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    • 16. 发明授权
    • Method of producing semiconductor device
    • 半导体器件的制造方法
    • US5455205A
    • 1995-10-03
    • US34763
    • 1993-03-19
    • Hiroyuki UmimotoShin HashimotoShinji Odanaka
    • Hiroyuki UmimotoShin HashimotoShinji Odanaka
    • H01L21/3105H01L21/8242H01L27/105H01L27/108H01L21/02
    • H01L27/10852H01L21/3105H01L27/108H01L27/105Y10S148/133Y10S438/978
    • There is disclosed a method of producing a semiconductor memory device. An interlayer insulation film is formed on a semiconductor substrate including a switching transistor. Then, a memory node pattern reaching an active region of the switching transistor is formed. A cell plate electrode pattern is formed through an insulation film formed on the memory node in such a manner that a value obtained by subtracting a thickness of a polycrystalline silicon film for a cell plate electrode from an overlapping dimension of a memory node pattern and the cell plate electrode pattern is not less than two times larger and not more than ten times larger than a thickness of deposition of a BPSG film. Then, the BPSG film is deposited on an entire surface, and then is caused to viscously flow by a heat treatment. Then, an aluminum wiring is formed on the BPSG film. With this construction, a step of the aluminum wiring in a boundary region between a memory cell array portion and a peripheral circuit portion, or in a word line-backing contact forming region, is decreased, thereby preventing the lowering of the yield of the aluminum wiring which is caused by the cutting of the aluminum wiring and the remaining of a residue of etching for a contact-forming electrode (for example, tungsten).
    • 公开了一种制造半导体存储器件的方法。 在包括开关晶体管的半导体衬底上形成层间绝缘膜。 然后,形成到达开关晶体管的有源区的存储器节点图形。 通过形成在存储节点上的绝缘膜形成单元板电极图案,使得通过从存储器节点图案和单元的重叠尺寸减去用于单元板电极的多晶硅膜的厚度而获得的值 平板电极图案不小于BPSG膜的沉积厚度的两倍以上且不大于十倍。 然后,将BPSG膜沉积在整个表面上,然后通过热处理使其粘稠流动。 然后,在BPSG膜上形成铝布线。 利用这种结构,在存储单元阵列部分和外围电路部分之间或字线 - 背衬接触形成区域中的边界区域中的铝布线的步骤减小,从而防止铝的收率降低 通过切割铝布线引起的布线和剩余的用于接触形成电极(例如钨)的蚀刻残留物。
    • 18. 发明授权
    • Semiconductor device and method of fabricating the same
    • 半导体装置及其制造方法
    • US06921933B2
    • 2005-07-26
    • US10713221
    • 2003-11-17
    • Hiroyuki UmimotoShinji Odanaka
    • Hiroyuki UmimotoShinji Odanaka
    • H01L21/265H01L21/336H01L29/10H01L29/76
    • H01L29/6659H01L21/26513H01L29/1083H01L29/66492
    • A gate electrode is formed on a semiconductor substrate with agate insulating film interposed therebetween. A channel region composed of a first-conductivity-type semiconductor layer is formed in a region of a surface portion of the semiconductor substrate located below the gate electrode. Source/drain regions each composed of a second-conductivity-type impurity layer are formed in regions of the surface portion of the semiconductor substrate located on both sides of the gate electrode. Second-conductivity-type extension regions are formed between the channel region and respective upper portion of the source/drain regions in contact relation with the source/drain regions. First-conductivity-type pocket regions are formed between the channel region and respective lower portion of the source/drain regions in contact relation with the source/drain regions and in spaced relation to the gate insulating film.
    • 在半导体衬底上形成有栅电极,其间插有玛瑙绝缘膜。 在位于栅电极下方的半导体衬底的表面部分的区域中形成由第一导电型半导体层构成的沟道区。 在位于栅电极两侧的半导体衬底的表面部分的区域中形成各自由第二导电型杂质层构成的源/漏区。 第二导电型延伸区域形成在与源极/漏极区域接触的沟道区域和源极/漏极区域的相应上部之间。 第一导电型袋区域形成在沟道区域和与源极/漏极区域接触的源极/漏极区域的相应下部,并且与栅极绝缘膜间隔开。