JPS6311742B2 - - Google Patents
Info
- Publication number
- JPS6311742B2 JPS6311742B2 JP9611079A JP9611079A JPS6311742B2 JP S6311742 B2 JPS6311742 B2 JP S6311742B2 JP 9611079 A JP9611079 A JP 9611079A JP 9611079 A JP9611079 A JP 9611079A JP S6311742 B2 JPS6311742 B2 JP S6311742B2
- Authority
- JP
- Japan
- Prior art keywords
- grid
- electron gun
- electrode element
- gun assembly
- electrode
- 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
Links
- 238000010894 electron beam technology Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 8
- 125000006850 spacer group Chemical group 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000003086 colorant Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical group 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
Description
【発明の詳細な説明】
本発明は電子銃構体に係り、特にカラー受像管
の管内放電電流を抑制するようにした電子銃構体
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electron gun assembly, and more particularly to an electron gun assembly configured to suppress the discharge current within a color picture tube.
カラー受像管に内装される例えばバイポテンシ
ヤル形の電子銃構体は第１図に示す構造を有して
いる。 For example, a bipotential type electron gun assembly installed in a color picture tube has a structure shown in FIG.
即ち、電子銃構体１はヒータ２を内装する陰極
３、第１グリツド４、第２グリツド５、第３グリ
ツド６、及び最終加速電極としての第４グリツド
７からなる複数個の電極が、各植設部３1，４1，
５1，６1，７1を介してビートガラスなどからな
る支持体９に固定されてなり、コンバーゼンスカ
ツプ８には特に植設部がなく、第４グリツド７に
固定され、更にコンバーゼンスカツプ８の上端部
にはバルブスペーサ１０が装置されている。 That is, the electron gun assembly 1 has a plurality of electrodes, each consisting of a cathode 3 containing a heater 2, a first grid 4, a second grid 5, a third grid 6, and a fourth grid 7 serving as the final accelerating electrode. Set part 3 1 , 4 1 ,
5 1 , 6 1 , and 7 1 to a support 9 made of beet glass or the like.The convergence cap 8 has no particular implantation part, and is fixed to the fourth grid 7 . A valve spacer 10 is provided at the upper end.
次に前述した電子銃構体１を内装するカラー受
像管を第２図によつて説明する。 Next, a color picture tube incorporating the above-mentioned electron gun assembly 1 will be explained with reference to FIG.
即ち内面に電子ビームの射突により、赤、緑、
青、各色に発光するドツト状または帯状の蛍光体
層が規則的に被着形成された蛍光面１１を有する
パネル１２と、このパネル１２にフアンネル１３
を介して連接されたネツク１４と、このネツク１
４に内装された電子銃構体１と、この電子銃構体
１から射出された電子ビーム１５を所望蛍光体層
に選択して射突させるシヤドウマスク１６と、フ
アンネル１３内面に被着された導電被膜１７を介
して第４グリツド７、蛍光面１１、シヤドウマス
ク１６などに陽極電圧を印加する陽極端子１８
と、前記コンバーゼンスカツプ８にゲツターサポ
ート１９を介してフアンネル１３内面の導電被膜
１７に当接するように設けられたゲツタ２０など
からなつている。 In other words, due to the impact of the electron beam on the inner surface, red, green,
A panel 12 has a phosphor screen 11 on which dot-shaped or band-shaped phosphor layers that emit light in blue and various colors are regularly deposited, and a funnel 13 is attached to this panel 12.
The network 14 connected via
4, a shadow mask 16 that allows the electron beam 15 emitted from the electron gun assembly 1 to selectively strike a desired phosphor layer, and a conductive coating 17 deposited on the inner surface of the funnel 13. An anode terminal 18 that applies an anode voltage to the fourth grid 7, the phosphor screen 11, the shadow mask 16, etc. via the
A getter 20 is provided on the convergence cup 8 via a getter support 19 so as to contact the conductive coating 17 on the inner surface of the funnel 13.
この様な構造のカラー受像管を動作させる場
合、電子銃構体１には陽極電圧としての25kV乃
至30kVの高電圧が陽極端子１８、導電被膜１７、
バルブスペーサ１０を介してコンバーゼンスカツ
プ８と最終加速電極である第４グリツド７に印加
される。また、第３グリツド６にはこの陽極電圧
の20％乃至30％程度の電圧が印加され、この第３
グリツド６と第４グリツド７間に主電子レンズが
形成される。また陰極３、第１グリツド４、第２
グリツド５及び第３グリツド６間には所謂３極部
が形成されるが、この３極部に於ける各電極に印
加される電圧は比較的低電圧であり、電子銃構体
１に於て第４グリツド７と第３グリツド６の両電
極間の電位差が最も大きく20kVとなつている。 When operating a color picture tube having such a structure, a high voltage of 25 kV to 30 kV is applied to the electron gun assembly 1 as an anode voltage to the anode terminal 18, the conductive coating 17,
It is applied via the valve spacer 10 to the convergence cup 8 and the fourth grid 7, which is the final accelerating electrode. Further, a voltage of about 20% to 30% of this anode voltage is applied to the third grid 6, and this
A main electron lens is formed between the grid 6 and the fourth grid 7. Also, the cathode 3, the first grid 4, the second grid
A so-called three-pole section is formed between the grid 5 and the third grid 6, but the voltage applied to each electrode in this three-pole section is relatively low voltage. The potential difference between the electrodes of the fourth grid 7 and the third grid 6 is the largest, 20 kV.
前述した構造からなるカラー受像管をカラーテ
レビジヨン受像機に組込み稼働するとき、種々の
原因から管内放電が発生することがある。この管
内放電は電位差の最も大きい第３グリツド６と第
４グリツド７間に発生しやすい。そして、この管
内放電時の放電電流の値は外部回路条件によつて
異なるが非常に大きく、この放電電流によりカラ
ーテレビジヨン受像機に組込まれたトランジスタ
や集積回路素子などの半導体素子が破壊されるこ
とがあり、大きな技術的問題となつている。 When a color picture tube having the above-described structure is incorporated into a color television receiver and operated, discharge within the tube may occur due to various causes. This intraluminal discharge tends to occur between the third grid 6 and the fourth grid 7, where the potential difference is the largest. The value of the discharge current during this tube discharge varies depending on the external circuit conditions, but it is very large, and this discharge current destroys semiconductor elements such as transistors and integrated circuit elements built into color television receivers. This has become a major technical problem.
この放電電流を抑制するため、従来特に陽極端
子１８とバルブスペーサ１０間の導電被膜１７に
400Ω程度の抵抗をもたせ、管内放電が起つた時、
この抵抗により放電電流を減少させる方法が取ら
れている。 In order to suppress this discharge current, the conductive coating 17 between the anode terminal 18 and the bulb spacer 10 has conventionally been used.
When a tube discharge occurs with a resistance of about 400Ω,
This resistance is used to reduce the discharge current.
然るに一方カラー受像管内の真空度を上げるの
にゲツタ２０内のゲツタ物質を飛散させる必要が
ある。このゲツター物質は一般に導電性のBaが
主成分であり、このBaが導電被膜１７上に被着
するため、前述した導電被膜１７の抵抗を所望値
に保つことが困難となる。更にゲツタサポート１
９は通常導電部材から形成されており、かつゲツ
タ２０が導電被膜１７に接触するように設けられ
ているので、前述のように導電被膜１７に所望値
の抵抗をもたせても、前述したゲツタ２０、ゲツ
タサポート１９により短絡されることになり、導
電被膜１７の抵抗を所望値にすることは困難であ
る。 However, in order to increase the degree of vacuum within the color picture tube, it is necessary to scatter the getter material within the getter 20. This getter material generally has conductive Ba as its main component, and since this Ba adheres to the conductive film 17, it becomes difficult to maintain the resistance of the conductive film 17 at a desired value. Furthermore, Getsuta Support 1
9 is usually made of a conductive member, and the getter 20 is provided so as to be in contact with the conductive coating 17. Therefore, even if the conductive coating 17 has a desired resistance as described above, the getter 20 described above is , the getter support 19 causes a short circuit, and it is difficult to set the resistance of the conductive film 17 to a desired value.
他の対策として、米国特許第1457798号明細書
に示されているように、絶縁体からなるコンバー
ゼンスカツプを使用し、このコンバーゼンスカツ
プの外周に抵抗体のワイヤを巻装し、このワイヤ
の一端をバルブスペーサに接続し、他の一端を最
終加速電極に接続する構造も考えられるが、この
構造に於てはコンバーゼンス電極を特別な構造に
する必要があり、高価となるばかりでなく、電子
銃構体の重量も増加し、振動に対しても極めて弱
くなり、かつ、コンバーゼンスカツプが絶縁体と
なつているので、電子ビームの集中特性が悪くな
るなど不所望な結果を招く欠点がある。 Another solution, as shown in U.S. Pat. No. 1,457,798, is to use a convergence cup made of an insulator, wrap a resistor wire around the circumference of the convergence cup, and connect one end of the wire to the convergence cup. A structure in which the convergence electrode is connected to the valve spacer and the other end is connected to the final accelerating electrode is also conceivable, but in this structure, the convergence electrode needs to have a special structure, which is not only expensive but also reduces the cost of the electron gun structure. This increases the weight of the device, makes it extremely vulnerable to vibrations, and since the convergence cup is an insulator, it has the disadvantage of causing undesirable results such as poor electron beam concentration characteristics.
本発明は前記従来の電子銃構体の諸欠点に鑑み
なされたものであり、管内放電時の放電電流を極
めて効果的に抑制することが可能な簡単な構造を
有する電子銃構体を提供することを目的としてい
る。 The present invention has been made in view of the various drawbacks of the conventional electron gun assembly, and it is an object of the present invention to provide an electron gun assembly having a simple structure that can extremely effectively suppress the discharge current during tube discharge. The purpose is
次に本発明の電子銃構体の一実施例を第３図に
よつて説明する。 Next, one embodiment of the electron gun assembly of the present invention will be described with reference to FIG.
即ち電子銃構体２１はヒータ２２を内装する陰
極２３、第１グリツド２４、第２グリツド２５、
第３グリツド２６、及び最終加速電極としての第
４グリツド２７からなる複数個の電極およびコン
バーゼンスカツプ２８が各植設部２３1，２４1，
２５1，２６1，２７1，２８1を介してビードガラ
スなどからなる支持体２９に固定されてなり、コ
ンバーゼンスカツプ２８の上端部にはバルブスペ
ーサ３０が装着され、かつ前記第４グリツド２７
は導電部材からなる第１の電極素子２７ａと所定
の抵抗値を有する抵抗部材からなる第２の電極素
子２７ｂにより構成されていることを特徴として
いる。 That is, the electron gun assembly 21 includes a cathode 23 containing a heater 22, a first grid 24, a second grid 25,
A plurality of electrodes consisting of a third grid 26 and a fourth grid 27 as a final accelerating electrode and a convergence cup 28 are connected to each implanted portion 23 1 , 24 1 ,
25 1 , 26 1 , 27 1 , 28 1 to a support 29 made of bead glass or the like, a valve spacer 30 is attached to the upper end of the convergence cap 28 , and the fourth grid 27
The device is characterized by being composed of a first electrode element 27a made of a conductive member and a second electrode element 27b made of a resistive member having a predetermined resistance value.
次にこの電子銃構体２１を内装したカラー受像
管を第４図により説明する。 Next, a color picture tube incorporating this electron gun assembly 21 will be explained with reference to FIG.
即ち内面に電子ビームの射突により赤、緑、青
各色に発光するドツト状または帯状の蛍光体層が
規則的に被着形成された蛍光面３１を有するパネ
ル３２と、このパネル３２にフアンネル３３を介
して連接されたネツク３４と、このネツク３４に
内装された電子銃構体２１と、この電子銃構体２
１から射出された電子ビーム３５を所望蛍光体層
に選択して射突させるシヤドウマスク３６と、フ
アンネル３３内面に被着された導電被膜３７に陽
極電圧を印加する陽極端子３８と、前記コンバー
ゼンスカツプ２８にゲツターサポート３９を介し
てフアンネル３３内面の導電被膜３７に当接する
ように設けられたゲツタ４０などからなつてい
る。 That is, a panel 32 has a phosphor screen 31 on the inner surface of which is regularly deposited dot-shaped or band-shaped phosphor layers that emit light in red, green, and blue colors when electron beams strike the panel, and a funnel 33 is attached to this panel 32. The electron gun assembly 21 is connected to the net 34 via the
1, an anode terminal 38 for applying an anode voltage to a conductive film 37 deposited on the inner surface of the funnel 33, and a convergence cap 28. The getter 40 is provided so as to come into contact with the conductive coating 37 on the inner surface of the funnel 33 via a getter support 39.
この様な構造のカラー受像管を動作させる場
合、陽極電圧としての25kV乃至30kVの高電圧が
陽極端子３８、導電被膜３７、バルブスペーサ３
０を介してコンバーゼンスカツプ２８に印加さ
れ、更に、最終加速電極としての第４グリツド２
７の抵抗体からなる第２の電極素子２７ｂを介し
て導電体からなる第１の電極素子２７ａに印加さ
れる。また、第３グリツド２６には、この陽極電
圧の20％乃至30％程度の電圧が印加され、この第
３グリツド２６と第１の電極素子２７ａ間に主電
子レンズ部が形成される。この時陰極２３、第１
グリツド２４、第２グリツド２５及び第３グリツ
ド２６間には所謂３極部を形成する比較的低い電
圧が印加される。即ち、電子銃構体２１に於て第
４グリツド２７の第１の電極素子２７ａと第３グ
リツド２６両電極間の電位差が最も大きく約
20kVとなつている。 When operating a color picture tube with such a structure, a high voltage of 25 kV to 30 kV is applied as an anode voltage to the anode terminal 38, the conductive coating 37, and the valve spacer 3.
0 to the convergence cup 28, and is further applied to the fourth grid 2 as the final accelerating electrode.
The voltage is applied to the first electrode element 27a made of a conductor through the second electrode element 27b made of a resistor. Further, a voltage of about 20% to 30% of this anode voltage is applied to the third grid 26, and a main electron lens portion is formed between the third grid 26 and the first electrode element 27a. At this time, the cathode 23, the first
A relatively low voltage is applied between grid 24, second grid 25 and third grid 26, forming a so-called triode. That is, in the electron gun assembly 21, the potential difference between the first electrode element 27a of the fourth grid 27 and both electrodes of the third grid 26 is the largest and approximately
It is set to 20kV.
前述のカラー受像管をカラーテレビジヨン装置
に組込み稼動するとき、コンバーゼンスカツプ２
８、第２の電極素子２７ｂを介して第１の電極素
子２７ａに陽極電圧が印加され、第１の電極素子
２７ａと第３グリツド２６間に主電子レンズが形
成され、蛍光面３１上に電子ヒームを集束する
が、種々の原因からカラー受像管の管内放電が、
特に第３グリツド２６と第１の電極素子２７ａ間
に発生すると、抵抗部材からなる第２の電極素子
２７ｂにより導電部材からなる第１の電極素子２
７ａの電位を低下させることができ、放電電流を
抑制することが可能となる。この場合第２の電極
素子２７ｂの抵抗値は約400Ω程度にすることが
好ましく、この第２の電極素子２７ｂを構成する
抵抗部材としてはシリカガラスやセラミツクスに
Fez03，Mn0zまたはCuz０などの金属酸化物のう
ち、少なくとも１種を含ませたものなどが使用さ
れる。 When the color picture tube described above is incorporated into a color television device and operated, the convergence cup 2
8. An anode voltage is applied to the first electrode element 27a via the second electrode element 27b, a main electron lens is formed between the first electrode element 27a and the third grid 26, and electrons are emitted on the phosphor screen 31. Although the beam is focused, discharge inside the color picture tube can be caused by various reasons.
Particularly, when a problem occurs between the third grid 26 and the first electrode element 27a, the second electrode element 27b made of a resistive member causes the first electrode element 2 made of a conductive member to
The potential of 7a can be lowered, and the discharge current can be suppressed. In this case, the resistance value of the second electrode element 27b is preferably about 400Ω, and the resistance member constituting the second electrode element 27b is made of silica glass or ceramics.
A material containing at least one metal oxide such as Fe z 0 3 , Mn 0 z or Cu z 0 is used.
また第２の電極素子２７ｂを抵抗部材で作つて
あるので、管内放電のない時は、コンバーゼンス
カツプ２８、第２の電極素子２７ｂは第１の電極
素子２７ａと同一電位であり、電子ビームに対し
ては不所望な影響がない。 In addition, since the second electrode element 27b is made of a resistive material, when there is no discharge in the tube, the convergence cup 28 and the second electrode element 27b are at the same potential as the first electrode element 27a, so that they are not exposed to the electron beam. There are no undesirable effects.
更に、電子銃構体２１はカラー受像管のネツク
３４内に装着されているので、ゲツタ４０の飛散
によつても第２の電極素子２７ｂにBaなどが被
着されることがなく、最初に定められた抵抗値を
そのまま持続することが可能である。 Furthermore, since the electron gun assembly 21 is installed in the neck 34 of the color picture tube, Ba or the like will not be deposited on the second electrode element 27b even if the getter 40 is scattered, and the It is possible to maintain the same resistance value.
前述した実施例ではバイポテンシヤル形電子銃
構体について説明したが、これに限定されるもの
ではなく、他の電子銃構体、例えば、ユニポテン
シヤル形、トライポテンシヤル形、QPF形など
の最終加速電極にそのまま適用されることは説明
するまでもない。 In the above embodiment, a bipotential type electron gun structure was explained, but the present invention is not limited to this, and the present invention is applicable to other electron gun structures such as unipotential type, tripotential type, QPF type, etc. There is no need to explain that this applies.
前述のように、本発明の電子銃構体はカラー受
像管の管内放電による放電電流を抑制することが
出来るので、カラーテレビジヨン受像機の過電流
による損害を防止するのに極めて有効であり、そ
の工業的価値は極めて大である。 As mentioned above, the electron gun assembly of the present invention can suppress the discharge current caused by the discharge inside the color picture tube, so it is extremely effective in preventing damage to color television receivers due to overcurrent. The industrial value is extremely large.
第１図は従来の電子銃構体の側面図、第２図は
第１図の電子銃構体を内装したカラー受像管の説
明用断面図、第３図は本発明の電子銃構体の一実
施例の側面図、第４図は第３図の電子銃構体を内
装したカラー受像管の説明用断面図である。
１，２１……電子銃構体、３，２３……陰極、
４，２４……第１グリツド、５，２５……第２グ
リツド、６，２６……第３グリツド、７，２７…
…第４グリツド、２７ａ……第１の電極素子、２
７ｂ……第２の電極素子、１１，３１……蛍光
体、１７，３７……導電被膜、１９，３９……ゲ
ツタサポート、２０，４０……ゲツタ。
FIG. 1 is a side view of a conventional electron gun assembly, FIG. 2 is an explanatory sectional view of a color picture tube incorporating the electron gun assembly of FIG. 1, and FIG. 3 is an embodiment of the electron gun assembly of the present invention. and FIG. 4 is an explanatory sectional view of a color picture tube incorporating the electron gun structure of FIG. 3. 1, 21... Electron gun structure, 3, 23... Cathode,
4, 24...first grid, 5,25...second grid, 6,26...third grid, 7,27...
...Fourth grid, 27a...First electrode element, 2
7b... Second electrode element, 11, 31... Phosphor, 17, 37... Conductive coating, 19, 39... Getter support, 20, 40... Getter.
Claims (1)
電極を含む複数個の電極を有し、電子ビームを射
出するようになされた電子銃構体に於いて、前記
最終加速電極が導電部材からなる第１の電極素子
と、所定の抵抗値を有する抵抗部材からなる第２
の電極素子とから構成され、前記コンバーゼンス
カツプに前記第２の電極素子を介して前記第１の
電極素子が連接されてなることを特徴とする電子
銃構体。1. In an electron gun assembly having a plurality of electrodes including a final accelerating electrode connected to a convergence cup and configured to emit an electron beam, the final accelerating electrode is a first electrode element made of a conductive member. and a second resistive member made of a resistive member having a predetermined resistance value.
an electron gun assembly, characterized in that the first electrode element is connected to the convergence cup via the second electrode element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9611079A JPS5622031A (en) | 1979-07-30 | 1979-07-30 | Electron gun structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9611079A JPS5622031A (en) | 1979-07-30 | 1979-07-30 | Electron gun structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5622031A JPS5622031A (en) | 1981-03-02 |
| JPS6311742B2 true JPS6311742B2 (en) | 1988-03-15 |
Family
ID=14156243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9611079A Granted JPS5622031A (en) | 1979-07-30 | 1979-07-30 | Electron gun structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5622031A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0239331U (en) * | 1988-08-31 | 1990-03-16 |
-
1979
- 1979-07-30 JP JP9611079A patent/JPS5622031A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0239331U (en) * | 1988-08-31 | 1990-03-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5622031A (en) | 1981-03-02 |
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