KR20230018449A - 웨이퍼 반송 장치 및 웨이퍼 반송 방법 - Google Patents
웨이퍼 반송 장치 및 웨이퍼 반송 방법 Download PDFInfo
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- KR20230018449A KR20230018449A KR1020227045829A KR20227045829A KR20230018449A KR 20230018449 A KR20230018449 A KR 20230018449A KR 1020227045829 A KR1020227045829 A KR 1020227045829A KR 20227045829 A KR20227045829 A KR 20227045829A KR 20230018449 A KR20230018449 A KR 20230018449A
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Abstract
Description
도 2는 본 발명의 일 실시 형태인 웨이퍼 반송 장치의 구성을 나타내는 측면도이다.
도 3은 본 발명의 일 실시 형태인 웨이퍼 반송 로봇을 나타내는 단면도이다.
도 4는 본 발명의 일 실시 형태인 상하측 핑거를 나타내는 도면이다.
도 5는 본 발명의 일 실시 형태인 얼라이너를 나타내는 단면도이다.
도 6은 본 발명의 일 실시 형태인 핑거와 얼라이너의 위치를 나타내는 도면이다.
도 7은 본 발명의 일 실시 형태인 웨이퍼 반송 로봇의 웨이퍼 적재 동작을 나타내는 도면이다.
도 8은 본 발명의 일 실시 형태인 웨이퍼 반송 장치(1)의 제어계의 구성을 개략적으로 나타내는 블록도이다.
도 9는 종래의 웨이퍼 반송 로봇이 행하는 반송 동작을 나타내는 도면이다.
도 10은 본 발명의 일 실시 형태인 웨이퍼 반송 로봇이 행하는 반송 동작을 나타내는 도면이다.
도 11은 본 발명의 일 실시 형태인 웨이퍼 반송 로봇이 행하는 반송 동작을 나타내는 도면이다.
도 12는 본 발명의 일 실시 형태인 웨이퍼 반송 로봇이 행하는 퇴피 동작을 나타내는 도면이다.
도 13은 본 발명의 일 실시 형태인 제1 이동 기구를 구비하는 얼라이너를 나타내는 도면이다.
도 14는 본 발명의 일 실시 형태인 제1 이동 기구와 제2 이동 기구를 구비하는 얼라이너를 나타내는 도면이다.
도 15는 본 발명의 일 실시 형태인 클램프 핑거와 클램프 얼라이너를 나타내는 도면이다.
도 16은 본 발명의 일 실시 형태인 웨이퍼 반송 로봇이 행하는 반송 동작을 나타내는 도면이다.
Claims (12)
- 웨이퍼 받침대 상에 웨이퍼를 보유 지지하여, 상기 웨이퍼의 주연부를 검출하는 얼라이너와,
상기 웨이퍼를 보유 지지하여, 로드 포트, 상기 얼라이너 및 처리 장치 사이에서 반송하는 반송 로봇을 구비하는 웨이퍼 반송 장치이며,
상기 반송 로봇은,
각각의 암의 일단이 서로 회전 동작 가능하게 접속된 적어도 2개의 암을 구비하는 암체와,
상기 암체의 선단에 회동 가능하게 설치되어, 한 쌍의 웨이퍼 보유 지지간에 의해 상기 웨이퍼를 보유 지지하는 핑거와,
상기 암체를 동작시키는 암체 구동 기구와,
상기 핑거를 수평면 내에서 회전 구동시키는 핑거 구동 기구와,
상기 암체를 연직 방향으로 이동시키는 승강 기구를
구비하고,
상기 웨이퍼 받침대는, 브래킷에 의해 고정되어 수평으로 보유 지지된 얼라이너 본체부에 회전 가능하게 지지되어 있고,
상기 핑거가 액세스하는 영역에 있어서의 상기 얼라이너 본체부의 폭 방향의 치수는, 상기 한 쌍의 웨이퍼 보유 지지간의 이격 치수보다 작고,
상기 승강 기구에 의해, 상기 핑거를 하강시켜 상기 핑거로 보유 지지한 상기 웨이퍼를 상기 웨이퍼 받침대에 적재시킨 후, 상기 얼라이너의 본체부의 하방의 위치까지 상기 핑거를 더 하강시키고 나서, 상기 핑거를 다음 반송 동작으로 이행시키는 것을 특징으로 하는 웨이퍼 반송 장치. - 제1항에 있어서,
상기 한 쌍의 웨이퍼 보유 지지간의 상기 이격 치수와 상기 얼라이너 본체부의 상기 치수의 차는, 상기 웨이퍼의 허용 어긋남 치수보다 큰 것을 특징으로 하는, 웨이퍼 반송 장치. - 제1항 또는 제2항에 있어서,
상기 얼라이너는, 상기 얼라이너의 내부 공기를 외부로 배출하는 배기 수단을 구비하는 것을 특징으로 하는 웨이퍼 반송 장치. - 제1항 내지 제3항 중 어느 한 항에 있어서,
상기 웨이퍼 받침대는 상기 웨이퍼를 흡착 보유 지지하는 흡착식 웨이퍼 받침대이며, 상기 핑거는 상기 웨이퍼를 흡착 보유 지지하는 흡착식 핑거인 것을 특징으로 하는, 웨이퍼 반송 장치. - 제1항 내지 제3항 중 어느 한 항에 있어서,
상기 웨이퍼 받침대는 상기 웨이퍼의 주연부를 사이에 끼워서 지지하는 클램프식 웨이퍼 받침대이며, 상기 핑거는 상기 웨이퍼의 주연부를 사이에 끼워서 지지하는 클램프식 핑거인 것을 특징으로 하는, 웨이퍼 반송 장치. - 제4항에 있어서,
상기 흡착식 핑거에는 상기 웨이퍼를 흡착하기 위한 한 쌍의 웨이퍼 보유 지지 패드와 웨이퍼 접촉부가 배치되어 있고, 상기 흡착식 핑거에 의해 보유 지지되는 상기 웨이퍼의 중심은, 상면에서 보아 상기 한 쌍의 웨이퍼 보유 지지 패드와 상기 웨이퍼 접촉부를 잇는 삼각형 내에 배치되고, 상기 흡착식 핑거가 상기 흡착식 웨이퍼 받침대와의 사이에서 상기 웨이퍼를 주고받는 위치에 있을 때에는, 상기 흡착식 웨이퍼 받침대의 회전 중심축은, 상면에서 보아 상기 삼각형 내에 배치되는 것을 특징으로 하는 웨이퍼 반송 장치. - 제4항에 있어서,
상기 흡착식 얼라이너는, 상기 흡착식 웨이퍼 받침대를 수평면 내에서 이동시키는 이동 기구를 구비하는 것을 특징으로 하는, 웨이퍼 반송 장치. - 웨이퍼 받침대 상에 웨이퍼를 보유 지지하여, 해당 웨이퍼의 주연부를 검출하는 얼라이너와,
한 쌍의 웨이퍼 보유 지지간을 구비하는 핑거와 암체를 갖고 있고, 상기 웨이퍼를 상기 핑거 상에 보유 지지하여 로드 포트, 상기 얼라이너 및 처리 장치 사이에서 반송하는 웨이퍼 반송 로봇을 구비하고,
상기 얼라이너는, 브래킷에 의해 수평으로 보유 지지되어 상기 웨이퍼 받침대를 회전 가능하게 지지하는 얼라이너 본체부이며, 상기 핑거의 액세스 영역에 있어서 해당 얼라이너 본체부의 폭이 상기 한 쌍의 웨이퍼 보유 지지간의 이격 치수보다 작은 치수의 얼라이너 본체부를 갖는 웨이퍼 반송 장치에 있어서,
상기 웨이퍼 반송 로봇과 상기 얼라이너 사이에 있어서의 상기 웨이퍼 반송 로봇의 상기 웨이퍼의 반송 방법이며,
상기 핑거 상에 보유 지지한 상기 웨이퍼를, 상기 얼라이너의 상방으로부터 상기 핑거를 하강시킴으로써, 상기 웨이퍼를 상기 웨이퍼 받침대 상에 적재하는 적재 스텝과,
상기 웨이퍼 받침대 상에 상기 웨이퍼를 적재한 후에도, 상기 핑거를 하강시켜, 상기 핑거를 상기 얼라이너 본체부의 하방으로 퇴피시킨 후, 상기 핑거를 다음 반송 동작으로 이행시키는 퇴피 스텝을
구비하는 것을 특징으로 하는 웨이퍼 반송 로봇의 웨이퍼 반송 방법. - 제8항에 있어서,
상기 적재 스텝 후에, 상기 얼라이너가 상기 웨이퍼 받침대 상에 보유 지지하는 상기 웨이퍼의 주연부를 검출하여 상기 웨이퍼의 위치 어긋남을 검출하는 검출 스텝과,
상기 검출 스텝 후에, 상기 퇴피 스텝에 의해 퇴피하고 있던 상기 핑거를, 상기 웨이퍼 받침대보다 상방까지 상승시킴으로써 상기 웨이퍼 받침대 상에 적재되어 있던 상기 웨이퍼를 보유 지지하는 보유 지지 스텝을
더 갖는 것을 특징으로 하는 웨이퍼 반송 로봇의 웨이퍼 반송 방법. - 제9항에 있어서,
상기 얼라이너는, 상기 보유 지지 스텝 전에, 상기 얼라이너가 검출한 상기 웨이퍼의 회전 어긋남을 없애는 방향으로 상기 핑거를 수평 방향으로 이동시키는 회전 어긋남 보정 스텝을 더 갖는 것을 특징으로 하는 웨이퍼 반송 로봇의 웨이퍼 반송 방법. - 제9항 또는 제10항에 있어서,
상기 웨이퍼 반송 로봇은, 상기 보유 지지 스텝 전에, 상기 얼라이너가 검출한 상기 웨이퍼의 위치 어긋남을 없애는 방향으로 상기 핑거를 수평 방향으로 이동시키는 위치 어긋남 보정 스텝을 더 갖는 것을 특징으로 하는 웨이퍼 반송 로봇의 웨이퍼 반송 방법. - 제9항 또는 제10항에 있어서,
상기 얼라이너는, 상기 보유 지지 스텝 전에, 검출한 상기 웨이퍼의 위치 어긋남을 없애는 방향으로 상기 웨이퍼 받침대를 수평면 내에서 이동시키는 위치 어긋남 보정 스텝을 갖는 것을 특징으로 하는 웨이퍼 반송 방법.
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