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US Patent 12068318 Method of forming epitaxial features

Patent 12068318 was granted and assigned to Taiwan Semiconductor Manufacturing Company on August, 2024 by the United States Patent and Trademark Office.

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Is a
Patent
Patent
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Patent attributes

Patent Applicant
Taiwan Semiconductor Manufacturing Company
Taiwan Semiconductor Manufacturing Company
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Current Assignee
Taiwan Semiconductor Manufacturing Company
Taiwan Semiconductor Manufacturing Company
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
120683180
Patent Inventor Names
Bao-Ru Young0
Yung Feng Chang0
Tung-Heng Hsieh0
Ming-Yang Huang0
Date of Patent
August 20, 2024
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Patent Application Number
184461850
Date Filed
August 8, 2023
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Patent Citations
‌
US Patent 10157799 Multi-gate device and method of fabrication thereof
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US Patent 10199502 Structure of S/D contact and method of making same
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US Patent 10475902 Spacers for nanowire-based integrated circuit device and method of fabricating same
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US Patent 10290546 Threshold voltage adjustment for a gate-all-around semiconductor structure
0
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US Patent 9818872 Multi-gate device and method of fabrication thereof
0
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US Patent 9887269 Multi-gate device and method of fabrication thereof
0
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US Patent 9899398 Non-volatile memory device having nanocrystal floating gate and method of fabricating same
0
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US Patent 10032627 Method for forming stacked nanowire transistors
0
...
Patent Primary Examiner
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Christine A Enad
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CPC Code
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H01L 29/7851
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H01L 21/823468
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H01L 29/6656
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H01L 21/823418
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H01L 27/0886
0
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H01L 21/823431
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H01L 29/6681
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Patent abstract

Semiconductor structures and methods are provided. A method according to the present disclosure includes providing a workpiece that includes a plurality of active regions including channel regions and source/drain regions, and a plurality of dummy gate stacks intersecting the plurality of active regions at the channel regions, the plurality of dummy gate stacks including a device portion and a terminal end portion. The method further includes depositing a gate spacer layer over the workpiece, anisotropically etching the workpiece to recess the source/drain regions and to form a gate spacer from the gate spacer layer, forming a patterned photoresist layer over the workpiece to expose the device portion and the recessed source/drain regions while the terminal end portion is covered, and after the forming of the patterned photoresist layer, epitaxially forming source/drain features over the recessed source/drain regions.

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