KR100741768B1 - Method For Bonding Ventilator to Plasma Display Panel - Google Patents

Abstract

The present invention relates to an exhaust rod bonding method of a plasma display panel which enables firing at a low bonding firing temperature.

According to an aspect of the present invention, there is provided a method for attaching an exhaust rod to a plasma display panel, the method comprising: bonding an exhaust rod to an exhaust port formed on a substrate; Fitting a ring glass to an exhaust rod bonded to the substrate and adhering the ring glass fitted to the exhaust rod onto the substrate; And injecting a seal frit between the ring glass and the exhaust rod to bond the ring and the exhaust rod at a low firing temperature.

In the method of bonding the exhaust rod of the plasma display panel according to the present invention, it is possible to bake at a low temperature by using a ring glass instead of a ring-shaped frit glass, and to improve the deterioration of the protective film due to the firing at a high temperature. There are advantages to it.

In addition, since the frit glass is not used, the price of the plasma display panel can be lowered.

Description

Method for Bonding Ventilator to Plasma Display Panel             

1A to 1D are cross-sectional views illustrating steps of a method for bonding exhaust rods of a conventional plasma display panel.

FIG. 2 is a detailed view of the fleet glass shown in FIG. 1C. FIG.

3A to 3D are sectional views showing the steps of the method for attaching the exhaust rod of the plasma display panel according to the present invention.

FIG. 4 shows the ring glass shown in FIG. 3C in detail. FIG.

<Explanation of symbols for main parts of drawing>

2, 32: front board 4, 34: back board

5 inclined portion 6, 36 exhaust bar

8: Fleet Glass 9: Top Face

12: wire 38: ring glass

40: Singlet

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a plasma display panel, and more particularly, to a method for attaching an exhaust rod of a plasma display panel to enable firing at a low bonding firing temperature during a plasma display panel manufacturing process.

As the development and spread of information processing systems increase, the importance of display devices as visual information transmission means is increasing. In particular, the conventional CRT (Cathod Ray Tube) has various problems such as large size, high operating voltage, and display distortion, so that the recent trend of increasing screen size and flatness is not suitable. Planar displays are being actively researched.

Recently, flat display devices such as liquid crystal displays, field emission displays, and plasma display panels (hereinafter referred to as "PDPs") have been actively developed. The PDP emits a phosphor by 147 nm ultraviolet rays generated when the He + Xe or Ne + Xe inert mixed gas is discharged, thereby displaying an image including characters or graphics. Such a PDP is not only thin and large in size, but also simple in structure, and has a high luminance and high luminous efficiency as compared to other flat display devices. Due to these advantages, research on PDP is being actively conducted.

1A to 1D are diagrams illustrating a conventional PDP exhaust rod bonding method. Referring to FIG. 1A, a front substrate 4 and a rear substrate 2 for bonding are provided as a first step of exhaust rod bonding.

The first step is a preparation step for attaching the exhaust rod 6 to the back substrate 2 to exhaust the gas in the space between the back substrate 2 and the front substrate 4.

FIG. 1B shows a rear substrate 2 as a second step of the exhaust rod bonding method, a front substrate 4 and an exhaust rod 6 to be attached to an exhaust port formed in the rear substrate 2 in the vacuum region.

The second step shows that the exhaust rod 6 is attached to the exhaust port formed on the rear substrate 2 by the instant adhesive in order to exhaust the gas in the space between the rear substrate 2 and the front substrate 4.

FIG. 1C is a third step of the method for attaching the exhaust rod, and the exhaust rod 6 for exhausting gas in the vacuum region of the back substrate 2, the front substrate 4, the back substrate 2 and the front substrate 4 is shown. ) And a frit glass 8 for preventing the exhaust rod 6 from falling down.

In the third step, the exhaust rod 6 is attached to the exhaust port on the rear substrate 2 by the instant adhesive to exhaust the gas in the space between the rear substrate 2 and the front substrate 4, and the frit glass 8 Is glued together so that it comes around the exhaust rod (6).

As shown in FIG. 2, the frit glass 8 has a concave central portion, and an edge portion except the concave portion is formed in a shape of an inclined 5 between the concave portion and the top surface 9, and an exhaust rod 6 is formed in the concave portion. Is inserted.

FIG. 1B shows the exhaust rod 6 for exhausting the gas in the vacuum region of the back substrate 2, the front substrate 4, the back substrate 2 and the front substrate 4 as a final step of the exhaust rod bonding method. And a frit glass 8 into which the exhaust rod 6 is to be inserted and a wire 12 for preventing the exhaust rod 6 from falling over.

The final step is that the exhaust rod 6 is attached on the rear substrate 2 by the instant adhesive to exhaust the gas in the space between the rear substrate 2 and the front substrate 4, and the frit glass 8 is exhausted. After attaching with the instant adhesive so as to come around the rod 6, the structure made by bending the wire 12 to prevent the exhaust rod 6 from falling down is injected into the space between the spaces using the one side of the back substrate 2, Prevents rod 6 from falling over.

The exhaust rod bonding process fixes the exhaust rod 6 to the back substrate 2 using the instant adhesive, and uses the structure made by bending the wire 12 to prevent the exhaust rod 6 from falling down. do. In addition, the instant adhesive is burned away by the high temperature during firing.

In this manner, the exhaust rod 6 is bonded to the back substrate 2 and then fired at a temperature of 450 ° C. to complete the bonding process.

Since the firing temperature is 450 ° C., the characteristics of the protective film are deteriorated due to cracking of the surface of the protective film due to the high temperature.

Accordingly, an object of the present invention is to provide an exhaust rod bonding method of a plasma display panel which enables firing at a low bonding firing temperature.

In order to achieve the above object, the exhaust rod bonding method of the plasma display panel according to the present invention comprises the steps of: bonding the exhaust rod to the exhaust port formed on the substrate; Fitting a ring glass to an exhaust rod bonded to the substrate and adhering the ring glass fitted to the exhaust rod onto the substrate; And injecting a seal frit between the ring glass and the exhaust rod to bond the ring and the exhaust rod at a low firing temperature.

Other objects and features of the present invention in addition to the above objects will become apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 3A to 4.

3a to 3d is a view showing the exhaust rod bonding method according to the present invention. Referring to FIG. 3A, a front substrate 32 and a rear substrate 34 for bonding may be provided as the first step of bonding the exhaust rod.

The first step is a preparation step for attaching the exhaust rod 36 to the back substrate 34 in order to exhaust the gas in the space between the back substrate 34 and the front substrate 32.

FIG. 3B is a second step of the exhaust rod bonding method. The exhaust rod 36 for exhausting gas in the vacuum region of the back substrate 34, the front substrate 32, and the back substrate 34 and the front substrate 32 is shown. ).

The second step shows that the exhaust rod 36 is attached to the exhaust port formed on the rear substrate 34 by the instant adhesive to exhaust the gas in the space between the rear substrate 34 and the front substrate 32.                     

FIG. 3C is a third step of the exhaust rod bonding method. The exhaust rod 36 for exhausting gas in the vacuum region of the back substrate 34, the front substrate 32, the back substrate 34 and the front substrate 32 is shown. ), And a ring glass 38 for preventing the glass material 40 from thinning upon firing.

In the third step, the exhaust rod 36 is attached on the back substrate 34 by the instant adhesive to exhaust the gas in the space between the back substrate 34 and the front substrate 32.

The adhesive is glued so that the 38 is around the exhaust rod 36.

The ring glass 38 is formed in an annular ring shape as shown in FIG. 4, and serves to prevent the seallet 40 from being excessively thin when the seallet 40 is spread around the exhaust rod 36 and the baking is completed. do.

3D shows an exhaust rod 36 for exhausting gas in the vacuum region of the back substrate 34, the front substrate 32, the back substrate 34 and the front substrate 32 as a final step of the exhaust rod bonding method. And, the firing is provided with a ring glass (Ring Glass) 38 for preventing the thinning of the glass material (Seal Firt) and the seallet 40 for preventing the exhaust rod 36 to fall.

The last step is the exhaust rod 36 is attached on the back substrate 34 by the instant adhesive to exhaust the gas in the space between the back substrate 34 and the front substrate 32, and the ring glass

After the adhesive is instantaneously glued so that the 38 is around the exhaust rod 36, the space between the ring glass 38 and the exhaust rod 36 is injected into the seallet 40 to prevent the exhaust rod 36 from falling down. do.

In the PDP exhaust rod bonding process, the exhaust rod 36 is fixed to the back substrate 34 by using the instant adhesive. The exhaust rod 36 is formed by the seallet 40 filled around the exhaust rod 36. This is to prevent the fall, the instant adhesive is burned away by the high temperature during firing.

The ring glass 38 is also fixed to the back substrate 34 with instantaneous adhesive, similar to the exhaust rod 36. The ring glass 38 has a seallet 40 spread around the exhaust rod 36 so that plasticity is prevented. When completed, the seallet 40 serves to prevent the thinning. That is, in order to obtain the effect of fixing the bottom of the exhaust rod with a certain thickness of the conventional ring type (Frit Glass), the seallet is trapped in the ring glass to have a certain thickness. .

The seallets, such as the seallets used for bonding the front and back substrates, are manually filled between the fixed exhaust rods and the ring glass, and then subjected to a step of firing.

Thus, by using the ring glass in place of the ring-shaped seallet used for bonding the exhaust rod of the PDP, the same effect as the conventional bonding can be obtained even at the firing temperature lowered by about 25 ° C.

As described above, in the method of bonding the exhaust rods of the plasma display panel according to the present invention, the ring glass is used instead of the ring-shaped frit glass, and thus the baking is possible at low temperature, and the characteristics of the protective film are deteriorated due to the high temperature firing. There is an advantage that can be improved.

In addition, since the frit glass is not used, the price of the plasma display panel can be lowered.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (5)

Adhering an exhaust rod to an exhaust port formed on the substrate; Fitting a ring glass to an exhaust rod bonded to the substrate and adhering the ring glass fitted to the exhaust rod onto the substrate; And injecting a seal frit between the ring glass and the exhaust rod to bond the ring and the exhaust rod at a low firing temperature. The method of claim 1, And the seal frit is the same as the seal frit used for bonding the front substrate and the back substrate. The method of claim 1, The ring glass is an exhaust rod bonding method of the plasma display panel, characterized in that it comprises an annular ring. The method of claim 1, The ring glass is the exhaust rod bonding method of the plasma display panel, characterized in that it comprises a polygonal ring. The method of claim 1, And said firing temperature is 425 [deg.] C.

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