JPH0432131A - Exhausting method for cathode-ray tube - Google Patents
Exhausting method for cathode-ray tubeInfo
- Publication number
- JPH0432131A JPH0432131A JP13380490A JP13380490A JPH0432131A JP H0432131 A JPH0432131 A JP H0432131A JP 13380490 A JP13380490 A JP 13380490A JP 13380490 A JP13380490 A JP 13380490A JP H0432131 A JPH0432131 A JP H0432131A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- gas
- exhaust
- sealing
- panel
- 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
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000009826 distribution Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 20
- 238000001179 sorption measurement Methods 0.000 description 8
- 238000007872 degassing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010943 off-gassing Methods 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
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排気方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a method for evacuation of a cathode ray tube.
排気前の陰極線管は、第５図に示すような構造となって
いる。陰極線管１の管体は、ガラスよりなり、パネル２
ｖｃコーン部３ａとネック部３ｂとからなるファンネル
３が接着されて形成されている。パネル２には、内面に
蛍光体４、アルミ膜５が形成され、また内側にシャドウ
マスク６が装着されている。このシャドウマスク６には
、コーン部３ａの内面に沿って配設されたインナーシー
ルド７が固定されている。またネック部３ｂには電子銃
８が配設され、ネック部３ｂには排気管９が接続されて
いる。The cathode ray tube before exhaust has a structure as shown in FIG. The tube body of the cathode ray tube 1 is made of glass, and the panel 2
A funnel 3 consisting of a VC cone portion 3a and a neck portion 3b is bonded together. A phosphor 4 and an aluminum film 5 are formed on the inner surface of the panel 2, and a shadow mask 6 is attached to the inner surface. An inner shield 7 disposed along the inner surface of the cone portion 3a is fixed to this shadow mask 6. Further, an electron gun 8 is disposed in the neck portion 3b, and an exhaust pipe 9 is connected to the neck portion 3b.
かかる構造よりなる陰極線管１は、第６図に示すような
排気装置で排気される。即ち、陰極線管１は、排気管９
が排気カート１０Ｖｃ設けられた直空装置１１に接続さ
ｎた状態で、図示しな（・搬送手段で排気炉体１２内を
搬送されて排気される。The cathode ray tube 1 having such a structure is evacuated by an exhaust device as shown in FIG. That is, the cathode ray tube 1 has an exhaust pipe 9
is connected to the direct air device 11 provided with the exhaust cart 10Vc, and is transported through the exhaust furnace body 12 by a transport means (not shown) and evacuated.
排気後は、直空装置１１と陰極線管ｌを切り離すために
排気管９を加熱し溶かして封止される。この排気工程及
び排気管封止工程は、第４図に示すような一定の温度ス
ケジュールで加熱、冷却される。第４図において、Ａは
排気時での温度分布範囲を、Ｂは排気管封止後の温度分
布範囲を示す。After exhausting, the exhaust pipe 9 is heated, melted, and sealed to separate the direct air device 11 and the cathode ray tube l. In this exhaust process and exhaust pipe sealing process, heating and cooling are performed according to a fixed temperature schedule as shown in FIG. In FIG. 4, A indicates the temperature distribution range during exhaust, and B indicates the temperature distribution range after the exhaust pipe is sealed.
また１３．１４．１５はそれぞれハネル２、コーン部３
ａ、ネック部３ｂの任意の位置に取付けられた熱電対に
より測定した温度の経時変化を示す。Also, 13, 14, and 15 are respectively Hanel 2 and cone part 3.
a shows the change in temperature over time measured by a thermocouple attached to an arbitrary position of the neck portion 3b.
そこで、陰極線管１の排気は次のようにして行われる。Therefore, the cathode ray tube 1 is evacuated as follows.
陰極線管１は、排気炉体１２内を搬送され、まず常温３
０℃位から徐々に最大４５０℃σ）高温の雰囲気に置か
れ、陰極線管１の内外が加熱される。これにより、陰極
線管１内部の部材（蛍光体４、アルミ膜５、シャドウマ
スク６、インナーシールド７、電子銃８等）に付着した
ガスが脱ガスを起す。この脱ガス及び陰極線管１内の大
気を排気管９に接続された直空装置１１によって徐々に
陰極線管１の外部に放出する。この際、雰囲気を高温の
最大４５０℃から徐々に低温１００’Ｃ位にして陰極線
管１の内外全冷却する。The cathode ray tube 1 is transported inside the exhaust furnace body 12, and is first heated to room temperature 3.
The cathode ray tube 1 is placed in a high temperature atmosphere (from about 0° C. to a maximum of 450° C. σ), and the inside and outside of the cathode ray tube 1 are heated. As a result, gas adhering to the members inside the cathode ray tube 1 (phosphor 4, aluminum film 5, shadow mask 6, inner shield 7, electron gun 8, etc.) is degassed. This degassing and the atmosphere inside the cathode ray tube 1 are gradually discharged to the outside of the cathode ray tube 1 by a direct air device 11 connected to an exhaust pipe 9. At this time, the atmosphere is gradually lowered from a high temperature of 450° C. to a low temperature of about 100° C. to completely cool the inside and outside of the cathode ray tube 1.
なお、この種の排気方法として、例えば特開昭６２−１
３１４４０号公報があげられる。Incidentally, as this type of exhaust method, for example, Japanese Patent Application Laid-Open No. 62-1
Publication No. 31440 is mentioned.
前記したように、排気時には、管内で放出されたガスは
、排気管９を通り排気されるが、排気量に対して放出ガ
ス量が多いため、管内には冷却時も放出ガスが存在する
ことになる。この放出ガスは冷却時に容易に再吸着する
性質があり、この再吸着も実体温度のより低い場所に吸
着する。また排気後の封止時における排気管９の加熱で
発生する悦ガスによっても同様の現象が起る。As mentioned above, during exhaust, the gas released in the pipe is exhausted through the exhaust pipe 9, but since the amount of released gas is large compared to the amount of exhaust, the released gas still exists in the pipe during cooling. become. This released gas has a property of being easily re-adsorbed during cooling, and this re-adsorption is also adsorbed at a location where the actual temperature is lower. A similar phenomenon also occurs due to the pleasure gas generated by heating the exhaust pipe 9 during sealing after exhaust.
上記従来技術は、脱ガスの吸着について配慮がされてお
らず、陰極線管１の排気時の実体温度むらにより発生す
る脱ガスの再吸着及び排気管封止時に発生するガスの吸
着について問題があった。The above-mentioned conventional technology does not take into account the adsorption of degassed gas, and there are problems with re-adsorption of degassed gases that occur due to uneven body temperature when the cathode ray tube 1 is exhausted, and adsorption of gases that occur when the exhaust pipe is sealed. Ta.
即ち、排気工程の冷却時の脱ガスは、温度の一番低い排
気管９またはネック部３ｂに付着する。また排気管９の
封止時では、陰極線管ｌの実体温度はネック部３ｂが一
番低いので、放出ガスはネック部３ｂに付着する。That is, the degassed during cooling during the exhaust process adheres to the exhaust pipe 9 or the neck portion 3b, which has the lowest temperature. Furthermore, when the exhaust pipe 9 is sealed, the actual temperature of the cathode ray tube l is the lowest at the neck portion 3b, so the emitted gas adheres to the neck portion 3b.
このように、ネック部３ｂに付着したガスは、陰極線管
１の動作中に偏向ヨーク等の発熱によりネック部３ｂが
加熱されると管内に放出され、エミッション寿命特性が
低下する。In this manner, the gas adhering to the neck portion 3b is emitted into the tube when the neck portion 3b is heated by heat generated by the deflection yoke or the like during operation of the cathode ray tube 1, and the emission life characteristics are deteriorated.
本発明の目的は、排気管からネック部にかけて脱ガスの
再吸着を防止することができる陰極線管の排気方法を提
供することにある。An object of the present invention is to provide a cathode ray tube exhaust method that can prevent re-adsorption of degassed gas from the exhaust pipe to the neck portion.
上記目的を達成するために、排気工程の冷却時及び／ま
たは封止工程の封止後び）排気管からネック部にかけて
の実体温度金コーン部及びパネルより高い温度にしたも
のである。In order to achieve the above object, the actual temperature from the exhaust pipe to the neck part during cooling in the exhaust process and/or after sealing in the sealing process is set to a higher temperature than the gold cone part and the panel.
排気工程の冷却時及び／または封止後の温度分布は、ネ
ック部が他のパネルやコーン部より高いので、排気時に
陰極線管内部より放出された脱ガスまたは封止時に発生
した脱ガスは、ネック部よりパネル、パネルよりコーン
部に再吸着し易くなる。これにより、動作中に個目ヨー
ク等によりネック部が加熱され、ネック部より放出され
る脱ガスの品質特性への影響が大巾に低減される。The temperature distribution during cooling during the exhaust process and/or after sealing is higher in the neck than in other panels or cone parts, so the outgassing released from inside the cathode ray tube during exhaust or the outgassing generated during sealing is It becomes easier to re-adsorb to the panel than to the neck part, and to the cone part than to the panel. As a result, the neck portion is heated by the individual yoke or the like during operation, and the influence of degassing released from the neck portion on the quality characteristics is greatly reduced.
以下、本発明の一実施例を第１図乃至第３図により説明
する。なお、第４図乃至第６図と同じ部材または部分に
は同一符号を付し、その詳細説明は省略する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Note that the same members or parts as in FIGS. 4 to 6 are denoted by the same reference numerals, and detailed explanation thereof will be omitted.
第１図に示すように、排気炉体１２には、排気管９から
ネック部３ｂに対向し、かつ第３図に示す排気時への冷
却時に対応した部分から併気管封止後Ｂの部分まで加熱
ヒータ１６が取付げらｒている。As shown in FIG. 1, the exhaust furnace body 12 includes a portion B from the exhaust pipe 9 facing the neck portion 3b, and from the portion corresponding to the cooling during exhausting shown in FIG. The heater 16 is installed until the end.
そこで、排気工程の加熱時は、従来と同様に排気炉体１
２で加熱されて直空装置１１により脱ガスの排気が行わ
れる。冷却時及び排気管封止後は、加熱ヒータ１６によ
ってネック部３ｂの温度を第３図に１５′ で示すよ
うにコーン部３ａ及びパネル２の温度１４．１３より高
い温度に加熱して脱ガスの排気及び排気管の封止後の加
熱を行う。Therefore, when heating the exhaust process, the exhaust furnace body 1 is
2 and then degassed by a direct air device 11. During cooling and after sealing the exhaust pipe, the temperature of the neck portion 3b is heated to a temperature higher than the temperature 14.13 of the cone portion 3a and the panel 2 as shown at 15' in FIG. 3 by the heater 16 to degas the gas. Exhaust gas and heat after sealing the exhaust pipe.
このように、排気工程の冷却時及び封止後の温度分布は
、ネック部３ｂがパネル２及びコーン部３ａより高いの
で、排気時に陰極線管１の内部より放出された脱ガスま
たは封止時に発生した脱ガスは、ネック部３ｂよりパネ
ル２、パネル２よりコーン部３ａに再吸着し易くなる。As described above, the temperature distribution during cooling and after sealing in the exhaust process is such that the neck portion 3b is higher than the panel 2 and the cone portion 3a, so that there is no gas released from the inside of the cathode ray tube 1 during exhaust or generated during sealing. The degassed gas is more easily re-adsorbed on the panel 2 than on the neck portion 3b, and more easily on the cone portion 3a than on the panel 2.
これにより、動作中に偏向ヨーク等によりネック部３ｂ
が加熱され、ネック部３ｂより放出される脱ガスの品質
特性への影響が大巾に低減される。ところで、本実施例
の場合にはコーン部３ａへの再吸着が増大するが、これ
は次工程で実施するゲッタ材の飛散疋より対応すること
ができ問題はな（・。As a result, during operation, the neck portion 3b is
is heated, and the influence of degassing released from the neck portion 3b on quality characteristics is greatly reduced. Incidentally, in the case of this embodiment, the re-adsorption to the cone portion 3a increases, but this can be countered by scattering the getter material in the next step, so there is no problem.
第２図は本発明の他の実施例を示す。前記実施例におい
ては、加熱ヒータ１６を排気炉体１２に取付けたが、本
実施例は加熱ヒータ１６を排気カート１０に取付けてな
る。そして、温度スケ−ジュールは、前記実施例と同様
に、第３図に示すよう温度スケ−ジュールに従って行う
。このようにしても前記実施例と同等の効果が得られる
。FIG. 2 shows another embodiment of the invention. In the embodiment described above, the heater 16 was attached to the exhaust furnace body 12, but in this embodiment, the heater 16 is attached to the exhaust cart 10. The temperature schedule is carried out in accordance with the temperature schedule shown in FIG. 3, as in the previous embodiment. Even in this case, the same effect as in the above embodiment can be obtained.
なお、上記実施例においては、排気時及び排気管封止後
の両方に適用した場合について説明したが、排気時のみ
又は排気管封止後のみでも従来より効果がある。また第
３図においては、排気工程Ａの加熱時のネック部３ｂの
温度はパネル２及びコーン部３ａより低（したが、加熱
時の温度は脱ガスの再吸着に対して問題はないので、ネ
ック部３ｂの温度をパネル２及びコーン部３ａより高く
してもよい。また上記実施例においては、加熱ヒータ１
６は排気炉体１２または排気カー）１０に取付けたが、
排気管封止後では排気カート１１０近くに設置してもよ
い。In the above embodiment, a case has been described in which the present invention is applied both during exhaust gas and after sealing the exhaust pipe, but it is more effective than before even when applied only during exhaust gas or only after sealing the exhaust pipe. In addition, in FIG. 3, the temperature of the neck part 3b during heating in the exhaust process A is lower than that of the panel 2 and the cone part 3a (however, the temperature during heating does not pose a problem for re-adsorption of degassed gas, so The temperature of the neck portion 3b may be higher than that of the panel 2 and the cone portion 3a.Furthermore, in the above embodiment, the temperature of the heater 1
6 was attached to the exhaust furnace body 12 or exhaust car) 10,
After the exhaust pipe is sealed, it may be installed near the exhaust cart 110.
本発明によれば、排気管からネック部にかけて脱ガスの
再吸着を防止することかでき、動作中のエミッション寿
命特性が改善される。According to the present invention, it is possible to prevent re-adsorption of degassed gas from the exhaust pipe to the neck portion, and the emission life characteristics during operation are improved.
第１図は本発明の方法に用いる装置の一実施例を示す正
面図、第２図は本発明の方法に用いる装置の他の実施例
を示す正面図、第３図は本発明の一実施例を示す温度ス
ケジュール図、第４図は従来例の温度スケジュール図、
第５図は陰極線管の断面図、第６図は従来の方法に用い
る装置の正面図である。
１・・・陰極線管、 ２・・・パネル、 ３・
・・ファンネル、 ３ａ・・・コーンｉ、 ３
ｂ・・・ネック部、９・・・排気管、 １０・−・
排気カート、１１・・・真空装置、 １２・・・排
気炉体、１３・・・パネルの温度、 １４・・・コ
ーン部の温度、１５°・・・ネック部の温度、 １６
・・・加熱ヒータ、Ａ・・・排気時での温度分布範囲、
Ｂ・・・排気管封止後の温度分布範囲。
第１図
第３図
→時間
第２図
第４図
→峙門FIG. 1 is a front view showing one embodiment of the apparatus used in the method of the present invention, FIG. 2 is a front view showing another embodiment of the apparatus used in the method of the present invention, and FIG. 3 is a front view showing an embodiment of the apparatus used in the method of the present invention. A temperature schedule diagram showing an example, FIG. 4 is a temperature schedule diagram of a conventional example,
FIG. 5 is a sectional view of a cathode ray tube, and FIG. 6 is a front view of an apparatus used in the conventional method. 1...Cathode ray tube, 2...Panel, 3.
...Funnel, 3a...Cone i, 3
b...Neck part, 9...Exhaust pipe, 10...
Exhaust cart, 11... Vacuum device, 12... Exhaust furnace body, 13... Panel temperature, 14... Cone temperature, 15°... Neck temperature, 16
...heater, A...temperature distribution range during exhaust,
B...Temperature distribution range after exhaust pipe sealing. Figure 1 Figure 3 → Time Figure 2 Figure 4 → Chimon Gate
Claims (1)
程において、排気工程の冷却時及び／または封止工程の
封止後の排気管からネック部にかけての実体温度をコー
ン部及びパネルより高い温度にすることを特徴とする陰
極線管の排気方法。1. During the exhaust process of the cathode ray tube or the sealing process of the exhaust pipe after exhaust, the actual temperature from the exhaust pipe to the neck part is measured from the cone part and panel during the cooling process of the exhaust process and/or after the sealing process of the sealing process. A cathode ray tube exhaust method characterized by raising the temperature to a high temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13380490A JPH0432131A (en) | 1990-05-25 | 1990-05-25 | Exhausting method for cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13380490A JPH0432131A (en) | 1990-05-25 | 1990-05-25 | Exhausting method for cathode-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0432131A true JPH0432131A (en) | 1992-02-04 |
Family
ID=15113425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13380490A Pending JPH0432131A (en) | 1990-05-25 | 1990-05-25 | Exhausting method for cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0432131A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980060787A (en) * | 1996-12-31 | 1998-10-07 | 손욱 | Cathode Ray Tube Manufacturing Method |
| US6042441A (en) * | 1997-04-03 | 2000-03-28 | Nec Corporation | Method of cleaning the cathode of a cathode ray tube and a method for producing a vacuum in a cathode ray tube |
-
1990
- 1990-05-25 JP JP13380490A patent/JPH0432131A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980060787A (en) * | 1996-12-31 | 1998-10-07 | 손욱 | Cathode Ray Tube Manufacturing Method |
| US6042441A (en) * | 1997-04-03 | 2000-03-28 | Nec Corporation | Method of cleaning the cathode of a cathode ray tube and a method for producing a vacuum in a cathode ray tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4323573B2 (en) | Manufacturing method of flat panel display device | |
| JPH0343937A (en) | Manufacture of image tube | |
| JPH0432131A (en) | Exhausting method for cathode-ray tube | |
| US5145437A (en) | Faceplate stress-relief in tension mask color cathode ray tube manufacture | |
| JPS5916694B2 (en) | Cathode ray tube manufacturing method | |
| US2807517A (en) | Method of manufacturing pickup tubes | |
| US5160287A (en) | Color picture tube manufacturing method | |
| JP3189409B2 (en) | Flat display and manufacturing method thereof | |
| JPH07134942A (en) | Manufacture of cathode-ray tube | |
| JPH06215696A (en) | Manufacture of cathode-ray tube | |
| JPS62154524A (en) | Manufacture of color cathode-ray tube | |
| JPS6113343B2 (en) | ||
| JPS625533A (en) | Manufacture of cathode-ray tube | |
| JPH024093B2 (en) | ||
| JPH1196941A (en) | Glass bulb for cathode-ray tube | |
| JPH06203755A (en) | Manufacture of cathode-ray tube | |
| KR100209612B1 (en) | Getter cover for cathode ray tube | |
| JPH0714513A (en) | Manufacture of cathode-ray tube | |
| JPH04104429A (en) | Manufacture of cathode ray tube | |
| JPH0393132A (en) | Manufacture of color cathode ray tube | |
| JPH0714515A (en) | Manufacture of frit seal type small x-ray tube made of lead glass | |
| JPH10326565A (en) | Surface treatment device for cathode-ray tube | |
| JPH0430137B2 (en) | ||
| JP2001189140A (en) | Explosion proof construction of flat surface cathode ray tube | |
| JPS61135023A (en) | Method for exhaust of cathode-ray tube and device for practicing it |