Pn Junction Isolated Integrated Circuit With Isolation Walls Having Minimum Dopant Concentration At Intermediate Depth In Epitaxial Layer (e.g., Diffused From Both Surfaces Of Epitaxial Layer) Patents (Class 257/929)
  • Patent number: 8089066
    Abstract: To provide a light emitting device high in reliability with a pixel portion having high definition with a large screen. According to a light emitting device of the present invention, on an insulator (24) provided between pixel electrodes, an auxiliary electrode (21) made of a metal film is formed, whereby a conductive layer (20) made of a transparent conductive film in contact with the auxiliary electrode can be made low in resistance and thin. Also, the auxiliary electrode (21) is used to achieve connection with an electrode on a lower layer, whereby the electrode can be led out with the transparent conductive film formed on an EL layer. Further, a protective film (32) made of a film containing hydrogen and a silicon nitride film which are laminated is formed, whereby high reliability can be achieved.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: January 3, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Masaaki Hiroki, Masakazu Murakami, Hideaki Kuwabara
  • Patent number: 8039359
    Abstract: In one embodiment, the ESD device uses highly doped P and N regions deep within the ESD device to form a zener diode that has a controlled breakdown voltage.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: October 18, 2011
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Thomas Keena, Ki Chang, Francine Y. Robb, Mingjiao Liu, Ali Salih, John Michael Parsey, Jr., George Chang
  • Patent number: 7538395
    Abstract: In one embodiment, the ESD device uses highly doped P and N regions deep within the ESD device to form a zener diode that has a controlled breakdown voltage.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: May 26, 2009
    Assignee: Semiconductor Components Industries, L.L.C.
    Inventors: Thomas Keena, Ki Chang, Francine Y. Robb, Mingjiao Liu, Ali Salih, John Michael Parsey, Jr., George Chang
  • Patent number: 7474011
    Abstract: A process and system for estimating the occurrence of single event latch-up in an integrated circuit. The process involves determining the resistance between each junction and the closest appropriate tap in a regular shaped well. Each junction occurring in an irregular-shaped well is also identified. Finally, the method may make suggestions for lowering the probability that single event latch-up may occur in the integrated circuit.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: January 6, 2009
    Assignee: Integrated Device Technologies, inc.
    Inventors: Chuen-Der Lien, Ta-Ke Tien, Pao-Lu Louis Huang
  • Patent number: 6867438
    Abstract: There is a demand of a solid-state imaging device capable of being driven at a high speed and in which the shading of sensitivity and illuminance defect can be prevented from being caused. A solid-state imaging device (20) comprises a light-receiving sensor section disposed on the surface layer portion of a substrate (21) for performing a photoelectric conversion, a charge transfer section for transferring a signal charge read out from the light-receiving sensor section, a transfer electrode (27) (28) made of polysilicon formed on a substrate (21) at a position approximately above the charge transfer section through an insulating film (26), and an interconnection made of polysilicon and interconnected to the transfer electrode (27) (28). At least one of the polysilicon transfer electrode (27)(28) and the interconnection is formed on a polysilicon layer (27a) (28a) by selectively depositing a high-melting point metal having a resistance value lower than that of polysilicon.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: March 15, 2005
    Assignee: Sony Corporation
    Inventors: Yasushi Maruyama, Hideshi Abe
  • Patent number: 6838715
    Abstract: An exemplary CMOS image sensor comprises a plurality of pixels arranged in an array. The plurality of pixels includes a first pixel proximate an optical center of the array, and a second pixel proximate a peripheral edge of the array. The CMOS image sensor further comprises a first metal interconnect segment associated with the first pixel situated in a first metal layer, and a second metal interconnect segment associated with the second pixel situated in the first metal layer. The second metal interconnect segment is shifted closer to the optical center of the array than the first metal interconnect segment so that the second metal interconnect segment approximately aligns with a principle ray angle incident the second pixel, thereby reducing pixel light shadowing.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: January 4, 2005
    Assignee: ESS Technology, Inc.
    Inventors: Selim Bencuya, Richard Mann, Erik Stauber
  • Patent number: 6809003
    Abstract: A method of forming a semiconductor device on a substrate. The method includes forming a first epitaxial layer on the substrate. Next, a selected impurity is introduced to a surface of the first epitaxial layer. A second epitaxial layer is then formed on the surface of the first epitaxial layer and over the selected impurity. Finally, the selected impurity is driven through the first epitaxial layer and the second epitaxial layer to form the desired doped regions.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: October 26, 2004
    Assignee: Polarfab LLC
    Inventor: Daniel J. Fertig
  • Patent number: 6787829
    Abstract: A liquid crystal display panel of the invention is such that, in a pixel region defined by a region of the array substrate surrounded by a pair of image signal lines and a pair of scanning signal lines, of a line-shaped pixel electrode and a common electrode, the electrode that is disposed adjacent to and parallel to a signal line is made of an opaque conductor and at least one of the other electrodes is made of a transparent conductor. Adverse effects of the electric field formed between a signal line and an adjacent electrode thereto are suppressed and a sufficient aperture ratio is ensured by using a transparent conductor for the electrode contributing good display.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: September 7, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tetsuo Fukami, Katsuhiko Kumagawa, Hiroyuki Yamakita, Masanori Kimura, Michiko Okafuji, Satoshi Asada
  • Patent number: 6781162
    Abstract: To provide a light emitting device high in reliability with a pixel portion having high definition with a large screen. According to a light emitting device of the present invention, on an insulator (24) provided between pixel electrodes, an auxiliary electrode (21) made of a metal film is formed, whereby a conductive layer (20) made of a transparent conductive film in contact with the auxiliary electrode can be made low in resistance and thin. Also, the auxiliary electrode (21) is used to achieve connection with an electrode on a lower layer, whereby the electrode can be led out with the transparent conductive film formed on an EL layer. Further, a protective film (32) made of a film containing hydrogen and a silicon nitride film which are laminated is formed, whereby high reliability can be achieved.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: August 24, 2004
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Masaaki Hiroki, Masakazu Murakami, Hideaki Kuwabara
  • Patent number: 6756617
    Abstract: It is an object of the present invention to provide wiring pattern conditions for obtaining a high-quality analog image output signal in a contact image sensor which operates at a high speed (5 MHz or more). In order to achieve this object, a CIS substrate has the following arrangement. Signal lines &phgr;M, &phgr;RS, and &phgr;TR which transmit signals to CCD chips (2—2) are digital signal lines Dn, and signal lines from the CCD chips (2—2) to the inputs of emitter followers and output lines from the emitter followers are analog signal lines An. In FIG. 1, letting A1 be an analog signal line from the CCD, and D1 be a digital signal line, the analog signal line A1 and digital signal line D1 are formed on separate layers.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: June 29, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuhisa Koizumi
  • Publication number: 20040012100
    Abstract: In a photosensitive imaging chip, such as employing CCD or CMOS technology, each photosite is electrically isolated from other structures on the chip by a trench. The trench extends through an epitaxial layer of the chip and intersects a heavily-doped substrate layer of the chip by at least 1 &mgr;m. The trench can be formed by plasma etching, and filled with polysilicon.
    Type: Application
    Filed: July 18, 2002
    Publication date: January 22, 2004
    Applicant: Xerox Corporation
    Inventor: Paul A. Hosier
  • Patent number: 6611007
    Abstract: A novel quantum well intermixing method for regionally modifying the bandgap properties of InGaAsP quantum well structures is disclosed. The method induces bandgap wavelength blue shifting and deep states for reducing carrier lifetime within InGaAsP quantum well structures. The novel quantum well intermixing technique is applied to the modulator section of an integrated DFB laser/electro-absorption modulator, wherein the modulator exhibits fast switching times with efficient optical coupling between the DFB laser and modulator region.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: August 26, 2003
    Assignee: Fiber Optic Systems Technology, Inc.
    Inventors: David A. Thompson, Brad J. Robinson, Gregory J. Letal, Alex S. W. Lee
  • Patent number: 6608352
    Abstract: In a system for determining thermal resistance of a field effect transistor, a p-n junction is formed with one of drain and source regions of the transistor for determining a current versus temperature characteristic of the p-n junction. A respective temperature of the transistor is determined for each of a plurality of power dissipation levels through the transistor from the current versus temperature characteristic of the p-n junction. The thermal resistance is a rate of change of the temperature with respect to a rate of change of the power dissipation level for the field effect transistor.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: August 19, 2003
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Wei Long, Michael Lee
  • Patent number: 5719425
    Abstract: A multiple implant lightly doped drain ("MILDD") field effect transistor is disclosed. The transistor includes a channel, a gate, a dielectric structure that separates the gate from the channel, a source region and a drain region. The drain region has a first drain subregion, a second drain subregion and a third drain subregion. Each drain subregion has a dopant concentration that differs from that of the other two drain subregions. A method of forming the same is also disclosed.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: February 17, 1998
    Assignee: Micron Technology, Inc.
    Inventors: Salman Akram, Akram Ditali
  • Patent number: 5701022
    Abstract: A semiconductor memory configuration in a semiconductor substrate includes bit lines, word lines, and memory cells each including one memory capacitor and one MOS selection transistor having two conducting regions and a gate electrode. Each memory capacitor is connected to one of the conducting regions of the transistor. The other of the conducting regions of the transistor is connected to one of the bit lines, and the gate electrode of the transistor is connected to one of the word lines. An insulating field oxide or buried insulating oxide with substantially vertical sidewalls is provided. A trench lies adjacent to the insulating field oxide or buried insulating oxide and adjacent to one of the conducting regions. The capacitors are each disposed in one trench for each memory cell. A first insulating layer covers the inner trench wall surface. A first electrode of the capacitor is disposed perpendicular to the substrate surface on the first insulating layer completely inside the trench.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: December 23, 1997
    Assignee: Siemens Aktiengesellschaft
    Inventors: Walter-Ulrich Kellner, Karl-Heinz Kusters, Wolfgang Muller, Franz-Xaver Stelz
  • Patent number: 5623159
    Abstract: An improved isolation structure for a semiconductor device includes a p-type semiconductor substrate (12) with a p-type well (28) disposed in the substrate (12). A continuous plurality of n-type regions (14, 16, 26) is disposed around the p-type well (28), and the continuous plurality of n-type regions (14, 16, 26) fully isolates the p-type well (28) from the substrate (12) except that the continuous plurality of regions (14, 16, 26) comprises one or more p-type gaps (18) that electrically connect the p-type well (28) to the p-type substrate (12). The use of the gap (18) improves cross-talk suppression in mixed-mode integrated circuits at higher frequencies, for example greater than 50 MHz.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: April 22, 1997
    Assignee: Motorola, Inc.
    Inventors: David J. Monk, Kuntal Joardar
  • Patent number: 5478761
    Abstract: A complementary field effect element develops an intensified latch-up preventive property even if the distance between the emitters of parasitic transistors is short, and a method of producing the same are disclosed. The complementary field effect element includes a high concentration impurity layer (16) formed by ion implantation in the boundary region between a P-well (2) and an N-well (3) which are formed adjacent each other on the main surface of a semiconductor substrate (1). Therefore, carriers passing through the boundary region between the P-well (2) and the N-well (3) are decreased, so that even if the distance between the emitters (4, 5) of parasitic transistors is short, there is obtained an intensified latch-up preventive property.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: December 26, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shigeki Komori, Katsuhiro Tsukamoto
  • Patent number: 5408125
    Abstract: A method of manufacturing semiconductor devices with increased operating voltages is described. A dopant of a second conductivity type is implanted into a region of a first epitaxial layer of the first conductivity type to form a buried layer. A substantially smaller dosage of a faster-diffusing dopant of the second conductivity type is then implanted into the buried layer region. The second epitaxial layer of the first conductivity type is formed over the first epitaxial layer. A region of the second epitaxial layer overlying the doped region of the first epitaxial layer is implanted with a dopant of the second conductivity type and diffused to form a doped well. The faster-diffusing dopant diffuses upward to make good electrical contact with the doped well diffusing downward from the surface. The lateral diffusion of the faster-diffusing dopant can be contained, so that lateral spacing design rules do not have to be increased.
    Type: Grant
    Filed: January 4, 1994
    Date of Patent: April 18, 1995
    Assignee: Texas Instruments Incorporated
    Inventors: John P. Erdeljac, Louis N. Hutter