For The Formation Of Pn Junction Without Ad Dition Of Impurities (epo) Patents (Class 257/E21.325)
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Patent number: 9041120Abstract: A transistor device comprises: at least one individual transistor cell arranged in a transistor cell field on a semiconductor body, each individual transistor cell comprising a gate electrode; a gate contact, electrically coupled to the gate electrodes of the transistor cells and configured to switch on the at least one transistor cell by providing a gate current in a first direction and configured to switch off the at least one transistor cell by providing a gate current in a second direction, the second direction being opposite to the first direction; at least one gate-resistor structure monolithically integrated in the transistor device, the gate-resistor structure providing a first resistance for the gate current when the gate current flows in the first direction, and providing a second resistance for the gate current, which is different from the first resistance, when the gate current flows in the second direction.Type: GrantFiled: July 25, 2013Date of Patent: May 26, 2015Assignee: Infineon Technologies AGInventors: Stephan Voss, Peter Tuerkes, Holger Huesken
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Patent number: 8907375Abstract: A method of manufacturing a semiconductor device includes the steps of forming a gate electrode of a transistor on an insulator layer on a surface of a semiconductor substrate, forming an isolation region by performing ion implantation of an impurity of a first conductivity type into the semiconductor substrate, forming a lightly doped drain region by performing, after forming a mask pattern including an opening portion narrower than a width of the gate electrode on an upper layer of the gate electrode of the transistor, ion implantation of an impurity of a second conductivity type near the surface of the semiconductor substrate with the mask pattern as a mask, and forming a source region and a drain region of the transistor by performing ion implantation of an impurity of the second conductivity type into the semiconductor substrate after forming the gate electrode of the transistor.Type: GrantFiled: March 29, 2013Date of Patent: December 9, 2014Assignee: Sony CorporationInventor: Masashi Yanagita
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Patent number: 8906811Abstract: A silicon/carbon alloy may be formed in drain and source regions, wherein another portion may be provided as an in situ doped material with a reduced offset with respect to the gate electrode material. For this purpose, in one illustrative embodiment, a cyclic epitaxial growth process including a plurality of growth/etch cycles may be used at low temperatures in an ultra-high vacuum ambient, thereby obtaining a substantially bottom to top fill behavior.Type: GrantFiled: October 13, 2011Date of Patent: December 9, 2014Assignee: Advanced Micro Devices, Inc.Inventors: Thorsten Kammler, Andy Wei, Ina Ostermay
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Patent number: 8513719Abstract: A semiconductor device includes an N type well region in a P type substrate. A source region of a MOSFET is laterally separated from a boundary of the well region, which includes the drain of the MOSFET. An insulated gate of the MOSFET extends laterally from the source region to at least just past the boundary of the well region. A polysilicon layer, which forms a first plate of a capacitive anti-fuse, is insulated from an area of the well region, which forms the second plate of the anti-fuse. The anti-fuse is programmed by application of a voltage across the first and second capacitive plates sufficient to destroy at least a portion of the second dielectric layer, thereby electrically shorting the polysilicon layer to the drain of the HVFET.Type: GrantFiled: April 23, 2012Date of Patent: August 20, 2013Assignee: Power Integrations, Inc.Inventors: Sujit Banerjee, Martin H. Manley
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Patent number: 8426287Abstract: A method of manufacturing a semiconductor device includes the steps of forming a gate electrode of a transistor on an insulator layer on a surface of a semiconductor substrate, forming an isolation region by performing ion implantation of an impurity of a first conductivity type into the semiconductor substrate, forming a lightly doped drain region by performing, after forming a mask pattern including an opening portion narrower than a width of the gate electrode on an upper layer of the gate electrode of the transistor, ion implantation of an impurity of a second conductivity type near the surface of the semiconductor substrate with the mask pattern as a mask, and forming a source region and a drain region of the transistor by performing ion implantation of an impurity of the second conductivity type into the semiconductor substrate after forming the gate electrode of the transistor.Type: GrantFiled: November 12, 2010Date of Patent: April 23, 2013Assignee: Sony CorporationInventor: Masashi Yanagita
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Patent number: 8258559Abstract: The present invention relates to a technology for reducing dark current noise by discharging electrons accumulated on a surface of an image sensor photodiode. In an N-type or P-type photodiode, a channel is formed between the photodiode and a power voltage terminal, so that electrons (or holes) accumulated on a surface of the photodiode are discharged to the power voltage terminal through the channel.Type: GrantFiled: November 10, 2008Date of Patent: September 4, 2012Assignee: Siliconfile Technologies Inc.Inventor: Byoung-Su Lee
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Patent number: 8164125Abstract: A semiconductor device includes an N type well region in a P type substrate. A source region of a MOSFET is laterally separated from a boundary of the well region, which includes the drain of the MOSFET. An insulated gate of the MOSFET extends laterally from the source region to at least just past the boundary of the well region. A polysilicon layer, which forms a first plate of a capacitive anti-fuse, is insulated from an area of the well region, which forms the second plate of the anti-fuse. The anti-fuse is programmed by application of a voltage across the first and second capacitive plates sufficient to destroy at least a portion of the second dielectric layer, thereby electrically shorting the polysilicon layer to the drain of the HVFET.Type: GrantFiled: May 7, 2010Date of Patent: April 24, 2012Assignee: Power Integrations, Inc.Inventors: Sujit Banerjee, Martin H. Manley
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Patent number: 7897471Abstract: A structure to diminish high voltage instability in a high voltage device when under stress includes an amorphous silicon layer over a field oxide on the high voltage device.Type: GrantFiled: June 19, 2008Date of Patent: March 1, 2011Assignee: Fairchild Semiconductor CorporationInventor: Jifa Hao
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Patent number: 7750366Abstract: A solid-state imaging element includes a layered substrate made of silicon and composed of, for example, an N-type substrate, a P-type layer, and an N-type layer. In the layered substrate, an imaging region in which a plurality of pixels are arranged and a peripheral circuit region are formed. A recess reaching the reverse face of the P-type layer is formed in a reverse face portion of the layered substrate in the imaging region, and a reflective film is formed on at least the inner face of the recess. Light is reflected on the reverse face and the obverse face of the layered substrate.Type: GrantFiled: July 28, 2008Date of Patent: July 6, 2010Assignee: Panasonic CorporationInventors: Toru Okino, Mitsuyoshi Mori
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Patent number: 7718515Abstract: The principal objects of the present invention are to provide structure of a semiconductor device capable of reducing a bowing of a wafer, and a method for fabricating the semiconductor device. The present invention is applied to a semiconductor device, which is fabricated with a semiconductor substrate having a silicon carbide (SiC) film. The method includes the steps of: forming the SiC film on a semiconductor wafer; discriminating a deformation condition of the semiconductor wafer; and forming grooves in the SiC film, the grooves having a shape determined in accordance with the deformation condition of the semiconductor wafer.Type: GrantFiled: March 6, 2008Date of Patent: May 18, 2010Assignee: Oki Semiconductor Co., Ltd.Inventor: Kazuhide Abe
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Patent number: 7670909Abstract: A method for fabricating a semiconductor memory device with a vertical channel transistor includes forming a plurality of pillars each having a hard mask pattern thereon over a substrate, each of the plurality of pillars comprising an upper pillar and a lower pillar; forming a surround type gate electrode surrounding the lower pillar; forming an insulation layer filling a space between the pillars; forming a preliminary trench by primarily etching the insulation layer using a mask pattern for a word line until a portion of the upper pillar is exposed; forming a buffer layer over a resultant structure including the preliminary trench except on a bottom of the preliminary trench; and forming a trench for a word line by secondarily etching the insulation layer until the surround type gate electrode is exposed.Type: GrantFiled: June 27, 2008Date of Patent: March 2, 2010Assignee: Hynix Semiconductor Inc.Inventor: Sang-Hoon Cho
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Patent number: 7541291Abstract: A feature in a layer is provided. A photoresist layer is formed over the layer. The photoresist layer is patterned to form photoresist features with photoresist sidewalls, where the photoresist features have a first critical dimension. A conformal layer is deposited over the sidewalls of the photoresist features to reduce the critical dimensions of the photoresist features. Features are etched into the layer, wherein the layer features have a second critical dimension, which is less than the first critical dimension.Type: GrantFiled: June 22, 2007Date of Patent: June 2, 2009Assignee: Lam Research CorporationInventors: Sean S. Kang, Sangheon Lee, Wan-Lin Chen, Eric A. Hudson, S. M. Reza Sadjadi, Gan Ming Zhao
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Publication number: 20090068825Abstract: The present invention provides a method of annealing a semiconductor by applying a temperature-dependant phase switch layer to a semiconductor structure. The temperature-dependant phase switch layer changes phase from amorphous to crystalline at a predetermined temperature. When the semiconductor structure is annealed, electromagnetic radiation passes through the temperature-dependant phase switch layer before reaching the semiconductor structure. When a desired annealing temperature is reached the temperature-dependant phase switch layer substantially blocks the electromagnetic radiation from reaching the semiconductor structure. As a result, the semiconductor is annealed at a consistent temperature across the wafer. The temperature at which the temperature-dependant phase switch layer changes phase can be controlled by an ion implantation process.Type: ApplicationFiled: September 11, 2007Publication date: March 12, 2009Inventors: CHYIU HYIA POON, Alex See, Mei Sheng Zhou
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Patent number: RE44473Abstract: A method for fabricating a semiconductor memory device with a vertical channel transistor includes forming a plurality of pillars each having a hard mask pattern thereon over a substrate, each of the plurality of pillars comprising an upper pillar and a lower pillar; forming a surround type gate electrode surrounding the lower pillar; forming an insulation layer filling a space between the pillars; forming a preliminary trench by primarily etching the insulation layer using a mask pattern for a word line until a portion of the upper pillar is exposed; forming a buffer layer over a resultant structure including the preliminary trench except on a bottom of the preliminary trench; and forming a trench for a word line by secondarily etching the insulation layer until the surround type gate electrode is exposed.Type: GrantFiled: February 27, 2012Date of Patent: September 3, 2013Assignee: Hynix Semiconductor Inc.Inventor: Sang-Hoon Cho