JPH02106666U - - Google Patents
Info
- Publication number
- JPH02106666U JPH02106666U JP1541889U JP1541889U JPH02106666U JP H02106666 U JPH02106666 U JP H02106666U JP 1541889 U JP1541889 U JP 1541889U JP 1541889 U JP1541889 U JP 1541889U JP H02106666 U JPH02106666 U JP H02106666U
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- electron emission
- electron
- emission surface
- support
- 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
- 238000010894 electron beam technology Methods 0.000 claims 1
- 230000035699 permeability Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Description
第１図乃至第３図はこの考案の実施例の説明図
で、第１図はその一実施例であるカラー受像管の
電子銃に用いられる陰極の構成図、第２図はカラ
ー受像管の構成図、第３図ａは比較のために示し
た従来の電子銃の動作説明図、同ｂは一実施例に
おける電子銃の動作説明図、第４図は電子銃の構
成を説明するために示した従来のバイポテンシヤ
ル型電子銃の構成図、第５図はその陰極の構成図
、第６図は陰極の電子放出面に電子誘導磁界を発
生させるように構成された公知の陰極の構成図で
ある。
２０……パネル、２３……蛍光体スクリーン（
ターゲツト）、２５……電子銃、２６……ストラ
ツプ、２７……陰極筒、２８……ベースメタル、
２９……陰極支持体、３０……電子放出面、３１
……ヒーター、３２……コイル（集束コイル）、
３８……クロスオーバー点、Ｋ……陰極、Ｇ１…
…第１グリツド、Ｇ２……第２グリツド、Ｇ３…
…第３グリツド、Ｇ４……第４グリツド。
Figures 1 to 3 are explanatory diagrams of an embodiment of this invention. Figure 1 is a configuration diagram of a cathode used in an electron gun of a color picture tube, which is one embodiment, and Figure 2 is a diagram of a cathode used in an electron gun of a color picture tube. 3A is an explanatory diagram of the operation of a conventional electron gun shown for comparison, FIG. 3B is an explanatory diagram of the operation of an electron gun in one embodiment, and FIG. FIG. 5 is a configuration diagram of the cathode of the conventional bipotential electron gun shown in FIG. It is. 20... Panel, 23... Phosphor screen (
target), 25...electron gun, 26...strap, 27...cathode tube, 28...base metal,
29... Cathode support, 30... Electron emission surface, 31
... Heater, 32 ... Coil (focusing coil),
38...Crossover point, K...Cathode, G1...
...First grid, G2...Second grid, G3...
...3rd grid, G4...4th grid.
Claims (1)
陰極の外側に同軸的に位置して上記陰極を支持す
る筒状の陰極支持体と、上記陰極からターゲツト
方向に順次位置して上記電子放出面からの電子放
出を制御する電極およびこの電極を通過した電子
ビームを上記ターゲツト上に集束する主レンズ構
成電極からなる複数個のグリツドとを有する電子
銃を具備し、 上記陰極支持体の一端が上記電子放出面よりも
上記陰極に隣接する第１グリツドに接近して位置
し、この陰極支持体の一端部外側に上記電子放出
面から放出される電子を集束する磁界を上記陰極
と上記第１グリツドとの間に形成する集束コイル
を配置するとともに、上記陰極を高透磁率材で構
成したことを特徴とする陰極線管。[Claims for Utility Model Registration] A cylindrical cathode with one end surface serving as an electron emitting surface, a cylindrical cathode support that is coaxially located outside the cathode and supports the cathode, and a cylindrical cathode support that supports the cathode, and an electron gun having a plurality of grids consisting of electrodes that are sequentially located in the direction of the electron emission surface to control electron emission from the electron emission surface and main lens-forming electrodes that focus the electron beam passing through the electrodes onto the target; one end of the cathode support is located closer to the first grid adjacent to the cathode than the electron emission surface, and electrons emitted from the electron emission surface are focused on the outside of the one end of the cathode support. A cathode ray tube characterized in that a focusing coil is disposed between the cathode and the first grid to form a magnetic field, and the cathode is made of a material with high magnetic permeability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1541889U JPH02106666U (en) | 1989-02-13 | 1989-02-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1541889U JPH02106666U (en) | 1989-02-13 | 1989-02-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02106666U true JPH02106666U (en) | 1990-08-24 |
Family
ID=31227459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1541889U Pending JPH02106666U (en) | 1989-02-13 | 1989-02-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02106666U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0721939A (en) * | 1991-12-30 | 1995-01-24 | Samsung Display Devices Co Ltd | Cathode-ray tube |
-
1989
- 1989-02-13 JP JP1541889U patent/JPH02106666U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0721939A (en) * | 1991-12-30 | 1995-01-24 | Samsung Display Devices Co Ltd | Cathode-ray tube |
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