JPH0458434A - Manufacture of fluorescent lamp - Google Patents

Abstract

PURPOSE:To seal an air-tight container main body and a front plate in good air-tight condition by putting the front plate horizontally so as to set a patterned plane of glass frit to face upward and putting the air-tight container main body on the front plate and melting the glass frit while load is applied from upside. CONSTITUTION:A front plate 2 on which glass frit 8 is printed is put horizontally in the way of setting the patterned glass frit to face upward and an air- tight container main body 1 bearing a cylindrical weigh 17 is put on the plate and an electrode filament storage part 4 and six electrodes 14a, 14b, 14c, 15a, 15b, 15c are simultaneously sealed by heating in a furnace. By this method, besides the air-tight container main body 1, gravity of the weight 17 is applied to the glass frit 8 and thus a fluorescent lamp for a color image display apparatus with good sealed property between the air-tight container main body 1 and the front plate 2 is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method of manufacturing a fluorescent lamp used as a light emitting element of a color image display device, and more specifically, the present invention relates to a method of manufacturing a fluorescent lamp used as a light emitting element of a color image display device. This relates to a method of manufacturing a fluorescent lamp that is sealed with frit glass to form an airtight container. Conventional technology A fluorescent lamp that is used as a fluorescent lamp with multiple picture elements used in light emitting elements of color image display devices, etc. An example is shown in FIG. In this figure, the fluorescent lamp consists of an airtight container body 1, a front plate 2 sealed with frit glass on the front surface, and one end sealed with frit glass in a hole 3 made in the center of the rear surface of the airtight container body 1. Even though the airtight container is constituted by an electrode filament storage section 4 made of a glass tube whose other end is sealed, a lattice-shaped partition wall 5 is provided inside the gas container body to separate each discharge space 6a.

6b, 6c, 7a, 7b, 7c are formed on the inner surface of the airtight container body 1 which forms the discharge spaces 6a, 7a. The inner surface of the airtight container body 1 is coated with a red phosphor (the inner surface of the airtight container body 1 forming the discharge spaces 6c, 7c is coated with blue phosphor, respectively), and the electrodes 14a, 14 provided within the airtight container body 1 are coated with a red phosphor. b,
14 c, 15 a, 15 b.

15c and the electrode filament 9 disposed in the electrode filament storage section 4, six discharge paths are formed. In FIG.
12 is the exhaust pipe, 13 is external introduction! 16 each indicates a mercury getter.

Such an airtight container can be used as a fluorescent lamp by applying heat to evacuate the inside of the container, filling the inside with a rare gas, and then heating the mercury getter 16 from the outside with high frequency to supply mercury into the airtight container. As a method of sealing the airtight container main body 1 and its front plate 2 using frit glass 8, as shown in FIG. Even if the frit glass 8 baked on the face plate is stacked one on top of the other, and the weight of the airtight container body 1 is applied to the frit glass 8 by approximately 40 mg per 1 am2 of the front plate 2, the problem that the invention attempts to solve. However, when sealed in this way, the weight of the airtight container body 1 including the electrode filament storage section 4 is light, so
This invention was made in order to solve the above-mentioned problem, in which the airtightness between the airtight container body 1 and the front plate 2 was poor, and leakage occurred during the exhaust process. To provide a method for manufacturing a fluorescent lamp that can be sealed with a face plate while maintaining good airtightness and can be manufactured with good mass productivity.Means for solving the problemTo solve this problem However, in the method for manufacturing a fluorescent lamp of the present invention, when sealing a front plate with frit glass to the front surface of an airtight container body having a phosphor film on the inner surface to form an airtight container, the frit glass is attached to the airtight container body. The coating is applied to the front plate so as to include the outer periphery of the front surface, the front plate is placed horizontally with the patterned surface of the frit glass facing upward, and the airtight container body is placed on the front plate. The container was placed so that the front surface faced downward, and a load of 70 mg to 200 mg, including the weight of the airtight container body, was applied to the frit glass via the airtight container body per 1 cm2 of the front plate. According to the present invention, since a sufficient load is applied to the glass frit, the front surface of the airtight container body and the front plate are sealed together by melting the frit glass. EXAMPLE Hereinafter, an example of the present invention will be explained with reference to the drawings, but first, when manufacturing a fluorescent lamp for a color image display device,
Prepare the airtight container body 1 as shown in Figure 3. Next, apply a phosphor suspension to the inner surface of the concave portion of the airtight container body 1, and dry it to form a coating film. A mixed solution containing a binder and a solvent for fluorescent ethyl cellulose is used as the suspension. After that, the airtight container body 1 is sent to a firing furnace (not shown), and the coating film is gradually heated and fired to form the phosphor. After forming the film, this firing process is carried out at a temperature of about 600°C, where the binder such as ethyl cellulose is decomposed and scattered.
As shown in FIG. 2, the airtight container main body l is placed horizontally, and a frit glass 8 is attached to the inner surface of the front plate 2 so as to include the outer circumference.
This frit glass 8 is coated by printing using a screen printer (not shown). Powder containing a binder is used for the frit glass 8. Next, the front plate 2 is heated in a heating furnace (not shown), which is a calcination furnace.
The binder was blown off from the frit glass 8 by gradually heating it to about 390°C through a . Place the front plate 2 horizontally with the patterned surface of the frit glass facing upward.
The airtight container main body 1 with a cylindrical weight 17 of about 50 g is placed thereon, and the electrode filament storage section 4 and six electrodes 14a are placed thereon.

14b, 14c, 15a, 15b, and 15c are simultaneously sealed together through a heating furnace (not shown).In addition to the airtight container body 1, a heavy weight car glass with a weight 17 is attached. Since it is added to the frit 8, it is possible to obtain a fluorescent lamp for a color image display device with good sealing performance between the airtight container main body 1 and the front plate 2.Also, by using the weight 17 as a loading means, it is possible to obtain a fluorescent lamp for a color image display device. According to experiments, the weight of the airtight container body 1 including the electrode filament storage section 4 is 7 cm2 per 1 cm2 of the front plate 2.
When a weight 17 with a weight of less than 0 mg is added to the glass frit 8, the adhesion between the airtight container body 1 and the front plate 2 is poor.A leak occurred during the exhaust process. When a weight 17 that exceeds 200 mg per l cm2, including the weight of the airtight container body 1 including the electrode filament storage section 4, is added to the glass frit 8, the l-1 airtight container body 1 or the front plate 2 Cracks occurred due to the distortion. Therefore, when sealing the airtight container body 1 and the front plate 2, the weight applied to the glass frit 8 sandwiched between them is per cm2 of the front plate 2. 70mg to 200m including the weight of the airtight container main body l including the electrode filament storage part 4
It is necessary to select and use a weight within the range of ,
Fluorescent lamps can be manufactured with good mass productivity.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a method for manufacturing a fluorescent lamp according to an embodiment of the present invention. FIG. 2 is a plane showing the printed pattern of frit glass formed on the front plate. FIG. Figure 4 is a strabismus doctor to explain the method of manufacturing a fluorescent lamp studied before completing the present invention. Figure 5 is an exploded perspective view of an example of a fluorescent lamp for a color image display device. Container body 2...Front plate 8
・・・・・・Frit glass 17・・・・・・Weight. Name of agent: Patent attorney Shigetaka Awano Figure 1/Ki Hiroshi Container Book 4 Z Front 4 Electrolytic filament U4 Inscription μ 1゛4 Funeral map/l)/lf4〃 ＼ 11 ノ

Claims (2)

[Claims] (1) When forming an airtight container by sealing a front plate with frit glass to the front surface of an airtight container main body having a phosphor film on the inner surface, the frit glass is attached so as to include the outer periphery of the front surface of the airtight container main body. The method is applied to the front plate, the front plate is placed horizontally with the patterned surface of the frit glass facing upward, and the airtight container body is placed on the front plate so that the front of the airtight container body is facing downward. Further, a load of 70 mg to 200 mg, including the weight of the airtight container main body, is applied to the frit glass per 1 cm^2 of the front plate via the airtight container main body, and the frit glass is melted to make the airtight A method for manufacturing a fluorescent lamp, comprising sealing the front surface of a container body and the front plate. (2) A method for manufacturing a fluorescent lamp according to claim 1, characterized in that a weight is used as a means for applying a load to the frit glass.