Patents by Inventor Chia Ching Yeo

Chia Ching Yeo 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: 11152410
    Abstract: An image sensor pixel comprises a semiconductor substrate and a gate having a dielectric layer with a first section and a second section over the semiconductor substrate. The first section of the dielectric layer is thinner than the second section. A photodiode is disposed substantially beneath the gate. A gate well region is disposed beneath the gate and overlying the photodiode. A first doped semiconductor region separates the gate well region from a second doped semiconductor region. The second doped semiconductor region is in the semiconductor substrate and is adjacent to the gate.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: October 19, 2021
    Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Khee Yong Lim, Chia Ching Yeo, Kiok Boone Elgin Quek
  • Publication number: 20210193713
    Abstract: An image sensor pixel comprises a semiconductor substrate and a gate having a dielectric layer with a first section and a second section over the semiconductor substrate. The first section of the dielectric layer is thinner than the second section. A photodiode is disposed substantially beneath the gate. A gate well region is disposed beneath the gate and overlying the photodiode. A first doped semiconductor region separates the gate well region from a second doped semiconductor region. The second doped semiconductor region is in the semiconductor substrate and is adjacent to the gate.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 24, 2021
    Inventors: KHEE YONG LIM, CHIA CHING YEO, KIOK BOONE ELGIN QUEK
  • Patent number: 10608108
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to extended drain MOSFET structures with a dual oxide thickness and methods of manufacture. The structure includes an extended drain metal oxide semiconductor transistor (EDMOS) comprising a gate structure with a dual oxide scheme.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: March 31, 2020
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Chia Ching Yeo, Khee Yong Lim, Kiok Boone Elgin Quek, Donald R. Disney
  • Publication number: 20190393338
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to extended drain MOSFET structures with a dual oxide thickness and methods of manufacture. The structure includes an extended drain metal oxide semiconductor transistor (EDMOS) comprising a gate structure with a dual oxide scheme.
    Type: Application
    Filed: June 20, 2018
    Publication date: December 26, 2019
    Inventors: Chia Ching YEO, Khee Yong LIM, Kiok Boone Elgin QUEK, Donald R. DISNEY
  • Patent number: 10395987
    Abstract: The disclosure is related to MV transistors with reduced gate induced drain leakage (GIDL) and impact ionization. The reduced GILD and impact ionization are achieved without increasing device pitch of the MV transistor. A low voltage (LV) device region and a medium voltage (MV) device region are disposed on the substrate. Non-extended spacers are disposed on the sidewalls of the LV gate in the LV device region; extended L shaped spacers are disposed on the sidewalls of the MV gate in the MV device region. The non-extended spacers and extended L shape spacers are patterned simultaneously. Extended L shaped spacers displace the MV heavily doped (HD) regions a greater distance from at least one sidewall of the MV gate to reduce the GIDL and impact ionization of the MV transistor.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: August 27, 2019
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Chia Ching Yeo, Kiok Boone Elgin Quek, Khee Yong Lim, Jae Han Cha, Yung Fu Chong
  • Publication number: 20170200649
    Abstract: The disclosure is related to MV transistors with reduced gate induced drain leakage (GIDL) and impact ionization. The reduced GILD and impact ionization are achieved without increasing device pitch of the MV transistor. A low voltage (LV) device region and a medium voltage (MV) device region are disposed on the substrate. Non-extended spacers are disposed on the sidewalls of the LV gate in the LV device region; extended L shaped spacers are disposed on the sidewalls of the MV gate in the MV device region. The non-extended spacers and extended L shape spacers are patterned simultaneously. Extended L shaped spacers displace the MV heavily doped (HD) regions a greater distance from at least one sidewall of the MV gate to reduce the GIDL and impact ionization of the MV transistor.
    Type: Application
    Filed: January 9, 2017
    Publication date: July 13, 2017
    Inventors: Chia Ching YEO, Kiok Boone Elgin QUEK, Khee Yong LIM, Jae Han CHA, Yung Fu CHONG
  • Patent number: 9653365
    Abstract: A method for fabricating an integrated circuit that include providing or obtaining an extremely thin silicon-on-insulator (ETSOI) substrate, dividing the ETSOI substrate into a low voltage field effect transistor (FET) region and one or both of a medium voltage FET region and a high voltage FET regions, and forming a low voltage FET within the low voltage FET regions and forming a medium and/or high voltage FET within the medium and/or high voltage FET region(s). Channel, source, and drain structures of the low voltage FET are formed in an upper silicon layer that is disposed above a buried oxide layer of the ETSOI substrate, whereas channel, source, and drain structures of the medium and/or high voltage FETs are formed at least partially below the upper silicon layer.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: May 16, 2017
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Khee Yong Lim, Jae Han Cha, Chia Ching Yeo, Kiok Boone Elgin Quek
  • Patent number: 8153537
    Abstract: There is provided a method for fabricating a semiconductor device comprising the formation of a first device in the first device region, the first device comprising first diffusion regions. A stressor layer covering the substrate in the first device region and the first device is subsequently formed, the stressor layer having a first stress value. A laser anneal to memorize at least a portion of the first stress value in the first device is carried out followed by an activation anneal after the laser anneal to activate dopants in the first diffusion regions.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: April 10, 2012
    Assignee: Globalfoundries Singapore Pte. Ltd.
    Inventors: Sai Hooi Yeong, Tao Wang, Shesh Mani Pandey, Chia Ching Yeo, Ying Keung Leung, Elgin Kiok Boone Quek
  • Publication number: 20120070971
    Abstract: There is provided a method for fabricating a semiconductor device comprising the formation of a first device in the first device region, the first device comprising first diffusion regions. A stressor layer covering the substrate in the first device region and the first device is subsequently formed, the stressor layer having a first stress value. A laser anneal to memorize at least a portion of the first stress value in the first device is carried out followed by an activation anneal after the laser anneal to activate dopants in the first diffusion regions.
    Type: Application
    Filed: September 19, 2011
    Publication date: March 22, 2012
    Applicant: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Sai Hooi YEONG, Tao WANG, Shesh Mani Pandey, Chia Ching YEO, Ying Keung LEUNG, Elgin Kiok Boone QUEK