Patents by Inventor Hoa Thi Kieu

Hoa Thi Kieu 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: 6750156
    Abstract: In a method of depositing a titanium oxide layer on a substrate, a substrate is placed on a support in a process zone of a sputtering chamber. A target containing titanium faces the substrate. A sputtering gas containing an oxygen-containing gas, such as oxygen, and a non-reactive gas, such as argon, is introduced into the process zone. A pulsed DC voltage is applied to the target to sputter titanium from the target. The sputtered titanium combines with oxygen from the oxygen-containing gas to form a titanium oxide layer on the substrate. A multiple layer titanium oxide deposition process may also be implemented.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: June 15, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Hien-Minh Huu Le, Hoa Thi Kieu
  • Publication number: 20030077914
    Abstract: In a method of depositing a titanium oxide layer on a substrate, a substrate is placed on a support in a process zone of a sputtering chamber. A target containing titanium faces the substrate. A sputtering gas containing an oxygen-containing gas, such as oxygen, and a non-reactive gas, such as argon, is introduced into the process zone. A pulsed DC voltage is applied to the target to sputter titanium from the target. The sputtered titanium combines with oxygen from the oxygen-containing gas to form a titanium oxide layer on the substrate. A multiple layer titanium oxide deposition process may also be implemented.
    Type: Application
    Filed: October 24, 2001
    Publication date: April 24, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Hien-Minh Huu Le, Hoa Thi Kieu
  • Patent number: 5171412
    Abstract: The improved material deposition process of the present invention utilizes a first, low temperature deposition step followed by a second, high temperature/high power deposition step. In the first deposition step a collimation plate is placed between the sputtering target and the substrate, such that a collimated stream of sputtered material is deposited upon the substrate. The collimated stream provides a seed layer which aids in eliminating voids by partially filling the holes and grooves in the surface of the substrate. The second deposition step is conducted as a high temperature sputtering deposition. At the high temperature the sputtered material joins and flows with the seed layer, whereby the holes and grooves are more easily filled without voids and an improved planarized layer is achieved.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: December 15, 1992
    Assignee: Applied Materials, Inc.
    Inventors: Homoyoun Talieh, Avi Tepman, Hoa Thi Kieu, Chien-Rhone Wang