JPH0240835A - Manufacture of fluorescent display panel - Google Patents

Abstract

PURPOSE:To enable the repair of the regeneration of a display panel in an effectively sealed state by enclosing a piled up assembly of a filament electrode plate and a grid electrode plate with a glass face plate and frames and a rear base plate, and heating and sealing the whole assembly while evacuating the enclosed space. CONSTITUTION:An assembly 26 constructed by piling up a filament electrode plate 20 and a grid electrode plate 22 and spacers between them through sealing materials is placed on the upper surface of a glass face plate 12 through sealing material. Then frames 24, 28 are placed on the upper side of the glass face plate similarly through sealing material so as to enclose the assembly 26. Then a rear base plate 14 is placed on the frames 24, 28 similarly through sealing material, and the whole assembly is heated to seal the glass face plate 12, the frames 24, 28, the rear base plate 14 and the assembly 26 to each other as an unit while evacuating the enclosed space from the frames 24, 28. Thereby the whole assembly can be sealed with high performance to repair or regenerate the panel.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is applicable to terminals for displaying one character in a figure such as a computer, and a display used for displaying multi-digit characters and numbers such as a message board. This invention relates to improvements in the manufacturing method of fluorescent display panels such as containers.

(Prior Art) Cell-type fluorescent display panels have recently been proposed in order to increase the area and reduce the voltage. This fluorescent display panel consists of a face glass substrate, a rear substrate, an anode electrode and a phosphor layer formed on the upper surface of the face glass substrate, and a spacer interposed between the face glass substrate and the rear substrate. It consists of an M-layered filament electrode plate and a grid electrode plate. This fluorescent display panel is driven by constantly applying a DC voltage of about lθ~30V between the filament electrode and the anode electrode, and applying a low voltage pulse of several tens of V to the grid electrode to select whether to turn on or off. be able to. In the conventional technology, this fluorescent display panel is manufactured by coating a face glass substrate, a filament electrode plate, a grid electrode plate, and a spacer with a low-melting point sealing material such as frit glass between them, heat-pressing them, and exposing them to air or N2Ar. The laminated parts and the back substrate assembled in this way are subjected to a degassing baking treatment or a hydrogen substitution treatment under a high vacuum of about 1 O-4 to I O-' Torr. After that, the sealing material such as solder or frit glass provided between the laminated component and the back substrate is locally heated to seal the gap between them, and the barium getter is heated with high frequency and blown away to form a fluorescent display panel. 10- necessary for the operation of
A high vacuum of around 'Torr was obtained.

(Problem WJ to be solved by the invention) However, in this conventional method, a large number of laminated components are laminated in a non-vacuum environment, so the number of sealing defects increases considerably. It is not known until the installation stage, and if the sealing between the laminated parts and the back board is defective, there is a drawback that it cannot be repaired and remanufactured.

An object of the present invention is to provide a method for manufacturing a fluorescent display panel that avoids the above-mentioned drawbacks, can be effectively sealed, and can be repaired and recycled.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a face glass substrate, a rear substrate, an anode electrode and a phosphor layer formed by forming a film on the upper surface of the face glass substrate. A method for manufacturing a fluorescent display panel comprising a filament electrode plate and a grid electrode plate laminated between a face glass substrate and a rear substrate with a spacer in between, the filament electrode plate, the grid electrode plate and the spacer therebetween. are laminated with a sealing material between them, and the formed assembly is placed on the top surface of the face glass substrate via the sealing material, and the assembly is similarly sealed on the top surface of the glass face substrate so as to surround this assembly. The frame is placed on the frame through the sealing material, and the back substrate is placed on top of the frame through the sealing material, and the whole is heated while exhausting air from the frame to heat the face glass substrate, the frame, the back substrate, and the assembly. The present invention provides a method for manufacturing a fluorescent display panel characterized by bonding three-dimensional objects together.

[Effect]

In this way, the assembly of the filament electrode plate and the grid electrode plate is surrounded by the face glass substrate, the frame body, and the back substrate, and when these are collectively heated and fused while being evacuated,
The entire structure can be sealed with high sealing performance.

(Embodiment) An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a method of the present invention for manufacturing a fluorescent display panel 10, which includes a face glass substrate 1
2, and a rear substrate 14 that can be formed from glass or the like.
1ill of the anode electrode 16 and the phosphor layer 18 (see FIG. 3) formed by sequentially forming films on the upper surface of the face glass substrate 12, and the face glass substrate 12 and the rear substrate 14.
It consists of a filament electrode plate 20 and a plurality of grid electrode plates 22 which are laminated with a spacer (not shown) in between. The positive 8i electrode 16 is made of ITO (IntOx
The phosphor layer 18 can be formed by forming a transparent material such as ZnO:
Approximately 200% by F sputtering method or chemical vapor phase method
It can be formed by forming a film with a thickness of 0. Furthermore, the first
In the figure, reference numeral 24 is a spacer marked between the filament electrode plate 20 and the rear substrate 14. In the illustrated embodiment, the face glass substrate 12 has aluminum on its upper surface, as shown in FIG. It has an anode terminal 16a, a filament electrode terminal 20a, and a grid electrode terminal 22a, which are formed by forming a film of metal such as nickel to a thickness of 3,000 to 5,000 layers using a DC sputtering method.

In the method of the present invention, first, as shown in FIG. 1, a filament electrode plate 20, a grid electrode plate 22, a spacer (not shown) therebetween, and a spacer 24 above and below the filament electrode plate 20, a grid electrode plate 22, and a frit glass paste are placed between them. The assembly 26 is formed by laminating them with a sealing material (not shown) in between and bonding them under heat.

Next, this assembly 26 is similarly placed on the upper surface of the glass face substrate 12 via a sealing material (not shown) such as a fritted glass paste, and a similar sealant is placed on the upper surface of the glass face substrate 12 so as to surround this assembly 26. A frame 28 is placed on the frame 28 via a sealing material (not shown) such as frit glass paste. The frame 28 can be made of, for example, glass or a metal such as 426 alloy treated with insulation.

In addition, as will be described later, in the embodiment shown in FIG. 6, which has an exhaust port 28a for evacuating the inside thereof, the filament electrode terminal 20a and the grid electrode terminal 22a are connected to the face glass. Since the filament electrode plate 20 and the grid electrode plate 22 are formed on the upper surface of the substrate 12, as shown in FIG. wire 30
connected via.

The rear substrate 14 is similarly placed on the frame 28 via a sealant (not shown) such as glass frit paste.

The face glass substrate 12 combined in this way,
The assembly 26 and the rear substrate 14 are connected to the exhaust port 28 of the frame body 28.
The entire face glass substrate 12.a is heated while being evacuated by a vacuum device such as a vacuum pump (not shown). The frame 26, the back substrate 14, and the assembly 26 are bonded together. In this case, high-frequency heating of the (Ha, AI)Ni getter is preferable because the inside of the panel can be made into a high vacuum of about IO-'Torr, and this evacuation operation is as shown in FIG.

It is preferable to form a notch 26a in each part of the assembly 26 to reduce air resistance during exhaust.

(Effects of the Invention) According to the present invention, as described above, the 11i layer assembly of the filament electrode plate and the grid electrode plate is surrounded by the face glass substrate, the frame body, and the rear substrate, and these are collectively vacuum-treated. Since it is heat-fused while being pulled, the whole can be sealed with a highly sealable part, making it possible to obtain a fluorescent display panel that is effectively hermetically sealed. There is a practical benefit in that the sealing condition can be inspected, repaired, and regenerated later through the process.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view illustrating a method of manufacturing a fluorescent display panel according to the present invention, FIG. 2 is a front view of a fluorescent display panel manufactured by the method of the present invention, and FIG. 3 is a face used in the present invention. FIG. 3 is a top view of a glass substrate. 10---- one fluorescent display panel, 12---- face glass substrate, l 4---- one rear substrate, 16----
--Anode electrode, l 8---- Phosphor layer, 20---
--Filament electrode plate, 22--Grid electrode plate, 24--M-frame body, 26-----Assembly, 28
-1---Frame body, 28a---1 exhaust port.

Claims (1)

[Claims] A face glass substrate, a rear substrate, an anode electrode and a phosphor layer formed on the upper surface of the face glass substrate, and a layer laminated with a spacer interposed between the face glass substrate and the rear substrate. In a method for manufacturing a fluorescent display panel comprising a filament electrode plate and a grid electrode plate, an assembly formed by laminating the filament electrode plate, the grid electrode plate, and a spacer therebetween with a sealing material interposed between them. is placed on the upper surface of the glass face substrate via a sealing material, and a frame is similarly placed on the upper surface of the glass face substrate via the sealing material so as to surround the assembly,
Similarly, the rear substrate is placed on the frame via a sealing material, and the whole is heated while exhausting air from the frame to integrate the face glass substrate, the frame, the rear substrate, and the assembly. A method for manufacturing a fluorescent display panel characterized by adhesive bonding.