JPH0132287Y2 - - Google Patents
Info
- Publication number
- JPH0132287Y2 JPH0132287Y2 JP17192379U JP17192379U JPH0132287Y2 JP H0132287 Y2 JPH0132287 Y2 JP H0132287Y2 JP 17192379 U JP17192379 U JP 17192379U JP 17192379 U JP17192379 U JP 17192379U JP H0132287 Y2 JPH0132287 Y2 JP H0132287Y2
- Authority
- JP
- Japan
- Prior art keywords
- electron gun
- aperture
- main lens
- cathode ray
- ray tube
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 11
- 230000004075 alteration Effects 0.000 claims description 2
- 238000010894 electron beam technology Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
本考案は陰極線管、特にフエースプレート内面
に垂直方向に縦長形状の螢光体ストライプを有す
る陰極線管に関するものである。[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a cathode ray tube, and particularly to a cathode ray tube having a vertically elongated phosphor stripe on the inner surface of a face plate.
(ロ) 従来の技術
第１図はビームインデツクス受像管の螢光内面
を示す図である。尚、ビームインデツクス受像管
は特公昭40−27864号に示される様によく知られ
ている。第１図は、垂直方向に縦長の三原色螢光
体ストライプＲ，Ｇ，Ｂが黒色のガードバンド１
を挾んで繰返し配されている状態を示しており、
一方第２図は陰極線管のネツク部２内部における
電子銃を模式的に示していて、３はカソード電
極、４は制御電極、５はアノード電極、６ａ，６
ｂは加速電極、７は集束電極であり、これらの各
電極にはそれぞれ所定の電圧がピン（図示せず）
を介して与えられるようになつている。(b) Prior Art FIG. 1 is a diagram showing the fluorescent inner surface of a beam index picture tube. Incidentally, the beam index picture tube is well known as shown in Japanese Patent Publication No. 27864/1973. Figure 1 shows a guard band 1 in which vertically elongated three-color phosphor stripes R, G, and B are black.
It shows how they are repeatedly placed in between,
On the other hand, FIG. 2 schematically shows the electron gun inside the network part 2 of the cathode ray tube, where 3 is a cathode electrode, 4 is a control electrode, 5 is an anode electrode, 6a, 6
b is an accelerating electrode, and 7 is a focusing electrode, each of which has a predetermined voltage connected to a pin (not shown).
It is now being given through.
ところで、電子ビーム８のスポツト８ａ径が第
１図に示すように大きくなると他の螢光体ストラ
イプをも同時に衝撃するので正確な色を再現する
ことができなくなるという欠点を有する。もつと
も、このような不都合に対し電子銃のカソード電
極３に近接する制御電極５のアパーチヤを縦長と
して対処することが提案されているが、十分では
ない。 By the way, if the diameter of the spot 8a of the electron beam 8 becomes large as shown in FIG. 1, it will impact other phosphor stripes at the same time, resulting in a disadvantage that accurate colors cannot be reproduced. However, it has been proposed to solve this problem by making the aperture of the control electrode 5 close to the cathode electrode 3 of the electron gun vertically long, but this is not sufficient.
(ハ) 考案が解決しようとする課題
又、一般に電子銃の主レンズの口径を大きくす
るとレンズの球面収差が小さくなり、従つて電子
ビームのスポツト径が小さくなるというのは良く
知られている。(c) Problems to be solved by the invention It is also well known that generally, when the diameter of the main lens of an electron gun is increased, the spherical aberration of the lens becomes smaller, and therefore the spot diameter of the electron beam becomes smaller.
しかるに電子銃を収納する陰極線管ネツク部の
管径が決められており、これにより制限された口
径の電子銃しか作れないのが現状である上に、テ
レビジヨン受像機の消費電力の軽減という点から
最近は36.5φネツク管から29φネツク管に変つて
きているので一層電子銃の口径に制限が課せられ
ることとなつている。 However, the tube diameter of the cathode ray tube neck that houses the electron gun is determined, and as a result, only electron guns with a limited caliber can be made. Recently, the 36.5φ network tube has been changed to a 29φ network tube, which has placed further restrictions on the caliber of the electron gun.
本考案は斯る点に墻み、電子銃の集束電極の口
径形状に一定の工夫を施すことにより好適な電子
ビームスポツトを得ることができるようにした陰
極線管を提案するものである。 The present invention takes this into consideration and proposes a cathode ray tube in which a suitable electron beam spot can be obtained by making certain changes to the aperture shape of the focusing electrode of the electron gun.
(ニ) 課題を解決するための手段
本考案の基本原理は電子ビーム集束用主レンズ
１０を三原色螢光体ストライプＲ，Ｇ，Ｂの方向
には従来と同程度の口径をもち、前記ストライプ
Ｒ，Ｇ，Ｂと直角方向には大きくすることにあ
る。(d) Means for Solving the Problems The basic principle of the present invention is that the main lens 10 for focusing the electron beam has the same aperture as the conventional one in the directions of the three primary color phosphor stripes R, G, and B; , G, and B in the direction perpendicular to them.
(ホ) 作用
幸い縦長形状の螢光体ストライプＲ，Ｇ，Ｂを
有する陰極線管においてはストライプ方向にはビ
ームスポツト径の制限はなくストライプに直角な
水平方向には良好なビームスポツトが要求される
ので前記直角方向にはレンズの口径を大きくし、
ストライプ方向には従来の如く小さくしておくこ
とができる。(e) Effect Fortunately, in cathode ray tubes having vertically elongated phosphor stripes R, G, and B, there is no limit to the beam spot diameter in the stripe direction, and a good beam spot is required in the horizontal direction perpendicular to the stripes. Therefore, in the perpendicular direction, the aperture of the lens is increased,
The stripe direction can be kept small as in the conventional case.
(ヘ) 実施例
電子銃では縦断面部分を模式的に顕した第３図
イに示すようにガラス製支持棒９ａ，９ｂによつ
て各電極４，５，６ａ，６ｂ，７が一体となつて
支持されているが、この支持棒９ａ，９ｂは上下
に配する。(F) Example In an electron gun, as shown in FIG. 3A, which schematically shows a vertical section, the electrodes 4, 5, 6a, 6b, and 7 are integrated by glass support rods 9a and 9b. The support rods 9a and 9b are arranged one above the other.
而して集束電極７の上下方向（ストライプ方
向）口径は従来と同程度に小さく、一方水平方向
（ストライプに直角な方向）についてはガラス棒
による制約がないので第３図ロに示すように集束
電極７の口径を隣接する加速電極６ａ，６ｂと共
に陰極線管のネツク部の内側にぎりぎりまで大き
くなして、この方向の収束用主レンズ１０径を第
１図のストライプ方向の主レンズ径に比し大きく
している。 Therefore, the aperture of the focusing electrode 7 in the vertical direction (stripe direction) is as small as the conventional one, while in the horizontal direction (direction perpendicular to the stripe) there is no restriction due to the glass rod, so that the focusing electrode 7 can be focused as shown in FIG. The aperture of the electrode 7 is made as large as possible along with the adjacent accelerating electrodes 6a and 6b inside the neck portion of the cathode ray tube, and the diameter of the converging main lens 10 in this direction is compared with the main lens diameter in the stripe direction in FIG. It's getting bigger.
１１はアノード電極５と制御電極４のアパーチ
ヤ１１ｂ，１１ａを示している。 Reference numeral 11 indicates apertures 11b and 11a of the anode electrode 5 and the control electrode 4.
このように実施例では制御電極４のアパーチヤ
１１ａは円形であるが、このアパーチヤを垂直方
向に縦長にすると効果が一層よくなる。即ち、電
子ビームのスポツト形状は一般に制御電極４のア
パーチヤ１１ａ形状に類似したものが発生するの
で、このビームが本考案による収束用主レンズ１
０によつてビームの水平方向について、厳格に規
制されると、そのビームスポツトは例えば原色再
生のときに所定の螢光体ストライプに隣接する他
の螢光体ストライプを衝撃することが全くなくな
り、極めて理想的なカラー陰極線管を実現するこ
とができる。 As described above, in the embodiment, the aperture 11a of the control electrode 4 is circular, but if the aperture is made vertically elongated, the effect will be even better. That is, since the spot shape of the electron beam is generally similar to the shape of the aperture 11a of the control electrode 4, this beam is
If the horizontal direction of the beam is strictly regulated by 0, the beam spot will never impact other phosphor stripes adjacent to a given phosphor stripe, for example during primary color reproduction; An extremely ideal color cathode ray tube can be realized.
(ト) 考案の効果
以上の通り本考案によれば収束用主レンズの口
径が上下方向と水平方向とで異なるような電子銃
構造としているので、好適な色再生を得ることが
できる。(G) Effects of the invention As described above, according to the invention, since the electron gun structure is such that the aperture of the main focusing lens is different in the vertical direction and the horizontal direction, suitable color reproduction can be obtained.
第１図は陰極線管のフエースプレート内面の螢
光体ストライプと従来のビームスポツトとの関係
を示す図である。第２図は電子銃を模式的に示す
図である。第３図は本考案の一実施例を示す図で
あり、イは上下方向断面を示す図、ロは右側面を
示す図、ハは水平方向断面を示す図である。第４
図はビームスポツトを示す図である。
Ｒ，Ｇ，Ｂ……三原色螢光体ストライプ、７…
…収束電極。
FIG. 1 is a diagram showing the relationship between a phosphor stripe on the inner surface of a face plate of a cathode ray tube and a conventional beam spot. FIG. 2 is a diagram schematically showing an electron gun. FIG. 3 is a diagram showing an embodiment of the present invention, in which A is a vertical cross-sectional view, B is a right side view, and C is a horizontal cross-sectional view. Fourth
The figure shows a beam spot. R, G, B...three primary color phosphor stripes, 7...
...Focusing electrode.
Claims (1)
螢光体ストライプＲ，Ｇ，Ｂを有する陰極線管に
おいて、 電子銃の主レンズ１０の、水平方向の口径を前
記垂直方向の口径より大きくして、前記水平方向
の前記主レンズ１０の収差を小さくするためにこ
の電子銃の前記主レンズ１０を形成する電極群６
ａ，７，６ｂの口径形状を前記螢光体ストライプ
Ｒ，Ｇ，Ｂと直角方向の口径が大きくなるように
したことを特徴とする陰極線管。[Claims for Utility Model Registration] In a cathode ray tube having vertically elongated phosphor stripes R, G, B on the inner surface of the face plate, the aperture in the horizontal direction of the main lens 10 of the electron gun is set in the vertical direction. The electrode group 6 forming the main lens 10 of this electron gun is made larger than the diameter of the main lens 10 of the electron gun in order to reduce the aberration of the main lens 10 in the horizontal direction.
A cathode ray tube characterized in that the aperture shapes of a, 7, and 6b are such that the apertures in the direction perpendicular to the phosphor stripes R, G, and B become larger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17192379U JPH0132287Y2 (en) | 1979-12-11 | 1979-12-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17192379U JPH0132287Y2 (en) | 1979-12-11 | 1979-12-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5689155U JPS5689155U (en) | 1981-07-16 |
| JPH0132287Y2 true JPH0132287Y2 (en) | 1989-10-03 |
Family
ID=29682739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17192379U Expired JPH0132287Y2 (en) | 1979-12-11 | 1979-12-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0132287Y2 (en) |
-
1979
- 1979-12-11 JP JP17192379U patent/JPH0132287Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5689155U (en) | 1981-07-16 |
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