With Separate Light Detector Integrated On Chip With Regenerative Switching Device Patents (Class 257/114)
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Patent number: 10475992Abstract: A miniature oxygen sensor makes use of paramagnetic properties of oxygen gas to provide a fast response time, low power consumption, improved accuracy and sensitivity, and superior durability. The miniature oxygen sensor disclosed maintains a sample of ambient air within a micro-channel formed in a semiconductor substrate. O2 molecules segregate in response to an applied magnetic field, thereby establishing a measureable Hall voltage. Oxygen present in the sample of ambient air can be deduced from a change in Hall voltage with variation in the applied magnetic field. The magnetic field can be applied either by an external magnet or by a thin film magnet integrated into a gas sensing cavity within the micro-channel. A differential sensor further includes a reference element containing an unmagnetized control sample. The miniature oxygen sensor is suitable for use as a real-time air quality monitor in consumer products such as smart phones.Type: GrantFiled: October 13, 2017Date of Patent: November 12, 2019Assignee: STMicroelectronics Pte LtdInventors: Olivier Le Neel, Ravi Shankar
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Patent number: 9978728Abstract: A display apparatus and a fabricating method thereof are provided. The display apparatus includes a substrate, a light emitting diode, a first bump, a first insulating layer and a second insulating layer. The light emitting diode has a first surface and a second surface opposite each other, wherein the first surface faces the substrate. The light emitting diode is bonded to the substrate through the first bump. The first insulating layer is disposed on a periphery of the first bump and the light emitting diode, and contacts the first bump and the first surface. The second insulating layer is disposed on the substrate and surrounds at least a portion of the first insulating layer.Type: GrantFiled: May 24, 2017Date of Patent: May 22, 2018Assignees: Innolux Corporation, Advanced Optoelectronics Technology Inc.Inventors: Chun-Hsien Lin, Tsau-Hua Hsieh, Po-Min Tu, Tzu-Chien Hung, Chien-Chung Peng, Shih-Cheng Huang
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Patent number: 9263432Abstract: A high voltage semiconductor device is provided, comprising a high voltage metal-oxide-semiconductor transistor (HVMOS), and a normally-on low voltage metal-oxide-semiconductor transistor (LVMOS) electrically connected to the HVMOS. The HVMOS has a first collector and a first emitter, and the LVMOS has a second collector and a second emitter, wherein the second collector of the LVMOS is electrically connected to the first emitter of the HVMOS. The LVMOS electrically connected to the HVMOS provides an electro-static discharge bipolar transistor (ESD BJT), such as a NPN-type ESD BJT.Type: GrantFiled: May 6, 2014Date of Patent: February 16, 2016Assignee: MACRONIX INTERNATIONAL CO., LTD.Inventors: Hsin-Liang Chen, Wing-Chor Chan, Shyi-Yuan Wu
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Patent number: 8968704Abstract: Provided is a fluorescent labeling material, including zinc oxide nanoparticles each surface-modified with an organic compound having an amino group placed at an outer end thereof. Also provided is a fluorescent labeling agent to be used in vivo or in vitro, including the fluorescent labeling material, in which: EDC or the like is bound thereto through the amino group; and a substance capable of selectively binding to a target to be fluorescently labeled, such as an antibody, is linked thereto.Type: GrantFiled: April 29, 2011Date of Patent: March 3, 2015Assignee: National University Corporation Shimane UniversityInventors: Moriyuki Sato, Morihiko Nakamura
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Patent number: 8836096Abstract: An image sensor unit includes a fixed substrate, a movable substrate, an actuate section including an actuator for moving the movable substrate against the fixed substrate, an image sensor having an imaging surface on a front surface of the image sensor, and at least, a part of a rear surface of the image sensor being directly fixed onto the movable substrate, an external electrical connecting member for conducting a transmission and reception of signals between the actuate section and the image sensor and an outside of the image sensor unit, and an internal electrical connecting member electrically connects the actuate section, the image sensor and the external connection wiring, wherein the actuate section, the image sensor, the internal connection wiring and a part of the external connection wiring are sealed into the same space.Type: GrantFiled: February 16, 2012Date of Patent: September 16, 2014Assignee: Konica Minolta Opto, Inc.Inventors: Akira Kosaka, Masataka Hamada, Satoshi Yokota, Yoshihiro Hara, Yasutaka Tanimura
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Patent number: 8580915Abstract: A micro electromechanical system having incorporated therein a composition of matter consisting of a stable solution containing a polymer derived from a solution of a polymer containing trace metals, the derived method comprising the steps of: (a) providing a polymer solution containing a polymer, a first solvent and trace metals; (b) passing said polymer solution through an acidic cation ion exchange material to remove said trace metals therefrom and thereby forming a polymer solution containing free acid radicals; (c) precipitating said polymer from said polymer solution of step b by contacting with a second solvent wherein the polymer is substantially insoluble therein; (d) filtering said solution and said second solvent to thereby form a solid polymer cake; (e) contacting said cake from step d with sufficient quantities of additional said second solvent in order to remove free acid radicals therefrom; (f) removing any residual first and second solvents from said polymer to form said stable polymer.Type: GrantFiled: May 23, 2012Date of Patent: November 12, 2013Assignee: E. I. du Pont de Nemours and CompanyInventors: William Richard Russell, John Anthony Schultz
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Patent number: 8536617Abstract: A thyristor device includes a semiconductor body and a conductive anode. The semiconductor body has a plurality of doped layers forming a plurality of dopant junctions and includes an optical thyristor, a first amplifying thyristor, and a switching thyristor. The conductive anode is disposed on a first side of the semiconductor body. The optical thyristor is configured to receive incident radiation to generate a first electric current, and the first amplifying thyristor is configured to increase the first electric current from the optical thyristor to at least a threshold current. The switching thyristor switches to the conducting state in order to conduct a second electric current from the anode and through the semiconductor body.Type: GrantFiled: December 16, 2011Date of Patent: September 17, 2013Assignee: General Electric CompanyInventors: Alexey Vert, Ahmed Elasser, Arthur Stephen Daley, Stanislav I Soloviev, Peter Almern Losee
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Patent number: 8330146Abstract: An organic photodetector including a substrate, a first electrode, an insulation layer, an organic layer, and a second electrode is provided. The first electrode is disposed on the substrate. The insulation layer is disposed on the first electrode. The organic layer is disposed on the substrate and the insulation layer and covers a side surface of the insulation layer and a side surface of the first electrode. The second electrode is disposed on the organic layer and located above the insulation layer.Type: GrantFiled: July 19, 2007Date of Patent: December 11, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Tzu-Yueh Chang, Po-Tsung Lee, Szu-Yuan Chen
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Patent number: 8283679Abstract: The present invention provides a semiconductor device having an integrated circuit formed by a low cost glass substrate, which can respond to the increase of an amount of information, and which offers high performance at high speed.Type: GrantFiled: June 29, 2004Date of Patent: October 9, 2012Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Ryoji Nomura, Hiroko Abe, Mikio Yukawa, Yasuyuki Arai
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Patent number: 8188604Abstract: A semiconductor device capable of preventing a crack from occurring in an electrode layer exposed through a through hole which is formed in a semiconductor substrate and a method of manufacturing the semiconductor device. In exemplary embodiments, a through via and an opening in a passivation film are disposed so that an opening diameter of the through via is larger than an opening diameter of the opening of the passivation film, and an opening edge of the through via is located outside an opening edge of the opening of the passivation film. In other embodiments, the through via and the opening of the passivation film are disposed so that the opening edge of the through via is disposed at a location which does not overlap with the opening edge (opening edge of a portion in contact with a pad electrode) of the opening of the passivation film.Type: GrantFiled: March 2, 2009Date of Patent: May 29, 2012Assignee: Oki Semiconductor Co., Ltd.Inventor: Shigeru Yamada
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Patent number: 8145020Abstract: A semiconductor device includes a direct light-triggered thyristor triggered by an optical gate signal, a first optical fiber connected to the direct light-triggered thyristor and through which the optical gate signal is transmitted, a second optical fiber used to extend the first optical fiber, and a inter-optical-fiber relaying unit configured to connect the first optical fiber to the second optical fiber and to input the optical gate signal output from the second optical fiber to the first optical fiber.Type: GrantFiled: October 22, 2009Date of Patent: March 27, 2012Assignee: Toshiba Mitsubishi—Electric Industrial Systems CorporationInventor: Takafumi Fujimoto
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Patent number: 8124953Abstract: A sensor device and method. One embodiment provides a first semiconductor chip having a sensing region. A porous structure element is attached to the first semiconductor chip. A first region of the porous structure element faces the sensing region of the first semiconductor chip. An encapsulation material partially encapsulates the first semiconductor chip and the porous structure element.Type: GrantFiled: March 12, 2009Date of Patent: February 28, 2012Assignee: Infineon Technologies AGInventors: Klaus Elian, Georg Meyer-Berg, Horst Theuss
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Patent number: 7989968Abstract: A method, structure, system of aligning a substrate to a photomask. The method comprising: directing light through a clear region of the photomask in a photolithography tool, through a lens of the tool and onto a set of at least three diffraction mirror arrays on the substrate, each diffraction mirror array of the set of at least three diffraction mirror arrays comprising a single row of mirrors, all mirrors in any particular diffraction mirror array spaced apart a same distance, mirrors in different diffraction mirror arrays spaced apart different distances; measuring an intensity of light diffracted from the set of at least three diffraction mirror arrays onto an array of photo detectors; and adjusting a temperature of the photomask or photomask and lens based on the measured intensity of light.Type: GrantFiled: September 23, 2010Date of Patent: August 2, 2011Assignee: International Business Machines CorporationInventors: Axel A. Granados, Benjamin A. Fox, Nathaniel J. Gibbs, Andrew B. Maki, Trevor J. Timpane
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Patent number: 7956433Abstract: The invention provides an image detector capable of improving the quality of detected images by reducing electronic noise, the image detector comprising, a plurality of scan lines disposed in parallel, a plurality of data lines provided so as to cross with the scan lines, thin film transistors connected with the scan and data lines and provided in matrix, sensor sections connected to the thin film transistor and provided in a matrix and a plurality of common lines disposed so as to apply bias voltage commonly to the sensor sections provided in matrix. Each of the scan lines, data lines and common lines are formed by metal layers different from each other and provided with insulating film(s) disposed therebetween.Type: GrantFiled: December 20, 2007Date of Patent: June 7, 2011Assignee: FUJIFILM CorporationInventors: Yoshihiro Okada, Takuya Yoshimi
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Patent number: 7888761Abstract: An electron detector (30) for detection of electrons comprises a semiconductor wafer (11) having a central portion (12) with a thickness of at most 150 ?m, preferably at most 100 ?m, formed by etching an area of a thicker wafer. On opposite sides of the central portion (12) there are n-type and p-type contacts (16, 31). In operation, a reverse bias is applied across the contacts (16, 31) and electrons incident on the layer (15) of intrinsic semiconductor material between the contacts (16, 31) generate electron-hole pairs which accelerate towards the contacts (16, 31) where they may detected as a signal. Conductive terminals (24, 32) contact the contacts (16, 31) and are connected to a signal processing circuit in IC chips (28, 37) mounted to the semiconductor wafer (11) outside the active area of the detector (30). The contacts (16, 31) are shaped as arrays of strips extending orthogonally on the two sides of the intrinsic layer (15) to provide two-dimensional spatial resolution.Type: GrantFiled: March 30, 2009Date of Patent: February 15, 2011Assignee: Isis Innovation LimitedInventors: Rudiger Reinhard Meyer, Angus Ian Kirkland
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Patent number: 7808004Abstract: A light emitting diode package structure having a heat-resistant cover and a method of manufacturing the same include a base, a light emitting diode chip, a plastic shell, and a packaging material. The plastic shell is in the shape of a bowl and has an injection hole thereon. After the light emitting diode chip is installed onto the base, the plastic shell is covered onto the base to fully and air-tightly seal the light emitting diode chip, and the packaging material is injected into the plastic shell through the injection hole until the plastic shell is filled up with the packaging material to form a packaging cover, and finally the plastic shell is removed to complete the LED package structure.Type: GrantFiled: March 17, 2006Date of Patent: October 5, 2010Assignee: Edison Opto CorporationInventors: Tsung-Ting Sun, Hung-Ta Laio, Hung-Hsun Chou, Tz-Shiuan Yan, Kuo-Shih Hsu
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Patent number: 7782921Abstract: An electrical-optical coupling and detecting device. An apparatus according to an embodiment of the present invention includes a reflective surface defined on semiconductor material. The reflective surface is to reflect an incident optical beam towards an optical destination. An optical detector is monolithically integrated in the reflective surface of the semiconductor material. The optical detector arranged in the reflective surface of the semiconductor material is to detect the incident optical beam.Type: GrantFiled: March 28, 2005Date of Patent: August 24, 2010Assignee: Intel CorporationInventors: Andrew C. Alduino, Mario J. Paniccia, Rami Cohen, Assia Barkai, Ansheng Liu
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Patent number: 7715162Abstract: The present invention provides a method and apparatus for providing electro-static discharge (ESD) protection between a first and a second circuit node. One embodiment of the ESD protection circuit includes one or more steering diodes that generate electromagnetic radiation and couple the first circuit node to ground in response to a voltage applied to the first circuit node. The ESD protection circuit also includes a latch circuit that couples the first circuit node to ground in response to the electromagnetic radiation generated by the steering diode(s).Type: GrantFiled: March 12, 2008Date of Patent: May 11, 2010Assignee: Zarlink Semiconductor (US) Inc.Inventor: Thomas Joseph Krutsick
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Patent number: 7696529Abstract: The present invention provides a transflective liquid crystal display device having at least one switching element having at least a drain electrode, a first passivation layer formed over the switching element with the first passivation layer defining a drain contact hole exposing a first portion the drain electrode, a transparent pixel electrode contacting the drain electrode through the drain contact hole and defining a contact opening that exposes a second portion of the drain electrode, the contact opening being defined in a portion of the transparent pixel electrode in the drain contact hole, and a reflective pixel electrode contacting the transparent pixel electrode in the drain contact hole and contacting the drain electrode through the contact opening.Type: GrantFiled: June 12, 2001Date of Patent: April 13, 2010Assignee: LG Display Co., Ltd.Inventors: Kyo-Seop Choo, Ki-Bok Park
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Patent number: 7693360Abstract: On the back surface of a transparent plate having a light extracting part for outputting lights to the outside, an electrode for wiring, and an electrode for an electromagnetic shield, an optical device is flip-chip mounted right under the light extracting part, an a driver IC is flip-chip mounted at a desired position with metal bumps. When currents driving the optical device flow from the driver IC according to an electric logical signal from the outside, an optical signal is emitted from the optical device, and is output to the outside through the light extracting part. The light extracting part may be provided with a light coupling material or an optical axis converter.Type: GrantFiled: April 18, 2003Date of Patent: April 6, 2010Assignee: NEC CorporationInventors: Takanori Shimizu, Takara Sugimoto, Jun-ichi Sasaki, Kazuhiko Kurata
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Patent number: 7622753Abstract: A component formed in a substrate of a first conductivity type, having two inputs and two outputs and: a first diode having its anode connected to a first input and having its cathode connected to a first output; a second diode having its anode connected to a second output and having its cathode connected to the first input; a one-way switch having its anode connected to the first output, its cathode being connected to the second output; and a third diode having its anode connected to the second output, its cathode being connected to the first output; the first, second, and third diodes being formed in a first portion of the substrate separated by a wall of the second conductivity type from a second substrate portion comprising the switch.Type: GrantFiled: August 30, 2006Date of Patent: November 24, 2009Assignee: STMicroelectronics S.A.Inventors: Samuel Menard, Benjamin Cheron, Arnaud Edet
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Patent number: 7605440Abstract: A pixel having a well-isolated charge storage region or floating diffusion region may be obtained by providing a separate P-well around the storage region or floating diffusion region. In one embodiment, a separate P-well entirely encases the storage region and is in contact with the storage region. This P-well provides an electrical barrier for preventing electrons that are generated elsewhere in the pixel from contaminating the storage region. In another embodiment, a first separate P-well encases and is in contact with the storage region and a second separate P-well encases and is in contact with the floating diffusion region.Type: GrantFiled: April 7, 2006Date of Patent: October 20, 2009Assignee: Aptina Imaging CorporationInventor: Parker Altice
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Patent number: 7592654Abstract: CMOS image sensor having high sensitivity and low crosstalk, particularly at far-red to infrared wavelengths, and a method for fabricating a CMOS image sensor. A CMOS image sensor has a substrate, an epitaxial layer above the substrate, and a plurality of pixels extending into the epitaxial layer for receiving light. The image sensor also includes at least one of a horizontal barrier layer between the substrate and the epitaxial layer for preventing carriers generated in the substrate from moving to the epitaxial layer, and a plurality of lateral barrier layers between adjacent ones of the plurality of pixels for preventing lateral diffusion of electrons in the epitaxial layer.Type: GrantFiled: November 15, 2007Date of Patent: September 22, 2009Assignee: Aptina Imaging CorporationInventors: Sandeep R. Bahl, Fredrick P. LaMaster, David W. Bigelow
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Patent number: 7554170Abstract: A photosensor includes a plurality of photosensitive regions including a first photosensitive region connected to a first voltage reference, and at least one additional photosensitive region. A signal collector is connected to the first photosensitive region. At least one switching device is for switching the at least one additional photosensitive region between the first voltage reference and a second voltage reference that is less than the first voltage reference, and for reversibly connecting the at least one additional photosensitive region to the signal collector so that the photosensor is variably responsive to different light levels.Type: GrantFiled: May 17, 2007Date of Patent: June 30, 2009Assignee: STMicroelectronics (Research & Development) LimitedInventor: Jeffrey Raynor
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Patent number: 7525131Abstract: Disclosed is a photoelectric surface including: a first group III nitride semiconductor layer that produces photoelectrons according to incidence of ultraviolet rays; and a second group III nitride semiconductor layer provided adjacent to the first group III nitride semiconductor layer and made of a thin-film crystal having c-axis orientation in a thickness direction, the second group III nitride semiconductor layer having an Al composition higher than that of the first group III nitride semiconductor layer.Type: GrantFiled: August 29, 2006Date of Patent: April 28, 2009Assignees: National University Corporation Shizuoka University, Hamamatsu Photonics K.K.Inventors: Masatomo Sumiya, Shunro Fuke, Tokuaki Nihashi, Minoru Hagino
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Patent number: 7492988Abstract: Planar AWG circuits and systems are disclosed that use air trench bends to increase planar circuit compactness.Type: GrantFiled: December 4, 2007Date of Patent: February 17, 2009Inventors: Gregory P. Nordin, Yongbin Lin, Seunghyun Kim
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Patent number: 7397066Abstract: Microelectronic imagers with curved image sensors and methods for manufacturing curved image sensors. In one embodiment, a microelectronic imager device includes an imager die having a substrate, a curved microelectronic image sensor having a face with a convex and/or concave portion at one side of the substrate, and integrated circuitry in the substrate operatively coupled to the image sensor. The imager die can further include external contacts electrically coupled to the integrated circuitry and a cover over the curved image sensor.Type: GrantFiled: August 19, 2004Date of Patent: July 8, 2008Assignee: Micron Technology, Inc.Inventor: Steven D. Oliver
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Patent number: 7214971Abstract: A semiconductor light-receiving device has a substrate including upper, middle and lower regions in its front side. A p-type layer on the lower region has a top surface including a portion on a level with the middle region. An electrode covers at least part of the boundary between the portion of the p-type layer and the middle region. An n-type layer on the p-type layer has a top surface including a portion on a level with the upper region. Another electrode covers at least part of the boundary between the portion of the n-type layer and the upper region.Type: GrantFiled: June 10, 2004Date of Patent: May 8, 2007Assignee: Hamamatsu Photonics K.K.Inventors: Minoru Niigaki, Kazutoshi Nakajima
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Patent number: 7157747Abstract: A channel isolation region 42 is formed over the entire width of an N-type silicon substrate 41, and photothyristors, in each of which an anode diffusion region 43, a P-gate diffusion region 44, a cathode diffusion region 45 are formed parallel to the channel isolation region 42 over almost the entire width of the N-type silicon substrate 41, are formed in a left-hand portion 40a and in a right-hand portion 40b and are wired inversely parallel. Thus, the inter-channel movement of residual holes during commutation is restrained by the channel isolation region 42, by which commutation failure is suppressed to improve a commutation characteristic. Further, an operating current large enough for controlling a load current of approx. 0.2 A is obtained although a chip is divided by the channel isolation region 42. Therefore, using this bidirectional photothyristor chip makes it possible to implement an inexpensive SSR with a main thyristor eliminated.Type: GrantFiled: December 10, 2003Date of Patent: January 2, 2007Assignee: Sharp Kabushiki KaishaInventors: Mitsuru Mariyama, Masaru Kubo
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Patent number: 7122840Abstract: An image sensor device and fabrication method thereof wherein a substrate having at least one shallow trench isolation structure therein is provided. At least one photosensor and at least one light emitting element, e.g., such as MOS or LED, are formed in the substrate. The photosensor and the light emitting element are isolated by the shallow trench isolation structure. An opening is formed in the shallow trench isolation structure to expose part of the substrate. An opaque shield is formed in the opening to prevent photons from the light emitting element from striking the photosensor.Type: GrantFiled: June 17, 2004Date of Patent: October 17, 2006Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Tzu-Hsuan Hsu, Dun-Nian Yaung, Yean-Kuen Fang
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Patent number: 7102185Abstract: An interline transfer type image sensing device that can be operated at high speed and with low image smear is described. The device incorporates a refractory metal layer which is used for both a light shield over the vertical charge transfer region and as a wiring layer for low resistance strapping of poly crystalline silicon (polysilicon) gate electrodes for the vertical charge transfer region. Plugs provided by a separate metallization layer connect the refractory light shield to the polysilicon gate electrode. These plugs allow high temperature processing after refractory light shield patterning for improved sensor performance without degradation of the polysilicon gate electrode or the refractory lightshield layer.Type: GrantFiled: June 21, 2004Date of Patent: September 5, 2006Assignee: Eastman Kodak CompanyInventors: David N. Nichols, David L. Losee, Christopher Parks
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Patent number: 7057214Abstract: Semiconductor switches, such as thyristors, may be light activated by introducing the light into the switch via a groove having a sloped surface to receive the triggering light. The use of a sloped surface increases the surface path length between points of different electrical potential in the groove and, therefore, reduces the likelihood of electrical breakdown on the groove wall. In one particular embodiment, a light-activated thyristor includes a semiconductor anode layer, an n-base layer, a p-base layer and a semiconductor cathode layer disposed parallel to a thyristor plane. A thyristor axis lies perpendicular to the thyristor plane. A groove having a light refracting side wall extends into the thyristor from the anode layer. A portion of the light refracting side wall is disposed non-parallel to the thyristor plane and to the thyristor axis, and extends in the n-drift layer.Type: GrantFiled: July 1, 2003Date of Patent: June 6, 2006Assignee: Optiswitch Technology CorporationInventors: David M. Giorgi, Tajchai Navapanich
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Patent number: 6809355Abstract: A solid-state imaging device having a gate structure including an oxide film and a nitride film includes upper layer films (for example, a planarization film, an insulating film, and a protective film) allowing ultraviolet rays having a wavelength of 400 nm or less to pass therethrough; and a metal made shield film or an organic film capable of absorbing the ultraviolet rays formed in such a manner as to cover a region of the gate structure (for example, an output gate and a reset gate), excluding a light receiving portion and a transfer portion, of the solid-state imaging device. With this configuration, it is possible to prevent the shift of a threshold voltage Vth, and hence to enhance the reliability of the transfer or reset of electric charges.Type: GrantFiled: March 30, 2001Date of Patent: October 26, 2004Assignee: Sony CorporationInventor: Kazushi Wada
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Patent number: 6800877Abstract: An apparatus and method for electrically connecting semi-conductor devices is disclosed. The apparatus and method employs a vacuum chamber and first and second semi-conductor components. The first and second semi-conductor components are coupled to a vacuum chamber and free space electron transmitters and receivers. The transmitters are configured to transmit a signals between the semi-conductor components.Type: GrantFiled: June 6, 2002Date of Patent: October 5, 2004Assignee: Exaconnect Corp.Inventors: Michel N. Victor, Aris Silzars
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Patent number: 6770911Abstract: Large area silicon carbide devices, such as light-activated silicon carbide thyristors, having only two terminals are provided. The silicon carbide devices are selectively connected in parallel by a connecting plate. Silicon carbide thyristors are also provided having a portion of the gate region of the silicon carbide thyristors exposed so as to allow light of an energy greater than about 3.25 eV to activate the gate of the thyristor. The silicon carbide thyristors may be symmetric or asymmetrical. A plurality of the silicon carbide thyristors may be formed on a wafer, a portion of a wafer or multiple wafers. Bad cells may be determined and the good cells selectively connected by a connecting plate.Type: GrantFiled: September 12, 2001Date of Patent: August 3, 2004Assignee: Cree, Inc.Inventors: Anant Agarwal, Sei-Hyung Ryu, John W. Palmour
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Patent number: 6765290Abstract: A diode coupling-based arrangement back-biases each of the semiconductor substrates of a plurality of integrated circuits at the maximum (e.g., most negative) DC voltage applied to any individual circuit, irrespective of a potential variation in applied DC voltages. Each semiconductor chip/substrate includes an auxiliary terminal to which each DC voltage terminal for that chip is diode-coupled. The auxiliary voltage terminal is connected to the underside biasing and thermal dissipation pad of the substrate. When multiple packages are mounted and conductively joined to a shared metallic dissipation region of a support substrate, all auxiliary voltage terminals will be connected in common, so as to back-bias each semiconductor substrate to the most maximum (e.g., most negative) of all applied DC voltages.Type: GrantFiled: April 2, 2002Date of Patent: July 20, 2004Assignee: Intersil Americas Inc.Inventors: Leonel E. Enriquez, Douglas L. Youngblood
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Patent number: 6548352Abstract: A multi-layered gate for use in a CMOS or CCD imager formed with a second gate at least partially overlapping it. The multi-layered gate is a complete gate stack having an insulating layer, a conductive layer, an optional silicide layer, and a second insulating layer, and has a second gate formed adjacent to it which has a second conductive layer that extends at least partially over the surface of the multi-layered gate. The multi-layered gate has improved insulation, thereby resulting in fewer shorts between the conductive layers of the two gates. Also disclosed are processes for forming the multi-layered gate and the overlapping gate.Type: GrantFiled: October 12, 2000Date of Patent: April 15, 2003Assignee: Micron Technology Inc.Inventor: Howard E. Rhodes
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Publication number: 20020047132Abstract: A semiconductor device for controlling electricity includes:Type: ApplicationFiled: February 26, 2001Publication date: April 25, 2002Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Masakazu Fukada, Hiroshi Nishibori, Takanobu Yoshida, Naoki Yoshimatsu, Nobuyoshi Kimoto, Haruo Takao
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Publication number: 20010028066Abstract: The invention provides a signal processing apparatus comprising clamp capacitance means for receiving, at one electrode thereof, first and second signals outputted from a signal source, a signal transfer transistor of which one main electrode is connected to an other electrode of the clamp capacitance means, signal accumulating capacitance means connected to an other main electrode of the signal transfer transistor, and reset means for fixing the potential of the signal accumulating capacitance means, wherein the potential of the signal accumulating capacitance means is fixed by the reset means while the first signal is outputted from the signal source and the signal accumulating capacitance means is maintained in a floating state while the second signal is outputted from the signal source, and the signal transfer transistor is controlled in such a manner that the potential of the main electrode of the signal transfer transistor and that of the other main electrode thereof show different saturation operationsType: ApplicationFiled: February 27, 2001Publication date: October 11, 2001Inventors: Mahito Shinohara, Tomoyuki Noda
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Patent number: 6144045Abstract: High power thyristor-type devices comprising a first layer of p-type doped semiconductor alloy aluminum gallium nitride, a second layer of n-type doped aluminum gallium nitride with lower aluminum content than the first layer, a third layer of p-type doped aluminum gallium nitride with a higher aluminum content than the second layer, and a fourth layer of aluminum gallium nitride of n-type doping. The difference in hole and electron energies (band offsets) across the interface between aluminum gallium nitride and gallium nitride are such that hole and electron transfer are enhanced from aluminum gallium nitride to gallium nitride, or hole and electron transfer are suppressed from gallium nitride to aluminum gallium nitride. Aluminum content in layers 1 and 2 is chosen such that hole transfer in the forward biased conduction state of the device is enhanced, and suppressed in the reverse biased blocking state of the device.Type: GrantFiled: April 2, 1999Date of Patent: November 7, 2000Assignee: California Institute of TechnologyInventors: Zvonimir Z. Bandic, Eric C. Piquette, Thomas C. McGill
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Patent number: 5929474Abstract: An active matrix OED array includes an array area defined on a semiconductor substrate defining rows and columns of pixels and driver areas spaced from the array area with driver circuits including row drivers coupled to row buses and column drivers coupled to column buses formed in the driver areas. An active control circuit and an OED are formed in each pixel of the array area and coupled to a row and a column bus adjacent each pixel. A second substrate is formed of light transmissive material and includes externally accessible electrical connectors coupled to the driver circuits. The semiconductor substrate includes a first bump pad encircling the array area and the second substrate includes a mating second bump pad with the first and second bump pads engaged to seal the array area.Type: GrantFiled: March 10, 1997Date of Patent: July 27, 1999Assignee: Motorola, Inc.Inventors: Rong-Ting Huang, Hsing-Chung Lee, Song Q. Shi
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Patent number: 5780877Abstract: A break-over photodiode, designed as a light-sensitive thyristor, can be stacked using a series connection with a plurality of break-over photodiodes, such stacking representing a high-voltage break-over diode. The break-over photodiode can be triggered by lateral illumination in an edge zone, and includes a gate-layer resistivity under the emitter which is greater in an edge zone of the break-over photodiode than in the central zone of the break-over photodiode. The light sensitivity of the laterally illuminatable break-over photodiode is increased by a greater gate-layer resistivity in the edge zone as compared to the central zone.Type: GrantFiled: February 6, 1997Date of Patent: July 14, 1998Assignee: Robert Bosch GmbHInventors: Bernd Bireckoven, Dirk Hoheisel, Ning Qu
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Patent number: 5677552Abstract: The invention provides an optical functioning device which emits and receives light, and a driver circuit for controlling the device with light. In the device, elements, in which semiconductor multilayer-film reflecting mirrors are provided at both the upper and lower ends of a pnpn structure of semiconductors and which have light-emitting and light-receiving functions to act as optical resonators, are integrated two-dimensionally each with electrodes which are provided for the and the transistors act as phototransistors into which light is introduced.Type: GrantFiled: February 26, 1993Date of Patent: October 14, 1997Assignee: NEC CorporationInventor: Ichiro Ogura
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Patent number: 5663580Abstract: A semiconductor device comprises a semiconductor layer of SiC having an active area through which the device is adapted to be triggered by light incident thereon and means for generating and emitting light with an energy exceeding the bandgap, being the energy difference between the conduction band and the valence band, of the SiC-layer of the active area. The generating means is directly integrated in the device by being placed so as to cover substantial portions of the active area, and being made of a Group 3B-nitride having a larger bandgap that of the SiC of the SiC-layer.Type: GrantFiled: March 15, 1996Date of Patent: September 2, 1997Assignee: ABB Research Ltd.Inventors: Christopher Harris, Mietek Bakowski
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Patent number: 5406096Abstract: A high voltage device (10) having MOS input characteristics. A low voltage MOS transistor (12) is provided which has a source (18), a drain (22), and a gate (25). A high voltage transistor (14) is also provided which has a source (20), a drain (24), and gate (16). The source (18) of the low voltage MOS transistor (12) is connected to the gate (16) of the high voltage transistor (14). The drain (22) of the low voltage MOS transistor (12)is connected to the source (20)of the high voltage transistor The low voltage MOS transistor (12) may have a silicon substrate and the substrate of the high voltage transistor (14)may comprise silicon, silicon carbide, or gallium arsenide.Type: GrantFiled: February 9, 1994Date of Patent: April 11, 1995Assignee: Texas Instruments IncorporatedInventor: Satwinder Malhi
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Patent number: 5345094Abstract: Disclosed is a semiconductor device comprising an output Triode AC switch with a vertical structure, which is provided in a silicon substrate and has a gate, a first output terminal and a second output terminal, and an input/driving photo Triode AC switch, which is provided in the substrate and has a light-receiving portion, a first terminal connected to the gate and a second terminal connected to the second output terminal. The output Triode AC switch with a vertical structure is turned on when light is input to the photo Triode AC switch.Type: GrantFiled: July 6, 1993Date of Patent: September 6, 1994Assignee: Kabushiki Kaisha ToshibaInventors: Yasunori Usui, Shinjiro Yano
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Patent number: 5245203Abstract: A photoelectric converter of semiconductor transistor comprises two semiconductor regions of same electroconductive type and a semiconductor region of opposite electroconductive type to that of the two semiconductor regions. The semiconductor region of opposite electroconductive type is irradiated with a light. An amplified power is output from at least one of the two semiconductor regions of same electroconductive type. The semiconductor region of the opposite electroconductive type comprises a semiconductor region that accumulates a charge generated by light input and a semiconductor region acting as a control electrode region for the semiconductor transistor.Type: GrantFiled: March 31, 1992Date of Patent: September 14, 1993Assignee: Canon Kabushiki KaishaInventors: Masakazu Morishita, Shin Kikuchi