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公开(公告)号：JPH08124476A
公开(公告)日：1996-05-17
申请号：JP2486595
申请日：1995-02-14
Applicant: SAMSUNG ELECTRONIC DEVICES
Inventor： SHIYU KEIKUSU , SAI SHIYOUSHIYO , KIN KONBAI , RI MITSUTOSHI , SAI KISHIYAKU
Abstract: PURPOSE: To provide a negative electrode for an electron tube which improves significantly shortening the life, which is a problem with existing oxide negative electrodes and, at the same time, can be manufactured by a method which is 100% compatible with a manufacturing process of the existing negative electrodes. CONSTITUTION: In a negative electrode for an electron tube wherein an electron emitting material layer 1 is formed on a metallic substrate 2 made of nickel as a principal component, the electron emitting layer 1 contains: a metallic oxide of alkaline earth which is obtained from the dissociation of a carbonate of alkaline earth metal containing barium as a principal component; and a La compound and a Mg compound, or a La-Mg compound. With this configuration, a manufacturing process of the electrode so described is 100% compatible with those for existing electrodes and further the life of the electrode is improved by over 15 to 20% from those of conventional oxide electrodes.
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公开(公告)号：JPH04259725A
公开(公告)日：1992-09-16
申请号：JP27234891
申请日：1991-10-21
Applicant: PHILIPS NV
Inventor： PETORASU YAKOBUSU ANTONIUSU MA
Abstract: PURPOSE: To enhance the initial radiation and lengthen the life by containing the specified ratio of the number of rare earth atoms to the number of alkali earth atoms in an electron radiation material, and uniformly distributing the rare earth atoms on the upper side of the radiation material layer. CONSTITUTION: A cathode 1 consists of a cap 7 essentially containing nickel and a cylindrical nichrome cathode shaft 3, and is covered with an electron radiation material layer 2 having an alkali earth metal oxide, barium, and a rare earth metal. The rate of the number of alkali earth metal atoms to the number of rare earth metal atoms in the radiation material is 10-500ppm, and the rare earth metal atoms are uniformly distributed on the upper side of a radiation material layer 2. By adding a small amount of rare earth metal to the layer 2 of the cathode having barium oxide and strontium oxide, the initial radiation is enhanced, and the life is lengthened.
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公开(公告)号：JPH03173036A
公开(公告)日：1991-07-26
申请号：JP30593990
申请日：1990-11-09
Applicant: SAMSUNG ELECTRONIC DEVICES
Inventor： TEI SHIYOUJIN , SAI SHIYOUSHIYO , RO KANTETSU , SHIYU KEIKUSU
Abstract: PURPOSE: To obtain a stable electron emitting characteristic even at a low temperature by forming an alloy thin film layer composed of scandium tungstate and W between an electron emitting substance and a porous metallic base body. CONSTITUTION: An alloy thin film layer composed of scandium tungstate and W is formed between an electron emitting substance and a porous metallic base body. A storage tank 3b and a sleeve 4b are formed of high melting point metal such as Mo and Ta, and the electron emitting substance 2b is a compression molding formed of barium calcium alminate, and the alloy thin film layer 6d is an alloy coating layer formed of scandium tungstate (Sc2 W3 O12 or Sc6 WO12 ) and W. Therefore, a stable and persistent thermoelectron can be emitted even at a low temperature through sufficient supply of scandium.
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公开(公告)号：JP5226921B2
公开(公告)日：2013-07-03
申请号：JP2001277549
申请日：2001-09-13
Applicant: コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ
Inventor： フリードリッヒ ゲルトナー ゲオルク , ラーシュ デトレフ
CPC classification number: H01J1/142
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公开(公告)号：JP2004510292A
公开(公告)日：2004-04-02
申请号：JP2002529795
申请日：2001-09-06
Inventor： ウィンダム エム ジョンストン , ゲオルグ エフ ゲルトナー , ペトルス アー エム ファン デル ハイデ
CPC classification number: H01J1/142
Abstract: 少なくとも１つの酸化物カソードを設けた陰極線管であって、この酸化物カソードが、カソード金属のカソードベース及び電子放出材料のカソードコーティングを有するカソード担体を具えて、この電子放出材料が、カルシウム、ストロンチウム、及びバリウムの酸化物から成る群から選択したアルカリ土類酸化物の酸化物粒子と、スカンジウム、イットリウム、及びランタノイドの酸化物から成る群から選択した酸化物の第１粒径分布を有する酸化物粒子と、スカンジウム、イットリウム、及びランタノイドの酸化物から成る群から選択した酸化物の第２粒径分布を有する酸化物粒子との粒子−粒子複合材料を含む。 本発明は酸化物カソードにも関するものである。
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Patent Agency Ranking16.发明专利
公开(公告)号：JP2003346639A
公开(公告)日：2003-12-05
申请号：JP2003118088
申请日：2003-04-23
Applicant: Thomson Licensing Sa , トムソン ライセンシング ソシエテ アノニム
Inventor： RICAUD JEAN-LUC , PROUDHON GERARD
CPC classification number: H01J1/142
Abstract: PROBLEM TO BE SOLVED: To enable to drastically limit drift of voltage cutoff and to maintain a good maximum emission performance in a DC mode and a pulse mode. SOLUTION: With the oxide cathode for the electron gun including a substrate supporting a porous cathode emission coating (1) based on one or more alkaline earth oxides and a so-called emission area (12) and a non-emission surrounding area (11), an average density of the coating in the emission area (12) is larger than that of the same in the non-emission area (11), and an average thickness of the coating in the emission area (12) is smaller than that of the same in the non-emission area (11). COPYRIGHT: (C)2004,JPO
Abstract translation: 要解决的问题：为了能够极大地限制电压截止的漂移并且在DC模式和脉冲模式下保持良好的最大发射性能。 解决方案：用于电子枪的氧化物阴极包括基于一个或多个碱土氧化物和所谓的发射区域（12）和非发射周围区域支撑多孔阴极发射涂层（1）的衬底 （11）中，发光区域（12）中的涂层的平均密度大于非发光区域（11）中的涂层的平均密度，并且发光区域（12）中的涂层的平均厚度较小 比非排放地区相同（11）。 版权所有（C）2004，JPO
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公开(公告)号：JP2001357770A
公开(公告)日：2001-12-26
申请号：JP2001127732
申请日：2001-04-25
Applicant: THOMSON LICENSING SA
Inventor： ROQUAIS JEAN-MICHEL , PORET FABIAN , LE DOZE REGINE , PAUL MARIE
Abstract: PROBLEM TO BE SOLVED: To provide a material of negative electrode to limit accumulation of a highly stable compound at a boundary surface between a base metal and an emission property layer in the negative electrode of a cathode-ray tube. SOLUTION: A nickel alloy, concerning the manufacturing of the negative electrode (2) of the cathode-ray tube, is made an alloy to contain magnesium and aluminum at a ratio selected so that the emission oxide layer (12) adheres well to a base metal cap (11) that is composed of this alloy.
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公开(公告)号：JP2000340096A
公开(公告)日：2000-12-08
申请号：JP34696599
申请日：1999-12-06
Applicant: TDK CORP
Inventor： HAMADA MUNEMITSU , TAKEISHI AKIRA , TAKAHASHI MAKOTO , MATSUOKA MASARU , YODOGAWA MASATADA , HARADA HIROSHI
IPC: H01J1/14 , H01J1/142 , H01J1/15 , H01J1/20 , H01J1/28 , H01J1/30 , H01J17/04 , H01J29/04 , H01J31/12 , H01J37/06 , H01J61/067
Abstract: PROBLEM TO BE SOLVED: To suppress evaporation in discharge and enhance resistance to ion sputtering by using electron emission material containing a first component of at least one element selected from Ba, St, and Ca, and a second component of at least one element selected from Ta, Zr, Nb, Ti, and Hf, and also containing oxynitride perovskite. SOLUTION: A desirable element of a first component is Ba, and Ba is preferable to occupy 70-100 atomic percent of the first component. A desirable element of a second component is Ta, and Ta is preferable to occupy 70-100 atomic percent of the second component. When molar ratio of the first component is represented by X and that of the second component is represented by Y, based on the total amount of the first component and the second component, the relation of 0.8
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公开(公告)号：JP2000173441A
公开(公告)日：2000-06-23
申请号：JP13182999
申请日：1999-05-12
Applicant: SAMSUNG SDI CO LTD
Inventor： KIN JUNCHO , CHOI JONG-SEO , JOO GYU-NAM
Abstract: PROBLEM TO BE SOLVED: To provide a cathode for an electron gun capable of realizing a long service life in high current density by ensuring a diffusion path of a reducing element to be particularly included in a base metal to disperse an intermediate layer to smoothly generate a free barium atom in the cathode for the electron gun used for a cathode ray tube. SOLUTION: A cathode for an electron gun comprises a base metal 60 including nickel as major component and at least a kind of a reducing element. The cathode further comprises a upper metal layer 62 which is formed by the particle formed by recrystallization in upper surface of the base metal 60. The cathode furthermore comprises an electron emission material layer 80, formed on an upper portion of the upper metal layer 62, including alkaline earth metal oxide including at least barium.
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