KR20190130971A - 폐쇄 루프 척킹력 제어를 이용한 실시간 모니터링 - Google Patents
폐쇄 루프 척킹력 제어를 이용한 실시간 모니터링 Download PDFInfo
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- H10P72/7612—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using mechanical means, e.g. clamps or pinches the wafers being placed on a susceptor, stage or support characterised by lifting arrangements, e.g. lift pins
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Abstract
Description
[0009] 도 1은 기판 지지부가 내부에 설치되어 있는 예시적인 플라즈마 프로세싱 챔버의 개략적인 측면도이다.
[0010] 도 2는 배면 가스 스루 홀(through hole)에 센서 조립체가 탑재되어 있는 기판 지지부의 부분 단면 등각도이다.
[0011] 도 3은 리프트 핀에 센서 조립체가 탑재되어 있는 기판 지지부의 부분 단면 사시도이다.
[0012] 도 4는 센서 조립체를 위한 다양한 위치들을 예시하는, 기판 지지부의 상면 평면도들이다.
[0013] 도 5는 워크피스가 상부에 배치되어 있는 기판 지지부의 부분 단면도이다.
[0014] 도 6은 기판 지지부 상에 배치된 워크피스 상의 힘들을 최소화하기 위한 방법이다.
[0015] 도 7은 도 6의 방법에 대한 그림 표현이다.
[0016] 부가적인 특징들 및 이점들은 후속되는 상세한 설명에서 설명될 것이며, 부분적으로는, 그 설명으로부터 당업자에게 쉽게 자명하게 될 것이거나, 또는 후속되는 상세한 설명, 청구항들 뿐만 아니라 첨부 도면들을 포함하는 본원에서 설명되는 바와 같은 실시예들을 실시함으로써 인식될 것이다.
[0017] 전술한 일반적인 설명과 다음의 상세한 설명 둘 모두가 단지 예시적인 것일 뿐이고, 청구항들의 본질 및 특징을 이해하기 위한 개요 또는 프레임워크(framework)를 제공하도록 의도됨이 이해되어야 한다. 첨부 도면들은 추가적인 이해를 제공하기 위해 포함되고, 그리고 본 명세서의 일부로 통합되고 본 명세서의 일부를 구성한다. 도면들은 하나 이상의 실시예(들)를 예시하며, 설명과 함께, 다양한 실시예들의 원리들 및 동작을 설명하는 역할을 한다.
Claims (11)
- 플라즈마 프로세싱 챔버 내에서 정전 척 상에 배치된 워크피스(workpiece) 상의 척킹력(chucking force)들을 최소화하기 위한 방법으로서,
프로세싱 챔버에서 정전 척 상에 워크피스를 배치하는 단계;
상기 프로세싱 챔버 내에 플라즈마를 스트라이킹(strike)하는 단계;
상기 워크피스 상의 편향력(deflection force)을 모니터링하는 단계;
척킹 전압을 최소 값으로 인가하는 단계;
배면 가스 압력을 최소 압력으로 가하는 단계;
상기 편향력이 임계 값 미만이 되도록, 상기 척킹 전압 및/또는 배면 가스 압력을 조정하는 단계; 및
상기 척킹 전압과 상기 배면 가스 압력을 동시에 램핑 업(ramp up)하는 단계
를 포함하는,
워크피스 상의 척킹력들을 최소화하기 위한 방법. - 제1 항에 있어서,
디-척킹(de-chucking)을 위해 프로세스를 역으로 행하는 단계를 더 포함하는,
워크피스 상의 척킹력들을 최소화하기 위한 방법. - 제1 항에 있어서,
상기 척킹 전압의 힘의 최소 값은 상기 배면 가스 압력의 최소 값 미만인,
워크피스 상의 척킹력들을 최소화하기 위한 방법. - 제1 항에 있어서,
상기 배면 가스 압력의 값은, 상기 워크피스가 척킹될 때, 상기 척킹 전압의 힘의 값 미만인,
워크피스 상의 척킹력들을 최소화하기 위한 방법. - 제1 항에 있어서,
상기 편향력은 약 50 mTorr 내지 약 50 Torr인,
워크피스 상의 척킹력들을 최소화하기 위한 방법. - 제5 항에 있어서,
상기 편향력은 약 1 Torr 이하인,
워크피스 상의 척킹력들을 최소화하기 위한 방법. - 제1 항에 있어서,
상기 플라즈마의 스트라이킹과 상기 워크피스의 척킹 사이에 짧은 시간 지연을 도입하는 단계를 더 포함하는,
워크피스 상의 척킹력들을 최소화하기 위한 방법. - 제7 항에 있어서,
상기 짧은 시간 지연은 약 200 밀리초 내지 약 10 초인,
워크피스 상의 척킹력들을 최소화하기 위한 방법. - 제1 항에 있어서,
상기 척킹력 및 상기 배면 가스 압력의 폐쇄 루프 제어를 제공하는 단계; 및
상기 폐쇄 루프 제어에 대한 응답으로 상기 척킹력을 최소화하는 단계
를 더 포함하는,
워크피스 상의 척킹력들을 최소화하기 위한 방법. - 제1 항에 있어서,
클램핑력이 목표 총 클램핑력에 도달하고, 상기 목표 총 클램핑력으로 유지되도록, ESC로의 클램핑 전압을 조정하는 단계를 더 포함하는,
워크피스 상의 척킹력들을 최소화하기 위한 방법. - 제1 항에 있어서,
상기 척킹 전압을 최소 값으로 인가하는 단계는,
최소 힘을 달성하도록 상기 척킹 전압을 선택하는 단계를 더 포함하는,
워크피스 상의 척킹력들을 최소화하기 위한 방법.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762506313P | 2017-05-15 | 2017-05-15 | |
| US15/979,787 US10460916B2 (en) | 2017-05-15 | 2018-05-15 | Real time monitoring with closed loop chucking force control |
| US15/979,787 | 2018-05-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20190130971A true KR20190130971A (ko) | 2019-11-25 |
| KR102670418B1 KR102670418B1 (ko) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020190055863A Active KR102670418B1 (ko) | 2017-05-15 | 2019-05-13 | 폐쇄 루프 척킹력 제어를 이용한 실시간 모니터링 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10460916B2 (ko) |
| JP (1) | JP7362293B2 (ko) |
| KR (1) | KR102670418B1 (ko) |
| CN (1) | CN110491756B (ko) |
| TW (1) | TWI815889B (ko) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210127767A (ko) * | 2019-03-08 | 2021-10-22 | 어플라이드 머티어리얼스, 인코포레이티드 | 기판 프로세싱 챔버들을 위한 척킹 프로세스 및 시스템 |
| KR20230044208A (ko) * | 2020-08-05 | 2023-04-03 | 가부시키가이샤 호리바 에스텍 | 정전척 장치, 압력 산출 방법 및 프로그램 |
| KR20240031387A (ko) * | 2021-09-15 | 2024-03-07 | 장쑤 루벤 인스트루먼츠 컴퍼니 리미티드 | 이온빔 에칭기 및 그 하부전극 구조체 |
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| WO2017209901A2 (en) * | 2016-06-03 | 2017-12-07 | Applied Materials, Inc. | Substrate distance monitoring |
| US10510575B2 (en) | 2017-09-20 | 2019-12-17 | Applied Materials, Inc. | Substrate support with multiple embedded electrodes |
| US10732615B2 (en) * | 2017-10-30 | 2020-08-04 | Varian Semiconductor Equipment Associates, Inc. | System and method for minimizing backside workpiece damage |
| US10555412B2 (en) | 2018-05-10 | 2020-02-04 | Applied Materials, Inc. | Method of controlling ion energy distribution using a pulse generator with a current-return output stage |
| US11054317B2 (en) * | 2018-09-28 | 2021-07-06 | Applied Materials, Inc. | Method and apparatus for direct measurement of chucking force on an electrostatic chuck |
| US11476145B2 (en) | 2018-11-20 | 2022-10-18 | Applied Materials, Inc. | Automatic ESC bias compensation when using pulsed DC bias |
| US11373890B2 (en) * | 2018-12-17 | 2022-06-28 | Applied Materials, Inc. | Wireless in-situ real-time measurement of electrostatic chucking force in semiconductor wafer processing |
| CN118315254A (zh) | 2019-01-22 | 2024-07-09 | 应用材料公司 | 用于控制脉冲电压波形的反馈回路 |
| US11508554B2 (en) | 2019-01-24 | 2022-11-22 | Applied Materials, Inc. | High voltage filter assembly |
| CN112750726B (zh) * | 2019-10-30 | 2024-12-31 | 台湾积体电路制造股份有限公司 | 半导体制程系统以及处理半导体晶圆的方法 |
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| TW201947702A (zh) | 2019-12-16 |
| JP2019201207A (ja) | 2019-11-21 |
| US10460916B2 (en) | 2019-10-29 |
| CN110491756A (zh) | 2019-11-22 |
| KR102670418B1 (ko) | 2024-05-28 |
| CN110491756B (zh) | 2024-03-29 |
| TWI815889B (zh) | 2023-09-21 |
| JP7362293B2 (ja) | 2023-10-17 |
| US20180330926A1 (en) | 2018-11-15 |
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