JPH05205618A - Manufacture of plane type display device - Google Patents

Abstract

PURPOSE:To put a number of electrodes in between a base board and a stamper and subject to a baking process by inserting ceramic plates with both sides metallized between a plurality of flat plate electrodes, and positioning and provisionally fixing the electrodes. CONSTITUTION:A plurality of electrodes 19 in the form of flat plate are provided, and an electron beam emitted by a linear cathode 18 is pushed by a back plate 17 to the electrode 19 side and either converged or deflected in the horizontal and vertical directions, and phosphor arranged on the anode surface of a screen 20 is allowed to emit light one after another. Therein a plurality of electrodes 19 are installed on a baking base board 23, and a joining part is provided in the part no electron beam does not pass between the electrodes 19, and glass for adhesion 24 is installed. In the condition that ceramic plates 26 with both sides metallized are inserted, the electrodes 19 are provisionally fixed through the metallized portion 25, then joined and secured with the glass 24. Because of provisional fixing of the electrodes 19 which have undergone position coordination by the metallized portion of the plates 26 inserted at the four corners, it is practicable to put in the electrodes 19 in a stamper 28 and subject to a baking process at one time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat-panel display device for a video equipment and a manufacturing method thereof.

[0002]

2. Description of the Related Art In recent years, for the purpose of achieving an apparatus capable of displaying a color television image in a flat type by using an electron beam, a screen on a screen is vertically divided into a plurality of sections. The electron beam is vertically deflected for each section to display a plurality of lines, and further divided into a plurality of sections in the horizontal direction, and R, G, and
The phosphors such as B are made to sequentially emit light, and the R, G,
There is one that displays a television image as a whole by controlling the irradiation amount of the electron beam to the phosphor such as B by a color image signal. Below, referring to the drawings,
An example of the above-described conventional flat-panel display device will be described.

The conventional flat-panel display device has a rear electrode 1, a linear cathode 2 as an electron beam source, and a cathode 2 in this order from the rear to the front, as shown in FIG. The front container 5 is made of glass and the back container 6 is made of glass or metal. The front container 5 is made of glass and the back container 6 is made of a plurality of flat electrodes 4 for focusing the electron beam on a predetermined phosphor on the screen 3 and controlling the irradiation amount. These components are housed inside and the inside of the container is evacuated.

In order to control the electron beam emitted from the cathode 2 serving as an electron beam source, irradiate phosphors such as R, G, and B on the screen to display an image, the plurality of flat plate electrodes are used. It is necessary that each flat electrode is electrically insulated and maintained at a predetermined interval with high precision.Adhesive glass is placed on the joint portion of each flat electrode where the electron beam does not pass. Then, the plate electrodes are joined and fixed through these bonding glasses.

FIG. 4 shows a method of joining and fixing the flat plate-like electrodes. In FIG. 4, 7 is each flat plate-shaped electrode arranged on the firing substrate 8, and 9 is arranged between the respective flat plate-shaped electrodes 7 at a joint portion provided in a portion where the electron beam of each flat plate-shaped electrode 7 does not pass. The bonding glass, 10 is a space-maintaining glass installed at a bonding portion provided between the flat electrodes 7, 7 between the flat electrodes 7 where the electron beam does not pass, and 11 is perpendicular to the firing substrate 8. Each plate-shaped electrode 7 with a standing positioning pin
The plate-shaped electrodes 7 are positioned relative to each other by penetrating through the positioning holes 12 provided in the. In this state, the glass for bonding is melted in the firing furnace while being pressed by the stamper 13 on each plate electrode 7, and then heated to a temperature at which the glass is crystallized and cooled to room temperature again, and the plate electrodes are bonded together. Complete the fixation. Numeral 14 designates the positioning pin 1 between the firing substrate 8 and the pin housing 15 in order to allow the positioning pin 11 to freely work in the horizontal direction during the thermal expansion of each plate electrode 7.
It is a sphere holding the bottom of 1. Reference numeral 16 is a metal plate for protecting the firing substrate 8 and the stamper 13.

[0006]

However, when such a joining and fixing method is used, since the clearance between the positioning hole 12 and the positioning pin 11 provided in each plate electrode 7 is small, the positioning pin 11 is positioned. It was difficult to automatically insert into the hole 12.

Also, the positioning hole 12 and the positioning pin 1
Since the clearance of 1 is small, the friction between the hole and the pin is large, and a large number of electrodes cannot be placed between the firing substrate 8 and the stamper 13 for firing, resulting in extremely low productivity.

[0008]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a linear cathode extending in parallel with the screen in the vertical direction of the screen at an equal pitch, and a linear cathode extending from the cathode. Of a flat-panel display device in which a plurality of flat plate-shaped electrodes which are superposed at a predetermined interval for controlling the electron beam of the above and a phosphor arranged on the anode surface are enclosed in a vacuum container In the method, the plurality of flat plate-shaped electrodes are contacted with each other through the bonding glass arranged in a portion where the electron beam does not pass, and the plurality of flat plate-shaped electrodes are provided between the front and back surfaces. It is characterized in that the metallized ceramic is positioned in the inserted state, temporarily fixed through the metallized portion of the ceramic plate, and then bonded and fixed through the bonding glass.

[0009]

In the present invention, since a plurality of flat plate-shaped electrodes are temporarily fixed by the ceramic plates whose front and back surfaces are metalized and then fixed by the bonding glass, the conventional positioning pins are used. Can be omitted.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, from the rear to the front, 17 is a back electrode, 18 is a linear cathode as an electron beam source which is parallel to the screen and stretched at equal pitches in the vertical direction of the screen, and 19 is a line extending from the cathode. A plurality of flat plate-like electrodes, 20 are screens that are stacked at a predetermined interval in order to control the electron beam. An electron beam emitted from a linear cathode 18 as an electron beam source is extruded by a back electrode 17 toward a plurality of flat plate electrodes 19 and converged / deflected in a horizontal direction and a vertical direction in a plurality of flat plate electrodes 19 to screen 20. R, G, B placed on the anode surface of
The fluorescent substances such as are sequentially emitted. Reference numeral 21 is a front container and 22 is a back container, and the inside of the container is kept in a vacuum.

In order to irradiate a predetermined position of the phosphor with a predetermined size by irradiating the electron beam, it is necessary that the flat plate electrodes of the plurality of flat plate electrodes 19 are accurately joined and fixed to be integrated. There is.

FIG. 2 shows a method for manufacturing the above flat panel display device.
FIG. 4 is an embodiment of the present invention, in which flat electrodes are bonded and fixed.
It shows how to In FIG. 2, reference numeral 19 is a baked substrate 2.
Each plate-shaped electrode installed on 3 and 24 is each plate-shaped electrode 1
A portion of the flat plate-shaped electrode 19 between which the electron beam does not pass
It is a glass for joining installed in the joint part
In this embodiment, the sectional shape is 0.5 square and the composition is Pb.
O-87, 5 wt%, B ₂O₃-9.5 wt%, ZnO-
2 wt%, SiO₂-0.4 wt%, Al₂O₃-0.6
Placed a crystallized glass rod that is wt% and crystallizes after melting
is doing. Reference numeral 25 denotes each flat electrode 1 between each flat electrode 19.
At the joint provided in the part where 9 electron beam does not pass
An installed glass for maintaining a gap, which in this embodiment is
The cross-sectional shape is 0.45 square and the composition is PbO-40wt%, B
₂O₃-40wt%, SiO₂-10wt%, Na₂O-1
An amorphous glass rod of 0 wt% is arranged. this
In the embodiment, the electron beam of each flat electrode 19 does not pass through.
Glass and the space between the joints
When installing a holding glass, use a nitro cell at the joint.
Applying a loin-based adhesive to hold the gap between the glass and the glass
The glass is temporarily fixed. 26 is metallized on the back surface
Are provided at the four corners of each plate electrode 19
Ceramic plates, each flat plate pre-aligned with each other
The electrode 19 and the metallized portion 27 are welded and temporarily fixed.
It Each flat electrode 19, glass for bonding, and spacing
Since the holding glass is temporarily fixed, one embodiment of the present invention
Then, it is automatically sucked by the suction head all at once and on the baking substrate 23.
It is installed automatically. Numeral 28 is a stamper which is a fired substrate 23
A space is maintained between each plate electrode 19 and the bonding glass 24 between
Glass for joining in a firing furnace while keeping the holding glass 25 under pressure
Melt 24 and heat it to a temperature at which it will crystallize
Cool to room temperature again, and fix each plate electrode 19
Complete. At this time, the plate electrodes 19 are inserted into the four corners.
It is temporarily fixed by welding at the metallized part 27 of the ceramic plate.
Therefore, even if the bonding glass 24 melts,
Therefore, the joint is fixed while maintaining the accuracy of mutual alignment.
It In this embodiment, laser welding is applied to each flat plate electrode 19 and
Welding the metallized part 27 of the ceramic plate
It

In the present invention, as described above, each flat plate electrode 1
It is not necessary to use a pin or the like for mutual positioning of the plate electrodes 9, and by simply inserting the metal plates 29 into the upper and lower surfaces of each plate electrode 19, three plate electrodes 19 are simultaneously fired in two stages to improve productivity.
Has doubled.

In the above embodiment, the fired substrate 23 is used.
The three flat plate-shaped electrodes 19 are simultaneously fired in two steps between the stamper 28 and the stamper 28. However, the same effect can be obtained by firing more electrodes in multiple steps at the same time.

[0015]

As described above, according to the present invention, when a plurality of flat plate-like electrodes are bonded and fixed, the flat plate-like electrodes which are previously aligned with each other by the metallized portions of the ceramic plates inserted in the four corners. Since 19 is temporarily fixed, automation is easy, and since a large number of electrodes can be fired in multiple stages at the same time, the productivity can be remarkably improved.

[Brief description of drawings]

FIG. 1 is a sectional perspective view showing a flat-panel display device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a method of joining and fixing flat plate electrodes of a flat panel display device according to an embodiment of the present invention.

FIG. 3 is a sectional perspective view showing a conventional flat-panel display device.

FIG. 4 is a diagram showing a method for joining and fixing flat plate electrodes of a conventional flat display device.

[Explanation of symbols]

 17 Back Electrode 18 Linear Cathode 19 Flat Electrode 20 Screen 21 Front Container 22 Back Container 23 Firing Substrate 24 Bonding Glass 25 Interval Holding Glass 26 Ceramic Plate 25 Metallized Part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuo Hori 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A linear cathode that is parallel to the screen and is stretched at equal pitches in the vertical direction of the screen, and a plurality of linear cathodes that are superposed at a predetermined interval to control a linear electron beam emitted from the cathode. In the method of manufacturing a flat panel display device, the flat plate electrode and the phosphor arranged on the anode surface are encapsulated in a vacuum container, wherein the plurality of flat electrodes are The plurality of flat plate-shaped electrodes are positioned so that the ceramics whose front and back surfaces are metallized are inserted between the plurality of flat plate-shaped electrodes so that they are bonded to each other through the bonding glass arranged in a portion which does not pass through, and the ceramic plate A method for manufacturing a flat-panel display device, which comprises temporarily fixing through a metallized portion and then joining and fixing through the bonding glass.