Patents by Inventor Hong-tchoon Ha

Hong-tchoon Ha 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).

  • Mask for area forming selective grating and selective area growth and method for fabricating semiconductor device by utilizing the same
    Patent number: 6197608
    Abstract: A mask for forming a selective grating and selective area growth and a method for fabricating an electro-absorption modulated laser device by utilizing the mask are disclosed. The mask for forming the selective grating and the selective area growth comprises a + shaped island type pattern and a stripe type pattern to allow, during the formation of the selective grating, the selective grating to be formed only in a laser diode region, and to allow, during the selective area epitaxial growth, the selective area growth to be carried out only with the stripe pattern in the diode laser region after the island pattern being removed.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: March 6, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hong-tchoon Ha