JPH07209754A - Joint minimizing method of multivision device - Google Patents

Abstract

PURPOSE:To enhance the display grades of videos by minimizing the joint width of a large-sized screen. CONSTITUTION:The large-sized screen 3 is formed by joining the end faces of four sheets of Fresnel lens sheets 10a to 10d to form a combined Fresnel lens sheet 8, adhering the end faces of two sheets of lenticular sheets 9a, 9b to form a combined lenticular sheet 7 and superposing these sheets 8, 7 on each other. An adhesive surface 12a in a transverse direction and an adhesive surface 12b in a longitudinal direction are generated as the adhesive surfaces of the Fresnel lens sheets 10a to 10d. The screen is provided with a vertical partition plate 14 along adhesive surface 12a and a lateral partition plate 13 along with this adhesive surface 12b, respectively. The vertical partition plate 14 is supported at plural points on a transverse frame 21. The vertical partition plate 14 is adjusted to be made flush with the adhesive surface 12a by these supporting means. The lateral partition plate 13 is also supported at plural points on a longitudinal frame 20. The lateral partition plate 13 is adjusted to be made flush with the adhesive surface 12b by these supporting means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen for a large screen of a multi-vision device, and more particularly to a method for minimizing the width of joints by a partition plate.

[0002]

2. Description of the Related Art In a conventional multi-vision device,
Images are enlarged and projected from the plurality of projection units on the back of the screen, and a large-screen composite image is displayed on the screen.

However, as the screen size of the displayed image increases, the screen area inevitably increases, and it is important to form the entire screen with a single sheet member. It becomes difficult from the standpoints of constraints, productivity, and production equipment.

For this reason, as a screen in a multi-vision device for a large screen, for example, an actual Kaihei 3-901 is used.
As in the multi-screen device disclosed in Japanese Patent Publication No. 84, a plurality of small-area screens (hereinafter referred to as unit screens) are arranged adjacent to each other with their front surfaces aligned.
By inserting the end of the connector into the groove of the connector and fixing it,
It is common that unit screens are connected together to form one large screen screen. Each such unit screen corresponds to a projection unit, and such a connector is a partition plate that partitions the formed large screen screen into unit screens.

In such a multi-screen device, in order to make the partition by the connector inconspicuous on the screen, the connector is made of a light diffusing material having a desired light transmittance, and its shape is devised. The amount of light transmitted is set to be appropriate, that is, the average amount of light at the edges of the adjacent unit screens is set.

[0006]

By the way, in the above multi-screen device, the shape of the partition by the connector is made to be inconspicuous by the width of the non-video band (ie, joint) on the screen by the connector. The width of the fitting must also be less than a certain width, so that it is less than a certain width. However, even if the connector is made of a rigid material such as metal to increase the mechanical strength, but if the joint width is too narrow, it is a large screen and the connector becomes long and bends under its own weight. However, the linearity cannot be maintained due to variations in the manufacturing process. Therefore, there is a limit to narrowing the joint.

From this, as the screen of the multi-screen device becomes larger, the joint width must be widened, and as a result, the joint becomes conspicuous and the display quality of the image of the multi-vision device deteriorates. I will let you.

An object of the present invention is to solve such a problem and to make it possible to reduce the width of the joint caused by the partition plate for partitioning the projection units so as not to be conspicuous even if the screen is enlarged. Another object of the present invention is to provide a joint minimization method for the multi-vision device.

[0009]

In order to achieve the above object, the present invention forms a large screen screen by adhering the edges of a plurality of adjacent unit screens to each other with an adhesive.
A partition plate is provided along the bonding surface of the screen of the large screen generated by such bonding, and the screen of the large screen is partitioned for each projection unit, and the partition plate is supported at a plurality of points by each supporting means. Position adjustment is possible.

Further, according to the present invention, the partition plate is supported by a frame with an adjusting screw to form the supporting means, and the partition plate can be displaced by operating the adjusting screw.

Further, according to the present invention, the thread is stretched in parallel with the above-mentioned bonding surface.

Further, according to the present invention, the partition plate and the thread can be seen from the supporting means.

[0013]

Since each part of the partition plate can be displaced by the supporting means, the entire partition plate can be aligned with the adhesive surface, and high straightness can be obtained even if the partition plate is thin enough to bend under its own weight. be able to.

Further, the above-mentioned adjustment can be easily performed only by operating the above-mentioned adjusting screw.

Further, the partition plate can be adapted to the adhesive surface with the thread as a reference, which facilitates the work.

Furthermore, since the yarn and the partition plate can be seen from the supporting means side, the partition plate can be easily fitted to the yarn.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a partially developed appearance of a multi-vision device using an embodiment of a joint minimization method of the multi-vision device according to the present invention, where 1 is a screen device and 2 is a screen. Frame 3, 3 screen, 4 top plate, 5 front plate, 6 side plate, 7 combined lenticular sheet, 8 combined Fresnel lens sheet, 9a, 9b lenticular sheet, 10a-10d Fresnel lens sheet (however, Fresnel lens sheet 10b is not shown), 11 is a lenticular sheet bonding surface, 12a,
12b is a Fresnel lens sheet bonding surface, 13 is a left / right partition plate, 14 is an upper / lower partition plate, 15 is a leveler, and 16 is a base plate.

In the figure, a screen device 1 is mounted on the front surface of a casing composed of a top plate 4, a front plate 5, and a side plate 6, and four projection units (not shown) are installed in the casing. , Two are arranged in the vertical direction. Further, the housing is mounted on the base plate 16 via a leveler 15 for adjusting the height and the levelness of the housing.

In the screen device 1, a screen frame (not shown), which will be described later, is attached to the front surface of the screen frame 2, and the screen 3 is attached to this screen frame.
The right and left partition plates 13 and the upper and lower partition plates 14 which are orthogonal to each other are fixed to the screen frame on the back side of the screen 3, that is, on the side of the housing. The left and right partition plates 13 and the upper and lower partition plates 14 partition the space in the screen frame 2 into four spaces corresponding to the projection units.

The screen 3 is a combination of the combined lenticular sheet 7 and the combined Fresnel lens sheet 8. The combined lenticular sheet 7 is on the front side in the drawing. The combined lenticular sheet 7 is a combination of two lenticular sheets 9a and 9b of the same shape and the same size, which are arranged on the left and right on the same plane, by adhering their end faces with an adhesive. The bonded portion is the lenticular sheet bonding surface 11.
The combined Fresnel lens sheet 8 has four Fresnel lens sheets 10a to 10d of the same shape and the same size (two Fresnel lens sheets 10b are not shown) arranged next to each other on the same plane. The end faces of the matching sheets are combined by an adhesive agent to be combined, and these adhesive portions are Fresnel lens sheet adhesive surfaces 12a and 12b which are orthogonal to each other.

The lenticular sheet 9a is equal to the total area of the two Fresnel lens sheets 10a and 10c, and the lenticular sheet 9b is also the two Fresnel lens sheet 1.
It is equal to the total area of 0b and 10d. The combined lenticular sheet 7 and the combined Fresnel lens sheet 8 are stacked with their outer shapes aligned and attached to the screen frame. Therefore, the horizontal Fresnel lens sheet adhesive surface 12a bisects the combined Fresnel lens sheet 8 in the vertical direction, and the vertical Fresnel lens sheet adhesive surface 12b bisects the combined Fresnel lens sheet 8 in the horizontal direction. The lenticular sheet bonding surface 11 that divides the combined lenticular sheet 7 into two parts in the left-right direction overlaps the Fresnel lens sheet bonding surface 12b in the vertical direction.

The left and right partition plates 13 are provided along the lenticular sheet adhesive surface 11 and the Fresnel lens sheet adhesive surface 12b, and the upper and lower partition plates 14 are provided along the Fresnel lens sheet adhesive surface 12a.

FIG. 2 is a front view showing how the combined lenticular sheet 7, combined Fresnel lens sheet 8, left and right partition plates 13, upper and lower partition plates 14 and the like are attached to the screen frame in the screen device 1 shown in FIG. 17 is a screen frame, 18a and 18b are support fittings, 19a and 19b are blocks, 20 is a vertical frame, and 21 is a horizontal frame. Parts corresponding to those in FIG. Omit it.

In FIG. 2, the vertical frame 20 is a frame having a U-shaped cross section and having a recess, and extends from the upper edge to the lower edge of the screen frame 17.
Similarly, the horizontal frame 21 is also a frame having a U-shaped cross section and having a recess, and the screen frame 1
It extends from the left edge of 7 to the right edge. These vertical frames 2
0 and the horizontal frame 21 are connected to each other at the central portion a which intersects with each other, as is apparent from FIG. 3 showing an enlarged view of the partial portion a. Therefore, the vertical frame 20 and the horizontal frame 21 are integrated. Forming a cross-shaped frame, and the ends of this frame, that is, the upper and lower ends of the vertical frame 20 and the left and right ends of the horizontal frame 21 are fixed to the screen frame 17, respectively.

One edge of the left and right partition plates 13 along the longitudinal direction thereof is inserted into the recess of the vertical frame 20,
The inwardly extending portion is supported by the vertical frame 20. Further, one edge of the upper and lower partition plates 14 along the longitudinal direction thereof is inserted into the recessed portion of the horizontal frame 21, and the vertical frame 21 is supported by this inserted portion. These supports are shown in FIG.
a, a washer 23a, and a compression spring 24a.

This supporting method is described by dividing line A--A in FIG.
A specific description will be given with reference to FIG. 4 showing a cross section taken along line. However, 21a is a depression, 21b is a bottom, 21c and 21d are sidewalls, 22a and 22b are screws, 23a and 23b are washers, 24a and 24b are compression springs, 25 is a thread, 26a,
26b is a screw hole, 27a and 27b are oblong holes, and 28 is a round hole, and the same reference numerals are given to the portions corresponding to the above drawings.

In FIG. 4, one edge of the upper and lower partition plates 14 is inserted into the recess 21a of the horizontal frame 21 having a U-shaped cross section, and the other front end of the upper and lower partition plates 14 is a Fresnel lens sheet. It faces the adhesive surface 12a. In the portion of the upper and lower partition plate 14 that is inserted into the recessed portion 21a of the horizontal frame 21, two screw holes 26a and 26b that penetrate each other in the width direction (arrow z direction) are provided. . In addition, the two side walls facing each other through the recess 21a of the horizontal frame 21 are also provided with 2 in the arrow z direction.
Slots 27a, 27b, 27a ', 27b' are provided one by one, and the spacing between these slots 27a, 27b and the spacing between slots 27a ', 27b' are equal to the spacing between the screw holes 26a, 26b. There is.

When one edge of the upper and lower partition plates 14 is horizontally inserted into the recess 21a of the horizontal frame 21, the central axis of the screw hole 26a of the upper and lower partition plates 14 is the horizontal frame 21.
So that the central axes of the screw holes 26b of the upper and lower partition plates 14 coincide with the central axes of the two elongated holes 27b, 27b 'of the horizontal frame 21. In this state, the screw 22a having the washer 23a attached thereto is passed through the slot 27a, the screw hole 26a and the slot 27a ', and the screw 22 having the washer 23b attached thereto.
b is passed through the long hole 27b, the screw hole 26b, and the long hole 27b '. Then, between the one side wall portion 21c and the upper and lower partition plates 14, the compression springs 24 are respectively attached to the screws 22a and 22b.
The a and 24b are attached in a compressed state. Therefore, due to these compression springs, the upper and lower partition plates 14 do not rattle against the screws 24a and 24b.

Further, a round hole 28 penetrating the bottom portion 21b of the horizontal frame 21 is provided. The diameter of the round hole 28 is larger than the thickness of the upper and lower partition plates 14 (the direction of the arrow y), and at least the upper surface of the upper and lower partition plates 14 and the thread 25 are formed in the round hole 28
You can see from.

Although not shown in FIG. 2, the thread 25 is laid horizontally between the left and right edges of the screen frame,
Further, in FIG. 4, when the thickness of the upper and lower partition plates 14 is t, the upper and lower partition plates 14 are stretched at a position higher than the Fresnel lens sheet bonding surface 12a by t / 2. This thread 25 is used for the upper and lower partition plates 14
It is used to set the upper and lower positions of, but this point will be described in detail later.

The supporting means for the upper and lower partition plates 14 shown by the dividing line A'-A 'in FIG. 3 has the same structure, and such supporting means are provided at predetermined places on the horizontal frame 21 to provide the upper and lower partition plates 1.
4 are supported. Similarly, as shown by the dividing line A "-A", the vertical frame 20 is also provided with supporting means of the same configuration, and the left and right partition plates 13 are supported by these. It should be noted that the thread 2 in FIG.
5, threads for setting the left and right positions of the left and right partition plates 13 are vertically installed between the upper and lower edges of the screen frame 17 in FIG.

FIG. 5 is an enlarged perspective view showing the portion B in FIG. 3, that is, the intersection between the left and right partition plates 13 and the upper and lower partition plates 14, and 13a and 14a are notches. The same reference numerals are attached to the parts corresponding to the drawings.

In FIG. 5, a cut portion 13a is provided in the widthwise direction (z direction) at the center of the left and right partition plates 13,
A notch 14a is also provided in the center of the upper and lower partition plates 14 in the width direction (z direction) thereof. Then, the left and right partition plates 13 and the upper and lower partition plates 14 are meshed with each other at the cut portions 13a and 14a. As a result, the left and right partition plates 13 and the upper and lower partition plates 14 are orthogonal to each other. These notches 1
The widths of 3a and 14a are made slightly larger than the thicknesses of the upper and lower partition plates 14 and the left and right partition plates 13, respectively, and when the left and right partition plates 13 and the upper and lower partition plates 14 are engaged with each other as described above, a clearance is generated and left and right. Partition plate 13 is horizontal (arrow x direction)
The upper and lower partition plates 14 can be slightly displaced in the vertical direction (direction of arrow y).

Here, the left and right partition plates 13 and the upper and lower partition plates 14 have the same width (in the direction of arrow z), and the cut portions 13a,
The total depth of 14a (direction of arrow z) is 1
3, It is made slightly larger than the width of the upper and lower partition plates 14. This is because the left and right partition plates 13 and the upper and lower partition plates 14 can be displaced as described above.

Further, the tips of the left and right partition plates 13 and the upper and lower partition plates 14 are on the same plane. This plane is
This is a surface corresponding to the back surface of the screen 3 shown in FIG. 1 (that is, the surface of the combined Fresnel lens sheet 8).

Returning to FIG. 2, the screen device 1 has the above-described structure on the screen frame 17 to which the vertical frame 20 and the horizontal frame 21 supporting the left and right partition plates 13 and the upper and lower partition plates 14 are fixed as described above. The screen 3 is attached to the screen frame 2 (FIG. 1).

The screen 3 has blocks 19 at both left and right ends of the Fresnel lens sheet bonding surface 12a on the back surface thereof.
a and 19b are provided, and the Fresnel lens sheet bonding surface 1
Blocks (not shown) are provided at both upper and lower ends of 2b. Supporting metal fittings 18a and 18b are fixed to the center portions of the left and right edges of the screen frame 17, and supporting metal fittings (not shown) are fixed to the center portions of the upper and lower edge portions of the screen frame 17, respectively. Support bracket 18a,
By attaching blocks 19a and 19b to 18b, respectively, and attaching the blocks at the upper and lower ends of the Fresnel lens sheet bonding surface 12b to the support metal fittings provided at the central portions of the upper and lower edges of the screen frame 17, the screen 3 becomes a screen. It is attached to the frame 17.

In the screen device 1 assembled as described above, in the screen 3, the Fresnel lens sheet bonding surface 12b and the lenticular sheet bonding surface 1 in the vertical direction are arranged.
1, the vertical Fresnel lens sheet bonding surface 12b and the left and right partition plates 13 are matched, and the horizontal Fresnel lens sheet bonding surface 12a and the upper and lower partition plates 14 are matched. As described above, the positions of the left and right partition plates 13 and the upper and lower partition plates 14 can be adjusted.

This point will be described below with reference to FIGS. 6 and 7. However, FIG. 6 is a perspective view of the right side portion of the Fresnel lens sheet bonding surface 12a in FIG. 2 as seen from the back side opposite to the case of FIG. 2, in which 29 is a pin, 30 is a tension spring, and 31 is a cut and raised portion. The same reference numerals are given to the portions corresponding to those in the above drawings, and the duplicate description will be omitted.

FIG. 7 is a plan view of the vicinity of the intersection of the vertical frame 20 and the horizontal frame 21 in FIG. 3 as seen from the back side opposite to FIG. 3, and 28 'is a round hole, The parts corresponding to those in the drawings are designated by the same reference numerals to omit redundant description.

In FIG. 6, a block 19a is provided at the end of the Fresnel lens sheet bonding surface 12a of the screen 3, and this block is attached to a support metal fitting 18a provided on the back surface of the right edge of the screen frame 17, whereby The screen 3 is attached to the screen frame 17. The horizontal frame 21 and the vertical frame 20 are also fixed to the inner surfaces of the left and right side walls and the upper and lower wall surfaces (not shown) of the screen frame 17.

As described above, the thread 25 is stretched across the left and right edges of the screen frame 17, and the method of stretching the thread is as shown in the figure.
A cut and raised portion 31 is provided on the back side of the right edge portion of the screen frame 17, and one end of the tension spring 30 is attached to the cut and raised portion 31. One end of the thread 25 is connected to the other end of the tension spring 30 via a pin 29 implanted in the support fitting 18a. The other end of the thread 25 is also connected to the same tension spring on the rear surface side of the left edge portion of the screen frame 17, and these tension springs are connected to the thread 25 in a pulled state. It is stretched between the left and right edges of the screen frame 17.

Here, by specifying the position of the pin 29 on the support fitting 18a and also specifying the position of a similar pin that is planted on the back side of the left edge of the screen frame 17,
Since the block 19a is attached to the support fitting 18a, the thread 25 is placed at a position higher than the Fresnel lens sheet bonding surface 12a by 1/2 of the thickness t of the upper and lower partition plates 14 as described above with reference to FIG. , Can be set parallel to the Fresnel lens sheet bonding surface 12a.

The pin 29, the tension spring 30, the thread 25
The above may be always attached to the screen frame 17, or may be provided only when the screen device 1 is assembled.

In the above-mentioned state, the screen device 1 is kept upright, and the round hole 28 of the horizontal frame 21 is looked into from the back surface.
While watching the upper surface of the upper and lower partition plates 14 and the thread 25, the screw 22
By rotating a and 22b, the upper surfaces of the upper and lower partition plates 14 are adjusted so as to contact the threads 25.

By performing such an adjusting operation with such adjusting means provided in each part of the horizontal frame 21, the entire upper surfaces of the upper and lower partition plates 14 come into contact with the thread 25, and therefore the upper and lower partition plates 14 are placed in the horizontal Fresnel lens shield. -To coincide with the adhesive surface 12a.

The above-described adjustment operation is also performed on the left and right partition plates 13, whereby the left and right partition plates 13 can be aligned with the vertical Fresnel lens sheet bonding surface 12b.

As shown in FIG. 7, the vertical frame 20
A round hole 28 'is provided at the intersection of the horizontal frame 21 and the horizontal frame 21, and the vertical frame 20 is removed while being removed from this round hole 28'.
The left and right partition plates 13 and the upper and lower partition plates 14 are operated by operating the screws of the adjusting means provided on the horizontal frame 21.
Can be made to coincide with the intersection between the vertical Fresnel lens sheet adhesive surface 12b and the horizontal Fresnel lens sheet adhesive surface 12a.

By the above adjustment operation, the left and right partition plates 13 and the upper and lower partition plates 14 are aligned with the vertical Fresnel lens sheet bonding surface 12b and the horizontal Fresnel lens sheet bonding surface 12a, respectively, with high accuracy. Become.

As described above, since the positions of the partition plates 13 and 14 are adjusted at a plurality of points, the partition plates 13 and 14 can be adjusted.
Even if the thickness of 14 is thin enough to bend due to its own weight, it is possible to maintain the straightness, that is, straightness, except for this deflection, and to divide these partition plates 13 and 14 into vertical and horizontal Fresnel lenses. Since it is possible to match the sheet bonding surfaces 12a and 12b with high accuracy, it is possible to minimize the joints of the multivision device.

[0051]

As described above, according to the present invention,
Since the partition plate is supported at a plurality of points and the position of each part of the partition plate can be adjusted by the supporting means, even if the partition plate is thin so that it can be bent by its own weight,
It is possible to maintain a high straightness and match it with the adhesive surface of a large-screen screen, and it is possible to minimize the joint width on the screen and improve the quality of the displayed image.

Further, according to the present invention, since the position of the partition plate can be adjusted by the adjusting screw, the adjustment can be performed easily and with high accuracy.

Further, according to the present invention, since the thread provided in parallel with the adhesive surface can be used as a guide for determining the setting position of the partition plate, the work of aligning the partition plate with the adhesive surface becomes very easy. .

Furthermore, according to the present invention, since the thread and the partition plate can be seen from the supporting means side,
It is easy to understand the guide for determining the setting position of the partition plate,
It becomes very easy to align the partition plate with the adhesive surface.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of a multi-vision device using an embodiment of a joint minimization method according to the present invention.

FIG. 2 is a front view showing the configuration of the screen device shown in FIG.

FIG. 3 is a front view showing an enlarged part A in FIG.

4 is a cross-sectional view taken along the section line AA in FIG.

FIG. 5 is an enlarged perspective view showing a portion B in FIG.

FIG. 6 is a perspective view showing a means and a method for aligning the partition plate in FIG. 2 with a Fresnel lens sheet bonding surface.

FIG. 7 is a plan view of FIG. 3 seen from the rear side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Screen device 2 Screen frame 3 Screen 7 Combination lenticular sheet 8 Combination Fresnel lens sheet 9a, 9b Lenticular sheet 10a-10d Fresnel lens sheet 11 Lenticular sheet bonding surface 12a, 12b Fresnel lens sheet bonding surface 13 left and right partition plate 14 upper and lower partition plate 17 screen frame 18a, 18b support metal fittings 19a, 19b block 20 vertical frame 21 horizontal frame 22a, 22b screw 24a, 24b compression spring 25 Thread 26a, 26b Screw hole 27a, 27b, 27a ', 27b' Oblong hole 28 Round hole 29 Pin 30 Tension spring 31 Cut and raised portion

(72) Inventor Hideo Misono, 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa, Ltd. AV equipment division, Hitachi, Ltd. (72) Fumihito Ichikawa, 292, Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Hitachi Image Information System (72) Inventor Tadashi Sato 292 Yoshida-cho, Totsuka-ku, Yokohama City, Kanagawa Prefecture Hitachi Image Information System Co., Ltd.

Claims (4)

[Claims] 1. The images of a plurality of projection units are enlarged and displayed on a large-screen screen, and the large-screen screens are arranged in the same plane with unit screens corresponding to the respective projection units aligned with each other. In a multi-vision device in which an edge portion of the unit screen is adhered with an adhesive, the large-screen screen is partitioned by a vertical partition plate extending in the left-right direction and a left-right partition plate extending in the vertical direction, A plurality of unit screens are provided, and a plurality of them are provided along the upper and lower partition plates, and the first adjusting means for adjusting the vertical position of each part of the upper and lower partition plates adjoins in the vertical direction. The upper and lower partition plates are aligned with the first screen bonding surface between the unit screens, and a plurality of them are provided along the left and right partition plates to adjust the horizontal position for each part of the left and right partition plates. A joint minimization method for a multi-vision device, characterized in that the left and right partition plates are made to coincide with a second screen bonding surface between the unit screens that are adjacent to each other in the left-right direction. 2. The horizontal frame extending in the left-right direction according to claim 1, wherein a recess is provided along the longitudinal direction of the horizontal frame, and one edge of the upper and lower partition plates is inserted into the recess, and A recess is provided along the longitudinal direction of the extending vertical frame, and one edge of the left and right partition plates is inserted into the recess, and the first adjusting means is inserted into the recess of the horizontal frame. One edge of the upper and lower partition plates is attached to the horizontal frame by a first adjusting screw, and by operating the first adjusting screw, the upper and lower partition plates are displaced in the vertical direction, The second adjusting means is configured such that one edge portion of the left and right partition plates inserted into the recessed portion of the vertical frame is attached to the vertical frame by a second adjusting screw, and the second adjusting screw is The left and right partitions can be operated by operating Joint minimization method multivision device characterized by being displaced in the lateral direction. 3. The yarn according to claim 1 or 2, wherein threads are stretched in parallel with each of the first and second screen adhering surfaces, and the upper and lower partition plates are provided with the first adjusting means by the first adjusting means.
The vertical position of the upper and lower partition plates is adjusted so that the upper and lower partition plates are positioned parallel to the screen bonding surface of the second partition plate by the second adjusting means.
2. The joint minimization method for a multivision device, wherein the left and right positions of the left and right partition plates are adjusted so that the left and right partition plates are positioned parallel to the screen bonding surface and at a predetermined distance. 4. The yarn according to claim 3, wherein the first adjusting means allows the thread parallel to the first screen adhering surface and the upper and lower partition plates to be seen, and the second adjusting means can provide the second A method for minimizing joints in a multi-vision device, characterized in that it is possible to look through the thread parallel to the screen bonding surface and the left and right partition plates.