KR19990034458A - Plasma display device - Google Patents

Abstract

The present invention discloses a PDP having a novel configuration.

In order to increase the charge volume of the discharge gas to prevent the PDP life decrease due to contamination, in the present invention, the charge portion is formed in the exhaust pipe, which is composed of a cylindrical or separate container or an auxiliary substrate to further charge a large amount of discharge gas. This is making it possible.

Description

Plasma display device

The present invention relates to a plasma display panel (PDP).

PDP is a type of flat panel display that uses a gas discharge phenomenon for image display, in which two contacts spaced apart from a gas atmosphere cause a discharge according to a potential difference and an interval.

As shown in FIG. 1, the basic configuration of the PDP crosses the electrodes E1 and E2 on two substrates P1 and P2 at which a discharge space V is formed therebetween, maintaining a predetermined interval therebetween. It is a structure which arrange | positions to face and partitions into the partition B and forms a pixel.

The two substrates P1 and P2 are surrounded by the sidewalls W and bonded to each other to form a discharge space V. The analogy of the rear substrate P2 is used to exhaust and charge the discharge space V. The exhaust hole H is formed in the effective part.

On the exhaust hole H, an exhaust pipe X for connection from an exhaust pump is connected. The exhaust pipe X is generally used to prevent long pipe parts P and rapid pressure changes and damage to the pipe parts P. Funnel portion (F) of the funnel form. One such exhaust pipe (X) may be provided at a diagonal position in the case of a large 20 "or more in the case of a small PDP, and four or more in the case of a larger size.

After exhausting the discharge space V to a predetermined vacuum through the exhaust pipe X, the required discharge gas is charged, and the discharge space V is thermally fused to the pipe portion P of the exhaust pipe X by the dotted line. It is sealed.

However, functional layers such as the electrodes E1 and E2 and the partition walls B of the PDP are mainly formed by a simple and inexpensive printing method, which is formed by pulverizing functional particles of the functional layer. A paste is formed by dispersing in a solvent to enable printing with the particles, and drying and firing after printing to form a functional layer.

As a result, a large amount of impurities are left in the functional layer by the printing method, irrelevant to its functioning. In particular, the volatile solvent used for rapid drying is an organic solvent and is added to adjust the fluidity when forming the partition wall (B). Fibrin is also an organic component.

Most of these organic impurities are decomposed and removed by gas during the firing process and the high temperature exhaust process of the functional layer. However, a considerable amount remains, and after the PDP is sealed, residual components are released during aging or use, and then mixed with the discharge gas. This residual impurity eventually contaminates the discharge gas and degrades the discharge characteristics, resulting in shortening the service life of the PDP.

The solution is to suppress the generation of impurities as much as possible, to facilitate the discharge thereof, and to increase the injection amount of the discharge gas.

As the former method, a method of injecting a discharge gas after the end of aging, as described in the present application, can be exemplified. In the latter method, a groove is formed by forming a groove inside the ineffective portion of the substrates P1 and P2. Methods of increasing the injection amount of gas are used.

However, since the substrates P1 and P2 are made of glass having high brittleness, if the grooves are formed in the substrates P1 and P2 that are easily damaged during the manufacturing process, the grooves become notches and become more damaged. Not only is it easy, but also a separate process and equipment such as sand blasting are required for the formation of the groove, which increases the manufacturing cost.

Accordingly, an object of the present invention is to provide a PDP capable of significantly increasing the volume of a discharge gas charged without additional configuration or consumption of air.

1 is a sectional view showing the main part of the structure of a general PDP;

2 to 5 are main cross-sectional views showing the configuration of the present invention PDP, respectively.

<Description of Symbols for Main Parts of Drawings>

P1, P2: Front and Back Boards

V: discharge space

X: exhaust pipe

P: pipe section

P3: Subsidiary Board

W ': side wall

What the inventors of the present invention devised to achieve the above object is that the discharge gap is very fine, about 100 to 150 µm, regardless of the size of the PDP, and as a result, the volume of the discharge space V is also very small. Accordingly, in the case of 20 "PDP, the volume of the discharge space (V) is only about 8 ~ 10cc, even 40" PDP is about 30 ~ 40cc.

In view of this, it is understood that a sufficient volume of charging space is provided outside the PDP to enable preliminary charging of a sufficient amount of discharge gas. Based on this, the present invention provides a charging part in which a discharge gas is charged to a part of the exhaust pipe. It is characterized by including.

Such a charging part may be configured integrally or separately from the funnel part, thereby allowing the charging of additional discharge gas in a relatively large proportion relative to the volume of the discharge space.

As a result, even if impurities are generated during aging or use, the amount of charged discharge gas is large, so that purity can be maintained, thereby greatly improving the characteristics and life of the PDP.

EXAMPLE

Such specific features and advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings. In this description, duplicate descriptions of the same parts as in the prior art will be omitted, and only the features of the present invention will be described in detail with reference to FIG. 2.

The exhaust pipe X, which is joined to the exhaust hole H of the rear substrate P1, is provided with a charging section 1 in which the discharge gas is to be charged according to the characteristics of the present invention. The charging part 1 has a larger diameter than the pipe part P to be connected to the exhaust pump and is formed in a cylindrical shape extending to a considerable length, and thus also performs a buffering function of pressure and stress as in the conventional funnel part (F of FIG. 1). .

When the charging unit 1 is formed in a cylindrical shape in the exhaust pipe X, a considerable amount of discharge gas can be charged. For example, the funnel portion F of the exhaust pipe X of FIG. 1 has a diameter and a height of 1 cm. In this case, the volume of the discharge gas that can remain therein is only 0.26 cc, but in FIG. 2, the volume increases according to the height of the charging unit 1, so that the total height of the charging unit 1 is about 2.1 cc. In the case of the above-described 20 "PDP, if two exhaust pipes X are installed, it can be seen that the volume of the additionally charged discharge gas is about 4.2 cc, which is sufficient to charge almost half of the discharge space charge amount.

As described above, the long cylindrical filling part 1 has a disadvantage in that the height of protrusion of the remaining part of the exhaust pipe X on the rear side of the PDP back substrate P2 is increased after sealing, and thus the flat cylindrical filling part 1 as shown in FIG. It is more preferable to construct. At this time, in order to further reduce the height of the remaining portion, it is more preferable to configure the exhaust pipe (X) so that the pipe portion (P) extends to the side of the charging section (1). This configuration is also preferable when exhausting a plurality of panels of the PDP.

In the embodiment of FIG. 4, on the other hand, the filling part 1 in the form of a container branched from the pipe part P is provided separately from the funnel part F. As shown in FIG.

This configuration is at first glance complicated compared to the configuration of FIG. 2 or 3, but there is an advantage that the container constituting the filling part 1 can be composed of a separate material other than glass, for example, a metallic material.

This is because the configuration of FIGS. 2 and 3 is easy to be damaged in the process of assembling the chassis of the PDP because the remaining portion of the exhaust pipe (X) after sealing is increased by the charging section (1).

On the other hand, the configuration of Figure 5 is a configuration to install the exhaust pipe (X) by attaching a separate auxiliary substrate (P3) on the exhaust hole (H) of the rear substrate (P2) to install the pipe portion (P). In this case, the auxiliary substrate P3 is bonded to the back substrate P2 by the auxiliary side wall W ', which is fired together when the side walls W of the two substrates P1 and P2 are baked. There may be no additional air consumption as it may be.

At this time, the pipe portion (P) may be installed by firing by inserting the glass tubing having a predetermined diameter after the application of the auxiliary side wall (W ') paste.

This configuration of Figure 5 has the advantage that can form a very large volume of the charging portion 1 without leaving a large protrusion on the back substrate (P3).

As described above, according to the present invention, it is possible to additionally charge a large volume of discharge gas without damaging the substrate, thereby reducing the pollution degree of the discharge space. It will greatly extend the service life.

Claims (7)

In the plasma display device, the discharge space between the front substrate and the rear substrate is exhausted and filled and sealed through an exhaust pipe attached to the exhaust hole of the rear substrate. Having a charging unit for additional charging the discharge space in the exhaust pipe Plasma display element characterized by. The method of claim 1, The filling part is formed in a cylindrical shape having a larger diameter than the pipe portion connecting the exhaust pipe to the exhaust pump Plasma display element characterized by. The method of claim 2, The tube portion extends laterally with respect to the charging portion Plasma display element characterized by. The method of claim 1, The filling part is configured in the form of a container connected to the exhaust pipe Plasma display element characterized by. The method of claim 4, wherein The container of the charging unit is made of a metal material Plasma display element characterized by. The method of claim 1, The filling portion is formed by an auxiliary substrate bonded to the auxiliary side wall on the exhaust hole. Plasma display element characterized by. The method according to any one of claims 1 to 6, The pipe portion is installed to penetrate the auxiliary side wall Plasma display element characterized by.