Patents by Inventor Mao-Chan Chiu

Mao-Chan Chiu 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: 7407820
    Abstract: A method for monitoring oxide film deposition is disclosed. The method utilizes monitor wafers having silicon nitride films thereon instead of bare wafers to monitor the growth of silicon oxide films in a furnace. The method for monitoring oxide film deposition includes the following steps. First of all, a monitor wafer having silicon nitride film and a process wafer are provided. Next an oxide layer is formed on the monitor wafer and the process wafer, and the thickness of the oxide layer is controlled substantially equally on the monitor wafer and the process wafer. Then the thickness of the oxide layer on the monitor wafer and the process wafer is measured.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: August 5, 2008
    Assignee: Macronix International Co., Ltd.
    Inventors: Mao-Chan Chiu, May-Jun Chou, Ching-Tang Wang, Keng-Hui Su
  • Publication number: 20060177949
    Abstract: A method for monitoring oxide film deposition is disclosed. The method utilizes silicon wafers having silicon nitride films thereon instead of bare silicon wafers to monitor the growth of silicon oxide/dioxide films in a furnace. The method for monitoring oxide film deposition comprises the following steps. First of all, a wafer having silicon nitride film and a silicon wafer are provided. Next an oxide layer is formed on the wafer and the silicon wafer, and the thickness of the oxide layer is controlled substantially equally on the wafer and the silicon wafer. Then the thickness of the oxide layer on the wafer and the silicon wafer is measured.
    Type: Application
    Filed: February 9, 2005
    Publication date: August 10, 2006
    Applicant: Macronix International Co., Ltd.
    Inventors: Mao-Chan Chiu, May-Jun Chou, Ching-Tang Wang, Keng-Hui Su