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    • 32. 发明授权
    • Vacuum plasma processor apparatus and method
    • 真空等离子体处理装置及方法
    • US06531029B1
    • 2003-03-11
    • US09607326
    • 2000-06-30
    • Tuqiang NiKenji TakeshitaTom ChoiFrank Y. Lin
    • Tuqiang NiKenji TakeshitaTom ChoiFrank Y. Lin
    • H01L213065
    • H01J37/321
    • 200 mm and 300 mm wafers are processed in vacuum plasma processing chambers that are the same or have the same geometry. Substantially planar excitation coils having different geometries for the wafers of different sizes excite ionizable gas in the chamber to a plasma by supplying electromagnetic; fields to the plasma through a dielectric window at the top of the chamber. Both coils include plural symmetrical, substantially circular turns coaxial with a center point of the coil and at least one turn that is asymmetrical with respect to the coil center point. Both coils include four turns, with r.f. excitation being applied to the turn that is closest to the coil center point. The turn that is third farthest from the center point is asymmetric in the coil used for 200 mm wafers. The two turns closest to the coil center point are asymmetric in the coil used for 300 mm wafers.
    • 200mm和300mm晶片在相同或具有相同几何形状的真空等离子体处理室中进行处理。 对于不同尺寸的晶片,具有不同几何形状的基本上平面的激励线圈通过提供电磁而将腔室中的可电离气体激发到等离子体; 通过室顶部的电介质窗到等离子体的场。 两个线圈包括与线圈的中心点同轴的多个对称的基本圆形的匝和至少一个相对于线圈中心点不对称的匝。 两个线圈包括四圈,r.f. 激励被施加到最接近线圈中心点的转弯。 距离中心点第三远的转弯在用于200 mm晶圆的线圈中是不对称的。 在线圈中心点最近的两个转弯在用于300毫米晶圆的线圈中是不对称的。
    • 33. 发明授权
    • Method for improving uniformity and reducing etch rate variation of etching polysilicon
    • 改善蚀刻多晶硅的均匀性和降低蚀刻速率变化的方法
    • US06514378B1
    • 2003-02-04
    • US09540549
    • 2000-03-31
    • Tuqiang NiKenji TakeshitaTom ChoiFrank Y. LinWenli Collison
    • Tuqiang NiKenji TakeshitaTom ChoiFrank Y. LinWenli Collison
    • H05H100
    • H01J37/32642H01L21/32137
    • An apparatus and method for consecutively processing a series of semiconductor substrates with minimal plasma etch rate variation following cleaning with fluorine-containing gas and/or seasoning of the plasma etch chamber. The method includes steps of (a) placing a semiconductor substrate on a substrate support in a plasma etching chamber, (b) maintaining a vacuum in the chamber, (c) etching an exposed surface of the substrate by supplying an etching gas to the chamber and energizing the etching gas to form a plasma in the chamber, (d) removing the substrate from the chamber; and (e) consecutively etching additional substrates in the chamber by repeating steps (a-d), the etching step being carried out by minimizing a recombination rate of H and Br on a silicon carbide edge ring surrounding the substrate at a rate sufficient to offset a rate at which Br is consumed across the substrate. The method can be carried out using pure HBr or combination of HBr with other gases.
    • 一种用于在用含氟气体清洁和/或等离子体蚀刻室的调节之后以最小等离子体蚀刻速率变化连续处理一系列半导体衬底的装置和方法。 该方法包括以下步骤:(a)将半导体衬底放置在等离子体蚀刻室中的衬底支撑件上,(b)在室中保持真空,(c)通过向腔室中提供蚀刻气体来蚀刻衬底的暴露表面 并且激励蚀刻气体以在腔室中形成等离子体,(d)从腔室移除衬底; 并且(e)通过重复步骤(ad)连续地蚀刻腔室中的附加衬底,蚀刻步骤通过使围绕衬底的碳化硅边缘环上的H和Br的复合速率以足以抵消速率 其中Br在基底上被消耗。 该方法可以使用纯HBr或HBr与其他气体的组合进行。
    • 34. 发明授权
    • Laser beam scanning optical apparatus having means for generating moire
fringes
    • 具有用于产生莫尔条纹的装置的激光束扫描光学装置
    • US5856669A
    • 1999-01-05
    • US696066
    • 1996-08-13
    • Yasushi NagasakaKenji TakeshitaHiroshi HiraguchiJun KohsakaNobuo KanaiKeiji Ogoh
    • Yasushi NagasakaKenji TakeshitaHiroshi HiraguchiJun KohsakaNobuo KanaiKeiji Ogoh
    • B41J2/44B41J2/47G02B26/10G02B26/12G02B27/60
    • B41J2/471G02B26/128G02B27/60
    • A laser beam scanning optical apparatus which has Moire fringes generating elements which is located near a position optically equivalent to a scanning surface and modulates a laser beam emitted from a laser source to generate Moire fringes. The Moire fringes generating elements comprises, for example, a first filter which has spatial grating and a second filter which has spatial grating which slants slightly with respect to the spatial grating of the first filter, the first filter and the second filter being arranged upstream and downstream respectively in an optical path. The laser beam scanning optical apparatus further has a light receiving element for receiving the Moire fringes generated by the Moire fringes generating elements. Focusing means for correcting a position of an image point of the laser beam is driven in accordance with an output of the light receiving element. For example, the light receiving element is a photoelectric element with a plurality of light receiving surfaces, each of which generates an electric signal in accordance with the laser beam incident thereto, and from a phase difference between the electric signals, the position of the image point is detected.
    • 一种激光束扫描光学装置,其具有位于光学上等同于扫描表面的位置附近的莫尔条纹产生元件,并且调制从激光源发射的激光束以产生莫尔条纹。 莫尔条纹生成元件包括例如具有空间光栅的第一滤光器和具有相对于第一滤光器的空间光栅稍微倾斜的空间光栅的第二滤光器,第一滤光器和第二滤光器布置在上游, 分别在光路中。 激光束扫描光学装置还具有用于接收由莫尔条纹生成元件产生的莫尔条纹的光接收元件。 根据光接收元件的输出来驱动用于校正激光束的图像点的位置的聚焦装置。 例如,光接收元件是具有多个光接收表面的光电元件,每个光接收表面根据入射到其的激光束产生电信号,并且根据电信号之间的相位差,图像的位置 点检测。