公开(公告)号：US06641450B2

公开(公告)日：2003-11-04

申请号：US09842786

申请日：2001-04-27

Applicant: Sung-hwan Moon ,  Dong-hee Han ,  Seung-kwon Han

Inventor： Sung-hwan Moon ,  Dong-hee Han ,  Seung-kwon Han

IPC: H01J902

CPC classification number: H01J9/04 ,  H01J1/142

Abstract: A cathode for an electron tube and a preparing method therefor are provided. In the cathode for an electron tube having a base metal and an electron-emitting material layer, the particle size of the micro structure of the surface of the base metal is controlled to be in the range of 3 to 50 &mgr;m. The cathode for an electron tube has an excellent effect of diffusing intermediate products generated during the operation of the cathode, and is capable of consistently supplying a diffusion path of a reducing agent. Also, the cut off drift rate can be reduced, thereby attaining a long life span characteristic.

Abstract translation: 提供了一种电子管的阴极及其制备方法。 在具有贱金属和电子发射材料层的电子管的阴极中，将母体表面的微结构的粒径控制在3〜50μm的范围内。 用于电子管的阴极具有极好的扩散在阴极操作期间产生的中间产物的效果，并且能够一致地提供还原剂的扩散路径。 此外，可以减少切断漂移率，从而获得长寿命特性。

公开(公告)号：US06600257B2

公开(公告)日：2003-07-29

申请号：US09951866

申请日：2001-09-13

Applicant: Georg Friedrich Gaertner ,  Detlef Raasch

Inventor： Georg Friedrich Gaertner ,  Detlef Raasch

IPC: H01J1142

CPC classification number: H01J1/142

Abstract: A cathode ray tube is provided with at least one oxide cathode including a cathode carrier with a cathode base of a cathode metal and a cathode coating of an electron-emitting material with oxide particles. The oxide particles contain an alkaline earth oxide selected from the group formed by the oxides of calcium, strontium, and barium, doped with an oxide doping in a quantity ranging from 120 to maximally 500 ppm of an oxide selected from the oxides of scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium. The electron-emitting material has an electric conductance of 3*10−3 &OHgr;−1 cm−1 to 12.5*10−3 &OHgr;−1 cm−1.

Abstract translation: 阴极射线管设置有至少一个氧化物阴极，其包括具有阴极金属阴极基体的阴极载体和具有氧化物颗粒的电子发射材料的阴极涂层。 氧化物颗粒含有选自由钙，锶和钡的氧化物形成的基团中的碱土金属氧化物，其掺杂的氧化物掺杂量为120至最大500ppm，氧化物选自钪，钇的氧化物 镧，铈，镨，钕，钐，铕，钆，铽，镝，钬，铒，ium，镱和镥。 电子发射材料的电导率为3×10-3欧米伽-1厘米-1至12.5×10-3欧米加-1厘米-1。

公开(公告)号：US20020070651A1

公开(公告)日：2002-06-13

申请号：US09951866

申请日：2001-09-13

Inventor： Georg Friedrich Gaertner ,  Detlef Raasch

IPC: H01J001/14 ,  H01J019/06

CPC classification number: H01J1/142

Abstract: A cathode ray tube provided with at least one oxide cathode comprising a cathode carrier with a cathode base of a cathode metal and a cathode coating of an electron-emitting material with oxide particles, said oxide particles containing an alkaline earth oxide, selected from the group formed by the oxides of calcium, strontium and barium, doped with an oxide doping in a quantity ranging from 120 to maximally 500 ppm of an oxide selected from the oxides of scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium dysprosium, holmium, erbium, thulium, ytterbium and lutetium, and the electron-emitting material has an electric conductance of 3*10null3 nullnull1 cmnull1 to 12.5*10null3 nullnull1 cmnull1. The invention also relates to an oxide cathode.

Abstract translation: 具有至少一个氧化物阴极的阴极射线管包括阴极载体和阴极金属的阴极基体和具有氧化物颗粒的电子发射材料的阴极涂层，所述氧化物颗粒含有碱土金属氧化物，所述碱土金属氧化物选自 由钙，锶和钡的氧化物形成，掺杂氧化物掺杂量为120至最大500ppm的氧化物，其选自钪，钇，镧，铈，镨，钕，钐，铕， 钆，铽镝，钬，铒，ium，镱和镥，电子发射材料的电导率为3 * 10-3欧米茄 - 1厘米-1至12.5 * 10-3欧米茄-1厘米-1。 本发明还涉及氧化物阴极。

公开(公告)号：US20020008453A1

公开(公告)日：2002-01-24

申请号：US09755121

申请日：2001-01-08

Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA

Inventor： Takuya Ohira ,  Hiroyuki Teramoto ,  Keiji Fukuyama ,  Kiyoshi Saitou

IPC: H01J001/00 ,  H01J001/05

CPC classification number: H01J1/26 ,  H01J1/142

Abstract: A cathode for an electron tube provided with a base containing at least one kind of reducing agent, a metal layer whose main component is tungsten formed on the base, and an electron emission material layer whose main component is an alkaline-earth metal oxide including barium formed thereon, deformation of the base in operation is controlled by composing the metal layer with a porous metal layer and limiting the thickness and the porosity of the metal layer. As a result, it is possible to achieve a cathode for an electron tube applicable to a cathode-ray tube for a display in which the cutoff voltage is liable to change.

Abstract translation: 一种电子管的阴极，其具有包含至少一种还原剂的基底，在基底上形成主要成分为钨的金属层，以及主要成分是包含钡的碱土金属氧化物的电子发射材料层 通过在多孔金属层上构成金属层，限制金属层的厚度和孔隙率，可以控制基体在工作中的变形。 结果，可以实现适用于其中截止电压易于改变的显示器的阴极射线管的电子管阴极。

公开(公告)号：US6140753A

公开(公告)日：2000-10-31

申请号：US63943

申请日：1998-04-21

Applicant: Gyu-Nam Joo ,  Jong-Seo Choi ,  Yoon-Chang Kim

Inventor： Gyu-Nam Joo ,  Jong-Seo Choi ,  Yoon-Chang Kim

IPC: H01J1/142 ,  H01J1/20

CPC classification number: H01J1/142

Abstract: The present invention includes a cathode for an electron gun having a base metal mainly composed of nickel and containing one kind of reducing element at least, a metal layer mainly composed of nickel or nickel-zirconium on the upper side of the base metal, and an electron emitting material layer containing alkaline earth metal oxide including barium at least on the upper side of the metal layer. The metal layer is formed by spreading nickel or nickel-zirconium on the base metal and heating it or by adhering nickel or nickel-zirconium powder thereon to have particle smaller than that of the base metal, to increase its life cycle under a high current density load by ensuring a diffusion route of reducing element steadily for good generation of free radical barium atom. In another aspect, the present invention proposes a cathode for an electron gun further having a second electron emitting material layer containing both of lanthanum compound and magnesium compound or lanthanum-magnesium mixed compound in alkaline earth metal oxide containing barium at least on the upper side of the electron emitting material layer.

Abstract translation: 本发明包括一种用于电子枪的阴极，其具有主要由镍构成的贱金属和至少含有一种还原元素的金属层，在贱金属的上侧主要由镍或镍 - 锆构成的金属层，以及 至少在金属层的上侧含有包含钡的碱土金属氧化物的电子发射材料层。 金属层通过在基底金属上铺展镍或镍 - 锆并加热或通过在其上粘附镍或镍 - 锆粉末而具有小于母体金属的颗粒而形成，以在高电流密度下增加其寿命周期 通过确保还原元素的扩散途径稳定地产生自由基钡原子来实现负载。 另一方面，本发明提出了一种电子枪用阴极，该阴极还具有含有镧化合物和镁化合物或镧 - 镁混合化合物的第二电子发射材料层，所述第二电子发射材料层至少含有钡的碱土金属氧化物 电子发射材料层。

公开(公告)号：US6033280A

公开(公告)日：2000-03-07

申请号：US988316

申请日：1997-12-10

Applicant: Tetsuro Ozawa ,  Yoshiki Hayashida ,  Hiroshi Sakurai

Inventor： Tetsuro Ozawa ,  Yoshiki Hayashida ,  Hiroshi Sakurai

IPC: H01J29/04 ,  H01J1/142 ,  H01J1/316 ,  H01J9/04

CPC classification number: H01J9/042 ,  H01J1/142 ,  H01J1/316

Abstract: An emitter material for a CRT comprises mixed crystal or solid solution of at least two kinds of alkaline earth metal carbonate, wherein at least one alkaline earth metal carbonate is dispersed or separated in the mixed crystal or solid solution. The alkaline earth metal carbonate, which is an emitter material for the CRT, is coated onto the base metal and thermally decomposed in a vacuum to from an emitter of an alkaline earth metal. This emitter, which is proper for a larger screen size, high brightness and high resolution CRT, can be provided with enough life characteristics even under the operating condition of the emission current density of 2A/cm.sup.2.

Abstract translation: 用于CRT的发射体材料包括至少两种碱土金属碳酸盐的混合晶体或固溶体，其中至少一种碱土金属碳酸盐在混晶或固溶体中分散或分离。 作为CRT的发射体材料的碱土金属碳酸盐被涂覆在贱金属上，并在真空中从碱土金属的发射极热分解。 即使在2A / cm2的发射电流密度的工作条件下，这种适用于较大屏幕尺寸，高亮度和高分辨率CRT的发射器也可提供足够的寿命特性。

公开(公告)号：US5925976A

公开(公告)日：1999-07-20

申请号：US966113

申请日：1997-11-07

Applicant: Yoshiki Hayashida ,  Tetsuro Ozawa ,  Hiroshi Sakurai ,  Masaki Kawasaki

Inventor： Yoshiki Hayashida ,  Tetsuro Ozawa ,  Hiroshi Sakurai ,  Masaki Kawasaki

IPC: H01J1/142 ,  H01J1/14

CPC classification number: H01J1/142

Abstract: A cathode for an electron tube is described that has little deterioration of emission current after long operation, is used as a long-life oxide cathode even with high current density in a CRT, and is economical. An emissive material is adhered onto a substrate that is positioned at one opening of a cylindrical sleeve having a built-in heater coil and that includes nickel as a main component by thermally decomposing carbonate including an alkaline earth metal oxide and at least one element selected from the group consisting of titanium, nickel, zirconium, vanadium, niobium and tantalum.

Abstract translation: 描述了一种用于电子管的阴极，其在长时间运行后几乎没有发射电流的劣化，甚至在CRT中具有高电流密度也被用作长寿命氧化物阴极，并且是经济的。 将发光材料附着到位于具有内置加热器线圈的圆柱形套筒的一个开口处的基底上，并且包括通过热分解包含碱土金属氧化物的碳酸盐和至少一种选自以下的元素的镍作为主要成分： 由钛，镍，锆，钒，铌和钽组成的组。

公开(公告)号：US5744905A

公开(公告)日：1998-04-28

申请号：US916747

申请日：1997-08-19

Applicant: Vivek Mehrotra ,  Hemant S. Betrabet ,  David Robert Woodward ,  Thomas O. Leyh ,  Susan McGee

Inventor： Vivek Mehrotra ,  Hemant S. Betrabet ,  David Robert Woodward ,  Thomas O. Leyh ,  Susan McGee

IPC: H01J1/142 ,  H01J61/067 ,  H01J1/62 ,  H01J17/20 ,  H01J61/12 ,  H01J63/04

CPC classification number: H01J61/0677 ,  H01J1/142

Abstract: The present invention is directed to new electrode structures for use in fluorescent lamps in which a tungsten base structure is provided with electron emissive materials including one or more of barium titanate, barium zirconate, barium strontium zirconate, barium cerium oxide, barium tantalate, and barium strontium yittrium oxide. Amounts of MgO may be added to improve or change emitter properties. A composite electrode structure can be formed by way of coating a tungsten coil with a slurry of this material, or providing powdered mixtures of both the electron emissive material and tungsten material and sintering this powdered material into a high density composite electrode structure.

Abstract translation: 本发明涉及用于荧光灯的新的电极结构，其中钨基结构设置有电子发射材料，该电子发射材料包括钛酸钡，锆酸钡，锆酸锶钡，钡钡钡和钡钡中的一种或多种 氧化锶钇。 可以加入MgO的量以改善或改变发射体性质。 可以通过用该材料的浆料涂覆钨线圈或者提供电子发射材料和钨材料的粉末混合物并将该粉末材料烧结成高密度复合电极结构来形成复合电极结构。

公开(公告)号：US5708321A

公开(公告)日：1998-01-13

申请号：US629872

申请日：1996-04-10

Applicant: Kyu-nam Joo ,  Jong-seo Choi ,  Kwi-seuk Choi ,  Geun-bae Kim ,  Sang-won Lee

Inventor： Kyu-nam Joo ,  Jong-seo Choi ,  Kwi-seuk Choi ,  Geun-bae Kim ,  Sang-won Lee

IPC: H01J1/14 ,  H01J1/04 ,  H01J1/142 ,  H01J1/20 ,  H01J1/13

CPC classification number: H01J1/142

Abstract: A cathode for an electron tube includes a base metal containing nickel as a major component and an electron-emissive material layer which is formed on the base metal and comprises an alkaline earth metal oxide including barium oxide as its main component, wherein the electron-emissive material layer further comprises a lanthanum-magnesium-manganese oxide. The cathode of the present invention is fully interchangeable with conventional oxide cathodes and has a longer lifetimes and an improved cut-off drift characteristic.

Abstract translation: 电子管的阴极包括含有镍作为主要成分的贱金属和形成在贱金属上的包含以氧化钡为主要成分的碱土金属氧化物的电子发射材料层，其中电子发射 材料层还包含镧 - 镁 - 锰氧化物。 本发明的阴极与常规氧化物阴极完全可互换，并且具有更长的寿命和更好的截止漂移特性。

公开(公告)号：US5684357A

公开(公告)日：1997-11-04

申请号：US569706

申请日：1995-12-08

Applicant: Kwang-Min Lee ,  Kyu-Nam Joo ,  Jong-Seo Choi ,  Geun-Bae Kim ,  Kwi-Seuk Choi ,  Sang-Won Lee

Inventor： Kwang-Min Lee ,  Kyu-Nam Joo ,  Jong-Seo Choi ,  Geun-Bae Kim ,  Kwi-Seuk Choi ,  Sang-Won Lee

IPC: H01J9/04 ,  C01G23/00 ,  H01J1/14 ,  H01J1/142 ,  H01J1/20

CPC classification number: C01G23/006 ,  H01J1/142

Abstract: A thermion emitting oxide cathode comprising a metal cap and a cathode sleeve, the metal cap being coated with a thermion emitting material layer containing a barium-based alkaline earth metal, wherein the thermion emitting material layer is made of a titanate of the barium-based alkaline earth metal. The thermion emitting oxide cathode is made by mixing a titanium tetrachloride (TiCl.sub.4) with an aqueous solution of barium-strontium-calcium dichloride �(Ba--Sr--Ca)Cl.sub.2 !, dropping the mixture into an oxalate solution of 80.degree. C., thereby precipitating a barium-strontium-calcium titanate hydrate �(Ba--Sr--Ca)TiO(C.sub.2 O.sub.4).sub.2.4H.sub.2 O!, and treating the precipitated barium-strontium-calcium titanate hydrate at a temperature of 500.degree. to 700.degree. C. to remove a plurality of water molecules, thereby producing a suspension of barium-strontium-calcium titanate �(Ba--Sr--Ca)TiO.sub.3 !.

Abstract translation: 一种包含金属盖和阴极套的热发射氧化物阴极，金属帽涂覆有含有钡基碱土金属的热离子发射材料层，其中热电子发射材料层由钡基碱金属的钛酸盐 碱土金属。 通过将四氯化钛（TiCl 4）与二氯化锶 - 二氯化钙[（Ba-Sr-Ca）Cl 2]的水溶液混合，将该混合物倒入80℃的草酸盐溶液中， 从而使钡 - 锶 - 钛酸钙水合物[（Ba-Sr-Ca）TiO（C2O4）·2.4H2O]析出，并在500〜700℃的温度下处理沉淀的钛酸钡 - 锶 - 钛酸钙水合物，以除去 多个水分子，从而产生钛酸锶 - 钛酸钙[（Ba-Sr-Ca）TiO 3]的悬浮液。