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公开(公告)号:US20250096114A1
公开(公告)日:2025-03-20
申请号:US18469810
申请日:2023-09-19
Applicant: Intel Corporation
Inventor: Robin Chao , Chiao-Ti Huang , Guowei Xu , Ting-Hsiang Hung , Tao Chu , Feng Zhang , Chia-Ching Lin , Yang Zhang , Anand Murthy , Conor P. Puls
IPC: H01L23/522 , H01L23/528
Abstract: Techniques to form semiconductor devices can include one or more via structures having substrate taps. A semiconductor device includes a gate structure around or otherwise on a semiconductor region (or channel region). The gate structure may extend over the semiconductor regions of any number of devices along a given direction. The gate structure may be interrupted, for example, between two transistors with a via structure that extends through an entire thickness of the gate structure and includes a conductive core. The via structure has a conductive foot portion beneath the gate structure and a conductive arm portion extending from the conductive foot portion along a height of the gate structure. The conductive foot portion has a greater width along the given direction than any part of the conductive arm portion. The via structure may further include one or more dielectric layers between the conductive arm portion and the gate structure.
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公开(公告)号:US20250006734A1
公开(公告)日:2025-01-02
申请号:US18216493
申请日:2023-06-29
Applicant: Intel Corporation
Inventor: Tao Chu , Minwoo Jang , Yanbin Luo , Paul Packan , Guowei Xu , Chiao-Ti Huang , Robin Chao , Feng Zhang , Ting-Hsiang Hung , Chia-Ching Lin , Yang Zhang , Chung-Hsun Lin
IPC: H01L27/092 , H01L29/06 , H01L29/10 , H01L29/423 , H01L29/775 , H01L29/78
Abstract: An integrated circuit (IC) device includes a stripe of material perpendicular to, and spanning between, semiconductor structures with multiple widths, and the stripe is between transistors with channel regions of differing widths in the semiconductor structures. The material stripes cover transition portions between different widths of the semiconductor structures. The semiconductor structures may be channel structures of different types, including groups of fins or nanoribbons. Channel regions of differing widths may include more or fewer fins or narrower or wider nanoribbons. The channel regions may have alternating conductivity types, n- and p-type.
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公开(公告)号:US20240290788A1
公开(公告)日:2024-08-29
申请号:US18175591
申请日:2023-02-28
Applicant: Intel Corporation
Inventor: Guowei Xu , Tao Chu , Chiao-Ti Huang , Robin Chao , David Towner , Orb Acton , Omair Saadat , Feng Zhang , Dax M. Crum , Yang Zhang , Biswajeet Guha , Oleg Golonzka , Anand S. Murthy
IPC: H01L27/092 , H01L21/8238 , H01L29/06 , H01L29/423 , H01L29/778 , H01L29/786
CPC classification number: H01L27/0924 , H01L21/823807 , H01L29/0673 , H01L29/42392 , H01L29/778 , H01L29/78696
Abstract: A metal gate fabrication method for nanoribbon-based transistors and associated transistor arrangements, IC structures, and devices are disclosed. An example IC structure fabricated using metal gate fabrication method described herein may include a first stack of N-type nanoribbons, a second stack of P-type nanoribbons, a first gate region enclosing portions of the nanoribbons of the first stack and including an NWF material between adjacent nanoribbons of the first stack, and a second gate region enclosing portions of the nanoribbons of the second stack and including a PWF material between adjacent nanoribbons of the second stack, where the second gate region includes the PWF material at sidewalls of the nanoribbons of the second stack and further includes the NWF material so that the PWF material is between the sidewalls of the nanoribbons of the second stack and the NWF material.
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公开(公告)号:US20250140649A1
公开(公告)日:2025-05-01
申请号:US18498340
申请日:2023-10-31
Applicant: Intel corporation
Inventor: Feng Zhang , Tao Chu , Minwoo Jang , Yanbin Luo , Guowei Xu , Ting-Hsiang Hung , Chiao-Ti Huang , Robin Chao , Chia-Ching Lin , Yang Zhang , Kan Zhang
IPC: H01L23/48 , H01L27/092 , H01L29/06 , H01L29/778 , H01L29/786
Abstract: An IC device may include a semiconductor structure and a backside semiconductor structure over the semiconductor structure. The semiconductor structure and backside semiconductor structure may constitute the source or drain region of a transistor. The backside semiconductor structure may be closer to the backside of a substrate of the IC device than the semiconductor structure. The backside semiconductor structure may be formed at a lower temperature than the semiconductor structure. The backside semiconductor structure may have one or more different materials from the semiconductor structure. For instance, a semiconductor material in the backside semiconductor structure may have a different crystal direction from a semiconductor material in the semiconductor structure. As another example, the backside semiconductor structure may have one or more different chemical compounds from the semiconductor structure. The backside semiconductor structure may be over a backside via that can couple the backside semiconductor structure to a backside metal layer.
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公开(公告)号:US20250087530A1
公开(公告)日:2025-03-13
申请号:US18463436
申请日:2023-09-08
Applicant: Intel Corporation
Inventor: Chiao-Ti Huang , Tao Chu , Guowei Xu , Robin Chao , Feng Zhang , Yang Zhang , Ting-Hsiang Hung , Anand Murthy
IPC: H01L21/762 , H01L21/768 , H01L23/48 , H01L27/088 , H01L27/12
Abstract: Techniques are provided to form semiconductor devices where portions of the gate structure (e.g., foot structures) adjacent to the subfins have been removed. A semiconductor device includes a gate structure around or otherwise on a semiconductor region. The gate structure includes a gate dielectric and a gate electrode. The gate structure may be interrupted, for example, between two transistors with a gate cut that extends through an entire thickness of the gate structure and includes dielectric material to electrically isolate the portions of the gate structure on either side of the gate cut. The gate cut includes dielectric lobe structures that extend outwards from the sidewalls of the gate cut. The lobe structures effectively replace foot structures of the gate structure between the gate cut and subfin portions of the semiconductor fins. Removing the gate foot structures contributes to the reduction of the parasitic capacitance in the semiconductor device.
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公开(公告)号:US20250169130A1
公开(公告)日:2025-05-22
申请号:US18515626
申请日:2023-11-21
Applicant: Intel Corporation
Inventor: Tao Chu , Minwoo Jang , Yanbin Luo , Paul Packan , Guowei Xu , Chiao-Ti Huang , Robin Chao , Feng Zhang , Ting-Hsiang Hung , Chia-Ching Lin , Yang Zhang , Kan Zhang , Chung-Hsun Lin , Anand S. Murthy
IPC: H01L29/06 , H01L21/8234 , H01L27/088 , H01L29/423 , H01L29/66
Abstract: Fabrication methods for integrated circuit (IC) structures and devices with different nanoribbon thicknesses are disclosed. In one example, an IC structure includes a stack of nanoribbons stacked above one another over the support, including a first nanoribbon with a first channel region and a second nanoribbon with a second channel region, where the first channel region has a first thickness and the second channel region has a second thickness, and where the first thickness of the first channel region is different (e.g., greater) than the second thickness of the second channel region.
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公开(公告)号:US20250142948A1
公开(公告)日:2025-05-01
申请号:US18498318
申请日:2023-10-31
Applicant: Intel Corporation
Inventor: Robin Chao , Chiao-Ti Huang , Guowei Xu , Yang Zhang , Ting-Hsiang Hung , Tao Chu , Feng Zhang , Chia-Ching Lin , Anand S. Murthy , Conor P. Puls , Kan Zhang
IPC: H01L27/088 , H01L23/498 , H01L29/08 , H01L29/66 , H01L29/78
Abstract: An IC device with one or more transistors may also include one or more vias and jumpers for delivering power to the transistors. For instance, a via may be coupled to a power plane. A jumper may be connected to the via and an electrode of a transistor. With the via and jumper, an electrical connection is built between the power plane and the electrode. The via may be self-aligned. The IC device may include a dielectric structure at a first side of the via. A portion of the jumper may be at a second side of the via. The second side opposes the first side. The dielectric structure and the portion of the jumper may be over another dielectric structure that has a different dielectric material from the dielectric structure. The via may be insulated from another electrode of the transistor, which may be coupled to a ground plane.
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公开(公告)号:US20250107212A1
公开(公告)日:2025-03-27
申请号:US18471705
申请日:2023-09-21
Applicant: Intel Corporation
Inventor: Yang Zhang , Guowei Xu , Tao Chu , Robin Chao , Chiao-Ti Huang , Feng Zhang , Ting-Hsiang Hung , Chia-Ching Lin , Anand Murthy
IPC: H01L29/49 , H01L21/28 , H01L21/78 , H01L29/06 , H01L29/417 , H01L29/423 , H01L29/66 , H01L29/775
Abstract: Techniques are provided to form an integrated circuit having an airgap spacer between at least a transistor gate structure and an adjacent source or drain contact. In one such example, a FET (field effect transistor) includes a gate structure that extends around a fin or any number of nanowires (or nanoribbons or nanosheets, as the case may be) of semiconductor material. The semiconductor material may extend in a first direction between source and drain regions while the gate structure extends over the semiconductor material in a second direction. Airgaps are provided in the regions between the gate structures and the adjacent source/drain contacts. The airgaps have a low dielectric constant (e.g., around 1.0) to reduce the parasitic capacitance between the conductive structures.
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公开(公告)号:US20240321887A1
公开(公告)日:2024-09-26
申请号:US18187801
申请日:2023-03-22
Applicant: Intel Corporation
Inventor: Tao Chu , Yanbin Luo , Yusung Kim , Minwoo Jang , Paul Packan , Guowei Xu , Chiao-Ti Huang , Robin Chao , Feng Zhang , Yang Zhang , Zheng Guo
IPC: H01L27/092 , H01L29/49
CPC classification number: H01L27/0922 , H01L29/4966
Abstract: An IC device may have layout with reduced N-P boundary effect. The IC device may include two rows of transistors. The first row may include one or more P-type transistors. The second row may include N-type transistors. The gate electrode of a P-type transistor may include different conductive materials from the gate electrode of a N-type transistor. Each P-type transistor in the first row may be over a N-type transistor in the second row and contact the N-type transistor in the second row. For instance, the gate of the P-type transistor may contact the gate of the N-type transistor. Vacancy diffusion may occur at the boundary of the P-type transistor and the N-type transistor, causing N-P boundary effect. At least one or more other N-type transistors in the second row do not contact any P-type transistor, which can mitigate the N-P boundary effect in the IC device.
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公开(公告)号:US20250107156A1
公开(公告)日:2025-03-27
申请号:US18471710
申请日:2023-09-21
Applicant: Intel Corporation
Inventor: Chiao-Ti Huang , Robin Chao , Jaladhi Mehta , Tao Chu , Guowei Xu , Ting-Hsiang Hung , Feng Zhang , Yang Zhang , Chia-Ching Lin , Chung-Hsun Lin , Anand Murthy
IPC: H01L29/786 , H01L29/06 , H01L29/417 , H01L29/423 , H01L29/51 , H01L29/66
Abstract: Techniques are provided herein to form an integrated circuit having dielectric material formed in cavities beneath source or drain regions. The cavities may be formed within subfin portions of semiconductor devices. In one such example, a FET (field effect transistor) includes a gate structure extending around a fin or any number of nanowires of semiconductor material. The semiconductor material may extend in a first direction between source and drain regions while the gate structure extends over the semiconductor material in a second direction substantially orthogonal to the first direction. A dielectric fill may be formed in a recess beneath the source or drain regions, or a dielectric liner may be formed on sidewalls of the recess, to prevent epitaxial growth of the source or drain regions from the subfins. Removal of the semiconductor subfin from the backside may then be performed without causing damage to the source or drain regions.
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