Patents by Inventor Siow Lee Chwa

Siow Lee Chwa 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: 20240021716
    Abstract: Structures including compound semiconductor-based devices and silicon-based devices integrated on a semiconductor substrate and methods of forming such structures. The structure comprises a layer stack on a substrate, a conductive contact extending in a vertical direction fully through the layer stack to the substrate, and a device structure including a source ohmic contact and a drain ohmic contact. The layer stack including a plurality of semiconductor layers each comprising a compound semiconductor material, the conductive contact is arranged in the layer stack to separate a first portion of the layer stack from a second portion of the layer stack, and the source ohmic contact and the drain ohmic contact have a contacting relationship with at least one of the plurality of semiconductor layers of the first portion of the layer stack.
    Type: Application
    Filed: July 14, 2022
    Publication date: January 18, 2024
    Inventors: Lawrence Selvaraj Susai, Handoko Linewih, Francois Hebert, Hendro Mario, Siow Lee Chwa
  • Publication number: 20230197320
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to heat dissipating structures and methods of manufacture. The structure includes: a thin film resistor within a back end of the line structure; and a heat dissipating structure below the thin film resistor, the heat dissipating structure includes a top plate with a slotted configuration and being within the back end of the line structure.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 22, 2023
    Inventors: Yudi SETIAWAN, Handoko LINEWIH, Siow Lee CHWA
  • Patent number: 11637100
    Abstract: The present disclosure generally relates to a semiconductor device having a capacitor and a resistor and a method of forming the same. More particularly, the present disclosure relates to a metal-insulator-metal (MIM) capacitor and a thin film resistor (TFR) formed in a back end of line portion of an integrated circuit (IC) chip.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: April 25, 2023
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Qiying Wong, Handoko Linewih, Yudi Setiawan, Chengang Feng, Siow Lee Chwa
  • Publication number: 20230046455
    Abstract: The present disclosure generally relates to a semiconductor device having a capacitor and a resistor and a method of forming the same. More particularly, the present disclosure relates to a metal-insulator-metal (MIM) capacitor and a thin film resistor (TFR) formed in a back end of line portion of an integrated circuit (IC) chip.
    Type: Application
    Filed: August 11, 2021
    Publication date: February 16, 2023
    Inventors: QIYING WONG, HANDOKO LINEWIH, YUDI SETIAWAN, CHENGANG FENG, SIOW LEE CHWA
  • Publication number: 20220181479
    Abstract: A semiconductor device is provided. The semiconductor device comprises a substrate having a wide bandgap semiconductor material and an epitaxial layer arranged over a first surface of the substrate. A source region having a first conductivity type may be arranged in the epitaxial layer. A well region having a second conductivity type may be laterally adjacent to the source region. The first conductivity type may be different from the second conductivity type. A gate dielectric layer may be arranged over the well region. A field dielectric layer may be arranged over the epitaxial layer adjacent to the well region.
    Type: Application
    Filed: December 8, 2020
    Publication date: June 9, 2022
    Inventors: CHOR SHU CHENG, HANDOKO LINEWIH, SIOW LEE CHWA
  • Patent number: 11315876
    Abstract: A structure comprises a substrate and a conductive pad disposed over the substrate. A conductive layer overlies the conductive pad. A via is disposed over the conductive pad. The via penetrates through the conductive layer and touches a surface of the conductive pad.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: April 26, 2022
    Assignee: GlobalFoundries Singapore Pte. Ltd.
    Inventors: Xuesong Rao, Yun Ling Tan, Yudi Setiawan, Siow Lee Chwa
  • Publication number: 20210257300
    Abstract: A structure comprises a substrate and a conductive pad disposed over the substrate. A conductive layer overlies the conductive pad. A via is disposed over the conductive pad. The via penetrates through the conductive layer and touches a surface of the conductive pad.
    Type: Application
    Filed: February 17, 2020
    Publication date: August 19, 2021
    Inventors: XUESONG RAO, YUN LING TAN, YUDI SETIAWAN, SIOW LEE CHWA
  • Patent number: 10475803
    Abstract: Method for forming a memory device are disclosed. Embodiments include forming memory cells over a substrate, each memory cell includes a control gate (CG) formed over a floating gate (FG) and a select gate (SG) formed adjacent to a first side of the CG and FG, wherein a vertical oxide layer is formed between the SG and the CG and FG, forming an implant mask layer over a portion of the SG, CG and vertical oxide of each memory cell; and implanting dopants into the substrate using the implant mask to form source drain (S/D) regions between the memory cells.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: November 12, 2019
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Anson Heryanto, Eng Huat Toh, Yongshun Sun, Yoke Leng Lim, Siow Lee Chwa
  • Publication number: 20190312046
    Abstract: Method for forming a memory device are disclosed. Embodiments include forming memory cells over a substrate, each memory cell includes a control gate (CG) formed over a floating gate (FG) and a select gate (SG) formed adjacent to a first side of the CG and FG, wherein a vertical oxide layer is formed between the SG and the CG and FG, forming an implant mask layer over a portion of the SG, CG and vertical oxide of each memory cell; and implanting dopants into the substrate using the implant mask to form source drain (S/D) regions between the memory cells.
    Type: Application
    Filed: April 6, 2018
    Publication date: October 10, 2019
    Inventors: Anson HERYANTO, Eng Huat TOH, Yongshun SUN, Yoke Leng LIM, Siow Lee CHWA
  • Patent number: 10199342
    Abstract: A device and methods of forming the device are disclosed. A substrate with a circuits component and a dielectric layer with interconnects is provided. A pad level dielectric layer is formed over the dielectric layer. A primary passivation layer is formed over the pad level dielectric layer with pad interconnects. The substrate is subjected to an alloying process. During the alloying process, the primary passivation layer prevents or reduces formation of hillocks on surfaces of the pad interconnects to improve surface smoothness of the pad interconnects. Pad openings are formed in the pad level dielectric layer to expose top surfaces of the pad interconnects. A cap dielectric layer is formed on the substrate and lines the primary passivation layer as well as the exposed top surfaces of the pad interconnects. A final passivation layer is formed on the substrate and covers the cap dielectric layer. The final passivation layer is patterned to form final passivation openings corresponding to the pad openings.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: February 5, 2019
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Xiaohua Zhan, Xinfu Liu, Yoke Leng Lim, Siow Lee Chwa
  • Publication number: 20180211927
    Abstract: A device and methods of forming the device are disclosed. A substrate with a circuits component and a dielectric layer with interconnects is provided. A pad level dielectric layer is formed over the dielectric layer. A primary passivation layer is formed over the pad level dielectric layer with pad interconnects. The substrate is subjected to an alloying process. During the alloying process, the primary passivation layer prevents or reduces formation of hillocks on surfaces of the pad interconnects to improve surface smoothness of the pad interconnects. Pad openings are formed in the pad level dielectric layer to expose top surfaces of the pad interconnects. A cap dielectric layer is formed on the substrate and lines the primary passivation layer as well as the exposed top surfaces of the pad interconnects. A final passivation layer is formed on the substrate and covers the cap dielectric layer. The final passivation layer is patterned to form final passivation openings corresponding to the pad openings.
    Type: Application
    Filed: January 23, 2017
    Publication date: July 26, 2018
    Inventors: Xiaohua ZHAN, Xinfu LIU, Yoke Leng LIM, Siow Lee CHWA
  • Patent number: 9876019
    Abstract: Methods of producing integrated circuits and integrated circuits produced by those methods are provided. In an exemplary embodiment, a method of producing an integrated circuit includes forming first and second shallow trench isolations within a substrate, where the first and second shallow trench isolations have an initial shallow trench height. A base well is formed in the substrate, where the base well is positioned between the first and second shallow trench isolations. A gate dielectric is formed overlying the base well, and a floating gate is formed overlying the gate dielectric. An initial shallow trench height is reduced to a reduced shallow trench height shorter than the initial shallow trench height after the floating gate is formed.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: January 23, 2018
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Xiong Zhang, Sunny Sadana, Yudi Setiawan, Yoke Leng Lim, Siow Lee Chwa
  • Publication number: 20180019249
    Abstract: Methods of producing integrated circuits and integrated circuits produced by those methods are provided. In an exemplary embodiment, a method of producing an integrated circuit includes forming first and second shallow trench isolations within a substrate, where the first and second shallow trench isolations have an initial shallow trench height. A base well is formed in the substrate, where the base well is positioned between the first and second shallow trench isolations. A gate dielectric is formed overlying the base well, and a floating gate is formed overlying the gate dielectric. An initial shallow trench height is reduced to a reduced shallow trench height shorter than the initial shallow trench height after the floating gate is formed.
    Type: Application
    Filed: July 13, 2016
    Publication date: January 18, 2018
    Inventors: Xiong Zhang, Sunny Sadana, Yudi Setiawan, Yoke Leng Lim, Siow Lee Chwa
  • Patent number: 9236391
    Abstract: Fabrication of a slim split gate cell and the resulting device are disclosed. Embodiments include forming a first gate on a substrate, the first gate having an upper surface and a hard-mask covering the upper surface, forming an interpoly isolation layer on side surfaces of the first gate and the hard-mask, forming a second gate on one side of the first gate, with an uppermost point of the second gate below the upper surface of the first gate, removing the hard-mask, forming spacers on exposed vertical surfaces, and forming a salicide on exposed surfaces of the first and second gates.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: January 12, 2016
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Yu Chen, Huajun Liu, Siow Lee Chwa, Soh Yun Siah, Yanxia Shao, Yoke Leng Lim
  • Publication number: 20150270274
    Abstract: Fabrication of a slim split gate cell and the resulting device are disclosed. Embodiments include forming a first gate on a substrate, the first gate having an upper surface and a hard-mask covering the upper surface, forming an interpoly isolation layer on side surfaces of the first gate and the hard-mask, forming a second gate on one side of the first gate, with an uppermost point of the second gate below the upper surface of the first gate, removing the hard-mask, forming spacers on exposed vertical surfaces, and forming a salicide on exposed surfaces of the first and second gates.
    Type: Application
    Filed: June 8, 2015
    Publication date: September 24, 2015
    Inventors: Yu CHEN, Huajun LIU, Siow Lee CHWA, Soh Yun SIAH, Yanxia SHAO, Yoke Leng LIM
  • Patent number: 9111866
    Abstract: Fabrication of a slim split gate cell and the resulting device are disclosed. Embodiments include forming a first gate on a substrate, the first gate having an upper surface and a hard-mask covering the upper surface, forming an interpoly isolation layer on side surfaces of the first gate and the hard-mask, forming a second gate on one side of the first gate, with an uppermost point of the second gate below the upper surface of the first gate, removing the hard-mask, forming spacers on exposed vertical surfaces, and forming a salicide on exposed surfaces of the first and second gates.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: August 18, 2015
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Yu Chen, Huajun Liu, Siow Lee Chwa, Soh Yun Siah, Yanxia Shao, Yoke Leng Lim
  • Publication number: 20150061156
    Abstract: A bonding pad and a method of manufacturing a bonding pad are presented. The method includes providing a substrate prepared with circuits component and an interlevel dielectric (ILD) layer with interconnects. A final passivation level is formed on the substrate surface and includes a pad opening. A wire bond in contact with the pad interconnect is formed in the pad opening. The pad interconnect is suitable for, for example, copper wire bond and can avoid the formation of intermetallic compound during wire bonding. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 5, 2015
    Inventors: Yi JIANG, Xiaohua ZHAN, Wanbing YI, Mahesh BHATKAR, Yoke Leng LIM, Siow Lee CHWA, Juan Boon TAN, Soh Yun SIAH
  • Publication number: 20140252445
    Abstract: Fabrication of a slim split gate cell and the resulting device are disclosed. Embodiments include forming a first gate on a substrate, the first gate having an upper surface and a hard-mask covering the upper surface, forming an interpoly isolation layer on side surfaces of the first gate and the hard-mask, forming a second gate on one side of the first gate, with an uppermost point of the second gate below the upper surface of the first gate, removing the hard-mask, forming spacers on exposed vertical surfaces, and forming a salicide on exposed surfaces of the first and second gates.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 11, 2014
    Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Yu Chen, Huajun Liu, Siow Lee Chwa, Soh Yun Siah, Yanxia Shao, Yoke Leng Lim
  • 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