Patents by Inventor Donghua Liu

Donghua Liu 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).

  • Publication number: 20100013003
    Abstract: An integrated circuit (IC) is disclosed. The IC comprises a substrate with a cell region defined thereon. The cell region comprises a thin gate doped well tailored for transistors with thin gate dielectric layers. The IC also includes a non-volatile memory cell in the cell region. The non-volatile memory cell has an access transistor and a storage transistor. The access transistor includes an access gate with an access gate dielectric comprising a thick gate dielectric layer on the thin gate doped well. Wells for transistors with thick gate dielectric layers have a lower dopant concentration than the thin gate doped well.
    Type: Application
    Filed: September 24, 2009
    Publication date: January 21, 2010
    Applicant: Chartered Semiconductor Manufacturing, Ltd.
    Inventors: Xiaoyu CHEN, Donghua LIU, Sung Mun JUNG, Swee Tuck WOO, Rachel LOW, Louis LIM, Siow Lee CHWA
  • Patent number: 7595237
    Abstract: A non-volatile memory cell includes an access and a storage transistor coupled in series. The memory cell is formed on a thin gate well tailored for transistors with thin gate dielectrics. The access transistor is a hybrid transistor which includes a gate with a thick gate dielectric layer formed on the thin gate well.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: September 29, 2009
    Assignee: Chartered Semiconductor Manufacturing, Ltd.
    Inventors: Xiaoyu Chen, Donghua Liu, Sung Mun Jung, Swee Tuck Woo, Rachel Low, Louis Lim, Siow Lee Chwa
  • Publication number: 20080266944
    Abstract: A non-volatile memory cell includes an access and a storage transistor coupled in series. The memory cell is formed on a thin gate well tailored for transistors with thin gate dielectrics. The access transistor is a hybrid transistor which includes a gate with a thick gate dielectric layer formed on the thin gate well.
    Type: Application
    Filed: April 27, 2007
    Publication date: October 30, 2008
    Applicant: Chartered Semiconductor Manufacturing, Ltd.
    Inventors: Xiaoyu Chen, Donghua Liu, Sung Mun Jung, Swee Tuck Woo, Rachel Low, Louis Lim, Siow Lee Chwa
  • Patent number: 7332378
    Abstract: An integrated circuit memory system including a substrate formed with equidistant spaced shallow trench isolation regions. Forming active regions and dummy active regions within the substrate between the equidistant spaced shallow trench isolation regions. Forming sources and drains within the active regions. Providing wordlines and source lines extending in a first direction and bitlines extending in a second direction. Forming contact regions over the dummy active regions for strapping the wordlines and the source lines to the bitlines.
    Type: Grant
    Filed: March 4, 2006
    Date of Patent: February 19, 2008
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Sung Mun Jung, Ching Dong Wang, Louis Yoke Leng Lim, Swee Tuck Woo, Donghua Liu, Xiaoyu Chen
  • Publication number: 20070207558
    Abstract: An integrated circuit memory system including a substrate formed with equidistant spaced shallow trench isolation regions. Forming active regions and dummy active regions within the substrate between the equidistant spaced shallow trench isolation regions. Forming sources and drains within the active regions. Providing wordlines and source lines extending in a first direction and bitlines extending in a second direction. Forming contact regions over the dummy active regions for strapping the wordlines and the source lines to the bitlines.
    Type: Application
    Filed: March 4, 2006
    Publication date: September 6, 2007
    Applicant: CHARTERED SEMICONDUCTOR MANUFACTURING LTD.
    Inventors: Sung Mun Jung, Ching Dong Wang, Louis Yoke Leng Lim, Swee Tuck Woo, Donghua Liu, Xiaoyu Chen
  • Patent number: 7031542
    Abstract: The encoding rate controlling apparatus (9) is provided with a controlling device (9a, 9b) for performing a control for the encoding rate by changing a quantization scale code for quantizing the dynamic image information, and for conversing an average value of the encoding rate through all of the dynamic image information to an average value corresponding to a predetermined average value. The controlling device establishes on a time axis a plurality of change timings, each of which is a timing when the quantization scale code is changed, calculates the average value of the encoding rate corresponding to each of the established change timings, and performs the control for the encoding rate on the basis of the calculated average value.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: April 18, 2006
    Assignee: Pioneer Corporation
    Inventors: Tsutomu Takahashi, Donghua Liu, Yasuyuki Umehara
  • Publication number: 20040062306
    Abstract: The encoding rate controlling apparatus (9) is provided with a controlling device (9a, 9b) for performing a control for the encoding rate by changing a quantization scale code for quantizing the dynamic image information, and for conversing an average value of the encoding rate through all of the dynamic image information to an average value corresponding to a predetermined average value. The controlling device establishes on a time axis a plurality of change timings, each of which is a timing when the quantization scale code is changed, calculates the average value of the encoding rate corresponding to each of the established change timings, and performs the control for the encoding rate on the basis of the calculated average value.
    Type: Application
    Filed: July 11, 2003
    Publication date: April 1, 2004
    Applicant: Pioneer Corporation
    Inventors: Tsutomu Takahashi, Donghua Liu, Yasuyuki Umehara
  • Patent number: 6650787
    Abstract: The encoding rate controlling apparatus (9) is provided with a controlling device (9a, 9b) for performing a control for the encoding rate by changing a quantization scale code for quantizing the dynamic image information, and for converging an average value of the encoding rate through all of the dynamic image information to an average value corresponding to a predetermined average value. The controlling device establishes on a time axis a plurality of change timings, each of which is a timing when the quantization scale code is changed, calculates the average value of the encoding rate corresponding to each of the established change timings, and performs the control for the encoding rate on the basis of the calculated average value.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: November 18, 2003
    Assignee: Pioneer Corporation
    Inventors: Tsutomu Takahashi, Donghua Liu, Yasuyuki Umehara