JPH02123643A - Cathode body for color picture tube - Google Patents
Cathode body for color picture tubeInfo
- Publication number
- JPH02123643A JPH02123643A JP27647088A JP27647088A JPH02123643A JP H02123643 A JPH02123643 A JP H02123643A JP 27647088 A JP27647088 A JP 27647088A JP 27647088 A JP27647088 A JP 27647088A JP H02123643 A JPH02123643 A JP H02123643A
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- sleeve
- cathodes
- support
- support body
- 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
- 239000010953 base metal Substances 0.000 claims abstract description 11
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 abstract description 4
- 239000011521 glass Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はカラー受像管の陰極構体に関し、特にインライ
ン型カラー受像管の陰極構体に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cathode assembly for a color picture tube, and more particularly to a cathode assembly for an in-line color picture tube.
従来、この種の陰極支持体に結晶化ガラス等により、陰
極スリーブ支持体をハーメチック等で支持固定している
陰極構体は、第４図に示すように、３つの陰極スリーブ
支持体２に溶接固定された陰極スリーブ４の開孔端より
挿入されたヒータ７により加熱されて、陰極スリーブ４
の頂部に溶接固定され、はぼ帽状に成形された陰極基体
金属５に含まれる還元剤と、陰極基体金属５に被覆され
たアルカリ土類酸化物６との反応が促進されて７００〜
８００℃の動作温度において電子放出が行われていた。Conventionally, the cathode assembly in which the cathode sleeve support is hermetically supported and fixed to this type of cathode support using crystallized glass or the like is fixed to three cathode sleeve supports 2 by welding, as shown in Fig. 4. The cathode sleeve 4 is heated by the heater 7 inserted through the open end of the cathode sleeve 4.
The reaction between the reducing agent contained in the cathode base metal 5, which is welded and fixed to the top of the cathode base metal 5 shaped like a cap, and the alkaline earth oxide 6 coated on the cathode base metal 5 is promoted,
Electron emission occurred at an operating temperature of 800°C.
この陰極構体を構成する３つの陰極スリーブ支持体３の
それぞれが、それぞれの陰極１からのスパッタ物質を遮
蔽する為に、第１グリツドに向って円筒状にのびている
。Each of the three cathode sleeve supports 3 constituting this cathode structure extends cylindrically towards the first grid in order to shield sputtered material from the respective cathode 1.
しかしながら、上述した従来の陰極構体の陰極スリーブ
支持体と第１グリツドの間隔は、製造工程及び個々の部
品の仕上り精度のばらつきなどを考えると、陰極と第１
グリツドのショートが起り、極端にせまくすることがで
きなかった。その為、第１グリツドと陰極スリーブ支持
体とのすきまから、陰極の構成物質であるＢａ、Ｎｔ。However, the distance between the cathode sleeve support and the first grid in the conventional cathode structure described above is limited, considering the manufacturing process and variations in finishing accuracy of individual parts.
A short circuit occurred in the grid, and it was not possible to make it extremely narrow. Therefore, from the gap between the first grid and the cathode sleeve support, Ba and Nt, which are the constituent materials of the cathode, are removed.
Ｍｇ、Ｃｒ等などがそれぞれの陰極間にスパッタし、陰
極間の絶縁が低下し、長期間にわたり使用すると、ホワ
イトバランス崩れと呼ばれる色調の変化を生じるなどの
欠点があった。Mg, Cr, etc. sputter between the respective cathodes, reducing the insulation between the cathodes, and when used for a long period of time, there are disadvantages such as a change in color tone called white balance collapse.
本発明の目的は、長期にわたり色調の変化を生ずること
のない信頼性の高い、カラー受像管用陰極構体を得るこ
とにある。An object of the present invention is to obtain a highly reliable cathode assembly for a color picture tube that does not cause any change in color tone over a long period of time.
本発明は、陰極スリーブと、該陰極スリーブ上に固定さ
れた桁上の基体金属と、該基体金属上に被覆されたアル
カリ土類金属と、前記陰極スリーブ内に挿入されたヒー
タとを備えた青、緑、赤用の３個の陰極がそれぞれの陰
極スリーブ支持体を介して陰極支持体に支えられ直線上
に配置固定されたカラー受像管の陰極構体において、前
記３個の陰極を支持する前記陰極支持体上に間隔を置い
て配置した遮蔽板が設けられている。The present invention includes a cathode sleeve, a base metal on a spar fixed on the cathode sleeve, an alkaline earth metal coated on the base metal, and a heater inserted into the cathode sleeve. In a cathode structure of a color picture tube, three cathodes for blue, green, and red are supported by a cathode support via their respective cathode sleeve supports, and arranged and fixed in a straight line, in which the three cathodes are supported. A spaced apart shielding plate is provided on the cathode support.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図及び第２図は本発明の一実施例の縦断面図及び横
断面図、第３図は第１図及び第２図の遮蔽板の斜視図で
ある。1 and 2 are a longitudinal sectional view and a transverse sectional view of an embodiment of the present invention, and FIG. 3 is a perspective view of the shielding plate of FIGS. 1 and 2.
第１図に示すように、陰極１は直線上に並列配置され、
陰極スリーブ支持体２および陰極支持体３を介してガラ
ス棒（図示せず）に支持固定されている。それぞれの陰
極１は、陰極スリーブ４と、この陰極スリーブ４に溶接
固定された帽状の陰極基体金属５と、この陰極基体金属
５の頂部に塗布されたアルカリ土類酸化物６とによって
構成され、それぞれの陰極スリーブ４の中にはヒータ７
が挿入され、ヒータ７は、ヒータ支持体（図示せず）に
溶接固定されている。As shown in FIG. 1, cathodes 1 are arranged in parallel on a straight line,
It is supported and fixed to a glass rod (not shown) via a cathode sleeve support 2 and a cathode support 3. Each cathode 1 is composed of a cathode sleeve 4, a cap-shaped cathode base metal 5 welded and fixed to the cathode sleeve 4, and an alkaline earth oxide 6 coated on the top of the cathode base metal 5. , a heater 7 is provided in each cathode sleeve 4.
is inserted, and the heater 7 is welded and fixed to a heater support (not shown).
また、それぞれの陰極１間の陰極支持体３上には第３図
に示す遮蔽板９が第２図に示すように、第１グリツド８
に溶接固定され、陰極支持体３を被覆している。Further, on the cathode support 3 between each cathode 1, a shielding plate 9 shown in FIG. 3 is provided, as shown in FIG.
It is welded and fixed to the cathode support 3 and covers the cathode support 3.
この実施例の陰極支持体２と第１グリツド８との間隔ｆ
ｆ１ｌは第４図に示す従来の陰極構体の陰極支持体２と
第１グリツドとの間隔ｇ２より広いが、従来の陰極構体
よりも同等以上の優れた遮蔽効果を有する。The distance f between the cathode support 2 and the first grid 8 in this embodiment
Although f1l is wider than the distance g2 between the cathode support 2 and the first grid of the conventional cathode structure shown in FIG. 4, it has a shielding effect that is equivalent to or better than that of the conventional cathode structure.
以上説明したように本発明は、インライン型陰極構体に
おいて、３個の陰極を支持する陰極支持体上に間隔をお
いて配置した遮蔽板を設けることにより、長時間使用後
におこる陰極支持体への陰極からのスパッタ物質による
陰極間の絶縁低下を防ぎ、長期間にわたり、信頼性の高
いカラー受像管用陰極構体を得ることが出来るという効
果がある。As explained above, the present invention provides an in-line cathode assembly with shielding plates placed at intervals on the cathode support supporting three cathodes, thereby preventing damage to the cathode support that occurs after long-term use. This has the effect of preventing the insulation between the cathodes from deteriorating due to the sputtered material from the cathodes, and making it possible to obtain a cathode assembly for a color picture tube that is highly reliable over a long period of time.
第１図及び第２図は本発明の一実施例の縦断面図及び横
断面図、第３図は第１図及び第２図の遮蔽板の斜視図、
第４図は従来のカラー受像管の陰極構体の一例の縦断面
図である。
１・・・陰極、２・・・陰極スリーブ支持体、３・・・
陰極支持体、４・・・陰極スリーブ、５・・・陰極基体
金属、６・・・アルカリ土類酸化物、７・・・ヒータ、
８・・・第１グリツド、９・・・遮蔽板。1 and 2 are longitudinal and transverse sectional views of one embodiment of the present invention, and FIG. 3 is a perspective view of the shielding plate of FIGS. 1 and 2.
FIG. 4 is a longitudinal sectional view of an example of a cathode structure of a conventional color picture tube. 1... Cathode, 2... Cathode sleeve support, 3...
Cathode support, 4... Cathode sleeve, 5... Cathode base metal, 6... Alkaline earth oxide, 7... Heater,
8... First grid, 9... Shielding plate.
Claims (1)
基体金属と、該基体金属上に被覆されたアルカリ土類金
属と、前記陰極スリーブ内に挿入されたヒータとを備え
た青、緑、赤用の３個の陰極がそれぞれの陰極スリーブ
支持体を介して陰極支持体に支えられ直線上に配置固定
されたカラー受像管の陰極構体において、前記３個の陰
極を支持する前記陰極支持体上に間隔を置いて配置した
遮蔽板を設けたことを特徴とするカラー受像管の陰極構
体。blue, green, comprising a cathode sleeve, a base metal on a cap fixed on the cathode sleeve, an alkaline earth metal coated on the base metal, and a heater inserted in the cathode sleeve; In the cathode assembly of a color picture tube in which three cathodes for red are supported by the cathode support via respective cathode sleeve supports and arranged and fixed in a straight line, the cathode support supports the three cathodes. A cathode structure for a color picture tube, characterized in that a shielding plate is provided at a spaced interval above the cathode structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27647088A JPH02123643A (en) | 1988-10-31 | 1988-10-31 | Cathode body for color picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27647088A JPH02123643A (en) | 1988-10-31 | 1988-10-31 | Cathode body for color picture tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02123643A true JPH02123643A (en) | 1990-05-11 |
Family
ID=17569900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27647088A Pending JPH02123643A (en) | 1988-10-31 | 1988-10-31 | Cathode body for color picture tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02123643A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05190108A (en) * | 1992-01-13 | 1993-07-30 | Nec Corp | Cathode structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0251828A (en) * | 1988-08-12 | 1990-02-21 | Hitachi Ltd | Cathode supporting body structure for cathode-ray tube |
-
1988
- 1988-10-31 JP JP27647088A patent/JPH02123643A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0251828A (en) * | 1988-08-12 | 1990-02-21 | Hitachi Ltd | Cathode supporting body structure for cathode-ray tube |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05190108A (en) * | 1992-01-13 | 1993-07-30 | Nec Corp | Cathode structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4185223A (en) | Electron gun structure | |
| JPS6217347B2 (en) | ||
| GB1533092A (en) | Electronic tube | |
| JPH02123643A (en) | Cathode body for color picture tube | |
| PL124306B1 (en) | Colour picture tube | |
| US3634720A (en) | Gaseous display panel having two arrays of gas cells | |
| JPS6231471B2 (en) | ||
| US3651364A (en) | Multiple cathode display tube | |
| US3984720A (en) | Discharge display device | |
| US6130499A (en) | Cathode ray tube having an improved cathode structure | |
| US5721469A (en) | Electron gun for cathode ray tubes | |
| JPH0525160Y2 (en) | ||
| JPS56106352A (en) | Electron gun frame for color picture tube | |
| JPH0410697B2 (en) | ||
| US5341064A (en) | Cathode assembly of an electron gun for a color cathode ray tube | |
| JPH054190Y2 (en) | ||
| JPS612241A (en) | Resistor built in cathode-ray tube | |
| JPS5813576Y2 (en) | fluorescent display tube | |
| JP2504124Y2 (en) | Electron gun assembly for cathode ray tube | |
| GB814298A (en) | Improvements in or relating to cathode ray tubes | |
| JPH0794111A (en) | Cathode structure for color cathode ray tube | |
| JPH0160893B2 (en) | ||
| JPS63184235A (en) | Color cathode-ray tube | |
| JPH0212732A (en) | Image tube | |
| JPH05190108A (en) | Cathode structure |