KR100282390B1 - Panel guide method and apparatus for flat color cathode ray tube - Google Patents

Abstract

The present invention relates to a panel guide method and an apparatus for fixing a rail fixed to an inner surface of a panel to fix a shadow mask of a thin sheet, which serves as color screening, in a flat color cathode ray tube. The support means for determining the position is improved to prevent the rail from being eccentrically fixed to the panel and to extend the life of the support rod.

For this purpose, the inner surface of the panel 1 is mounted with the rail 6 filled with the adhesive on the holder block 11 and the flat panel 1 placed thereon so that both sides of the panel are guided to the supporting means. In the manufacturing method of the flat color CRT tube which fixes the rail 6 to the said support, the support means which supports both sides of the said panel so that the rail 6 may be fixed in the fixed position of the panel 1 may be provided in the base 10 or its periphery. Fine adjustment is possible by adjusting the support means according to the position of the panel (1) mounted on the rail (6) to finely adjust the position of the panel (1), so that the life of the support rod 12 is long, as well as the model is changed Even if it is possible to produce a number of models of the tube without replacing the support rod 12, it is possible to produce a high-quality tube of the precise position of the rail (6).

Description

Panel guide method and apparatus for flat color cathode ray tube

The present invention relates to a flat color cathode ray tube used for a television receiver or an image display, and more particularly, a rail fixed to an inner side of a panel to fix a shadow mask of a thin sheet that serves as color screening. The guide device of the panel for fixing to the.

1 is a longitudinal cross-sectional view showing a conventional flat color cathode ray tube, in which a bulb-shaped funnel 2 is fused to a flat panel 1 by bead glass, and an electron beam 3 is formed on the neck portion 2a. The electron gun 4 which scans to the panel side is enclosed, and the phosphor 5 which emits light of three colors as an electron beam collides is applied to the inner surface of the panel 1.

In addition, a square frame rail 6 is fixed to the inner surface of the panel 1, and a shadow mask 7 having numerous voids in the form of voids or circular holes is laser-welded and fixed on the upper surface of the rail. Maintain a certain interval with (5).

Thus, the three R, G, and B electron beams 3 emitted from the electron gun 4 are accelerated and focused while passing through a plurality of electrodes, and are then deflected over the entire area of the screen by a deflection yoke (not shown). After passing through the thin hole of the shadow mask (7), which serves as color screening, it hits a predetermined phosphor (5), and thus the phosphor emits light to reproduce the screen, but passes through the thin hole of the shadow mask (7). The electron beam 3 is about 20% of the total electron beam and the remaining about 80% is projected by hitting the shadow mask (7).

As a result, the shadow mask 7 is heated by the projected electron beam 3 to cause the doming phenomenon of thermal expansion during operation of the cathode ray tube, so that the thin holes formed in the shadow mask 7 and the corresponding phosphors 5 The relative position is variable.

As a result, when the position where the electron beam 3 lands on the phosphor 5 is changed and the landing allowance is exceeded, color purity is greatly reduced on the screen.

In the flat color cathode ray tube as described above, the rail 6 having a "V" shape in cross section is conventionally formed in the form of a square frame to fix the shadow mask 7 to the inner surface of the panel 1 as shown in FIG. 2. After the welding was fixed with the frit glass (Frit glass) (8) was filled in the inner space was fused and then fixed again to the panel (1) using another frit glass (9).

After the rail 6 is fixed to the panel 1 by the frit glass 8 and 9, the shadow mask 7 having the perforated holes is placed on the upper surface of the rail 6, and the shadow mask is fixed on all sides. Pulled by tension and fixed with the rail (6) by laser welding.

Figure 3 is a front view showing a conventional device for fixing the frit glass-filled rail to the inner surface of the panel, Figure 4 is a plan view showing the panel guided to the support rod, Figure 5 is an enlarged longitudinal cross-sectional view of the "A" part of FIG. It is shown.

Looking at the configuration, the upper surface is formed to be inclined to one side and the holder is fixed on the pedestal to determine the position of the rail (6), to prevent the phenomenon that the rail is placed during the process flows left and right It is installed on the inclined downward portion to support the block 11, both sides of the panel 1, a plurality of support rods 12 made of a rod-shaped carbon material, and the support rods are fixed to the upper surface of the pedestal It consists of a support rod 13 of a metal material to be fixed, and a fastening member 14 for fixing the support rod to the support rod.

In the conventional apparatus configured as described above, the pedestal 10 is inclined in the direction of the arrow in FIG. 4, and a recess groove into which the rail 6 is fitted is formed on the upper surface of the holder block 11.

Therefore, the frit glass (8) (9) of the semi-liquid state is dried inside the rail (6) of the rectangular frame shape, and then the rail is placed on the holder block (11) so that the opening faces upward, and then the panel ( Both sides of 1) are placed in close contact with the plurality of support rods 12 as shown in FIG.

In the above state, as shown in FIG. 6, the inner surface of the panel 1 is not connected to the upper surface of the rail 6 by the frit glass 9.

In such a state, when the high-temperature furnace passes about 400 ° C., the frit glass 9 which is in contact with the inner surface of the panel 1 melts, and the panel 1 moves downward as shown by a dashed line in FIG. Since the frit glass solidifies in the state of being connected to the upper surface of 6), the fixing work of the panel 1 and the rail 6 is completed.

As described above, when the frit glass 9 is melted and the panel 1 moves downward, the support rod 12 supporting both sides of the panel is made of carbon or myonite, and the pedestal 10 is illustrated in FIG. 4. Since the inclined direction of the panel 1 is made to move stably.

However, in the conventional apparatus, since the support rod 12 supporting and positioning both sides of the panel 1 is made of rod-shaped carbon or myonite material, it can be passed through high heat, friction with the panel side, and scratches due to repeated use. Due to this, the outer circumferential surface is easily worn and the distance S from the outer circumferential surface of the panel 1 to the rails 6 is changed, which is inconvenient to be frequently replaced.

If the rail 6 is fixed to the inner surface of the panel 1 while the distance S between the outer circumferential surface of the panel 1 and the rail 6 is changed due to abrasion of the support rod 12, the rail 6 is fixed. The panel 1 is in an eccentric state.

In addition, even when the support rod 12 is replaced with a new one, since the rail 6 is fixed to the inner surface of the panel 1, the support rod 12 is fixed to the support rod 12 to which the support rod 12 is fixed. The position of the support rod 12 which becomes a reference point of a panel is changed.

Accordingly, the rail 6 is eccentrically fixed to the inner surface of the panel 1 to one side, so that the master pattern called the artwork 15 is transferred to the panel 6 through the inner space of the rail 6 as shown in FIG. In the process of approaching the inner surface of 1), the artwork 15 hits the rail 6 and breaks.

The present invention has been made to solve such a problem in the prior art, the support member for determining the position of the panel is installed on the pedestal adjustable so that the rail is eccentrically fixed to the panel according to the wear and deformation of the support member The purpose of this is to prevent the premature and to extend the life of the support member.

Still another object of the present invention is to make it possible to easily vary the distance from the outer circumferential surface of the panel to the rail without replacing the support member even in the production of models of different sizes.

According to the aspect of the present invention for achieving the above object, the rail on the inner surface of the panel in a state in which both sides of the panel is guided to the support means by mounting the adhesive-filled rail on the holder block and a flat panel on the upper side thereof. In the method for manufacturing a flat color CRT tube, the method of providing a panel guide of a flat color cathode ray tube is provided to finely adjust the position of the panel by adjusting the supporting means according to the position of the panel to guide the exact position of the panel. .

According to another aspect of the present invention, a panel guide device provided with a holder block on which an adhesive-filled rail is mounted, and a supporting means for supporting the side surface of the flat panel, wherein the rail is fixed in position in the panel. Provided is a panel guide device of a flat color cathode ray tube, characterized in that support means for supporting both sides are installed in a variable position.

1 is a longitudinal sectional view showing a general flat color cathode ray tube;

Figure 2 is a perspective view of the rail fixed to the inner surface of the panel of the flat color cathode ray tube

3 is a front view showing a conventional device

4 is a plan view showing a state in which the panel is guided to the support rod

5 is an enlarged longitudinal sectional view of portion “A” of FIG. 3;

6 is a state in which the inner surface of the panel is spaced apart from the rail in a conventional device

Figure 7 is a schematic diagram for explaining the problem in the post-process when the rail is eccentrically fixed to the inner surface of the panel

Figure 8 is a longitudinal cross-sectional view showing an embodiment of the present invention

9 is a longitudinal sectional view showing another embodiment of the present invention.

Explanation of symbols for main parts of the drawings

1 panel 6 rail

8, 9: frit glass 10: pedestal

11 holder block 12 support rod

13: support rod 14: fastening member

Hereinafter, the present invention will be described in more detail with reference to FIG. 8 as an embodiment.

In the configuration of the present invention, the same parts as those of the conventional apparatus will be omitted and the same reference numerals will be given.

The present invention is characterized in that it is provided with a plurality of support means which can be varied in position so as to fix the rail 6 at the correct position of the panel 1 so that both sides of the panel 1 are connected.

The support means only need to be installed so as to support both sides of the panel 1, it is more preferably fixed on the pedestal 10 inclined to one side.

In addition, the support means uses a support member having a central axis eccentric to be variable according to the position of the panel 1 on which the rail 6 is fixed to the inner surface.

FIG. 8 is a longitudinal sectional view showing an embodiment of the present invention, in which the present invention supports the side of the panel 1 when adhesively fixing the rail 6 to the inner surface of the panel 1 with an adhesive such as frit glass. The central shaft of each of the supporting members is eccentrically configured and installed on the supporting rods 13 so that the positions of the plurality of supporting members, which are the supporting means, can be varied.

That is, in one embodiment of the present invention, the support member is formed as the support rod 12 and the center of the fastening hole formed to fix the support rod to the support rod 13 by the fastening member 14 is eccentrically formed on the support rod. It was.

Therefore, as the support rod 12 rotates, the position of the panel 1 on which both sides are supported by the support rod is variable.

At this time, the support rod 12 for supporting the side surface of the panel 1 may be configured in a convex cylindrical shape as shown in Fig. 9 shown in another embodiment.

This causes the side surfaces of the panel 1 to be in point contact with the support rods 12 rather than in line contact, so that friction or seizure occurs when the panel 1 slides downward due to melting of the frit glass when passing through the high-temperature furnace. This is to prevent the change of the position of the panel 1 and to keep the same as the reference point position in the subsequent process while preventing in advance.

However, the shape of the support rod 12 shown in each embodiment of the present invention is not limited to the embodiment because it can be applied to various other shapes that are not cylindrical.

In other words, the present invention can be realized as long as the panel 1 is configured to be curved such that the panel 1 is connected in advance.

Referring to the operation of the present invention configured as described above is as follows.

First, as shown in FIG. 8, a jig (JIG) is placed on a holder block 11 on which the rail 6 is placed in a state in which the supporting rod 12, which is a supporting member, is fastened to the fastening member 14 on the upper surface of each supporting rod 13. Put (16).

In such a state, the support rod 12 pre-fastened by the fastening member 14 is gradually rotated so that the fastening member 14 pre-fastened at the point where the support rod 12 is in line or point contact with the side surface of the jig 16. Rotate and tighten completely.

As described above, when fastening the support bar 12 by tightening the fastening member 14, a plurality of fasteners (three in the drawings) fastened on the pedestal 10 are tightened alternately little by little without being completely tightened at once.

This is because, when the fastening member 14 is completely fastened at once, the position of the support rod 12 which is in line or point contact with the outer circumferential surface of the jig 16 may be changed.

After the support rod 12 is fixed to the support rod 13 such that the support rod 12 contacts the side surface of the jig 16, the jig 16 is separated from the holder block 11, and then the holder block is operated in the same manner as in the conventional process. The rail 6 of the rectangular frame shape is placed on the upper surface of (11) and the frit glass is filled in the space, and then the panel 1 is placed on the upper surface so that both sides of the panel are in close contact with the support rod 12.

Passing the high temperature furnace in such a state, since the pedestal 10 is inclined downward, when the frit glass is melted, the panel 1 slides down in intimate contact with the side surface of the supporting rod 12 to lower the top surface of the rail 6. It is fixed in a uniformly connected state, and both sides of the panel 1 are in line or point contact with the support rod 12 during the operation, so that the panel 1 slides easily while being guided to the support rod 12. do.

On the other hand, in the case of working on a certain model and want to fix the rail (6) to the panel (1) of the model of different specifications, the fastening member 14 that was tightened without separating the support rod 12 from the support rod 13 In the state of slightly unscrewing, put the jig according to the change of the model on the upper surface of the holder block 11, as described above, and then slowly rotate the support rod 12, the center of which is eccentric. Just tighten the fastening member 14 at the point of contact with the side will be able to secure the rail (6) to the model other panels (1).

As described above, the present invention has the following advantages over the conventional apparatus.

First, since both sides of the panel 1 are in line or point contact with the support rod 12, the wear caused by the friction is minimized, as well as the frictional resistance is minimized, thereby increasing the life of the support rod 12.

Second, since the distance (S) from the outer circumferential surface of the panel 1 to the rail 6 can be varied without using the support rods eccentrically centered with the support rods 12, one model includes one support rod 12. Will be able to produce CRTs.

Third, even if the supporting rod 13 for fixing the support rod 12 by repeated use can be compensated for by the eccentric support rod 12 even if the support rod 13 is variable by the high heat of the high heat, the position of the rail 6 is accurate The CRT can be produced.

Fourth, since the position of the rail 6 fixed to the panel 1 is correct, the master pattern called the artwork 15 is brought close to the inner surface of the panel 1 through the inner space of the rail 6 during the post-exposure process. The phenomenon of hitting the rail 6 in the process can be prevented in advance, thereby prolonging the expensive artwork life.

Claims (8)

In the manufacturing method of the flat-colored CRT tube for fixing the rail on the inner surface of the panel while the rail filled with the adhesive is placed on the holder block and a flat panel is placed on the upper side thereof so that both sides of the panel are guided to the supporting means. Panel guide method of a flat color cathode ray tube for fine-tuning the position of the panel by adjusting the support means according to the position of the panel to guide the position of the panel. 2. The method of claim 1, wherein the support means is a support member having a central axis eccentric to vary the position of the panel. A panel guide device provided with a holder block on which an adhesive-filled rail is mounted, and a supporting means for supporting the side surface of a flat panel, wherein the supporting means for supporting both sides of the panel is positioned so that the rail is fixed in position at the panel. Panel guide device of a flat color cathode ray tube, characterized in that the variable installation. The method of claim 3, wherein Panel holder of the flat color cathode ray tube, characterized in that the holder block and the support means is fixed to the pedestal inclined to one side. The method of claim 3, wherein The support means is a panel guide device of a flat color cathode ray tube, characterized in that the central axis is an eccentric support member so that the distance (S) from the outer peripheral surface of the panel is variable. The method of claim 5, The support member is a panel guide device of a flat color cathode ray tube, characterized in that the support rod eccentric outer peripheral surface from the central axis. The method of claim 6, Panel support device of a flat color cathode ray tube, characterized in that the support rod is made of a cylindrical shape. The method of claim 6, The panel guide device of the flat color cathode ray tube, characterized in that the support rod is made of a convex cylindrical shape in point contact with both sides of the panel.