is preferable for a stereoscopic image display device to be viewed at a distance such as for advertisement or interior use.

1 and 2, an integrated image sheet 40 is attached to the back of the transparent body 30. The image sheet 40 is a form in which an image is printed (fixed or fixed) on one side of the transparent film. The film constituting the integrated image sheet 40 is preferably a film of plastic resin material and is an image film for illumination. Here, the illumination image film is used for exhibitions, advertisements, etc., and refers to an illumination film that displays an image by shining light from behind, and is also commonly called a dura film. (Specific trade names 1) Fujitrans Crystal, Archive Display, Material 2) Agfatrans XA, Display film 3) Ilfocolor, Translucent, LT RA. F7 4) Kodak, Duratrans Ra, and SP901. The name Dura was originally derived from the Kodak product name, but in the art, lighting image films for such purposes are generally referred to as Dura Film. The thickness of the film is preferably 200 μm to 300 μm, and a test film of 212 μm thickness was used. The film thickness of the present invention is not limited thereto. The image printed on the film has a thickness of 0.1 μm to 7 μm, but is not limited thereto.

1 and 2 show an integrated image sheet composed of eight cuts. 1 and 2, an image of 8 cuts is formed to be repeated by dividing the unit width (W). It is preferable that the width of one cut is 60 micrometers-250 micrometers. When attaching to the transparent body, it is preferable that the surface on which the image is fixed is in contact with the transparent body 30, but is not limited thereto.

1 and 2, the barrier sheet 20 is attached in front of the transparent body 30. The parallax barrier sheet 20 is printed on a transparent film, and the material of the film is a plastic resin, and particularly preferably a polyester resin among thermosetting resins. Although the thickness of the film which comprises the parallax barrier sheet 20 is not limited, It is preferable that it is 50 micrometers-200 micrometers, and 104 micrometers film was used at the time of actual manufacture. The thickness of the barrier film 21 printed on the parallax barrier sheet 20 is preferably 0.1 μm to 7 μm. 2 is a cross-sectional view of a three-dimensional image panel. In order to help understanding, the thickness of the printed film is shown in FIG. 2. The barrier film 21 on the parallax barrier 20 film may be formed in either the observer side or the transparent body 30 side, but is formed toward the transparent body 30 so as not to be exposed to the outside for protection of the barrier film 21. The parallax barrier sheet 20 is printed such that the barrier film 21 and the open transparent portion 22 are repeated. The shielding film 21 has a width of the number of cuts (ie, 7 cuts in FIGS. 1 and 2) of which the width is one less than the number of cuts of the integrated image, and the transparent portion 22 has a width of 1 cut. (See FIG. 1) It is preferable that the boundary between the blocking film 21 and the transparent portion 22 coincides with the boundary between the cuts below.

The integrated image sheet 40 and the barrier sheet 20 are bonded by an adhesive, as described later.

The three-dimensional panel in which the integrated image sheet 40 and the parallax barrier sheet 20 are bonded to the transparent body 30 is fixed to the frame 60. The backlight, that is, the lighting device 50 for illumination, has a plurality of lamps 51. The illuminance of the backlight is preferably at least 7,000 lux.

Until now, an embodiment of the invention consisting of the parallax barrier sheet 20, the transparent body 30, and the integrated image sheet 40 as a three-dimensional panel has been described, but according to another embodiment of the present invention, if necessary, additional It is required to provide a stereoscopic image panel having both a structure and a new function. When the stereoscopic image display device 10 is used outdoors, the stereoscopic image is not properly seen due to the intense sunlight than the backlight 51 during the day, and the printed surface on the barrier sheet 20 is exposed as it is. Therefore, when a three-dimensional image panel in which other letters, symbols, figures, etc. are additionally printed on the parallax barrier sheet 20 is configured, the contents written on the parallax barrier sheet 20 can be used as advertisements or notice boards during the day. It is more effective because it can be used as a 3D image display device at night. In addition, even when the stereoscopic image display device 10 is used indoors, only the content printed on the parallax barrier sheet 20 is visible when the backlight 51 is turned off, and the stereoscopic image is displayed when the backlight 51 is turned on. You can also make When the backlight 51 is turned on, the content written on the parallax barrier sheet 20 together with the stereoscopic image may be displayed together.

FIG. 3 is a front view of a stereoscopic panel according to another embodiment of the present invention, and FIG. 4 is a cross-sectional view of a parallax barrier sheet portion cut along a line A-A of the stereoscopic panel of FIG. FIG. 5 is a cross-sectional view of the parallax barrier sheet portion cut along the line BB of the three-dimensional image panel of FIG. 3. For example, assuming that the letter 'H' is written on the parallax barrier sheet 20 and referring to FIGS. 3 to 5, the barrier layer 21, the transparent portion 22, Notation 23 will appear alternately. In this case, the interval, width, etc. of the blocking film 21 and the transparent part 22 except for the marking part 23 are the same as those of the above-described embodiment described with reference to FIGS. 1 and 2, but the marking part 23 is continuous without the transparent part. It consists of. That is, since the blocking film 21 and the transparent portion 22 are not separately formed on the marking portion 23, the dotted line display portion 22a in FIG. 3 is also represented by the opaque marking portion 23. In the above-described embodiment without the marking unit 23, the blocking film 21 is most preferably composed of black. However, since the blocking film 21 may be a dark opaque color, in this embodiment, the blocking film 21 and the marking are not shown. The unit 23 is preferably composed of different dark colors. For example, the blocking film 21 may be printed in dark blue, and the marking part 23 may be printed in dark red. However, when printing the marking unit 23 to match the background part (overlapping part with the marking part of the barrier sheet) on the integrated image sheet 40, the complementary color relationship or the like is harmonized with the color of the background screen. In consideration of the color of the marking unit 23 should be selected. The printing method of the blocking film 21 and the marking part 23 will be described later in the 'manufacturing method of a three-dimensional panel.'

In the above-described embodiment, only the configuration in which the notation portion 23 has no transparent portion has been described as an example, but the present invention is not limited thereto. That is, unlike the above embodiment, a transparent part corresponding to the transparent part 22 may be provided on the marking part 23. In this case, the dotted line display portion 22a in FIG. 3 constitutes a transparent portion. In addition, the notation unit 23 may not be configured on the parallax barrier sheet 20 only with letters, symbols, figures, or the like, but may be configured with an image such as a picture or a picture. In this case, a letter or image printed on the parallax barrier sheet 20 or a three-dimensional image by the integrated image sheet 40 may be selectively displayed during day or night or when the backlight is turned off and on. It may work. In another embodiment of the present invention, the barrier film itself may be configured as an image such as a picture.

6 is a cross-sectional view of a parallax barrier sheet portion of a three-dimensional image panel according to another embodiment of the present invention. In the present exemplary embodiment, the marking unit is not formed on the parallax barrier sheet 20 side by side with the blocking film and the transparent unit, and the marking unit 71 is printed on the transparent marking sheet 70 separately, so as to be placed on the parallax barrier sheet 20. Adhesion was configured. Also in this case, the marking portion 71 on the marking sheet 70 and the blocking film 21 on the parallax barrier sheet 20 may be formed of different dark colors, and may be selected in consideration of the color of the background screen. The material of the marking sheet 70 is the same as the parallax barrier sheet 20. It is preferable that the marking portion 71 printed on the marking sheet 70 faces the parallax barrier sheet 20.

<Method of manufacturing three-dimensional image panel>

Approximate manufacturing method of the three-dimensional panel of the present invention is 1) three-dimensional imaging step 2) image input and correction, synthesis step 3) parallax barrier sheet production and integrated image printing step 4) bonding of barrier, transparent body, integrated image sheet Can be divided into:

The first stereoscopic imaging step is to take a plurality of images while moving the camera horizontally. By using a photographing apparatus, a fixed horizontal distance is fixed and the horizontal angle is changed to record an image. The camera can also use a normal camera. In other embodiments, a digital camera may be used. It is desirable to use automated robots and computer controllers to capture multiple horizontally shifted images faster. In the case of a composite image of eight cuts, as shown in FIG.

Referring to FIG. 7, a still life landscape 100 composed of several objects may include a front foreground 110, a middle mirror 120, and a rearmost view according to perspectives from cameras 210, 220, and 230. It may be divided into a rear mirror 130. In this case, when the landscape 100 is photographed while the camera is horizontally moved in a direction perpendicular to the line of sight, an image in which the positions of the foreground 110, the middle mirror 120, and the rear mirror 130 are slightly changed may be obtained. For example, in FIG. 2, when the camera 210 is photographed on the left side, the image 310 shown on the left side, when the camera 220 is photographed on the center, the image 320 shown in the middle, and the camera 230 on the right side ), The image 330 shown on the right comes out. In this way, each image taken with different horizontal angles is separated at regular intervals to form an integrated image plane. As the number of images taken while moving horizontally with respect to one landscape increases, it is possible to produce an integrated image having a more improved three-dimensional effect.

The second step of inputting, correcting and compositing images is to scan and print the images to the size according to the size of the image by scanner and digitally input them into a computer, and then correct and synthesize the input images using the computer. . First, two-dimensional images are scanned in order. The data of each cut is modified by image processing software, and the input data is gathered in order by using image synthesis software. In this case, as shown in FIG. 1, 8 shots are required and the focus is matched, that is, one point (reference point) of the subject used when focusing when taking a picture is matched in all the cuts. Then, after cutting each two-dimensional image in the vertical direction so that all the cuts become the unit width W, one cut is taken from each cut one by one (1 to 8 in Figs. 1 and 2) and synthesized into one image. That is, the image at the position indicated by the number 1 in Figs. 1 and 2 takes a piece extending in the vertical direction at the corresponding position of the first cut. Pieces of image corresponding to the position indicated by the number 1 of the other cut are discarded. The image at the position indicated by the number 2 in turn takes an image fragment extending in the vertical direction at the corresponding position of the second cut. In this form, the image pieces are taken from the cut corresponding to the corresponding position to form a composite image.

The third parallax barrier sheet manufacturing and integrated image printing step is a step of outputting and printing the image data synthesized with the barrier film of the parallax barrier sheet 20 on the film.

8 is a conceptual diagram of manufacturing the parallax barrier sheet 20. It is not for the actual structure, but for the sake of explaining the relationship between the integrated image data and the barrier blocking film and is shown for convenience. Since the blocking film 21 of the parallax barrier sheet 20 serves to transfer the image by partially covering the image synthesized on the integrated image sheet 40 according to the position of the observer's eye, the number of cuts of the synthesized image In the same interval as the other cuts except for one cut in to paint with an opaque color to produce. In FIG. 8, for example, the remaining images are hidden so that only one image can be seen at the observer's eye position among the integrated images composed of eight cuts.

First, the photoresist is exposed on the film of the barrier in accordance with the width of the blocking film 21 and the width of the gap transparent portion 22, and is exposed by a laser. Thereafter, when developing and printing, a positive image is obtained in which the light-blocked portion remains as a black blocking film 21.

An integrated image synthesized as one is developed and printed by laser on a film similarly to a barrier sheet manufacturing method, and output as a positive image. Since the brightness of the original image is 100% because the backlight is used, the output should be reduced to about 30% and output slightly darker so that the light box 50 is displayed closer to the original image. The printer used for the integrated image output generally obtains the best image by using a laser printer, but a three-dimensional image can also be realized by using an inkjet printer.

In another embodiment of the three-dimensional image panel illustrated in FIGS. 3 to 5, the marking portion 23 is printed on the parallax barrier sheet 20 by printing the blocking portion 21 and the blocking layer on the parallax barrier sheet 20. 21, the transparent part 22 and the notation part 23 appear side by side. In this case, the printing method may use a conventional printing method such as offset printing in addition to the development after the laser exposure, the printing method, and the inkjet printer.

In another embodiment of the stereoscopic panel illustrated in FIG. 6, the marking unit 71 is printed on a separate marking sheet 70. The method of printing the marking unit 71 on the marking sheet 70 is the same as the method of printing the blocking film 21 on the parallax barrier sheet 20.

When printing the barrier film 21, the marking part 23, the integrated image, etc. on the parallax barrier sheet 20, the integrated image sheet 40, or the marking sheet 70, UV ink (an ink which blocks ultraviolet rays) You can also print using). Printing with UV ink improves durability especially when the stereoscopic image display device 10 is installed outdoors.

A fourth step of attaching the barrier, the transparent body, and the integrated image sheet is to attach the parallax barrier sheet 20 and the integrated image sheet to both sides of the transparent body 30.

An adhesive is used to attach the parallax barrier sheet 20 and the integrated image sheet 40 to the transparent body 30. Examples of the adhesive include unsaturated polyester resin adhesives, polyurethane resin adhesives, epoxy resin adhesives, double-sided tape or acrylic resin-based spray adhesives, and styrene butadiene adhesives. have.

The unsaturated polyester resin adhesive is a 200: 1 solution of BPO (Benzol Per Oxide) which is a stock solution containing 55% to 65% unsaturated polyester resin and 35% to 45% solution of styrene monomer. Use what was blended with. When used as an adhesive, the image does not bleed, and there are no other chemical or physical changes on the barrier and image film, and it adheres well within a short time (about 6 hours).

The polyurethane resin adhesive is used by mixing a polyether polyol or a polyester polyol with a curing agent in a polyurethane prepolymer (subject) solution, so that discoloration or change does not occur even in a long term adhesion state.

The epoxy resin adhesive is used by mixing 90% of a polyamide component and 10% of a diluent in a ratio of 1/5 to an epoxy resin solution.

The method for adhering the parallax barrier sheet 20 and the integrated image sheet 40 according to an embodiment of the present invention is as follows. First, the printed integrated image sheet 40 is placed on the transparent body 30, the adhesive is applied, and then adhered by pressing with a roller. The parallax barrier sheet 20 is exactly aligned on it (Align). Thereafter, the parallax barrier sheet 20 is fixed with a tape, and then an adhesive is applied and adhered with a compression roller. It is not necessary to fix only with tape when temporarily fixing. After marking with a printing mark or the like, a method of applying and adhering an adhesive may be used. When aligning the barrier sheet, it is possible to align at the position where the three-dimensional effect is greatest with the naked eye. In order to match more precisely, it may be aligned using equipment such as a magnifying glass or a microscope.

As described above, when the parallax barrier sheet 20 and the integrated image sheet 40 are bonded to the transparent body 30 to produce a three-dimensional panel, the distance between the parallax barrier and the image can be easily maintained. Therefore, since a separate part for supporting or fixing them is not necessary, a stereoscopic panel can be configured much more simply.

In another embodiment of the stereoscopic panel illustrated in FIG. 6, the marking sheet 70 on which the marking unit 71 is printed is further bonded on the parallax barrier sheet 20. The type of adhesive used in the bonding and the post-bonding crimping method are the same as in the case of bonding the parallax barrier sheet 20 to the transparent body 30.

After each sheet is bonded, the light box 50 is attached to the back of the integrated image sheet 40 and installed to examine the effect of the three-dimensional effect. The lamp 51 installed in the light box 50 may have a brightness of more than 7000 lux to properly provide a three-dimensional effect. Light box 50 may be used to be made of a general-purpose, it is more preferable to use a special reflector to increase the brightness.

<Relationship between the three-dimensional effect seen by the observer and each component of the panel>

In the three-dimensional image panel and the display device as described above, the characteristics of each configuration to more effectively feel the three-dimensional effect when viewed from the observer's point of view are as follows.

As mentioned above, the distance between the left and right eyes 11, 12 of a person is about 6.5 cm, and the image of the object seen by each eye is different. Referring to FIG. 1, the horizontal angle and resolution of the line of sight vary depending on the width, distance, separation distance, and image placement interval between the observer and the image and the barrier film 21 of the parallax barrier sheet 20. do. In addition, it is possible to determine the width of the transparent portion between the blocking film 21 and the unit width W of the image arrangement based on the pixel Pixel which is the minimum unit of the image. In this case, the resolution (DPI) should be adjusted in consideration of the size of the production, the type of the image, and the like. In general, the shorter the viewing distance, the higher the resolution, and the longer the viewing distance, the lower the resolution may be. The resolution of the image is produced in the range of 100 DPI to 400 DPI on the basis of Dot Per Inch (DPI).

The number of separate unit images constituting the integrated image, that is, the number of photo cuts, may theoretically provide at least two or more stereoscopic effects. However, in the case of two unit images, the observer's eye position in the three-dimensional image is extremely limited, so that the three-dimensional image is broken or very unnatural even if the viewer looks at another place or moves a little. Therefore, the larger the number of unit images constituting the integrated image, that is, the larger the number of photo cuts taken while moving horizontally, the wider the position range of an observer who looks in a three-dimensional image and the more natural three-dimensional effect can be provided. However, if the number of unit images is too large, the manufacturing process may be complicated or the stereoscopic image may become dark, so about 5-10 is preferable. In the present embodiment including FIG. 1, eight examples have been described, but the present invention is not limited thereto and may be more or less than this.

The distance between the blocking film 21 of the barrier 20 and the integrated image sheet 40, that is, the thickness of the transparent body 30, affects the position of the observer who feels three-dimensional. As mentioned above, in general, the longer the viewing distance, the thicker the transparent body 30, and the shorter the viewing distance, the thinner the transparent body 30 is.

9 is a view showing one of the principles that the human eye feels three-dimensional. In general, the larger the angle between the eyes of the person viewing the object, the more it protrudes forward, and the smaller the angle, the backward it appears. As illustrated in the drawing, the image of the object to be manufactured will be described by dividing it into a foreground (F), a key subject (K), and a back ground (B).

The image FR of the foreground seen by the right eye 11 of the person and the image FL of the foreground seen by the left eye 12 are different from each other on the integrated image sheet 40. Therefore, the entire foreground image is focused at the position F in front of the integrated image sheet 40, so the human brain feels that the foreground is protruding forward. In the case of Chong Kyung, both eyes 11 and 12 see the same image K on the integrated image sheet 40 and the focus is also made there, so it feels as if there is an image at the position of the integrated image sheet 40. In the case of the rear view, the image BR seen by the right eye 11 and the image BL seen by the left eye 12 are different on the integrated image sheet 40, and the focus is behind (B) than the integrated image sheet 40. As a result, the image of the rearview mirror perceived as a whole is felt as if it is back. Therefore, a three-dimensional feeling is felt as a whole.

In the embodiments of the present invention, when the object of the size 30cm, the effective viewing distance is 3m ~ 6m, the visible feeling is about 30cm protrudes in the foreground and the rear diameter is about 50cm retreat. As the size of the object to be manufactured increases, the visible spatial feeling also increases proportionally. In addition, in the other exemplary embodiments illustrated in FIGS. 3 to 6, since the contents printed and displayed by the marking units 23 and 71 are focused at the position of the middle mirror K, the backlight 51 is turned off. When viewed without a three-dimensional image or when viewed with a three-dimensional image of the background provides a natural looking effect.

As an embodiment of the present invention, only one implementation of a stereoscopic image has been described as an example, but the present invention is not necessarily limited thereto. As another embodiment of the present invention, two or more different still images may be synthesized to display different images according to the direction in which the viewer views, or may be implemented to look like moving images as the viewer moves. (For example, a method of compositing an image of a bent arm and an image of an arm unfolded, such that the viewer appears to bend and release the arm as it moves, etc.) This embodiment is also possible by synthesizing digital data on a computer. However, only the process of inputting and composing images is slightly different, and other manufacturing processes are almost the same as in the previous embodiment.

The stereoscopic panel using the parallax barrier of the present invention, the stereoscopic image display apparatus and the method of manufacturing the stereoscopic panel using the same have the following effects and advantages.

First, without the hassle of wearing special glasses, etc. to see the three-dimensional image, anyone can easily enjoy the three-dimensional image. Second, since the parallax barrier is simple to manufacture among three-dimensional implementation methods without special glasses, the production cost is much lower and easier to manufacture than other methods employing lenticular sheets or hologram elements. Third, the unit image constituting the integrated image representing the three-dimensional image can be implemented with a sufficient number of two or more, so that the viewing range for the three-dimensional feeling is wide, and even if the viewer moves without adding a separate device such as a head position tracking device, There is no breakage or unnatural feeling. Fourth, since the three-dimensional image is implemented by attaching the film to the transparent body, the production cost does not increase much even if the number of unit images is increased, and a separate means for maintaining the parallax barrier and the image plane at regular intervals is unnecessary and polarized. No expensive parts such as filters are required. Fifth, since the film is attached to the transparent body, it is easy to manufacture and has excellent three-dimensional effect and durability of the product. Sixth, if you configure a three-dimensional image panel printed on the parallax barrier sheet or other letters, symbols, shapes, etc. separately on the parallax barrier sheet, the three-dimensional image and separate advertisements or notice boards are alternated indoors and outdoors during the day and night. Since a portion of the stereoscopic screen can be used together with the background and displayed together, a stereoscopic image display device having more various effects and practicalities can be provided.

Overall, compared with the existing stereoscopic image display devices, it is possible to provide high-performance stereoscopic images through a simple manufacturing process at a low cost and has high practicality and excellent product competitiveness.

Claims (16)

As a three-dimensional image panel adopting a parallax barrier, A transparent material having a predetermined thickness and transmitting light well; An integrated image sheet attached to one surface of the transparent body, the unit images having a constant width in a horizontal direction and vertically extending unit images continuously arranged in a horizontal direction and provided with a synthesized image; A parallax barrier sheet formed on a surface opposite to the surface to which the image sheet is attached, and having a vertical blocking film formed on one surface thereof so that the transparent portion equal to the unit image width is repeated at a predetermined interval; Panel for stereoscopic images, characterized in that it comprises a. The three-dimensional image panel according to claim 1, wherein the transparent body is made of an acrylic resin material. The stereoscopic panel according to claim 1, wherein the barrier sheet is provided with a marking unit such as a separate letter, symbol, or figure. The stereoscopic image panel according to claim 1, further comprising a writing sheet attached to one side of the parallax barrier sheet and provided with a marking part such as a separate letter, symbol, or figure. The stereoscopic panel according to any one of claims 1 to 4, wherein the parallax barrier sheet is made of a thermosetting resin film, and the blocking film is developed and printed by a laser beam. The stereoscopic panel according to any one of claims 1 to 4, wherein a barrier film printed on the film of the parallax barrier sheet is formed on an opposite side of the viewer. The three-dimensional image panel according to any one of claims 1 to 4, wherein the transparent body has a thickness of 2 mm to 5 mm. The stereoscopic image panel according to any one of claims 1 to 4, wherein the integrated image sheet is formed by developing and printing an image by a laser beam on a film of transparent plastic resin. A stereoscopic image display device employing a parallax barrier, comprising: the three-dimensional image panel according to any one of claims 1 to 8, and a light device for illuminating light from an image sheet of the three-dimensional image panel. Stereoscopic image display device. As a manufacturing method of a three-dimensional image panel employing a parallax barrier, Preparing a two-dimensional image of several cuts by photographing an object at a plurality of preset positions while moving the camera substantially horizontally; An image input step of digitalizing the two-dimensional images; Processing data to focus the two-dimensional images; Cutting the images of each cut vertically to have a unit width, selecting unit images from each cut, sequentially selecting one unit image from each image, and composing them into one image; Fixing the synthesized integrated image on a transparent film to prepare an image sheet; Preparing a parallax barrier sheet by forming a vertical barrier film at a predetermined interval so that transparent portions having a unit width at regular intervals appear on the transparent film; Attaching the parallax barrier sheet and the integrated image sheet to both sides of a transparent material having a predetermined thickness and transmitting light well; Method for producing a three-dimensional image panel comprising a. The method of claim 10, wherein the preparing of the parallax barrier sheet comprises forming a barrier layer by exposing the photoresist on a transparent film with a laser and then developing and printing the same. The method for manufacturing a stereoscopic image panel according to claim 10, wherein the preparing of the integrated image sheet is performed by exposure to a laser beam on a transparent film, followed by development and printing. The method of claim 10, wherein the parallax barrier sheet and the integrated image sheet are attached with an adhesive in the step of attaching to the transparent body, wherein the adhesive is an unsaturated polyester resin adhesive, a polyurethane resin adhesive, an epoxy resin. A method for producing a three-dimensional image panel, comprising: any one of an adhesive, a double-sided tape, an acrylic resin-based spray adhesive, and a styrene butadiene adhesive. The method of claim 13, wherein the unsaturated polyester resin (Polyester resin) adhesive is a mixture of 55% to 65% unsaturated polyester resin and 35% to 45% solution of styrene monomer to the BPO (Bensol Per Oxide) other material The manufacturing method of the three-dimensional image panel characterized by using the thing mix | blended in 200 to 1. The method for producing a three-dimensional image panel according to claim 13, wherein the polyurethane resin adhesive is used by mixing a curing agent polyether polyol or polyester polyol with a polyurethane prepolymer solution. The method for manufacturing a three-dimensional image panel according to claim 13, wherein the epoxy resin adhesive is used by mixing 90% of a polyamide component and 10% of a diluent in a ratio of 1/5 to an epoxy resin solution.