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    • 1. 发明授权
    • Method of aligning a semiconductor substrate with a base stage and
apparatus for doing the same
    • 将半导体衬底与基座对准的方法以及用于执行其的装置
    • US6034375A
    • 2000-03-07
    • US46037
    • 1998-03-23
    • Hiroshi Nozue
    • Hiroshi Nozue
    • H01L21/027G03F7/20H01J37/304
    • H01J37/3045H01J2237/31735
    • There is provided a method of aligning a semiconductor substrate with a base stage on which the semiconductor substrate is placed, in the process of forming a circuit pattern directly onto the semiconductor substrate with electron beams, the method including the steps of (a) scanning across an alignment mark formed on a surface of the semiconductor substrate with electron beams with a scanning angle, defined as an angle between a direction of the electron beams and a reference direction, being varied, (b) calculating a width of the alignment mark along a scanning direction for each of scanning angles, and (c) determining a minimum width among widths calculated in the step (b), and defining a scanning angle associated with the minimum width as an angular gap between the semiconductor substrate and the base stage. In accordance with the above-mentioned method, it is possible to align a semiconductor substrate with an X-Y stage with the less number of movements of the X-Y stage, which ensures a higher efficiency in exposing a semiconductor substrate to electron beams.
    • 提供了一种使用电子束将电路图案直接形成在半导体衬底上的过程中半导体衬底与其上放置有半导体衬底的基底台对准的方法,该方法包括以下步骤:(a)扫描 在半导体衬底的表面上形成有以电子束的方向和基准方向之间的角度定义为扫描角的电子束的对准标记变化,(b)计算对准标记沿着 扫描方向,以及(c)确定在步骤(b)中计算出的宽度中的最小宽度,并将与最小宽度相关联的扫描角度定义为半导体衬底和基底台之间的角度间隙。 根据上述方法,可以使半导体衬底与X-Y平台的移动次数较少的X-Y平台对齐,这确保了将半导体衬底暴露于电子束的更高的效率。
    • 2. 发明授权
    • Charged-beam exposure mask and charged-beam exposure method
    • 带电束曝光掩模和带电束曝光方法
    • US5968686A
    • 1999-10-19
    • US910424
    • 1997-08-13
    • Yasuhisa YamadaHiroshi Nozue
    • Yasuhisa YamadaHiroshi Nozue
    • H01L21/027G03F7/20H01J37/317G03F9/00
    • B82Y10/00B82Y40/00G03F1/20G03F7/2047H01J37/3174H01J2237/31788H01J2237/31794
    • An electron-beam exposure mask that is able to realize the required pattern transfer accuracy independent of the deflection distortion and aberration of an electron beam. This mask includes a substrate with a first area and a second area, a first plurality of cell apertures formed in the first area of the substrate, and a second plurality of cell apertures formed in the second area of the substrate. The first area of the substrate is designed so that a charged-beam irradiated to the first area has a deflection angle less than a reference angle. The second area of the substrate is designed so that a charged-beam irradiated to the second area has a deflection angle equal to or greater than the reference angle. Each of the first plurality of cell apertures corresponds to fine patterns necessitating high pattern transfer accuracy. Each of the second plurality of cell apertures corresponds to rough patterns unnecessitating the high pattern transfer accuracy.
    • 能够实现与电子束的偏转失真和像差无关的所需图案转印精度的电子束曝光掩模。 该掩模包括具有第一区域和第二区域的基板,形成在基板的第一区域中的第一多个单元孔,以及形成在基板的第二区域中的第二多个单元孔。 衬底的第一区域被设计成使得照射到第一区域的带电束具有小于参考角的偏转角。 衬底的第二区域被设计成使得照射到第二区域的带电束具有等于或大于参考角的偏转角。 第一多个单元孔径中的每一个对应于需要高图案转印精度的精细图案。 第二多个单元孔径中的每一个对应于不需要高图案转印精度的粗糙图案。
    • 3. 发明申请
    • PATTERN FORMING APPARATUS AND PATTERN FORMING METHOD
    • 图案形成装置和图案形成方法
    • US20100072403A1
    • 2010-03-25
    • US12547958
    • 2009-08-26
    • Takayuki ABERikio TOMIYOSHIHiroshi NOZUE
    • Takayuki ABERikio TOMIYOSHIHiroshi NOZUE
    • G21K5/10
    • H01J37/045B82Y10/00B82Y40/00H01J37/3026H01J37/3174H01J2237/0453
    • A pattern forming apparatus using lithography technique includes a stage configured to allow a target object to be placed thereon; a plurality of columns configured to form patterns on the target object by using a charged particle beam while moving relatively to the stage; a pattern forming rule setting unit configured to set a pattern forming rule depending on a position of broken one of the plurality of columns; a region setting unit configured to set regions so that unbroken ones of the plurality of columns respectively form a pattern in one of the regions; a plurality of control circuits each configured to control any one of the plurality of columns different from others of the plurality of columns controlled by others of the plurality of control circuits; and a pattern forming data processing unit configured to perform a converting process on pattern forming data for the regions set to output a corresponding data generated by the converting process to the control circuit of a corresponding one of the unbroken ones of the plurality of columns respectively.
    • 使用光刻技术的图案形成装置包括:被配置为允许将目标物体放置在其上的台; 多个列,被配置为通过在相对于所述载物台移动的同时使用带电粒子束在所述目标物体上形成图案; 图案形成规则设定单元,被配置为根据所述多个列中的断开的一个的位置来设置图案形成规则; 区域设定单元,被配置为设置区域,使得所述多个列中的不间断的列分别在所述区域之一中形成图案; 每个控制电路被配置为控制与多个控制电路中的其他控制电路控制的多个列中的其他列不同的多个列中的任一个; 以及图案形成数据处理单元,被配置为对所设置的区域的图案形成数据执行转换处理,以将分别对应的多个列中的不间断的相应数据的转换处理生成的相应数据输出到对应的一个。
    • 6. 发明授权
    • Electron beam aperture structure and method for fabricating the same
    • 电子束孔径结构及其制造方法
    • US5759722A
    • 1998-06-02
    • US585718
    • 1996-01-16
    • Hiroshi Nozue
    • Hiroshi Nozue
    • H01L21/306G03F1/20G03F1/68G03F7/20H01J37/09H01L21/027G03F9/00
    • G03F7/2047H01J37/09H01J2237/0453H01J2237/3175
    • The aperture structure is for cell projection writing of patterns on a semiconductor substrate by an electron beam. The aperture structure includes a wafer, and a plurality of aperture patterns formed in the wafer. The aperture patterns are positioned and structured such that a thermal coefficient of a front side of the wafer and that of a back side of the wafer are the same as each other. The aperture patterns are positioned in a central portion and are symmetrically shaped in the depth direction of the base. For fabricating the aperture structure, the front side of the wafer is etched, or the front side and the back side of the wafer are etched, and the aperture patterns are formed in the etched portion or portions. The back side of the wafer is etched to the same depth as the front side. The aperture structure does not become warped, and the accuracy of generating patterns on a wafer with electron beams is greatly enhanced.
    • 孔结构用于通过电子束在半导体衬底上的图案的单元投影写入。 孔结构包括晶片和形成在晶片中的多个孔径图案。 孔径图案被定位和构造使得晶片的前侧的热系数和晶片的背面的热系数彼此相同。 孔径图案位于中心部分并且在基部的深度方向上对称成形。 为了制造孔结构,蚀刻晶片的前侧,或蚀刻晶片的前侧和后侧,并且在蚀刻部分中形成孔径图案。 将晶片的背面蚀刻到与前侧相同的深度。 孔结构不会翘曲,并且大大提高了用电子束在晶片上产生图案的精度。
    • 10. 发明授权
    • Memory management and protection system for virtual memory in computer
system
    • 计算机系统虚拟内存的内存管理和保护系统
    • US5627987A
    • 1997-05-06
    • US21098
    • 1993-02-23
    • Hiroshi NozueMitsuo SaitoKenichi MaedaShigehiro AsanoToshio OkamotoShin SunghoHideo Segawa
    • Hiroshi NozueMitsuo SaitoKenichi MaedaShigehiro AsanoToshio OkamotoShin SunghoHideo Segawa
    • G06F12/10G06F12/14G06F12/00
    • G06F12/1458G06F12/109G06F12/1483G06F12/1491G06F2212/656
    • A memory management and protection system for realizing a high speed execution and a proper and flexible memory access control for multiple programs sharing an identical logical address space. In the system, the memory access is permitted according to a segment identifier identifying a segment in the logical address space, and a memory protection information for a region in each segment including a target right permission to indicate assigned rights to make a memory access from the region to each of the segments, and an execution permission to indicate a type of the memory access permitted by the right permission. Alternatively, a memory access can be permitted by using an access control list to be attached to each address table entry, which stores a plurality of program numbers identifying programs which are permitted to make accesses to the logical address stored in each address table entry, among which one that matches with the current program number is to be searched. Also, it is preferable to allocate a plurality of programs within a limit of available memory protection capacity to an identical logical address space, without any overlap between adjacently allocated address regions.
    • 一种用于实现高速执行的存储器管理和保护系统,以及用于共享相同逻辑地址空间的多个程序的适当且灵活的存储器访问控制。 在系统中,根据标识逻辑地址空间中的段的段标识符,允许存储器访问,以及每个区段中的区域的存储器保护信息,包括目标权限,以指示从存储器访问的指定的权限 区域,以及用于指示由权限许可允许的存储器访问的类型的执行许可。 或者,可以通过使用附加到每个地址表条目的访问控制列表来允许存储器访问,每个地址表条目存储多个程序号,标识被允许访问存储在每个地址表条目中的逻辑地址的程序, 将搜索与当前节目号匹配的那个。 此外,优选地,在可用存储器保护容量的限制内将多个程序分配给相同的逻辑地址空间,而不会在相邻分配的地址区域之间发生任何重叠。