发明授权
- 专利标题: Photosensitive bottom anti-reflective coatings
- 专利标题(中): 感光底部防反射涂层
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申请号: US10627792申请日: 2003-07-25
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公开(公告)号: US07108958B2公开(公告)日: 2006-09-19
- 发明人: Douglas J. Guerrero
- 申请人: Douglas J. Guerrero
- 申请人地址: US MO Rolla
- 专利权人: Brewer Science Inc.
- 当前专利权人: Brewer Science Inc.
- 当前专利权人地址: US MO Rolla
- 代理机构: Hovey Williams LLP
- 主分类号: G03F7/004
- IPC分类号: G03F7/004
摘要:
Anti-reflective compositions and methods of using these compositions to form circuits are provided. The compositions comprise a polymer dissolved or dispersed in a solvent system. Preferred polymers include polycarbonates, polysulfonyl esters, polycarbonate sulfones, and mixtures thereof. The compositions can be applied to a silicon wafer or other substrate to form a cured or hardened layer which is initially insoluble in typical photoresist developing solutions. Upon exposure to light, the cured or hardened layers become soluble in photoresist developing solutions so that the layer can be selectively removed along with the developed photoresist layer, thus eliminating the need for a separate removal step.
公开/授权文献
- US20040219456A1 Photosensitive bottom anti-reflective coatings 公开/授权日:2004-11-04
信息查询
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