Plural Gate Electrodes (e.g., Dual Gate, Etc.) Patents (Class 438/157)
  • Patent number: 12276839
    Abstract: A method of manufacturing a semiconductor structure comprising: depositing a first layer in contact with a first surface area of a substrate; depositing a second layer in contact with a second surface area of the substrate, the second surface area substantially co-planar with and outwards of the first surface area; depositing a third layer in contact with the first layer and the second layer; removing a portion of the third layer to expose a portion of the first layer; and removing at least a portion of the first layer to create a cavity between the substrate, the second layer and the third layer.
    Type: Grant
    Filed: April 14, 2022
    Date of Patent: April 15, 2025
    Assignee: SMART PHOTONICS HOLDING B.V.
    Inventor: Maria Johanna Helena Jochem
  • Patent number: 12243941
    Abstract: Horizontal gate-all-around devices and methods of manufacturing the same are described. The hGAA devices comprise an oxidize layer on a semiconductor material between source regions and drain regions of the device. The method includes radical plasma oxidation (RPO) of semiconductor material layers between source regions and drain regions of an electronic device.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: March 4, 2025
    Assignee: Applied Materials, Inc.
    Inventors: Myungsun Kim, Michael Stolfi, Benjamin Colombeau, Andy Lo
  • Patent number: 12191379
    Abstract: A method of manufacturing a semiconductor device includes forming a fin structure in which first semiconductor layers and second semiconductor layers are alternatively stacked, the first and second semiconductor layers having different material compositions; forming a sacrificial gate structure over the fin structure; forming a gate spacer on sidewalls of the sacrificial gate structure; etching a source/drain (S/D) region of the fin structure, which is not covered by the sacrificial gate structure and the gate spacer, thereby forming an S/D trench; laterally etching the first semiconductor layers through the S/D trench, thereby forming recesses; selectively depositing an insulating layer on surfaces of the first and second semiconductor layers exposed in the recesses and the S/D trench, but not on sidewalls of the gate spacer; and growing an S/D epitaxial feature in the S/D trench, thereby trapping air gaps in the recesses.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: January 7, 2025
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Bone-Fong Wu, Chih-Hao Yu, Chia-Pin Lin
  • Patent number: 12166041
    Abstract: In an embodiment, a device includes: a first fin extending from a substrate; a second fin extending from the substrate; a gate spacer over the first fin and the second fin; a gate dielectric having a first portion, a second portion, and a third portion, the first portion extending along a first sidewall of the first fin, the second portion extending along a second sidewall of the second fin, the third portion extending along a third sidewall of the gate spacer, the third portion and the first portion forming a first acute angle, the third portion and the second portion forming a second acute angle; and a gate electrode on the gate dielectric.
    Type: Grant
    Filed: July 31, 2023
    Date of Patent: December 10, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Shahaji B. More, Chandrashekhar Prakash Savant
  • Patent number: 12125842
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to vertically stacked diode-trigger silicon controlled rectifiers and methods of manufacture. The structure includes: a silicon controlled rectifier in a trap rich region of a semiconductor substrate; and at least one diode built in polysilicon (gate material) and isolated by a gate-dielectric.
    Type: Grant
    Filed: June 3, 2022
    Date of Patent: October 22, 2024
    Assignee: GLOBALFOUNDRIES U.S. Inc.
    Inventors: Anindya Nath, Souvick Mitra
  • Patent number: 12087639
    Abstract: A method of forming a semiconductor device includes forming a first fin and a second fin protruding above a substrate; forming isolation regions on opposing sides of the first fin and the second fin; forming a metal gate over the first fin and over the second fin, the metal gate being surrounded by a first dielectric layer; and forming a recess in the metal gate between the first fin and the second fin, where the recess extends from an upper surface of the metal gate distal the substrate into the metal gate, where the recess has an upper portion distal the substrate and a lower portion between the upper portion and the substrate, where the upper portion has a first width, and the lower portion has a second width larger than the first width, the first width and the second width measured along a longitudinal direction of the metal gate.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: September 10, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chih-Chang Hung, Chieh-Ning Feng, Chun-Liang Lai, Yih-Ann Lin, Ryan Chia-Jen Chen
  • Patent number: 12069862
    Abstract: A semiconductor die comprises a first set of semiconductor devices disposed at a first location of the semiconductor die and a second set of semiconductor devices disposed at a second location of the semiconductor die different from the first location. Each of the first set of semiconductor devices have a first workfunction to cause each of the first set of semiconductor devices to store memory for a first time period. Moreover, each of the second set of semiconductor devices have a second workfunction that is higher greater than the first workfunction to cause each of the second set of semiconductor devices to store memory for a second time period greater than the first time period.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: August 20, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Meng-Han Lin, Chia-En Huang
  • Patent number: 12057454
    Abstract: An active matrix substrate includes a plurality of source bus lines and a plurality of gate bus lines and a plurality of oxide semiconductor TFTs that have a plurality of pixel TFTs, each of which is associated with one of the plurality of pixel regions, and a plurality of circuit TFTs constituting a peripheral circuit, in which each of oxide semiconductor TFTs has an oxide semiconductor layer and a gate electrode disposed on a channel region of the oxide semiconductor layer via a gate insulating layer, the plurality of oxide semiconductor TFTs have a plurality of first TFTs, a plurality of second TFTs, and/or a plurality of third TFTs, and the plurality of first TFTs have the plurality of pixel TFTs, and the plurality of second TFTs and/or the plurality of third TFTs have at least a portion of the plurality of circuit TFTs.
    Type: Grant
    Filed: March 9, 2023
    Date of Patent: August 6, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kengo Hara, Tohru Daitoh, Tetsuo Kikuchi, Masahiko Suzuki, Setsuji Nishimiya, Hitoshi Takahata
  • Patent number: 12051702
    Abstract: A crystalline channel layer of a semiconductor material is formed in a backend process over a crystalline dielectric seed layer. A crystalline magnesium oxide MgO is formed over an amorphous inter-layer dielectric layer. The crystalline MgO provides physical link to the formation of a crystalline semiconductor layer thereover.
    Type: Grant
    Filed: February 10, 2023
    Date of Patent: July 30, 2024
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Matthias Passlack, Blandine Duriez, Georgios Vellianitis, Gerben Doornbos, Marcus Johannes Henricus Van Dal, Martin Christopher Holland, Mauricio Manfrini
  • Patent number: 12046676
    Abstract: A semiconductor device comprising a semiconductor channel, an epitaxial structure coupled to the semiconductor channel, and a gate structure electrically coupled to the semiconductor channel. The semiconductor device further comprises a first interconnect structure electrically coupled to the epitaxial structure and a dielectric layer that contains nitrogen. The dielectric layer comprises a first portion protruding from a nitrogen-containing dielectric capping layer that overlays either the gate structure or the first interconnect structure.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: July 23, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yu-Lien Huang, Yi-Shan Chen, Kuan-Da Huang, Han-Yu Lin, Li-Te Lin, Ming-Huan Tsai
  • Patent number: 12027625
    Abstract: A method includes providing a semiconductor structure including a first semiconductor substrate, an insulator layer over the first semiconductor substrate, and a second semiconductor substrate over the insulator layer; patterning the second semiconductor substrate to form a top fin portion over the insulator layer; conformally depositing a protection layer to cover the top fin portion, wherein a first portion of the protection layer is in contact with a top surface of the insulator layer; etching the protection layer to remove a second portion of the protection layer directly over the top fin portion while a third portion of the protection layer still covers a sidewall of the top fin portion; etching the insulator layer by using the third portion of the protection layer as an etch mask; and after etching the insulator layer, removing the third portion of the protection layer.
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: July 2, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Shu-Hao Kuo, Jung-Hao Chang, Chao-Hsien Huang, Li-Te Lin, Kuo-Cheng Ching
  • Patent number: 12027607
    Abstract: Electronic devices and methods of forming electronic devices with gate-all-around non-I/O devices and finlike structures for I/O devices are described. A plurality of dummy gates is etched to expose a fin comprising alternating layers of a first material and a second material. The second material layers are removed to create openings and the first material layers remaining are epitaxially grown to form a finlike structure.
    Type: Grant
    Filed: June 18, 2022
    Date of Patent: July 2, 2024
    Assignee: Applied Materials, Inc.
    Inventors: Benjamin Colombeau, Matthias Bauer, Naved Ahmed Siddiqui, Phillip Stout
  • Patent number: 12027621
    Abstract: Some embodiments include an integrated assembly having a first gate operatively adjacent a channel region, a first source/drain region on a first side of the channel region, and a second source/drain region on an opposing second side of the channel region. The first source/drain region is spaced from the channel region by an intervening region. The first and second source/drain regions are gatedly coupled to one another through the channel region. A second gate is adjacent a segment of the intervening region and is spaced from the first gate by an insulative region. A lightly-doped region extends across the intervening region and is under at least a portion of the first source/drain region. Some embodiments include methods of forming integrated assemblies.
    Type: Grant
    Filed: July 19, 2022
    Date of Patent: July 2, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Zia A. Shafi, Luca Laurin, Durga P. Panda, Sara Vigano'
  • Patent number: 12021154
    Abstract: A transistor includes a first gate structure, a channel layer, and source/drain contacts. The first gate structure includes metallic nanosheets and a gate dielectric layer wrapping around the metallic nanosheets. The channel layer wraps around a portion of the gate dielectric layer. The source/drain contacts are aside the metallic nanosheets. The source/drain contacts are electrically connected to the channel layer.
    Type: Grant
    Filed: February 8, 2023
    Date of Patent: June 25, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Marcus Johannes Henricus Van Dal
  • Patent number: 11990508
    Abstract: Semiconductor devices and methods of forming the same include recessing sacrificial layers in a stack of alternating sacrificial layers and channel layers using a first etch to form curved recesses at sidewalls of each sacrificial layer in the stack, with tails of sacrificial material being present at a top and bottom of each curved recess. Dielectric plugs are formed that each partially fill a respective curved recess, leaving exposed at least a portion of each tail of sacrificial material. The tails of sacrificial material are etched back using a second etch to expand the recesses. Inner spacers are formed in the expanded recesses.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: May 21, 2024
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Andrew M. Greene, Yao Yao, Ruilong Xie, Veeraraghavan S. Basker
  • Patent number: 11973144
    Abstract: A semiconductor device includes an isolation insulating layer disposed over a substrate, a semiconductor fin disposed over the substrate, an upper portion of the semiconductor fin protruding from the isolation insulating layer and a lower portion of the semiconductor fin being embedded in the isolation insulating layer, a gate structure disposed over the upper portion of the semiconductor fin and including a gate dielectric layer and a gate electrode layer, gate sidewall spacers disposed over opposing side faces of the gate structure, and a source/drain epitaxial layer. The upper portion of the semiconductor fin includes a first epitaxial growth enhancement layer made of a semiconductor material different from a remaining part of the semiconductor fin. The first epitaxial growth enhancement layer is in contact with the source/drain epitaxial layer. The gate dielectric layer covers the upper portion of the semiconductor fin including the first epitaxial growth enhancement layer.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: April 30, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chang-Yin Chen, Che-Cheng Chang, Chih-Han Lin
  • Patent number: 11948989
    Abstract: Semiconductor device and the manufacturing method thereof are disclosed herein. An exemplary semiconductor device comprises a substrate; semiconductor layers over the substrate, wherein the semiconductor layers are separate from each other and are stacked up along a direction generally perpendicular to a top surface of the substrate; a dielectric feature over and separate from the semiconductor layers; and a gate structure wrapping around each of the semiconductor layers, the gate structure having a gate dielectric layer and a gate electrode layer, wherein the gate dielectric layer interposes between the gate electrode layer and the dielectric feature and the dielectric feature is disposed over at least a part of the gate electrode layer.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: April 2, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Cheng-Ting Chung, Yi-Bo Liao, Hou-Yu Chen, Kuan-Lun Cheng
  • Patent number: 11942416
    Abstract: Embodiments disclosed herein include electronic systems with vias that include a horizontal and vertical portion in order to provide interconnects to stacked components, and methods of forming such systems. In an embodiment, an electronic system comprises a board, a package substrate electrically coupled to the board, and a die electrically coupled to the package substrate. In an embodiment the die comprises a stack of components, and a via adjacent to the stack of components, wherein the via comprises a vertical portion and a horizontal portion.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: March 26, 2024
    Assignee: Intel Corporation
    Inventors: Ehren Mannebach, Aaron Lilak, Hui Jae Yoo, Patrick Morrow, Anh Phan, Willy Rachmady, Cheng-Ying Huang, Gilbert Dewey, Rishabh Mehandru
  • Patent number: 11894423
    Abstract: Techniques are provided to fabricate semiconductor devices having a nanosheet field-effect transistor device disposed on a semiconductor substrate. The nanosheet field-effect transistor device includes a nanosheet stack structure including a semiconductor channel layer and a source/drain region in contact with an end portion of the semiconductor channel layer of the nanosheet stack structure. A trench formed in the source/drain region is filled with a metal-based material. The metal-based material filling the trench in the source/drain region mitigates the effect of source/drain material overfill on the contact resistance of the semiconductor device.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: February 6, 2024
    Assignee: International Business Machines Corporation
    Inventors: Heng Wu, Dechao Guo, Ruqiang Bao, Junli Wang, Lan Yu, Reinaldo Vega, Adra Carr
  • Patent number: 11888046
    Abstract: A fin structure on a substrate is disclosed. The fin structure can comprises a first epitaxial region and a second epitaxial region separated by a dielectric region, a merged epitaxial region on the first epitaxial region and the second epitaxial region, an epitaxial buffer region on a top surface of the merged epitaxial region, and an epitaxial capping region on the buffer epitaxial region and side surfaces of the merged epitaxial region.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: January 30, 2024
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Hsueh-Chang Sung, Kun-Mu Li
  • Patent number: 11869987
    Abstract: Gate-all-around integrated circuit structures including varactors are described. For example, an integrated circuit structure includes a varactor structure on a semiconductor substrate. The varactor structure includes a plurality of discrete vertical arrangements of horizontal nanowires. A plurality of gate stacks is over and surrounding corresponding ones of the plurality of discrete vertical arrangements of horizontal nanowires. The integrated circuit structure also includes a tap structure adjacent to the varactor structure on the semiconductor substrate. The tap structure includes a plurality of merged vertical arrangements of horizontal nanowires. A plurality of semiconductor structures is over and surrounding corresponding ones of the plurality of merged vertical arrangements of horizontal nanowires.
    Type: Grant
    Filed: July 7, 2022
    Date of Patent: January 9, 2024
    Assignee: Intel Corporation
    Inventors: Ayan Kar, Saurabh Morarka, Carlos Nieva-Lozano, Kalyan Kolluru, Biswajeet Guha, Chung-Hsun Lin, Brian Greene, Tahir Ghani
  • Patent number: 11862679
    Abstract: A semiconductor device including a substrate including an active pattern; a gate electrode crossing the active pattern; a source/drain pattern adjacent to one side of the gate electrode and on an upper portion of the active pattern; an active contact electrically connected to the source/drain pattern; and a silicide layer between the source/drain pattern and the active contact, the source/drain pattern including a body part including a plurality of semiconductor patterns; and a capping pattern on the body part, the body part has a first facet, a second facet on the first facet, and a corner edge defined where the first facet meets the second facet, the corner edge extending parallel to the substrate, the capping pattern covers the second facet of the body part and exposes the corner edge, and the silicide layer covers a top surface of the body part and a top surface of the capping pattern.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: January 2, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-Hee Choi, Seokhoon Kim, Choeun Lee, Edward Namkyu Cho, Seung Hun Lee
  • Patent number: 11855151
    Abstract: A semiconductor device includes a fin extending from a substrate. The fin has a source/drain region and a channel region. The channel region includes a first semiconductor layer and a second semiconductor layer disposed over the first semiconductor layer and vertically separated from the first semiconductor layer by a spacing area. A high-k dielectric layer at least partially wraps around the first semiconductor layer and the second semiconductor layer. A metal layer is formed along opposing sidewalls of the high-k dielectric layer. The metal layer includes a first material. The spacing area is free of the first material.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: December 26, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: I-Sheng Chen, Cheng-Hsien Wu, Chih Chieh Yeh, Yee-Chia Yeo
  • Patent number: 11837508
    Abstract: The present application relates to a semiconductor device and a manufacturing method thereof. The method includes: obtaining a substrate, a first device region, a second device region and a high-k gate dielectric layer film being formed on the substrate; forming, on the substrate, a barrier layer structure covering the high-k gate dielectric layer film at the second device region; forming a covering layer film including a first metal element on the substrate; and diffusing the first metal element in the covering layer film towards the high-k gate dielectric layer film at the first device region using an annealing process, the barrier layer structure preventing the first metal element from being diffused towards the high-k gate dielectric layer film at the second device region; wherein the first device region and the second device region have opposite conduction types.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: December 5, 2023
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventors: Jie Bai, Kang You
  • Patent number: 11830936
    Abstract: A structure and a method of forming are provided. A first work function layer is formed over a first fin and terminates closer to the first fin than an adjacent second fin. A second work function layer is formed over the first work function layer and terminates closer to the second fin than the adjacent second fin. A third work function layer is formed over the first work function layer and the second fin. A conductive layer is formed over the third work function layer.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: November 28, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Jin-Dah Chen, Stan Chen, Han-Wei Wu
  • Patent number: 11804487
    Abstract: A semiconductor device includes: a first fin and a second fin extending from a substrate and an epitaxial source/drain region. The epitaxial source/drain region includes a first portion grown on the first fin and a second portion grown on the second fin, and the first portion and the second portion are joined at a merging boundary. The epitaxial source/drain region further includes a first subregion extending from a location level with a highest point of the epitaxial source/drain region to a location level with a highest point of the merging boundary, a second subregion extending from the location level with the highest point of the merging boundary to a location level with a lowest point of the merging boundary, and a third subregion extending from the location level with the lowest point of the merging boundary to a location level with a top surface of an STI region.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: October 31, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Wei Hao Lu, Yi-Fang Pai, Cheng-Wen Cheng, Li-Li Su, Chien-I Kuo
  • Patent number: 11769813
    Abstract: Semiconductor devices include a first active pattern including a first lower pattern extending in a first direction and a first sheet pattern spaced apart from the first lower pattern; and a first gate electrode on the first lower pattern, the first gate electrode extending in a second direction different from the first direction and surrounding the first sheet pattern, wherein the first lower pattern includes a first sidewall and a second sidewall opposite to each other, each of the first sidewall of the first lower pattern and the second sidewall of the first lower pattern extends in the first direction, the first gate electrode overlaps the first sidewall of the first lower pattern in the second direction by a first depth, the first gate electrode overlaps the second sidewall of the first lower pattern in the second direction by a second depth, and the first depth is different from the second depth.
    Type: Grant
    Filed: October 14, 2022
    Date of Patent: September 26, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myung Gil Kang, Dong Won Kim, Woo Seok Park, Keun Hwi Cho, Sung Gi Hur
  • Patent number: 11757021
    Abstract: The present disclosure provide a method for using a hard mask layer on a top surface of fin structures to form a fin-top mask layer. The fin-top mask layer can function as an etch stop for subsequent processes. Using the fin-top hard mask layer allows a thinner conformal dielectric layer to be used to protect semiconductor fins during the subsequent process, such as during etching of sacrificial gate electrode layer. Using a thinner conformal dielectric layer can reduce the pitch of fins, particularly for input/output devices.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: September 12, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Yi-Ruei Jhan, Kuan-Ting Pan, Kuo-Cheng Chiang, Kuan-Lun Cheng, Chih-Hao Wang
  • Patent number: 11735634
    Abstract: A method for forming heterogeneous complementary FETs using a compact stacked nanosheet process is disclosed. The method comprises forming a first nanosheet stack comprising two layers of a first channel material separated by a second sacrificial layer, forming over the first nanosheet stack an equivalent second nanosheet stack, wherein the first channel material is complementary to the second channel material. The method comprises further forming a first source region and a first drain region, thereby building a first FET, and forming over the first source region and the first drain region a second source region and a second drain region, thereby building a second FET, removing selectively sacrificial layers, and forming a gate stack comprising a gate-all-around structure around all channels.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: August 22, 2023
    Assignee: International Business Machines Corporation
    Inventors: Cezar Bogdan Zota, Clarissa Convertino, Kirsten Emilie Moselund
  • Patent number: 11705517
    Abstract: A method of fabricating a semiconductor device is described. The method includes forming a nanosheet stack on a substrate, the nanosheet stack includes nanosheet channel layers. A gate is formed around the nanosheet channel layers of the nanosheet stack. A strained material is formed along a sidewall surface of the gate. The strained material is configured to create strain in the nanosheet channel layers of the nanosheet stack.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: July 18, 2023
    Assignee: International Business Machines Corporation
    Inventors: Xin Miao, Kangguo Cheng, Wenyu Xu, Chen Zhang
  • Patent number: 11690273
    Abstract: A photo transistor and a display device employing the photo transistor are provided. The photo transistor includes a gate electrode disposed on a substrate, a gate insulating layer that electrically insulates the gate electrode, a first active layer overlapping the gate electrode and including metal oxide, wherein the gate insulating layer is disposed between the gate electrode and the active layer, a second active layer disposed on the first active layer and including selenium, and a source electrode and a drain electrode respectively electrically connected to the second active layer.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: June 27, 2023
    Assignees: SAMSUNG DISPLAY CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Tae Sang Kim, Hyun Jae Kim, Hyuk Joon Yoo, Jun Hyung Lim
  • Patent number: 11682591
    Abstract: According to an aspect of the present inventive concept there is provided a method for forming a first and a second transistor structure, wherein the first and second transistor structures are spaced apart by an insulating wall, and the method comprising: forming on a semiconductor layer of the substrate a first semiconductor layer stack and a second semiconductor layer stack, each layer stack comprising in a bottom-up direction a sacrificial layer and a channel layer, wherein the layer stacks are spaced apart by a trench extending into the semiconductor layer substrate, the trench being filled with an insulating wall material to form the insulating wall; and processing the layer stacks to form the first and second transistor structures in the first and second device regions, respectively, the processing comprising forming source and drain regions and forming gate stacks; the method further comprising, prior to said processing: by etching removing the sacrificial layer of each layer stack to form a respect
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: June 20, 2023
    Assignee: IMEC Vzw
    Inventors: Boon Teik Chan, Juergen Boemmels, Basoene Briggs
  • Patent number: 11600721
    Abstract: Disclosed is a nitride semiconductor apparatus including a substrate, a first nitride semiconductor layer disposed above the substrate, and constituting an electron transit layer, a second nitride semiconductor layer formed on the first nitride semiconductor layer, and constituting an electron supply layer, a nitride semiconductor gate layer disposed on the second nitride semiconductor layer having a ridge portion at at least an area thereof, and containing an acceptor-type impurity, a gate electrode disposed on the ridge portion, a source electrode and a drain electrode disposed opposite to each other, with the ridge portion interposed therebetween, on the second nitride semiconductor layer, and a strip-shaped insulator disposed between the substrate and a surface layer portion of the first nitride semiconductor layer, and extending along a length direction of the ridge portion when viewed in plan.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: March 7, 2023
    Assignee: ROHM CO., LTD.
    Inventor: Hirotaka Otake
  • Patent number: 11569232
    Abstract: A method of manufacturing a semiconductor device having a self-aligned gate structure includes: providing at least one channel structure above at least one substrate; depositing at least one gate masking layer on the at least one channel structure so that the at least one gate masking layer is formed on top and side surfaces of the at least one channel structure and spread outward above the at least one substrate to form outer-extended portions of the at least one gate masking layer, before a gate-cut process is performed, wherein the at least one gate masking layer is self-aligned with respect to the at least one channel structure by the depositing; and removing the outer-extended portions of the at least one gate masking layer so that the at least one gate masking layer at both sides of the at least one channel structure has a same width.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: January 31, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byounghak Hong, Seunghyun Song, Hwichan Jun
  • Patent number: 11569233
    Abstract: Techniques and mechanisms for operating transistors that are in a stacked configuration. In an embodiment, an integrated circuit (IC) device includes transistors arranged along a line of direction which is orthogonal to a surface of a semiconductor substrate. A first epitaxial structure and a second epitaxial structure are coupled, respectively, to a first channel structure of a first transistor and a second channel structure of a second transistor. The first epitaxial structure and the second epitaxial structure are at different respective levels relative to the surface of the semiconductor substrate. A dielectric material is disposed between the first epitaxial structure and the second epitaxial structure to facilitate electrical insulation of the channels from each other. In another embodiment, the stacked transistors are coupled to provide a complementary metal-oxide-semiconductor (CMOS) inverter circuit.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: January 31, 2023
    Assignee: Intel Corporation
    Inventors: Ravi Pillarisetty, Willy Rachmady, Marko Radosavljevic, Van H. Le, Jack T. Kavalieros
  • Patent number: 11545490
    Abstract: A semiconductor structure is provided. The semiconductor structure includes a first gate-all-around FET over a substrate, and the first gate-all-around FET includes first nanostructures and a first gate stack surrounding the first nanostructures. The semiconductor structure also includes a first FinFET adjacent to the first gate-all-around FET, and the first FinFET includes a first fin structure and a second gate stack over the first fin structure. The semiconductor structure also includes a gate-cut feature interposing the first gate stack of the first gate-all-around FET and the second gate stack of the first FinFET.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: January 3, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Jin-Aun Ng, Yu-Chao Lin, Tung-Ying Lee
  • Patent number: 11515421
    Abstract: A semiconductor device including a substrate having a central region and a peripheral region; an integrated circuit structure on the central region; and a first structure on the peripheral region and surrounding the central region, wherein a portion of the first structure includes a first fin structure defined by a device isolation region in the substrate; a first dielectric layer covering an upper surface and side surfaces of the first fin structure and an upper surface of the device isolation region; a first gate structure on the first fin structure, the first gate structure including a first gate conductive layer, a first gate dielectric layer covering lower and side surfaces of the first gate conductive layer, and first gate spacer layers on side walls of the first gate conductive layer; and a first insulating structure covering the first dielectric layer and the first gate structure.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: November 29, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Junggun You, Joohee Jung, Jaehyeoung Ma, Namhyun Lee
  • Patent number: 11495688
    Abstract: Semiconductor devices and methods for forming the semiconductor devices include forming a sacrificial layer on a substrate on each side of a stack of nanosheets, the stack of nanosheets including first nanosheets and second nanosheets stacked in alternating fashion with a dummy gate structure formed thereon. Source and drain regions are grown on from the sacrificial layer and from ends of the second nanosheets to form source and drain regions in contact with each side of the stack of nanosheets. The sacrificial layer is removed. An interlevel dielectric is deposited around the source and drain regions to fill between the source and drain regions and the substrate.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: November 8, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Juntao Li, Peng Xu, Zhenxing Bi
  • Patent number: 11456385
    Abstract: A semiconductor device includes an oxide semiconductor layer, a source electrode and a drain electrode electrically connected to the oxide semiconductor layer, a gate insulating layer covering the oxide semiconductor layer, the source electrode, and the drain electrode, and a gate electrode over the gate insulating layer. The source electrode and the drain electrode include an oxide region formed by oxidizing a side surface thereof. Note that the oxide region of the source electrode and the drain electrode is preferably formed by plasma treatment with a high frequency power of 300 MHz to 300 GHz and a mixed gas of oxygen and argon.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: September 27, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama
  • Patent number: 11444083
    Abstract: A method of forming vertical fins on a substrate at the same time, the method including, forming a mask segment on a first region of the substrate while exposing the surface of a second region of the substrate, removing a portion of the substrate in the second region to form a recess, forming a fin layer in the recess, where the fin layer has a different material composition than the substrate, and forming at least one vertical fin on the first region of the substrate and at least one vertical fin on the second region of the substrate, where the vertical fin on the second region of the substrate includes a fin layer pillar formed from the fin layer and a substrate pillar.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: September 13, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Juntao Li, Peng Xu
  • Patent number: 11424347
    Abstract: Methods for improving profiles of channel regions in semiconductor devices and semiconductor devices formed by the same are disclosed. In an embodiment, a method includes forming a semiconductor fin over a semiconductor substrate, the semiconductor fin including germanium, a germanium concentration of a first portion of the semiconductor fin being greater than a germanium concentration of a second portion of the semiconductor fin, a first distance between the first portion and a major surface of the semiconductor substrate being less than a second distance between the second portion and the major surface of the semiconductor substrate; and trimming the semiconductor fin, the first portion of the semiconductor fin being trimmed at a greater rate than the second portion of the semiconductor fin.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: August 23, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Ssu-Yu Liao, Tsu-Hui Su, Chun-Hsiang Fan, Yu-Wen Wang, Ming-Hsi Yeh, Kuo-Bin Huang
  • Patent number: 11417775
    Abstract: Disclosed herein are transistor gate-channel arrangements that may be implemented in nanowire thin film transistors (TFTs) with textured semiconductors, and related methods and devices. An example transistor gate-channel arrangement may include a substrate, a channel material that includes a textured thin film semiconductor material shaped as a nanowire, a gate dielectric that at least partially wraps around the nanowire, and a gate electrode material that wraps around the gate dielectric. Implementing textured thin film semiconductor channel materials shaped as a nanowire and having a gate stack of a gate dielectric and a gate electrode material wrapping around the nanowire advantageously allows realizing gate all-around or bottom-gate transistor architectures for TFTs with textured semiconductor channel materials.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: August 16, 2022
    Assignee: Intel Corporation
    Inventors: Shriram Shivaraman, Van H. Le, Abhishek A. Sharma, Gilbert W. Dewey, Benjamin Chu-Kung, Miriam R. Reshotko, Jack T. Kavalieros, Tahir Ghani
  • Patent number: 11417781
    Abstract: Gate-all-around integrated circuit structures including varactors are described. For example, an integrated circuit structure includes a varactor structure on a semiconductor substrate. The varactor structure includes a plurality of discrete vertical arrangements of horizontal nanowires. A plurality of gate stacks is over and surrounding corresponding ones of the plurality of discrete vertical arrangements of horizontal nanowires. The integrated circuit structure also includes a tap structure adjacent to the varactor structure on the semiconductor substrate. The tap structure includes a plurality of merged vertical arrangements of horizontal nanowires. A plurality of semiconductor structures is over and surrounding corresponding ones of the plurality of merged vertical arrangements of horizontal nanowires.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: August 16, 2022
    Assignee: Intel Corporation
    Inventors: Ayan Kar, Saurabh Morarka, Carlos Nieva-Lozano, Kalyan Kolluru, Biswajeet Guha, Chung-Hsun Lin, Brian Greene, Tahir Ghani
  • Patent number: 11398482
    Abstract: A semiconductor device including a cap layer and a method for forming the same are disclosed. In an embodiment, a method includes epitaxially growing a first semiconductor layer over an N-well; etching the first semiconductor layer to form a first recess; epitaxially growing a second semiconductor layer filling the first recess; etching the second semiconductor layer, the first semiconductor layer, and the N-well to form a first fin; forming a shallow trench isolation region adjacent the first fin; and forming a cap layer over the first fin, the cap layer contacting the second semiconductor layer, forming the cap layer including performing a pre-clean process to remove a native oxide from exposed surfaces of the second semiconductor layer; performing a sublimation process to produce a first precursor; and performing a deposition process wherein material from the first precursor is deposited on the second semiconductor layer to form the cap layer.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: July 26, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chun-Chieh Wang, Yueh-Ching Pai, Huai-Tei Yang
  • Patent number: 11387148
    Abstract: A semiconductor device includes: a substrate having a first region and a second region; a first fin-shaped structure on the first region and a second fin-shaped structure on the second region, wherein each of the first fin-shaped structure and the second fin-shaped structure comprises a top portion and a bottom portion; a first doped layer around the bottom portion of the first fin-shaped structure; a second doped layer around the bottom portion of the second fin-shaped structure; a first liner on the first doped layer; and a second liner on the second doped layer.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: July 12, 2022
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Li-Wei Feng, Shih-Hung Tsai, Chao-Hung Lin, Hon-Huei Liu, Shih-Fang Hong, Jyh-Shyang Jenq
  • Patent number: 11380548
    Abstract: A method of manufacturing a semiconductor structure, comprising providing a substrate; forming a fin structure over the substrate; depositing an insulation material over the fin structure; performing a plurality of ion implantations in-situ with implantation energy increased or decreased stepwise; and removing at least a portion of the insulation material to expose a portion of the fin structure.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: July 5, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Chia-Chung Chen, Chung-Hao Chu, Chi-Feng Huang, Victor Chiang Liang
  • Patent number: 11335639
    Abstract: Methods and associated structures of forming a microelectronic device are described. Those methods may include forming a structure comprising a first contact metal disposed on a source/drain contact of a substrate, and a second contact metal disposed on a top surface of the first contact metal, wherein the second contact metal is disposed within an ILD disposed on a top surface of a metal gate disposed on the substrate.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: May 17, 2022
    Assignee: Intel Corporation
    Inventors: Bernhard Sell, Oleg Golonzka
  • Patent number: 11270891
    Abstract: The disclosure provides a method for making a self-aligned double pattern, A silicon substrate with a first oxide layer, an amorphous silicon layer and an organic layer, etching the organic layer and the amorphous silicon layer, and covering them with a first silicon nitride layer; remove the first silicon nitride layer in the amorphous silicon pattern, forming first silicon nitride sidewall patterns on the amorphous silicon pattern's sidewalls; removing the amorphous silicon pattern between the first silicon nitride sidewall patterns; defining the morphology of a fin field-effect transistor, form core patterns and covering them with a thin silicon nitride layer; depositing a second oxide layer; defining the fin field-effect transistor's height, and etching back the second oxide layer till the height of the core patterns satisfies the defined fin field-effect transistor height; removing the thin silicon nitride layer, depositing a third oxide layer to cover the core patterns.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: March 8, 2022
    Assignee: Shanghai Huali Integrated Circuit Corporation
    Inventors: Yenchan Chiu, Yingju Chen, Liyao Liu, Chanyuan Hu
  • Patent number: 11271110
    Abstract: Semiconductor devices and methods of fabricating the same are provided. The methods of fabricating the semiconductor devices may include providing a substrate including an active pattern protruding from the substrate, forming a first liner layer and a field isolating pattern on the substrate to cover a lower portion of the active pattern, forming a second liner layer on an upper portion of the active pattern and the field isolation pattern, and forming a dummy gate on the second liner layer.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: March 8, 2022
    Inventors: Tae-Jong Lee, Sanghyuk Hong, TaeYong Kwon, Sunjung Kim, Cheol Kim
  • Patent number: 11205702
    Abstract: A method for manufacturing a structure comprising a first substrate comprising at least one electronic component likely to be damaged by a temperature higher than 400° C. and a semiconductor layer extending on the first substrate comprises: (a) providing a first bonding metal layer on the first substrate, (b) providing a second substrate comprising successively: a semiconductor base substrate, a stack of a plurality of semiconductor epitaxial layers, a layer of SixGe1-x, with 0?x?1 being located at the surface of said stack opposite to the base substrate, and a second bonding metal layer, (c) bonding the first substrate and the second substrate through the first and second bonding metal layers at a temperature lower than or equal to 400° C., and (d) removing a part of the second substrate so as to transfer the layer of SixGe1-x on the first substrate using a selective etching process.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: December 21, 2021
    Assignee: Soitec
    Inventors: Christophe Figuet, Ludovic Ecarnot, Bich-Yen Nguyen, Walter Schwarzenbach, Daniel Delprat, Ionut Radu