KR101900085B1

KR101900085B1 - Multi layer stereoscopic image display apparatus

Info

Publication number: KR101900085B1
Application number: KR1020150043955A
Authority: KR
Inventors: 강창만
Original assignee: 주식회사 심포니이미징
Priority date: 2015-03-30
Filing date: 2015-03-30
Publication date: 2018-09-18
Also published as: KR20160116395A

Abstract

An embodiment of the present invention relates to a multi-layer stereoscopic image display device, and a technical problem to be solved is a display structure including a multi-layer image and a stereoscopic image, and a display structure including two-dimensional video and three- It is possible to display the depth of the video data and the spatial separation of the depth from the depth image and the stereoscopic image and the spatial separation of the image in a complex manner and further suppress the occurrence of the moiré phenomenon.
To this end, an embodiment of the present invention provides a display device comprising: a first screen for displaying a first image including a left eye image and a right eye image; A second screen disposed to be spaced apart from the first screen to display a second image; And a slit member attached to the first screen facing the second screen and formed in a serpentine shape to output the left eye image and the right eye image to the left and right eyes of a user located in front of the second screen A multi-layer stereoscopic image display device is disclosed.

Description

[0001] MULTILAYER STEREOSCOPIC IMAGE DISPLAY APPARATUS [0002]

The present invention relates to a multi-layer stereoscopic image display apparatus, and more particularly to a multi-layer stereoscopic image display apparatus capable of displaying a depth and a spatial separation of an image in depth from a two-dimensional image and a three- Eye stereoscopic image display apparatus capable of suppressing occurrence of a moire phenomenon.

Recently, 3D image processing technology has been used in various fields such as education, training, medical, movie, and computer game. 3D image is more effective to feel presence feeling, real feeling, and natural feeling than 2D image.

Such a three-dimensional image display device requires a variety of technologies such as an input technology, a processing technology, a transmission technology, a display technology, a software technology, and the like. In particular, Research is necessary.

On the other hand, the most well-known method among the display methods of the three-dimensional image display device is the integral photography method, in which three-dimensional images formed by a fly-eye microlens array are recorded And transmission and reproduction.

1, a conventional three-dimensional image display device includes a microlens array 1 having fly-eye microlenses 2, a microlens array 1, (3) having individual pixels (4) at regular intervals from the pixel (4).

Then, when the two-dimensional projections are emitted from the projection carrier 3 to the vicinity of the focal plane of the microlens array 1, the two-dimensional projections are synthesized while passing through the microlenses 2 of the microlens array 1 The three-dimensional image 5 is displayed.

However, in the integrated photolithography method described above, the image quality of a three-dimensional image is degraded due to a moire effect. Here, the moiré effect is a phenomenon in which periodic patterns generate wave patterns while causing interference phenomena with each other.

In order to solve this problem, there has been an attempt to place a diffuser between two liquid crystal display panels. However, such a diffuser has an advantage of preventing a moire effect due to overlapping of two pixels, There is a problem that sharpness and luminance of 20% to 30% are lost due to the hage characteristic of the transparent display, and the loss ratio of the transparent display is also reduced proportionally, which is not efficient and the implementation rate of the color is also changed considerably .

(Document 1) Application No. 10-2003-7006716 (filed on May 17, 2003) (Document 2) Application No. 10-2003-7014295 (filed on November 01, 2003) (Document 3) Application No. 10-2005-7000758 (filed January 14, 2005)

One embodiment of the present invention relates to a display structure including a multi-layer image and a stereoscopic image, and a display structure for displaying a depth difference between the depth and the stereoscopic image from the two-dimensional image and the three- A multi-layer stereoscopic image display device capable of displaying a composite image of spacing and suppressing the occurrence of a moire phenomenon can be provided.

In addition, an embodiment of the present invention provides a multi-layer stereoscopic image display device that combines multi-layered screens that are selectively transparent and maintain a constant distance and overlap.

In addition, an embodiment of the present invention provides a multi-layer stereoscopic image display device in which the image observed on each screen may be a non-eye stereoscopic display or a transparent display.

In addition, an embodiment of the present invention provides a stereoscopic image display method using an ordinary compression algorithm and a stereoscopic image method using a binocular disparity method and a stereoscopic image method using an N parallax method, in order to individually display images on a superimposed display, The display environment can be dispersed to the display environment of the transparent display at the time of occurrence of the congestion phenomenon of the non-eyeglass stereoscopic image method (at the time of occurrence of dizziness) by displaying an ordinary algorithm on a transparent multi-layer screen for higher image combination And provides a multi-layer stereoscopic image display device capable of avoiding a significant congestion phenomenon.

A multi-layer stereoscopic image display apparatus according to an embodiment of the present invention includes a first screen for displaying a first image including a left eye image and a right eye image; A second screen disposed to be spaced apart from the first screen to display a second image; And a slit member attached to the first screen facing the second screen and formed in a serpentine shape for emitting the left eye image and the right eye image to the left and right eyes of a user located in front of the second screen .

Wherein the second screen is disposed in close contact with the first screen without being separated from the first screen and a polarizing retarding plate for adjusting the linear polarization angle between the first screen and the second screen or between the second screen and the slit member, A film may be provided.

The slit member may be arranged so that the first unit slit facing the user's left eye and the second unit slit facing the right eye are alternated with each other.

The slit member includes a plurality of unit slits, and the unit slit includes a first unit slit facing the left eye of the user and a second unit slit facing the right eye of the user and disposed to be alternated with the first unit slit .

The slit member includes a plurality of unit slits, the unit slit having an inclination angle of 30 to 60 degrees with respect to the reference plane, and the reference plane may be defined as a plane on which the user is located.

The slit member may include a plurality of unit slits, and the unit slit may have a convex embossed shape in the second screen direction.

The slit member may be formed of any one of acrylic, glass, a polarization retardation plate for adjusting the linear polarization angle between the first screen and the second screen, or a film.

The first screen displays a two-dimensional image or a three-dimensional image, and the second screen displays a two-dimensional image, optionally a transparent screen.

A light source that emits light to the second screen may be disposed between the second screen and the first screen.

According to another aspect of the present invention, there is provided a multi-layer stereoscopic image display apparatus including a first screen for displaying a first image including a left eye image and a right eye image; A second screen disposed to be spaced apart from the first screen to display a second image; And a slit member attached to the first screen and formed in a predetermined pattern to output the left eye image and the right eye image to the left and right eyes of a user located in front of the second screen.

The predetermined pattern may be any one of a plaid pattern, a plaid pattern, a sloped plaid pattern, and a slanted plaid pattern that divides the slit member at regular intervals in the longitudinal and transverse directions.

The predetermined pattern may include a plurality of unit slits having the same shape, and the unit slit may have an embossed shape convex in the second screen direction.

The multi-layer stereoscopic image display apparatus according to an embodiment of the present invention can prevent the moire effect and improve sharpness and brightness.

In addition, an embodiment of the present invention can make the implementation of color more realistic and clear.

1 is a view showing a conventional three-dimensional image display apparatus.
2 is a perspective view showing a multi-layer stereoscopic image display apparatus according to an embodiment of the present invention.
3 is an exploded perspective view of the multi-layer stereoscopic image display apparatus of FIG.
FIG. 4A is a view showing the slit member of FIG. 2. FIG.
Fig. 4B is a view showing a modification of the slit member of Fig. 2;
5A and 5B are views showing the operation of the multi-layer stereoscopic image display apparatus of FIG.
6 is a view showing a use state of the multi-layer stereoscopic image display apparatus of FIG.

The terms used in this specification will be briefly described and the present invention will be described in detail.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements as well, without departing from the spirit or scope of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

FIG. 2 is a view showing a multilayer stereoscopic image display apparatus according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of the multi-layer stereoscopic image display apparatus of FIG. 2, FIG. 4A is a view showing the slit member of FIG. 2, FIG. 4B is a view showing a modification of the slit member of FIG. 2, FIGS. 5A and 5B are views showing the operation of the multi-layered three-dimensional image display apparatus of FIG. 2, Fig.

2 to 3, a multi-layer stereoscopic image display apparatus 100 according to an exemplary embodiment of the present invention includes a first screen 102 and a second screen 104, And includes a first screen 102, a second screen 104, a slit member 108, and a polarization retardation plate 106. That is, the multi-layer stereoscopic image display apparatus 100 according to an embodiment of the present invention includes a slit member (not shown) attached on the first screen 102 between the first screen 102 and the second screen 104 108 and a polarization retardation plate 106 selectively inserted between the first screen 102 and the second screen 104 and wherein the first screen 102 and the second screen 104 are at least partially Overlapping.

The first screen 102 and the second screen 104 are arranged to be selectively overlapped, and one or more screens on one side of the transparent display are arranged horizontally and in a grid pattern.

The first screen 102 is a panel for displaying a first image including a left eye image and a right eye image, and may be implemented with various color LCD liquid crystals. The first screen 102 may alternately display the left-eye image and the right-eye image. In addition, the first screen 102 may display a two-dimensional image or a three-dimensional image according to whether the light emitted from the front, rear, or side is divided into left eye or right eye.

The second screen 104 is a panel for displaying a second image positioned at a predetermined distance from the first screen 102, and may be implemented as a transparent LCD liquid crystal display. The second screen 104 may display a two-dimensional image. At this time, the second screen 104 is separated from the first screen 102 by about 2 cm to 4 cm, but may be spaced apart by an interval of preferably 3 cm. Also, the second screen 104 may display a two-dimensional image. Accordingly, the multi-layer non-eyeglass stereoscopic image display apparatus 100 physically overlaps the first image and the second image by disposing the first screen 102 and the second screen 104 at a predetermined distance apart, It is possible to implement a 3D image effect, thereby preventing a congestion phenomenon felt by a user.

Alternatively, the second screen 104 may be disposed so as not to be separated from the first screen 102, but in close contact. Accordingly, the second screen 104 can be formed almost integrally with the polarization retardation plate 106 disposed between the slit member 108 attached on the first screen 102 and the polarizing retardation plate 106 disposed between the second screen 104 and the slit member 108 attached on the first screen 102. Further, an anti-reflection film (not shown) may be disposed between the second screen 104 and the slit member 108 or the first screen 102, which are selectively in contact with each other.

In this case, since the second screen 104 and the first screen 102 are in close contact with each other, the moire effect due to color interference, which may be caused by a distance between the second screen 104 and the first screen 102 Can be significantly reduced.

On the other hand, an LCD liquid crystal is a device for displaying the liquid crystal properties by changing the arrangement of molecules when a voltage is applied. The liquid crystal is injected and arranged in a narrow gap between two glass plates, And a character or an image is displayed by using the optical refraction change occurring at this time. The detailed description will be omitted.

In addition, the first screen 102 and the second screen 104 may be used to display data, such as text, symbols, plain text, images, still and video animation, still and moving video video, .

The first screen 102 and the second screen 104 arrange closed polarization filters on the front and back surfaces of each liquid crystal active element. As a result of this characteristic operation of the liquid crystal display, the plane polarization of the light emerging from the front of the second screen 104 intersects the polarization plane of the back surface of the first screen 102.

In the present invention, polarized light (e.g., polarized light) is applied between the first screen 102 and the second screen 104 in order to rotate the light from the second screen 104 at a required angle and align it with the rear polarizing filter of the first screen 102 A delay plate 106 is provided.

The polarization retardation plate 106 causes a phase angle variation or delay that is less than or equal to the incident light wavelength. In addition, the polarization retardation plate 106 does not generate a clear color interference pattern when used in the present multi-layer stereoscopic image display apparatus 100. [

The polarizing retardation plate 106 has disadvantages such as a lack of unstable exposure to bright light and / or discoloration, manufacturing cost, and brittleness according to time, but in order to compensate for such disadvantages, And is made of a material having properties. Here, the biaxial polypropylene may be made of a transparent and flexible film, but the biaxial polypropylene is not limited to the biaxial polypropylene but may be formed of a lacquer or a coating.

Theoretically, it is possible to arrange the polarization retardation plate 106 anywhere between the first screen 102 and the second screen 104, but using the polarization retardation plate 106 of the same technology as the polyester, 104 on the back side. This is to avoid interference where the diffusion pattern to be applied to the polarization retardation plate 106 deteriorates the image of the multi-layer stereoscopic image display apparatus 100. [ Here, the interference pattern is generated due to the moiré effect, which is interference due to a minute temporal discrepancy between the structural surfaces of the first screen 102 and the second screen 104, and the effect that white polarized light is separated into rainbow colors. In the present invention, the diffusion of light is used to eliminate the interference pattern generated between the first screen 102 and the second screen 104.

The slit member 108 is formed as a separate layer from the polarization retardation plate 106, and is formed in an embossed shape having a predetermined length or a pattern having a predetermined check and line shape. The slit member 108 distinguishes pixels that can be seen by the left eye and the right eye by differently applying the received images so that the stereoscopic feeling can be felt by the binocular parallax without wearing glasses.

The slit member 108 is preferably provided on the front surface of the first screen 102 and is formed in an embossed shape having a predetermined length in a diagonal line. Here, the slit member 108 may be formed by a slit division method including a parallax barrier method and a lenticular method or a tracking method time division method so as to optically distinguish a left image and a right image on the first screen 102, .

More specifically, the slit member 108 includes a plurality of unit slits 108a and 108b. At this time, the unit slits 108a and 108b are arranged so that the unit slit toward the left eye and the unit slit toward the right eye alternate with each other.

The unit slits 108a and 108b include a first unit slit 108a facing the left eye of the user and a second unit slit 108b facing the right eye of the user and alternating with the first unit slit 108a . That is, the unit slits 108a and 108b may include first unit slits, second unit slits, and nth unit slits, which are alternated with each other.

As shown in FIG. 4A, the unit slits 108a and 108b are formed in a serpentine shape so as to have an inclination angle? Of 5 to 85 degrees with respect to the reference plane. At this time, when the unit slits 108a and 108b have an inclination angle? Of 5 degrees or less with respect to the reference plane or an inclination angle? Of 85 degrees or more with respect to the reference plane, the unit slits 108a and 108b are closer to vertical or horizontal , It is difficult to secure a viewing angle as in the conventional stereoscopic display device.

Meanwhile, the reference plane may be defined as a ground on which a user is located.

Further, the unit slits 108a and 108b are formed to have a convex embossed shape in the direction of the second screen 104, that is, forward.

As another example, the unit slits 208a and 208b may be formed as a grid pattern or a check pattern that is partitioned at regular intervals in the longitudinal direction and the lateral direction as shown in FIG. 4B, It may be formed as a slanted checkered pattern.

The material of the slit member 108 is acrylic, glass, LCD, optical retardation plate, and film, each of which can be uniformly and singly composed.

The slit member 108 is adhered to the front surface of the first screen 102. The slit member 108 is bonded to the front surface of the first screen 102 to determine a predetermined thickness and to physically form a gap and a UV liquid curing type front surface, It can be adhered in an adhesive manner through an adhesive having a predetermined thickness such as a slope.

5A to 6, the slit member 108 displays red, green, and blue subpixels in an alternating manner in the row direction in order to display contents separated by N parallax and N parallax, Dimensional image such as a left eye (L), a right eye (R), or an N eye on a flat panel display arranged in such a manner as to be physically attached on such a flat display. Thus, the slit member 108 can physically optically constitute a right eye image in the right eye and a left eye image in the left eye, so that different images are displayed on the eye of the observer so that three-dimensional images can be sensed.

In the multi-layer stereoscopic image display apparatus 100 constructed as described above, when visible light having an average wavelength of 560 nm is used, the retardation of the polarization retardation plate 106 becomes smaller than or equal to 560 nm. Thus, according to the present invention, the polarization retardation plate 106 causes a phase angle delay that is less than or equal to one wavelength of light incident on the multi-layer stereoscopic image display apparatus 100. [ This is also referred to as linear displacement, which is less than or equal to 560 nm of incident light.

Meanwhile, the multi-layer stereoscopic image display apparatus 100 according to the present invention may further include a third screen (not shown).

At this time, the third screen is positioned behind the first screen 102, and at least a portion of the first screen 102 and the second screen 104 overlaps to generate a stereoscopic image display and a normal (2D) image display .

Alternatively, the divergence of the light source may be selectively obtained from the source of polarization for display of the first image on the first screen 102, and further between the first screen 102 and the second screen 104, The illustration is omitted).

Accordingly, the multi-layer spectacle-less three-dimensional image display device 100 according to the present invention includes both processing speed, color, repetition, visual effect, looming, scrolling, flicker fading and size enhancement and change, It includes a vertical plate, a horizontal plate, an oblique plate, a mosaic pattern, a color difference, and a time difference division method. It also includes a binocular parallax system (side by side) And it is possible to selectively display a change of stereoscopic (3D) image in a normal (2D) image.

In addition, a frame member (not shown) made of a polypropylene resin composition may be provided on the rim of the first screen 102 to improve the impact resistance and rigidity of the rim of the first screen 102.

The polypropylene resin composition is a polypropylene impact copolymer composition comprising a polypropylene homopolymer and an ethylene-propylene block copolymer. At this time, the polymers are resins mixed in the polymerization step.

The polypropylene homopolymer maintains the mechanical rigidity of the polypropylene resin composition and imparts an appropriate degree of heat resistance. The polypropylene homopolymer may be included in an amount of 70 to 95% by weight based on the total weight of the polypropylene impact copolymer. If the content of the polypropylene homopolymer is less than 70% by weight, the rigidity of the final polypropylene resin composition may deteriorate and the desired properties of the final product may not be satisfied. When the content exceeds 95% by weight, the content of the ethylene- Is low, it is difficult to exhibit the impact resistance characteristic.

The ethylene-propylene block copolymer is prepared by continuously polymerizing a polypropylene homopolymer in a subsequent series of reaction apparatuses. The ethylene-propylene block copolymer of the present invention has a role of imparting impact resistance to the polypropylene resin composition .

The content of the ethylene-propylene block copolymer relative to the total weight of the polypropylene impact copolymer may be 5 to 30% by weight. When the content of the ethylene-propylene block copolymer is less than 5% by weight, impact resistance is not exhibited. When the content of the ethylene-propylene block copolymer is more than 30% by weight, the stiffness is lowered.

The ethylene content with respect to the total weight of the ethylene-propylene block copolymer is 30 to 70% by weight, preferably 40 to 60% by weight. If the ethylene content in the copolymer is less than 30% by weight, the amorphous portion improving the impact in the polymer block copolymer to be polymerized decreases and the impact resistance property decreases. When the ethylene content exceeds 70% by weight, It is possible to reduce the impact resistance due to the delamination at the time of impact.

The ethylene-propylene block copolymer may have an intrinsic viscosity (dl / g) of 3 to 8 dl / g. The intrinsic viscosity of the ethylene-propylene block copolymer extracted from the decalin solution at 135 ° C. was measured with respect to 4 g of the polypropylene impact copolymer using a viscosity meter. If the intrinsic viscosity is less than 3, the molecular weight of the polymerized ethylene-propylene block copolymer is low, which makes it difficult to absorb the impact. When the intrinsic viscosity is more than 8, it is difficult to polymerize in the reactor.

The polypropylene impact copolymer has a weight average molecular weight (Mw) of 250,000 to 2,000,000. If the weight average molecular weight is less than 250,000, the molecular weight is low and the rigidity is lowered, and the shock absorption is difficult. When the weight average molecular weight is more than 2000,000, polymerization in the reactor is difficult.

As described above, the present invention is not limited to the above-described embodiment, but can be applied to a display device of a multi-layer stereoscopic image display device according to the present invention, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100: multi-layer stereoscopic image display device 102: first screen
104: Second screen 106: Polarization retardation plate
108: Slit member

Claims

In a multi-layer stereoscopic image display apparatus,
A first screen for displaying a first image including a left eye image and a right eye image;
A second screen disposed to be spaced apart from the first screen to display a second image; And
A slit member attached to the first screen facing the second screen and formed in a shape of a quadratic or a predetermined pattern to output the left and right eye images to the left and right eyes of a user located in front of the second screen, Lt; / RTI >
Wherein the slit member includes a plurality of unit slits having an embossed shape convex in the second screen direction,
Wherein the slit member is arranged such that a first unit slit facing the user's left eye and a second unit slit facing the right eye are alternated with each other,
Wherein the second screen is disposed in close contact with the first screen,
A polarizing retardation plate or an anti-reflection film for adjusting the linear polarization angle between the first screen and the second screen is provided between the second screen and the slit member,
The first screen displays a two-dimensional image or a three-dimensional image,
The second screen displays a two-dimensional image, optionally a transparent screen,
And a rim member made of a polypropylene resin composition for improving the impact resistance and rigidity of a rim portion of the first screen provided at a rim of the first screen,
The polypropylene resin composition is a polypropylene impact copolymer composition comprising a polypropylene homopolymer and an ethylene-propylene block copolymer, and the polypropylene homopolymer is contained in an amount of 70 to 95% by weight based on the total weight of the polypropylene impact copolymer The content of ethylene-propylene block copolymer is 5 to 30% by weight based on the total weight of the polypropylene impact copolymer, the ethylene content of the ethylene-propylene block copolymer is 30 to 70% by weight, Wherein the ethylene-propylene block copolymer has an Intrinsic Viscosity (dl / g) of 3 to 8 dl / g, and the polypropylene impact copolymer has a weight average molecular weight (Mw) of 250,000 to 2,000,000. Display device.

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The method according to claim 1,
Wherein the slit member can be formed of any one of acrylic, glass, a polarization retardation plate for adjusting the linear polarization angle between the first screen and the second screen, or a film.

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The method according to claim 1,
Wherein the predetermined pattern is any one of a grid pattern, a check pattern, an inclined grid pattern, and a slanted check pattern that divides the slit member at regular intervals in the longitudinal and transverse directions.

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