WO1998043273A1

WO1998043273A1 - A large television display screen without butting part and manufacturing the same

Info

Publication number: WO1998043273A1
Application number: PCT/CN1998/000031
Authority: WO
Inventors: Wusheng Wang
Original assignee: Yu, Tao
Priority date: 1997-03-20
Filing date: 1998-03-05
Publication date: 1998-10-01
Also published as: AU6288598A; CN2283951Y

Abstract

A large television display screen without butting part, which comprises a plurality of display screens of kinescopes of which the large display screen is composed; a supporting frame which is bonded to the screens of kinescopes; optical fiber bundles. An edge of the frame and the bottoms of partition stripes cover the rim of the display screen of the kinescope and a butting part between the screens. The optical fiber bundles are densely arranged within the supporting frame and cover the display screen of each kinescope. The optical fiber bundles on the display screen of the kinescope incline to the fictitious centre axis which is made through the center of the large screen. There is not butting and blind part on the large screen, so the image thereon is clear and integrative.

Description

Technical field

The present invention relates generally to components of a television system, and more particularly to an image reproducer. Background technique

At present, due to the influence of the strength of the picture tube and the manufacturing process, the size of the television display screen is limited to a certain extent. In some places, when a very large display screen is required, people mostly use a method of stitching and combining multiple picture tubes. When stitching and combining, due to the thickness of the tube wall of the picture tube and the gap between the two adjacent picture tubes, there is no image area effect, so that the image displayed on the entire large screen has no continuity, and the visual effect is poor.

In order to solve the above problems, some people adopt the method of increasing the size of a single picture tube or reducing the thickness of the tube wall of the picture tube. Although this can reduce the area without an image, it still cannot completely solve the problem of image continuity. The effect is poor, unclear, and the projection equipment is large, bulky, inconvenient to install, and restricted in use. Summary of the Invention

The purpose of the present invention is to overcome the shortcomings of the above-mentioned known large screens for television displays, and to provide a seamless television display screen with simple structure, easy manufacture, low cost, and clear images, and a method for manufacturing the same.

The jointless television display large screen of the present invention comprises a plurality of display tubes constituting a large display tube, a support frame bonded to the display tube display screen, an optical fiber bundle, a frame and a spacer of the support frame. The bottom surface covers the edges of the picture tube display screen and the joints between the display screens. The optical fiber bundles are densely packed in the support frame and cover the display screens of the individual picture tubes. The vertical height h is η (η-1) a, where-n is the number of kinescope display screens per line constituting the display large screen,

a is the sum of the edges of the display screens of the left and right adjacent picture tubes and the width of their joints,

η is the coefficient "= 0, 5-2,

Visualization at the center point of the hypothetical "Ten" coordinate line by displaying the center point of the large screen

Replacement page (by-law 26 糸) The optical fiber bundle on the tube display should be parallel to the hypothetical central axis made by showing the center point of the large screen,

The other optical fiber bundles on the display screens of the other kinescopes are tilted toward the hypothetical center axis through the center point of the display large screen, and the angles between them and the plane of the kinescope screen are determined by the following formulas;

The angle between the fiber-optic fiber bundle on the picture tube display screen and the plane of the display screen on the horizontal line of the hypothetical "ten" coordinate line made by displaying the center point of the large screen is-α = a r c t g h / a,

The angle between the optical fiber bundle on the display screen of the picture tube in the vertical direction of the hypothetical "Ten" coordinate line and the plane of the display screen is:

β = Ά τ c t g h / b,

Where b is the sum of the width of the edges of the display screens of the two adjacent picture tubes and their joints.

The angle between the optical fiber bundle on the display screen of the remaining picture tubes and the plane of the display screen is:

0 = arctgh / a ² + b ² o

One end of the large-screen optical fiber bundle of the seamless television display of the present invention is preferably bonded to the display screen of the picture tube with transparent glue.

The front of the optical fiber bundle of the seamless television display large screen of the present invention is preferably provided with a transparent glass plate. The support frame of the jointless television display large screen of the present invention is more preferably made of ABS plastic. The method for manufacturing a seamless screen for a seamless television display of the present invention includes the following process steps:

(1) Apply transparent glue to each optical fiber separately with a gluing device, an isolation device and a winding machine. At the same time, they are wound and bonded together to form optical fiber bundles that are arranged in parallel and layer by layer.

(2) using a cutting device to cut the optical fiber bundle into an optical fiber bundle blank,

(3) cutting the blank of the optical fiber bundle according to the area of each display tube display screen and the position of each display tube display screen, the angle between the optical fiber bundle on the display screen and the display screen, and the length of the optical fiber Into said optical fiber bundle,

(4) grinding and polishing the cut optical fiber bundle with a grinder and a polishing machine,

(5) making a support frame and bonding it to the display screen of the picture tube,

(6) Put the optical fiber bundle produced in step (4) into a corresponding position in the support frame, so that it covers the display screen of the picture tube.

In the method for manufacturing a large screen of a seamless television display of the present invention, it is preferable that the optical fiber bundle is bonded to the display screen of the picture tube with transparent glue in step (6).

Replacement page (by-law 26 糸) The jointless television display large screen of the present invention is because the support frame and the optical fiber bundle are directly added to the front of the known CRT display screen composed of several permutations and combinations. Tilt a certain angle to the hypothetical central axis direction made by displaying the center point of the large screen, so that the optical fiber bundle covers the edge of the adjacent CRT display screen and its joints to form a complete jointless display screen, so its structure Simple, easy to manufacture, and low in price; the images on the display screens of each picture tube are transmitted to the output end through the input end of the optical fiber bundle, which does not change the original graphics and eliminates the original arrangement and combination on the large screen. The seams between the images form a complete, seamless, continuous, clear picture.

And because the manufacturing method of the large screen of the seamless television display of the present invention is made by using the existing glue coating, winding, cutting, grinding, and polishing equipment, the production is simple and the price is low. Brief description of the drawings

FIG. 1 is a schematic diagram showing a solid structure of a seamless television display large screen of the present invention, which is composed of 9 kinescope display screens;

2 is a schematic diagram showing the structure of the second line of the seamless television display large screen of the present invention shown in FIG. 1 composed of three picture tubes;

3 is a front view showing the supporting frame used in the seamless television display large screen of the present invention shown in FIG. 1 and the position of each display tube display screen constituting the large screen;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

5 is a schematic view showing a process of gluing and winding optical fiber bundles in a method for manufacturing a large screen of a seamless television display according to the present invention;

FIG. 6 is a schematic diagram showing a process of cutting a bundle of optical fiber bundles into a blank of the optical fiber bundle in a method for manufacturing a large screen of a seamless television display according to the present invention; FIG.

7a, b, and c respectively show the process diagrams of cutting the optical fiber bundles used to be placed on the display screen of the support frame A shown in FIG. 3;

8a, b, and c respectively show the process diagrams of cutting the optical fiber bundles used for placing on the display screen at the position B in the support frame shown in FIG. 3;

Figs. 9a, b, and c respectively show the process diagrams of cutting the optical fiber bundles for placement on the display screen at position H in the support frame shown in Fig. 3. Figs. Embodiments of the invention

-3-Replacement page (Article 26 糸) Refer to Figure 1. FIG. 1 is a schematic diagram showing the three-dimensional structure of a seamless television display screen of the present invention, which is composed of nine kinescope display screens 1. Adhesives such as silicone and epoxy can be used on the display screen to support the support frame 2 shown in Figures 3 and 4 (Figure 1 only schematically shows the spacer 2 of the support frame located between the two CRT display screens. 2. The frame 21 is not shown. On the display screen of the support frame 2, the optical fiber bundle 3 is bonded with an adhesive such as transparent silicone or transparent epoxy. 4 in the figure shows the gap between the two picture tube display screens.

Refer to Figure 2. FIG. 2 is a schematic diagram showing the structure of a display screen in a large screen composed of nine picture tube display screens shown in FIG. 1. Among them, 5, 6, and 7 respectively represent the display screens of the picture tubes at the positions A, B, and C in FIG. 3. Because the display tube display screen 5 is located exactly in the center of the large display screen shown in FIG. 1, that is, at the position A in FIG. 3, the optical fiber bundle thereon is parallel to the hypothetical center axis Z-Z made through the center point of the large display screen. The optical fiber bundles thereon can be vertically bonded to the display screen. The optical fiber bundles on the kinescope display screens located at the B and C positions should be tilted at an angle toward the Z-Z axis in order to cover the two adjacent kinescope display screens at the A, B, and A and C positions. Between the edges and the gap width a, which covers the area outside the effective screen of the display. Light guide The vertical distance (ie height) of the fiber bundle from the display tube of the kinescope can be selected within the range of values calculated by the following formula-η (η-1) a

In the formula: n is the number of kinescope display screens in each line constituting a large screen,

W is a coefficient, W = 0 · 5 ~ 2.

In general, when the number of kinescope display screens constituting a large screen is large, the value of the coefficient "should be selected as a low value. Conversely, when the number of kinescope display screens constituting a large screen is small, the value of the coefficient η should be selected as a high value. Make sure that the length of the optical fiber bundle is moderate. In fact, the height of the optical fiber bundle can be selected, as long as it can cover the area outside the effective screen. For example, in this embodiment, a 4 5 cm picture tube is used to assemble one 1 3 A 5 cm display large screen, the number of kinescope display screens is 9, where a = 16 mm, n = 3, h value can be taken as 0.8 X (3-1) x 1 6 = 25.6 mm. Another example: Assemble a 90 cm display large screen with 4 4.5 cm picture tubes, the height h of the optical fiber bundle can be taken as 16 mm; Assemble a 180 cm with 16 4 5 cm picture tubes Display large screen, the height h value of the optical fiber bundle can be selected as 2 8-It is not difficult to understand that the inclination angle of the optical fiber bundle located on the display screen 6 to the right to the center axis Z-Z direction α = arctgh / a _; located on the display screen Optical fiber bundles on 7 go left to center 1 4

Replacement page (Article 26) The inclination of the Z-Z axis is also arctgh / a. Optical fiber bundle length 1 i = a ² + h ² o

In short, the optical fiber bundles on the picture tube display screen located on the horizontal line X-X of the hypothetical "Ten" coordinate line made by displaying the center point O of the large screen should be from left and right sides to The central axis is tilted in the Z-Z direction, and the angle between the axis and the display is α = arctgh / a.

In the same way, it can be calculated that the optical fiber bundles on the display screen of the picture tube at the positions D and E on the hypothetical "Ten" coordinate line vertical line Y-Y made by displaying the center point O of the large screen should be from top to bottom. Both sides are inclined to the direction of the central axis Z-Z. The angle β between the two sides and the display screen of the picture tube can also be calculated simply by using a trigonometric function relationship, iS = arctg 1/13, where 13 is the upper and lower adjacent The sum of the width of the edges of the display screen and the gap between the two display tubes. Length of the optical fiber bundle on it 1 ₂ = "b ² + h ² o

The angle between the optical fiber bundle and the display screen on the display tube display screens at the other F, G, H, I positions or other display screens that are not on the "T" coordinate line can be simply used in the three-dimensional geometric relationship. Calculated, that is 0 = arctgh / ^ a ² + b ² , the length of the optical fiber bundle 1 ₃ = va ² + b ² + h ² o

The optical fiber of the optical fiber bundle used in the present invention may have various shapes such as round, square, and oval. The supporting frame can be made of plastic such as A B S. If a transparent glass plate is installed in front of the large screen of the seamless TV display, the optical fiber bundle will protect the optical fiber bundle from damage and contamination, and prolong its service life. It goes without saying that in order to add a glass plate, an appropriate housing must be installed for the display large screen design.

The jointless television display large screen of the present invention can be combined with various sizes and types of picture tubes according to the size of the screen.

Referring to FIG. 5, FIG. 5 is a diagram showing a process of gluing and winding a bundle of optical fibers in a method for manufacturing a large screen of a seamless television display according to the present invention. In the figure, each optical fiber 8 is coated with transparent glue by a gluing device 9 and wound with a winding device 10 to form an optical fiber bundle 11. Among them, the coating device can be a common coating device for enamelled wires, and the transparent glue can be silica gel, transparent epoxy glue, etc., and the refractive index of the glue must be smaller than the refractive index of the optical fiber itself to reduce the image signal from the optical fiber. The energy loss when one end is transmitted to the other end, so that the sharpness of the image is maintained. In order to prevent each of the optical fiber fibers 8 from being entangled and overlapped with each other after being coated, an optical fiber isolation device 12 is installed between the winding device 10 and the gluing device 9. Winding device 10 can use ordinary winding machine, isolation

Replacement page (Article 26) Set 1 2 can be modified using the spacer on the loom. Through the gluing device 9, the isolating device 1, and the winding device 10 shown in FIG. 5, the optical fiber in the bonded optical fiber bundle 11 is wound up, down, front, and back in layers one by one. Orders are arranged together. After the wound optical fiber bundle 10 is cured, it can enter the next cutting process.

A conventional cutting device, such as a circular saw, a panel saw, etc. is used to cut the cured optical fiber bundle 11 into the optical fiber bundle blank 1 3, see FIG. 6. FIG. 6 shows that the optical fiber bundle 11 is cut into four optical fiber bundle blanks 1 3 from four corners.

Refer to Figures 7a-7c. Figures 7a-7c show schematic diagrams of the process of cutting the optical fiber bundles 14 on the display tube display screen 5 at the position of Figure 3A from the optical fiber bundle blanks 1 and 3. The cut optical fiber bundle 14 is a rectangular parallelepiped.

Figures 8a-8c show the schematic diagram of the process of cutting the optical fiber bundle 15 on the picture tube display screen 6 located at the position of Fig. 3B from the optical fiber bundle blank 13. The cut optical fiber bundle 15 is an oblique hexagonal body at an angle α to the bottom plane.

Figures 9a-9c show schematic diagrams of the process of cutting the optical fiber bundle 16 on the display tube display screen at the position of Fig. 3H from the optical fiber bundle blank 13. The cut optical fiber bundle 16 is an oblique hexagonal body having an angle Θ with the bottom plane. When mounted on a picture tube display, an oblique diagonal of the oblique hexagon is aligned with the hypothetical center axis Z-Z made by displaying the center point of the large screen.

Individual fiber bundles located at other locations can be cut in the same manner as described above.

The cut optical fiber bundles 1, 4, 15, 16, 6 are flattened and polished with a common optical grinder and polisher.

Use ABS material to mold the support frame 2 and adhere it to the edge of the display tube with silicone or epoxy glue, and then cut the optical fiber bundles cut with transparent silicone or epoxy glue 1 4, 1 5, 1 6 ··· are respectively glued on the corresponding CRT display screens 5, 6, 7 ···. Industrial applicability

The jointless television display large screen and the manufacturing method thereof can be widely used to transform the existing large screen assembled by a plurality of picture tubes, eliminate the seams between the images, make the images clearer and more complete, and make them more suitable. Used in shopping malls, entertainment venues, homes, etc.

Replacement page (Article 26 糸)

Claims

Rights request

1. A large screen for a seamless television display, comprising a plurality of display tubes forming a large display tube, characterized in that it further comprises a support frame and an optical fiber bundle bonded to the display tube display, The frame of the support frame and the bottom surface of the spacer cover the edges of the display tube of the picture tube and the seam between the display screens. The optical fiber bundles are densely packed in the support frame and cover the display screens of the respective picture tubes. The vertical height H of the fiber tube distance kinescope display screen is w (nl) a, where-n is the number of kinescope display screens per line constituting the display large screen,

η is the coefficient ^ 7 = 0. 5 ~ 2,

The optical fiber bundle on the picture tube display at the center point of the "ten" coordinate line through the hypothesis of the center of the large screen should be parallel to the hypothetical central axis made by the center of the large screen.

The other optical fiber bundles on the display screens of the other kinescopes are tilted toward the hypothetical center axis through the center point of the display large screen, and the angles between them and the plane of the kinescope display screen are determined by the following formulas;

The angle between the fiber-optic fiber bundle on the picture tube display screen and the plane of the display screen on the horizontal line of the hypothetical "ten" coordinate line made by displaying the center point of the large screen is-= a r c t g h / a,

The angle between the optical fiber bundle on the display screen of the picture tube in the vertical direction of the hypothetical "Ten" coordinate line and the plane of the display screen is: '

5 = a r c t g h / b,

Θ = arctgh /% a ² + b ² .

A large screen for a seamless television display according to claim 1, wherein one end of said optical fiber bundle is adhered to said display tube display screen with transparent glue.

A large screen for a seamless television display according to claim 1 or 2, wherein a transparent glass plate is provided in front of said optical fiber bundle.

A 7

Replacement page (by-law 26 糸) 4. The seamless television display large screen according to claim 3, wherein said support frame is made of ABS plastic.

5. A manufacturing method for manufacturing a seamless TV display large screen according to claim 1, comprising the following process steps-

(1) each of the optical fiber is coated with transparent glue by using a gluing device, an isolating device and a winding machine, and at the same time, they are wound, bonded and cured together into optical fiber bundles arranged in order and layer by layer;

(2) using a cutting device to cut the optical fiber bundle into an optical fiber bundle blank;

(3) according to the area of each display tube display screen and the position of each display tube display screen, the angle between the optical fiber bundle on the display screen and the plane of the display screen, and the length of the optical fiber bundle Cut into said optical fiber bundles;

(4) grinding and polishing the cut optical fiber bundle with a grinder and a polishing machine;

(5) making a support frame and bonding it to the display screen of the picture tube;

6. The manufacturing method according to claim 5, characterized in that step (6) further comprises bonding the optical fiber bundle to a display screen of the picture tube with a transparent glue.

- 8

Replacement page (Article 26 糸)