JPH02100244A - Electron beam generating device - Google Patents
Electron beam generating deviceInfo
- Publication number
- JPH02100244A JPH02100244A JP63254008A JP25400888A JPH02100244A JP H02100244 A JPH02100244 A JP H02100244A JP 63254008 A JP63254008 A JP 63254008A JP 25400888 A JP25400888 A JP 25400888A JP H02100244 A JPH02100244 A JP H02100244A
- Authority
- JP
- Japan
- Prior art keywords
- cathode electrode
- linear cathode
- electron beam
- support means
- linear
- 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 title claims abstract description 30
- 238000004804 winding Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims description 14
- 230000005855 radiation Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 6
- 239000010953 base metal Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 241000544061 Cuculus canorus Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Solid Thermionic Cathode (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はカラーテレビジョン、計算機などの端末デイス
プレィ等に用いる表示装置の電子ビーム発生装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electron beam generating device for a display device used in a terminal display such as a color television or a computer.
従来の技術
第３図は特願昭６０−８５１３６号出願に示された表示
装置に用いられている電子ビーム発生装置の図である。Prior Art FIG. 3 is a diagram of an electron beam generator used in a display device disclosed in Japanese Patent Application No. 85136/1980.
絶縁基盤１１の表面には導電性薄膜によりストライプ状
に電子ビーム取り出しスイッチング電極１２が形成され
ている。線状カソード電極１３は、振動が発生すると画
像表示に影響を与えるため、振動を防ぐ目的で前記取り
出しスイッチング電極１２のストライブの間の絶縁面部
に対応して前記線状カソード電極１３に当接するように
線状カソード電極支持手段１４が配設されている。この
線状カソード電極支持手段１４には精度・耐熱性・絶縁
性等が要求されるため金属板にエツチング等で穴部を形
成した後アルミナ等の耐熱性絶縁材料でコーティングし
た構成になっている。前記線状カソード電極１３は直線
状の芯線１３−ａの周りにスパイラル状巻線１３−ｂを
施し、巻線間に酸化物放射材料１３−Ｃを塗゛布した構
成である。Electron beam extraction switching electrodes 12 are formed in stripes on the surface of the insulating base 11 using a conductive thin film. The linear cathode electrode 13 is brought into contact with the linear cathode electrode 13 corresponding to the insulating surface between the stripes of the take-out switching electrode 12 in order to prevent vibration, since the occurrence of vibration affects the image display. A linear cathode electrode support means 14 is disposed in this manner. This linear cathode electrode support means 14 is required to have precision, heat resistance, insulation, etc., so it is constructed by forming holes in a metal plate by etching, etc., and then coating it with a heat-resistant insulating material such as alumina. . The linear cathode electrode 13 has a structure in which a spiral winding 13-b is provided around a linear core wire 13-a, and an oxide radiation material 13-C is applied between the windings.
以上のような電子ビーム発生装置の構成において、線状
カソード電極１３を高温に加熱し熱電子を放出させ、電
子ビーム取り出し電極１５及びスイツチング電極１２に
所定の電位を与えることにより電子ビームを取り出し電
極１５側へ移動させるものである。In the configuration of the electron beam generator as described above, the linear cathode electrode 13 is heated to a high temperature to emit thermoelectrons, and the electron beam is extracted by applying a predetermined potential to the electron beam extraction electrode 15 and the switching electrode 12. 15 side.
発明が解決しようとする課題
この様な従来構成では、表示装置を使用する際に前記線
状カソード電極１３にはヒーター電流のｏｎ−ｏｆｆを
行なうため、それに伴って熱膨張により前記線状カソー
ド電極１３は伸縮する。前記線状カソード電極１３の架
張の一端はバネになっているため、この伸縮はバネのス
トロークで吸収され従って前記線状カソード電極１３は
常にたわむことなく架張される。Problems to be Solved by the Invention In such a conventional configuration, when a display device is used, a heater current is turned on and off to the linear cathode electrode 13, and accordingly, the linear cathode electrode 13 is heated due to thermal expansion. 13 expands and contracts. Since one end of the linear cathode electrode 13 is a spring, this expansion and contraction is absorbed by the stroke of the spring, so that the linear cathode electrode 13 is always stretched without bending.
ここで前記線状カソード電極１３は振動防止のために前
記線状カソード支持手段１４に当接し、ているのである
が、第３図に示すように当接部の長さ：Ｌがスパイラル
巻ピッチ：Ｐに比べて大きい場合、例えば第４図（ａ）
に示すように支持手段１４の当接部が線状カソード電極
スパイラル巻線間にはまり込みそこに塗布しである電子
放射性材料のはがれを引き起こし電子ビーム発生のむら
を生じさせる。また前記線状カソード電極１３は熱伸縮
の際、線状カソード電極支持手段１４と相対位置変動を
起こすのであるが、第４図（ｂ）に示すようにように「
ひっかかる」という状態が発生し、前記線状カソード電
極１３のたわみや前記線状カソード電極支持手段当接部
のエッヂの欠は等事態に至る。Here, the linear cathode electrode 13 is brought into contact with the linear cathode support means 14 to prevent vibration, and as shown in FIG. 3, the length of the contact part: L is the spiral winding pitch. : If it is larger than P, for example, Fig. 4(a)
As shown in FIG. 2, the contact portion of the support means 14 gets stuck between the linear cathode electrode spiral windings, causing the electron emissive material applied thereto to peel off, resulting in uneven generation of electron beams. Furthermore, when the linear cathode electrode 13 undergoes thermal expansion and contraction, the relative position of the linear cathode electrode supporting means 14 changes, as shown in FIG. 4(b).
This may lead to a situation where the linear cathode electrode 13 is bent or the edge of the linear cathode electrode support means is missing.
前記線状カソード電極１３のたわみによる位置ズレは電
子ビームの取り出しの不均一を生じさせ、またエッヂの
欠けは前記線状カソード電極支持手段１４の表面の絶縁
膜を削り取り、地金と前記線状カソード電極１３との導
通発生となり電子ビーム取り出し不可となってしまう。Misalignment due to bending of the linear cathode electrode 13 causes uneven extraction of electron beams, and chipping of the edges scrapes the insulating film on the surface of the linear cathode electrode supporting means 14, causing the base metal and the linear cathode electrode to become uneven. Electrical conduction with the cathode electrode 13 occurs, making it impossible to extract the electron beam.
本発明は、上記従来の技術の課題を解消させるためにな
されたものであり、線状カソード電極のスパイラル巻線
ピッチと支持手段の当接部長さの関係を特定することに
より上記課題を解決することを目的としている。The present invention has been made to solve the above-mentioned problems of the conventional technology, and solves the above-mentioned problems by specifying the relationship between the spiral winding pitch of the linear cathode electrode and the length of the contact portion of the support means. The purpose is to
課題を解決するための手段
本発明は、電子ビーム取り出し電極と、芯線の周囲にス
パイラル状巻線を施し巻線閏に酸化物放射材料を塗布し
た構造の線状カソード電極と、前記線状カソード電極の
一部に所定幅当接する当接部を複数箇所有する線状カソ
ード電極支持手段を備え、前記線状カソード電極のスパ
イラル状巻線９巻ピッチが、前記線状カソード電極と前
記線状カソード電極支持手段の当接部の当接幅より小さ
いことを特徴とする電子ビーム発生装置である。Means for Solving the Problems The present invention provides an electron beam extraction electrode, a linear cathode electrode having a structure in which a core wire is spirally wound and an oxide emitting material is applied to the winding thread, and the linear cathode A linear cathode electrode supporting means having a plurality of abutting portions that abut a part of the electrode by a predetermined width is provided, and a spiral winding pitch of 9 turns of the linear cathode electrode is arranged between the linear cathode electrode and the linear cathode. The electron beam generating device is characterized in that the contact width is smaller than the contact width of the contact portion of the electrode support means.
作用
上記構成によれば、線状カソード電極のスパイラル巻線
ピッチは線状カソード電極支持手段の当接部長さより小
さくしているので、線状カソード電極が熱伸縮により線
状カソード電極支持手段と相対位置変動を起こしても支
持手段当接部が線状カソード電極スパイラル巻線間には
まり込むことはなく「ひっかかり」も発生することはな
い。従って酸化物電子放射性物質のはがれや線状カソー
ド電極のたわみやエッヂの欠けによる支持手段地金との
導通発生等の問題を防ぐことができその結果安定した電
子ビームの取り出しを行なうことができ良好な高品質な
画像を安定して表示することが可能となった。Effect According to the above configuration, the spiral winding pitch of the linear cathode electrode is made smaller than the length of the contact portion of the linear cathode electrode support means, so that the linear cathode electrode is moved relative to the linear cathode electrode support means due to thermal expansion and contraction. Even if the position changes, the support means abutting portion will not get stuck between the linear cathode electrode spiral windings, and no "catch" will occur. Therefore, it is possible to prevent problems such as peeling of the oxide electron radioactive material, bending of the linear cathode electrode, or occurrence of conduction with the base metal of the supporting means due to bending or chipping of the edges, and as a result, stable electron beam extraction can be achieved. This makes it possible to stably display high-quality images.
実施例 以下本発明の実施例を図面を参照しながら説明する。Example Embodiments of the present invention will be described below with reference to the drawings.
第１図および第２図は本発明の電子ビーム発生装置の一
実施例における要部拡大図および斜視図である。絶縁基
盤１の表面には導電性薄膜によりストライブ状に電子ビ
ーム取り出しスイッチング電極２が形成されている。線
状カソード電極３は、振動が発生すると画像表示に影響
を与えるため、振動を防ぐ目的で前記取り出しスイッチ
ング電極２のストライブの間の絶縁面部に対応して前記
線状カソード電極３に当接するように線状カソード電極
支持手段４が配設されている。この線状カソード電極支
持手段４には精度・耐熱性・絶縁性等が要求されるため
金属板にエツチング等で穴部を形成した後アルミナ等の
耐熱性絶縁材料でコーティングした構成になっている。FIGS. 1 and 2 are an enlarged view and a perspective view of essential parts of an embodiment of the electron beam generator of the present invention. Electron beam extraction switching electrodes 2 are formed in stripes on the surface of the insulating substrate 1 using a conductive thin film. The linear cathode electrode 3 is brought into contact with the linear cathode electrode 3 corresponding to the insulating surface between the stripes of the take-out switching electrode 2 for the purpose of preventing vibration, since vibration will affect the image display. A linear cathode electrode support means 4 is disposed in this manner. This linear cathode electrode support means 4 is required to have precision, heat resistance, insulation, etc., so it is constructed by forming holes in a metal plate by etching, etc., and then coating it with a heat-resistant insulating material such as alumina. .
前記線状カソード電極３は直線状の芯線３−ａの周りに
スパイラル状巻線３−ｂを施し、巻線間に酸化物放射材
料３−Ｃを塗布した構成である。ここで前記スパイラル
状巻線の巻線ピッチ：Ｐは前記線状カソード電極支持手
段当接部長さ：Ｌより小さく設定している。The linear cathode electrode 3 has a structure in which a spiral winding 3-b is provided around a linear core wire 3-a, and an oxide radiation material 3-C is applied between the windings. Here, the winding pitch P of the spiral winding is set smaller than the length L of the abutting portion of the linear cathode electrode support means.
以上のような電子ビーム発生装置の構成においてその動
作を説明する。本電子ビーム発生装置は高真空の装置あ
るいは容器のなかで動作する。前記線状カソード電極３
に通電すると前記線状カソード電極３は温度上昇し電子
を発生するようになる。前記電子ビーム取り出しスイッ
チング電極２に前記線状カソード電極３より低い電位を
与えると前記線状カソード電極３から出た電子６は電気
的反発力により前記取り出し電極５側へ移動しようとす
る。一方、前記取り出し電極５の電位を前記線状カソー
ド電極３より高いものにしてやると前記取り出し電極５
側に前記電子６は吸引かつ加速され電子ビームが形成さ
れる。The operation of the electron beam generator having the above configuration will be explained. The present electron beam generator operates in a high vacuum device or container. The linear cathode electrode 3
When energized, the temperature of the linear cathode electrode 3 increases and it begins to generate electrons. When a potential lower than that of the linear cathode electrode 3 is applied to the electron beam extraction switching electrode 2, the electrons 6 emitted from the linear cathode electrode 3 tend to move toward the extraction electrode 5 due to electrical repulsion. On the other hand, if the potential of the extraction electrode 5 is set higher than that of the linear cathode electrode 3, the extraction electrode 5
The electrons 6 are attracted and accelerated to form an electron beam.
以上の一連の動作において前記線状カソード電極３は加
熱の０Ｎ−ＯＦＦにより前記線状カソード電極支持手段
４当接部と当接しつつ伸縮する。In the above series of operations, the linear cathode electrode 3 expands and contracts while coming into contact with the abutting portion of the linear cathode electrode support means 4 as the heating is turned on and off.
しかしながら上記構成によれば、前期線状カソード電極
３のスパイラル巻線ピッチは線状カソード電極支持手段
４の当接部長さより小さくしているので、支持手段４当
接部が線状カソード電極３のスパイラル巻線間にはまり
込むことはなく、電子放射性材料のはがれることはない
。また、線状カソード電極３が熱伸縮により線状カソー
ド電極支持手段４と相対位置変動を起こしても「ひっか
かり」も発生することはない。従って線状カソード電極
３のたわみや支持手段４当接部エッヂの欠けによる支持
手段４の地金との導通発生等の問題を防ぐことができ以
上の結果安定した電子ビームの取り出しを行なう、こと
ができ高品質で良好な画像の表示が可能となる。However, according to the above configuration, the spiral winding pitch of the linear cathode electrode 3 is made smaller than the length of the abutting part of the linear cathode electrode supporting means 4, so that the abutting part of the supporting means 4 is connected to the linear cathode electrode 3. It will not get stuck between the spiral windings and the electron emissive material will not come off. Further, even if the linear cathode electrode 3 changes its position relative to the linear cathode electrode supporting means 4 due to thermal expansion and contraction, "catch" does not occur. Therefore, problems such as conduction with the base metal of the support means 4 due to bending of the linear cathode electrode 3 or chipping of the edge of the contact portion of the support means 4 can be prevented, and as a result, a stable electron beam can be extracted. This makes it possible to display high quality and good images.
発明の効果
本発明によれば、線状カソード電極のスパイラル巻線間
に塗布した酸化物電子放射材料のはがれが生じない。ま
た熱伸縮の際、線状カソード電極支持手段の当接部と線
状カソード電極スパイラル巻線との間にｒひっかかり」
が発生することもなく、従って線状カソード電極のたわ
みやエッヂの欠けによる支持手段地金との導通発生等の
問題を防ぐことができる。以上の結果安定した電子ビー
ムの取り出しを行なうことができる。Effects of the Invention According to the present invention, the oxide electron emitting material applied between the spiral windings of the linear cathode electrode does not peel off. Also, during thermal expansion and contraction, r gets caught between the contact part of the linear cathode electrode support means and the linear cathode electrode spiral winding.
Therefore, it is possible to prevent problems such as occurrence of conduction with the base metal of the supporting means due to bending of the linear cathode electrode or chipping of the edge. As a result of the above, stable electron beam extraction can be performed.
第１図は本発明の実施例の電子ビーム発生装置の要部拡
大図、第２図は同は電子ビーム発生装置の斜視図、第３
図および第４図（ａ）、 （ｂ）は従来の電子ビーム
発生装置の要部拡大図である。
１・・・絶縁基盤、２・・・電子ビーム取り出しスイッ
チング電極、３・・・線状カソード電極、３−ａ・・・
芯線、 ３−ｂ・・・スパイラル巻線、３−ｃ・・・酸
化物電子放射材料、４・・・線状カソード電極支持手段
、５・・・電子ビーム取り出し電極
代理人の氏名 弁理士 粟野重孝 はか１名第 １ 図
４・・・線ズ犬カッ−）’＊掻支持手段第
図
第
図FIG. 1 is an enlarged view of main parts of an electron beam generator according to an embodiment of the present invention, FIG. 2 is a perspective view of the electron beam generator, and FIG.
FIG. 4 and FIGS. 4(a) and 4(b) are enlarged views of main parts of a conventional electron beam generator. DESCRIPTION OF SYMBOLS 1... Insulating base, 2... Electron beam extraction switching electrode, 3... Linear cathode electrode, 3-a...
Core wire, 3-b... Spiral winding, 3-c... Oxide electron emitting material, 4... Linear cathode electrode support means, 5... Name of electron beam extraction electrode representative Patent attorney Awano Shigetaka Haka1 person 1 Figure 4... Lines dog cuckoo)' *Scratching support means Figure Figure
Claims (1)
巻線を施し巻線間に酸化物放射材料を塗布した構造の線
状カソード電極と、前記線状カソード電極の一部に所定
幅当接する当接部を複数箇所有する線状カソード電極支
持手段を備え、前記線状カソード電極のスパイラル状巻
線の巻ピッチが、前記線状カソード電極と前記線状カソ
ード電極支持手段の当接部の当接幅より小さいことを特
徴とする電子ビーム発生装置。an electron beam extraction electrode; a linear cathode electrode having a structure in which a spiral winding is applied around a core wire and an oxide radiation material is applied between the windings; and an abutment that abuts a part of the linear cathode electrode over a predetermined width. a linear cathode electrode supporting means having a plurality of parts, the winding pitch of the spiral winding of the linear cathode electrode being equal to the contact width of the abutting part of the linear cathode electrode and the linear cathode supporting means; An electron beam generator characterized by being smaller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63254008A JPH02100244A (en) | 1988-10-07 | 1988-10-07 | Electron beam generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63254008A JPH02100244A (en) | 1988-10-07 | 1988-10-07 | Electron beam generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02100244A true JPH02100244A (en) | 1990-04-12 |
Family
ID=17258979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63254008A Pending JPH02100244A (en) | 1988-10-07 | 1988-10-07 | Electron beam generating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02100244A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH052974A (en) * | 1991-06-24 | 1993-01-08 | Matsushita Electric Works Ltd | Electrostatic relay |
-
1988
- 1988-10-07 JP JP63254008A patent/JPH02100244A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH052974A (en) * | 1991-06-24 | 1993-01-08 | Matsushita Electric Works Ltd | Electrostatic relay |
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