KR100322059B1 - Fluorescent display - Google Patents

Abstract

PURPOSE: A fluorescent display is provided to reduce the defective of product by integrating a side wall on one of upper and lower plates which are facing to each other on the other side of a cathode and an anode. CONSTITUTION: A case having an anode(80) and a cathode(90) is provided to protect them. A fluorescent material(81) is applied on an upper surface of the anode(80). The fluorescent material(81) emits light when it collides with a thermal electron radiated from the cathode(90). The case is comprised of an upper body(60) and a lower plate(70). An upper plate(61) placed on an upper surface of the cathode(90) and a side wall(62) integrated with the upper plate(61) are provided on the upper body(60). Where the side wall(62) is coupled to the lower plate(70) placed on a lower of the anode(80), an enclosure is formed.

Description

Fluorescent Display

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent display device, and more particularly, to a fluorescent display device having an improved structure of a casing for protecting a cathode and an anode.

1 and 2 illustrate an example of a fluorescent display device widely used as a device for displaying various letters and numbers. FIG. 1 is a schematic separated perspective view thereof, and FIG. 2 is a combined perspective view of the fluorescent display device shown in FIG. As illustrated, the fluorescent display includes an anode 40 coated with a phosphor 41 on an upper surface thereof, and a cathode 50 for emitting hot electrons to emit phosphor 41 coated on the anode 40. And a case for internally protecting the positive electrode 40 and the negative electrode 50. The case is formed by joining the upper plate portion 10, the lower plate portion 30, and the side wall portion 20 to each other by frits, and to the upper plate portion 10, the lower plate portion 30, and the side wall portion 20. As a result, a space part for accommodating the anode 40 and the cathode 50 is provided.

However, in the conventional fluorescent display device having such a structure, the upper plate portion 10, the lower plate portion 30, and the side wall portion 20 may be formed in a case for protecting the positive electrode 40, the negative electrode 50, and the like. Since it is to be bonded to each other by frit), there is a problem that the production process is complicated, which leads to an improvement in productivity. In addition, since a case is formed by joining a plurality of parts, there is a problem in that a poorly bonded state is likely to occur.

The present invention has been made to solve such a problem, and by improving the structure of the case to be able to delete part of the bonding process by frit, it is easy to form the case, can suppress the poor bonding and more clean appearance The purpose is to provide a fluorescent display device.

In order to achieve the above object, the fluorescent display device according to the present invention

And a case having a cathode coated with a phosphor, a cathode disposed to be spaced a predetermined height apart from the anode, and having a cathode for emitting hot electrons to emit the phosphor, and an enclosed space for protecting the anode and the cathode therein. The case has a pair of plate portions facing each other with the anode and the cathode therebetween, and a side wall portion provided around the plate portions to form the space portion with the pair of plate portions,

The side wall portion of the singer case is characterized in that the edge portion of any one of the pair of plate portions is formed by bending.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a schematic exploded perspective view of an embodiment of a fluorescent display device according to the present invention, and FIG. 4 is a combined perspective view of the fluorescent display device shown in FIG.

Referring to the drawings, the fluorescent display device according to the present invention is provided with a positive electrode 80 and a negative electrode 90 and a case thereinto protect them. A phosphor 81 is coated on the upper surface of the anode 80, and the phosphor 81 emits light when it collides with hot electrons emitted from the cathode 90, which is spaced a predetermined height apart from the anode 80.

On the other hand, the case is formed by combining the upper body 60 and the lower plate portion 70 by the frit, the upper body 60 and the upper plate portion 61 and the upper plate portion 61 located on the upper portion of the cathode 90 The side wall part 62 formed integrally is provided. Such an upper body 60, for example, jig 600, the glass plate body 651 having an extension portion 621 to be a side wall portion to the edge of the body 611 to be the upper plate portion, as shown in FIG. It can be obtained by bending the extension 621 in a direction perpendicular to the body 611 while placing it on top and applying heat to the boundary 610 between the body 611 and the extension 621 to melt. In the upper body obtained through this process, as shown in FIG. 3, the portion 63 where the side wall portion 62 and the side wall portion 62 are in contact with the frit is filled with the side wall portion 62 and the side wall portion 62. Bonding and sealing).

When the end portion of the side wall portion 62 of the upper body 60 is coupled to the lower plate portion 70 positioned below the anode 80 by frit, the anode 80 is formed by the upper body 60 and the lower plate portion 70. ) And a sealed space in which the cathode 90 is embedded is formed.

Accordingly, in the conventional fluorescent display device described with reference to FIGS. 1 and 2, the case is formed by the plate-shaped upper plate portion 10 and the lower plate portion 30 and a plurality of sidewall portions 20 which are pre-bonded to them. Contrary to the above, in the fluorescent display device according to the present invention, since the upper plate portion 61 and the side wall portion 62 are provided with an upper body 60, the case is easy to manufacture. That is, since it is not necessary to separately manufacture the member forming the side wall portion, the manufacturing process of the member forming the side wall portion can be eliminated, and the process of frit-gluing the side wall portion to the upper plate is omitted, thereby simplifying the manufacture of the case.

In addition, since the frit joining process between the upper plate portion and the side wall portion is eliminated, the portion that spoils the range and appearance of occurrence of a bonding defect corresponding thereto is reduced.

Meanwhile, in the present embodiment, the side wall portion is integrally formed with the upper plate portion, but the side wall portion may be integrally formed with the lower plate portion.

As described above, the fluorescent display device of the present invention has a side wall portion integrally formed on any one of an upper plate portion and a lower plate portion facing each other with a cathode and an anode interposed therebetween, thereby facilitating manufacturing and reducing defects. The effect is contributing to improving competitiveness.

1 is a schematic separated perspective view of a conventional fluorescent display device;

2 is a combined perspective view of a case of the fluorescent display device shown in FIG. 1;

3 is a schematic exploded perspective view of a fluorescent display device according to the present invention;

4 is a perspective view illustrating a case of the fluorescent display device shown in FIG. 3;

5 is a view for explaining the manufacturing process of the upper body shown in FIG.

* Explanation of symbols for main parts of the drawings

60 ... upper body 61 ... upper part

62 ... side wall 70 ... bottom plate

80 ... anode 81 ... phosphor

90 ... cathode

Claims (2)

And a case having a cathode coated with a phosphor, a cathode disposed to be spaced a predetermined height apart from the anode and having a cathode for emitting hot electrons to emit the phosphor, and an enclosed space for integrating and protecting the anode and the cathode. A case includes a fluorescent display device having a pair of plate portions facing each other with the anode and the cathode interposed therebetween, and sidewall portions formed around the plate portions to form the space portion together with the pair of plate portions. And the sidewall portion of the case is formed by bending an edge portion of one of the pair of plate portions. The method of claim 1, And the side wall portion is integrally formed with a plate portion positioned above the cathode of the pair of plate portions.