- 专利标题: GATE OXIDE FORMING PROCESS
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申请号: US16667921申请日: 2019-10-30
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公开(公告)号: US20210134679A1公开(公告)日: 2021-05-06
- 发明人: Yuan-Cheng Yang , Yi-Han Su , Sheng-Chen Chung , Chen-An Kuo , Chun-Lin Chen , Chiu-Te Lee , Chih-Chung Wang
- 申请人: UNITED MICROELECTRONICS CORP.
- 申请人地址: TW Hsin-chu City
- 专利权人: UNITED MICROELECTRONICS CORP.
- 当前专利权人: UNITED MICROELECTRONICS CORP.
- 当前专利权人地址: TW Hsin-chu City
- 主分类号: H01L21/8234
- IPC分类号: H01L21/8234 ; H01L21/8249
摘要:
A gate oxide forming process includes the following steps. A substrate including a first area and a second area is provided. A first oxide layer, a silicon containing cap layer and a second oxide layer on the substrate of the first area and the second area are sequentially and blanketly formed. The silicon containing cap layer and the second oxide layer in the first area are removed. An oxidation process is performed to oxidize the silicon containing cap layer and a gate oxide layer is formed in the second area.
公开/授权文献
- US10985071B1 Gate oxide forming process 公开/授权日:2021-04-20
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