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    • 11. 发明授权
    • Alignment and exposure apparatus
    • 对准和曝光设备
    • US4669867A
    • 1987-06-02
    • US701623
    • 1985-02-14
    • Koji UdaKazuyuki OdaNaoki Ayata
    • Koji UdaKazuyuki OdaNaoki Ayata
    • G03F9/00G03B27/42
    • G03F9/70
    • An alignment and exposure apparatus in which sequential operations of pattern projection for projecting a pattern of a first object, at a reduced ratio, onto a second object through an optical system, stepwise movement for moving the second object stepwise relative to the first object, detection for detecting any positional deviation between the first and second objects at a position at which the stepwise movement of the second object is terminated, and correction for correcting the positional relation between the first and second objects on the basis of the detected positional deviation, are repeated relative to the second object to thereby print the patterns onto the second object in a reduced scale. Upon correction of the positional relation between the first and second objects, at least one of the first and second objects is displaced in accordance with the magnitude of the detected positional deviation and/or, upon stepwise movement of the second object, the amount of stepwise movement to be made is corrected in accordance with the detected positional deviation with respect to the position at which the preceding stepwise movement of the second object is terminated. By this, the time required for repetitions of exposures is reduced.
    • 一种对准和曝光装置,其中用于通过光学系统将第一物体的图案以减小的比例投影到第二物体上的图案投影的顺序操作,用于相对于第一物体逐步移动第二物体的逐步移动,检测 用于检测在第二物体的逐步移动终止的位置处的第一和第二物体之间的任何位置偏差,并且基于检测到的位置偏差校正第一和第二物体之间的位置关系的校正被重复 从而以更小的比例将图案印刷到第二物体上。 在校正第一和第二物体之间的位置关系时,第一和第二物体中的至少一个根据检测到的位置偏差的大小而移位和/或在第二物体的逐步移动时, 根据检测到的相对于第二物体的先前逐步移动终止的位置的位置偏差来校正要进行的移动。 因此,减少重复曝光所需的时间。
    • 13. 发明授权
    • Light quantity controlling apparatus
    • 光量控制装置
    • US5459573A
    • 1995-10-17
    • US291747
    • 1994-08-17
    • Naoto AbeKoji UdaIsamu ShimodaShunichi UzawaNoriyuki Nose
    • Naoto AbeKoji UdaIsamu ShimodaShunichi UzawaNoriyuki Nose
    • G01B11/00G01D5/26G03F9/00H01L21/68H01L31/12H01L33/00H01S5/06H01S5/062H01S5/0683G01N21/86
    • G03F9/7088G03F9/7049H01L21/68H01L21/682H01S5/06835H01S5/06216
    • A position detecting apparatus usable for aligning mask and a semiconductor wafer, wherein a laser beam produced by a semiconductor laser is projected through a predetermined optical system to alignment marks formed on the mask and the wafer, and the light reflected by the marks are detected by an accumulation type sensor to produce an electrical signal, from which the relative positional relation between the mask and the wafer are detected on the basis of the electrical signal. To obtain proper mark signals, the quantity of light incident on the accumulation sensor is controlled. In this apparatus, the beam emitting strength of the semiconductor laser is made constant, and the control of thee amount of light incident on the accumulation sensor is effected by controlling the operation period of the semiconductor laser. In addition, the actuation timing of the semiconductor laser is advanced from the accumulation start of the accumulation type sensor by the time required for the semiconductor laser to be thermally stabilized after its actuation. The mark detection signal produced by the accumulation sensor is precise.
    • 一种可用于对准掩模和半导体晶片的位置检测装置,其中由半导体激光器产生的激光束通过预定的光学系统投射到形成在掩模和晶片上的对准标记,并且由标记反射的光被 用于产生电信号的累积型传感器,根据电信号检测掩模和晶片之间的相对位置关系。 为了获得适当的标记信号,控制入射在累积传感器上的光量。 在该装置中,半导体激光器的发射光强度保持恒定,并且通过控制半导体激光器的工作周期来控制入射到积聚传感器上的光量。 此外,半导体激光器的激活定时从累积型传感器的累积开始到半导体激光器在其致动之后被热稳定所需的时间前进。 由积累传感器产生的标记检测信号是精确的。