Patents by Inventor Ho Seung Chang

Ho Seung 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).

  • Patent number: 7842606
    Abstract: Disclosed herein are a method of depositing a thin film and a method of manufacturing a semiconductor using the same, having high selectivity by increasing etching resistance while an extinction coefficient associated with anti-reflectivity is maintained low. The method of depositing a thin film according to the invention includes (a) depositing an carbon anti-reflective film on the bottom film of a substrate; and (b) adding a compound containing nitrogen (N), fluorine (F) or silicon (Si) to the surface or the inner portion of the carbon anti-reflective film, to deposit a thin film of a-C:N, a-C:F or a-C:Si, having high selectivity, to a thickness from 1 to 100 nm using an atomic layer deposition process. Therefore, an ultrathin film having etching resistance is formed on or in the carbon anti-reflective film and the density and compressive stress of the carbon anti-reflective film are increased, thus increasing etching selectivity.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: November 30, 2010
    Assignee: Integrated Process Systems Ltd
    Inventors: Ki Hoon Lee, Young Hoon Park, Sahng Kyoo Lee, Tae Wook Seo, Ho Seung Chang
  • Publication number: 20080166887
    Abstract: Disclosed herein are a method of depositing a thin film and a method of manufacturing a semiconductor using the same, having high selectivity by increasing etching resistance while an extinction coefficient associated with anti-reflectivity is maintained low. The method of depositing a thin film according to the invention includes (a) depositing an carbon anti-reflective film on the bottom film of a substrate; and (b) adding a compound containing nitrogen (N), fluorine (F) or silicon (Si) to the surface or the inner portion of the carbon anti-reflective film, to deposit a thin film of a-C:N, a-C:F or a-C:Si, having high selectivity, to a thickness from 1 to 100 nm using an atomic layer deposition process. Therefore, an ultrathin film having etching resistance is formed on or in the carbon anti-reflective film and the density and compressive stress of the carbon anti-reflective film are increased, thus increasing etching selectivity.
    Type: Application
    Filed: November 28, 2005
    Publication date: July 10, 2008
    Applicant: INTEGRATED PROCESS SYSTEMS LTD
    Inventors: Ki Hoon Lee, Young Hoon Park, Sahng Kyoo Lee, Tae Wook Seo, Ho Seung Chang
  • Patent number: 6884297
    Abstract: Provided is a thin film deposition reactor, including a reactor block having a deposition space, a wafer block, a top lid for covering and sealing the reactor block, a showerhead for spraying a reaction gas on the wafer block, and an exhaust line through which gases are exhausted from the reactor block. A lower pumping baffle and an upper pumping baffle are stacked on a bottom of the reactor block between an outer circumference of the wafer block and an inner circumference of the reactor block. A lower pumping region is formed between the lower pumping baffle and an inner sidewall of the reactor block. An upper pumping region is formed between the upper pumping baffle and the inner sidewall of the reactor block. The deposition space is connected to the upper pumping region by a plurality of upper pumping holes formed in the upper pumping baffle, and the upper pumping region is connected to the lower pumping region by a plurality of lower pumping holes formed in the lower pumping baffle.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: April 26, 2005
    Assignee: IPS Ltd.
    Inventors: Young Hoon Park, Choon Kum Baik, Hong Joo Lim, Ho Seung Chang
  • Publication number: 20040187780
    Abstract: Provided is a thin film deposition reactor, including a reactor block having a deposition space, a wafer block, a top lid for covering and sealing the reactor block, a showerhead for spraying a reaction gas on the wafer block, and an exhaust line through which gases are exhausted from the reactor block. A lower pumping baffle and an upper pumping baffle are stacked on a bottom of the reactor block between an outer circumference of the wafer block and an inner circumference of the reactor block. A lower pumping region is formed between the lower pumping baffle and an inner sidewall of the reactor block. An upper pumping region is formed between the upper pumping baffle and the inner sidewall of the reactor block. The deposition space is connected to the upper pumping region by a plurality of upper pumping holes formed in the upper pumping baffle, and the upper pumping region is connected to the lower pumping region by a plurality of lower pumping holes formed in the lower pumping baffle.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 30, 2004
    Inventors: Young Hoon Park, Choon Kum Baik, Hong Joo Lim, Ho Seung Chang
  • Patent number: 5715851
    Abstract: A wafer cassette through which a sonic wave is evenly transferred to a substrate in a quartz bath, and a cleaning system adopting the wafer cassette are provided. In the wafer cassette, a hole for evenly transferring the sonic wave to the substrate is formed. The cleaning system includes a vibration plate for generating a sonic wave, placed at the lowest portion of the cleaning system, a sink placed on the vibration plate, a quartz bath placed in the sink and spaced from the bottom of the sink, in which a wafer cassette is placed, a plurality of water supplies for supplying a cleaning solution, placed in the bottom of the quartz bath and a water drain for draining the cleaning solution overflown from the quartz bath, placed on the bottom of the sink, opposite to the water supplies, wherein the vibration plate is placed between the water drain and the water supplies.
    Type: Grant
    Filed: July 26, 1995
    Date of Patent: February 10, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyung Jung, Young-hwan Yun, Ho-seung Chang