Resistor With Pn Junction (epo) Patents (Class 257/E29.326)
  • Publication number: 20090200640
    Abstract: A variable resistive element comprising a configuration that an area of an electrically contributing region of a variable resistor body is finer than that constrained by an upper electrode or a lower electrode and its manufacturing method are provided. A bump electrode material is formed on a lower electrode arranged on a base substrate. The bump electrode material is contacted to a variable resistor body at a surface different from a contact surface to the lower electrode. The variable resistor body is contacted to an upper electrode at a surface different from a contact surface to the bump electrode material. Thus, a cross point region between the bump electrode material (the variable resistor body) and the upper electrode becomes an electrically contributing region of the variable resistor body, and then an area thereof can be reduced compared with that of the region regarding the conventional variable resistive element.
    Type: Application
    Filed: February 23, 2007
    Publication date: August 13, 2009
    Inventors: Yasunari Hosoi, Kazuya Ishihara, Takahiro Shibuya, Tetsuya Ohnishi, Takashi Nakano
  • Patent number: 7564078
    Abstract: Semiconductor component or device is provided which includes a current barrier element and for which the impedance may be tuned (i.e. modified, changed, etc.) using a focused heating source.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: July 21, 2009
    Assignee: Cadeka Microcircuits, LLC
    Inventors: Alain Lacourse, Mathieu Ducharme, Hugo St-Jean, Yves Gagnon, Yvon Savaria, Michel Meunier
  • Publication number: 20090174033
    Abstract: A method of manufacturing a resistive divider circuit, comprising providing a silicon body (6) having a plurality of opposing pairs of intermediate taps extending therefrom. Each tap comprises a thin silicon stem (61) supporting a relatively wider silicon platform (62). A silicidation protection (SIPROT) layer (S) is deposited over the body (6) and intermediate taps and then patterned to expose the platform (62). A silicidation process is performed to silicidate the platform to form a contact pad of relatively low resistivity.
    Type: Application
    Filed: April 19, 2007
    Publication date: July 9, 2009
    Applicant: NXP B.V.
    Inventor: Andy C. Negoi
  • Publication number: 20090152679
    Abstract: A metal electrode is disposed on each of a plurality of resistor groups which are made of polycrystalline silicon resistors and constitute a resistor circuit. The metal electrode is connected to an end of the resistor via another interconnecting layer. Accordingly, the external influence which the metal electrode receives during a semiconductor manufacturing process is prevented from directly acting on the resistor, whereby resistance variation is suppressed.
    Type: Application
    Filed: December 4, 2008
    Publication date: June 18, 2009
    Applicant: Seiko Instruments Inc.
    Inventor: Hirofumi Harada
  • Publication number: 20090096064
    Abstract: A method of forming a poly pattern for minimizing a change in a storage value in the R-string pattern of the LCD panel drive IC (LDI) that includes depositing a poly silicon layer used as a resistor in a R-string structure over a semiconductor substrate; and then forming a poly silicon layer pattern having interconnected H-shaped cross-sections; and then forming a silicide-anti blocking area (SAB) layer over the poly silicon layer pattern and then patterning the SAB layer to thereby form SAB layer patterns over portions of the poly silicon layer pattern while exposing other portions of the poly silicon layer pattern; and then forming a silicide layer over the exposed portions of the poly silicon layer pattern. Therefore, although the size of the SAB pattern is reduced due to problems caused in processing steps, the poly line that occupies most of the resistance does not change so that a change in the resistance is entirely reduced.
    Type: Application
    Filed: September 19, 2008
    Publication date: April 16, 2009
    Inventor: Byung-Ho Kim
  • Publication number: 20090051009
    Abstract: Formed on an insulator are an N? type semiconductor layer having a partial isolator formed on its surface and a P? type semiconductor layer having a partial isolator formed on its surface. Source/drain being P+ type semiconductor layers are provided on the semiconductor layer to form a PMOS transistor. Source/drain being N+ type semiconductor layers are provided on the semiconductor layer to form an NMOS transistor. A pn junction formed by the semiconductor layers is provided in a CMOS transistor made up of the transistors. The pn junction is positioned separately from the partial isolators where the crystal defect is thus very small. Therefore, the leakage current is very low at the pn junction.
    Type: Application
    Filed: October 20, 2008
    Publication date: February 26, 2009
    Applicant: Renesas Technology Corp.
    Inventors: Takashi Ipposhi, Toshiaki Iwamatsu
  • Publication number: 20080272460
    Abstract: An integrated circuit includes a first thin film resistor on a first dielectric layer. A first layer of interconnect conductors on the first dielectric layer includes a first and second interconnect conductors electrically contacting the first thin film resistor. A second dielectric layer is formed on the first dielectric layer. A second thin film resistor is formed on the second dielectric layer. A third dielectric layer is formed on the second dielectric layer. A second layer of interconnect conductors on the third dielectric layer includes a third interconnect conductor extending through an opening in the second and third dielectric layers to contact the first interconnect conductor, a fourth interconnect conductor extending through an opening in the second and third dielectric layers to contact the second interconnect conductor, and two interconnect conductors extending through openings in the third dielectric layer of the second thin film resistor.
    Type: Application
    Filed: July 21, 2008
    Publication date: November 6, 2008
    Inventors: Eric W. Beach, Vladimir F. Drobny, Derek W. Robinson
  • Patent number: 7439146
    Abstract: An integrated circuit includes a field plated resistor having enhanced area thereover for routing metal conductors, formed in the same layer of metal as forms contacts to the resistor, is fabricated by a sequence of processing steps. A resistor having a resistor body and a contact region at each end thereof is formed in an active region of a semiconductor substrate. A first layer of insulative material is formed over the resistor and a window is created through the first layer of insulative material to the resistor body to form a first contact region. A layer of polysilicon is formed over the first insulative layer to define a field plate, the polysilicon field plate being contiguous with the first contact region of the resistor and extending over the resistor body to substantially to the other contact region, as layout, design, and fabrication rules permit. A second insulative layer is formed over the polysilicon layer.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: October 21, 2008
    Assignee: Agere Systems Inc.
    Inventor: Thomas J. Krutsick
  • Publication number: 20080217741
    Abstract: A silicide-interface polysilicon resistor is disclosed. The silicide-interface polysilicon resistor includes a substrate, an oxide layer located on top of the substrate, and a polysilicon layer located on top of the oxide layer. The polysilicon layer includes multiple semiconductor junctions. The silicide-interface polysilicon resistor also includes a layer of silicide sheets, and at least one of the silicon sheets is in contact with one of the semiconductor junctions located within the polysilicon layer.
    Type: Application
    Filed: March 9, 2007
    Publication date: September 11, 2008
    Inventors: Steven G. Young, David M. Szmyd
  • Publication number: 20080211036
    Abstract: A nonvolatile memory device includes a semiconductor substrate, a first electrode on the semiconductor substrate, a resistive layer on the first electrode, a second electrode on the resistive layer and at least one tunneling layer interposed between the resistive layer and the first electrode and/or the second electrode. The resistive layer and the tunneling layer may support transition between first and second resistance states responsive to first and second voltages applied across the first and second electrodes. The first and second voltages may have opposite polarities.
    Type: Application
    Filed: February 26, 2008
    Publication date: September 4, 2008
    Inventors: Jin Shi Zhao, Jang-eun Lee, In-gyu Baek, Se-chung Oh, Kyung-tae Nam, Eun-kyung Yim
  • Patent number: 7414295
    Abstract: A transistor in which a physical property of its channel is changed according to an applied voltage, and methods of manufacturing and operating the same are provided. The transistor may include a first conductive layer on a substrate, a phase change layer and a second conductive layer which are sequentially stacked on the first conductive layer, a first current direction limiting unit and a second current direction limiting unit formed on the second conductive layer by being separated within a space, a third conductive layer and a fourth conductive layer formed on the first current direction limiting unit and the second current direction limiting unit, respectively, a word line connected to the third conductive layer, a bit line connected to the fourth conductive layer, and a voltage lowering unit connected to the word line.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: August 19, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Choong-Rae Cho, In-Kyeong Yoo, Myoung-Jae Lee
  • Patent number: 7372165
    Abstract: A method and apparatus for a semiconductor device having a semiconductor device having increased conductive material reliability is described. That method and apparatus comprises forming a conductive path on a substrate. The conductive path made of a first material. A second material is then deposited on the conductive path. Once the second material is deposited on the conductive path, the diffusion of the second material into the conductive path is facilitated. The second material has a predetermined solubility to substantially diffuse to grain boundaries within the first material.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: May 13, 2008
    Assignee: Intel Corporation
    Inventors: Valery M. Dubin, Ramanan V. Chebiam
  • Publication number: 20070257316
    Abstract: A terminating resistance element of an LSI chip has an N? type impurity diffusion region formed at the surface of a P type well at the surface of a semiconductor substrate, an N+ type impurity diffusion layer formed at the surface of the N? type impurity diffusion region, and a pair of electrodes formed at respective ends at the surface of the N+ type impurity diffusion layer. The N? type impurity diffusion region has an impurity concentration lower than the impurity concentration of the N+ type impurity diffusion layer. Therefore, the capacitance of the PN junction becomes smaller as compared to the conventional case where the N type impurity diffusion layer is provided directly at the surface of a P type semiconductor substrate. Therefore, reflection and attenuation of an input signal are suppressed.
    Type: Application
    Filed: January 19, 2007
    Publication date: November 8, 2007
    Applicant: RENESAS TECHNOLOGY CORP.
    Inventors: Yasushi Hayakawa, Katsushi Asahina
  • Patent number: 7087978
    Abstract: The accuracy of the width measurement of a semiconductor resistor is improved by modifying the gate mask of a standard MOS transistor fabrication process to form an opening between regions of polysilicon that are used as a mask when the substrate or well material is implanted to form the resistor.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: August 8, 2006
    Assignee: National Semiconductor Corporation
    Inventor: Richard F. Taylor
  • Patent number: 7038297
    Abstract: Ion implanted resistors formed in the body of a crystalline silicon substrate. The resistors have a different conductivity type from that of the silicon substrate. The sheet resistance and temperature dependence of the resistor layer is determined by the dose of the implant. Temperature variation can be optimized to be less than 2% over the temperature range ?40 C to +85 C. Furthermore, the temperature variation at room temperature (˜25 C) can be reduced to nearly zero.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: May 2, 2006
    Assignee: Winbond Electronics Corporation
    Inventors: Paul Vande Voorde, Chun-Mai Liu