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    • 2. 发明授权
    • Method of etching a semiconductor device by an ion beam
    • 通过离子束蚀刻半导体器件的方法
    • US5086015A
    • 1992-02-04
    • US394364
    • 1989-08-15
    • Fumikazu ItohAkira ShimaseSatoshi HaraichiTakahiko TakahashiMikio Hongo
    • Fumikazu ItohAkira ShimaseSatoshi HaraichiTakahiko TakahashiMikio Hongo
    • H01L21/302H01L21/3065H01L21/3205H01L21/768
    • H01L21/76802Y10S148/046
    • A method of etching a semiconductor device having multi-layered wiring by an ion beam is disclosed which method comprises the steps of: extracting a high-intensity ion beam from a high-density ion source; focusing the extracted ion beam; causing the focused ion beam to perform a scanning operation by a voltage applied to a deflection electrode; forming a first hole in the semiconductor device by the focused ion beam to a depth capable of reaching an insulating film formed between upper and lower wiring conductors so that the first hole has a curved bottom corresponding to the undulation of the upper wiring conductor, and the upper wiring conductor is absent at the bottom of the first hole; and scanning a portion of the bottom of the first hole with the focused ion beam to form a second hole in the insulating film to a depth capable of reaching the lower wiring conductor, thereby preventing the shorting between the upper and lower wiring conductors. Further, a method of forming a hole of a predetermined shape at a surface area having a step-like portion of a semiconductor device by an ion beam is disclosed which method comprises a pre-etching step of scanning the high-level region of the step-like portion with the ion beam so that the high-level region becomes equal in level to the low-level region of the step-like portion, and a main step of scanning the whole of the surface area with the ion beam till the hole of the predetermined shape is formed in the semiconductor device.
    • 公开了一种通过离子束蚀刻具有多层布线的半导体器件的方法,该方法包括以下步骤:从高密度离子源提取高强度离子束; 聚焦提取的离子束; 使聚焦离子束通过施加到偏转电极的电压进行扫描操作; 通过所述聚焦离子束在所述半导体器件中形成第一孔至能够到达形成在上部和下部布线导体之间的绝缘膜的深度,使得所述第一孔具有对应于所述上部布线导体的起伏的弯曲底部,并且 上部布线导体在第一个孔的底部不存在; 并用聚焦离子束扫描第一孔的底部的一部分,以在绝缘膜中形成能够到达下布线导体的深度的第二孔,从而防止上布线导体和下布线导体之间的短路。 此外,公开了一种通过离子束在具有半导体器件的阶梯状部分的表面区域形成预定形状的孔的方法,该方法包括:扫描步骤的高级区域的预蚀刻步骤 具有离子束的部分,使得高级区域变得与阶梯状部分的低级区域相等,并且主要步骤是用离子束扫描整个表面积直到孔 在半导体器件中形成预定形状。
    • 3. 发明授权
    • Method of providing a semiconductor IC device with an additional
conduction path
    • 提供具有附加传导路径的半导体IC器件的方法
    • US5026664A
    • 1991-06-25
    • US334145
    • 1989-04-06
    • Mikio HongoKatsuro MizukoshiShuzo SanoTakashi KamimuraFumikazu ItohAkira ShimaseSatoshi HaraichiTakahiko Takahashi
    • Mikio HongoKatsuro MizukoshiShuzo SanoTakashi KamimuraFumikazu ItohAkira ShimaseSatoshi HaraichiTakahiko Takahashi
    • H01L21/3205H01L21/768H01L23/52
    • H01L21/76838H01L21/32051H01L21/76892Y10S148/093
    • A semiconductor IC device having a substrate, a patterned conductor layer for interconnection of regions in the substrate and a passivation layer covering the device is provided with an additional conduction path of a pattern and/or part of the patterned conductor layer is removed for disconnection for the purpose of evaluation of the characteristics of the device. The additional conduction path is formed by forming a hole in the passivation layer to expose a part of the conductor layer, directing, in an atmosphere containing a metal compound gas, an ion beam onto the hole and onto a predetermined portion of the passivation layer on which the additional conduction path of a pattern is to be formed to thereby form a patterned film of the metal decomposed from the metal compound gas and forming an additional conductor on the patterned film. The provision of the additional conduction path and/or the removal of part of the patterned conductor layer is preformed in a chemical vapor deposition apparatus which includes a vacuum chamber and an ion beam radiation unit having a housing partitioned into, for example, first, second and third compartments. The ion beam radiation unit has an ion source placed in the first compartment, an ion beam focusing and deflecting device placed in the second compartment and pressure buffer constituted by the third compartment. The third compartment is coupled to and pneumatically isolated from the vacuum chamber for conducting an ion beam emitted from the ion source, passing the second compartment and ejected from the second compartment to the vacuum chamber.
    • 具有衬底,用于衬底中的区域的互连的图案化导体层和覆盖该器件的钝化层的半导体IC器件被设置有去除图案和/或图案化导体层的一部分的附加传导路径用于断开 评估设备特点的目的。 附加传导路径是通过在钝化层中形成一个孔而露出导体层的一部分而形成的,该导体层的一部分在包含金属化合物气体的气氛中引导离子束到孔上并延伸到钝化层的预定部分上 其形成图案的附加传导路径,从而形成从金属化合物气体分解的金属的图案化膜,并在图案化膜上形成附加导体。 提供额外的传导路径和/或去除图案化的导体层的一部分在化学气相沉积设备中预先形成,该化学气相沉积设备包括真空室和离子束辐射单元,该单元具有被分隔成例如第一,第二 和第三个隔间。 离子束辐射单元具有放置在第一隔室中的离子源,放置在第二隔室中的离子束聚焦和偏转装置以及由第三隔间构成的压力缓冲器。 第三隔室与真空室联接并气动隔离,用于传导从离子源发射的离子束,通过第二隔室并从第二隔室喷射到真空室。
    • 10. 发明授权
    • Multilayered device micro etching method and system
    • 多层器件微蚀刻法和系统
    • US5055696A
    • 1991-10-08
    • US391304
    • 1989-08-08
    • Satoshi HaraichiFumikazu ItohAkira ShimaseTakahiko Takahashi
    • Satoshi HaraichiFumikazu ItohAkira ShimaseTakahiko Takahashi
    • H01L21/302H01J37/304H01J37/305H01L21/3065
    • H01J37/304H01J37/228H01J37/3005H01J37/3056H01J2237/006H01J2237/0805H01J2237/0807H01L21/76892
    • In locally reactive etching by irradiating to a multilayered workpiece reactive beam generated by extracting the reactant gas ionized or by irradiating such focussing beam as ion beam, electron beam or laser beam to the multilayered workpiece in an atmosphere of reactant gas; each layer of a multilayered device comprising a plurality of layers formed on a substrate can be accurately and quickly eteched by detecting the change of the material of the layer currently being etched and after detecting the change of material, switching reactant gas to be ionized or atmospheric reactant gas to one complying with the material of the layer currently being etched. This multilayered device micro etching method can be readily put into practice by a multilayered device micro etching system further comprising means for detecting the change of the material of layer to be etched and means for switching and supplying a plurality of reactant gases, in a micro etching appratus for performing locally rective etching.
    • 在局部反应蚀刻中,通过照射到通过提取离子化的反应物气体产生的多层工件反应性束,或者通过在反应气体的气氛中将这样的聚焦束作为离子束,电子束或激光束照射到多层工件; 通过检测当前被蚀刻的层的材料的变化,并且在检测到材料的变化,切换待离子化或大气的反应气体之后,可以精确而快速地将包含形成在基板上的多层的多层器件的每个层 反应气体与符合当前蚀刻层的材料一致。 这种多层器件微蚀刻方法可以通过多层器件微蚀刻系统容易地实施,该多层器件微蚀刻系统还包括用于在微蚀刻中检测被蚀刻层的材料的变化和用于切换和供应多个反应气体的装置的装置 用于进行局部矫正蚀刻。