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    • 65. 发明授权
    • Method and apparatus for measuring thickness of metal layer
    • 用于测量金属层厚度的方法和装置
    • US07197426B2
    • 2007-03-27
    • US11191069
    • 2005-07-28
    • Jang-Ik ParkChung-Sam JunHwan-Shik Park
    • Jang-Ik ParkChung-Sam JunHwan-Shik Park
    • G01B11/28
    • G01B11/0666
    • In a method and apparatus for measuring a thickness of a metal layer formed on a semiconductor substrate first, second, and third light pulses are successively irradiated onto a top surface of the metal layer to generate respective first, second, and third second sonic waves in the metal layer. Interference between the first and second sonic waves alters a detected reflectivity of the third light pulse off the metal layer. Maximum interference of the sonic waves occurs where the first sonic wave travels to a bottom surface of the metal layer and back to the top surface in the same time that it takes for the second light pulse to arrive at the surface of the metal layer. Accordingly, the velocity of the first sonic wave and a time lag between the first and second light pulses are used to determine the thickness of the metal layer.
    • 在用于测量形成在半导体衬底上的金属层的厚度的方法和装置中,第一,第二和第三光脉冲被连续照射在金属层的顶表面上,以产生相应的第一,第二和第三声波 金属层。 第一和第二声波之间的干扰改变了第三光脉冲从金属层的检测反射率。 发生声波的最大干扰,其中第一声波在第二光脉冲到达金属层的表面所需的同一时间内移动到金属层的底表面并返回到顶表面。 因此,使用第一声波的速度和第一和第二光脉冲之间的时间滞后来确定金属层的厚度。
    • 66. 发明申请
    • Adsorption apparatus, semiconductor device manufacturing facility comprising the same, and method of recycling perfulorocompounds
    • 吸附装置,包括该吸附装置的半导体装置制造设备以及循环使用方法
    • US20070028771A1
    • 2007-02-08
    • US11498017
    • 2006-08-03
    • Ji-Young ShinChung-Sam JunKye-Weon Kim
    • Ji-Young ShinChung-Sam JunKye-Weon Kim
    • B01D53/02
    • B01D53/70B01D53/04B01D53/0454B01D2253/102B01D2253/104B01D2253/106B01D2253/108B01D2256/26B01D2257/2066B01D2258/0216B01D2259/40083B01D2259/402Y02C20/30
    • PFC is recycled from a gas mixture using adsorption technology and techniques. Two adsorption units each include an adsorbent having a selectivity by which the PFC is selectively adsorbed with respect to the other gas(es) that make up the mixture. The gas mixture is selectively supplied to one of the first and second adsorption units and a condition is created in the first adsorption unit so that the PFC is adsorbed in the first adsorption unit. Once the adsorbent is saturated in the first adsorption unit, a condition is created in the first adsorption unit that causes the PFC to be desorbed. At this time, the gas mixture is selectively supplied to the second adsorption unit, and a condition is created in the second adsorption unit so that the PFC is adsorbed. Once the adsorbent is saturated in the second adsorption unit, a condition is created in the second adsorption unit that causes the PFC to be desorbed. High-purity PFC gas can be obtained from the exhaust gas even if the gas mixture is exhaust gas of a semiconductor device manufacturing process having a low concentration of PFC.
    • 使用吸附技术和技术,从气体混合物回收PFC。 两个吸附单元各自包括具有选择性的吸附剂,通过该吸附剂相对于构成混合物的其它气体选择性地吸附PFC。 气体混合物被选择性地供应到第一和第二吸附单元之一,并且在第一吸附单元中产生条件,使得PFC吸附在第一吸附单元中。 一旦吸附剂在第一吸附单元中饱和,则在第一吸附单元中产生使PFC解吸的条件。 此时,将气体混合物选择性地供给到第二吸附单元,并且在第二吸附单元中产生条件以使PFC被吸附。 一旦吸附剂在第二吸附单元中饱和,则在引起PFC解吸的第二吸附单元中产生一个条件。 即使气体混合物是具有低浓度PFC的半导体器件制造方法的废气,也可以从废气中获得高纯度PFC气体。