发明授权
- 专利标题: Method for maskless lithography
- 专利标题(中): 无掩模光刻方法
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申请号: US231909申请日: 1999-01-14
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公开(公告)号: US6060224A公开(公告)日: 2000-05-09
- 发明人: William C. Sweatt , Richard H. Stulen
- 申请人: William C. Sweatt , Richard H. Stulen
- 专利权人: Sweatt; William C.,Stulen; Richard H.
- 当前专利权人: Sweatt; William C.,Stulen; Richard H.
- 主分类号: G02B26/08
- IPC分类号: G02B26/08 ; G03F7/20 ; G03C5/10
摘要:
The present invention provides a method for maskless lithography. A plurality of individually addressable and rotatable micromirrors together comprise a two-dimensional array of micromirrors. Each micromirror in the two-dimensional array can be envisioned as an individually addressable element in the picture that comprises the circuit pattern desired. As each micromirror is addressed it rotates so as to reflect light from a light source onto a portion of the photoresist coated wafer thereby forming a pixel within the circuit pattern. By electronically addressing a two-dimensional array of these micromirrors in the proper sequence a circuit pattern that is comprised of these individual pixels can be constructed on a microchip. The reflecting surface of the micromirror is configured in such a way as to overcome coherence and diffraction effects in order to produce circuit elements having straight sides.
公开/授权文献
- US5466119A Spacer of adjustable thickness 公开/授权日:1995-11-14
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