公开(公告)号：EP1617451A3

公开(公告)日：2007-10-17

申请号：EP05254406.1

申请日：2005-07-14

Applicant: NGK INSULATORS, LTD.

Inventor： Nanataki, Tsutomu, c/o Legal Affairs and I P Dept. ,  Yamaguchi, Hirofumi, Legal Affairs and I P Dept. ,  Kobayashi, Nobuyuki, Legal Affairs and I P Dept.

IPC: H01J1/304 ,  H01J9/02

CPC classification number: H01J1/312 ,  B82Y10/00 ,  H01J9/025 ,  H01J2201/306 ,  H01J2201/3125 ,  H01J2329/00

Abstract: A dielectric device of higher performance is provided. An electron emitter (10A) to which the dielectric device of the present invention is applied includes an emitter (12) formed by a dielectric, and an upper electrode (14) and a lower electrode (16) to which a drive voltage is applied for the purpose of electron emission. The emitter includes an upper layer (12c) formed from plural dielectric particles (12e), and a lower layer (12d) formed from plural dielectric particles, below the upper layer. The upper layer and/or lower layer are formed by aerosol deposition.

公开(公告)号：EP1826798A2

公开(公告)日：2007-08-29

申请号：EP07250608.2

申请日：2007-02-14

Applicant: NGK INSULATORS, LTD.

Inventor： Sato, Kei, Legal Affairs and I.P. Dept. ,  Hattori, Tetsuya, Legal Affairs and I.P. Dept. ,  Yamaguchi, Hirofumi, Legal Affairs and I.P. Dept. ,  Ozawa, Shuichi, Legal Affairs and I.P. Dept.

IPC: H01J1/312 ,  H01J1/30

CPC classification number: H01J1/312 ,  B82Y10/00 ,  H01J1/30 ,  H01J2201/306 ,  H01J2201/312

Abstract: Provided is a piezoelectric-film-type electron emitter of high durability exhibiting suppressed reduction in electron emission quantity, which reduction would otherwise occur with repeated use of the electron emitter. The electron emitter includes a substrate, a lower electrode, an emitter layer, and an upper electrode. The upper electrode has a plurality of openings, and an emitter section located on the top surface of the emitter layer is exposed through the openings to a reduced-pressure atmosphere. The electron emitter is configured so that when a pulse drive voltage Va is applied between the lower electrode and the upper electrode, electrons are accumulated on the emitter section, and then the electrons are emitted toward the reduced-pressure atmosphere. The emitter layer contains a primary component (i.e., a ferroelectric composition) and an additional component. The additional component contains a transition metal oxide of high oxidation number which can serve as an oxidizing agent by being converted into an oxide of the transition metal of lower oxidation number.

Abstract translation: 本发明提供一种高耐久性的压电薄膜型电子发射体，其显示抑制了电子发射量的减少，否则在重复使用电子发射体时会发生该减小。 电子发射器包括基板，下电极，发射极层和上电极。 上电极具有多个开口，并且位于发射极层的顶表面上的发射极部分通过开口暴露于减压气氛。 电子发射器被配置为使得当在下电极和上电极之间施加脉冲驱动电压Va时，电子在发射极部分上积聚，然后电子朝着减压气氛发射。 发射极层含有主要成分（即铁电组合物）和附加成分。 附加组分含有高氧化数的过渡金属氧化物，它可以通过转化成较低氧化数的过渡金属的氧化物而用作氧化剂。

公开(公告)号：EP1617449A2

公开(公告)日：2006-01-18

申请号：EP05254402.0

申请日：2005-07-14

Applicant: NGK INSULATORS, LTD.

Inventor： Nanataki, Tsutomu ,  Yamaguchi, Hirofumi ,  Kobayashi, Nobuyuki

IPC: H01J1/304

CPC classification number: H01J1/312 ,  B82Y10/00 ,  H01J9/025 ,  H01J2201/306 ,  H01J2201/3125 ,  H01J2329/00

Abstract: A higher performance dielectric device is provided. An electron emitter (10A) applying the dielectric device according to the present invention includes an emitter formed of a dielectric (12), and an upper electrode (14) and a lower electrode (16) to which a drive voltage is applied to cause electron emission. The emitter includes plural dielectric particles (12e), and plural dielectric particles of smaller particle size (12f) which are filled in spaces between the plural dielectric particles. The emitter having the aforesaid construction is formed by an aerosol deposition method or a sol impregnation method.

Abstract translation: 提供了更高性能的电介质器件。 施加根据本发明的电介质器件的电子发射器（10A）包括由电介质（12）和上电极（14）和下电极（16）形成的发射极，施加驱动电压以引起电子 排放。 发射极包括多个电介质颗粒（12e），以及填充在多个电介质颗粒之间的空间中的多个较小粒径的电介质颗粒（12f）。 具有上述结构的发射体通过气溶胶沉积法或溶胶浸渍法形成。

公开(公告)号：EP1600995A1

公开(公告)日：2005-11-30

申请号：EP05010336.5

申请日：2005-05-12

Applicant: National University Corporation Nagoya University

Inventor： Morita, Shinzo

IPC: H01J1/30

CPC classification number: H01J1/30 ,  H01J2201/306

Abstract: A comb-shaped electrode (12) is formed on the main surface of a ferroelectric thin film (11) and a planer electrode (13) is formed on the rear surface of a ferroelectric thin film. Then, the property of the main surface of the ferroelectric thin film is converted into semi-conduction. Then, the assembly comprised of the ferroelectric thin film, the comb-shaped electrode and the planer electrode is disposed in a given atmosphere. Under the circumstance, a negative voltage is applied to the comb-shaped electrode to polarize the ferroelectric thin film, and a negative impulse voltage is applied to the planer electrode, thereby generating electron beams from the main surface of the ferroelectric thin film.

Abstract translation: 在铁电薄膜（11）的主表面上形成梳状电极（12），在铁电薄膜的背面形成有平面电极（13）。 然后，将铁电薄膜的主表面的性质转换成半导体。 然后，将铁电薄膜，梳状电极和平面电极组成的组件设置在给定的气氛中。 在这种情况下，向梳状电极施加负电压以极化铁电薄膜，并且对平面电极施加负的脉冲电压，从而从铁电薄膜的主表面产生电子束。

公开(公告)号：EP1630842B1

公开(公告)日：2009-07-29

申请号：EP05255199.1

申请日：2005-08-24

Applicant: NGK INSULATORS, LTD.

Inventor： Yamaguchi, Hirofumi, NGK Insulators, Ltd. ,  Sato, Kei, NGK Insulators, Ltd. ,  Kashiwaya, Toshikatsu, NGK Insulators, Ltd.

IPC: H01J1/312

CPC classification number: H01J1/312 ,  B82Y10/00 ,  C04B35/493 ,  C04B2235/3206 ,  C04B2235/3213 ,  C04B2235/3227 ,  C04B2235/3251 ,  C04B2235/3256 ,  C04B2235/3258 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3298 ,  C04B2235/76 ,  C04B2235/762 ,  C04B2235/764 ,  C04B2235/765 ,  H01J1/32 ,  H01J2201/306 ,  H01J2201/3125 ,  H01J2329/00

公开(公告)号：EP1637508A2

公开(公告)日：2006-03-22

申请号：EP05255211.4

申请日：2005-08-24

Applicant: NGK INSULATORS, LTD.

Inventor： Yamaguchi, Hirofumi, NGK Insulators, Ltd. ,  Sato, Kei, NGK Insulators, Ltd. ,  Kashiwaya, Toshikatsu, NGK Insulators, Ltd.

IPC: C04B35/491 ,  H01J1/30 ,  H01J1/304 ,  H01J1/312

CPC classification number: H01J1/312 ,  B82Y10/00 ,  C04B35/493 ,  C04B2235/3206 ,  C04B2235/3213 ,  C04B2235/3251 ,  C04B2235/3256 ,  C04B2235/3258 ,  C04B2235/3267 ,  C04B2235/3279 ,  C04B2235/3298 ,  H01J2201/306 ,  H01J2201/3125 ,  H01J2329/00

Abstract: Provided is a dielectric composition which, when applied to an electron emitter, enables suppression of reduction of electron emission quantity with passage of time. The dielectric composition contains, as a primary component, a PMN-PZ-PT ternary solid solution composition represented by the following formula Pb x Bi p (Mg y/3 Nb 2/3 ) a Ti b-z M z Zr c O 3 [wherein x, p, and y satisfy the following relations: 0.85 ≤ x ≤ 1.05, 0.02 ≤ p ≤ 0.1, and 0.8 ≤ y ≤ 1.0; a, b, and c are decimal numbers falling within a region formed by connecting the following five points (0.550, 0.425, 0.025), (0.550, 0.150, 0.300), (0.100, 0.150, 0.750), (0.100, 0.525, 0.375), and (0.375, 0.425, 0.200); z satisfies the following relation: 0.02 ≤ z ≤ 0.10; and M is at least one element selected from among Nb, Ta, Mo, and W], and contains Ni in an amount of 0.05 to 2.0 wt.% as reduced to NiO.

Abstract translation: 提供一种电介质组合物，当被施加到电子发射体时，可以抑制电子发射量随时间的减少。 电介质组合物含有以下式Pb x Bi p（Mg y / 3 Nb 2/3）a Ti bz M z Zr c O 3表示的PMN-PZ-PT三元固溶体组合物作为主要成分[其中 x，p和y满足以下关系：0.85‰¤x‰¤1.05,0.02‰‰‰0.1和0.8‰¤‰¤1.0; a，b，c是分别连接以下五个点（0.550,0.425,0.025），（0.550,0.150,0.300），（0.100,0.150,0.750），（0.100,0.525,0.375），（0.100,0.525,0.375）， ）和（0.375,0.425,0.200）; z满足以下关系：0.02‰¤z‰¤0.10; 并且M是选自Nb，Ta，Mo和W中的至少一种元素，并且以NiO计含有0.05-2.0重量％的Ni。

公开(公告)号：EP1617450A2

公开(公告)日：2006-01-18

申请号：EP05254405.3

申请日：2005-07-14

Applicant: NGK INSULATORS, LTD.

Inventor： Nanataki, Tsutomu ,  Yamaguchi, Hirofumi ,  Tanaka, Ritsu

IPC: H01J1/304

CPC classification number: H01J1/312 ,  B82Y10/00 ,  H01J1/32 ,  H01J2201/306 ,  H01J2201/3125 ,  H01J2329/00

Abstract: A dielectric device of higher performance is provided. An electron emitter (12), to which the dielectric device is applied is provided with: an emitter including a dielectric; and an upper electrode (14) and a lower electrode (16) to which drive voltage is applied in order to emit electrons. The emitter is formed by the aerosol deposition method or the sol impregnation method, and the surface roughness of the upper surface thereof is controlled in the range from 0.1 to 3 in Ra.

Abstract translation: 提供了更高性能的电介质器件。 施加电介质器件的电子发射器（12）设置有：包括电介质的发射体; 以及为了发射电子而施加驱动电压的上电极（14）和下电极（16）。 通过气溶胶沉积法或溶胶浸渍法形成发射体，将其上表面的表面粗糙度控制在Ra为0.1〜3的范围内。

公开(公告)号：EP0883897B1

公开(公告)日：2002-06-26

申请号：EP97952713.2

申请日：1997-12-10

Applicant: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH

Inventor： VOLLKOMMER, Frank ,  HITZSCHKE, Lothar

IPC: H01J61/54 ,  H01J1/30

CPC classification number: B82Y10/00 ,  H01J1/312 ,  H01J61/545 ,  H01J2201/306

Abstract: Disclosed is a cold cathode (1) for use in discharge lamps, including in discharge lamps (6) operating with a dielectrically hindered discharge, comprising two electroconducive electrodes facing each other, between which a ferro-electric material is sandwiched. At least one of the electrodes presents one or more openings. When the cathode is operating, a voltage of quickly alternating polarity is applied to both electrodes, thereby freeing electrons on the surface of the ferro-electric material. The working voltage of the discharge lamp causes an acceleration of said electrons, which pass through the openings towards the anode (8) and are used for igniting the discharge lamp and keeping it in operating mode.

公开(公告)号：EP0847249A1

公开(公告)日：1998-06-17

申请号：EP96929018.0

申请日：1996-08-22

Applicant: Interventional Innovations Corporation

Inventor： CHORNENKY, Victor, I. ,  FORMAN, Michael, R.

IPC: A61N5 ,  H01J35

CPC classification number: A61N5/1001 ,  A61N5/1002 ,  A61N2005/1003 ,  H01J35/32 ,  H01J2201/304 ,  H01J2201/306

Abstract: A catheter for emitting radiation is disclosed, comprising a catheter shaft (104), and an x-ray unit (102) attached to the distal end of the catheter shaft. The x-ray unit comprises an anode (112), and a cathode (110) coupled to an insulator (108) to define a vacuum chamber (106). The cathode is preferably a field emission cathode of graphite or graphite coated with titanium carbide, for example. The anode is preferably tungsten, and the insulator is preferably pyrolytic boron nitride. The x-ray unit is preferably coupled to a voltage source through a coaxial cable. The anode is preferably a heavy metal such as tungsten. The cathode may also be a ferroelectric material. The x-ray unit can have a diameter less than about 4mm, and a length less than about 15 mm. Methods of use of the catheter are also disclosed. The catheter of the present invention can be used to irradiate the site of an angioplasty procedure to prevent restenosis. It can also be used to treat other conditions in any vessel, lumen or cavity of the body.

公开(公告)号：JP2008053023A

公开(公告)日：2008-03-06

申请号：JP2006227367

申请日：2006-08-24

Applicant: Ngk Insulators Ltd ,  日本碍子株式会社

Inventor： SATO KEI ,  HATTORI TETSUYA ,  YAMAGUCHI HIROFUMI

IPC: H01J1/312 ,  H01J31/12

CPC classification number: H01J31/127 ,  B82Y10/00 ,  H01J1/312 ,  H01J2201/306 ,  H01J2201/3125 ,  Y10T428/12667

Abstract: PROBLEM TO BE SOLVED: To provide a dielectric element composed by preventing degradation of an element characteristic by repeated use; and an electron emission element. SOLUTION: This electron emission element 120 being an example of this dielectric element is structured to be operated by applying a predetermined drive electric field to an emitter layer 123. The emitter layer 123 is a dielectric layer containing a PMN-PT-PZ three-component solid solution-based composition as a main constituent, and is formed so that its Curie temperature Tc (°C) satisfies 60≤Tc≤150. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供通过反复使用防止元件特性劣化而构成的电介质元件; 和电子发射元件。 解决方案：作为该电介质元件的一个例子的该电子发射元件120被构造为通过向发射极层123施加预定的驱动电场来操作。发射极层123是包含PMN-PT-PZ的电介质层 三组分固溶体组合物作为主要成分，其居里温度Tc（℃）满足60≤Tc≤150。 版权所有（C）2008，JPO＆INPIT