Patents by Inventor Sang-jun Choi

Sang-jun Choi 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).

  • Patent number: 11493849
    Abstract: Provided is an anti-reflective hardmask composition including: (a) a polymer composed of an indolocarbazole represented by the following Chemical Formula 1 or a polymeric blend containing the same; and (b) an organic solvent.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: November 8, 2022
    Assignee: OLAS CO., LTD.
    Inventors: Sang Jun Choi, Wanuk Kim
  • Publication number: 20220259354
    Abstract: Disclosed are a photosensitive polymer including a repeating unit of Chemical Formula 1 or Chemical Formula 2 derived from a vinyl heteroaromatic compound and a resist composition including the same. In Chemical Formula 1 or 2, R1 and R2 are hydrogen or a methyl group, X is a carbon, sulfur, or a nitrogen atom, and n is 1 or 2.
    Type: Application
    Filed: February 14, 2022
    Publication date: August 18, 2022
    Inventors: Sang Jun CHOI, Youngsun Kim, Jaebuem Oh
  • Patent number: 11348810
    Abstract: A dry etching device which can be used to etch products or used in processes regardless of materials and exhibits an excellent accuracy, and a method for controlling the same. The dry etching device includes: an anode part; a cathode part disposed at an upper side of the anode part and facing the anode part, receiving bi-directional voltage power in which polarity of a voltage alternates between a positive voltage and a negative voltage depending on time, and spaced apart from the anode part; a leveling part disposed in close contact with a surface of the cathode part facing the anode part, and for positioning a work-piece in a flat state; a holding part for holding the work-piece and the leveling part to the surface of the cathode part facing the anode part; and a bi-directional voltage power supplier for applying the bi-directional voltage power to the cathode part.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: May 31, 2022
    Assignee: VAULT CREATION CO., LTD.
    Inventors: Sang Jun Choi, Ji Sung Kang
  • Patent number: 11348802
    Abstract: The present invention relates to a dry etching apparatus which can be applied regardless of materials. The dry etching apparatus may include: an anode unit; a cathode unit configured to receive a bidirectional voltage source of which the voltage polarity alternates between a positive voltage and a negative voltage with time, and separated from the anode unit; a positioning unit configured to position a work piece at a surface of the cathode unit, facing the anode unit; and a bidirectional voltage source supply unit configured to apply the bidirectional voltage source to the cathode unit.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: May 31, 2022
    Assignee: VAULT CREATION CO., LTD.
    Inventors: Sang Jun Choi, Ji Sung Kang
  • Patent number: 11244557
    Abstract: The present invention determines whether a fire or disaster has occurred in various fields based on voices in an exigency situation and surrounding environmental sounds, and automatically transmits an alarm, so that it can detect the occurrence of a disaster rapidly and accurately. The system of the present invention is installed in a building or is provided as a program of a computer or an application of a smartphone, so that the installation and maintenance of the system are simple.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: February 8, 2022
    Assignee: KEEPIN CO., LTD.
    Inventor: Sang Jun Choi
  • Publication number: 20220020266
    Abstract: The present invention determines whether a fire or disaster has occurred in various fields based on voices in an exigency situation and surrounding environmental sounds, and automatically transmits an alarm, so that it can detect the occurrence of a disaster rapidly and accurately. The system of the present invention is installed in a building or is provided as a program of a computer or an application of a smartphone, so that the installation and maintenance of the system are simple.
    Type: Application
    Filed: February 9, 2021
    Publication date: January 20, 2022
    Inventor: Sang Jun CHOI
  • Patent number: 11031233
    Abstract: A layer stack over a substrate is etched using a photoresist pattern deposited on the layer stack as a first mask. The photoresist pattern is in-situ cured using plasma. At least a portion of the photoresist pattern can be modified by curing. In one embodiment, silicon by-products are formed on the photoresist pattern from the plasma. In another embodiment, a carbon from the plasma is embedded into the photoresist pattern. In yet another embodiment, the plasma produces an ultraviolet light to cure the photoresist pattern. The cured photoresist pattern is slimmed. The layer stack is etched using the slimmed photoresist pattern as a second mask.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: June 8, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Kyeong Tae Lee, Sang Wook Kim, Daehee Weon, Sang-jun Choi, Sreekar Bhaviripudi, Jahyong Kuh
  • Patent number: 10858533
    Abstract: An anti-reflective hardmask composition contains: (a) an arylcarbazole derivative polymer represented by the following Chemical Formula 1 or a polymer blend containing the same; and (b) an organic solvent in Chemical Formula 1, A1 and A2 are each independently a (C6-C40) aromatic aryl group and are the same as or different from each other, R is t-butyloxycarbonyl (t-BOC), ethoxyethyl, isopropyloxyethyl, or tetrahydropyranyl, X1 and X2 are each a polymerization linkage group derived from aldehyde or an aldehyde acetal monomer capable of being one-to-one polymerized with an arylcarbazole derivative and A2 in the presence of an acid catalyst, m/(m+n) is in a range of 0.05 to 0.8, and a weight average molecular weight (Mw) of an the polymer is in a range of 1,000 to 30,000.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: December 8, 2020
    Assignees: OLAS CO., LTD.
    Inventor: Sang Jun Choi
  • Publication number: 20200372999
    Abstract: The present embodiment provides a method for calculating food intake comprising, an operation of detecting a biometric reaction of a food intake target; an operation of specifying a biometric trait which identifies the food intake target based on the biometric reaction; an operation of obtaining unit food intake which is an amount of food that the food intake target consumes in one swallow, based on the biometric trait; an operation of measuring the number of swallows of the food intake target; and an operation of calculating total food intake which is a total amount of food consumed by the food intake target from the unit food intake and the number of swallows; wherein the biometric reaction and the unit food intake varies depending on the biometric trait.
    Type: Application
    Filed: March 19, 2020
    Publication date: November 26, 2020
    Inventor: Sang Jun CHOI
  • Publication number: 20200233305
    Abstract: Provided is an anti-reflective hardmask composition including: (a) a polymer composed of an indolocarbazole represented by the following Chemical Formula 1 or a polymeric blend containing the same; and (b) an organic solvent.
    Type: Application
    Filed: January 17, 2020
    Publication date: July 23, 2020
    Inventors: Sang Jun CHOI, Wanuk KIM
  • Patent number: 10636674
    Abstract: The present invention relates to a control method of a dry etching apparatus which can be applied regardless of materials. The control method of a dry etching apparatus may include: a work piece positioning step of positioning a work piece close to a surface of a cathode unit, facing an anode unit; a bidirectional voltage source applying step of applying a voltage to the cathode unit, the voltage having a polarity alternating between a positive voltage and a negative voltage with time; and an etching step of etching the surface of the work piece using plasma generated by the bidirectional voltage source applied to the cathode unit.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: April 28, 2020
    Assignee: VAULT CREATION CO., LTD.
    Inventors: Sang Jun Choi, Ji Sung Kang
  • Patent number: 10580657
    Abstract: Systems and methods discussed herein are directed towards processing of substrates, including forming a plurality of features in a target layer on a substrate. The formation of the plurality of features includes a main etch operation that forms the plurality of features to a first depth in the target layer. The main etch operation is followed by a phase shift sync pulsing (PSSP) operation, and these two operations are repeated iteratively to form the features to a predetermined depth. The PSSP operation includes one or more cycles of RF source power and RF bias power, this cycle deposits a protective coating in and on the features and then etches a portion of the protective coating to expose portions of the feature.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: March 3, 2020
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Chang Wook Doh, Zhibin Wang, Byungkook Kong, Sang Wook Kim, Sang-Jun Choi
  • Publication number: 20200013610
    Abstract: A layer stack over a substrate is etched using a photoresist pattern deposited on the layer stack as a first mask. The photoresist pattern is in-situ cured using plasma. At least a portion of the photoresist pattern can be modified by curing. In one embodiment, silicon by-products are formed on the photoresist pattern from the plasma. In another embodiment, a carbon from the plasma is embedded into the photoresist pattern. In yet another embodiment, the plasma produces an ultraviolet light to cure the photoresist pattern. The cured photoresist pattern is slimmed. The layer stack is etched using the slimmed photoresist pattern as a second mask.
    Type: Application
    Filed: September 19, 2019
    Publication date: January 9, 2020
    Inventors: Kyeong Tae Lee, Sang Wook Kim, Daehee Weon, Sang-jun Choi, Sreekar Bhaviripudi, Jahyong Kuh
  • Publication number: 20190371617
    Abstract: Systems and methods discussed herein are directed towards processing of substrates, including forming a plurality of features in a target layer on a substrate. The formation of the plurality of features includes a main etch operation that forms the plurality of features to a first depth in the target layer. The main etch operation is followed by a phase shift sync pulsing (PSSP) operation, and these two operations are repeated iteratively to form the features to a predetermined depth. The PSSP operation includes one or more cycles of RF source power and RF bias power, this cycle deposits a protective coating in and on the features and then etches a portion of the protective coating to expose portions of the feature.
    Type: Application
    Filed: July 9, 2019
    Publication date: December 5, 2019
    Inventors: Chang Wook DOH, Zhibin WANG, Byungkook KONG, Sang Wook KIM, Sang-Jun CHOI
  • Patent number: 10460921
    Abstract: A layer stack over a substrate is etched using a photoresist pattern deposited on the layer stack as a first mask. The photoresist pattern is in-situ cured using plasma. At least a portion of the photoresist pattern can be modified by curing. In one embodiment, silicon by-products are formed on the photoresist pattern from the plasma. In another embodiment, a carbon from the plasma is embedded into the photoresist pattern. In yet another embodiment, the plasma produces an ultraviolet light to cure the photoresist pattern. The cured photoresist pattern is slimmed. The layer stack is etched using the slimmed photoresist pattern as a second mask.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: October 29, 2019
    Assignee: Applied Materials, Inc.
    Inventors: Kyeong Tae Lee, Sang Wook Kim, Daehee Weon, Sang-jun Choi, Sreekar Bhaviripudi, Jahyong Kuh
  • Publication number: 20190318942
    Abstract: A dry etching device which can be used to etch products or used in processes regardless of materials and exhibits an excellent accuracy, and a method for controlling the same. The dry etching device includes: an anode part; a cathode part disposed at an upper side of the anode part and facing the anode part, receiving bi-directional voltage power in which polarity of a voltage alternates between a positive voltage and a negative voltage depending on time, and spaced apart from the anode part; a leveling part disposed in close contact with a surface of the cathode part facing the anode part, and for positioning a work-piece in a flat state; a holding part for holding the work-piece and the leveling part to the surface of the cathode part facing the anode part; and a bi-directional voltage power supplier for applying the bi-directional voltage power to the cathode part.
    Type: Application
    Filed: October 13, 2017
    Publication date: October 17, 2019
    Applicant: VAULT CREATION CO., LTD.
    Inventors: Sang Jun CHOI, Ji Sung KANG
  • Publication number: 20190309183
    Abstract: An anti-reflective hardmask composition contains: (a) an arylcarbazole derivative polymer represented by the following Chemical Formula 1 or a polymer blend containing the same; and (b) an organic solvent.
    Type: Application
    Filed: April 10, 2019
    Publication date: October 10, 2019
    Inventor: Sang Jun CHOI
  • Patent number: 10347500
    Abstract: Systems and methods discussed herein are directed towards processing of substrates, including forming a plurality of features in a target layer on a substrate. The formation of the plurality of features includes a main etch operation that forms the plurality of features to a first depth in the target layer. The main etch operation is followed by a phase shift sync pulsing (PSSP) operation, and these two operations are repeated iteratively to form the features to a predetermined depth. The PSSP operation includes one or more cycles of RF source power and RF bias power, this cycle deposits a protective coating in and on the features and then etches a portion of the protective coating to expose portions of the feature.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: July 9, 2019
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Chang Wook Doh, Zhibin Wang, Byungkook Kong, Sang Wook Kim, Sang-Jun Choi
  • Publication number: 20190103286
    Abstract: The present invention relates to a control method of a dry etching apparatus which can be applied regardless of materials. The control method of a dry etching apparatus may include: a work piece positioning step of positioning a work piece close to a surface of a cathode unit, facing an anode unit; a bidirectional voltage source applying step of applying a voltage to the cathode unit, the voltage having a polarity alternating between a positive voltage and a negative voltage with time; and an etching step of etching the surface of the work piece using plasma generated by the bidirectional voltage source applied to the cathode unit.
    Type: Application
    Filed: April 18, 2017
    Publication date: April 4, 2019
    Applicant: VAULT CREATION CO., LTD.
    Inventors: Sang Jun CHOI, Ji Sung KANG
  • Patent number: 10189947
    Abstract: An anti-reflective hardmask composition is provided.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: January 29, 2019
    Inventor: Sang Jun Choi