Patents by Inventor Lup San Leong
Lup San Leong 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: 20230301214Abstract: According to various embodiments, there may be provided an interposer. The interposer including: a substrate; a dielectric layer disposed on the substrate; a via disposed entirely within the dielectric layer; a resistive film layer disposed to line the via; a metal interconnect disposed in the resistive layer lined via; and a plurality of metal lines disposed in the dielectric layer, the plurality of metal lines including a first metal line connected to the metal interconnect, a second metal line connected to the resistive film layer at a first point, and a third metal line connected to the resistive film layer at a second point.Type: ApplicationFiled: March 18, 2022Publication date: September 21, 2023Inventors: Lup San LEONG, Juan Boon TAN, Benfu LIN, Yi JIANG
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Patent number: 11744085Abstract: A semiconductor device includes a first insulating layer; a second insulating layer arranged over the first insulating layer; a memory structure arranged within a memory region and including a resistance changing memory element within the first insulating layer; and a logic structure arranged within a logic region. In the memory region, the first insulating layer may contact the second insulating layer and in the logic region, the semiconductor device may further include a stop layer arranged between the first insulating layer and the second insulating layer.Type: GrantFiled: September 10, 2020Date of Patent: August 29, 2023Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.Inventors: Benfu Lin, Yi Jiang, Lup San Leong, Juan Boon Tan
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Patent number: 11641789Abstract: According to various embodiments, there is provided a memory cell. The memory cell may include a transistor, a dielectric member, an electrode and a contact member. The dielectric member may be disposed over the transistor. The electrode may be disposed over the dielectric member. The contact member has a first end and a second end opposite to the first end. The first end is disposed towards the transistor, and the second end is disposed towards the dielectric member. The contact member has a side surface extending from the first end to the second end. The second end may have a recessed end surface that has a section that slopes towards the side surface so as to form a tip with the side surface at the second end. The dielectric member may be disposed over the second end of the contact member and may include at least a portion disposed over the tip.Type: GrantFiled: June 23, 2021Date of Patent: May 2, 2023Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.Inventors: Yi Jiang, Benfu Lin, Lup San Leong, Curtis Chun-I Hsieh, Wanbing Yi, Juan Boon Tan
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Publication number: 20220416160Abstract: According to various embodiments, there is provided a memory cell. The memory cell may include a transistor, a dielectric member, an electrode and a contact member. The dielectric member may be disposed over the transistor. The electrode may be disposed over the dielectric member. The contact member has a first end and a second end opposite to the first end. The first end is disposed towards the transistor, and the second end is disposed towards the dielectric member. The contact member has a side surface extending from the first end to the second end. The second end may have a recessed end surface that has a section that slopes towards the side surface so as to form a tip with the side surface at the second end. The dielectric member may be disposed over the second end of the contact member and may include at least a portion disposed over the tip.Type: ApplicationFiled: June 23, 2021Publication date: December 29, 2022Inventors: Yi JIANG, Benfu LIN, Lup San LEONG, Curtis Chun-I HSIEH, Wanbing YI, Juan Boon TAN
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Patent number: 11289649Abstract: Structures for a non-volatile memory element and methods of forming a structure for a non-volatile memory element. A switching layer is positioned over a first electrode, and a dielectric layer is positioned over the switching layer. The dielectric layer includes an opening extending to the switching layer. A second electrode includes a portion in the opening in the dielectric layer. The portion of the second electrode is in contact with a first portion of the switching layer. The switching layer further includes a second portion positioned between the dielectric layer and the first electrode.Type: GrantFiled: April 13, 2020Date of Patent: March 29, 2022Assignee: GlobalFoundries Singapore Pte. Ltd.Inventors: Lup San Leong, Curtis Chun-I Hsieh, Juan Boon Tan, Eng Huat Toh, Kin Wai Tang
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Publication number: 20220077234Abstract: A semiconductor device may be provided, including a first insulating layer; a second insulating layer arranged over the first insulating layer; a memory structure arranged within a memory region and including a resistance changing memory element within the first insulating layer; and a logic structure arranged within a logic region. In the memory region, the first insulating layer may contact the second insulating layer and in the logic region, the semiconductor device may further include a stop layer arranged between the first insulating layer and the second insulating layer.Type: ApplicationFiled: September 10, 2020Publication date: March 10, 2022Inventors: Benfu LIN, Yi JIANG, Lup San LEONG, Juan Boon TAN
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Publication number: 20210320249Abstract: Structures for a non-volatile memory element and methods of forming a structure for a non-volatile memory element. A switching layer is positioned over a first electrode, and a dielectric layer is positioned over the switching layer. The dielectric layer includes an opening extending to the switching layer. A second electrode includes a portion in the opening in the dielectric layer. The portion of the second electrode is in contact with a first portion of the switching layer. The switching layer further includes a second portion positioned between the dielectric layer and the first electrode.Type: ApplicationFiled: April 13, 2020Publication date: October 14, 2021Inventors: Lup San Leong, Curtis Chun-I Hsieh, Juan Boon Tan, Eng Huat Toh, Kin Wai Tang
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Patent number: 10475990Abstract: Methods of forming a pillar contact extension within a memory device using a self-aligned planarization process rather than direct ILD CMP and the resulting devices are provided. Embodiments include forming a photoresist layer over a low-K layer formed over an ILD having a first metal layer in a memory region and in a logic region and pillar-shaped conductors formed atop of the first metal layer only in the memory region; forming a trench through the photoresist layer over each pillar-shaped conductor; extending the trench through the low-K layer to an upper surface of each pillar-shaped conductor; forming a second metal layer over the low-K layer, filling the trench entirely; and planarizing the second metal layer until the second metal layer is removed from over the logic region, a pillar contact extension formed atop of each pillar-shaped conductor.Type: GrantFiled: January 22, 2018Date of Patent: November 12, 2019Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Curtis Chun-I Hsieh, Lup San Leong, Wanbing Yi, Cing Gie Lim, Yi Jiang, Juan Boon Tan
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Publication number: 20190229261Abstract: Methods of forming a pillar contact extension within a memory device using a self-aligned planarization process rather than direct ILD CMP and the resulting devices are provided. Embodiments include forming a photoresist layer over a low-K layer formed over an ILD having a first metal layer in a memory region and in a logic region and pillar-shaped conductors formed atop of the first metal layer only in the memory region; forming a trench through the photoresist layer over each pillar-shaped conductor; extending the trench through the low-K layer to an upper surface of each pillar-shaped conductor; forming a second metal layer over the low-K layer, filling the trench entirely; and planarizing the second metal layer until the second metal layer is removed from over the logic region, a pillar contact extension formed atop of each pillar-shaped conductor.Type: ApplicationFiled: January 22, 2018Publication date: July 25, 2019Inventors: Curtis Chun-I HSIEH, Lup San LEONG, Wanbing YI, Cing Gie LIM, Yi JIANG, Juan Boon TAN
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Patent number: 9437547Abstract: A device and methods for forming a device are disclosed. A substrate is provided and a TSV is formed in the substrate through a top surface of the substrate. The TSV and top surface of the substrate is lined with an insulation stack having a first insulation layer, a polish stop layer and a second insulation layer. A conductive layer is formed on the substrate. The TSV is filled with conductive material of the conductive layer. The substrate is planarized to remove excess conductive material of the conductive layer. The planarizing stops on the polish stop layer to form a planar top surface.Type: GrantFiled: March 8, 2016Date of Patent: September 6, 2016Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Benfu Lin, Hong Yu, Lup San Leong, Alex See, Wei Lu
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Publication number: 20160190066Abstract: A device and methods for forming a device are disclosed. A substrate is provided and a TSV is formed in the substrate through a top surface of the substrate. The TSV and top surface of the substrate is lined with an insulation stack having a first insulation layer, a polish stop layer and a second insulation layer. A conductive layer is formed on the substrate. The TSV is filled with conductive material of the conductive layer. The substrate is planarized to remove excess conductive material of the conductive layer. The planarizing stops on the polish stop layer to form a planar top surface.Type: ApplicationFiled: March 8, 2016Publication date: June 30, 2016Inventors: Benfu LIN, Hong YU, Lup San LEONG, Alex SEE, Wei LU
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Publication number: 20160114457Abstract: A polishing pad for use in chemical mechanical polishing of a substrate is disclosed. The polishing pad includes first and second major surfaces. The first major surface forms a polishing surface and is divided into a main portion and edge portions. The edge portions are nearer to edges of the polishing pad while the main portion is between the edge portions and farther from the edges of the polishing pad. The polishing pad also includes a plurality of polishing posts disposed on the first major surface of the pad. The densities of the polishing posts in the edge portions and main portion are different.Type: ApplicationFiled: October 24, 2014Publication date: April 28, 2016Inventors: Lup San LEONG, Cing Gie LIM, Wei LU, Ming ZENG, Alex SEE
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Patent number: 9287197Abstract: A device and methods for forming a device are disclosed. A substrate is provided and a TSV is formed in the substrate through a top surface of the substrate. The TSV and top surface of the substrate is lined with an insulation stack having a first insulation layer, a polish stop layer and a second insulation layer. A conductive layer is formed on the substrate. The TSV is filled with conductive material of the conductive layer. The substrate is planarized to remove excess conductive material of the conductive layer. The planarizing stops on the polish stop layer to form a planar top surface.Type: GrantFiled: March 15, 2013Date of Patent: March 15, 2016Assignee: Globalfoundries Singapore Pte. Ltd.Inventors: Benfu Lin, Hong Yu, Lup San Leong, Alex See, Wei Lu
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Patent number: 9230886Abstract: Semiconductor devices with through silicon vias (TSVs) are formed without copper contamination. Embodiments include exposing a passivation layer surrounding a bottom portion of a TSV in a silicon substrate, forming a silicon composite layer over the exposed passivation layer and over a bottom surface of the silicon substrate, forming a hardmask layer over the silicon composite layer and over the bottom surface of the silicon substrate, removing a section of the silicon composite layer around the bottom portion of the TSV using the hardmask layer as a mask, re-exposing the passivation layer, and removing the hardmask layer and the re-exposed passivation layer to expose a contact for the bottom portion of the TSV.Type: GrantFiled: December 18, 2014Date of Patent: January 5, 2016Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Lup San Leong, Zheng Zou, Alex Kai Hung See, Hai Cong, Xuesong Rao, Yun Ling Tan, Huang Liu
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Patent number: 9202746Abstract: Integrated circuits with reduced shorting and methods for fabricating such integrated circuits are provided. In an embodiment, a method for fabricating an integrated circuit includes depositing a gap fill dielectric overlying a semiconductor substrate. The gap fill dielectric is formed with an upper surface having a height differential. The method includes reducing the height differential of the upper surface of the gap fill dielectric. Further, the method includes depositing an interlayer dielectric overlying the gap fill dielectric. Also, the method forms an electrical contact to a selected location overlying the semiconductor substrate.Type: GrantFiled: December 31, 2013Date of Patent: December 1, 2015Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Lei Wang, Lup San Leong, Wei Lu, Alex See
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Patent number: 9076735Abstract: Methods for fabricating integrated circuits are disclosed. In an exemplary embodiment, a method for fabricating an integrated circuit includes forming a silicon material layer over a semiconductor substrate. The semiconductor substrate includes a logic device region and a memory array region. The memory array region has a memory device formed on the semiconductor substrate. The method further includes forming a capping layer over the silicon material layer and over the memory device and removing the capping layer from over the memory device in the memory array region using a first chemical mechanical polishing process while leaving at least a first portion of the capping layer in place over the logic device region. Further, the method includes removing the first the silicon material layer from over the memory device in the memory array region using a second chemical mechanical polishing process.Type: GrantFiled: November 27, 2013Date of Patent: July 7, 2015Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Lup San Leong, Alan Cing Gie Lim, Ling Wu, Jian Bo Yang
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Publication number: 20150187641Abstract: Integrated circuits with reduced shorting and methods for fabricating such integrated circuits are provided. In an embodiment, a method for fabricating an integrated circuit includes depositing a gap fill dielectric overlying a semiconductor substrate. The gap fill dielectric is formed with an upper surface having a height differential. The method includes reducing the height differential of the upper surface of the gap fill dielectric. Further, the method includes depositing an interlayer dielectric overlying the gap fill dielectric. Also, the method forms an electrical contact to a selected location overlying the semiconductor substrate.Type: ApplicationFiled: December 31, 2013Publication date: July 2, 2015Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.Inventors: Lei Wang, Lup San Leong, Wei Lu, Alex See
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Publication number: 20150147872Abstract: Methods for fabricating integrated circuits are disclosed. In an exemplary embodiment, a method for fabricating an integrated circuit includes forming a silicon material layer over a semiconductor substrate. The semiconductor substrate includes a logic device region and a memory array region. The memory array region has a memory device formed on the semiconductor substrate. The method further includes forming a capping layer over the silicon material layer and over the memory device and removing the capping layer from over the memory device in the memory array region using a first chemical mechanical polishing process while leaving at least a first portion of the capping layer in place over the logic device region. Further, the method includes removing the first the silicon material layer from over the memory device in the memory array region using a second chemical mechanical polishing process.Type: ApplicationFiled: November 27, 2013Publication date: May 28, 2015Inventors: Lup San Leong, Alan Cing Gie Lim, Ling Wu, Jian Bo Yang
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Publication number: 20150137359Abstract: Semiconductor devices with through silicon vias (TSVs) are formed without copper contamination. Embodiments include exposing a passivation layer surrounding a bottom portion of a TSV in a silicon substrate, forming a silicon composite layer over the exposed passivation layer and over a bottom surface of the silicon substrate, forming a hardmask layer over the silicon composite layer and over the bottom surface of the silicon substrate, removing a section of the silicon composite layer around the bottom portion of the TSV using the hardmask layer as a mask, re-exposing the passivation layer, and removing the hardmask layer and the re-exposed passivation layer to expose a contact for the bottom portion of the TSV.Type: ApplicationFiled: December 18, 2014Publication date: May 21, 2015Inventors: Lup San LEONG, Zheng ZOU, Alex Kai Hung SEE, Hai CONG, Xuesong RAO, Yun Ling TAN, Huang LIU
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Patent number: 8940637Abstract: Semiconductor devices with through silicon vias (TSVs) are formed without copper contamination. Embodiments include exposing a passivation layer surrounding a bottom portion of a TSV in a silicon substrate, forming a silicon composite layer over the exposed passivation layer and over a bottom surface of the silicon substrate, forming a hardmask layer over the silicon composite layer and over the bottom surface of the silicon substrate, removing a section of the silicon composite layer around the bottom portion of the TSV using the hardmask layer as a mask, re-exposing the passivation layer, and removing the hardmask layer and the re-exposed passivation layer to expose a contact for the bottom portion of the TSV.Type: GrantFiled: July 5, 2012Date of Patent: January 27, 2015Assignee: Globalfoundries Singapore Pte. Ltd.Inventors: Lup San Leong, Zheng Zou, Alex Kai Hung See, Hai Cong, Xuesong Rao, Yun Ling Tan, Huang Liu