JPH07134943A - Sealing method of cathode-ray tube - Google Patents
Sealing method of cathode-ray tubeInfo
- Publication number
- JPH07134943A JPH07134943A JP27972093A JP27972093A JPH07134943A JP H07134943 A JPH07134943 A JP H07134943A JP 27972093 A JP27972093 A JP 27972093A JP 27972093 A JP27972093 A JP 27972093A JP H07134943 A JPH07134943 A JP H07134943A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- sealing
- tip tube
- temperature
- softening point
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、陰極線管内の真空排気
工程後の陰極線管の封止方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sealing a cathode ray tube after a step of evacuating the inside of the cathode ray tube.
【０００２】[0002]
【従来の技術】テレビジョン等の受像機として用いられ
る陰極線管（ＣＲＴ）は、その製造過程において、ＣＲ
Ｔ内部を真空にする真空排気工程を有する。このＣＲＴ
の真空排気工程では、ＣＲＴのネック管端部のチップ管
（排気管）を用いて真空脱ガスを行い、その後、排気管
を電気封止し、ＣＲＴ内でゲッターフラッシュを行い１
０-6Ｔｏｒｒ程度の真空を保持している。2. Description of the Related Art A cathode ray tube (CRT) used as a television receiver or the like has a CR
There is a vacuum evacuation process to make the inside of T a vacuum. This CRT
In the vacuum evacuation process, the tip tube (exhaust tube) at the end of the neck tube of the CRT is used for vacuum degassing, then the exhaust tube is electrically sealed, and the getter flash is performed in the CRT.
A vacuum of about 0 -6 Torr is maintained.
【０００３】上記チップ管の電気封止工程は、図３に電
気封止全体構成模式図として示すように、陰極線管（Ｃ
ＲＴ）１を構成するパネル２とファンネル３を接続封止
し、得られたＣＲＴ外囲管のネック管４に連続したチッ
プ管５に、封止用小型電気炉６を挿入装着し、その封止
用小型電気炉６をオンし、チップ管を加熱溶融すること
によりなされる。その後、真空排気後の真空度（１０-6
Ｔｏｒｒ程度）を確認し、封止用小型電気炉６をオフす
ることよりチップ管５が図４（ａ）に示すように封止完
了される。ＣＲＴ１の真空排気は主ポンプとしての拡散
ポンプ７とサブポンプとしてのメカニカルポンプ８で行
う。The electric sealing process of the above-mentioned chip tube is as shown in FIG.
RT) 1 is connected and sealed with a panel 2 and a funnel 3, and a small electric furnace 6 for sealing is inserted and mounted in a chip tube 5 continuous with a neck tube 4 of the obtained CRT envelope, and the sealing is performed. This is done by turning on the small electric furnace 6 for stopping and heating and melting the chip tube. After that, the degree of vacuum after evacuation (10 -6
(About Torr), and by turning off the small sealing electric furnace 6, the chip tube 5 is completely sealed as shown in FIG. The CRT 1 is evacuated by a diffusion pump 7 as a main pump and a mechanical pump 8 as a sub pump.
【０００４】封止が完了したチップ管５はヤスリ等でそ
の封止部（加熱による軟化溶着部）がカットされ（図４
（ｂ））、その部位にステムベース（図示せず）が挿入
される。上記陰極線管１の封止工程でのチップ管５の加
熱は従来図５に示すように、時間と共に電気炉の温度を
チップ管ガラス材質の作業温度を７００℃以上に、例え
ば約７５０℃まで上昇させている。The chip tube 5 which has been completely sealed is cut with a file or the like at its sealed portion (softened and welded portion by heating) (see FIG. 4).
(B)), a stem base (not shown) is inserted into that portion. As shown in FIG. 5, the heating of the tip tube 5 in the step of sealing the cathode ray tube 1 is performed by raising the temperature of the electric furnace with time to 700 ° C. or more of the working temperature of the glass material of the tip tube, for example, to about 750 ° C. I am letting you.
【０００５】[0005]
【発明が解決しようとする課題】上記のような高い温度
まで加熱する加熱条件では、封止作業が何らかのマシー
ントラブルでIndex Stopした場合、高温に加熱されてい
る部位はオーバー（over）加熱となり図６（ａ）に示す
ように、チップ管５の一部がＣＲＴ１のネック管４内に
盛り上がり突起部１０や熱歪みによりクラック１１を生
じ、完全な封止ができない場合があった。Under the heating conditions for heating to a high temperature as described above, if the sealing work is index stopped due to some machine trouble, the portion heated to a high temperature will be overheated. As shown in FIG. 6 (a), a part of the tip tube 5 rises in the neck tube 4 of the CRT 1 and a crack 11 is generated due to a protrusion 10 or thermal strain, which may prevent complete sealing.
【０００６】また一旦停止して装置Indexを再駆動した
場合、アンダー（Under）加熱となり十分な封止ができ
ず、図６（ｂ）に示すように封止部にすじ１２が生じた
り、また真空状態が悪化するスローリークを生じる場合
があった。Further, when the apparatus Index is stopped and then re-driven, the heating becomes under (Under) and sufficient sealing cannot be performed, and streaks 12 are generated in the sealing portion as shown in FIG. 6 (b). There was a case where a slow leak that deteriorates the vacuum state was generated.
【０００７】上記課題を考慮して、本発明は陰極線管製
造における真空排気工程後の封止工程で、マシーントラ
ブル等が発生しても良好な封止を行うことができる陰極
線管の製造方法を提供することを目的とする。In view of the above problems, the present invention provides a method of manufacturing a cathode ray tube capable of performing good sealing even if a machine trouble or the like occurs in the sealing step after the vacuum evacuation step in manufacturing the cathode ray tube. The purpose is to provide.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するた
め、本発明に係る陰極線管の封止方法は陰極線管内を排
気管を介して真空排気した後、前記排気管の所定部を該
排気管の軟化点温度から該軟化点温度＋６０℃までの温
度範囲で加熱溶融し、封止することを特徴とする。In order to solve the above-mentioned problems, a method for sealing a cathode ray tube according to the present invention is to evacuate the inside of the cathode ray tube through an exhaust pipe and then to exhaust a predetermined portion of the exhaust pipe to the exhaust pipe. It is characterized in that it is heated and melted in a temperature range from the softening point temperature of + to 60 ° C. and then sealed.
【０００９】[0009]
【作用】本発明によれば、陰極線管に連通した排気管５
の所定部を、該排気管５の軟化点温度から該軟化点温度
＋６０℃までの温度範囲という従来より低温域で加熱溶
融し封止するため、マシーントラブル等が発生した場合
でも急激な加熱温度の変化がなく、安定した品質の封止
を行うことができる。According to the present invention, the exhaust pipe 5 communicating with the cathode ray tube
In order to seal and melt a predetermined part of the exhaust pipe 5 in a temperature range from the softening point temperature of the exhaust pipe 5 to the softening point temperature + 60 ° C., which is lower than the conventional temperature, a rapid heating temperature even when a machine trouble occurs. It is possible to carry out stable quality sealing without any change.
【００１０】[0010]
【実施例】以下本発明の実施例を図面に基づいて説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は本発明に係る陰極線管のチップ管封
止用加熱条件を示す図である。本実施例では、ＣＲＴ内
部を従来と同様に図５で示したポンプ７，８を用いて真
空排気した後、図１に示した加熱条件に従ってチップ管
５を封止用小型電気炉６を用いて加熱する。FIG. 1 is a diagram showing heating conditions for sealing a tip tube of a cathode ray tube according to the present invention. In the present embodiment, the inside of the CRT is evacuated using the pumps 7 and 8 shown in FIG. 5 as in the conventional case, and then the small electric furnace 6 for sealing the chip tube 5 is used according to the heating conditions shown in FIG. To heat.
【００１２】最大加熱温度をチップ管のガラス材質の軟
化点温度からその上６０℃迄の範囲とし、その最大加熱
温度を約２〜３分間例えば均熱保持する。このようにチ
ップ管５の加熱温度を低めに本実施例による封止では、
チップ管５のガラス粘度と真空応力がバランスして図２
に示すように、良好に封止される。特に、加熱温度を封
止対象ガラスの軟化点温度＋６０℃以内の温度範囲で一
定に保持することにより、ガラス粘度が一定に保持さ
れ、封止部のガラスの盛り上がりと応力が良好にバラン
スする。その状態でチップ管５の封止切りを行う。The maximum heating temperature is set in the range from the softening point temperature of the glass material of the tip tube to 60 ° C., and the maximum heating temperature is maintained for about 2 to 3 minutes, for example, soaking. In this way, when the heating temperature of the tip tube 5 is lowered and the sealing according to this embodiment is performed,
The glass viscosity of the tip tube 5 and the vacuum stress are balanced, and FIG.
As shown in FIG. In particular, by keeping the heating temperature constant within the temperature range of the softening point temperature of the glass to be sealed + 60 ° C., the glass viscosity is kept constant, and the rise and stress of the glass in the sealing portion are well balanced. In this state, the chip tube 5 is cut off.
【００１３】このように、軟化点温度＋６０℃以内の温
度で封止切りを行った後、図１に示すように従来と同様
に加熱温度を徐々に低下させる。この本実施例では従来
より低い温度で封止が行えるため、マシーントラブルが
あって、Index Stopとなった場合でもオーバー加熱とな
らず、しかも再駆動の際にもアンダー（Under）加熱と
ならず良好な陰極線管の封止及び封止切りを行うことが
できた。In this way, after the sealing is cut at a temperature within the softening point temperature + 60 ° C., the heating temperature is gradually lowered as shown in FIG. In this embodiment, since sealing can be performed at a lower temperature than before, even if there is a machine trouble and Index Stop occurs, overheating does not occur, and underheating does not occur during re-driving. It was possible to perform good sealing and cutting of the cathode ray tube.
【００１４】[0014]
【発明の効果】以上説明したように、本発明によれば陰
極線管部内部を真空排気した後、チップ管を従来の温度
より低い所定の温度で加熱しているため、連続作業がマ
シーントラブル等で停止する装置Index Stopの場合ある
いは再駆動においても安定した良好の品質で陰極線管を
封止することができる。As described above, according to the present invention, since the inside of the cathode ray tube is evacuated and the tip tube is heated at a predetermined temperature lower than the conventional temperature, the continuous work causes machine troubles. The cathode ray tube can be sealed with stable and good quality in the case of the device Index Stop which is stopped at or even in the case of re-driving.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明に係る封止加熱条件を示す図である。FIG. 1 is a diagram showing a heating condition for sealing according to the present invention.
【図２】本発明に係る封止状態を示す模式断面図であ
る。FIG. 2 is a schematic cross-sectional view showing a sealed state according to the present invention.
【図３】陰極線管封止装置を説明する模式図である。FIG. 3 is a schematic diagram illustrating a cathode ray tube sealing device.
【図４】排気管電気封止工程説明図である。FIG. 4 is an explanatory diagram of an exhaust pipe electrical sealing process.
【図５】従来の封止加熱条件を示す図である。FIG. 5 is a diagram showing conventional sealing heating conditions.
【図６】従来法による封止の問題を示す断面図である。FIG. 6 is a cross-sectional view showing a problem of sealing by a conventional method.
１ 陰極線管（ＣＲＴ） ２ パネル ３ ファンネル ４ ネック管 ５ チップ管 ６ 封止用小型電気炉 ７ 拡散ポンプ（主ポンプ） ８ メカニカルポンプ（サブポンプ） １１ クラック １２ すじ 1 cathode ray tube (CRT) 2 panel 3 funnel 4 neck tube 5 chip tube 6 small electric furnace for sealing 7 diffusion pump (main pump) 8 mechanical pump (sub pump) 11 crack 12 streaks
Claims (1)
た後、前記排気管の所定部を該排気管の軟化点温度から
該軟化点温度＋６０℃までの温度範囲で加熱溶融し、封
止することを特徴とする陰極線管封止方法。1. A cathode ray tube is vacuum-exhausted through an exhaust pipe, and then a predetermined portion of the exhaust pipe is heated and melted in a temperature range from a softening point temperature of the exhaust pipe to the softening point temperature + 60 ° C. and sealed. A method for sealing a cathode ray tube, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27972093A JPH07134943A (en) | 1993-11-09 | 1993-11-09 | Sealing method of cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27972093A JPH07134943A (en) | 1993-11-09 | 1993-11-09 | Sealing method of cathode-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07134943A true JPH07134943A (en) | 1995-05-23 |
Family
ID=17614942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27972093A Pending JPH07134943A (en) | 1993-11-09 | 1993-11-09 | Sealing method of cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07134943A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004103556A (en) * | 2002-06-12 | 2004-04-02 | Matsushita Electric Ind Co Ltd | Arc tube, method for manufacturing arc tube, and low-pressure mercury lamp |
| JP2009224095A (en) * | 2008-03-14 | 2009-10-01 | Panasonic Corp | Manufacturing method of plasma display panel |
-
1993
- 1993-11-09 JP JP27972093A patent/JPH07134943A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004103556A (en) * | 2002-06-12 | 2004-04-02 | Matsushita Electric Ind Co Ltd | Arc tube, method for manufacturing arc tube, and low-pressure mercury lamp |
| JP2009224095A (en) * | 2008-03-14 | 2009-10-01 | Panasonic Corp | Manufacturing method of plasma display panel |
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