Patents by Inventor Richard J. De Souza
Richard J. De Souza has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140001549Abstract: Embodiments of semiconductor devices and driver circuits include a semiconductor substrate having a first conductivity type, an isolation structure (including a sinker region and a buried layer), an active device within a portion of the substrate contained by the isolation structure, and a resistor circuit. The buried layer is positioned below the top substrate surface, and has a second conductivity type. The sinker region extends between the top substrate surface and the buried layer, and has the second conductivity type. The active device includes a body region, which is separated from the isolation structure by a portion of the semiconductor substrate having the first conductivity type. The resistor circuit is connected between the isolation structure and the body region. The resistor circuit may include one or more resistor networks and, optionally, a Schottky diode and/or one or more PN diode(s) in series and/or parallel with the resistor network(s).Type: ApplicationFiled: November 7, 2012Publication date: January 2, 2014Applicant: Freescale Semiconductor, Inc.Inventors: HUBERT M. BODE, Weize Chen, Richard J. De Souza, Patrice M. Parris
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Publication number: 20130341717Abstract: A device includes a semiconductor substrate, a body region in the semiconductor substrate, having a first conductivity type, and including a channel region through which charge carriers flow, a drain region in the semiconductor substrate, having a second conductivity type, and spaced from the body region along a first lateral dimension, a drift region in the semiconductor substrate, having the second conductivity type, and electrically coupling the drain region to the channel region, and a plurality of floating reduced surface field (RESURF) regions in the semiconductor substrate adjacent the drift region, having the first conductivity type, and around which the charge carriers drift through the drift region under an electric field arising from a voltage applied to the drain region. Adjacent floating RESURF regions of the plurality of floating RESURF regions are spaced from one another along a second lateral dimension of the device by a respective gap.Type: ApplicationFiled: June 21, 2012Publication date: December 26, 2013Applicant: Freescale Semiconductor, Inc.Inventors: Weize Chen, Richard J. De Souza, Patrice M. Parris
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Publication number: 20130270606Abstract: A device includes a semiconductor substrate having a first conductivity type, a device isolating region in the semiconductor substrate, defining an active area, and having a second conductivity type, a body region in the active area and having the first conductivity type, and a drain region in the active area and spaced from the body region to define a conduction path of the device, the drain region having the second conductivity type. The device isolating region and the body region are spaced from one another to establish a first breakdown voltage lower than a second breakdown voltage in the conduction path.Type: ApplicationFiled: April 17, 2012Publication date: October 17, 2013Applicant: Freescale Semiconductor, Inc.Inventors: Weize Chen, Hubert M. Bode, Richard J. De Souza, Patrice M. Parris
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Patent number: 8344443Abstract: A single-poly non-volatile memory includes a PMOS select transistor (210) formed with a select gate (212), and P+ source and drain regions (211, 213) formed in a shared n-well region (240), a serially connected PMOS floating gate transistor (220) formed with part of a p-type floating gate layer (222) and P+ source and drain regions (221, 223) formed in the shared n-well region (240), and a coupling capacitor (230) formed over a p-well region (250) and connected to the PMOS floating gate transistor (220), where the coupling capacitor (230) includes a first capacitor plate formed with a second part of the p-type floating gate layer (222) and an underlying portion of the p-well region (250).Type: GrantFiled: April 25, 2008Date of Patent: January 1, 2013Assignee: Freescale Semiconductor, Inc.Inventors: Weize Chen, Richard J. De Souza, Xin Lin, Patrice M. Parris
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Publication number: 20110299337Abstract: An ISFET includes a control gate coupled to a floating gate in a CMOS device. The control gate, for example, a poly-to-well capacitor, is configured to receive a bias voltage and effect movement of a trapped charge between the control gate and the floating gate. The threshold voltage of the ISFET can therefore by trimmed to a predetermined value, thereby storing the trim information (the amount of trapped charge in the floating gate) within the ISFET itself.Type: ApplicationFiled: June 4, 2010Publication date: December 8, 2011Applicant: Freescale Semiconductor, Inc.Inventors: Patrice M. Parris, Weize Chen, Richard J. De Souza, Md M. Hoque, John M. McKenna
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Publication number: 20110261500Abstract: Apparatus and related fabrication methods are provided for capacitor structures. One embodiment of a capacitor structure comprises a plurality of consecutive metal layers and another metal layer. Each via layer of a plurality of via layers is interposed between metal layers of the plurality of metal layers. The plurality of metal layers and the plurality of via layers are cooperatively configured to provide a first plurality of vertical conductive structures corresponding to a first electrode and a second plurality of vertical conductive structures corresponding to a second electrode. The plurality of consecutive metal layers form a plurality of vertically-aligned regions and provide intralayer electrical interconnections among the first plurality of vertical conductive structures.Type: ApplicationFiled: April 22, 2010Publication date: October 27, 2011Applicant: FREESCALE SEMICONDUCTOR, INC.Inventors: Patrice M. Parris, Richard J. De Souza, Weize Chen, Moaniss Zitouni
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Patent number: 7700996Abstract: A tunable antifuse element (102, 202, 204, 504, 952) includes a substrate material (101) having an active area (106) formed in a surface, a gate electrode (104) having at least a portion positioned above the active area (106), and a dielectric layer (110) disposed between the gate electrode (104) and the active area (106). The dielectric layer (110) includes a tunable stepped structure (127). During operation, a voltage applied between the gate electrode (104) and the active area (106) creates a current path through the dielectric layer (110) and a rupture of the dielectric layer (110) in a rupture region (130). The dielectric layer (110) is tunable by varying the stepped layer thicknesses and the geometry of the layer.Type: GrantFiled: January 29, 2009Date of Patent: April 20, 2010Assignee: Freescale Semiconductor, Inc.Inventors: Patrice M. Parris, Weize Chen, John M. McKenna, Jennifer H. Morrison, Moaniss Zitouni, Richard J. De Souza
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Publication number: 20090267127Abstract: A single-poly non-volatile memory includes a PMOS select transistor (210) formed with a select gate (212), and P+ source and drain regions (211, 213) formed in a shared n-well region (240), a serially connected PMOS floating gate transistor (220) formed with part of a p-type floating gate layer (222) and P+ source and drain regions (221, 223) formed in the shared n-well region (240), and a coupling capacitor (230) formed over a p-well region (250) and connected to the PMOS floating gate transistor (220), where the coupling capacitor (230) includes a first capacitor plate formed with a second part of the p-type floating gate layer (222) and an underlying portion of the p-well region (250).Type: ApplicationFiled: April 25, 2008Publication date: October 29, 2009Inventors: Weize Chen, Richard J. De Souza, Xin Lin, Patrice M. Parris
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Publication number: 20090127587Abstract: A tunable antifuse element (102, 202, 204, 504, 952) includes a substrate material (101) having an active area (106) formed in a surface, a gate electrode (104) having at least a portion positioned above the active area (106), and a dielectric layer (110) disposed between the gate electrode (104) and the active area (106). The dielectric layer (110) includes a tunable stepped structure (127). During operation, a voltage applied between the gate electrode (104) and the active area (106) creates a current path through the dielectric layer (110) and a rupture of the dielectric layer (110) in a rupture region (130). The dielectric layer (110) is tunable by varying the stepped layer thicknesses and the geometry of the layer.Type: ApplicationFiled: January 29, 2009Publication date: May 21, 2009Applicant: FREESCALE SEMICONDUCTOR, INC.Inventors: Patrice M. Parris, Weize Chen, John M. McKenna, Jennifer H. Morrison, Moaniss Zitouni, Richard J. De Souza
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Patent number: 7528015Abstract: A tunable antifuse element (102, 202, 204, 504, 952) and method of fabricating the tunable antifuse element, including a substrate material (101) having an active area (106) formed in a surface, a gate electrode (104) having at least a portion positioned above the active area (106), and a dielectric layer (110) disposed between the gate electrode (104) and the active area (106). The dielectric layer (110) including the fabrication of one of a tunable stepped structure (127). During operation, a voltage applied between the gate electrode (104) and the active area (106) creates a current path through the dielectric layer (110) and a rupture of the dielectric layer (110) in a plurality of rupture regions (130). The dielectric layer (110) is tunable by varying the stepped layer thicknesses and the geometry of the layer.Type: GrantFiled: June 28, 2005Date of Patent: May 5, 2009Assignee: Freescale Semiconductor, Inc.Inventors: Patrice M. Parris, Weize Chen, John M. McKenna, Jennifer H. Morrison, Moaniss Zitouni, Richard J. De Souza
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Patent number: 7211477Abstract: Methods and apparatus are provided for a MOSFET (50, 99, 199) exhibiting increased source-drain breakdown voltage (BVdss). Source (S) (70) and drain (D) (76) are spaced apart by a channel (90) underlying a gate (84) and one or more carrier drift spaces (92, 92?) serially located between the channel (90) and the source (70, 70?) or drain (76, 76?). A buried region (96, 96?) of the same conductivity type as the drift space (92, 92?) and the source (70, 70?) or drain (76, 76?) is provided below the drift space (92, 92?), separated therefrom in depth by a narrow gap (94, 94?) and ohmically coupled to the source (70, 70?) or drain (76, 76?). Current flow (110) through the drift space produces a potential difference (Vt) across this gap (94, 94?).Type: GrantFiled: May 6, 2005Date of Patent: May 1, 2007Assignee: Freescale Semiconductor, Inc.Inventors: Edouard D. de Frésart, Richard J. De Souza, Xin Lin, Jennifer H. Morrison, Patrice M. Parris, Moaniss Zitouni
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Patent number: 6828650Abstract: A Bipolar Junction Transistor (BJT) that reduces the variation in the current gain through the use of a trench pullback structure. The trench pullback structure is comprised of a trench and an active region. The trench reduces recombination in the emitter-base region through increasing the distance charge carriers must travel between the emitter and the base. The trench also reduces recombination by reducing the amount of interfacial traps that the electrons injected from the emitter are exposed to. Further, the trench is pulled back from the emitter allowing an active region where electrons injected from a sidewall of the emitter can contribute to the overall injected emitter current. This structure offers the same current capability and current gain as a device without the trench between the emitter and the base while reducing the current gain variation.Type: GrantFiled: May 31, 2002Date of Patent: December 7, 2004Assignee: Motorola, Inc.Inventors: Edouard de Frésart, Patrice Parris, Richard J De Souza, Jennifer H. Morrison, Moaniss Zitouni, Xin Lin
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Patent number: 6787858Abstract: A structure protects CMOS logic from substrate minority carrier injection caused by the inductive switching of a power device. A single Integrated Circuit (IC) supports one or more power MOSFETs and one or more arrays of CMOS logic. A highly doped ring is formed between the drain of the power MOSFET and the CMOS logic array to provide a low resistance path to ground for the injected minority carriers. Under the CMOS logic is a highly doped buried layer to form a region of high recombination for the injected minority carriers. One or more CMOS devices are formed above the buried layer. The substrate is a resistive and the injected current is attenuated. The well in which the CMOS devices rest forms a low resistance ground plane for the injected minority carriers.Type: GrantFiled: October 16, 2002Date of Patent: September 7, 2004Assignee: Freescale Semiconductor, Inc.Inventors: Moaniss Zitouni, Edouard D. de Frésart, Richard J. De Souza, Xin Lin, Jennifer H. Morrison, Patrice Parris
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Publication number: 20040075144Abstract: A structure protects CMOS logic from substrate minority carrier injection caused by the inductive switching of a power device. A single Integrated Circuit (IC) supports one or more power MOSFETs and one or more arrays of CMOS logic. A highly doped ring is formed between the drain of the power MOSFET and the CMOS logic array to provide a low resistance path to ground for the injected minority carriers. Under the CMOS logic is a highly doped buried layer to form a region of high recombination for the injected minority carriers. One or more CMOS devices are formed above the buried layer. The substrate is a resistive and the injected current is attenuated. The well in which the CMOS devices rest forms a low resistance ground plane for the injected minority carriers.Type: ApplicationFiled: October 16, 2002Publication date: April 22, 2004Applicant: Motorola, Inc.Inventors: Moaniss Zitouni, Edouard D. de Fresart, Richard J. De Souza, Xin Lin, Jennifer H. Morrison, Patrice Parris
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Publication number: 20030222329Abstract: A Bipolar Junction Transistor (BJT) that reduces the variation in the current gain through the use of a trench pullback structure. The trench pullback structure is comprised of a trench and an active region. The trench reduces recombination in the emitter-base region through increasing the distance charge carriers must travel between the emitter and the base. The trench also reduces recombination by reducing the amount of interfacial traps that the electrons injected from the emitter are exposed to. Further, the trench is pulled back from the emitter allowing an active region where electrons injected from a sidewall of the emitter can contribute to the overall injected emitter current. This structure offers the same current capability and current gain as a device without the trench between the emitter and the base while reducing the current gain variation.Type: ApplicationFiled: May 31, 2002Publication date: December 4, 2003Applicant: Motorola, Inc.Inventors: Edouard de Fresart, Patrice Parris, Richard J De Souza, Jennifer H. Morrison, Moaniss Zitouni, Xin Lin