JPH04262339A - Manufacture of plasma display panel - Google Patents

Abstract

PURPOSE:To minimize generation of discharge gas which cannot be reused when discharge gas is sealed in a plasma display panel. CONSTITUTION:To seal discharge gas in a plasma display panel 1, a glass cap 102 is in advance mounted to part of the panel 1, and a capsule 101 of thermoplastic resin in which discharge gas is encapsulated compressedly is placed in the cap 102. After exhaustion of the panel 1, the sealing part 9 of an exhaust pipe 7 is sealed and cut, and the capsule 101 is destroyed by a condenser lamp (not illustrated), and thus the discharge gas is released.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to the manufacture of plasma display panels, and more particularly to gas filling processes.

0002

[Prior Art] Figure 3 shows a conventional plasma display.
FIG. 2 is a schematic diagram for explaining a method of filling a panel with gas. In the figure, 1 is a plasma display panel, 2 is a gas supply source, 3 is a manifold that connects the plasma display panel to exhaust equipment, 4 is a gas supply pipe,
5 is a solenoid valve for gas supply; 6 is a pressure gauge for measuring gas pressure; 7
is an exhaust pipe attached to a plasma display panel. The inside of the panel is evacuated through this exhaust pipe 7, and discharge gas is supplied into the panel through this exhaust pipe 7. To explain this further, the manifold 3 to which the exhaust pipe 7 of the plasma display panel is connected is connected to exhaust equipment (not shown) to create a desired vacuum inside the plasma display panel. Then, communication between the manifold 3 and the exhaust equipment is cut off. Next, the gas supply electromagnetic valve 5 provided in the gas supply piping 4 is opened, and discharge gas is supplied from the gas supply source 2 through the manifold 3 and the exhaust pipe 7 into the plasma display panel. When the pressure gauge 6 reaches the set pressure, the gas supply solenoid valve 5 is closed. Then, the exhaust pipe 7 is sealed and cut, for example, at the sealing portion 9. Thus, plasma
Gas filling of the display panel is completed. It is clear that the foregoing can be repeated to fill the next plasma display panel with gas.

In addition to such a method of filling gas in a plasma display panel, for example, there is a method disclosed in Japanese Patent Application Laid-Open No.
As disclosed in Japanese Patent No. 87167, a plasma display panel having an exhaust pipe is placed in a sealed chamber, the sealed chamber is evacuated to evacuate the inside of the plasma display panel, and then, By introducing a desired discharge gas into this sealed chamber, the discharge gas is introduced into the plasma display panel. and,
A predetermined portion of the exhaust pipe is sealed and cut while it is in a sealed room. There is also a gas filling method in which the plasma display panel is then removed from the sealed chamber.

0004

[Problems to be Solved by the Invention] The conventional gas filling method for plasma display panels wastes a large amount of discharge gas, increasing the manufacturing cost of plasma display panels. . This is because discharge gas is an expensive gas such as argon or neon, and compared to the amount that fills a sealed chamber, only a small amount enters the plasma display panel, and most of it is not reused. It is. Even with the sealing method shown in Figure 3, the remaining discharge gas filled in the manifold 3, gas supply piping 4, or pressure gauge 6 is exhausted during the exhaust stage during the next gas filling of the plasma display panel. stored and not reused. An object of the present invention is to provide a manufacturing method that reduces the amount of expensive discharge gas used and makes plasma display panels inexpensive.

[0005]

[Means for Solving the Problems] A method for manufacturing a plasma display panel according to the present invention includes placing a cap in advance on a part of the panel or in the middle of an exhaust pipe in order to fill the plasma display panel with discharge gas. Installation A capsule in which discharge gas is compressed and sealed is placed in this cap, and after the panel is exhausted, the part of the exhaust pipe that is farther from the panel is sealed beyond the cap, and then the discharge from the capsule is sealed. It is characterized by releasing gas.

[0006]

[Operation] The plasma display panel manufacturing method according to the present invention includes a capsule in which discharge gas is compressed and sealed in a cap formed in a part of the panel or in the middle of the exhaust pipe, and the plasma display panel is exhausted. After sealing and cutting the exhaust pipe, the discharge gas is released from the capsule, so the amount of discharge gas used is only the original internal volume of the panel plus the volume of the newly installed cap.

[0007]

Embodiment A first embodiment of the present invention will be described below with reference to FIG. In FIG. 1, 1 is a plasma display panel, 3 is a manifold that connects the plasma display panel to exhaust equipment, 7 is an exhaust pipe attached to the plasma display panel, and 102 is a pipe provided on the plasma display panel. cap, 1
01 is a capsule in which a mixed gas of argon and neon is compressed and sealed. The cap 102 is made of transparent glass like the exhaust pipe. The capsule 101 is made of an opaque thermoplastic plastic material, for example. In the enclosing method shown in FIG. 1, the manifold 3 to which the exhaust pipe 7 of the plasma display panel is connected is connected to exhaust equipment (not shown) to create a desired vacuum inside the plasma display panel. Then, communication between the manifold 3 and the exhaust equipment is cut off. In this state, for example, the sealing portion 9 is sealed and cut. After that, from the outside of the cap 102, for example, a condensing lamp (
(not shown) to heat and expand the capsule 101 in the cap and break it. Thus, the compressed mixed gas is released from the capsule and enters the inside of the plasma display panel.

FIG. 2 shows a second embodiment of the invention. In this embodiment, the cap 102 is provided in the middle of the exhaust pipe 7. Therefore, after the plasma display panel is evacuated, the exhaust pipe 7 is sealed and cut at the sealing portion 9 which is beyond the cap 102 and is further away from the panel.

[0009]

[Effects of the Invention] As described above, according to the present invention, since no expensive discharge gas such as argon or neon is left in the exhaust manifold 3, etc., the amount of discharge gas used can be reduced. Plasma display panels can be manufactured at low cost.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram for explaining a first embodiment of a method for manufacturing a plasma display panel according to the present invention.

FIG. 2 is a schematic diagram for explaining a second embodiment of the method for manufacturing a plasma display panel according to the present invention.

FIG. 3 is a schematic diagram for explaining an example of a conventional plasma display panel manufacturing method.

[Explanation of symbols]

1 Plasma display panel 2 Gas supply source 3 Manifold 4 Gas supply piping 5 Gas supply solenoid valve 6 Pressure gauge 7 Exhaust pipe 101 Capsule 102 Cap

Claims (1)

[Claims] Claim 1: A method for manufacturing a plasma display panel, which includes: sealing a discharge gas into the plasma display panel by attaching a cap to a part of the panel or the middle of an exhaust pipe in advance, and then filling the plasma display panel with a discharge gas; a compressed and encapsulated capsule is placed in the cap;
A plasma disk characterized in that after the panel is evacuated, gas encapsulation is achieved by sealing a portion of the exhaust pipe beyond the cap and farther from the panel, and then releasing the discharge gas from the capsule.・Method of manufacturing panels.