公开(公告)号：US20240243011A1

公开(公告)日：2024-07-18

申请号：US18587477

申请日：2024-02-26

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Shih-Yao Lin ,  Kuei-Yu Kao ,  Chen-Ping Chen ,  Chih-Han Lin

IPC: H01L21/768 ,  H01L21/02 ,  H01L21/306 ,  H01L21/3065 ,  H01L21/8234 ,  H01L27/088

CPC classification number: H01L21/76831 ,  H01L21/30608 ,  H01L21/30655 ,  H01L21/823412 ,  H01L21/823431 ,  H01L27/0886 ,  H01L21/02236 ,  H01L21/02247 ,  H01L21/02381 ,  H01L21/0243 ,  H01L21/0245 ,  H01L21/02488 ,  H01L21/02507 ,  H01L21/02532 ,  H01L21/3065

Abstract: A method includes etching a semiconductor substrate to form a trench, with the semiconductor substrate having a sidewall facing the trench, and depositing a first semiconductor layer extending into the trench. The first semiconductor layer includes a first bottom portion at a bottom of the trench, and a first sidewall portion on the sidewall of the semiconductor substrate. The first sidewall portion is removed to reveal the sidewall of the semiconductor substrate. The method further includes depositing a second semiconductor layer extending into the trench, with the second semiconductor layer having a second bottom portion over the first bottom portion, and a second sidewall portion contacting the sidewall of the semiconductor substrate. The second sidewall portion is removed to reveal the sidewall of the semiconductor substrate.

公开(公告)号：US20230411483A1

公开(公告)日：2023-12-21

申请号：US18363968

申请日：2023-08-02

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Shih-Yao Lin ,  Chen-Ping Chen ,  Hsiaowen Lee ,  Chih-Han Lin

IPC: H01L29/423 ,  H01L21/02 ,  H01L21/285 ,  H01L21/8238 ,  H01L27/092 ,  H01L29/06 ,  H01L29/45 ,  H01L29/66 ,  H01L29/786

CPC classification number: H01L29/42392 ,  H01L29/78696 ,  H01L21/0259 ,  H01L21/28518 ,  H01L21/823807 ,  H01L21/823814 ,  H01L21/823864 ,  H01L21/823871 ,  H01L21/823878 ,  H01L27/092 ,  H01L29/0665 ,  H01L29/45 ,  H01L29/66545 ,  H01L29/66553 ,  H01L29/66742 ,  H01L29/78618 ,  H01L21/02532

Abstract: In an embodiment, a device includes: an isolation region; nanostructures protruding above a top surface of the isolation region; a gate structure wrapped around the nanostructures, the gate structure having a bottom surface contacting the isolation region, the bottom surface of the gate structure extending away from the nanostructures a first distance, the gate structure having a sidewall disposed a second distance from the nanostructures, the first distance less than or equal to the second distance; and a hybrid fin on the sidewall of the gate structure.

公开(公告)号：US20230326990A1

公开(公告)日：2023-10-12

申请号：US18334918

申请日：2023-06-14

Applicant: Taiwan Semiconductor Manufacturing Co. Ltd.

Inventor： Shih-Yao Lin ,  Chih-Chung Chiu ,  Kuei-Yu Kao ,  Chen-Ping Chen ,  Chih-Han Lin

IPC: H01L29/423 ,  H01L21/8234 ,  H01L29/66 ,  H01L29/10 ,  H01L21/02 ,  H01L21/3065 ,  H01L27/088 ,  H01L29/06

CPC classification number: H01L29/42392 ,  H01L21/823412 ,  H01L29/66795 ,  H01L29/1037 ,  H01L21/02532 ,  H01L21/3065 ,  H01L21/823437 ,  H01L21/823431 ,  H01L27/0886 ,  H01L29/0673 ,  H01L21/823462 ,  H01L27/088

Abstract: The disclosure is directed towards semiconductor devices and methods of manufacturing the semiconductor devices. The methods include forming fins in a device region and forming other fins in a multilayer stack of semiconductor materials in a multi-channel device region. A topmost nanostructure may be exposed in the multi-channel device region by removing a sacrificial layer from the top of the multilayer stack. Once removed, a stack of nanostructures are formed from the multilayer stack. A native oxide layer is formed to a first thickness over the topmost nanostructure and to a second thickness over the remaining nanostructures of the stack, the first thickness being greater than the second thickness. A gate dielectric is formed over the fins in the device region. A gate electrode is formed over the gate dielectric in the device region and surrounding the native oxide layer in the multi-channel device region.

公开(公告)号：US20220359722A1

公开(公告)日：2022-11-10

申请号：US17814779

申请日：2022-07-25

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Shih-Yao Lin ,  Kuei-Yu Kao ,  Chen-Ping Chen ,  Chih-Han Lin

IPC: H01L29/66 ,  H01L29/78 ,  H01L21/8234 ,  H01L21/311 ,  H01L29/06 ,  H01L21/027 ,  H01L29/423 ,  H01L29/51 ,  H01L29/10 ,  H01L27/088 ,  H01L21/762

Abstract: A method includes simultaneously forming a first dummy gate stack and a second dummy gate stack on a first portion and a second portion of a protruding fin, simultaneously removing a first gate electrode of the first dummy gate stack and a second gate electrode of the second dummy gate stack to form a first trench and a second trench, respectively, forming an etching mask, wherein the etching mask fills the first trench and the second trench, patterning the etching mask to remove the etching mask from the first trench, removing a first dummy gate dielectric of the first dummy gate stack, with the etching mask protecting a second dummy gate dielectric of the second dummy gate stack from being removed, and forming a first replacement gate stack and a second replacement gate stack in the first trench and the second trench, respectively.

公开(公告)号：US20220037498A1

公开(公告)日：2022-02-03

申请号：US17336599

申请日：2021-06-02

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Shih-Yao Lin ,  Chen-Ping Chen ,  Hsiaowen Lee ,  Chih-Han Lin

IPC: H01L29/423 ,  H01L27/092 ,  H01L29/06 ,  H01L29/45 ,  H01L29/786 ,  H01L21/02 ,  H01L21/285 ,  H01L29/66 ,  H01L21/8238

Abstract: In an embodiment, a device includes: an isolation region; nanostructures protruding above a top surface of the isolation region; a gate structure wrapped around the nanostructures, the gate structure having a bottom surface contacting the isolation region, the bottom surface of the gate structure extending away from the nanostructures a first distance, the gate structure having a sidewall disposed a second distance from the nanostructures, the first distance less than or equal to the second distance; and a hybrid fin on the sidewall of the gate structure.

公开(公告)号：US20210126110A1

公开(公告)日：2021-04-29

申请号：US16870429

申请日：2020-05-08

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Shih-Yao Lin ,  Kuei-Yu Kao ,  Chen-Ping Chen ,  Chih-Han Lin

IPC: H01L29/66 ,  H01L21/762 ,  H01L29/78 ,  H01L21/8234 ,  H01L21/311 ,  H01L29/06 ,  H01L21/027 ,  H01L29/423 ,  H01L29/51 ,  H01L29/10 ,  H01L27/088

Abstract: A method includes simultaneously forming a first dummy gate stack and a second dummy gate stack on a first portion and a second portion of a protruding fin, simultaneously removing a first gate electrode of the first dummy gate stack and a second gate electrode of the second dummy gate stack to form a first trench and a second trench, respectively, forming an etching mask, wherein the etching mask fills the first trench and the second trench, patterning the etching mask to remove the etching mask from the first trench, removing a first dummy gate dielectric of the first dummy gate stack, with the etching mask protecting a second gate dielectric of the first dummy gate stack from being removed, and forming a first replacement gate stack and a second replacement gate stack in the first trench and the second trench, respectively.

公开(公告)号：US11942363B2

公开(公告)日：2024-03-26

申请号：US17818608

申请日：2022-08-09

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Shih-Yao Lin ,  Kuei-Yu Kao ,  Chen-Ping Chen ,  Chih-Han Lin

IPC: H01L21/76 ,  H01L21/306 ,  H01L21/3065 ,  H01L21/768 ,  H01L21/8234 ,  H01L27/088 ,  H01L21/02

CPC classification number: H01L21/76831 ,  H01L21/30608 ,  H01L21/30655 ,  H01L21/823412 ,  H01L21/823431 ,  H01L27/0886 ,  H01L21/02236 ,  H01L21/02247 ,  H01L21/02381 ,  H01L21/0243 ,  H01L21/0245 ,  H01L21/02488 ,  H01L21/02507 ,  H01L21/02532 ,  H01L21/3065

Abstract: A method includes etching a semiconductor substrate to form a trench, with the semiconductor substrate having a sidewall facing the trench, and depositing a first semiconductor layer extending into the trench. The first semiconductor layer includes a first bottom portion at a bottom of the trench, and a first sidewall portion on the sidewall of the semiconductor substrate. The first sidewall portion is removed to reveal the sidewall of the semiconductor substrate. The method further includes depositing a second semiconductor layer extending into the trench, with the second semiconductor layer having a second bottom portion over the first bottom portion, and a second sidewall portion contacting the sidewall of the semiconductor substrate. The second sidewall portion is removed to reveal the sidewall of the semiconductor substrate.

公开(公告)号：US20220384263A1

公开(公告)日：2022-12-01

申请号：US17818608

申请日：2022-08-09

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Shih-Yao Lin ,  Kuei-Yu Kao ,  Chen-Ping Chen ,  Chih-Han Lin

IPC: H01L21/8234 ,  H01L27/088

Abstract: A method includes etching a semiconductor substrate to form a trench, with the semiconductor substrate having a sidewall facing the trench, and depositing a first semiconductor layer extending into the trench. The first semiconductor layer includes a first bottom portion at a bottom of the trench, and a first sidewall portion on the sidewall of the semiconductor substrate. The first sidewall portion is removed to reveal the sidewall of the semiconductor substrate. The method further includes depositing a second semiconductor layer extending into the trench, with the second semiconductor layer having a second bottom portion over the first bottom portion, and a second sidewall portion contacting the sidewall of the semiconductor substrate. The second sidewall portion is removed to reveal the sidewall of the semiconductor substrate.

公开(公告)号：US11264283B2

公开(公告)日：2022-03-01

申请号：US16888239

申请日：2020-05-29

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Shih-Yao Lin ,  Chih-Chung Chiu ,  Kuei-Yu Kao ,  Chen-Ping Chen ,  Chih-Han Lin

IPC: H01L21/8234 ,  H01L29/66 ,  H01L29/10 ,  H01L21/02 ,  H01L21/3065 ,  H01L27/088 ,  H01L29/06

Abstract: The disclosure is directed towards semiconductor devices and methods of manufacturing the semiconductor devices. The methods include forming fins in a device region and forming other fins in a multilayer stack of semiconductor materials in a multi-channel device region. A topmost nanostructure may be exposed in the multi-channel device region by removing a sacrificial layer from the top of the multilayer stack. Once removed, a stack of nanostructures are formed from the multilayer stack. A native oxide layer is formed to a first thickness over the topmost nanostructure and to a second thickness over the remaining nanostructures of the stack, the first thickness being greater than the second thickness. A gate dielectric is formed over the fins in the device region. A gate electrode is formed over the gate dielectric in the device region and surrounding the native oxide layer in the multi-channel device region.

公开(公告)号：US20210367058A1

公开(公告)日：2021-11-25

申请号：US17018793

申请日：2020-09-11

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Shih-Yao Lin ,  Kuei-Yu Kao ,  Chen-Ping Chen ,  Chih-Han Lin ,  Ming-Ching Chang ,  Chao-Cheng Chen

IPC: H01L29/66 ,  H01L29/78

Abstract: A method includes forming a dummy gate electrode on a semiconductor region, forming a first gate spacer on a sidewall of the dummy gate electrode, and removing an upper portion of the first gate spacer to form a recess, wherein a lower portion of the first gate spacer remains, filling the recess with a second gate spacer, removing the dummy gate electrode to form a trench, and forming a replacement gate electrode in the trench.