JPH0437532B2 - - Google Patents
Info
- Publication number
- JPH0437532B2 JPH0437532B2 JP56125208A JP12520881A JPH0437532B2 JP H0437532 B2 JPH0437532 B2 JP H0437532B2 JP 56125208 A JP56125208 A JP 56125208A JP 12520881 A JP12520881 A JP 12520881A JP H0437532 B2 JPH0437532 B2 JP H0437532B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- glass substrate
- jig
- holding
- carbon
- 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
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
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Description
【発明の詳細な説明】
本発明は電子銃用カソード保持ハーメチツク部
品の製造に用いる焼成治具に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a firing jig used for manufacturing a hermetic cathode holding part for an electron gun.
第１図は従来より提案されている受像管の電子
銃用カソード保持ハーメチツク部品の一例を示す
要部断面構成図である。同図において、カソード
保持ハーメチツク部品１は、結晶化ガラスからな
るガラス基板２と、このガラス基板２の側面を取
り囲む導体からなる筒状体（以下セラミツクサポ
ートと称する）３と、このガラス基板２を貫通し
インライン状に配置して封着された円筒導体から
なる複数本のカソードサポート（以下アイレツト
と称する）４とから構成され、これらのアイレツ
ト４内にはそれぞれカソードを挿入（図示せず）
してこれと固定して保持されている。そして、こ
のカソード保持ハーメチツク部品は図示しない第
１グリツド電極と所定の位置関係で配置されてい
る。 FIG. 1 is a sectional view showing an example of a cathode holding hermetic component for an electron gun of a picture tube that has been proposed in the past. In the figure, a cathode holding hermetic component 1 includes a glass substrate 2 made of crystallized glass, a cylindrical body (hereinafter referred to as a ceramic support) 3 made of a conductor surrounding the side surface of this glass substrate 2, and a cylindrical body 3 made of a conductor surrounding the side surface of this glass substrate 2. It is composed of a plurality of cathode supports (hereinafter referred to as eyelets) 4 made of cylindrical conductors that are penetrated, arranged in-line, and sealed, and a cathode is inserted into each of these eyelets 4 (not shown).
This is fixed and held. This cathode holding hermetic component is arranged in a predetermined positional relationship with a first grid electrode (not shown).
このように構成されたカソード保持ハーメチツ
ク部品１の製造方法は、第２図に要部断面構成図
で示したようにカーボン治具５ａ〜５ｇに、それ
ぞれ上記セラミツクサポート３、アイレツト４お
よび予め成形ないし仮焼成したペレツト状のもの
あるいは粉末状態の結晶化ガラス６を充填し、
N2雰囲気中で790±10℃で加熱焼成することによ
つて、結晶化ガラス６を軟化流動させ、カーボン
ウエイト７によつて上から押し付けてガラス６の
肉廻りを良くしてセラミツクサポート３、アイレ
ツト４の隅々までガラス６を充分に行きわたるよ
うにしてセラミツクサポート３とアイレツト４と
の接着を充分に行なつてカソード保持ハーメチツ
ク部品１を形成していた。 The method for manufacturing the cathode holding hermetic component 1 configured as described above is as follows: As shown in the cross-sectional view of the main parts in FIG. Filled with pre-fired pellet-like or powdered crystallized glass 6,
The crystallized glass 6 is softened and fluidized by heating and firing at 790±10°C in an N 2 atmosphere, and is pressed from above by a carbon weight 7 to improve the thickness of the glass 6, thereby forming a ceramic support 3. The cathode holding hermetic component 1 was formed by sufficiently adhering the ceramic support 3 and the eyelet 4 by sufficiently spreading the glass 6 to every corner of the eyelet 4.
しかしながら上記従来の製造方法において、焼
成加熱温度が変動した場合やガラス６の量が変動
した場合、特にガラス６の充填量が多い場合に
は、余分なガラス６の逃げ場所がなくなり、第１
図に示したようにセラミツクサポート３のガラス
基板２との接着界面３ａにガラス６のせり上り部
２ａが発生する。そして、このガラス基板２のせ
り上り部２ａはセラミツクサポート３が受像管の
各種の工程で内外方向に変形したり、熱的衝撃が
加えられたときにせり上り部２ａのガラスが落下
する危険性があり、また、落下したガラス片が受
像管のシヤドウマスクの孔を目詰りさせたり、ス
トレースパークの発生の原因となつたりして種々
の不良事故誘発させる恐れがあつた。 However, in the conventional manufacturing method described above, when the firing heating temperature changes or the amount of glass 6 changes, especially when the amount of glass 6 filled is large, there is no place for the excess glass 6 to escape, and the first
As shown in the figure, an elevated portion 2a of the glass 6 is generated at the adhesive interface 3a between the ceramic support 3 and the glass substrate 2. The raised portion 2a of the glass substrate 2 poses a risk that the glass on the raised portion 2a may fall when the ceramic support 3 is deformed in the inner and outer directions during various processes of the picture tube, or when thermal shock is applied. In addition, there was a risk that falling glass pieces could clog the holes in the picture tube's shadow mask or cause trace sparks, leading to various malfunctions.
本発明は、焼成治具内に挿入したガラス材の溶
融時に溶融体を押圧する治具の間隔を制御する段
部、すなわち、ガラス基板の体積が治具の前記ガ
ラス基板を収容する治具間の空間の容積以上とな
るように治具の間隔を制御する段部を有すること
によつて、ガラス材の充填量の増大および焼成温
度の高温度への移行に起因するせり上り部の発生
を防止した電子銃用カソード保持ハーメチツク部
品の製造に用いる焼成治具を提供することを目的
としている。 The present invention provides a stepped portion that controls the interval between the jigs that press the molten material when the glass material inserted into the firing jig is melted, that is, the volume of the glass substrate is By having a stepped portion that controls the interval between the jigs so that the space is equal to or larger than the space volume of It is an object of the present invention to provide a firing jig used for manufacturing a cathode holding hermetic component for an electron gun that is protected from the heat.
以下図面を用いて本発明の実施例を詳細に説明
する。 Embodiments of the present invention will be described in detail below using the drawings.
第３図は本発明による電子銃用カソード保持ハ
ーメチツク部品の製造に用いる焼成治具の一例を
説明するための各材料のカーボン治具への装填状
態を示す要部断面構成図であり、前述の図と同記
号は同一要素となるのでその説明は省略する。同
図において、側型カーボン治具５ａ，５ｃの上方
開口端には荷重用カーボンウエイト７の落下量を
制限する段部５a′，５c′がそれぞれ設けられ、さ
らに下型カーボン治具５ｂの上面には溶融したガ
ラス材の過剰量が逃げ込む凹部５b′が設けられて
いる。このように構成されたカーボン治具５ａ〜
５ｇにFe−Ni合金で形成されたセラミツクサポ
ート３と、完成時のガラス基板が所定の形状寸法
が得られるように計量されたZnO−B2O3−SiO2
−MgO系の結晶化ガラス粉末をプレス成形して
約650℃で約10分で仮焼成したガラスボタン８と、
このガラスボタン８の穴にFe−Ni−Co合金で形
成されたアイレツト４を挿入し、下型カーボン治
具５ｂの穴にそれぞれ挿入し、セラミツクサポー
ト３、ガラスボタン８及びアイレツト４をそれぞ
れ治具で保持固定する。次にガラスボタン８上に
カーボン治具５ｂ〜５ｇを介して約20g／cm2程度
のカーボンウエイト７を配置する。この場合、側
型カーボン治具５ａ，５ｂの段部５a′，５c′とカ
ーボンウエイト７との間には図示されないが隙間
が形成され、さらに下型カーボン治具５ｂとガラ
スボタン８との間には凹部５b′がそれぞれ形成さ
れている。次いで、これを炉の中に入れて約790
±10℃で約30分間焼成する。この場合、ガラスボ
タン８の軟化流動化に伴つてカーボンウエイト７
は下方向に降下し、治具５ｂと５ｄ，５ｅ，５ｆ
及び５ｇ間の間隔を一定の値に規制する段部５
a′，５c′に当接して停止し、一方、下型カーボン
治具５ｂの凹部５b′には過剰量の余分なガラスを
吸収し、加熱が完了した時点ではほとんどガラス
が充填されてカソード保持ハーメチツク部品が形
成されることになる。 FIG. 3 is a cross-sectional configuration diagram of essential parts showing a state in which each material is loaded into a carbon jig for explaining an example of a firing jig used for manufacturing a cathode holding hermetic part for an electron gun according to the present invention. Since the same symbols as those in the figure represent the same elements, their explanation will be omitted. In the figure, stepped portions 5a' and 5c' are provided at the upper opening ends of the side carbon jigs 5a and 5c, respectively, to limit the amount of fall of the loading carbon weight 7, and furthermore, the upper surface of the lower carbon jigs 5b A recess 5b' is provided in which an excess amount of the molten glass material escapes. Carbon jig 5a configured in this way
ZnO-B 2 O 3 -SiO 2 was weighed so that the ceramic support 3 made of Fe-Ni alloy and the completed glass substrate would have the predetermined shape and dimensions.
- A glass button 8 made of MgO-based crystallized glass powder press-molded and pre-sintered at about 650°C for about 10 minutes,
Insert the eyelet 4 made of Fe-Ni-Co alloy into the hole of the glass button 8, insert it into the hole of the lower carbon jig 5b, and attach the ceramic support 3, glass button 8 and eyelet 4 to the jig. Hold and secure. Next, a carbon weight 7 of about 20 g/cm 2 is placed on the glass button 8 via carbon jigs 5b to 5g. In this case, gaps (not shown) are formed between the step portions 5a', 5c' of the side carbon jigs 5a, 5b and the carbon weight 7, and gaps are formed between the lower carbon jig 5b and the glass button 8. A recessed portion 5b' is formed in each. Next, put this in the furnace and heat it to about 790
Bake at ±10℃ for about 30 minutes. In this case, as the glass button 8 softens and becomes fluidized, the carbon weight 7
descends downward, and jigs 5b, 5d, 5e, 5f
and a stepped portion 5 that regulates the interval between 5g and 5g to a constant value.
a', 5c' and stops. On the other hand, the recess 5b' of the lower carbon jig 5b absorbs an excessive amount of glass, and when heating is completed, it is almost filled with glass and holds the cathode. A hermetic part will be formed.
このような焼成治具によつて製作されたカソー
ド保持ハーメチツク部品のせり上り部の高さを調
べた結果、約0.1mm以下であつた。また、これと
全く同じ条件で同じ材料を使用し、カーボン治具
のみ第２図に示す従来のものを使用したときのせ
り上り部の高さは1.0〜2.0mmと大きく、後工程で
のシヤドウマスクの目詰り不良率が約0.2％であ
つたが、上記実施例の焼成治具を用いたもので
は、目詰り不良率を０％と大幅に激減させること
ができた。 The height of the raised portion of the cathode holding hermetic component manufactured using such a firing jig was examined and was found to be approximately 0.1 mm or less. In addition, when using the same material under exactly the same conditions as above, and using only the conventional carbon jig shown in Figure 2, the height of the raised part was as large as 1.0 to 2.0 mm, and the shadow mask was used in the subsequent process. The defect rate due to clogging was approximately 0.2%, but when the firing jig of the above example was used, the rate of defect due to clogging was significantly reduced to 0%.
なお、上記実施例においては、カーボンウエイ
ト７は降下した際段部５a′，５c′に当接したが、
必ずしも当接する必要はない。また、カーボン治
具５ｂとガラスボタン８との間のみに凹部５b′を
設けた場合について説明したが、本発明はこれに
限定されるものではなく、第４図に示したように
上型カーボン治具５ｄ，５ｅ，５ｆ，５ｇにそれ
ぞれ凹部５d′，５e′，５f′，５g′を設けても良く、
また両方に設けても前述と全く同様の効果が得ら
れる。また、前記実施例では凹部を設けたが、要
はガラス基板の体積以上の容積がガラス基板が収
容される治具間に確保されれば前述と同様の効果
が得られることは勿論である。 In the above embodiment, the carbon weight 7 comes into contact with the stepped portions 5a' and 5c' when descending.
They do not necessarily have to be in contact. Further, although the case where the recess 5b' is provided only between the carbon jig 5b and the glass button 8 has been described, the present invention is not limited to this, and as shown in FIG. Recesses 5d', 5e', 5f', and 5g' may be provided in the jigs 5d, 5e, 5f, and 5g, respectively.
Further, even if it is provided on both sides, exactly the same effect as described above can be obtained. Moreover, although the recessed portion was provided in the above embodiment, it is of course possible to obtain the same effect as described above if a volume larger than the volume of the glass substrate is secured between the jigs in which the glass substrate is accommodated.
以上説明したように本発明によれば、ガラス基
板のせり上り部が発生しなくなるので、ガラス片
の落下がなくなり、受像管のシヤドウマスクの目
詰り不良発生率が減少し、損害額が激減し、信頼
性が著しく向上した。また、従来では、せり上り
部の発生により、カーボン治具との強固なかみ合
いが生じ、カーボン治具の取り外しが難かしくな
り、せり上り部にクラツクを生じ、歩留りを著し
く低下させていたが、本発明によればせり上り部
のカーボン治具との強固なかみ合いがなくなり、
カーボン治具が容易に取り外すことができるよう
になり、歩留りが約10％以上向上した。さらには
カーボン粉末の附着量も少なくなり、絶縁不良な
どの特性劣化も皆無となり、品質を大幅に向上さ
せることができた。 As explained above, according to the present invention, since the raised portion of the glass substrate does not occur, the falling of glass pieces is eliminated, the occurrence rate of defective defects due to clogging of the shadow mask of the picture tube is reduced, and the amount of damage is drastically reduced. Reliability has been significantly improved. In addition, in the past, the occurrence of the raised part caused a strong engagement with the carbon jig, making it difficult to remove the carbon jig, causing cracks in the raised part, and significantly reducing the yield. According to the present invention, there is no strong engagement between the raised portion and the carbon jig, and
The carbon jig can now be easily removed, improving yield by more than 10%. Furthermore, the amount of adhesion of carbon powder was reduced, and there was no deterioration of properties such as poor insulation, resulting in a significant improvement in quality.
第１図は従来の電子銃用カソード保持ハーメチ
ツク部品の一例を示す要部断面構成図、第２図は
従来の電子銃用カソード保持ハーメチツク部品の
製造方法を説明するための各材料のカーボン治具
への装填状態を示した要部断面構成図、第３図、
第４図は本発明による電子銃用カソード保持ハー
メチツク部品の製造に用いる焼成治具の実施例を
説明するための各材料のカーボン治具への装填状
態を示した要部断面構成図である。
１……カソード保持ハーメチツク部品、２……
ガラス基板、３……筒状体（セラミツクサポー
ト）、４……カソードサポート（アイレツト）、５
ａ〜５ｇ……カーボン治具、５a′……段部、５
b′……凹部、５c′……段部、６……ガラス、７…
…カーボンウエイト、８……ガラスボタン。
Fig. 1 is a cross-sectional configuration diagram of main parts showing an example of a conventional cathode holding hermetic part for an electron gun, and Fig. 2 is a carbon jig made of various materials for explaining the manufacturing method of a conventional cathode holding hermetic part for an electron gun. Fig. 3 is a cross-sectional configuration diagram of main parts showing the loading state of the
FIG. 4 is a cross-sectional configuration diagram of main parts showing a state in which various materials are loaded into a carbon jig for explaining an embodiment of a firing jig used for manufacturing a cathode holding hermetic part for an electron gun according to the present invention. 1... Cathode holding hermetic parts, 2...
Glass substrate, 3... Cylindrical body (ceramic support), 4... Cathode support (eyelet), 5
a~5g...Carbon jig, 5a'...Stepped part, 5
b'...Concavity, 5c'...Step, 6...Glass, 7...
...Carbon weight, 8...Glass button.
Claims (1)
む筒状体と、前記ガラス基板を貫通して植設され
た複数本のサポートを備えた電子銃用カソード保
持ハーメチツク部品の製造に用いる焼成治具にお
いて、該焼成治具は前記筒状体及びサポートを保
持する第１の保持部と、前記ガラス基板を構成す
るため前記焼成治具内に充填される結晶化ガラス
粉末もしくは予め仮焼成したペレツトを保持する
第２の保持部と、該第２の保持部の容積を前記ガ
ラス基板の体積以上になるように治具間間隔を制
御する段部とを有することを特徴とする電子銃用
カソード保持ハーメチツク部品の焼成治具。1. Firing used for manufacturing an electron gun cathode holding hermetic component comprising a glass substrate, a cylindrical body surrounding the side peripheral surface of the glass substrate, and a plurality of supports implanted through the glass substrate. In the jig, the firing jig includes a first holding part that holds the cylindrical body and the support, and a crystallized glass powder or pre-fired glass powder filled in the firing jig to form the glass substrate. An electron gun comprising: a second holding part for holding a pellet; and a stepped part for controlling the interval between jigs so that the volume of the second holding part is greater than or equal to the volume of the glass substrate. Firing jig for cathode holding hermetic parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12520881A JPS5828155A (en) | 1981-08-12 | 1981-08-12 | Manufacture of hermetic member used for supporting electron-gun cathode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12520881A JPS5828155A (en) | 1981-08-12 | 1981-08-12 | Manufacture of hermetic member used for supporting electron-gun cathode |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1494990A Division JPH02223126A (en) | 1990-01-26 | 1990-01-26 | Manufacture of cathode holding hermetic component for electron gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5828155A JPS5828155A (en) | 1983-02-19 |
| JPH0437532B2 true JPH0437532B2 (en) | 1992-06-19 |
Family
ID=14904557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12520881A Granted JPS5828155A (en) | 1981-08-12 | 1981-08-12 | Manufacture of hermetic member used for supporting electron-gun cathode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5828155A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5099170A (en) * | 1989-09-13 | 1992-03-24 | Hitachi, Ltd. | Cathode supporting structure for color cathode-ray tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5659424A (en) * | 1979-10-22 | 1981-05-22 | Hitachi Ltd | Manufacture of cathode supporting parts |
-
1981
- 1981-08-12 JP JP12520881A patent/JPS5828155A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5828155A (en) | 1983-02-19 |
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