会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明专利
    • DE69837232D1
    • 2007-04-19
    • DE69837232
    • 1998-05-06
    • CANON KK
    • HARA SHINICHI
    • G03F7/20H01L21/027H01L21/68
    • An exposure method is disclosed which includes the steps of transferring, by exposure, a pattern formed on an original to different shot regions on a substrate sequentially, and performing, during exposure of a certain shot, at least one of (i) adjusting relative positional relation between the original and the substrate, with respect to a direction effective to correct translation of a transfer region of the substrate due to thermal distortion thereof, and (ii) adjusting a transfer magnification of the pattern of the original to the substrate so as to correct enlargement of the transfer region due to thermal distortion of the substrate, wherein, in one preferred form, the adjustment is made in accordance with a correction table related to thermal expansion of the substrate during exposure and being prepared on the basis of one of calculation and preparatory exposure experiment, wherein, in another preferred form, the transfer magnification is adjusted by deforming the original, and wherein, in a further preferred form, the transfer magnification is adjusted by adjusting a projection optical system for projecting the pattern of the original to the substrate.
    • 9. 发明专利
    • DE68927364D1
    • 1996-11-28
    • DE68927364
    • 1989-08-31
    • CANON KK
    • SAKAMOTO EIJIHARA SHINICHISHIMODA ISAMUUZAWA SHUNICHI
    • G03F7/20H01L21/027H01L21/30H01L21/683H01L21/00
    • A wafer chuck (2) usable with a semiconductor exposure apparatus (Fig.2A) wherein a mask and a semiconductor wafer (1) are placed in a vacuum ambience or a pressure-reduced gas ambience, and wherein the wafer (1) is exposed through the mask to radiation energy such as X-rays contained in a synchrotron radiation beam, by which the pattern of the mask is transferred onto the wafer (1). The wafer (1) is first attracted on the wafer supporting surface of the chuck (2) by vacuum attraction (21), and thereafter, the wafer (1) is attracted by electrostatic attraction force. Thereafter, the vacuum attraction is broken by supplying (24) a gas. Preferably Helium or other thermally conductive gas is admitted at this point. When the pattern of the mask is transferred onto the wafer (1), the wafer (1) is retained on the wafer supporting surface (20) by the electrostatic attraction force only. By this, the wafer supporting apparatus can correctly contact the wafer supporting surface (20) to the wafer (1) without being influenced by the undulation of the wafer (1). In addition, the heat produced in the wafer (1) during exposure can be removed efficiently by temperature controlled (23) water (11) supplied to the wafer supporting apparatus (2).