With Protection Means Patents (Class 361/534)
  • Patent number: 11810728
    Abstract: An electrolytic capacitor that includes a capacitor element including an anode portion made of a metal layer, a dielectric layer on an outer surface of the metal layer, and a cathode portion on an outer surface of the dielectric layer; an insulating resin body covering the capacitor element; and a gas barrier film on an outer surface of the insulating resin body, the gas barrier film having a water vapor transmittance of 1 g/m2 per day or less.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: November 7, 2023
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Satoshi Tani, Yoshiyuki Nomura
  • Patent number: 10714268
    Abstract: A solid electrolytic capacitor includes a capacitor element, an anode terminal, a cathode terminal, and an outer package. The capacitor element includes an anode part, a dielectric body formed on a surface of the anode part, and a cathode part containing a conductive polymer. The anode terminal is electrically connected to the anode part. The cathode terminal is electrically connected to the cathode part. The outer package houses the capacitor element while exposing a part of the anode terminal and a part of the cathode terminal. The solid electrolytic capacitor includes a communicating path that connects a surface of the capacitor element to an exterior of the outer package.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: July 14, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Koji Okamoto, Shinya Suzuki
  • Patent number: 10692815
    Abstract: A chip on glass package assembly includes a glass substrate, a first type chip, a second type chip and a plurality of connecting lines. The glass substrate includes an active area and a peripheral area connected to the active area. The first type chip is mounted on the peripheral area and including a processor. The second type chip is mounted on the peripheral area and located on a side of the first type chip, wherein the second type chip is different from the first type chip. The connecting lines are disposed on the peripheral area and connecting the first type chip and the second type chip.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: June 23, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Wei-Kuo Mai, Chiao-Ling Huang
  • Patent number: 9721730
    Abstract: A capacitor is described. The capacitor comprises a first casing member having a first face wall extending to a first surrounding sidewall in turn extending to a first annular edge defining a first open end. A second casing member has a second face wall extending to a second surrounding sidewall in turn extending to a second annular edge defining a second open end. The second casing member is supported on the first annular edge to thereby close the first open end of the first casing member and provide a first capacitor enclosure comprising the first and second casing members in a stacked relationship. A cover is secured to the second annular edge to close the second casing member and provide a second capacitor enclosure. An anode, for example of tantalum, and a cathode active material, for example of ruthenium oxide, reside in capacitive association with each other inside each of the first and second capacitor enclosures. A working electrolyte is also contained in the capacitor enclosures.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: August 1, 2017
    Assignee: Greatbatch Ltd.
    Inventors: Barry C. Muffoletto, Anthony C. Perez
  • Patent number: 9530569
    Abstract: The present invention provides a method for manufacturing a solid electrolytic capacitor element, wherein a dielectric layer, a semiconductor layer, a carbon layer and a silver layer are sequentially formed on a tungsten base material. This method is characterized in that: the formation of the carbon layer is carried out by laminating a carbon paste on the semiconductor layer; the carbon paste is an aqueous resin solution containing carbon particles; and a repair formation treatment is carried out after the formation of the carbon layer but before the formation of the silver layer. The time duration of the repair formation treatment is 1-40 minutes; the current density is 0.05-2.5 mA/piece; and the treatment temperature is 0-40° C.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: December 27, 2016
    Assignee: SHOWA DENKO K.K.
    Inventors: Kazumi Naito, Katutoshi Tamura
  • Patent number: 9236192
    Abstract: A capacitor assembly that contains a solid electrolytic capacitor element positioned within a multi-layered casing is provided. The casing contains an encapsulant layer that overlies the capacitor element and a moisture barrier layer that overlies the encapsulant layer. Through careful control of the materials employed in the casing, the present inventor has discovered that the resulting capacitor assembly can be mechanically stable while also exhibiting electrical properties in the presence of high humidity levels (e.g., relative humidity of 85%). For example, the encapsulant layer may be formed from a thermoset resin (e.g., epoxy) that is capable of providing the capacitor element with mechanical stability. The moisture barrier layer may likewise be formed from a hydrophobic material.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: January 12, 2016
    Assignee: AVX Corporation
    Inventors: Martin Biler, Ladislav Vilc
  • Patent number: 9053854
    Abstract: A capacitor for use in ultrahigh voltage environments is provided. During formation of the capacitor, the forming voltage employed during anodization is generally about 300 volts or more and at temperatures ranging from about 10° C. to about 70° C. Such conditions can substantially improve the quality and thickness of the dielectric without adversely impacting the uniformity and consistency of its surface coverage. In addition, the solid electrolyte is also formed from a dispersion of preformed conductive polymer particles. In this manner, the electrolyte may remain generally free of high energy radicals (e.g., Fe2+ or Fe3+ ions) that can lead to dielectric degradation, particularly at the ultrahigh voltages noted above.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: June 9, 2015
    Assignee: AVX Corporation
    Inventors: Jan Petrzilek, Miloslav Uher, Tomas Karnik
  • Patent number: 8907603
    Abstract: A steering control apparatus includes a direct current power source, a three-phase alternating current motor, and a motor driving circuit. An emergency switching element is provided on at least two phases of a three-phase power supply line connected to the three-phase alternating current motor within the motor driving circuit, and the emergency switching element is turned off when an abnormality occurs such that the motor driving circuit is disconnected from the three-phase alternating current motor. The emergency switching element is a MOSFET, and the MOSFETs are provided in pairs in each of the two phases of the three-phase power supply line. Further, parasitic diodes of the pairs of MOSFETs are disposed in opposite orientations to each other.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: December 9, 2014
    Assignee: JTEKT Corporation
    Inventor: Yoshiyuki Shibata
  • Patent number: 8879240
    Abstract: Techniques are generally disclosed for controlling a release event from an electrical component. In some examples described herein, a device may include an inner packing material that is coupled to the electrical component and adapted to surround the electrical component. The inner packing material may be configured to trap gases produced by the electrical component during a release event. Additional examples described herein may include outer packing material configured to contain the inner packing material and substantially maintain a rigid shape during the release event. Further examples may include connection rods between the inner packing material and the outer packing material, wherein the connection rods are configured to resist expansion of the inner packing material. In some examples described herein, the inner packing material may be sealed to prevent a release of gas created by the release event.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: November 4, 2014
    Assignee: Empire Technology Development LLC
    Inventor: Ajith Kamath
  • Patent number: 8760170
    Abstract: Systems, methods, and circuits are disclosed for detecting continuity of a fuse or other current protection device in a circuit. For example, a signal is generated and coupled onto a closed circuit in which the continuity of the fuse closes the circuit. The signal is then coupled from the closed circuit to a signal detector, which detects the presence of the signal and provides an output indicative of the presence of the signal. If the fuse blows, the circuit is opened, prohibiting the signal from being coupled to the signal detector, in which case the signal detector provides an output indicative of the absence of the signal. This example, however, are not exhaustive.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: June 24, 2014
    Assignee: Schneider Electric Solar Inverters USA, Inc.
    Inventors: Ralph McDiarmid, Zoran Miletic
  • Publication number: 20140154548
    Abstract: The invention relates to a storage unit (1) for storing electrical energy. The storage unit (1) has at least one energy store (3, 5, 6, 7). According to the invention, the storage unit (1) also has a contact area for giving off heat to a heat sink (45). The storage unit (1) has at least one heat pipe (50), which is connected to the contact area and is connected to the energy store (3, 5, 6, 7) in such a way that heat dissipated inside the energy store (3, 5, 6, 7) can be carried away to the contact area via the heat pipe (50).
    Type: Application
    Filed: May 30, 2012
    Publication date: June 5, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Adolf Dillmann, Stefan Huehner, Reiner Holp
  • Patent number: 8725252
    Abstract: One embodiment includes a capacitor case sealed to retain electrolyte, at least one electrode disposed in the capacitor case, the at least one electrode comprising an overcurrent protector, a conductor coupled to the overcurrent protector and in electrical communication with a remainder of the electrode, the conductor sealingly extending through the capacitor case to a terminal disposed on an exterior of the capacitor case, a second electrode disposed in the capacitor case, a separator disposed between the electrode and the second electrode and a second terminal disposed on the exterior of the capacitor case and in electrical communication with the second electrode, with the terminal and the second terminal electrically isolated from one another, wherein the overcurrent protector is to interrupt electrical communication between the terminal and the remainder of the electrode at a selected current level.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: May 13, 2014
    Assignee: Cardiac Pacemakers, Inc.
    Inventor: Gregory J. Sherwood
  • Publication number: 20130279080
    Abstract: A capacitor element includes an anode foil, the first oxide film on a surface of the anode foil, a solid electrolyte layer formed using ?-conjugated conductive polymer dispersing material on the first oxide film, and a cathode foil on the solid electrolyte layer. The cathode foil faces the first oxide film across the solid electrolyte layer. An electrolytic capacitor includes the capacitor element, an anode terminal connected to the anode foil, and a second oxide film on a surface of the anode terminal. The second oxide film provided on the anode terminal has higher water repellency than the first oxide film provided on the anode foil. This electrolytic capacitor can reduce a leakage current.
    Type: Application
    Filed: February 15, 2012
    Publication date: October 24, 2013
    Applicant: Panasonic Corporation
    Inventors: Tatsuji Aoyama, Yuuki Murata, Hiroyuki Matsuura, Hidehiro Sasaki, Kazuyo Saito, Yukiya Shimoyama, Jyunya Kushizaki
  • Patent number: 8503165
    Abstract: A capacitor with an anode, a dielectric on the anode and a cathode on the dielectric. A blocking layer is on the cathode. A metal filled layer is on said blocking layer and a plated layer is on the metal filled layer.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: August 6, 2013
    Assignee: Kemet Electronics Corporation
    Inventors: Antony Chacko, Randy Hahn
  • Patent number: 8355242
    Abstract: A solid electrolytic capacitor element that is capable of withstanding laser welding without a significant deterioration in its electrical performance is provided. The capacitor element contains an anode body, dielectric, and solid electrolyte. To help shield the solid electrolyte from damage that might otherwise occur during manufacture of the capacitor, a multi-layered protective coating is employed in the present invention that overlies at least a portion of the solid electrolyte. More particularly, the protective coating includes a light reflective layer overlying the solid electrolyte and a stress dissipation layer overlying the light reflective layer. The light reflective layer can help reflect any light that inadvertently travels toward the capacitor during, for example, laser welding. This results in reduced contact of the solid electrolyte with the laser and thus minimizes defects in the electrolyte that would have otherwise been formed by carbonization.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: January 15, 2013
    Assignee: AVX Corporation
    Inventors: Ladislav Vilc, Jan Petrzilek
  • Patent number: 8289678
    Abstract: The present invention relates to a solid electrolytic capacitor and a method for preparing the same. There is provided a solid electrolytic capacitor in accordance with the invention including a capacitor element with anode polarity therein and a cathode layer formed on an outer surface thereof; an anode wire with an end portion protruding on one surface of the capacitor element; a cathode lead layer formed on the other surface the capacitor element; a molding part surrounding the capacitor element to expose the protruding end portion of the anode wire and an end portion of the cathode lead layer; and an anode terminal and a cathode terminal formed by a plating layer at both sides of the molding part. It is possible to save preparation cost by simplifying a structure and a preparation process of the solid electrolytic capacitor.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: October 16, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd
    Inventors: Jae Kwang Kim, Kwan Hyeong Kim, Chong Hoon Pak
  • Patent number: 7969711
    Abstract: A Zener diode—capacitor combination wherein a Zener diode is mounted in the capacitor body and connected in parallel with the capacitor after the capacitor has been voltage tested. A welded strap or jumper wire completing the diode circuit or a connection of separate terminations during soldering may be used to complete the circuit.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: June 28, 2011
    Assignee: Kemet Electronics Corporation
    Inventors: John D. Prymak, Eric Jayson Young
  • Publication number: 20100328847
    Abstract: To reduce the increase in leakage current in a molding process.
    Type: Application
    Filed: February 17, 2009
    Publication date: December 30, 2010
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Takashi Umemoto, Masaaki Nemoto, Hiroshi Nonoue
  • Patent number: 7826200
    Abstract: A fused electrolytic capacitor assembly that offers improved performance characteristics in a convenient and space-saving package is provided. More specifically, the fused electrolytic capacitor assembly contains an electrolytic capacitor element and a resettable fuse contained within a case. The capacitor assembly also contains a stress absorbing material that is positioned adjacent to and in contact with the resettable fuse. By selecting a stress absorbing material having a certain modulus and a certain degree of inherent flexibility, the present inventors believe the resettable fuse is better able to expand to its full capacity upon exposure to an excessive current. In this manner, the resettable fuse is able to better function during use.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: November 2, 2010
    Assignee: AVX Corporation
    Inventor: Ivan Pascenko
  • Patent number: 7819928
    Abstract: The present invention provides a capacitor production method where an electric conductor having a dielectric layer formed thereon is used as one electrode and a semiconductor layer is formed by energization to be the other electrode, comprising the energization performed through a constant current diode, and also provides a jig for producing capacitors, which is used for forming semiconductor layers by energization on two or more electric conductors each having formed on the surface thereof a dielectric layer, the jig comprising two or more current ejection-type constant current sources in accordance with the number of electric conductors, which current sources each has an output electrically connected in series with a connection terminal for the electric conductor. Use of the jig of the present invention, enables production of capacitors including semiconductor as one electrode with a small variation in the capacitance.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: October 26, 2010
    Assignee: Showa Denko K.K.
    Inventors: Kazumi Naito, Katutoshi Tamura
  • Publication number: 20100246099
    Abstract: A solid electrolytic capacitor includes a capacitor element, an external conduction member and a fuse conductor. The capacitor element includes a porous sintered body made of valve metal, an anode wire projecting from the porous sintered body, and a dielectric layer and a solid electrolyte layer covering the porous sintered body. The fuse conductor electrically connects the external conduction member and one of the anode wire and the solid electrolyte layer to each other. The fuse conductor is made of a metal containing one of Au—Su-based alloy, Zn—Al-based alloy, Sn—Ag—Cu-based alloy, Sn—Cu—Ni—based alloy and Sn—Sb—based alloy.
    Type: Application
    Filed: March 17, 2010
    Publication date: September 30, 2010
    Applicant: ROHM CO., LTD.
    Inventors: Kentaro Naka, Takahiro Maeda
  • Publication number: 20100079930
    Abstract: A first solid electrolytic capacitor according to the present invention comprises a capacitor element, an exterior resin covering the capacitor element, an anode terminal, a cathode terminal, and a metal wire. The capacitor element comprises an anode body from which an anode lead is extracted, a dielectric layer formed on a surface of the anode body, and a cathode layer formed on the dielectric layer. The anode terminal and the cathode terminal are electrically connected to the anode lead and the cathode layer, respectively, and extracted to an outer surface of the exterior resin, the anode terminal including an opposing part opposed to the anode lead in the exterior resin. The metal wire includes both ends connected to the opposing part and a curving part, and is provided to the anode lead, and at least a part of the curving part is electrically connected to the anode lead.
    Type: Application
    Filed: September 22, 2009
    Publication date: April 1, 2010
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Nobuhiko HAYASHI, Takashi UMEMOTO, Hiroshi NONOUE
  • Patent number: 7684837
    Abstract: A cellular phone and a manufacturing method thereof capable of achieving attractive design as well as high operating efficiency in the assembly process. A cellular phone comprises a first housing, a second housing, a first circuit board, a second circuit board, a flexible cable to electrically connect the first and second circuit boards, and a hinge that rotates about a prescribed rotation axis. When the first and second housings are in their open positions resulting from the rotation of the hinge, one edge of the second housing is located vertically above one edge of the first housing. The hinge includes hinge semi-cylindrical portions that form a hollow part capable of accommodating the flexible cable. The first and second circuit boards are mounted on the first and second housings, respectively. The flexible cable is accommodated in the hollow part. One end of the flexible cable is threaded through an aperture formed at the one edge of the second housing.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: March 23, 2010
    Assignee: NEC Corporation
    Inventor: Takao Ito
  • Publication number: 20090316338
    Abstract: The present invention provides a solid electrolytic condenser including a condenser element with anode polarity; an anode wire with one side inserted inside the condenser element and the other side projected outside the condenser element; and an insulating layer formed by coating one surface of the condenser element and an exposed region of the anode wire adjacent to the one surface of the condenser element with a liquid insulating material through a non-contact scattering method and an apparatus and a method for forming the insulating layer of the solid electrolytic condenser.
    Type: Application
    Filed: September 16, 2008
    Publication date: December 24, 2009
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jae Jun PARK, Hwa Sung HWANG, Tae Hun KANG
  • Publication number: 20090244811
    Abstract: A fused electrolytic capacitor assembly that offers improved performance characteristics in a convenient and space-saving package is provided. More specifically, the fused electrolytic capacitor assembly contains an electrolytic capacitor element and a resettable fuse contained within a case. The capacitor assembly also contains a stress absorbing material that is positioned adjacent to and in contact with the resettable fuse. By selecting a stress absorbing material having a certain modulus and a certain degree of inherent flexibility, the present inventors believe the resettable fuse is better able to expand to its full capacity upon exposure to an excessive current. In this manner, the resettable fuse is able to better function during use.
    Type: Application
    Filed: March 25, 2008
    Publication date: October 1, 2009
    Applicant: AVX CORPORATION
    Inventor: Ivan Pascenko
  • Publication number: 20090201631
    Abstract: In a solid electrolytic capacitor, a capacitor element laminate formed by stacking capacitor elements each using a valve metal as an anode body is bonded to a substrate by a conductive adhesive and packaged by a resin portion. The substrate includes a printed substrate made of an epoxy resin. On its mounting surface for the capacitor element laminate, there are provided an anode mounting portion and a cathode mounting portion each made of a copper base material. The anode mounting portion and the cathode mounting portion are electrically connected to an external anode terminal and an external cathode terminal, respectively, formed on the mounting surface of the solid electrolytic capacitor, through anode vias and cathode vias each penetrating through the epoxy resin. A part of the anode mounting portion on the substrate (6) extends to the outside of the packaging resin portion.
    Type: Application
    Filed: February 13, 2009
    Publication date: August 13, 2009
    Applicant: NEC TOKIN Corporation
    Inventors: Takeo KASUGA, Takashi Mizukoshi, Koji Sakata, Takeshi Saito
  • Patent number: 7554795
    Abstract: An electronic component has an element, a pair of terminal portions which are disposed on the element, and an external covering material which covers a part of the terminal portions and the element. The electronic component is configured such that inclined portions are disposed on corner portions of a bottom surface and side surfaces of the external covering material, and the terminal portions are protruded from corner portions where the inclined portions and the bottom surface of the external covering material intersect.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: June 30, 2009
    Assignee: Panasonic Corporation
    Inventors: Akio Hidaka, Shouichi Ikebe, Yuuichi Murano, Hirozumi Kazitani, Mika Ikeda, Yoshitaka Mizoguchi
  • Patent number: 7486498
    Abstract: A capacitor anode (1) includes a substrate (10) which is formed from an alloy, metal, or metal compound which has a high tensile yield strength and high elastic modulus. The material has a composition which can be anodized, yielding an adherent and compressively stressed dielectric film (12) of pure, mixed, alloyed, or doped oxide that has a high usable dielectric strength (e.g., over 50 V/?m) and high dielectric constant (e.g., 20 to over 10,000). A capacitor formed from the anode has a high energy density.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: February 3, 2009
    Assignee: Case Western Reserve University
    Inventors: Gerhard E. Welsch, Donald L. McGervey
  • Patent number: 7481849
    Abstract: An electric appliance comprises a component part (101) that comprises electronic components, among which is an electrolytic capacitor (105). A molded part (301) is molded around the component part (101), An outer surface of the molded part (301) constitutes at least a part of the outer surface of the electric appliance. The molded part comprises a cavity (302), which contains something else than electronic components or connections between electronic components. The cavity (302) is separated from the electrolytic capacitor (105) by at most a wall the thickness of which is smaller than a mean material thickness of the molded part (301) between the component part (101) and outside of the electric appliance.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: January 27, 2009
    Assignee: Salcomp Oy
    Inventors: Mikko Lehtonen, Marko Hagström
  • Patent number: 7481850
    Abstract: On a surface-roughened aluminum foil, an aluminum oxide film as an anodic oxide film is formed. Then, a conductive polymer layer as a solid electrolyte is formed thereon and thereafter a first metal plating layer is directly formed on the conductive polymer layer, thereby forming a cathode portion. On the other hand, a second metal plating layer is formed on another portion of the surface-roughened aluminum foil, which is not subjected to anodic oxidation or which is subjected to anodic oxidation followed by polishing or formation of an anode deposition film, to thereby form an anode portion. Third metal plating layers are formed at the anode and the cathode portions to obtain a capacitor element. A plurality of capacitor elements are stacked and bonded together fusion after formation of the third metal plating layers. Alternatively the capacitor elements may be bonded together by conductive paste without the third metal layers.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: January 27, 2009
    Assignee: NEC Tokin Corporation
    Inventors: Takeshi Saito, Sadamu Toita, Katsuhiro Yoshida
  • Patent number: 7460357
    Abstract: An electrolyte for an electrolytic capacitor which is high in electrolytic conductivity, excellent in heat stability and high in withstand voltage. An electrolyte for an electrolytic capacitor comprising a tetrafluoroaluminate ion; and an electrolyte for an electrolytic capacitor containing a salt and a solvent, characterized in that electrolytic conductivity X (mS·cm?1) at 25° C. and withstand voltage Y (V) of a capacitor satisfy the relationships of formulae (I): Y??7.5X+150, and X?4, Y>0.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: December 2, 2008
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Masayuki Takeda, Masahiro Takehara, Makoto Ue
  • Patent number: 7443653
    Abstract: A chip type solid electrolytic capacitor, in which a PCB includes anode and cathode connection lands formed on upper parts of an insulation board, and anode and cathode terminals formed on lower parts of the insulation board. The anode and cathode terminals are electrically connected to the anode and cathode connection lands, respectively, through vias. An anode connection member is formed on the anode connection land. A capacitor device having an anode lead and a cathode layer is mounted on the PCB with the anode lead weld-connected to the anode connection member and the cathode layer electrically connected to the cathode connection land via a conductive adhesive. An outer resin covers side and upper parts of the PCB including the capacitor device. The anode terminal and the cathode terminal have stepped-down surfaces which are formed along at least parts of peripheral portions thereof, respectively, and covered by the outer resin.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: October 28, 2008
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jae Kwang Kim, Gyu Hwang Lee, Kwan Hyeong Kim
  • Publication number: 20080232039
    Abstract: A solid electrolytic capacitor including a solid electrolytic capacitor component comprises a porous anode body 2 composed of valve metal having a anode lead 1 protruding therefrom, a anode oxide film, a solid electrolyte layer 4, a graphite layer 5, a silver paste layer 6, a resist layer 3 separating the anode lead 1 used as a anode portion and the porous anode body 2 used as a cathode portion, and a anode lead element 7 connected to the anode lead 1, the anode oxide film, solid electrolyte layer 4, graphite layer 5, silver paste layer 6 being successively formed on the surface of the porous anode body 2, wherein the solid electrolytic capacitor component is bonded on a mounting substrate 21 having a anode terminal 21a, a cathode terminal 21b, and an insulating portion 21c therebetween with a precuring insulating adhesive 9 formed on the insulating portion 21c of the mounting substrate 21 and precuring conductive adhesives 8 formed on the anode terminal and cathode terminal, and sealed with exterior resin 10
    Type: Application
    Filed: March 13, 2008
    Publication date: September 25, 2008
    Applicant: NEC TOKIN CORPORATION
    Inventors: Takeshi Saito, Yuji Yoshida, Takeo Kasuga, Koji Sakata, Katsuhiro Yoshida, Masanori Takahashi
  • Publication number: 20080170354
    Abstract: A fused electrolytic capacitor assembly that offers improved performance characteristics in a convenient and space-saving package is provided. More specifically, the fused electrolytic capacitor assembly contains an electrolytic capacitor element and a surface mount fuse that are contained within a case and connected to a common anode termination. During initial production, the electrolytic capacitor element and fuse are connected to the anode termination so that the fuse is bypassed during testing of the individual capacitor element. After testing, the anode termination may be cropped so that the fuse and capacitor element become connected in series. Thus, during use, the fuse will disintegrate in response to an excessive current resulting from a short circuit discharge, which breaks the electrical connection between the capacitor element and limits the likelihood of fire or other damage remaining circuit elements.
    Type: Application
    Filed: January 15, 2007
    Publication date: July 17, 2008
    Inventors: Leos Dvorak, Stanislav Zednicek, Zdenek Sita, Ales Vyroubal, Radek Matousek
  • Patent number: 7379290
    Abstract: An electrically conductive polymer composition contains an electrically conductive polymer obtained by using a polymer in the form of cations composed of repeating structural units of 3,4-ethylene dioxythiophene and polystyrene sulfonic acid as anions and further contains naphthalene sulfonic acid as an additive. A solid electrolytic capacitor 101 or a surface-mount transmission line element 102 has a polypyrrole conductive polymer layer 3 as a first solid electrolyte and a poly(3,4-ethylene dioxythiophene) conductive polymer layer 4 as a second solid electrolyte.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: May 27, 2008
    Assignee: NEC TOKIN Corporation
    Inventors: Sadamu Toida, Shinji Arai, Kenji Araki, Katsuhiro Yoshida, Tadamasa Asami, Takeshi Saitou, Yuuichi Maruko
  • Patent number: 7349197
    Abstract: A capacitor element in which a dielectric film, a solid electrolyte layer, and a cathode-side electrode film are formed on the anode chip body obtained by sintering a powder of a valve-acting metal is manufactured without causing decrease in the effective volume of the metal powder or degradation of electric connection. This is attained by adhesively attaching one end surface of the anode chip body to the surface of a metal plate with an electrically conductive adhesive, so that the end surface can be peeled off from the metal plate, successively forming a dielectric film, a solid electrolyte layer, and a cathode-side electrode film, in this order, on the anode chip body in this state to form a capacitor element, and peeling the capacitor element off and separating it from the metal plate.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: March 25, 2008
    Assignee: Rohm Co., Ltd.
    Inventor: Hideki Ando
  • Patent number: 7342771
    Abstract: A solid electrolytic capacitor is provided, which can reduce impedance, particularly, the ESL and the ESR. In one embodiment, such a solid electrolytic capacitor comprises a foil-like valve metal substrate formed with an insulating oxide film on the surface thereof, a valve metal body whose one end portion region is bonded to one of two opposite end portion regions of the foil-like valve metal substrate, a conductive metal substrate whose one end portion region is bonded to the other end portion region of the foil-like valve metal substrate, a cathode electrode formed by sequentially laminating at least a solid high molecular polymer electrolyte layer and a conductive layer on the surface of the foil-like valve metal substrate, and a cathode lead electrode being drawn out from the cathode electrode in a direction perpendicular to one major surface of the foil-like valve metal substrate.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: March 11, 2008
    Assignee: TDK Corporation
    Inventors: Masaaki Kobayashi, Masaaki Togashi
  • Patent number: 7333319
    Abstract: To provide a solid electrolytic capacitor capable of being miniaturized with larger capacitance. A solid electrolytic capacitor comprises a capacitor element, an anode lead frame, a cathode lead frame, an adhesive layer and an exterior resin. The anode lead frame is connected to an anode of the capacitor element. The cathode lead frame includes a first and a second cathode leads and a boundary part. The first cathode lead is connected to a cathode of the capacitor element by the adhesive layer. The boundary part is disposed between the first cathode lead and the second cathode lead so as to provide a level difference at the capacitor element side. The exterior resin covers the capacitor element, a part of the anode lead frame, a part of the cathode lead frame and the adhesive layer.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: February 19, 2008
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Keiko Matsuoka
  • Patent number: 7315441
    Abstract: The invention relates to an electrolytic capacitor having a flame retardant electrolyte and a high safety even if the electrolyte leaks out to outside, and more particularly to an electrolytic capacitor comprising a positive electrode provided with an insulating oxide layer formed through anodic oxidation, a negative electrode, a separator and an electrolyte containing a solute in an organic solvent, characterized in that the electrolyte contains not less than 3% by mass of a phosphazene derivative and/or an isomer of a phosphazene derivative.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: January 1, 2008
    Assignee: Bridgestone Corporation
    Inventors: Hiroshi Kanno, Masashi Otsuki
  • Patent number: 7312978
    Abstract: An electrically conductive polymer composition contains an electrically conductive polymer obtained by using a polymer in the form of cations composed of repeating structural units of 3,4-ethylene dioxythiophene and polystyrene sulfonic acid as anions and further contains naphthalene sulfonic acid as an additive. A solid electrolytic capacitor 101 or a surface-mount transmission line element 102 has a polypyrrole conductive polymer layer 3 as a first solid electrolyte and a poly(3,4-ethylene dioxythiophene) conductive polymer layer 4 as a second solid electrolyte.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: December 25, 2007
    Assignee: NEC TOKIN Corporation
    Inventors: Sadamu Toida, Shinji Arai, Kenji Araki, Katsuhiro Yoshida, Tadamasa Asami, Takeshi Saitou, Yuuichi Maruko
  • Patent number: 7295426
    Abstract: A manufacturing method for a solid electrolytic capacitor of the present invention includes producing a terminal frame having aligned therein unit terminal areas each including an anode terminal portion and a cathode terminal portion, placing a rod-like piece on a surface of the terminal frame across a plurality of aligned anode terminal portions, and fixing the rod-like piece to the terminal frame by welding. Thereafter, a solid electrolytic capacitor is provided through a placement of a capacitor element, charge of a mold resin, and a cutting process.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: November 13, 2007
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Hayatoshi Ihara
  • Patent number: 7295425
    Abstract: The present invention provides a molding having excellent workability and a production method therefore. In addition, the present invention provides a molding with which a capacitor element having excellent electric properties can be obtained, and which has excellent workability that can be used to make a porous anode element for an electrolytic capacitor. The molding with a substratum has a sheet-shaped substratum and a molding which is provided on this sheet-shaped substratum such that the molding can be separated, in which the molding has a protective layer and a porous-body-forming layer, the protective layer includes resin as a main component, and the porous-body-forming layer includes valve action metal powder and binder resin.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: November 13, 2007
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Wataru Suenaga, Minoru Moriyama, Akiko Miyamoto
  • Patent number: 7292432
    Abstract: A solid electrolytic capacitor of the present invention includes a capacitor element having an anode element, an anode lead member projecting from the anode element, a dielectric coating formed on a surface of the anode element and a surface of the anode lead member near the anode element, a solid electrolyte layer formed on the dielectric coating, and a cathode lead layer formed on the solid electrolyte layer; and an insulating enclosure member for coating the outer periphery of the capacitor element. End faces of the dielectric coating and the solid electrolyte layer formed on the anode lead member are formed approximately flush with each other. The end faces of the dielectric coating and the solid electrolyte layer are covered with an insulating layer made of a thermoplastic insulating material.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: November 6, 2007
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Atsushi Furuzawa, Yoshikazu Hirata, Kohei Goto, Mitsuru Shirasaka
  • Patent number: 7289314
    Abstract: A metal foil for capacitor element is produced through a process including steps of etching and ten electrochemically forming a metal foil after making cut lines each in a shape of a capacitor element with at least a part of a portion predetermined to be an anode-leading-out-part left uncut. The step of etching the foil is preferably performed with the anode-leading-out-parts being protected by protective material. Solid electrolytic capacitor elements prepared by using the metal foil have narrow variation in capacitance.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: October 30, 2007
    Assignee: Showa Denko K.K.
    Inventors: Kenki Kobayashi, Toru Sawaguchi, Hiroshi Konuma
  • Patent number: 7286336
    Abstract: An oxygen plasma process for treating a dielectric oxide layer, particularly an anodic oxide, subsequent to its incorporation into an electrolytic capacitor is described. The present treatment reduces DC leakage and improves shelf life stability of the resulting capacitor in comparison to anodic oxides treated in a conventional manner. This is important for critical applications such as implantable cardioverter defibrillators where capacitor charging time and charge/discharge energy efficiency are critical.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: October 23, 2007
    Assignee: Greatbatch Ltd.
    Inventors: Yanming Liu, Barry Muffoletto, David Goad
  • Patent number: 7279015
    Abstract: Process for the production of electrolytic capacitors with low equivalent series resistance and low residual current, having a solid electrolyte formed from conducting polymers and an outer layer containing conducting polymers and a binder, electrolytic capacitors produced by the process and their use.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: October 9, 2007
    Assignee: H.C. Starck GmbH
    Inventor: Udo Merker
  • Patent number: 7277271
    Abstract: A solid electrolytic capacitor includes a capacitor unit having a cathode frame coupled to a cathode part of a capacitor element, and anode frames formed at the opposite sides of the capacitor unit sandwiching a cathode frame, and coupled to an anode part of the capacitor element. Flat parts provided at the opposite ends of anode terminals are coupled to the anode frames. A flat part provided in the center of a cathode terminal is coupled to the cathode frame. The capacitor unit is covered with coating resin. The solid electrolytic capacitor has a simplified structure and a lower ESL.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: October 2, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideto Yamaguchi, Katsuhisa Ishizaki
  • Patent number: 7251123
    Abstract: Implantable defibrillators are implanted into the chests of patients prone to suffering ventricular fibrillation, a potentially fatal heart condition. A critical component in these devices is an aluminum electrolytic capacitors, which stores and delivers one or more life-saving bursts of electric charge to a fibrillating heart. These capacitors make up about one third the total size of the defibrillators. Unfortunately, conventional manufacturers of these capacitors have paid little or no attention to reducing the size of these capacitors through improved capacitor packaging. Accordingly, the inventors contravened several conventional manufacturing principles and practices to devise unique space-saving packaging that allows dramatic size reduction.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: July 31, 2007
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Michael J. O'Phelan, James M. Poplett, Robert R. Tong, Alexander Gordon Barr
  • Patent number: 7233483
    Abstract: A solid electrolytic capacitor having an anode of valve metals or of an alloy of which main component is valve metals; a dielectric layer formed by anodizing said anode; an electrolyte layer formed on said dielectric layer; and a cathode formed on said electrolyte layer; wherein said cathode has a silver layer using silver and sulfur and/or sulfur compound is contained in said silver layer.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: June 19, 2007
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kazuhiro Takatani, Takahisa Iida, Mamoru Kimoto
  • Patent number: 7227739
    Abstract: A solid electrolytic capacitor having significantly lowered its ESL is provided. In solid electrolytic capacitor elements adjacent each other in the solid electrolytic capacitor in accordance with the present invention, their respective anodes are connected to each other by an anode conduction path of a conduction path pair, whereas their respective cathodes are connected to each other by a cathode conduction path of the conduction path pair. Therefore, when electrons migrate between the solid electrolytic capacitor elements, respective currents directed opposite from each other flow through a pair of substantially parallel conduction paths. Consequently, a magnetic field caused by the current flowing through one conduction path is offset by a magnetic field caused by the current flowing through the other conduction path, whereby both magnetic fields cancel each other out. Hence, the solid electrolytic capacitor lowers its ESL.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: June 5, 2007
    Assignee: TDK Corporation
    Inventor: Masaaki Kobayashi