发明授权
- 专利标题: Method of producing self-aligned mask in conjunction with blocking mask, articles produced by same and composition for same
- 专利标题(中): 生产自对准面罩的方法与阻隔面罩相同,制成的物品及其成分相同
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申请号: US10804552申请日: 2004-03-19
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公开(公告)号: US07517637B2公开(公告)日: 2009-04-14
- 发明人: Matthew E Colburn , Satyanarayana V Nitta , Sampath Purushothaman
- 申请人: Matthew E Colburn , Satyanarayana V Nitta , Sampath Purushothaman
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Ohlandt, Greeley, Ruggiero & Perle, L.L.P.
- 代理商 Daniel P. Morris, Esq.
- 主分类号: G03F7/00
- IPC分类号: G03F7/00
摘要:
A method of forming a self aligned pattern on an existing pattern on a substrate including applying a coating of a solution containing a masking material in a carrier, the masking material being either photo or thermally sensitive; performing a blanket exposure of the substrate; and allowing at least a portion of the masking material to preferentially develop in a fashion that replicates the existing pattern of the substrate. The existing pattern includes a first set of regions of the substrate having a first reflectivity and a second set of regions of the substrate having a second reflectivity different from the first composition. The first set of regions can include one or more metal elements and the second set of regions can include one or more dielectrics. Structures made in accordance with the method. A low resolution mask is used to block out regions over the substrate. Additionally, the resist can be applied over another masking layer that contains a separate pattern.
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