JPH0371732B2 - - Google Patents
Info
- Publication number
- JPH0371732B2 JPH0371732B2 JP2014949A JP1494990A JPH0371732B2 JP H0371732 B2 JPH0371732 B2 JP H0371732B2 JP 2014949 A JP2014949 A JP 2014949A JP 1494990 A JP1494990 A JP 1494990A JP H0371732 B2 JPH0371732 B2 JP H0371732B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- carbon
- cathode
- jig
- button
- 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
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
品の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a cathode holding hermetic component 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とを具備し、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 equipped with a plurality of cathode supports (hereinafter referred to as eyelets) 4 made of cylindrical conductors that penetrate through the cathode and are arranged in-line and sealed, and these eyelets 4
A cathode (not shown) is inserted into each of these and is fixedly held therein. 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を装填し、
N2雰囲気中で約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の隅々まだガラス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 shown in FIG. 2, which is a cross-sectional view of the main parts. Loaded with pre-fired pellet-like or powdered crystallized glass 6,
The crystallized glass 6 is softened and fluidized by heating and firing at approximately 790±10°C in an N 2 atmosphere, and the glass 6 is pressed from above by a carbon weight 7.
The ceramic support 3 and eyelet 4 are made by improving the thickness of the ceramic support 3 and the eyelet 4 so that the glass 6 is sufficiently distributed in every corner of the ceramic support 3 and eyelet 4.
The cathode holding hermetic part 1 was formed by sufficiently adhering to the cathode holding hermetic part 1.
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
の不良事故を誘発させる恐れがあつた。 However, in the above conventional manufacturing method, 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 outward and outward 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 shadow mask of the picture tube or cause trace sparks, leading to various malfunctions.
したがつて本発明は、ガラス材を挿入したカー
ボン治具にカーボンウエイトの落下量を制限する
ようにして焼成することによつて、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記
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方法を提供する
ことを目的としている。 Therefore, the present invention increases the filling amount of the glass material and shifts the firing temperature to a high temperature by firing the carbon jig in which the glass material is inserted while limiting the amount of the carbon weight falling. It is an object of the present invention to provide a method for manufacturing a hermetic cathode holding part for an electron gun, which prevents the occurrence of raised portions caused by the above.
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 with reference to 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方法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スト
ツパ５a′，５b′がそれぞれ設けられ、さらに下型
カーボン治具５ｂの上面には過剰量のガラス材が
逃げ込む隙間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を配置し、
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を収容する。次に予め形成された
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５
ｂのアイレツト受け穴にそれぞれ挿入して固定す
る。次にガラスボタン８上に中型カーボン治具５
ｄ〜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のストツパ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との間には隙間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
は軟化流動化に伴なつてカーボンウエイト７は下
方向に降下し、降下量を一定位置に規制するスト
ツパ５a′，５c′に当接して停止し、一方、下型カ
ーボン治具５ｂの隙間５b′には過剰量量の余分な
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 main parts showing a state in which each material is loaded into a carbon jig for explaining an example of the manufacturing method of a cathode holding hermetic component for an electron gun according to the present invention, and is marked with the same symbols as in the previous figure. Since they are the same element, their explanation will be omitted. In the same figure,
Stoppers 5a' and 5b' 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, on the upper surface of the lower carbon jig 5b, an excessive amount of A gap 5b' into which the glass material escapes is provided. A ceramic support 3 made of Fe-Ni alloy is placed on the carbon jigs 5a to 5g configured in this way,
A glass button 8 is housed in which a ZnO-B 2 O 3 -SiO 2 -MgO-based crystallized glass powder is press-molded and pre-sintered at about 650° C. for about 10 minutes. Next, the eyelet 4 made of Fe-Ni-Co alloy is inserted into the hole of the glass button 8 formed in advance, and the lower carbon jig 5 is inserted.
Insert each into the eyelet receiving holes b and secure. Next, place the medium-sized carbon jig 5 on the glass button 8.
A carbon weight 7 of approximately 20 g/cm 2 is placed through the d~5 g. In this case, gaps (not shown) are formed between the stoppers 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 gap 5b' is formed respectively. Next, put it in a furnace and heat it to about 790±10℃.
Bake for about 30 minutes. In this case, glass button 8
As the carbon weight 7 softens and becomes fluidized, the carbon weight 7 descends downward and comes into contact with stoppers 5a' and 5c' that regulate the amount of descent to a constant position and stops. ' will absorb an excess amount of excess glass, and by the time heating is complete it will be mostly filled with glass to form the cathode holding hermetic component.
このような方法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、上記方法によると、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 by this method 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 clogging defect rate was approximately 0.2%, but according to the above method, the clogging defect rate could be drastically reduced to 0%.
なお、上記実施例においては、カーボンウエイ
ト７は降下した際ストツパ５a′，５c′に当接した
が、ガラスボタン８の量等によつてはカーボンウ
エイト７はストツパ５a′，５c′に近接した位置で
停止してもよい。 In the above embodiment, the carbon weight 7 came into contact with the stoppers 5a', 5c' when it descended, but depending on the amount of the glass button 8, etc., the carbon weight 7 could come close to the stoppers 5a', 5c'. You can stop at any position.
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 raised parts caused a strong engagement with the carbon jig, making it difficult to remove the carbon jig, causing cracks in the raised parts, and significantly reducing yields. According to the invention, the strong engagement with the carbon jig at the raised part is eliminated,
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
部品の製造方法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図
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′……ストツパ、
５b′……隙間、５c′……ストツパ、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 sectional view showing the main parts loaded into the carbon jig, and FIG. FIG. 1... Cathode holding hermetic parts, 2...
Glass substrate, 3... Cylindrical body (ceramic support), 4... Cathode support (eyelet), 5
a~5g...carbon jig, 5a'...stopper,
5b'...Gap, 5c'...Stopper, 6...Glass, 7...Carbon weight, 8...Glass button.
Claims (1)
取り囲む導体からなる筒状体３と、前記ガラス基
板を貫通して植立された円筒導体からなる複数本
のカソードサポート４と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方法において、 開口端にカーボンウエイトの落下量を制限する
ストツパ５a′，５c′を設けた側型カーボン治具５
ａ，５ｃと、カソードサポート４の受け穴と過剰
量の余分なガラスを吸収するための前記筒状体３
の下端からさらに下方に形成した隙間５b′を上面
に形成した下型カーボン治具５ｂとからなる焼成
治具内に前記筒状体３，カソードサポート４，及
び結晶化ガラス粉末をプレス成形後仮焼成して得
たカソードサポート４を挿入する穴をもつガラス
ボタン８を挿入する工程と、 前記ガラスボタン８の上記穴から下型カーボン
治具５ｂのカソードサポート受け穴にカソードサ
ポート４を挿入する工程と、 前記ガラスボタン８の上面にその下端を当接し
た中型カーボン治具５ｄ，５ｅ，５ｆ，５ｇを介
して、側型カーボン治具５ａ，５ｃのストツパ５
a′，５c′との間に隙間をもたせてカーボンウエイ
ト７を配置する工程と、 前記カーボン治具５ａ，５ｂ，５ｃ，５ｄ，５
ｅ，５ｆ，５ｇを含めた全体を焼成する工程とを
備え、 前記ガラスボタン８の軟化流動化に伴つてカー
ボンウエイト７が前記側型カーボン治具５ａ，５
ｃのストツパ５a′，５c′に当接して停止し、前記
ガラスボタン８の軟化流動化による過剰量の余分
なガラスを前記下型カーボン治具５ｂの隙間５
b′に吸収させることにより、前記過剰量の余分な
ガラスの前記筒状態３との接着界面におけるせり
上がりの発生を無くした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製造方法。[Claims] 1. A glass substrate 2, a cylindrical body 3 made of a conductor surrounding the side circumferential surface of the glass substrate, and a plurality of cathode supports made of cylindrical conductors planted through the glass substrate. In the manufacturing method of a cathode holding hermetic part for an electron gun, the side carbon jig 5 is provided with stoppers 5a' and 5c' at the opening end to limit the falling amount of the carbon weight.
a, 5c, a receiving hole of the cathode support 4 and the cylindrical body 3 for absorbing an excessive amount of excess glass.
After press-molding the cylindrical body 3, cathode support 4, and crystallized glass powder, the cylindrical body 3, the cathode support 4, and the crystallized glass powder are temporarily placed in a firing jig consisting of a lower mold carbon jig 5b having a gap 5b' formed further downward from the lower end on the upper surface. A step of inserting a glass button 8 having a hole into which the cathode support 4 obtained by firing is inserted; and a step of inserting the cathode support 4 from the hole of the glass button 8 into the cathode support receiving hole of the lower carbon jig 5b. Then, the stoppers 5 of the side carbon jigs 5a, 5c are inserted through the medium sized carbon jigs 5d, 5e, 5f, 5g whose lower ends are in contact with the upper surface of the glass button 8.
arranging the carbon weight 7 with a gap between it and the carbon jigs 5a, 5b, 5c, 5d, 5;
e, 5f, and 5g, and as the glass button 8 softens and becomes fluidized, the carbon weight 7 is heated to the side mold carbon jigs 5a, 5.
The glass buttons 8 are brought into contact with the stoppers 5a' and 5c' and stopped, and the excess glass caused by the softening and fluidization of the glass button 8 is removed from the gap 5 of the lower carbon jig 5b.
A method for producing a hermetic cathode holding part for an electron gun, characterized in that by absorbing the excessive amount of glass into the tube 3, the excess glass is prevented from rising at the adhesive interface with the cylindrical state 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1494990A JPH02223126A (en) | 1990-01-26 | 1990-01-26 | Manufacture of cathode holding hermetic component for electron gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1494990A JPH02223126A (en) | 1990-01-26 | 1990-01-26 | Manufacture of cathode holding hermetic component for electron gun |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12520881A Division JPS5828155A (en) | 1981-08-12 | 1981-08-12 | Manufacture of hermetic member used for supporting electron-gun cathode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02223126A JPH02223126A (en) | 1990-09-05 |
| JPH0371732B2 true JPH0371732B2 (en) | 1991-11-14 |
Family
ID=11875230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1494990A Granted JPH02223126A (en) | 1990-01-26 | 1990-01-26 | Manufacture of cathode holding hermetic component for electron gun |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02223126A (en) |
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 |
-
1990
- 1990-01-26 JP JP1494990A patent/JPH02223126A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02223126A (en) | 1990-09-05 |
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