JP2002117777A - Gas discharge panel and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lighten a panel by narrowing the part outer than a display area as much as possible, and to keep a sealing member at a distance from a display area to prevent characteristics such as flickering and the like in the vicinity of the peripheral part of the display area from being deteriorated, by giving a sealing member a role to seal the peripheral end panel and also securing strength as an envelope by joining two substrates even though the sealing member is slenderly formed. SOLUTION: The envelope is airtightly sealed by forming the slender sealing member at the terminal end part of a substrate, and panel strength is secured by reinforcing the outside of the sealing member by a fixing member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a gas discharge panel and a method for manufacturing a gas discharge panel.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, a gas discharge panel has an upper panel substrate 4 on which a display electrode 1, a dielectric layer 2, and a protective layer 3 are formed, a data electrode 5, a dielectric layer 6, a partition 7,
The lower panel substrate 8 on which the phosphors 11 are formed is arranged to face each other, and the periphery thereof is hermetically sealed with a sealing member 9.
2, the envelope 10 is prepared. The sealing member 9 is placed in a paste state around the lower panel substrate 8 at a position about 20 mm away from the display area where the partition walls 7 and the like are formed.
It is formed into a frame shape with a width of mm, and is heated and melted in a sealing process at 450 ° C., spreads between the two substrates, and the end portion extends from the display area to about 15 mm from the display area to about 15 mm to complete the sealing.
Next, after the inside of the envelope 10 is evacuated to a vacuum through the exhaust pipe 12, a discharge gas is introduced at about 500 Torr (66.5 kPa), and the exhaust pipe 12 is sealed to complete a gas discharge panel.

[0003]

By the way, it has been desired to make the panel smaller and lighter by making the outside of the display area as narrow as possible with respect to the conventional gas discharge panel. On the other hand, characteristic deterioration such as flickering is likely to occur near the outer peripheral portion of the display area. Therefore, it has been desired to move the sealing member as far away from the display area as possible.
For these problems, it is effective to form the sealing member as thin as possible. However, conventionally, the sealing member has a role of sealing the outer peripheral end of the panel and joining the two substrates to ensure the strength as an envelope.
Therefore, if the sealing member is formed to be thin, it is difficult to secure the strength as an envelope even if airtight sealing can be performed.

The present invention has been made in view of these inconveniences, and a sealing member is formed at an edge of a substrate as much as possible so that the sealing member is located as far as possible from a display area so as not to affect display characteristics. Further, it is an object of the present invention to provide a gas discharge panel and a method of manufacturing the gas discharge panel, in which the panel strength is not deteriorated even if the outside of the display area is reduced by reducing the width of the sealing member to reduce the size and weight of the panel. Aim.

[0005]

A gas discharge panel according to the present invention has a thin sealing member formed at the terminal end of a substrate, hermetically seals an envelope as an airtight sealing member, and has an outer side of the airtight sealing member. Is secured by a fixing member to secure panel strength.

According to the present invention, even if the sealing member is formed to be thin, the strength of the panel is not degraded, and the outside of the display area can be narrowed. A panel and a method for manufacturing the panel can be provided.

[0007]

An embodiment according to the present invention will be described with reference to the drawings.

FIG. 1 is a simplified cross-sectional view of a gas discharge panel according to the present embodiment. FIG. 2 is a cross-sectional view schematically illustrating a method of manufacturing the gas discharge panel according to the present embodiment.
4 is a cross-sectional view showing another gas discharge panel according to the present embodiment, and FIG. 5 is a cross-sectional view showing another method for manufacturing the gas discharge panel according to the present embodiment in a simplified manner.

(Embodiment 1) In FIG. 1, reference numeral 17 denotes a hermetic sealing member, and reference numeral 13 denotes a fixing member.

Although the material of the hermetic sealing member 17 is the same as that of the conventional sealing member 9, the hermetic sealing property and the substrate fixing property of the sealing member 9, that is, the two substrates are firmly joined to each other, A member mainly having airtightness for a role of ensuring strength as an enclosure is shown. Therefore, the hermetic sealing member 17 alone does not have sufficient strength against the deflection of the substrate caused by handling of the envelope 10 and the like, and the hermetic sealing member 17 may crack or peel off. obtain.

First, an upper panel substrate 4 on which a display electrode, a dielectric layer, and a protective layer are formed, a data electrode, a dielectric layer, a partition,
A lower panel substrate 8 having a phosphor layer formed thereon is prepared. Here, the area where the partition wall is formed on the lower panel substrate 8 is:
About 20 m from the end on the short side of the lower panel substrate 8
m, and the long side is about 15 mm. Next, the lower panel substrate 8
The paste of the hermetic sealing member 17 is applied with a dispenser or the like to a width of about 2 mm at a position of about 12 mm from the partition forming area. Here, the paste of the hermetic sealing member 17 is 7 cc of a vehicle (for example, Vehicle C, manufactured by Tokyo Ohka Co., Ltd.) in which a solvent and a resin component are mixed with 50 g of a frit (for example, LS0206 manufactured by Nippon Electric Glass Co., Ltd.) containing low melting glass as a main component. And mix well.

Next, the lower panel substrate 8 and the upper panel substrate 4
Are arranged opposite to each other, the substrate is heated by an electric furnace or the like to melt the hermetic sealing member 17, the periphery of the two substrates is hermetically sealed, and the envelope 10 is sealed.
To complete. At this time, the hermetic sealing member 17 has a width of about 4 mm at a position about 11 mm from the partition forming area. Here, it is desirable that the exhaust pipe 12 is also joined at the same time. Subsequently, the inside of the envelope 10 is evacuated to fill the discharge gas to complete the panel.

Subsequently, the periphery of the upper panel substrate 4 and the periphery of the lower panel substrate 8 are bonded by a fixing member 13. The fixing member 13 may be a commercially available room temperature curing type, a heat curing type, or an ultraviolet curing type as long as it can bond glass. Although not shown in the figure, when there is a concern that the resin may swell due to moisture absorption, it is also effective to apply a desiccant or vacuum grease to the surface of the fixing member 13.

Here, the electric furnace is used for melting the hermetic sealing member 17, but it is also possible to irradiate the light and heat it by absorbing its energy. As one example, there is a method of melting by heating with a laser as shown in FIG. The laser may be a YAG laser, a carbon dioxide laser, or a semiconductor laser. As in the conventional example, the sealing member 9
When the coating width of is wide, it was necessary to increase the power while scanning laser light or shifting the focus. However, as in the present embodiment, the hermetic sealing member 1
By narrowing the width of formation of 7, the laser can be used with a narrow focus even with low power, and the hermetic sealing can be performed more efficiently and at low cost. Further, although not shown in the drawing, heating with a halogen lamp or the like is also possible.

According to the embodiment of the present invention, even if the conventional sealing member is formed to be thin, the strength of the panel is not deteriorated, and the outside of the display area can be narrowed, so that the panel can be reduced in size and weight and the display characteristics can be improved. A gas discharge panel can be realized.

(Embodiment 2) A method of manufacturing a gas discharge panel according to the present embodiment will be described with reference to FIG.

In FIG. 3, reference numeral 14 denotes an O-ring, and reference numeral 13 denotes a fixing member.

An O-ring can be used for hermetic sealing. Here, it is desirable to use an O-ring made of Viton in consideration of environmental friendliness. An O-ring having a wire diameter of 130 μm and having a large size surrounding the end portion inside the overlapping portion of the two substrates is used.

First, an upper panel substrate 4 on which a display electrode, a dielectric layer and a protective layer are formed, a data electrode, a dielectric layer, a partition,
A lower panel substrate 8 having a phosphor layer formed thereon is prepared. The envelope 10 is manufactured by aligning the O-ring 14 between the two substrates. At this time, the exhaust pipe 12 is previously attached to the back surface of the lower panel substrate 8 with a sealing member or the like.

Next, the interior of the envelope 10 is evacuated from the exhaust pipe 12, and then the discharge gas is introduced to a predetermined pressure to seal off the exhaust pipe. Finally, the overlapping peripheral portions of the two substrates are fixed by the fixing member 13 to complete the gas discharge panel.

Even if the conventional sealing member is formed thin according to the embodiment of the present invention, the strength of the panel is not deteriorated, and the O-ring is very thin, and the vicinity of the end of the overlapping portion of the two substrates is provided. The gas discharge panel can be easily arranged, the area outside the display area can be narrowed, and the panel can be reduced in size and weight and the display characteristics can be improved.

(Embodiment 3) Another method of manufacturing a gas discharge panel according to the present embodiment will be described with reference to FIG.

In FIG. 4, 15 is a side wall, 17 is a hermetic sealing member, and 13 is a fixing member.

First, when the partition 7 is formed on the lower panel substrate 8, the side wall 15 is formed in a frame shape near the outer peripheral end of the lower panel substrate 8 using the same material as the partition 7. Next, a paste of the hermetic sealing member 17 is formed on the top of the side wall 15. Subsequently, the lower panel substrate 8 and the upper panel substrate are arranged to face each other, and then heated to 450 ° C. to melt the hermetic sealing member 17 and hermetically seal the two substrates to produce the envelope 10. At this time, it is desirable to join the exhaust pipes 12 at the same time.

After joining the exhaust pipe 12 in advance,
Two substrates are opposed to each other and hermetically sealed with a laser 17.
Can be melted to hermetically seal the two substrates.

Next, after the fixing member 13 is formed around the substrate, the inside of the envelope 10 is evacuated to a vacuum, and after the discharge gas is introduced, the exhaust pipe 12 is completely sealed to complete the gas discharge panel.

FIG. 5 shows a modification of the method for manufacturing a gas discharge panel described above.

As shown in FIG. 4, when forming the partition wall 7 on the lower panel substrate 8, the side wall 15 is formed in a frame shape around the substrate. At this time, the partition 7 is mainly composed of glass. The side wall 15 is formed higher than the partition wall 7, for example, the partition wall 7.
Is formed with a thickness of 110 μm, the side wall is set to about 130 μm. Next, after attaching the exhaust pipe 12 to the back of the lower panel substrate 8 in advance, the exhaust tube 12 is disposed so as to face the upper panel substrate 4, and the top of the side wall 15 is hermetically sealed while being melted by a laser to complete the envelope. It is. The side wall 15 is mainly composed of glass and can be easily heated and melted by a laser. Here, it is also possible to heat with light from a halogen lamp or the like instead of the laser.

According to the embodiment of the present invention, even if the conventional sealing member is formed to be thin, the strength of the panel is not deteriorated, and the outside of the display area can be narrowed, so that the panel can be reduced in size and weight and the display characteristics can be improved. A gas discharge panel can be realized.

[0030]

As described above, according to the gas discharge panel of the present invention, the sealing member is formed on the edge of the substrate as much as possible, and the sealing member is kept as far as possible from the display area so as not to affect the display characteristics. Further, it is possible to provide a gas discharge panel and a method of manufacturing the gas discharge panel, which are made thinner so that the portion outside the display area is made smaller and the panel strength is not deteriorated even if the panel is made smaller and lighter.

[Brief description of the drawings]

FIG. 1 is a simplified cross-sectional view showing a gas discharge panel according to the present embodiment.

FIG. 2 is a cross-sectional view showing a simplified method of manufacturing the gas discharge panel according to the embodiment.

FIG. 3 is a sectional view showing another gas discharge panel according to the present embodiment.

FIG. 4 is a sectional view showing another gas discharge panel according to the present embodiment.

FIG. 5 is a simplified cross-sectional view showing another gas discharge panel manufacturing apparatus according to the present embodiment.

FIG. 6 is a partial cross-sectional view schematically showing a display panel according to a conventional mode.

[Explanation of symbols]

 Reference Signs List 10 envelope 13 fixing member 14 O-ring 15 side wall 17 hermetic sealing member

Claims (6)

[Claims] 1. A gas discharge panel having a hermetic sealing member and a fixing member. 2. A method comprising the steps of forming a hermetic sealing member on one substrate, arranging the hermetic sealing member to face the other substrate, heat-melting the hermetic sealing member and hermetically sealing it, and forming a fixing member. A method for manufacturing a gas discharge panel, comprising: 3. A step of forming a hermetic sealing member on one substrate, a step of arranging the hermetic sealing member in opposition to the other substrate, a step of irradiating the hermetic sealing member with light to heat and melt and hermetically seal, and forming a fixing member. A method for manufacturing a gas discharge panel, comprising: 4. A step of forming an envelope by arranging two substrates facing each other via an O-ring, a step of evacuating the interior of the envelope and enclosing a discharge gas of a predetermined pressure, and the two substrates A method for manufacturing a gas discharge panel, comprising a step of fixing the periphery of the panel with a fixing member. 5. A step of simultaneously forming a side wall when forming a partition wall on one of the substrates, a step of forming a hermetic sealing member on the top of the side wall, a step of disposing two substrates facing each other, and heating and melting the hermetic sealing member to form a side wall. A method for manufacturing a gas discharge panel, comprising: a step of bonding a top portion and a counter substrate to hermetically seal them; and a step of forming a fixing member around two substrates. 6. A step of simultaneously forming side walls at the time of forming a partition wall on one substrate, a step of irradiating light to the top of the side wall to bond the top of the side wall to the opposing substrate, and hermetically sealing, and forming a fixing member around two substrates. A method for manufacturing a gas discharge panel, comprising: