Patents by Inventor Dawei Heh
Dawei Heh 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: 20240249792Abstract: A method of extending a lifetime of a memory cell is provided. The method includes detecting, by a memory controller, whether a memory cell has failed or not; repairing, by the memory controller, the memory cell by applying a first pulse having a first amplitude to the memory cell, in response to determining that the memory cell has failed; and writing, by the memory controller, input data to the memory cell by applying a second pulse having a second amplitude less than the first amplitude, in response to repairing the memory cell. In one expect, the detecting includes writing, by the memory controller, additional input data to the memory cell; reading, by the memory controller, data stored by the memory cell; comparing, by the memory controller, the data stored by the memory cell with the additional input data; and determining whether the memory cell has failed according to the comparison.Type: ApplicationFiled: April 3, 2024Publication date: July 25, 2024Applicant: Taiwan Semiconductor Manufacturing Company LimitedInventors: Yung-Huei Lee, Pei-Chun Liao, Jian-Hong Lin, Dawei Heh, Wen Hsien Kuo
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Publication number: 20240178319Abstract: A semiconductor device includes a substrate, an interfacial layer formed on the semiconductor substrate, and a high-k dielectric layer formed on the interfacial layer. At least one of the high-k dielectric layer and the interfacial layer is doped with: a first dopant species, a second dopant species, and a third dopant species. The first dopant species and the second dopant species form a plurality of first dipole elements having a first polarity. The third dopant species forms a plurality of second dipole elements having a second polarity. A first concentration ratio of the first concentration of the first dopant species to the second concentration of the second dopant species of the p-type transistor is different from a second concentration ratio of the first concentration of the first dopant species to the second concentration of the second dopant species of the n-type transistor.Type: ApplicationFiled: February 2, 2024Publication date: May 30, 2024Inventors: Hsiang-Pi Chang, Yen-Tien Tung, Dawei Heh, Chung-Liang Cheng, I-Ming Chang, Yao-Sheng Huang, Tzer-Min Shen, Huang-Lin Chao
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Patent number: 11972826Abstract: Disclosed herein are related to a system and a method of extending a lifetime of a memory cell. In one aspect, a memory controller applies a first pulse having a first amplitude to the memory cell to write input data to the memory cell. In one aspect, the memory controller applies a second pulse having a second amplitude larger than the first amplitude to the memory cell to extend a lifetime of the memory cell. The memory cell may include a resistive memory device or a phase change random access memory device. In one aspect, the memory controller applies the second pulse to the memory cell to repair the memory cell in response to determining that the memory cell has failed. In one aspect, the memory controller periodically applies the second pulse to the memory cell to extend the lifetime of the memory cell before the memory cell fails.Type: GrantFiled: July 8, 2021Date of Patent: April 30, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Yung-Huei Lee, Pei-Chun Liao, Jian-Hong Lin, Dawei Heh, WenHsien Kuo
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Patent number: 11894461Abstract: A semiconductor device includes a semiconductor substrate, an interfacial layer formed on the semiconductor substrate, a high-k dielectric layer formed on the interfacial layer, and a conductive gate electrode layer formed on the high-k dielectric layer. At least one of the high-k dielectric layer and the interfacial layer is doped with: a first dopant species, a second dopant species, and a third dopant species. The first dopant species and the second dopant species form a plurality of first dipole elements having a first polarity. The third dopant species forms a plurality of second dipole elements having a second polarity, and the first and second polarities are opposite.Type: GrantFiled: November 29, 2021Date of Patent: February 6, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Hsiang-Pi Chang, Yen-Tien Tung, Dawei Heh, Chung-Liang Cheng, I-Ming Chang, Yao-Sheng Huang, Tzer-Min Shen, Huang-Lin Chao
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Publication number: 20230009913Abstract: Disclosed herein are related to a system and a method of extending a lifetime of a memory cell. In one aspect, a memory controller applies a first pulse having a first amplitude to the memory cell to write input data to the memory cell. In one aspect, the memory controller applies a second pulse having a second amplitude larger than the first amplitude to the memory cell to extend a lifetime of the memory cell. The memory cell may include a resistive memory device or a phase change random access memory device. In one aspect, the memory controller applies the second pulse to the memory cell to repair the memory cell in response to determining that the memory cell has failed. In one aspect, the memory controller periodically applies the second pulse to the memory cell to extend the lifetime of the memory cell before the memory cell fails.Type: ApplicationFiled: July 8, 2021Publication date: January 12, 2023Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Yung-Huei Lee, Pei-Chun Liao, Jian-Hong Lin, Dawei Heh, WenHsien Kuo
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Publication number: 20220310846Abstract: A semiconductor device includes a semiconductor substrate, an interfacial layer formed on the semiconductor substrate, a high-k dielectric layer formed on the interfacial layer, and a conductive gate electrode layer formed on the high-k dielectric layer. At least one of the high-k dielectric layer and the interfacial layer is doped with: a first dopant species, a second dopant species, and a third dopant species. The first dopant species and the second dopant species form a plurality of first dipole elements having a first polarity. The third dopant species forms a plurality of second dipole elements having a second polarity, and the first and second polarities are opposite.Type: ApplicationFiled: November 29, 2021Publication date: September 29, 2022Inventors: Hsiang-Pi Chang, Yen-Tien Tung, Dawei Heh, Chung-Liang Cheng, I-Ming Chang, Yao-Sheng Huang, Tzer-Min Shen, Huang-Lin Chao
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Patent number: 7548067Abstract: Methods for determining capacitance values of a metal on semiconductor (MOS) structure are provided. A time domain reflectometry circuit may be loaded with a MOS structure. The MOS structure may be biased with various voltages, and reflectometry waveforms from the applied voltage may be collected. The capacitance of the MOS structure may be determined from the reflectometry waveforms.Type: GrantFiled: October 25, 2006Date of Patent: June 16, 2009Assignees: Sematech, Inc., Rutgers UniversityInventors: Kin P. Cheung, Dawei Heh, Byoung Hun Lee, Rino Choi
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Publication number: 20080100283Abstract: Methods for determining capacitance values of a metal on semiconductor (MOS) structure are provided. A time domain reflectometry circuit may be loaded with a MOS structure. The MOS structure may be biased with various voltages, and reflectometry waveforms from the applied voltage may be collected. The capacitance of the MOS structure may be determined from the reflectometry waveforms.Type: ApplicationFiled: October 25, 2006Publication date: May 1, 2008Inventors: Kin P. Cheung, Dawei Heh, Byoung Hun Lee, Rino Choi