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).
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Publication number: 20240021716Abstract: 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: ApplicationFiled: July 14, 2022Publication date: January 18, 2024Inventors: Lawrence Selvaraj Susai, Handoko Linewih, Francois Hebert, Hendro Mario, Siow Lee Chwa
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Publication number: 20230197320Abstract: 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: ApplicationFiled: December 17, 2021Publication date: June 22, 2023Inventors: Yudi SETIAWAN, Handoko LINEWIH, Siow Lee CHWA
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Patent number: 11637100Abstract: 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: GrantFiled: August 11, 2021Date of Patent: April 25, 2023Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Qiying Wong, Handoko Linewih, Yudi Setiawan, Chengang Feng, Siow Lee Chwa
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Publication number: 20230046455Abstract: 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: ApplicationFiled: August 11, 2021Publication date: February 16, 2023Inventors: QIYING WONG, HANDOKO LINEWIH, YUDI SETIAWAN, CHENGANG FENG, SIOW LEE CHWA
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Publication number: 20220181479Abstract: 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: ApplicationFiled: December 8, 2020Publication date: June 9, 2022Inventors: CHOR SHU CHENG, HANDOKO LINEWIH, SIOW LEE CHWA
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Patent number: 11315876Abstract: 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: GrantFiled: February 17, 2020Date of Patent: April 26, 2022Assignee: GlobalFoundries Singapore Pte. Ltd.Inventors: Xuesong Rao, Yun Ling Tan, Yudi Setiawan, Siow Lee Chwa
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Publication number: 20210257300Abstract: 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: ApplicationFiled: February 17, 2020Publication date: August 19, 2021Inventors: XUESONG RAO, YUN LING TAN, YUDI SETIAWAN, SIOW LEE CHWA
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Patent number: 10475803Abstract: 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: GrantFiled: April 6, 2018Date of Patent: November 12, 2019Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Anson Heryanto, Eng Huat Toh, Yongshun Sun, Yoke Leng Lim, Siow Lee Chwa
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Publication number: 20190312046Abstract: 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: ApplicationFiled: April 6, 2018Publication date: October 10, 2019Inventors: Anson HERYANTO, Eng Huat TOH, Yongshun SUN, Yoke Leng LIM, Siow Lee CHWA
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Patent number: 10199342Abstract: 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: GrantFiled: January 23, 2017Date of Patent: February 5, 2019Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Xiaohua Zhan, Xinfu Liu, Yoke Leng Lim, Siow Lee Chwa
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Publication number: 20180211927Abstract: 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: ApplicationFiled: January 23, 2017Publication date: July 26, 2018Inventors: Xiaohua ZHAN, Xinfu LIU, Yoke Leng LIM, Siow Lee CHWA
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Patent number: 9876019Abstract: 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: GrantFiled: July 13, 2016Date of Patent: January 23, 2018Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Xiong Zhang, Sunny Sadana, Yudi Setiawan, Yoke Leng Lim, Siow Lee Chwa
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Publication number: 20180019249Abstract: 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: ApplicationFiled: July 13, 2016Publication date: January 18, 2018Inventors: Xiong Zhang, Sunny Sadana, Yudi Setiawan, Yoke Leng Lim, Siow Lee Chwa
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Patent number: 9236391Abstract: 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: GrantFiled: June 8, 2015Date of Patent: January 12, 2016Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Yu Chen, Huajun Liu, Siow Lee Chwa, Soh Yun Siah, Yanxia Shao, Yoke Leng Lim
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Publication number: 20150270274Abstract: 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: ApplicationFiled: June 8, 2015Publication date: September 24, 2015Inventors: Yu CHEN, Huajun LIU, Siow Lee CHWA, Soh Yun SIAH, Yanxia SHAO, Yoke Leng LIM
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Patent number: 9111866Abstract: 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: GrantFiled: March 7, 2013Date of Patent: August 18, 2015Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Yu Chen, Huajun Liu, Siow Lee Chwa, Soh Yun Siah, Yanxia Shao, Yoke Leng Lim
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Publication number: 20150061156Abstract: 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: ApplicationFiled: September 3, 2014Publication date: March 5, 2015Inventors: Yi JIANG, Xiaohua ZHAN, Wanbing YI, Mahesh BHATKAR, Yoke Leng LIM, Siow Lee CHWA, Juan Boon TAN, Soh Yun SIAH
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Publication number: 20140252445Abstract: 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: ApplicationFiled: March 7, 2013Publication date: September 11, 2014Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.Inventors: Yu Chen, Huajun Liu, Siow Lee Chwa, Soh Yun Siah, Yanxia Shao, Yoke Leng Lim
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Publication number: 20100013003Abstract: 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: ApplicationFiled: September 24, 2009Publication date: January 21, 2010Applicant: Chartered Semiconductor Manufacturing, Ltd.Inventors: Xiaoyu CHEN, Donghua LIU, Sung Mun JUNG, Swee Tuck WOO, Rachel LOW, Louis LIM, Siow Lee CHWA
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Patent number: 7595237Abstract: 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: GrantFiled: April 27, 2007Date of Patent: September 29, 2009Assignee: Chartered Semiconductor Manufacturing, Ltd.Inventors: Xiaoyu Chen, Donghua Liu, Sung Mun Jung, Swee Tuck Woo, Rachel Low, Louis Lim, Siow Lee Chwa