CN1258204C - 一种冷阴极电子枪 - Google Patents
一种冷阴极电子枪 Download PDFInfo
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- CN1258204C CN1258204C CNB021152276A CN02115227A CN1258204C CN 1258204 C CN1258204 C CN 1258204C CN B021152276 A CNB021152276 A CN B021152276A CN 02115227 A CN02115227 A CN 02115227A CN 1258204 C CN1258204 C CN 1258204C
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- 239000010406 cathode material Substances 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 239000002041 carbon nanotube Substances 0.000 claims description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 2
- 239000012212 insulator Substances 0.000 claims 3
- 239000000463 material Substances 0.000 claims 1
- 238000012216 screening Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002113 nanodiamond Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/021—Electron guns using a field emission, photo emission, or secondary emission electron source
-
- 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
- H01J29/481—Electron guns using field-emission, photo-emission, or secondary-emission electron source
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/029—Schematic arrangements for beam forming
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Cold Cathode And The Manufacture (AREA)
- Solid Thermionic Cathode (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
本发明公开了一种冷阴极电子枪。其在底座上固定有一冷阴极材料做成的冷阴极,在冷阴极的正上方有一网状栅极,在网状栅极的正上方有一圆孔状的聚焦极,上述电极均通过支架相互绝缘地固定在底座上。聚焦极的正上方还可以设置一网状屏蔽极,屏蔽极通过屏蔽极支架固定在底座上。屏蔽极的采用主要看应用的场合,在像素管这种比较小的器件之中需要,在冷光源的应用中可以不用。本发明所述的冷阴极电子枪结构简单,性能优良,主要应用于电子源、冷阴极电光源和像素管,也可以应用于其他具有同类要求的场合。
Description
技术领域
本发明涉及一种冷阴极电子枪,尤其涉及冷阴极电子枪的结构。
背景技术
目前所用的热阴极电子枪,由于阴极需要在较高温度下工作,工作时阴极必须连续加热,所以功耗大,不能瞬间启动,结构复杂。冷阴极具有电流大,功耗小,效率高,瞬间启动,响应速度快等优点,在显示器件、电光源和微波器件等方面有重要的应用。但是,冷阴极使用时对工作电压的一致性、可控性和电绝缘等方面有特别的要求。
发明内容
本发明提供一种结构简单,性能优良的冷阴极电子枪。
本发明所述的冷阴极电子枪,在底座上固定有一冷阴极材料做成的冷阴极,在冷阴极的正上方有一网状栅极,在网状栅极的正上方有一圆孔状的聚焦极,上述电极均通过支架相互绝缘地固定在底座上。
聚焦极的正上方还可以设置一网状屏蔽极,屏蔽极通过屏蔽极支架固定在底座上。
屏蔽极的采用主要看应用的场合,在像素管这种比较小的器件之中需要,在冷光源的应用中可以不用。
本发明所述的冷阴极电子枪,主要应用于电子源、冷阴极电光源和像素管,也可以应用于其他具有同类要求的场合。该电子枪的工作电压低,一致性好,发射电子束均匀性好,束斑的直径可通过控制聚焦极的孔径大小来进行控制。其工作原理是,在栅极上加一定的电压,冷阴极在此电压的作用下发射电子,大部分电子透过栅极的网孔,并被加有一定电压的聚焦极聚焦后,透过起屏蔽作用的网状屏蔽极出射出来。本发明所述的上述结构的冷阴极电子枪应用于冷阴极电光源、像素管等,测试了它的各项性能。测试所得的各项性能的指标如下:耐压范围最大为50KV/mm、电流密度范围为0-1mA/mm2,工作真空范围小于1*10-4Pa,工作温度范围-100至300摄氏度。具体应用的指标以冷阴极像素管为例,采用一种碳纳米管冷阴极材料的像素管的工作指标如下:栅电极工作电压1000V,工作电流为0至250μA,工作真空为5*10Pa-5,最大亮度17000cd/m2,寿命大于10万小时。
附图说明
图1为本发明所述的电子枪的结构示意图;
图2为采用本发明所述的电子枪实现的冷阴极像素管工作状况图;
图3为本发明所述的电子枪的I-V曲线图;
图4为采用了本发明所述的电子枪的像素管的亮度与电流、电压的关系图。
具体实施方式
如图1所示,电子枪由底座a、阴极架b、网状栅极d、网状栅极支架c、圆形孔状的聚焦极f、聚焦极支架e、网状屏蔽极h以及网状屏蔽极支架g组成。
底座采用平面电绝缘材料,在本实施例中采用平面陶瓷底座,在底座安装固定阴极支架b、阴极支架b为一圆形的金属片,冷阴极材料通过机械固定、焊接或粘接的方式固定在该金属片b上形成冷阴极。冷阴极材料可是尖锥阵列、复合材料、碳纳米管、金刚石或类金刚石薄膜等冷阴极材料。网状栅极d通过网状栅极支架c固定在冷阴极b的正上方;在网状栅极d的正上方有一圆孔形的聚焦极f,聚焦极f的正上方有一网状屏蔽极h,网状屏蔽h极通过网状屏蔽极支架g固定在底座a上。各电极引出线i从底座a的下部引出。
冷阴极像素管是超大屏幕显示屏的组屏元件。冷阴极像素管具有微功耗、高亮度、色彩逼真、低成本等一系列优点,主要应用于大型场所的广告或视屏显示。冷阴极像素管要求电子枪的输出电流大,工作电压低,一致性好和输出电子束均匀。采用上述结构,以一种碳纳米管冷阴极材料作为阴极的电子枪和荧光屏封接制成了冷阴极像素管。
图2为该冷阴极像素管的工作状况的图片,可以看到像素管工作时发光均匀,说明电子枪得出射电子束均匀。图3则给出不同电子枪的工作电压电流特性曲线,显示工作电压有较好的一致性。图4为像素管亮度与阴极工作电流和荧光屏电压的关系。在荧光屏电压为7千伏,阴极工作电流为250微安的条件下,像素管的亮度可以达到17000cd/m2。
Claims (3)
1.一种冷阴极电子枪,其特征在于:绝缘底座(a)上通过机械固定、焊接或粘接的方式固定有一冷阴极材料做成的冷阴极,在冷阴极(b)的正上方有一网状栅极(d),在网状栅极(d)的正上方有一圆孔状的聚焦极(f),上述电极分别通过支架(c,e)相互绝缘地固定在绝缘底座(a)上。
2.按权利要求1所述的冷阴极电子枪,其特征在于:聚焦极(f)的正上方有一网状屏蔽极(h),网状屏蔽极通过支架(g)固定在绝缘底座(a)上。
3.按权利要求1所述的冷阴极电子枪,其特征在于:所述的冷阴极(b)以碳纳米管为材料。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB021152276A CN1258204C (zh) | 2002-05-16 | 2002-05-16 | 一种冷阴极电子枪 |
AU2002357558A AU2002357558A1 (en) | 2002-05-16 | 2002-12-30 | A gun with a cold cathode |
US10/514,572 US20060163995A1 (en) | 2002-05-16 | 2002-12-30 | Gun with a cold cathode |
AT02807434T ATE404989T1 (de) | 2002-05-16 | 2002-12-30 | Kanone mit kalter kathode |
DE60228336T DE60228336D1 (de) | 2002-05-16 | 2002-12-30 | Kanone mit kalter kathode |
EP02807434A EP1508910B1 (en) | 2002-05-16 | 2002-12-30 | A gun with a cold cathode |
PCT/CN2002/000921 WO2003098657A1 (fr) | 2002-05-16 | 2002-12-30 | Pistolet a cathode froide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB021152276A CN1258204C (zh) | 2002-05-16 | 2002-05-16 | 一种冷阴极电子枪 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1379433A CN1379433A (zh) | 2002-11-13 |
CN1258204C true CN1258204C (zh) | 2006-05-31 |
Family
ID=4743524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB021152276A Expired - Lifetime CN1258204C (zh) | 2002-05-16 | 2002-05-16 | 一种冷阴极电子枪 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060163995A1 (zh) |
EP (1) | EP1508910B1 (zh) |
CN (1) | CN1258204C (zh) |
AT (1) | ATE404989T1 (zh) |
AU (1) | AU2002357558A1 (zh) |
DE (1) | DE60228336D1 (zh) |
WO (1) | WO2003098657A1 (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101335175B (zh) * | 2007-06-29 | 2010-05-26 | 清华大学 | 场发射像素管 |
CN102097265B (zh) * | 2010-12-31 | 2012-07-11 | 中国航天科技集团公司第五研究院第五一○研究所 | 一种增强电子束流均匀性的装置 |
CN103606505B (zh) * | 2013-11-26 | 2016-02-03 | 电子科技大学 | 一种利用微波调制的冷阴极电子枪 |
CN103606503B (zh) * | 2013-11-26 | 2016-06-29 | 电子科技大学 | 一种微波调制相位可控的多电子注冷阴极电子枪 |
CN104934280B (zh) * | 2015-05-26 | 2017-05-10 | 电子科技大学 | 一种外置式栅控冷阴极阵列电子枪 |
CN104810225B (zh) * | 2015-05-26 | 2017-11-10 | 电子科技大学 | 一种栅极外置式冷阴极电子源阵列及其构成的电子枪 |
CN106158551B (zh) * | 2016-07-08 | 2017-11-21 | 中山大学 | 自对准聚焦结构的纳米线冷阴极电子源阵列及其制作方法 |
CN113140434A (zh) * | 2020-01-17 | 2021-07-20 | 北京大学 | 一种片上微型电子源及制造方法、电子源系统、电子设备 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994020975A1 (en) * | 1993-03-11 | 1994-09-15 | Fed Corporation | Emitter tip structure and field emission device comprising same, and method of making same |
JP2871579B2 (ja) * | 1996-03-28 | 1999-03-17 | 日本電気株式会社 | 発光装置およびこれに用いる冷陰極 |
CN2263400Y (zh) * | 1996-04-03 | 1997-09-24 | 东南大学 | 高亮度全彩色场致发射平板显示屏 |
US6255771B1 (en) * | 1997-12-04 | 2001-07-03 | Emagin Corporation | Flashover control structure for field emitter displays and method of making thereof |
JP3107036B2 (ja) * | 1998-03-20 | 2000-11-06 | 日本電気株式会社 | 冷陰極搭載電子管用電子銃 |
DE19824783A1 (de) * | 1998-06-03 | 1999-12-16 | Siemens Ag | Vorrichtung zur Formung eines Elektronenstrahls, Verfahren zur Herstellung der Vorrichtung und Anwendung |
US6250984B1 (en) * | 1999-01-25 | 2001-06-26 | Agere Systems Guardian Corp. | Article comprising enhanced nanotube emitter structure and process for fabricating article |
US6255768B1 (en) * | 1999-07-19 | 2001-07-03 | Extreme Devices, Inc. | Compact field emission electron gun and focus lens |
KR20010082591A (ko) * | 1999-12-21 | 2001-08-30 | 이데이 노부유끼 | 전자 방출 장치, 냉음극 전계 전자 방출 소자 및 그 제조방법, 및 냉음극 전계 전자 방출 표시 장치 및 그 제조 방법 |
-
2002
- 2002-05-16 CN CNB021152276A patent/CN1258204C/zh not_active Expired - Lifetime
- 2002-12-30 AT AT02807434T patent/ATE404989T1/de not_active IP Right Cessation
- 2002-12-30 US US10/514,572 patent/US20060163995A1/en not_active Abandoned
- 2002-12-30 EP EP02807434A patent/EP1508910B1/en not_active Expired - Lifetime
- 2002-12-30 DE DE60228336T patent/DE60228336D1/de not_active Expired - Lifetime
- 2002-12-30 WO PCT/CN2002/000921 patent/WO2003098657A1/zh active IP Right Grant
- 2002-12-30 AU AU2002357558A patent/AU2002357558A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO2003098657A1 (fr) | 2003-11-27 |
ATE404989T1 (de) | 2008-08-15 |
EP1508910A4 (en) | 2005-10-26 |
CN1379433A (zh) | 2002-11-13 |
DE60228336D1 (de) | 2008-09-25 |
AU2002357558A1 (en) | 2003-12-02 |
EP1508910B1 (en) | 2008-08-13 |
US20060163995A1 (en) | 2006-07-27 |
EP1508910A1 (en) | 2005-02-23 |
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