JP2588526B2 - Manufacturing method of cathode ray tube - Google Patents
Manufacturing method of cathode ray tubeInfo
- Publication number
- JP2588526B2 JP2588526B2 JP62080910A JP8091087A JP2588526B2 JP 2588526 B2 JP2588526 B2 JP 2588526B2 JP 62080910 A JP62080910 A JP 62080910A JP 8091087 A JP8091087 A JP 8091087A JP 2588526 B2 JP2588526 B2 JP 2588526B2
- Authority
- JP
- Japan
- Prior art keywords
- ray tube
- cathode ray
- cathode
- state
- getter
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は陰極線管の製造方法に係り、特に排気工程の
排気完了後にゲツターフラツシユを行い、その後エージ
ング工程を行う陰極線管の製造方法に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a cathode ray tube, and more particularly to a method for manufacturing a cathode ray tube in which a getter flash is performed after exhaustion in an exhaustion step is completed, and then an aging step is performed. .
陰極線管の製造工程において、排気完了後にゲツター
フラツシユを行つた場合、管内のガス成分は炭化水素
（CmHn）を主体とするものとなつている。このため、次
工程のエージング中に陰極より放出される電子が前記炭
化水素系のガス粒子に衝突し、炭化イオン（C++）が生
じ、この炭化イオンが陰極表面に付着して熱電子放出能
力を低下させる。In the manufacturing process of the cathode ray tube, when a getter flash is performed after the exhaust is completed, the gas component in the tube is mainly composed of hydrocarbon (CmHn). For this reason, the electrons emitted from the cathode during the aging in the next step collide with the hydrocarbon gas particles to generate carbon ions (C ++ ), which adhere to the surface of the cathode and emit thermionic electrons. Decreases ability.
従来、かかる問題を解消するものとして、例えば特開
昭61−58140号公報に記載のように、エージング工程時
にネツク部より偏向磁界を与えて、ガス粒子を偏向しな
がら陰極の活性化を行うことにより、炭化物の陰極表面
への付着を防止することが知られている。Conventionally, to solve such a problem, for example, as described in JP-A-61-58140, a cathode is activated while deflecting gas particles by applying a deflecting magnetic field from a neck portion during an aging step. Is known to prevent carbide from adhering to the cathode surface.
排気完了後のゲツターフラツシユにより管内に生じた
炭化水素系のガス粒子は、ゲツター膜（Ba膜）に非常に
吸着されにくい。Hydrocarbon-based gas particles generated in the tube by the getter flush after the evacuation is very unlikely to be adsorbed on the getter film (Ba film).
上記従来技術は、エージング工程において、ゲツター
膜に吸着されにくいガス粒子が多量に存在することによ
り、エージング工程で陰極より放出された電子がガス粒
子に多量に衝突する。このため、エージング工程でガス
粒子がイオン化され、炭化されたイオンの陰極表面への
付着を防止するという効果が充分に得られないという問
題があつた。In the above-mentioned conventional technology, in the aging step, a large amount of gas particles which are hardly adsorbed to the getter film exist, so that a large amount of electrons emitted from the cathode in the aging step collide with the gas particles. Therefore, the gas particles are ionized in the aging step, and there is a problem that the effect of preventing the carbonized ions from adhering to the cathode surface cannot be sufficiently obtained.
特に、陰極線管の大きさがゲツターのバリウム充填量
に対して小さい場合とか、最近各社で使用され始めたフ
リツタブルゲツター球については、前記した問題が顕著
である。In particular, when the size of the cathode ray tube is smaller than the barium filling amount of the getter, or the flittable getter sphere recently used by various companies, the above-mentioned problem is remarkable.
本発明の目的は、炭化されたイオンの陰極表面への付
着をより効果的に防止することができる陰極線管の製造
方法を提供することにある。An object of the present invention is to provide a method for manufacturing a cathode ray tube, which can more effectively prevent carbonized ions from adhering to the cathode surface.
上記目的は、ゲッターフラッシュとエージング工程間
に、蛍光体の光らない円形の領域が蛍光体スクリーン中
央部に形成されるラスターパターンを一定時間を画かせ
ることにより達成される。The above object can be achieved by providing a raster pattern in which a circular region where the phosphor does not emit light is formed at the center of the phosphor screen for a certain period of time between the getter flash and the aging process.
ゲツターフラツシユにより管内に生じた炭化水素系の
ガス粒子は、ヒータの加熱温度によりゲツター膜に吸着
されやすい２酸化炭素（CO2）と水分（H2O）に変化し、
どんどんゲツター膜に吸着され、管内の真空度が良くな
る。Hydrocarbon gas particles generated in the tube by the getter flash change into carbon dioxide (CO 2 ) and water (H 2 O) which are easily adsorbed on the getter film by the heating temperature of the heater,
It is adsorbed more and more by the getter film, and the degree of vacuum in the tube improves.
この真空度が良くなつた状態、即ち炭化水素系のガス
粒子が少ない状態でエージングを行うので、炭化イオン
の量が少なくなり、陰極表面への炭化イオンの付着がよ
り効果的に防止される。さらに、蛍光体の光らない円形
の領域が蛍光体スクリーン中央部に形成される様ラスタ
ーパターンを画かせているので、炭素イオンが陰極に直
撃するのを効果的に防止出来る。これにより、エミツシ
ヨン特性の劣化を防止できる。Since aging is performed in a state in which the degree of vacuum is improved, that is, in a state in which the amount of hydrocarbon gas particles is small, the amount of carbide ions is reduced, and the attachment of carbide ions to the cathode surface is more effectively prevented. Further, since a raster pattern is formed so that a circular area where the phosphor does not shine is formed at the center of the phosphor screen, it is possible to effectively prevent carbon ions from directly hitting the cathode. Thereby, deterioration of the emission characteristics can be prevented.
以下、本発明の動作原理を第１図及び第２図により説
明する。第１図は陰極線管のエージング状態を示し、１
はヒータ、２は陰極、３、４、５、６はそれぞれ第１、
第２、第３、第４グリツド、７は陰極線管である。ゲツ
ターフラツシユ後の陰極線管７内には、ゲツター膜に吸
着されにくい炭化水素（CmHn）系のガス粒子８が残留ガ
スの大半を占めている。また陰極線管７内の真空度は、
第２図に示すように、排気完了後はＡ状態にあつたもの
が、ゲツターフラツシユ後はＢの状態に悪くなつてい
る。Hereinafter, the operation principle of the present invention will be described with reference to FIG. 1 and FIG. FIG. 1 shows the aging state of the cathode ray tube,
Is a heater, 2 is a cathode, 3, 4, 5, and 6 are first, respectively.
The second, third and fourth grids 7 are cathode ray tubes. In the cathode ray tube 7 after the getter flash, hydrocarbon (CmHn) -based gas particles 8 hardly adsorbed on the getter film occupy most of the residual gas. The degree of vacuum in the cathode ray tube 7 is
As shown in FIG. 2, the state in the state A after the exhaust is completed is deteriorated to the state in the state B after the getter flash.
そこで、ゲツターフラツシユ後、ヒータ１の点火だけ
を行う（他の電極には印加しない）と、ヒータ１の加熱
温度により炭化水素系のガス粒子８はゲツター膜に吸着
されやすい二酸化炭素（CO2）と水分（H2O）に変化し、
どんどんゲツター膜に吸着される。このため、陰極線管
７内の真空度は、第２図に示すようにヒータ１の点火時
間に対応して良くなる。即ち、ヒータ１だけの点火時間
をTBCとすると、陰極線管７内の真空度は、ゲツターフ
ラツシユ後にＢの状態にあつたものが、ヒータ１の点火
時間TBC後にはＣの状態となる。Then, after the getter flash, if only the heater 1 is ignited (not applied to the other electrodes), the hydrocarbon-based gas particles 8 are easily adsorbed on the getter film due to the heating temperature of the heater 1. 2 ) and moisture (H 2 O)
It is adsorbed more and more by the getter film. For this reason, the degree of vacuum in the cathode ray tube 7 is improved corresponding to the ignition time of the heater 1 as shown in FIG. That is, when the ignition time of only the heater 1 and T BC, the degree of vacuum in the cathode ray tube 7, as been filed to the state B after Getsu turf Raţ Shiyu is, after the ignition time T BC heater 1 and the state of C Become.
前記ヒータ１だけの点火時間TBCは、陰極線管７及び
ゲツターの大きさ、ヒータ１のパワーにより変るが、数
分〜数10分が適正である。また別の観点からすれば、真
空度Ｃが10-5〜10-6Torrオーダ以下になるまでヒータ１
を点火することになる。The ignition time T BC of only the heater 1 varies depending on the size of the cathode ray tube 7 and the getter and the power of the heater 1, but several minutes to several tens minutes is appropriate. From another point of view, the heater 1 is used until the degree of vacuum C becomes 10-5 to 10-6 Torr or less.
Will ignite.
次に前記のように真空度が良くなつた状態Ｃ、即ちガ
ス粒子８が少なくなつた状態でエージングを行う。この
エージングは、ヒータ１に通電して陰極２の陰極物質を
加熱し、更に第１、第２グリツド３、４に正電位を印加
して行う。また必要に応じて第３、第４グリツド５、６
にも正電位を印加する。なお、第１図において、９は電
子ビームを示す。Next, aging is performed in the state C in which the degree of vacuum is improved as described above, that is, in the state in which the gas particles 8 are reduced. This aging is performed by applying a current to the heater 1 to heat the cathode material of the cathode 2 and applying a positive potential to the first and second grids 3 and 4. If necessary, the third and fourth grids 5, 6
A positive potential is also applied. In FIG. 1, reference numeral 9 denotes an electron beam.
このように、真空度が良くなつた状態Ｃ、即ちガス粒
子８が少なくなつた状態でエージングを行うので、炭化
イオンの量が少なくなり、陰極２の表面への炭化イオン
の付着がより効果的に防止され、エミツシヨン特性の劣
化を防止できる。As described above, aging is performed in a state C with a good degree of vacuum, that is, a state in which the number of gas particles 8 is small, so that the amount of carbide ions is reduced, and the attachment of carbide ions to the surface of the cathode 2 is more effective. And the deterioration of the emission characteristics can be prevented.
第３図及び第４図は本発明の一実施例を示す。ゲツタ
ーフラツシユ後、第３図（ａ）に示すように、数分〜数
10分間、陰極線管７のパネル全面にラスターパターン10
aを出してやる。ラスターパターンとは、陰極線管７の
実装状態でパネルの螢光面を光らせた状態をいう。3 and 4 show an embodiment of the present invention. After the getter flash, as shown in FIG.
Raster pattern 10 on the entire surface of the cathode ray tube 7 for 10 minutes
I'll give you a. The raster pattern refers to a state in which the fluorescent screen of the panel is illuminated while the cathode ray tube 7 is mounted.
このように全面にラスターパターン10aを出してやる
と、第４図（ａ）に示すように、一部の電子ビーム9aは
直進状態の軌道をとるが、同図（ｂ）に示すように、殆
んどの電子ビーム9bは偏向状態の軌道をとり、炭化水素
系のガス粒子８は、電子ビーム9a、9bにより分解されて
イオン化され、そのイオンは他のイオンと反応してゲツ
ター膜に吸収され易い二酸化炭素（CO2）と水（H2O）に
変化し、ゲツター膜に吸着され、短時間に管内の真空度
が良くなる。この場合、第４図（ａ）のように電子ビー
ム9aが直進し、その時に分解された炭素イオン（C++）
は陰極２を直撃する軌道11aをとるので、一部直撃によ
る劣化があるが、同図（ｂ）に示すように殆んどの電子
ビーム9bは偏向されているので、炭素イオン（C++）は
軌道11bをとり、陰極２を直撃することがない。When the raster pattern 10a is projected on the entire surface in this way, as shown in FIG. 4 (a), a part of the electron beam 9a takes a straight trajectory, but as shown in FIG. Most of the electron beam 9b orbits in a deflected state, and the hydrocarbon gas particles 8 are decomposed and ionized by the electron beams 9a and 9b, and the ions react with other ions and are easily absorbed by the getter film. It changes to carbon dioxide (CO 2 ) and water (H 2 O) and is adsorbed on the getter membrane, which improves the degree of vacuum in the tube in a short time. In this case, as shown in FIG. 4 (a), the electron beam 9a goes straight, and carbon ions (C ++ ) decomposed at that time.
Takes a trajectory 11a which hits the cathode 2 directly, there is some deterioration due to the direct hit, but as shown in FIG. 3 (b), most of the electron beam 9b is deflected, so that carbon ions (C ++ ) Takes the orbit 11b and does not hit the cathode 2 directly.
この炭素イオンの陰極２への直撃を防止するには、第
３図（ｂ）に示すように、電子ビームが直進する部分の
螢光体を光らさないようなラスターパターン10bを画か
せてやることにより、第４図（ａ）の状態はなくなり、
全て第４図（ｂ）の状態となるので、炭素イオンが陰極
２に直撃するのを非常に少なくできる。In order to prevent the carbon ions from directly hitting the cathode 2, a raster pattern 10b is formed so as not to illuminate the phosphor in the portion where the electron beam goes straight, as shown in FIG. 3 (b). As a result, the state shown in FIG.
Since all the states are as shown in FIG. 4 (b), it is possible to greatly reduce the possibility that carbon ions directly hit the cathode 2.
前記のようにラスターパターン10a、10bを出してやる
と、ガス粒子８が電子ビーム9a、9bによつて分解される
と共に、前記動作原理で説明したヒータ１の加熱による
効果も作用するので、より短時間で真空度が良くなる。When the raster patterns 10a and 10b are emitted as described above, the gas particles 8 are decomposed by the electron beams 9a and 9b, and the effect of the heating of the heater 1 described in the above operating principle also acts. The degree of vacuum improves with time.
このように真空度が良くなつた状態で、前記実施例で
説明したようにエージングを行う。As described above, aging is performed in a state where the degree of vacuum is improved.
本発明によれば、エージング時の管内真空度が良い状
態、いいかえれば、炭化水素系のガス粒子が少ない状態
でエージングを行うので、電子ビームによりイオン化さ
れる炭素イオン量が少なくなり、陰極表面への炭素イオ
ンの付着がより効果的に防止され、エミツシヨン特性の
劣化を防止できる。According to the present invention, aging is performed in a state where the degree of vacuum in the tube at the time of aging is good, in other words, in a state where the hydrocarbon gas particles are small, the amount of carbon ions ionized by the electron beam is reduced, and Is more effectively prevented from adhering, and deterioration of the emission characteristics can be prevented.
【図面の簡単な説明】 第１図は陰極線管のエージング状態を示す断面説明図、
第２図は本発明の動作原理を説明する、ヒータ点火によ
る管内真空度変化図、第３図（ａ），（ｂ）は本発明の
一実施例を示すラスターパターン図、第４図（ａ），
（ｂ）は第３図（ａ）の場合における電子ビームと炭素
イオンの軌道図である。 １……ヒータ、２……陰極、 ３〜６……第１〜第４グリツド、７……陰極線管、 10a、10b……ラスターパターン。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory sectional view showing an aging state of a cathode ray tube;
FIG. 2 is a diagram for explaining the operation principle of the present invention. FIG. 3 (a) and (b) are raster pattern diagrams showing one embodiment of the present invention, and FIG. 4 (a). ),
(B) is a trajectory diagram of the electron beam and carbon ions in the case of FIG. 3 (a). 1 ... heater, 2 ... cathode, 3-6 ... 1st-4th grid, 7 ... cathode ray tube, 10a, 10b ... raster pattern.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 東 隆雄 茂原市早野3300番地 株式会社日立製作 所茂原工場内 (56)参考文献 特開 昭56−161787（ＪＰ，Ａ) 特開 昭58−152345（ＪＰ，Ａ) 特開 昭60−232635（ＪＰ，Ａ) 特開 昭61−58140（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Takao Higashi 3300 Hayano, Mobara-shi, Hitachi, Ltd. Mobara Plant, Hitachi, Ltd. (56) References JP-A-56-161787 (JP, A) JP-A-58-152345 ( JP, A) JP-A-60-232635 (JP, A) JP-A-61-58140 (JP, A)
Claims (1)
ーフラッシュを行い、その後エージング工程を行う陰極
線管の製造方法において、 前記ゲッターフラッシュと前記エージング工程間に、蛍
光体の光らない円形の領域が蛍光体スクリーン中央部に
形成されるラスターパターンを一定時間を画かせること
を特徴とする陰極線間の製造方法。1. A method of manufacturing a cathode ray tube in which a getter flash is performed after exhausting in a cathode ray tube exhausting step and then an aging step is performed, wherein a circular area where phosphor is not illuminated between the getter flash and the aging step. A method for manufacturing between cathode lines, wherein a raster pattern formed in the center of the phosphor screen is drawn for a certain period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62080910A JP2588526B2 (en) | 1987-04-03 | 1987-04-03 | Manufacturing method of cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62080910A JP2588526B2 (en) | 1987-04-03 | 1987-04-03 | Manufacturing method of cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63248034A JPS63248034A (en) | 1988-10-14 |
| JP2588526B2 true JP2588526B2 (en) | 1997-03-05 |
Family
ID=13731541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62080910A Expired - Fee Related JP2588526B2 (en) | 1987-04-03 | 1987-04-03 | Manufacturing method of cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2588526B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001035367A (en) | 1999-07-21 | 2001-02-09 | Mitsubishi Electric Corp | Manufacture of cathode-ray tube and cathode-ray tube manufacturing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56161787A (en) * | 1980-05-16 | 1981-12-12 | Hitachi Ltd | Manufacture for cathode ray tube |
| JPS60232635A (en) * | 1984-05-04 | 1985-11-19 | Toshiba Corp | Manufacture of cathode-ray tube |
| JPS6158140A (en) * | 1984-08-30 | 1986-03-25 | Toshiba Corp | Manufacture of cathode-ray tube |
-
1987
- 1987-04-03 JP JP62080910A patent/JP2588526B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63248034A (en) | 1988-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3423511B2 (en) | Image forming apparatus and getter material activation method | |
| US5866978A (en) | Matrix getter for residual gas in vacuum sealed panels | |
| JP2629521B2 (en) | Electron gun and cathode ray tube | |
| US4457731A (en) | Cathode ray tube processing | |
| JP2588526B2 (en) | Manufacturing method of cathode ray tube | |
| JPH1167111A (en) | Electrode voltage impressing method and device for cold cathode mounted electron tube | |
| US3552818A (en) | Method for processing a cathode ray tube having improved life | |
| US3432712A (en) | Cathode ray tube having a perforated electrode for releasing a selected gas sorbed therein | |
| JP2761404B2 (en) | Fluorescent display tube | |
| GB2076216A (en) | Method of fabricating cathode-ray tube | |
| JP3106014B2 (en) | Light source with electron beam source | |
| JP3135460B2 (en) | Aging method of cathode ray tube | |
| JPS6044777B2 (en) | Aging method of electron tube | |
| JP3184416B2 (en) | Manufacturing method of cathode ray tube | |
| JP2000082416A (en) | Phosphor screen and its formation method | |
| JP3130530B2 (en) | Manufacturing method of cathode ray tube | |
| JP2000306511A (en) | Cathode-ray tube fabricating method | |
| JPS5827473Y2 (en) | color picture tube | |
| JPS6158140A (en) | Manufacture of cathode-ray tube | |
| JPH1064429A (en) | Manufacture of image display device | |
| KR930001212Y1 (en) | Electron gun of color picture tube | |
| JP3030456B2 (en) | Getter for cathode ray tube | |
| JP2004146074A (en) | Electron beam excited light emitting device | |
| KR19980034242A (en) | Manufacturing Method of Cathode Ray Tube Using Impregnated Cathode | |
| JPS5851443A (en) | Method of exhausting cathode-ray tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |