Patents by Inventor Jeng-Bang Yau
Jeng-Bang Yau 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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Patent number: 10957707Abstract: The dosimeter has two vertical field effect transistors (VFETs), each VFET with a bottom and top source/drain and channel between them. An implanted charge storage region material lies between and in contact with each of the vertical channels. A trapped charge is within the implanted charge storage region. The amount of the trapped charge is related to an amount of radiation that passes through the implanted charge storage region.Type: GrantFiled: April 23, 2019Date of Patent: March 23, 2021Assignee: International Business Machines CorporationInventors: Jeng-Bang Yau, Alexander Reznicek, Bahman Hekmatshoartabari, Karthik Balakrishnan
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Publication number: 20210083139Abstract: A semiconductor radiation monitor (i.e., dosimeter) is provided that has an oxide charge storage region located on a first side of a semiconductor fin and a functional gate structure located on a second side of the semiconductor fin that is opposite the first side. Charges are created in the oxide charge storage region that is located on the first side of the semiconductor fin and detected on the second side of the semiconductor fin by the functional gate structure. Multiple semiconductor fins in parallel can form a dense and very sensitive semiconductor radiation monitor.Type: ApplicationFiled: September 16, 2019Publication date: March 18, 2021Inventors: Alexander Reznicek, Bahman Hekmatshoartabari, Jeng-Bang Yau, Karthik Balakrishnan
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Patent number: 10937898Abstract: A structure and method of forming a lateral bipolar junction transistor (LBJT) that includes: a first base layer, a second base layer over the first base layer, and an emitter region and collector region present on opposing sides of the first base layer, where the first base layer has a wider-band gap than the second base layer, and where the first base layer includes a III-V semiconductor material.Type: GrantFiled: August 14, 2019Date of Patent: March 2, 2021Assignee: International Business Machines CorporationInventors: Pouya Hashemi, Bahman Hekmatshoartabari, Alexander Reznicek, Karthik Balakrishnan, Jeng-Bang Yau
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Patent number: 10916537Abstract: An electric static discharge (ESD) diode pair is disclosed. The first diode of the device includes a first diode junction portion having vertically orientated and horizontally oriented portions of a first conductivity and a second diode junction portion of a second conductivity in direct contact with both of the vertically orientated and horizontally orientated portions of the first diode junction portion. The second diode of the device includes a first diode junction portion having vertically orientated and horizontally oriented portions of a second conductivity and a second diode junction portion having a first conductivity in direct contact with both of the vertically orientated and horizontally orientated portions of the first diode junction portion. A common electrical contact is in direct contact first diode junction portion for each of the first diode and the second diode.Type: GrantFiled: June 27, 2018Date of Patent: February 9, 2021Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Karthik Balakrishnan, Bahman Hekmatshoartabari, Alexander Reznicek, Jeng-Bang Yau
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Patent number: 10916651Abstract: A method for forming the semiconductor device that includes forming a gate opening to a channel region of a fin structure; and forming a dielectric layer on the fin structure, in which an upper portion of the fin structure is exposed. A metal is formed within the gate opening. The portions of the metal directly contacting the upper surface of fin structure provide a body contact. The combination of the metal within the gate opening to the channel region of the fin structure and the dielectric layer provide a functional gate structure to the semiconductor device.Type: GrantFiled: February 19, 2020Date of Patent: February 9, 2021Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Alexander Reznicek, Tak H. Ning, Jeng-Bang Yau, Bahman Hekmatshoartabari
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Patent number: 10916629Abstract: A semiconductor structure that occupies only one areal device area is provided that includes a charge storage region sandwiched between a pFET nanosheet device and an nFET nanosheet device. The charge storage region is an epitaxial oxide nanosheet that is lattice matched to an underlying first silicon channel material nanosheet and an overlying second silicon channel material nanosheet. The semiconductor structure can be used as an EPROM device.Type: GrantFiled: July 31, 2018Date of Patent: February 9, 2021Assignee: International Business Machines CorporationInventors: Alexander Reznicek, Jeng-Bang Yau, Tak H. Ning, Ghavam G. Shahidi
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Publication number: 20210028138Abstract: In an embodiment, a method for forming a solder bump includes preparing a transfer mold having a solder pillar extending from a mold substrate and through a first photoresist layer and having a shape partially defined by a second photoresist layer that is removed prior to transfer of the solder. In an embodiment, the mold substrate is flexible. In an embodiment, the transfer mold is flexible. In an embodiment, the method includes providing a device substrate having a wettable pad. In an embodiment, the method includes placing the transfer mold and the device substrate into aligned contact such that the solder pillar is in contact with the wettable pad. In an embodiment, the method includes forming a metallic bond between the solder pillar and the wettable pad. In an embodiment, the method includes removing the mold substrate and first photoresist layer.Type: ApplicationFiled: August 11, 2020Publication date: January 28, 2021Applicant: International Business Machines CorporationInventors: Eric Peter Lewandowski, Jae-Woong Nah, Jeng-Bang Yau, Peter Jerome Sorce
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Patent number: 10900952Abstract: A biosensor includes a bulk silicon substrate and a vertical bipolar junction transistor (BJT) formed on at least a portion of the substrate. The BJT includes an emitter region, a collector region and an epitaxially grown intrinsic base region between the emitter and collector regions. The biosensor further includes a sensing structure formed on at least a portion of two vertical surfaces of the intrinsic base region of the BJT. The sensing structure includes a channel/trench opening, exposing the intrinsic base region on at least first and second opposing sides thereof, and at least one dielectric layer formed in the channel/trench opening and contacting at least a portion of the intrinsic base region, the dielectric layer being configured to respond to charges in biological molecules.Type: GrantFiled: October 7, 2019Date of Patent: January 26, 2021Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Alexander Reznicek, Jeng-Bang Yau, Bahman Hekmatshoartabari
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Patent number: 10896971Abstract: A method for manufacturing a semiconductor device includes forming a fin on a semiconductor substrate, and forming a bottom source/drain region adjacent a base of the fin. In the method, a dielectric layer, a work function metal layer and a first gate metal layer are sequentially deposited on the bottom source/drain region and around the fin. The dielectric layer, the work function metal layer and the first gate metal layer form a gate structure. The method also includes removing the dielectric layer, the work function metal layer and the first gate metal layer from an end portion of the fin, and depositing a second gate metal layer around the end portion of the fin in place of the removed dielectric layer, the removed work function metal layer and the removed first gate metal layer. The second gate metal layer contacts the end portion of the fin.Type: GrantFiled: February 25, 2019Date of Patent: January 19, 2021Assignee: International Business Machines CorporationInventors: Alexander Reznicek, Tak H. Ning, Bahman Hekmatshoartabari, Jeng-Bang Yau
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Patent number: 10879202Abstract: In an embodiment, a method for forming a solder bump includes preparing a transfer mold having a solder pillar extending from a mold substrate and through a first photoresist layer and having a shape partially defined by a second photoresist layer that is removed prior to transfer of the solder. In an embodiment, the mold substrate is flexible. In an embodiment, the transfer mold is flexible. In an embodiment, the method includes providing a device substrate having a wettable pad. In an embodiment, the method includes placing the transfer mold and the device substrate into aligned contact such that the solder pillar is in contact with the wettable pad. In an embodiment, the method includes forming a metallic bond between the solder pillar and the wettable pad. In an embodiment, the method includes removing the mold substrate and first photoresist layer.Type: GrantFiled: July 26, 2019Date of Patent: December 29, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Eric Peter Lewandowski, Jae-Woong Nah, Jeng-Bang Yau, Peter Jerome Sorce
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Publication number: 20200402984Abstract: Semiconductor structures and methods of making the same. The semiconductor structures including at least two vertically stacked nanosheet devices. In one embodiment, an integrated circuit includes a plurality of horizontal nanosheet devices (HNS devices) that are stacked vertically, on top of each other, relative to a top surface of a substrate. The plurality of HNS devices including a first HNS device and a second HNS device that each have source and drain structures.Type: ApplicationFiled: June 20, 2019Publication date: December 24, 2020Inventors: Alexander Reznicek, Bahman Hekmatshoartabari, Karthik Balakrishnan, Jeng-Bang Yau
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Publication number: 20200363393Abstract: A biosensor includes a bulk silicon substrate and a vertical bipolar junction transistor (BJT) formed on at least a portion of the substrate. The BJT includes an emitter region, a collector region and an epitaxially grown intrinsic base region between the emitter and collector regions. The biosensor further includes a sensing structure formed on at least a portion of two vertical surfaces of the intrinsic base region of the BJT. The sensing structure includes a channel/trench opening, exposing the intrinsic base region on at least first and second opposing sides thereof, and at least one dielectric layer formed in the channel/trench opening and contacting at least a portion of the intrinsic base region, the dielectric layer being configured to respond to charges in biological molecules.Type: ApplicationFiled: October 7, 2019Publication date: November 19, 2020Inventors: Alexander Reznicek, Jeng-Bang Yau, Bahman Hekmatshoartabari
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Patent number: 10839909Abstract: A shared floating gate device, the device including an nFET, a pFET including a different material than that of the nFET, and a floating gate.Type: GrantFiled: February 27, 2019Date of Patent: November 17, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Tak Ning, Jeng-Bang Yau
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Publication number: 20200343257Abstract: The dosimeter has two vertical field effect transistors (VFETs), each VFET with a bottom and top source/drain and channel between them. An implanted charge storage region material lies between and in contact with each of the vertical channels. A trapped charge is within the implanted charge storage region. The amount of the trapped charge is related to an amount of radiation that passes through the implanted charge storage region.Type: ApplicationFiled: April 23, 2019Publication date: October 29, 2020Inventors: Jeng-Bang Yau, Alexander Reznicek, Bahman Hekmatshoartabari, Karthik Balakrishnan
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Patent number: 10784347Abstract: High-performance lateral bipolar junction transistors (BJTs) are provided in which a lightly doped upper intrinsic base region is formed between a lower intrinsic base region and an extrinsic base region. The lightly doped upper intrinsic base region provides two electron paths which contribute to the collector current, IC. The presence of the lightly doped upper intrinsic base region increases the total IC and leads to higher current gain, ?, if there is no increase of the base current, IB.Type: GrantFiled: March 7, 2019Date of Patent: September 22, 2020Assignee: International Business Machines CorporationInventors: Pouya Hashemi, Tak H. Ning, Jeng-Bang Yau
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Patent number: 10777555Abstract: A method for manufacturing a semiconductor device comprises forming a bottom source/drain region on a semiconductor substrate, forming a channel region extending vertically from the bottom source/drain region, growing a top source/drain region from an upper portion of the channel region, and growing a gate region from a lower portion of the channel region under the upper portion, wherein the gate region is on more than one side of the channel region.Type: GrantFiled: July 16, 2019Date of Patent: September 15, 2020Assignee: International Business Machines CorporationInventors: Karthik Balakrishnan, Bahman Hekmatshoartabari, Alexander Reznicek, Jeng-Bang Yau
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Publication number: 20200286995Abstract: High-performance lateral bipolar junction transistors (BJTs) are provided in which a lightly doped upper intrinsic base region is formed between a lower intrinsic base region and an extrinsic base region. The lightly doped upper intrinsic base region provides two electron paths which contribute to the collector current, IC. The presence of the lightly doped upper intrinsic base region increases the total IC and leads to higher current gain, ?, if there is no increase of the base current, IB.Type: ApplicationFiled: March 7, 2019Publication date: September 10, 2020Inventors: Pouya Hashemi, Tak H. Ning, Jeng-Bang Yau
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Publication number: 20200273967Abstract: A method for manufacturing a semiconductor device includes forming a fin on a semiconductor substrate, and forming a bottom source/drain region adjacent a base of the fin. In the method, a dielectric layer, a work function metal layer and a first gate metal layer are sequentially deposited on the bottom source/drain region and around the fin. The dielectric layer, the work function metal layer and the first gate metal layer form a gate structure. The method also includes removing the dielectric layer, the work function metal layer and the first gate metal layer from an end portion of the fin, and depositing a second gate metal layer around the end portion of fin in place of the removed dielectric layer, the removed work function metal layer and the removed first gate metal layer. The second gate metal layer contacts the end portion of the fin.Type: ApplicationFiled: February 25, 2019Publication date: August 27, 2020Inventors: Alexander Reznicek, Tak H. Ning, Bahman Hekmatshoartabari, Jeng-Bang Yau
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Patent number: 10741645Abstract: A semiconductor device including a base region present within a fin semiconductor structure that is present atop a dielectric substrate. An epitaxial emitter region and epitaxial collector region are present on opposing sides and in direct contact with the fin semiconductor structure. An epitaxial extrinsic base region is present on a surface of the fin semiconductor substrate that is opposite the surface of the fin semiconductor structure that is in contact with the dielectric base.Type: GrantFiled: December 11, 2018Date of Patent: August 11, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Karthik Balakrishnan, Bahman Hekmatshoartabari, Alexander Reznicek, Jeng-Bang Yau
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Patent number: 10734505Abstract: A structure and method of forming a lateral bipolar junction transistor (LBJT) that includes: a first base layer, a second base layer over the first base layer, and an emitter region and collector region present on opposing sides of the first base layer, where the first base layer has a wider-band gap than the second base layer, and where the first base layer includes a III-V semiconductor material.Type: GrantFiled: November 30, 2017Date of Patent: August 4, 2020Assignee: International Business Machines CorporationInventors: Pouya Hashemi, Bahman Hekmatshoartabari, Alexander Reznicek, Karthik Balakrishnan, Jeng-Bang Yau