发明授权
- 专利标题: Mask for photolithography, method of forming thin film, liquid crystal display device, and method of producing the liquid crystal display device
- 专利标题(中): 光刻用掩模,薄膜形成方法,液晶显示装置以及液晶显示装置的制造方法
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申请号: US10953301申请日: 2004-09-29
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公开(公告)号: US07468239B2公开(公告)日: 2008-12-23
- 发明人: Masato Imai , Akira Maehara , Yoko Fukunaga
- 申请人: Masato Imai , Akira Maehara , Yoko Fukunaga
- 申请人地址: JP Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Rockey, Depke & Lyons, LLC
- 代理商 Robert J. Depke
- 优先权: JP2001-380338 20011213
- 主分类号: G03F7/20
- IPC分类号: G03F7/20
摘要:
A mask for photolithography in which a semi-transmission film is formed so that the phase difference of lights passing through a semi-transmission portion and a transmission portion of the mask for photolithography is between (−¼+2 m) π and (¼+2 m) π inclusive, where m is an integer. The invention makes it possible to efficiently and properly form a thin film having a multi-step structure by a single process.
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