Patents by Inventor Ching-Feng Chang

Ching-Feng Chang 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).

  • Publication number: 20240145597
    Abstract: A method of forming a semiconductor device includes: forming a gate structure over a fin that protrudes above a substrate; forming source/drain regions over the fin on opposing sides of the gate structure; forming a first dielectric layer and a second dielectric layer successively over the source/drain regions; performing a first etching process to form an opening in the first dielectric layer and in the second dielectric layer, where the opening exposes an underlying electrically conductive feature; after performing the first etching process, performing a second etching process to enlarge a lower portion of the opening proximate to the substrate; and forming a contact plug in the opening after the second etching process.
    Type: Application
    Filed: January 2, 2024
    Publication date: May 2, 2024
    Inventors: Yu-Lien Huang, Guan-Ren Wang, Ching-Feng Fu, Yun-Min Chang
  • Publication number: 20240113032
    Abstract: Interconnect structure packages (e.g., through silicon vias (TSV) packages, through interlayer via (TIV) packages) may be pre-manufactured as opposed to forming TIVs directly on a carrier substrate during a manufacturing process for a semiconductor die package at backend packaging facility. The interconnect structure packages may be placed onto a carrier substrate during manufacturing of a semiconductor device package, and a semiconductor die package may be placed on the carrier substrate adjacent to the interconnect structure packages. A molding compound layer may be formed around and in between the interconnect structure packages and the semiconductor die package.
    Type: Application
    Filed: April 25, 2023
    Publication date: April 4, 2024
    Inventors: Kai-Fung CHANG, Chin-Wei LIANG, Sheng-Feng WENG, Ming-Yu YEN, Cheyu LIU, Hung-Chih CHEN, Yi-Yang LEI, Ching-Hua HSIEH
  • Patent number: 11944412
    Abstract: A blood pressure detection device manufactured by a semiconductor process includes a substrate, a microelectromechanical element, a gas-pressure-sensing element, a driving-chip element, an encapsulation layer and a valve layer. The substrate includes inlet apertures. The microelectromechanical element and the gas-pressure-sensing element are stacked and integrally formed on the substrate. The encapsulation layer is encapsulated and positioned on the substrate. A flowing-channel space is formed above the microelectromechanical element and the gas-pressure-sensing element. The encapsulation layer includes an outlet aperture in communication with an airbag. The driving-chip element controls the microelectromechanical element, the gas-pressure-sensing element and valve units to transport gas.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: April 2, 2024
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Ying-Lun Chang, Ching-Sung Lin, Chi-Feng Huang, Yung-Lung Han, Chang-Yen Tsai, Wei-Ming Lee, Chun-Yi Kuo, Tsung-I Lin
  • Publication number: 20240071797
    Abstract: An apparatus in an overhead transport system is provided. The apparatus includes a hanger feature configured to be hung from a ceiling, a plate-like structure having a top surface and a bottom surface, the bottom surface being rotatably coupled to the hanger feature, and at least one pair of rail members mechanically coupled to the bottom surface of the plate-like structure by way of a plurality of yoke members.
    Type: Application
    Filed: August 26, 2022
    Publication date: February 29, 2024
    Inventors: Guancyun Li, Ching-Jung Chang, Chi-Feng Tung
  • Patent number: 11916147
    Abstract: A method of forming a semiconductor device includes: forming a gate structure over a fin that protrudes above a substrate; forming source/drain regions over the fin on opposing sides of the gate structure; forming a first dielectric layer and a second dielectric layer successively over the source/drain regions; performing a first etching process to form an opening in the first dielectric layer and in the second dielectric layer, where the opening exposes an underlying electrically conductive feature; after performing the first etching process, performing a second etching process to enlarge a lower portion of the opening proximate to the substrate; and forming a contact plug in the opening after the second etching process.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: February 27, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD
    Inventors: Yu-Lien Huang, Guan-Ren Wang, Ching-Feng Fu, Yun-Min Chang
  • Patent number: 10253264
    Abstract: A method of producing low CTE graphite electrodes from needle coke formed from a coal tar distillate material having a relatively high initial boiling point.
    Type: Grant
    Filed: October 1, 2017
    Date of Patent: April 9, 2019
    Assignee: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, Irwin C. Lewis, Ching-Feng Chang, Richard Thomas Lewis
  • Publication number: 20180282166
    Abstract: A precursor having at least five percent of lignin based coke and d002 spacing of more than 3.36 angstroms and less 3.44 for making graphite. Methods for making a green/graphite article include mixing coke derived from a petroleum product, a coal product or a bitumen product with coke derived from lignin. Alternatively, the precursor material for the various types of coke may be mixed and coked together. The mixture may be formed into a desired shape. The article may be subsequently carbonized and graphitized. The amount of lignin derived coke comprises a sufficient quantity to change at least a selected property of the graphite article.
    Type: Application
    Filed: June 5, 2018
    Publication date: October 4, 2018
    Inventors: Orest L. Adrianowycz, Bassam Alnasleh, Omer Gul, Andrew Adam Hausner, Robert E. Miller, Ching-Feng Chang
  • Patent number: 10011492
    Abstract: A precursor having at least five percent of lignin based coke and d002 spacing of more than 3.36 angstroms and less 3.44 for making graphite. Methods for making a green/graphite article include mixing coke derived from a petroleum product, a coal product or a bitumen product with coke derived from lignin. Alternatively, the precursor material for the various types of coke may be mixed and coked together. The mixture may be formed into a desired shape. The article may be subsequently carbonized and graphitized. The amount of lignin derived coke comprises a sufficient quantity to change at least a selected property of the graphite article.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: July 3, 2018
    Assignee: GrafTech International Holdings Inc.
    Inventors: Orest L. Adrianowycz, Bassam Alnasleh, Omer Gul, Andrew Adam Hausner, Robert E. Miller, Ching-Feng Chang
  • Publication number: 20180023004
    Abstract: A method of producing low CTE graphite electrodes from needle coke formed from a coal tar distillate material having a relatively high initial boiling point.
    Type: Application
    Filed: October 1, 2017
    Publication date: January 25, 2018
    Applicant: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, Irwin C. Lewis, Ching-Feng Chang, Richard Thomas Lewis
  • Patent number: 9777221
    Abstract: A method of producing low CTE graphite electrodes from needle coke formed from a coal tar distillate material having a relatively high initial boiling point.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: October 3, 2017
    Assignee: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, Irwin C. Lewis, Ching-Feng Chang, Richard Thomas Lewis
  • Patent number: 9758905
    Abstract: A method of making a carbon fiber comprising esterification of a lignin precursor with an acid, acid anhydride, or acyl halide, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a carbon residue selected from the group of coal based raw material, petroleum based raw material and combinations thereof, thereby forming a fiber precursor mixture; and spinning the fiber precursor mixture into a fiber. A method of making a carbon fiber comprising esterification of a lignin with an acid derivative, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a pitch, thereby forming a fiber precursor mixture; and spinning the fiber precursor mixture into a fiber. A method of making a carbon fiber comprising lowering the Tg of a lignin material, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a carbon residue, thereby forming a fiber precursor mixture and spinning the fiber precursor mixture into a fiber.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: September 12, 2017
    Assignee: GrafTech International Holdings Inc.
    Inventors: Bassam Alnasleh, Ching-Feng Chang, Omer Gul, Andrew Hausner, Robert Miller, Orest Adrianowycz
  • Patent number: 9683313
    Abstract: A method of making a carbon fiber includes heat treating a lignin precursor absent an active ingredient in an inert atmosphere to raise the glass transition temperature (Tg) of the precursor by at least five (5%) percent, forming a lignin precursor having an increased Tg (High Tg Lignin). The High Tg Lignin can be spun into a fiber. The fiber may then be stabilized to form a thermoset fiber. The time period for stabilizing the fiber is less than one hundred (100) hours.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: June 20, 2017
    Assignee: GrafTech International Holdings Inc.
    Inventors: Ching-Feng Chang, Bassam Alnasleh, Omer Gul, Robert E Miller, Andrew Hausner, Orest L Adrianowycz, Chong Chen, Brian Paul Askey
  • Publication number: 20160200579
    Abstract: A precursor having at least five percent of lignin based coke and d002 spacing of more than 3.36 angstroms and less 3.44 for making graphite. Methods for making a green/graphite article include mixing coke derived from a petroleum product, a coal product or a bitumen product with coke derived from lignin. Alternatively, the precursor material for the various types of coke may be mixed and coked together. The mixture may be formed into a desired shape. The article may be subsequently carbonized and graphitized. The amount of lignin derived coke comprises a sufficient quantity to change at least a selected property of the graphite article.
    Type: Application
    Filed: August 20, 2014
    Publication date: July 14, 2016
    Inventors: Orest L. Adrianowycz, Bassam Alnasleh, Omer Gul, Andrew Adam Hausner, Robert E. Miller, Ching-Feng Chang
  • Publication number: 20150284880
    Abstract: A method of making a carbon fiber comprising esterification of a lignin precursor with an acid, acid anhydride, or acyl halide, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a carbon residue selected from the group of coal based raw material, petroleum based raw material and combinations thereof, thereby forming a fiber precursor mixture; and spinning the fiber precursor mixture into a fiber. A method of making a carbon fiber comprising esterification of a lignin with an acid derivative, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a pitch, thereby forming a fiber precursor mixture; and spinning the fiber precursor mixture into a fiber. A method of making a carbon fiber comprising lowering the Tg of a lignin material, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a carbon residue, thereby forming a fiber precursor mixture and spinning the fiber precursor mixture into a fiber.
    Type: Application
    Filed: November 5, 2013
    Publication date: October 8, 2015
    Inventors: Bassam Alnasleh, Ching-Feng Chang, Omer Gul, Andrew Hausner, Robert Miller, Orest Adrianowycz
  • Publication number: 20150233023
    Abstract: A method of making a carbon fiber includes heat treating a lignin precursor absent an active ingredient in an inert atmosphere to raise the glass transition temperature (Tg) of the precursor by at least five (5%) percent, forming a lignin precursor having an increased Tg (High Tg Lignin). The High Tg Lignin can be spun into a fiber. The fiber may then be stabilized to form a thermoset fiber. The time period for stabilizing the fiber is less than one hundred (100) hours.
    Type: Application
    Filed: August 20, 2013
    Publication date: August 20, 2015
    Inventors: Ching-Feng Chang, Bassam Kamal Alnasleh, Omer Gul, Robert E Miller, Andrew Adam Hausner, Orest L Adrianowycz, Chong Chen, Brian Paul Askey
  • Patent number: 8828348
    Abstract: A reduced puffing needle coke is formed, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: September 9, 2014
    Assignee: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, Ching-Feng Chang, Irwin C. Lewis, Aaron Tomasek, Richard L. Shao
  • Patent number: 8747651
    Abstract: A high coking value pitch prepared from coal tar distillate and has a low softening point and a high carbon value while containing substantially no quinoline insolubles is disclosed. The pitch can be used as an impregnant or binder for producing carbon and graphite articles.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: June 10, 2014
    Assignee: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, Ching-Feng Chang, Irwin C. Lewis, Richard T. Lewis
  • Publication number: 20140102277
    Abstract: A height adjustment device for a band saw machine includes a fixing unit, an adjustment unit which is slidable relative to the fixing unit and at least one fixing member to secure the fixing unit the adjustment unit. Through the position of the adjustment unit relative to the fixing unit, the height of the band saw machine can be adjusted according to the user's height for the user to operate the band saw machine conveniently.
    Type: Application
    Filed: October 11, 2012
    Publication date: April 17, 2014
    Applicant: KING SAW MACHINERY LTD.
    Inventor: Ching-Feng CHANG
  • Patent number: 8658315
    Abstract: A reduced puffing needle coke is formed from decant oil, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: February 25, 2014
    Assignee: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, Ching-Feng Chang, Irwin C. Lewis, Aaron Tomasek, Richard L. Shao
  • Patent number: 8530094
    Abstract: A reduced puffing needle coke is formed, which includes a reduced nitrogen content within the coke so that the coke particles do not experience as much puffing during the formation of graphitized carbon articles produced from such coke upon heating to graphitization temperatures.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: September 10, 2013
    Assignee: Graftech International Holdings Inc.
    Inventors: Douglas J. Miller, Ching-Feng Chang, Irwin C. Lewis, Richart T. Lewis, Aaron Tomasek, Richard L. Shao