Patents by Inventor Ta-Chuan Kuo
Ta-Chuan Kuo 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: 20250241024Abstract: An apparatus includes a drain and a source on opposing sides of an epitaxial layer, a plurality of gates formed in the epitaxial layer, a source contact connected to the source, a gate contact connected to the plurality of gates, a drain contact on opposing sides of the epitaxial layer of the source contact, a gate-source electrostatic discharge (ESD) diode connected between the gate contact and the source contact, and a breakdown voltage enhancement and leakage prevention structure formed underneath the gate-source ESD diode structure, and wherein the breakdown voltage enhancement and leakage prevention structure comprises a reduced surface field (RESURF) structure.Type: ApplicationFiled: June 7, 2024Publication date: July 24, 2025Inventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan KUO
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Publication number: 20250241026Abstract: An apparatus includes a drain and a source on opposing sides of an epitaxial layer, a body region and a plurality of gates formed in the epitaxial layer, an interlayer dielectric layer over the epitaxial layer, a gate-source electrostatic discharge (ESD) diode in the interlayer dielectric layer, a source contact connected to the source and a first terminal of the gate-source ESD diode structure, a gate contact connected to the plurality of gates and a second terminal of the gate-source ESD diode structure, a drain contact on opposing sides of the epitaxial layer of the source contact, a breakdown voltage enhancement and leakage prevention structure formed underneath the gate-source ESD diode structure, wherein the breakdown voltage enhancement and leakage prevention structure comprises a body ring structure.Type: ApplicationFiled: July 2, 2024Publication date: July 24, 2025Inventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan KUO
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Publication number: 20250241023Abstract: A method includes growing an epitaxial layer over a substrate, forming a plurality of gates in the epitaxial layer, forming a breakdown voltage enhancement and leakage prevention structure in the epitaxial layer, comprising a reduced surface field (RESURF) structure, forming a source in the epitaxial layer and a gate-source Electrostatic Discharge (ESD) diode structure over the epitaxial layer, forming a source contact connected to the source and a first terminal of the gate-source ESD diode structure, forming a gate contact connected to the plurality of gates and a second terminal of the gate-source ESD diode structure, and forming a drain contact on the opposing side of the epitaxial layer from the source contact.Type: ApplicationFiled: June 7, 2024Publication date: July 24, 2025Inventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan KUO
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Publication number: 20250241025Abstract: An apparatus includes a drain and a source on opposing sides of an epitaxial layer, a plurality of gates formed in the epitaxial layer, a source contact connected to the source, a gate contact connected to the plurality of gates, a gate-source electrostatic discharge (ESD) diode connected between the gate contact and the source contact, and a breakdown voltage enhancement and leakage prevention structure formed underneath the gate-source ESD diode structure, wherein the breakdown voltage enhancement and leakage prevention structure comprises a body ring structure.Type: ApplicationFiled: June 20, 2024Publication date: July 24, 2025Inventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan KUO
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Publication number: 20250241021Abstract: An apparatus includes a drain and a source on opposing sides of an epitaxial layer, a plurality of gates formed in the epitaxial layer, a source contact connected to the source, a gate contact connected to the plurality of gates, a gate-source electrostatic discharge (ESD) diode connected between the gate contact and the source contact, and a breakdown voltage enhancement and leakage prevention structure formed underneath the gate-source ESD diode structure.Type: ApplicationFiled: May 21, 2024Publication date: July 24, 2025Inventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan KUO
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Publication number: 20250241022Abstract: An apparatus includes a drain and a source on opposing sides of an epitaxial layer, a plurality of gates formed in the epitaxial layer, a source contact connected to the source, a gate contact connected to the plurality of gates, a gate-source electrostatic discharge (ESD) diode connected between the gate contact and the source contact, and a breakdown voltage enhancement and leakage prevention structure formed underneath the gate-source ESD diode structure.Type: ApplicationFiled: June 4, 2024Publication date: July 24, 2025Inventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan KUO
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Patent number: 12369364Abstract: An apparatus includes a drain and a source on opposing sides of an epitaxial layer, a plurality of gates formed in the epitaxial layer, a source contact connected to the source, a gate contact connected to the plurality of gates, a gate-source electrostatic discharge (ESD) diode connected between the gate contact and the source contact, and a breakdown voltage enhancement and leakage prevention structure formed underneath the gate-source ESD diode structure.Type: GrantFiled: May 21, 2024Date of Patent: July 22, 2025Assignee: Diodes IncorporatedInventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan Kuo
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Publication number: 20250176276Abstract: A trench-type semiconductor power device includes: a substrate; an epitaxial layer; a body doped region located in the epitaxial layer; a source doped region located in the body doped region; and a trench structure comprises a first semiconductor layer extending in a second direction. The first semiconductor layer includes: a first part that abuts against the body doped region and the source doped region, and serves as a gate electrode having a first conductivity type; and a second part that extends in the second direction and away from the source doped region, and comprises a plurality of first doped regions having the first conductivity type and a plurality of second doped regions having a second conductivity type. The plurality of first doped regions and the plurality of second doped regions are staggered to form a diode string having back-to-back diodes.Type: ApplicationFiled: July 29, 2024Publication date: May 29, 2025Applicant: Diodes IncorporatedInventors: Ta-Chuan Kuo, Chiao-Shun Chuang
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Patent number: 12268021Abstract: An apparatus includes a drain and a source on opposing sides of an epitaxial layer, a plurality of gates formed in the epitaxial layer, a source contact connected to the source, a gate contact connected to the plurality of gates, a gate-source electrostatic discharge (ESD) diode connected between the gate contact and the source contact, and a breakdown voltage enhancement and leakage prevention structure formed underneath the gate-source ESD diode structure.Type: GrantFiled: June 4, 2024Date of Patent: April 1, 2025Assignee: Diodes IncorporatedInventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan Kuo
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Patent number: 12256562Abstract: A method includes growing an epitaxial layer over a substrate, forming a plurality of gates in the epitaxial layer, forming a source in the epitaxial layer, forming a breakdown voltage enhancement and leakage prevention structure comprising a body ring structure in the epitaxial layer, forming a gate-source Electrostatic Discharge (ESD) diode structure over the epitaxial layer, forming a source contact connected to the source and a first terminal of the gate-source ESD diode structure, forming a gate contact connected to the plurality of gates and a second terminal of the gate-source ESD diode structure.Type: GrantFiled: June 20, 2024Date of Patent: March 18, 2025Assignee: Diodes IncorporatedInventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan Kuo
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Publication number: 20250055456Abstract: An apparatus includes a capacitive device configured to provide bias power for a high-side switch, a gate drive path connected between the capacitive device and a gate of the high-side switch, wherein the gate drive path comprises a controllable switch and a first resistive device coupled in parallel between the capacitive device and the gate of the high-side switch, and a control switch connected between the gate of the high-side switch and ground.Type: ApplicationFiled: September 16, 2024Publication date: February 13, 2025Inventors: Chiao-Shun CHUANG, Ta-Chuan KUO, Ke-Horng CHEN
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Patent number: 12224311Abstract: An apparatus includes a drain and a source on opposing sides of an epitaxial layer, a plurality of gates formed in the epitaxial layer, a source contact connected to the source, a gate contact connected to the plurality of gates, a drain contact on opposing sides of the epitaxial layer of the source contact, a gate-source electrostatic discharge (ESD) diode connected between the gate contact and the source contact, and a breakdown voltage enhancement and leakage prevention structure formed underneath the gate-source ESD diode structure, wherein the breakdown voltage enhancement and leakage prevention structure comprises a body ring structure.Type: GrantFiled: June 18, 2024Date of Patent: February 11, 2025Assignee: Diodes IncorporatedInventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan Kuo
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Publication number: 20250007514Abstract: An apparatus includes a capacitive device configured to provide bias power for a high-side switch, a gate drive path connected between the capacitive device and a gate of the high-side switch, wherein the gate drive path comprises a controllable switch and a first resistive device connected in series between the capacitive device and the gate of the high-side switch, and a control switch connected between the gate of the high-side switch and ground.Type: ApplicationFiled: September 16, 2024Publication date: January 2, 2025Inventors: Chiao-Shun CHUANG, Ta-Chuan KUO, Ke-Horng CHEN
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Patent number: 12170311Abstract: A method includes growing an epitaxial layer over a substrate, forming a plurality of gates in the epitaxial layer, forming a breakdown voltage enhancement and leakage prevention structure in the epitaxial layer comprising a body ring structure, forming a source and a body region in the epitaxial layer, forming an interlayer dielectric layer over the epitaxial layer, forming a gate-source Electrostatic Discharge (ESD) diode structure in the interlayer dielectric layer, forming a source contact connected to the source, and a first terminal of the gate-source ESD diode structure, forming a gate contact connected to the plurality of gates and a second terminal of the gate-source ESD diode structure, and forming a drain contact underneath the substrate.Type: GrantFiled: July 2, 2024Date of Patent: December 17, 2024Assignee: Diodes IncorporatedInventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan Kuo
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Patent number: 12154941Abstract: An apparatus includes a drain and a source on opposing sides of an epitaxial layer, a plurality of gates formed in the epitaxial layer, a source contact connected to the source, a gate contact connected to the plurality of gates, a gate-source electrostatic discharge (ESD) diode connected between the gate contact and the source contact, and a breakdown voltage enhancement and leakage prevention structure formed underneath the gate-source ESD diode structure.Type: GrantFiled: January 18, 2024Date of Patent: November 26, 2024Assignee: Diodes IncorporatedInventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan Kuo
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Patent number: 12154942Abstract: A method includes growing an epitaxial layer over a substrate, forming a plurality of gates in the epitaxial layer, forming a breakdown voltage enhancement and leakage prevention structure in the epitaxial layer, comprising a body ring structure, forming a source in the epitaxial layer and a gate-source Electrostatic Discharge (ESD) diode structure over the epitaxial layer, forming a source contact connected to the source and a first terminal of the gate-source ESD diode structure, forming a gate contact connected to the plurality of gates and a second terminal of the gate-source ESD diode structure, and forming a drain contact on the opposing side of the epitaxial layer from the source contact.Type: GrantFiled: June 18, 2024Date of Patent: November 26, 2024Assignee: Diodes IncorporatedInventors: Wan-Yu Kai, Chia-Wei Hu, Ta-Chuan Kuo
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Patent number: 12126336Abstract: An apparatus includes a capacitive device configured to provide bias power for a high-side switch, a gate drive path having variable resistance connected between the capacitive device and a gate of the high-side switch, wherein the gate drive path having variable resistance is of a first resistance value in response to a turn-on of the high-side switch, and the gate drive path having variable resistance is of a second resistance value in response to a turn-off of the high-side switch, and wherein the second resistance value is greater than the first resistance value, and a control switch connected between the gate of the high-side switch and ground.Type: GrantFiled: December 5, 2023Date of Patent: October 22, 2024Assignee: Diodes IncorporatedInventors: Chiao-Shun Chuang, Ta-Chuan Kuo, Ke-Horng Chen
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Publication number: 20240106432Abstract: An apparatus includes a capacitive device configured to provide bias power for a high-side switch, a gate drive path having variable resistance connected between the capacitive device and a gate of the high-side switch, wherein the gate drive path having variable resistance is of a first resistance value in response to a turn-on of the high-side switch, and the gate drive path having variable resistance is of a second resistance value in response to a turn-off of the high-side switch, and wherein the second resistance value is greater than the first resistance value, and a control switch connected between the gate of the high-side switch and ground.Type: ApplicationFiled: December 5, 2023Publication date: March 28, 2024Inventors: Chiao-Shun CHUANG, Ta-Chuan KUO, Ke-Horng CHEN
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Patent number: 11876511Abstract: An apparatus includes a capacitive device configured to provide bias power for a high-side switch, a gate drive path having variable resistance connected between the capacitive device and a gate of the high-side switch, wherein the gate drive path having variable resistance is of a first resistance value in response to a turn-on of the high-side switch, and the gate drive path having variable resistance is of a second resistance value in response to a turn-off of the high-side switch, and wherein the second resistance value is greater than the first resistance value, and a control switch connected between the gate of the high-side switch and ground.Type: GrantFiled: July 8, 2021Date of Patent: January 16, 2024Assignee: Diodes IncorporatedInventors: Chiao-Shun Chuang, Ta-Chuan Kuo, Ke-Horng Chen
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Publication number: 20210336618Abstract: An apparatus includes a capacitive device configured to provide bias power for a high-side switch, a gate drive path having variable resistance connected between the capacitive device and a gate of the high-side switch, wherein the gate drive path having variable resistance is of a first resistance value in response to a turn-on of the high-side switch, and the gate drive path having variable resistance is of a second resistance value in response to a turn-off of the high-side switch, and wherein the second resistance value is greater than the first resistance value, and a control switch connected between the gate of the high-side switch and ground.Type: ApplicationFiled: July 8, 2021Publication date: October 28, 2021Applicant: Diodes IncorporatedInventors: CHIAO-SHUN CHUANG, TA-CHUAN KUO, KE-HORNG CHEN