Patents by Inventor Cha Won Koh

Cha Won Koh 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: 12372885
    Abstract: A substrate processing apparatus includes a photoresist coater applying a photoresist film on a substrate, a humidifier increasing an amount of moisture in an ambient to which the photoresist film on the substrate is exposed, and an exposer irradiating the photoresist film exposed to the ambient having the increased amount of moisture with light. The humidifier is disposed between the photoresist coater and the exposer.
    Type: Grant
    Filed: February 7, 2024
    Date of Patent: July 29, 2025
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seok Heo, Cha Won Koh, Sang Joon Hong, Hyun Woo Kim, Kyung-Won Kang, Dong-Wook Kim, Kyung Won Seo, Young Il Jang, Yong Suk Choi
  • Publication number: 20240248418
    Abstract: A substrate processing apparatus includes a photoresist coater applying a photoresist film on a substrate, a humidifier increasing an amount of moisture in an ambient to which the photoresist film on the substrate is exposed, and an exposer irradiating the photoresist film exposed to the ambient having the increased amount of moisture with light. The humidifier is disposed between the photoresist coater and the exposer.
    Type: Application
    Filed: February 7, 2024
    Publication date: July 25, 2024
    Inventors: Seok HEO, Cha Won KOH, Sang Joon HONG, Hyun Woo KIM, Kyung-Won KANG, Dong-Wook KIM, Kyung Won SEO, Young Il JANG, Yong Suk CHOI
  • Patent number: 11927890
    Abstract: A substrate processing apparatus includes a photoresist coater applying a photoresist film on a substrate, a humidifier increasing an amount of moisture in an ambient to which the photoresist film on the substrate is exposed, and an exposer irradiating the photoresist film exposed to the ambient having the increased amount of moisture with light. The humidifier is disposed between the photoresist coater and the exposer.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: March 12, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seok Heo, Cha Won Koh, Sang Joon Hong, Hyun Woo Kim, Kyung-Won Kang, Dong-Wook Kim, Kyung Won Seo, Young Il Jang, Yong Suk Choi
  • Publication number: 20230130025
    Abstract: A photoresist composition including an organometallic compound, and a method for fabricating a semiconductor device using the same are provided. The photoresist composition may include an organometallic compound, a radical sensitizer including a structure of Chemical formula 2-1 or Chemical formula 2-2, and a solvent. In Chemical formula 2-1, A1 is a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms, and R1, R2 and R3 are each independently hydrogen, a halogen, a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms, or a hetero-functional group. In Chemical formula 2-2, A2 is a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms, and R4 and R5 are each independently hydrogen, a halogen, a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms, or a hetero-functional group.
    Type: Application
    Filed: October 6, 2022
    Publication date: April 27, 2023
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Cha Won KOH, Tsunehiro NISHI, Ji Young PARK, Dong Il SHIN, Chang Soo WOO, Min Young LEE, Hyun Jae LEE
  • Patent number: 7329477
    Abstract: The present invention provides a process for using an amine contamination-protecting top-coating composition. Preferably, the amine contamination-protecting top-coating composition of the present invention comprises an amine contamination-protecting compound. Useful amine contamination-protecting compounds include amine derivatives; amino acid derivatives; amide derivatives; urethane derivatives; urea derivatives; salts thereof; and mixtures thereof. The amine contamination-protecting top-coating composition of the present invention reduces or eliminates problems such as T-topping due to a post exposure delay effect and/or difficulties in forming a fine pattern below 100 nm due to acid diffusion associated with conventional lithography processes involving a photoresist polymer containing an alicyclic main chain using a light source, such as KrF (248 nm), ArF (193 nm), F2 (157 nm), E-beam, ion beam and extremely ultraviolet (EUV).
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: February 12, 2008
    Assignee: Hynix Semiconductor Inc.
    Inventors: Jae Chang Jung, Keun Kyu Kong, Hyeong Soo Kim, Jin Soo Kim, Cha Won Koh, Sung Eun Hong, Geun Su Lee, Min Ho Jung, Ki Ho Baik
  • Patent number: 6984482
    Abstract: The present invention provides an over-coating composition comprising a basic compound for coating a photoresist composition to provide a vertical photoresist pattern.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: January 10, 2006
    Assignee: Hynix Semiconductor Inc.
    Inventors: Jae Chang Jung, Keun Kyu Kong, Hyeong Soo Kim, Jin Soo Kim, Cha Won Koh, Sung Eun Hong, Geun Su Lee, Min Ho Jung, Ki Ho Baik
  • Patent number: 6858371
    Abstract: Photoresist monomers, photoresist polymers prepared thereof, and photoresist compositions using the polymer are disclosed. More specifically, photoresist polymers comprising maleimide monomer represented by Formula 1, and a composition comprising the polymer thereof are disclosed. The photoresist composition has excellent etching resistance, heat resistance and adhesiveness, and can be developed in an aqueous tetramethylammonium hydroxide (TMAH) solution. As the composition has low light absorbance at 193 nm and 157 nm wavelength, and it is suitable for a process using ultraviolet light source such as VUV (157 nm) wherein, X1, X2, R1, R2 and R3 are defined in the specification.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: February 22, 2005
    Assignee: Hynix Semiconductor Inc.
    Inventors: Geun Su Lee, Jae Chang Jung, Min Ho Jung, Cha Won Koh, Ki Soo Shin
  • Patent number: 6833326
    Abstract: Disclosed is a method of forming a fine pattern in a semiconductor device using a photolithography process, which comprises: coating a photoresist layer for an I-line and a positive type ArF photoresist layer on a semiconductor substrate that includes a conductive layer; performing exposure and a first baking process on the resultant substrate by using an etch-mask of a desired pattern to produce alcohol radicals (OH−) or carboxyl acid (COOH) in the positive type ArF photoresist layer, in which a silylation reaction can be produced; removing the etch-mask; performing a development process to the resultant structure to form a first photoresist pattern; performing exposure and a second baking process on the substrate that includes the first photoresist pattern; performing a silylation process to the substrate to which the second baking process has been performed, by using an HMDS to form a silicon oxide layer on the surface of the first photoresist pattern through reaction between the alcohol radicals (OH
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: December 21, 2004
    Assignee: Hynix Semiconductor Inc.
    Inventors: Cha Won Koh, Yoon Suk Hyun
  • Patent number: 6770415
    Abstract: A photoresist polymer for a top-surface imaging process by silylation (TIPS), and a photoresist composition comprising the same. The protecting group of the present photoresist polymer is selectively protected in an exposed region, and thus a hydroxyl group is generated. The hydroxyl group reacts with the silylation agent to cause a silylation process. Accordingly, when the photoresist film is dry-developed, the exposed region only remains to form a negative pattern. In addition, the present photoresist composition has excellent adhesiveness to a substrate, thus preventing a pattern collapse in forming a minute pattern. As a result, the present photoresist composition is suitable for a lithography process using light sources such as ArF (193 nm), VUV (157 nm) and EUV (13 nm).
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: August 3, 2004
    Assignee: Hynix Semiconductor Inc.
    Inventors: Geun Su Lee, Cha Won Koh, Jae Chang Jung, Min Ho Jung, Ki Ho Baik
  • Patent number: 6764806
    Abstract: The present invention provides an over-coating composition comprising a basic compound for coating a photoresist composition to provide a vertical photoresist pattern.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: July 20, 2004
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Jae Chang Jung, Keun Kyu Kong, Cha Won Koh, Jin Soo Kim, Ki Ho Baik
  • Patent number: 6699644
    Abstract: The present invention provides a method for reducing or eliminating a poor pattern formation on a photoresist film by contacting the photoresist film with an alkaline solution prior to its exposure to light. Methods of the present invention significantly reduce or prevent T-topping and top-loss.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: March 2, 2004
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Geun Su Lee, Hyeong Soo Kim, Jin Soo Kim, Cha Won Koh, Sung Eun Hong, Jae Chang Jung, Min Ho Jung, Ki Ho Baik
  • Patent number: 6664031
    Abstract: A process for producing a photoresist pattern is disclosed. In particular, the disclosed process for forming a photoresist pattern reduces or prevents poor quality photoresist patterns formation, especially when a high light absorbing (i.e., low transmittance) photoresist resin is used. In one aspect, a photoresist film which has been exposed to light is treated with a gas phase basic compound to produce a substantially vertical photoresist pattern.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: December 16, 2003
    Assignee: Hynix Semiconductor Inc
    Inventors: Jae Chang Jung, Cha Won Koh, Jin Soo Kim, Sung Eun Hong, Keun Kyu Kong, Ki Ho Baik
  • Patent number: 6630281
    Abstract: Photoresist compositions for a Top-surface Imaging Process by Silylation (TIPS), and a process for forming a positive pattern according to the TIPS using the same. The photoresist composition for the TIPS comprises a cross-linker of following Formula 1 or 2. A protecting group of the cross-linker and a hydroxyl group of the photoresist polymer are selectively crosslinked in the exposed region, and the residual hydroxyl group reacts to a silylating agent in the non-exposed region by silylation. Thus, the non-exposed region only remains after the dry-development, thereby forming a positive pattern. In addition, the photoresist composition of the present invention is suitable for the TIPS lithography using light sources such as ArF (193 nm), VUV (157 nm) and EUV (13 nm). wherein, R1, R2, R3, R4, R5, R6 and R7 are as defined in the specification.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: October 7, 2003
    Assignee: Hynix Semiconductor Inc.
    Inventors: Cha Won Koh, Geun Su Lee, Ki Ho Baik
  • Publication number: 20030186547
    Abstract: Disclosed is a method of forming a fine pattern in a semiconductor device using a photolithography process, which comprises: coating a photoresist layer for an I-line and a positive type ArF photoresist layer on a semiconductor substrate that includes a conductive layer; performing exposure and a first baking process on the resultant substrate by using an etch-mask of a desired pattern to produce alcohol radicals (OH−) or carboxyl acid (COOH) in the positive type ArF photoresist layer, in which a silylation reaction can be produced; removing the etch-mask; performing a development process to the resultant structure to form a first photoresist pattern; performing exposure and a second baking process on the substrate that includes the first photoresist pattern; performing a silylation process to the substrate to which the second baking process has been performed, by using an HMDS to form a silicon oxide layer on the surface of the first photoresist pattern through reaction between the alcohol radicals (OH
    Type: Application
    Filed: January 8, 2003
    Publication date: October 2, 2003
    Inventors: Cha Won Koh, Yoon Suk Hyun
  • Patent number: 6627378
    Abstract: The present invention provides photoresist compositions for a Top-surface Imaging Process by Silylation (TIPS) and processes for using the same. The photoresist composition comprising a photoresist resin, a photoacid generator, an organic compound, and an amphoteric compound. The amphoteric compound prevents or reduces the amount of acid diffusion into the unexposed area and improves the contrast between the exposed and the unexposed areas. This reduction or prevention of acid diffusion into the unexposed areas reduces line edge roughness (LER).
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: September 30, 2003
    Assignee: Hyundai Electronics Industries Co., Ltd
    Inventor: Cha Won Koh
  • Patent number: 6586619
    Abstract: The present invention relates to novel monomers which can be used to form polymers which are useful in a photolithography employing a light source in the far ultraviolet region of the light spectrum, copolymers thereof, and photoresist compositions prepared therefrom. Photoresist monomers of the present invention are represented by the following Chemical Formula 1: wherein, R is substituted or non-substituted linear or branched (C1-C10) alkyl, substituted or non-substituted (C1-C10) ether, substituted or non-substituted (C1-C10) ester, or substituted or non-substituted (C1-C10) ketone; X and Y are independently CH2, CH2CH2, oxygen or sulfur; and i is 0 or an integer of 1 to 2.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: July 1, 2003
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Geun Su Lee, Cha Won Koh, Jae Chang Jung, Min Ho Jung, Ki Ho Baik
  • Publication number: 20030108815
    Abstract: The present invention provides to an amine contamination-protecting top-coating composition and a process for using the same. Preferably, the amine contamination-protecting top-coating composition of the present invention comprises an amine contamination-protecting compound. Useful amine contamination-protecting compounds include amine derivatives; amino acid derivatives; amide derivatives; urethane derivatives; urea derivatives; salts thereof, and mixtures thereof. The amine contamination-protecting top-coating composition of the present invention reduces or eliminates problems such as T-topping due to a post exposure delay effect and/or difficulties in forming a fine pattern below 100 nm due to acid diffusion associated with conventional lithography processes involving a photoresist polymer containing an alicyclic main chain using a light source, such as KrF (248 nm), ArF (193 nm), F2 (157 nm), E-beam, ion beam and extremely ultraviolet (EUV).
    Type: Application
    Filed: June 17, 2002
    Publication date: June 12, 2003
    Applicant: Hynix Semiconductor Inc.
    Inventors: Jae Chang Jung, Keun Kyu Kong, Hyeong Soo Kim, Jin Soo Kim, Cha Won Koh, Sung Eun Hong, Geun Su Lee, Min Ho Jung, Ki Ho Baik
  • Publication number: 20030013037
    Abstract: Photoresist monomers, photoresist polymers prepared thereof, and photoresist compositions using the polymer are disclosed. More specifically, photoresist polymers comprising maleimide monomer represented by Formula 1, and a composition comprising the polymer thereof are disclosed. The photoresist composition has excellent etching resistance, heat resistance and adhesiveness, and can be developed in an aqueous tetramethylammonium hydroxide (TMAH) solution. As the composition has low light absorbance at 193 nm and 157 nm wavelength, and it is suitable for a process using ultraviolet light source such as VUV (157 nm).
    Type: Application
    Filed: February 21, 2002
    Publication date: January 16, 2003
    Inventors: Geun Su Lee, Jae Chang Jung, Min Ho Jung, Cha Won Koh, Ki Soo Shin
  • Publication number: 20020091216
    Abstract: The present invention relates to novel monomers which can be used to form polymers which are useful in a photolithography employing a light source in the far ultraviolet region of the light spectrum, copolymers thereof, and photoresist compositions prepared therefrom.
    Type: Application
    Filed: February 19, 2002
    Publication date: July 11, 2002
    Applicant: Hyundai Electronics Industries Co., Ltd.
    Inventors: Geun Su Lee, Cha Won Koh, Jae Chang Jung, Min Ho Jung, Ki Ho Baik
  • Patent number: 6410670
    Abstract: The present invention relates to novel monomers and their polymers, which are useful in a photolithography employing a light source in the far ultraviolet region of the light spectrum, copolymers thereof, and photoresist compositions prepared therefrom. Photoresist monomers of the present invention are represented by the following Chemical Formula 1: wherein, R is substituted or non-substituted linear or branched (C1-C10)alkyl, substituted or non-substituted (C1-C10)ether, substituted or non-substituted (C1-C10)ester, or substituted or non-substituted (C1-C10)ketone; X and Y are independently CH2, CH2CH2, oxygen or sulfur; and i is 0 or an integer of 1 to 2.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: June 25, 2002
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Geun Su Lee, Cha Won Koh, Jae Chang Jung, Min Ho Jung, Ki Ho Baik