KR200207595Y1 - Grill / shadow mask frame device of color water pipe - Google Patents

Abstract

The present invention relates to a grill / shadow mask frame device of a color water pipe. The structure of a frame supporting a mask is improved, and the material of bimetal is used to make a flat panel type cathode water pipe and a trinitron type cathode water pipe at low manufacturing cost. In the conventional grill / shadow mask frame, there is a problem in that tension is applied and the complexity and productivity of the equipment are low. However, according to the present invention, when the shadow mask frame assembly is used, the high-expansion material 100a and the low-expansion material of the support frame 200 in the vertical and horizontal directions and the main frame 100 in the left and right vertical directions are supported on the frame supporting the shadow mask. The main frame 100 absorbs the heat deformation generated in the mask due to the bimetal of 100b), which prevents the doming phenomenon and improves productivity without the application of tension, thereby realizing the color accuracy and high definition of the color receiver. The present invention relates to a grill / shadow mask frame device of a color water pipe, which enables economic production of high quality water pipes.

Description

Grill / shadow mask frame device of Color water pipe

1 is a schematic longitudinal sectional view showing the overall configuration of a general color water pipe.

FIG. 2 is an exploded perspective view illustrating a process in which an electron beam in a general color water pipe is generated and collides with a phosphor across a shadow mask.

3 is a diagram illustrating the doming phenomenon occurring in the shadow mask during operation of the color receiver and the mis-landing of the electron beam due to the domming.

Figure 4 is a perspective view showing the assembly of a conventional frame and grill using a trinitron method in the color water pipe.

5 is an assembly perspective view showing a coupling state between a conventional frame and a water pipe using a flat tension method in a color water pipe.

Figure 6 is a perspective view of the assembly of the grill applied to the frame of this article using the trinitron method in the color water pipe.

7 is an assembly perspective view showing a state in which the grill is applied to the frame of the present invention using the trinitron method in the color water pipe.

8 is an assembly perspective view showing a state in which the water pipe is coupled to the frame of the present invention using the flat tension method in the color water pipe.

9 is a perspective view of the assembly showing a defective state with the water pipe, the grill is applied to the frame of the present invention using the flat tension method in the color water pipe.

FIG. 10 is a perspective view illustrating a state in which a new dough mask is applied to a frame of the present invention using a flat tension method in a color water pipe, and is coupled to a water pipe.

* Explanation of symbols for main parts of the drawings

100: main frame 200: support frame

100a: high expansion material 100b: low expansion material

The present invention relates to a grill / shadow mask frame device of a color water pipe, and in particular, improves the structure of a frame supporting a shadow mask and constitutes a material of bimetal to prevent the doming phenomenon of the shadow mask and the linear expansion of the grill. The purpose of the absorption is to improve the image quality of a cathode-ray tube for high-definition color monitor.

In general, when looking at the assembly structure of the frame and the shadow mask, in the manufacture of the color water pipe used in the work PC, the shadowing material is composed of Invar material having a low coefficient of thermal expansion, and thus the amount of doming is about 50%. Although reducing the degree, the price of Invar material is several times more expensive than the existing AK steel, and there is a problem of bad moldability.

Another color water pipe is designed with the entire glass surface and the shadow mask as a completely flat structure, and when tension is applied to the frame, it absorbs all the deformation of the shadow mask caused by thermal expansion by applying tension in the horizontal and vertical directions to prevent the doming phenomenon. Although there is a flat tension mask cathode water pipe to prevent, there are problems in that the process and equipment for simultaneously applying tension in the horizontal and vertical directions of the shadow mask are complicated and the productivity of the color water pipe is low.

1 is a schematic longitudinal cross-sectional view showing the general configuration of a general color receiver, in which the inside of the collar receiver maintains high vacuum and is sealed to protect the internal components. A deflection yoke (4) which generates and deflects an electron beam by means of a shadow mask (3) and an electron beam (6) which allow an electron beam from the electron gun to precisely reach the desired red, green and blue phosphor (2). It consists of the phosphor 2 etc. which light-emit and generate | occur | produce an image. The phosphor 2 surface and the shadow mask 3 front surface have a fixed distance, and the shadow mask 3 is supported by the frame 7. As shown in FIG.

Next is an exploded perspective view showing a process in which the electron beam inside the color receiving pipe collides with the phosphor across the shadow mask in FIG. 2, and the electron beam emitted from the electron gun 5 is a mask hole 3a formed in the shadow mask 3. And collide with the red, green, and blue (R, G, B) phosphors 2 formed on the inner surface of the glass bulb to generate color where the electron beam collided.

If the shadow mask 3 is deformed or the distance between the surface of the phosphor 2 is locally changed, the electron beams collide with the edges of the peripheral phosphors, resulting in color mixing.

In addition, referring to FIG. 3, the electron beam emitted from the electron gun 5 does not pass all the mask holes 3a of the shadow mask 3 and passes only about 20%. The remaining 80% of the electron beam does not pass. It hits the surface of the shadow mask 3.

Therefore, the temperature of the shadow mask 3 and the frame 7 increases during the operation of the color cathode water pipe, and thermal deformation (P'-P), which is called doming, occurs in the shadow mask 3 due to the temperature rise. Done. However, the dominant phenomenon and the misalignment of the electron beam (M / L;) caused by the natural phenomenon cannot be avoided, and the structural improvement and the material improvement have been made steadily to minimize thermal deformation. 3 is a diagram illustrating the domming phenomenon of the shadow mask and the misalignment of the electron beam due to the domming.

The following is a detailed description of the prior art in the following examples. Figure 4 is a perspective view showing the assembly of a conventional frame and grill using the Trinitron method in the color water pipe, Figure 5 shows a state of coupling between the conventional frame and the water pipe using the flat tension method in the color water pipe. Angled perspective view of the assembly.

As shown in FIG. 4, when looking at the assembly of FIG. 4, Sony's trinitron method uses a grille 10 instead of a plate-shaped mask, and is perpendicular to the restraint frame 12 supporting the grille 10 in a horizontal direction. It is composed of the main frame 11 in the direction.

The Sony trinitron frame / grill assembly of the grill 10 caused by thermal expansion by applying tension in the vertical direction during assembly in order to minimize thermal deformation to the grill line (10a) called the grill (10). Although it is using a method of absorbing all the deformation amount to prevent the doming, there is also a problem that the process of applying the tension is very complicated, the productivity is low.

In another embodiment, a conventional assembly of FIG. 5, the flat tension mask (R) of the Zenith Inc. of the United States is a horizontal frame 25 of the four triangular prism shape on the inner surface of the complete flat water pipe (20) and The vertical frame 26 is bonded and the steel mask (not shown) is placed on the horizontal and vertical frames 25 and 26 in a state in which tension is applied in the horizontal and vertical directions to prevent thermal deformation of the shadow mask. Since the shadow mask frame assembly is formed by welding with a laser beam and then cutting the periphery with a laser, there is a problem that the process is complicated, requires expensive production cost, and the productivity of the color receiving pipe is low.

Therefore, the purpose of the present invention is to provide a material with high thermal expansion coefficient in the design of the main frame without complex tensioning process on the frame of the shadow mask in order to prevent thermal deformation and reduce the doming phenomenon when installing the frame of the shadow mask. It is to provide a grill / shadow mask frame device of the color receiving pipe to increase the degree of color and productivity of the high-definition color receiving pipe by absorbing the dome of the shadow mask and the linear expansion of the grill by installing a bimetal composed of a low-expansion material on the outside.

The purpose of this invention is the left / right frame in the grill / shadow mask frame device of the color water pipe is bonded to the rear surface of the water pipe, the upper, lower support frame has a certain distance from the rear of the water pipe, the left, right The main frame and the upper and lower support frames may be achieved by being combined with each other.

Hereinafter, the technical configuration shown in the accompanying drawings according to the present invention in detail according to an embodiment, Figure 6 is a perspective view of the assembly of the grill applied to the frame of the present invention using the trinitron method in the color water pipe, Figure 7 is a collar The grill is applied to the frame of the present invention using the Trinitron method in the water pipe, and each shows a perspective view of the assembly combined with the water pipe. In the shadow mask frame assembly structure of the color water pipe, the shadow mask is used instead of the conventional plate mask. It is composed of a thin line (30a) called the grill 30, the frame is composed of the main frame 100 and the support frame 200, the main frame 100 is bonded to the rear of the water pipe, The upper and lower support frames 200 are coupled to the main frame 100 in the left and right vertical directions, and are installed at regular intervals from the water pipe, and the left and right vertical main frames Lim (100) is composed of a high expansion material (100a) and a low expansion material (100b) on the inside and the outside.

In such a color water pipe, the grill / shadow mask frame device of the color water pipe according to the present invention is easily applied to the frame / mask structure of the trinitron type color water pipe of Sony of FIG. In the Trinitron method, the color water pipe screen is a part of a circle having a constant radius with respect to the central axis G-G 'of the support frame 200, and is configured in a straight line in the vertical direction.

A bimetal structure composed of a high expansion material 100a and a low expansion material 100b is introduced into the inner and outer sides of the main frame 100 so that the color receiving pipe is operated to collide with the grill of the electron beam, thereby causing the temperature of the grill 30 to rise. The heat is transferred to the upper and lower support frames, and the heat is received by the left and right main frames 100 and absorbed by the high-expansion material 100a and the low-expansion material 100b made of a bimetal structure. When operated, the tensile force is generated in the vertical direction, so that all the heat deformation of the grille is absorbed, thereby preventing the heat deformation of the grille 30.

The above case is explained numerically as follows.

The material of the grill is the maximum deformation of the grill during operation of the color water pipe when the height of the iron and color water pipes is about 0.3m and the temperature rise is 20 ℃.

ΔL = α × L × △ T 72 micrometers.

(α: thermal expansion coefficient, L: height, ΔT: temperature increase)

Therefore, when the vertical component deformation is 36 µm or more due to the inner and outer bimetal structures, the thermal expansion of the grill 30 is completely absorbed. Therefore, using the shadow mask frame assembly of the present invention can omit the process of applying the tension in the prior art, it can make a great contribution to increase the productivity of the color water pipe.

Another embodiment 8, 9 and 10 is a perspective view of the assembly of the present invention using a flat tension method in a color water pipe, the same reference numerals denote the same configuration in FIG. Explain. The frame is composed of a main frame 100 and a support frame 200, the main frame 100 is bonded to the rear of the water pipe, the upper and lower support frame 200 is the main frame 100 in the left and right vertical direction It is coupled to), the support frame 200 has a straight rod shape having a circular or rectangular cross-section and is separated away while maintaining a predetermined interval with respect to the surface of the water pipe 400. The left and right vertical main frame 100 is composed of a high expansion material 100a and a low expansion material 100b inside and outside.

9 and 10 show another embodiment, which is the same as the above assembly and may be applied to a grill and a mask.

9 is a grill applied to the frame of the present invention using a flat tension method in the color water pipe, showing a perspective view of the assembly coupled to the water pipe, the grill 30 of Figure 6 is applied to the frame. At this time, the virtual cross section formed by all the grills becomes a part of the plane.) FIG. 10 is a shadow mask applied to the frame of the present invention using the flat tension method in the color water pipe, showing the state of being combined with the water pipe. The assembly perspective view is shown and applied using the shadow mask 40.

As described above, the effect of assembly between the grill / shadow mask and the frame of FIGS. 8, 9, and 10 and the frame will be described as follows. The grill 30 and the shadow mask 40 may be affected by the collision of the electron beam during the operation of the color receiver. Heat transfers to the high-expansion material 100a and the low-expansion material 100b of the left and right frames via the upper and lower support frames, and when the bimetal is operated, tensile force is generated in the vertical direction. 30) or all of the heat deformation of the shadow mask 40. Therefore, the conventional tensioning step can be omitted, which can make a great contribution to increasing the productivity of the color receiver.

As described above, when the overall effect of the frame / mask assembly of the present invention is comprehensively described, the bimetal structure of the high-expanding material and the low-expanding material may be formed on the inner and outer sides of the support frame and the main frame of the present invention instead of the conventional frame. The process of applying tension to the grill or frame can be omitted, making a great contribution to improving the productivity of the color receiving pipe, minimizing the dominant phenomenon, which is a chronic problem of the color receiving pipe, By realizing this, it is possible to economically produce a high-definition picture tube.

Claims (2)

It consists of a left and right main frame and a top and bottom support frame, the left and right main frame is made of a high thermal expansion material having a good thermal expansion coefficient is joined to the upper and lower support frame and bonded to the rear of the water pipe. The support frame is a grill / shadow mask frame device of the color water pipe, characterized in that installed at regular intervals with the water pipe. The grille / shadow mask frame device of claim 1, wherein the left and right main frames are each made of a high expansion material and a low expansion material inside and outside thereof.