JPH0457058B2 - - Google Patents
Info
- Publication number
- JPH0457058B2 JPH0457058B2 JP2864984A JP2864984A JPH0457058B2 JP H0457058 B2 JPH0457058 B2 JP H0457058B2 JP 2864984 A JP2864984 A JP 2864984A JP 2864984 A JP2864984 A JP 2864984A JP H0457058 B2 JPH0457058 B2 JP H0457058B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust pipe
- tip
- display tube
- fluorescent display
- hermetically sealed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000006059 cover glass Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、螢光表示管の製造方法に関し、特に
組立の完了した螢光表示管を真空排気した後の排
気管の処理方法に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for manufacturing a fluorescent display tube, and more particularly to a method for treating an exhaust pipe after evacuating an assembled fluorescent display tube. .
一般に、螢光表示管を製造する場合、螢光体を
塗布した陽極基板にグリツド、フイラメントなど
の各電極を実装して組立を行い、この組立の完了
した陽極基板と透光性カバーガラスをフリツトガ
ラスにより気密封止して真空容器を形成する。そ
して、前記カバーガラスの側部に設けてあるガラ
スからなる排気管を通して真空排気するととも
に、この排気管をガスバーナ等で切断する気密封
止（チツプオフ）を行つた後、ゲツタフラツシユ
や端子の接続工程を経て螢光表示管が製造されて
いる。
Generally, when manufacturing a fluorescent display tube, electrodes such as grids and filaments are mounted on an anode substrate coated with phosphor and assembled, and the assembled anode substrate and translucent cover glass are bonded to a frit glass. The container is hermetically sealed to form a vacuum container. Then, the vacuum is evacuated through an exhaust pipe made of glass provided on the side of the cover glass, and the exhaust pipe is hermetically sealed (chip-off) by cutting it with a gas burner, etc., and then the getter flash and terminal connection process are performed. After that, fluorescent display tubes were manufactured.
しかしながら、このようにして製造された従来
の螢光表示管においては、排気管の気密封止工程
において排気管の一部が突出した状態で残つてし
まい、その先端部は構造的に非常に弱いものとな
る。そのため、外部から衝撃が加わつたりした時
などにクラツクが生じやすくなり、このクラツク
による管内真空度の不良を起こして品質の安定性
や歩留りが低下するという欠点があつた。 However, in conventional fluorescent display tubes manufactured in this way, a part of the exhaust pipe remains in a protruding state during the process of hermetically sealing the exhaust pipe, and the tip part is structurally very weak. Become something. As a result, cracks are more likely to occur when external shocks are applied, and these cracks cause defects in the vacuum inside the tube, resulting in a reduction in quality stability and yield.
本発明は、上記した従来の欠点を除去するため
になされたもので、排気管を気密封止した後の排
気管先端部に油脂または樹脂からなる保護膜を形
成することにより、外部からの衝撃などに対し排
気管先端部を保護してクラツクの発生を防止する
ことができる螢光表示管の製造方法を提供するも
のである。以下、本発明の実施例を図面に基いて
説明する。
The present invention was made in order to eliminate the above-mentioned conventional drawbacks, and by forming a protective film made of oil or resin on the tip of the exhaust pipe after the exhaust pipe is hermetically sealed, it is possible to protect the exhaust pipe from external impact. The present invention provides a method for manufacturing a fluorescent display tube that can protect the tip end of an exhaust pipe and prevent cracks from occurring. Embodiments of the present invention will be described below with reference to the drawings.
第１図乃至第３図は本発明による螢光表示管の
製造方法の一実施例を説明するための概略工程図
であり、ここで、真空排気した螢光表示管の排気
管を気密封止する工程までは第１図に示すよう
に、従来と同様の方法で行う。すなわち、第１図
において、まず、日字状の表示パターンを有する
螢光体２を塗布した陽極基板１上にグリツド、フ
イラメントなどの各電極を実装して組立を行い、
この組立の完了した陽極基板１と透光性カバーガ
ラス３をフリツトガラス（図示せず）により気密
封止して表示管としての真空容器を形成する。次
に前記カバーガラス３の側部に装着してあるガラ
スからなる排気管４を通して真空排気した後、こ
の排気管４をガスバーナ等で切断し、気密封止す
る。これにより前記排気管４はその一部の先端部
５が突出した状態で残存し、その先端５ａが第１
図に示すように円錐状となる。なお、第１図中、
６は陽極基板１上の側部に配線パターンと対応し
てそれぞれ形成された導出導電体、７は排気管４
をカバーガラス３に封着するフリツトガラスであ
る。
1 to 3 are schematic process diagrams for explaining one embodiment of the method for manufacturing a fluorescent display tube according to the present invention, in which the exhaust pipe of the fluorescent display tube that has been evacuated is hermetically sealed. The steps up to this point are carried out in the same manner as in the conventional method, as shown in FIG. That is, in FIG. 1, first, each electrode such as a grid and a filament is mounted and assembled on an anode substrate 1 coated with a phosphor 2 having a diagonal-shaped display pattern.
The assembled anode substrate 1 and transparent cover glass 3 are hermetically sealed with a frit glass (not shown) to form a vacuum container as a display tube. Next, after evacuation is performed through an exhaust pipe 4 made of glass attached to the side of the cover glass 3, the exhaust pipe 4 is cut with a gas burner or the like and hermetically sealed. As a result, the exhaust pipe 4 remains with its tip 5 partially protruding, and its tip 5a remains in the first position.
It has a conical shape as shown in the figure. In addition, in Figure 1,
6 is a lead-out conductor formed on the side of the anode substrate 1 corresponding to the wiring pattern, and 7 is an exhaust pipe 4.
This is a frit glass that seals the cover glass 3 to the cover glass 3.
このように組立の完了した螢光表示管１０は排気
管先端部５が突出してその先端５ａは構造的に非
常に弱いものとなる。そのため、前記排気管先端
部５を第２図に示すように、加熱ヒータ１２を含
む油脂槽１１において約150℃に加熱溶融させた
油脂（例えば真空ピツチ）１３中に矢印方向に浸
漬して取り出す。そして、この排気管先端部５を
第３図に示すように、垂直状態にしてその先端部
５に付着した油脂を自然冷却で固めることによ
り、排気管先端部５に、先端５ａが比較的厚い膜
厚で被覆された油脂からなる保護膜１５を形成す
ることができる。In the fluorescent display tube 10 that has been assembled in this manner, the exhaust pipe tip 5 protrudes, and the tip 5a becomes structurally very weak. Therefore, as shown in FIG. 2, the exhaust pipe tip 5 is immersed in the direction of the arrow in an oil or fat (e.g., vacuum pitch) 13 heated and melted at about 150° C. in an oil or fat tank 11 containing a heater 12 and taken out. . Then, as shown in FIG. 3, by holding the exhaust pipe tip 5 vertically and solidifying the oil and fat attached to the tip 5 by natural cooling, the exhaust pipe tip 5 has a relatively thick tip 5a. A protective film 15 made of oil and fat that is coated with a film thickness can be formed.
このように、構造的に弱い排気管先端部５に保
護膜１５を被着することによつて、真空排気した
螢光表示管１０の排気管４を気密封止後に作業的
に生じやすい取扱いミスによる排気管先端部への
衝撃やクリツプピンの半田付時に半田かぶりの熱
シヨツクなどを上記保護膜１５で緩和させること
ができる。そのため、従来のように、排気管先端
部５は外的衝撃によつてクラツクを発生しにくく
なり、それによる管内真空度の不良を防止し、従
つて、品質の安定性、歩留りの向上をはかること
ができる。 By coating the protective film 15 on the structurally weak exhaust pipe tip 5, it is possible to prevent handling errors that are likely to occur after the exhaust pipe 4 of the evacuated fluorescent display tube 10 is hermetically sealed. The protective film 15 can alleviate the impact on the tip of the exhaust pipe caused by the heat exchanger and the heat shock caused by solder fogging during soldering of the clip pin. Therefore, unlike in the past, the exhaust pipe tip 5 is less likely to crack due to external impact, thereby preventing a defective vacuum in the pipe, thereby improving quality stability and yield. be able to.
なお、上述した実施例では排気管先端部に油脂
からなる保護膜を形成する場合について示した
が、本発明はこれに限定されるものではなく、排
気管先端部にエポキシ樹脂などの樹脂を塗布しこ
れを紫外線照射または加熱（約150℃）により硬
化させて約0.5mm程度の膜厚で保護膜を形成する
ことにより、上述と同様に排気管先端部を外的衝
撃から保護することもできる。 Although the above-mentioned embodiment shows a case in which a protective film made of oil and fat is formed at the tip of the exhaust pipe, the present invention is not limited to this, and resin such as epoxy resin may be applied to the tip of the exhaust pipe. By curing this by UV irradiation or heating (approximately 150°C) to form a protective film with a thickness of approximately 0.5 mm, the tip of the exhaust pipe can be protected from external impact in the same manner as described above. .
以上説明したように、本発明の製造方法によれ
ば、真空排気した螢光表示管の排気管を気密封止
した後にその排気管先端部に油脂または樹脂から
なる保護膜を形成することにより、外部からの衝
撃に対し排気管先端部を保護してクラツクの発生
を防止できるので、螢光表示管の製造に際し、品
質の安定性および歩留りの向上をはかることが可
能になる。
As explained above, according to the manufacturing method of the present invention, after the exhaust pipe of the evacuated fluorescent display tube is hermetically sealed, a protective film made of oil or resin is formed on the tip of the exhaust pipe. Since the tip of the exhaust pipe can be protected against external impacts and the occurrence of cracks can be prevented, it is possible to improve quality stability and yield when manufacturing fluorescent display tubes.
第１図の第３図は本発明による螢光表示管の製
造方法の一実施例を説明するための概略工程図で
ある。
１……陽極基板、２……螢光体、３……透光性
カバーガラス、４……排気管、５……排気管先端
部、６……導出導電体、７……フリツトガラス、
１０……螢光表示管、１１……油脂槽、１３……
油脂、１５……保護膜。
FIG. 3 of FIG. 1 is a schematic process diagram for explaining one embodiment of the method for manufacturing a fluorescent display tube according to the present invention. DESCRIPTION OF SYMBOLS 1... Anode substrate, 2... Fluorescent material, 3... Translucent cover glass, 4... Exhaust pipe, 5... Exhaust pipe tip, 6... Leading conductor, 7... Fritted glass,
10... Fluorescent display tube, 11... Oil tank, 13...
Oil and fat, 15...protective film.
Claims (1)
カバーガラスがフリツトガラスにより気密封止さ
れてなる螢光表示管を排気管を通して真空排気す
る工程と、前記排気管を気密封止する工程と、前
記気密封止された排気管の先端部を加熱溶融され
た油脂に浸漬するかあるいは樹脂を塗布して該排
気管の先端部に保護膜を形成する工程からなるこ
とを特徴とする螢光表示管の製造方法。1. A step of evacuating a fluorescent display tube, in which an anode substrate on which predetermined electrodes are mounted and a translucent cover glass are hermetically sealed with a fritted glass, through an exhaust pipe, and a step of hermetically sealing the exhaust pipe. , a step of forming a protective film on the tip of the exhaust pipe by immersing the tip of the hermetically sealed exhaust pipe in heated and molten oil or applying a resin. Display tube manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2864984A JPS60175341A (en) | 1984-02-20 | 1984-02-20 | Manufacture of fluorescent character display tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2864984A JPS60175341A (en) | 1984-02-20 | 1984-02-20 | Manufacture of fluorescent character display tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60175341A JPS60175341A (en) | 1985-09-09 |
| JPH0457058B2 true JPH0457058B2 (en) | 1992-09-10 |
Family
ID=12254353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2864984A Granted JPS60175341A (en) | 1984-02-20 | 1984-02-20 | Manufacture of fluorescent character display tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60175341A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62296350A (en) * | 1986-06-16 | 1987-12-23 | Matsushita Electric Ind Co Ltd | Vacuum vessel for image display device |
| KR20010008473A (en) * | 1999-07-01 | 2001-02-05 | 김순택 | Sealing for flat display pannel |
-
1984
- 1984-02-20 JP JP2864984A patent/JPS60175341A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60175341A (en) | 1985-09-09 |
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