JPH0566704B2 - - Google Patents
Info
- Publication number
- JPH0566704B2 JPH0566704B2 JP58155932A JP15593283A JPH0566704B2 JP H0566704 B2 JPH0566704 B2 JP H0566704B2 JP 58155932 A JP58155932 A JP 58155932A JP 15593283 A JP15593283 A JP 15593283A JP H0566704 B2 JPH0566704 B2 JP H0566704B2
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- aging
- temperature
- ray tube
- present
- 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 - Lifetime
Links
- 230000032683 aging Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000002431 foraging effect Effects 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 claims 1
- 239000012857 radioactive material Substances 0.000 claims 1
- 238000001994 activation Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007725 thermal activation 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
- H01J9/44—Factory adjustment of completed discharge tubes or lamps to comply with desired tolerances
- H01J9/445—Aging of tubes or lamps, e.g. by "spot knocking"
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〕
本発明はカラー陰極線管（通称Ｃ−CRT）の
製造方法に係り、特にそのカソードエージング方
法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for manufacturing a color cathode ray tube (commonly known as a C-CRT), and particularly to a method for aging its cathode.
Ｃ−CRTの製造に於て、電極部品の組立て、
外囲器への封入、排気、デツタフラツシユを経て
封止後Ｃ−CRTとして要求されるエミツシヨン
特性を得る為にカソードエージングが行なわれ
る。一般にカソードエージングには充分なエミツ
シヨン（電子放射）を生成する為にカソードのエ
ミツタ（電子放性生物質）温度を上げて行う熱活
性と、エミツタから電流を取り出して行う電流活
性の２種類の活性法があり、従来からこれらが適
宜に組合わされて行なわれてきた。
In manufacturing C-CRT, assembly of electrode parts,
After being sealed in an envelope, evacuated, and detaflashed, cathode aging is performed to obtain the emission characteristics required for a C-CRT. In general, cathode aging involves two types of activation: thermal activation, which is performed by increasing the temperature of the cathode's emitter (electron-emitting material), and current activation, which is performed by extracting current from the emitter, in order to generate sufficient emission (electron radiation). There are various laws and regulations, and these have traditionally been practiced in appropriate combinations.
熱活性のエミツタ温度はエミツシヨン源である
Baの生成を短時間で効率的に得る為にフイラメ
ント電圧を調整し通常使用時の温度（1050〜110
〓）よりも高く設定しているが、高くしすぎると
Baの蒸発が激しく、逆に消耗の方が大きくなり
好ましくない等の理由からその温度は1200〜1350
〓以内の範囲に限られていた。
Thermally activated emitter temperature is the source of emitters
In order to efficiently generate Ba in a short time, the filament voltage is adjusted and the temperature during normal use (1050 to 110
〓) is set higher than 〓), but if it is set too high
The temperature is set at 1200-1350 for reasons such as rapid evaporation of Ba and conversely greater consumption, which is undesirable.
It was limited to a range within 〓.
本発明はカソードエージングを効果的に行う方
法を提供することを目的とする。
An object of the present invention is to provide a method for effectively aging a cathode.
本発明は種々考察の結果、Ba単結晶中のBaの
拡散に電荷（Ba室孔）の移動を伴うものと伴わ
ないものの２種類があり、1350〓以上の高温では
じめて電化の移動に伴う拡散が加わつて拡散係数
の大幅な増大が得られることがわかつた。
As a result of various considerations, the present invention found that there are two types of Ba diffusion in Ba single crystals: one accompanied by the movement of charge (Ba chamber pore) and one not accompanied by the movement of charge (Ba chamber pores). It was found that a significant increase in the diffusion coefficient can be obtained by adding .
しかも、いつたん上記1350〓以上の高温による
フラツシングを経験したものは経験しないものに
比べてその後は1350〓以下の温度に於ても数桁違
いの大きい拡散係数が得られることがわかつた。 Furthermore, it was found that those who had experienced flashing due to high temperatures of 1350° or higher were able to obtain diffusion coefficients that were several orders of magnitude higher than those who had not experienced flashing, even at temperatures below 1350°.
本発明は以上に基づいてなされたものであり、
上記高温に於けるBaの蒸発、またそれによる耐
電圧特性の劣化等の被害との兼ね合いにより1350
〓以上の高温に保つ時間を２〜５分とし、そのフ
ラツシング温度を1350〓以上、好ましくは1400〓
に設定できたものである。 The present invention has been made based on the above,
Due to the evaporation of Ba at the above-mentioned high temperatures and the resulting deterioration of withstand voltage characteristics, the
Keep the temperature at a high temperature of 2 to 5 minutes, and set the flashing temperature to 1350 or higher, preferably 1400.
This can be set to .
〔発明の実施例〕
第１図は本発明の一実施例におけるカソードエ
ージング条件を示したものであり、実線ａがその
実施例のもの、破線ｂは比較の為に示した従来例
のものである。第２図は上記２種の条件（他の条
件は全て同一）にて製作した試作品のライフテス
ト結果を示し、実線が実施例、破線が従来例のそ
れぞれライフ中の相対値（％）を示したものであ
り実施例のものが良く活性されていることが分か
る。[Embodiment of the Invention] Figure 1 shows the cathode aging conditions in an embodiment of the present invention, where the solid line a is for that embodiment and the broken line b is for the conventional example shown for comparison. be. Figure 2 shows the life test results of prototypes manufactured under the above two conditions (all other conditions being the same), where the solid line shows the relative value (%) during the life of the example and the broken line shows the conventional example. It can be seen that the one shown in Example is highly active.
以上のように本発明によれば良好なカソード活
性化が得られライフ中に良好なエミツヨンを維持
でき長時間に亘り安定な特性が得られる効果があ
る。
As described above, according to the present invention, good cathode activation can be obtained, good emission can be maintained during life, and stable characteristics can be obtained over a long period of time.
第１図はカソードエージング条件を示す図、第
２図はライフテスト結果を示す図である。
ａ：実施例、ｂ：従来例。
FIG. 1 is a diagram showing cathode aging conditions, and FIG. 2 is a diagram showing life test results. a: Example, b: Conventional example.
Claims (1)
るカラー陰極線管の製造工程中の中の一段階であ
るエージング工程において、その初期に２〜５分
間特別の高温状態を与えるために行われるフラツ
シング工程におけるカソード温度を1350°K以上、
好ましくは1400°Kとすることを特徴とするカラ
ー陰極線管のカソードエージング方法。1 In the aging process, which is one of the steps in the manufacturing process of a color cathode ray tube having a cathode coated with an electron radioactive material, the cathode is used in the flushing process, which is carried out to apply a special high temperature condition for 2 to 5 minutes at the beginning of the aging process. temperature above 1350°K,
A method for aging a cathode of a color cathode ray tube, preferably at 1400°K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15593283A JPS6047337A (en) | 1983-08-26 | 1983-08-26 | Cathode aging method for color cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15593283A JPS6047337A (en) | 1983-08-26 | 1983-08-26 | Cathode aging method for color cathode-ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6047337A JPS6047337A (en) | 1985-03-14 |
| JPH0566704B2 true JPH0566704B2 (en) | 1993-09-22 |
Family
ID=15616660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15593283A Granted JPS6047337A (en) | 1983-08-26 | 1983-08-26 | Cathode aging method for color cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6047337A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04134038U (en) * | 1991-06-04 | 1992-12-14 | 愛知機械工業株式会社 | water temperature display system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57199144A (en) * | 1981-06-01 | 1982-12-07 | Mitsubishi Electric Corp | Activation of cathode-ray tube |
| JPS58145039A (en) * | 1981-12-24 | 1983-08-29 | ノキア グラエツ ゲゼルシャフト ミット ベシュレンクテル ハフツンク | Method of stabilizing hot-cathode |
-
1983
- 1983-08-26 JP JP15593283A patent/JPS6047337A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57199144A (en) * | 1981-06-01 | 1982-12-07 | Mitsubishi Electric Corp | Activation of cathode-ray tube |
| JPS58145039A (en) * | 1981-12-24 | 1983-08-29 | ノキア グラエツ ゲゼルシャフト ミット ベシュレンクテル ハフツンク | Method of stabilizing hot-cathode |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6047337A (en) | 1985-03-14 |
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