JPS633416B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plasma display device in which a gas discharge is caused between opposing electrodes by applying an alternating current voltage to electrodes covered with opposing dielectric materials sandwiching a gas medium capable of discharging. The present invention relates to a method of manufacturing a panel, and particularly to a method of manufacturing a plasma display panel with improved sealing method and lead wire drawing method.

FIG. 1 shows an example of a method for drawing out lead wires of a plasma display panel. For example, electrodes 3 and 5 are formed on a pair of insulating plates 1 and 2 made of transparent glass plates, respectively, and the surfaces of these electrodes 3 and 5 are covered with transparent dielectric films 4 and 6, and These insulating plates 1 and 2 are placed opposite to each other with a gas space 8 interposed therebetween by a spacer 7, and the electrodes 5 and lead wires 11 are connected to each other within the gas space 8 via a conductive adhesive material 9. Connect with
Further, the outer periphery is hermetically sealed with a fritted glass 10, and the gas space 8 is further evacuated and filled with an inert gas such as neon. For such plasma display panels, lead wire 1
1 enters the gas space 8 through the frit glass 10, a leak path is likely to occur depending on the surface condition of the lead wire 11 and the fit of the frit glass 10 to the lead wire 11. Therefore, the surface condition of the lead wire 11 must be strictly controlled. Since the frit glass 10 must be applied so as to wrap around the lead wire 11, there is a drawback that workability is poor.

This drawback is that the fixing of the lead wire 11 and the frit glass 10 that hermetically seals the gas space 8 are the same.
This occurs because the lead wire 11 passes through the frit glass 10 and reaches the gas space 8.

SUMMARY OF THE INVENTION The present invention aims to eliminate the above-mentioned drawbacks and provide a manufacturing method that provides a reliable, easy-to-work, and inexpensive plasma display panel.

According to the present invention, a first insulating plate has an inner surface formed with a first electrode covered with a dielectric, and a second insulating plate has an inner surface formed with a second electrode covered with a dielectric. an insulating plate arranged so that the first electrode and the second electrode face each other, and a lead wire connecting the first electrode and the second electrode to an external drive circuit. Also, in the method for manufacturing a plasma display panel in which a gas is sealed between the first insulating plate and the second insulating plate, one of the first insulating plate and the second insulating plate. A first frit glass is deposited on one insulating plate so as to surround at least a connection point between the first electrode or the second electrode and the lead wire, and After attaching a second frit glass to a portion facing the first frit glass and the connection portion, the first insulating plate and the second insulating plate are combined, and then the first frit glass and the first frit glass are attached. The first insulating plate and the second insulating plate are melted and the lead wire is sandwiched between the first insulating plate and the second insulating plate in a sandwich structure.
A method for manufacturing a plasma display panel is obtained, which is characterized in that the plasma display panel is sealed with an insulating plate.

Plasma obtained by the production method of the present invention
In the display panel, the lead wires are sandwiched between the first and second insulating plates, so they have sufficient strength, and since they are connected to the electrodes of the insulating plates within the sealed frit glass, there is no leakage path. .

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 shows the three parts that make up the invention. The first part is made by forming electrodes 3 on a transparent glass plate 1, covering the surfaces of these electrodes with a transparent dielectric film 4, and then forming a fritted glass 12 by silk screen printing. . The second component is a lead frame 13 that integrates lead wires for leading the electrodes of the first and third components to the outside. The third part is a transparent glass plate 2
Electrodes 5 are formed on top, the surfaces of these electrodes are covered with a transparent dielectric film 6 to form a spacer 7, a conductive adhesive material 9 is applied to the electrode extraction part, and then frit glass is coated by silk screen printing. Form 14. In this case, the frit glass 14 is bonded to the lead frame 13 via the conductive adhesive material 9.
Form around the periphery. Further, the thickness of the frit glass 14 is the same as the thickness of the lead frame 13, or is slightly thinner. In the case of this embodiment, the thickness of the lead frame 13 is 200 μm, and the thickness of the frit glass 14 is 180 to 200 μm.

Next, these three parts are assembled as shown in FIG. In FIG. 3, a transparent glass plate 1 is provided with an electrode 3, a transparent dielectric 4 and a frit glass 12 as shown in the first part of FIG. On the other hand, an electrode 5, a transparent dielectric 6, a spacer 7, a conductive adhesive material 9, and a frit glass 14 are formed on the transparent glass plate 2 as shown in the third part of FIG. The lead frame 13 is aligned on the conductive adhesive material 9 of the transparent glass plate 2, and the transparent glass plate 1 is assembled by applying force in the direction of the arrow in FIG. At this time, lead frame 1
3 is surrounded by frit glasses 12 and 14 on three sides and conductive adhesive material 9 on one side, so there is no need to consider positional deviation or the like.

Next, while applying force in the direction of the arrow in Figure 3, the combined transparent glass plates 1 and 2 and lead frame 13 were placed in an electric furnace and the temperature was gradually raised, until the temperature reached about 300℃. At this time, the conductive adhesive material 9 melts and adheres the electrode 5 and lead frame 13. Next, when the temperature reaches about 400°C, the frit glasses 12 and 14 begin to melt, and when the temperature reaches 450°C, the frit glasses 12 and 14 become fluid, and the force in the direction of the arrow in Fig. 3 causes the frit glasses 12 and 14 to melt. 1 is pressed to the thickness of the spacer 7. At this time, the frit glasses 12 and 14 are completely fused to seal the transparent glass plates 1 and 2, and at the same time, the lead frame 13 is also completely fixed to the transparent glass plates 1 and 2.

FIG. 4 shows how the parts are sealed in this way. In FIG. 4, the frit glass 10 is
This shows that the frit glasses 12 and 14 of FIG. 3 are completely fused and integrated. Gas space 8 includes transparent glass plates 1 and 2 and fritted glass 1
0 and has very good bonding properties, so there is no possibility of a leak path occurring. The lead frame 13 is sandwiched between transparent glass plates 1 and 2, and the gap is filled with fritted glass 10.
Since it is filled and glued, it has sufficient strength.
Furthermore, it is clear that the lead wire can be drawn out from the electrode 3 of the transparent glass plate 1 in the same manner by exchanging the transparent glass plates 1 and 2, which is not specified in this embodiment.

According to the manufacturing method of the present invention, alignment of electrodes and lead frames is easy, glass plates can be sealed and lead frames can be bonded at the same time, and highly reliable plasma display panels without leakage paths can be produced. can get.

[Brief explanation of the drawing]

FIG. 1 is a sectional view schematically showing a conventional plasma display panel sealing and terminal extraction method. FIGS. 2A, B, and C are schematic component diagrams illustrating the manufacturing method of the present invention. FIG. 3 is a sectional view showing a schematic combination of parts to explain the manufacturing method of the present invention. FIG. 4 is a schematic cross-sectional view of a plasma display panel obtained by the manufacturing method of the present invention. 1, 2...transparent glass plate, 3, 5...electrode,
4, 6...Transparent dielectric film, 7...Spacer, 8
...Gas space, 9...Conductive adhesive material, 10,1
2, 14... Fritz glass, 11... Lead wire, 13... Lead frame.

Claims (1)

[Claims] 1. A first insulating plate having a first electrode covered with a dielectric material formed on its inner surface, and a second insulating plate having a second electrode covered with a dielectric material formed on its inner surface. The first electrode and the second electrode are arranged to face each other, and have a lead wire connecting the first electrode and the second electrode to an external drive circuit, and the first electrode and the second electrode are arranged to face each other. In the method for manufacturing a plasma display panel in which a gas is sealed between an insulating plate and a second insulating plate, one of the first insulating plate and the second insulating plate. at least the first electrode or the second electrode;
A first frit glass is applied so as to surround the connection point between the electrode and the lead wire, and a second frit glass is applied to a place on the other insulating plate facing the first frit glass and the connection point. After that, the first insulating plate and the second insulating plate are combined, and then the first frit glass and the second frit glass are melted to connect the lead wire to the first insulating plate. A method of manufacturing a plasma display panel, comprising: sealing the first insulating plate and the second insulating plate while sandwiching the first insulating plate and the second insulating plate in a sandwich structure.