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    • 3. 发明授权
    • Semiconductor device and method of manufacturing the same
    • 半导体装置及其制造方法
    • US06828648B2
    • 2004-12-07
    • US10655122
    • 2003-09-04
    • Naoki KoidoRiichiro ShirotaHirohisa Iizuka
    • Naoki KoidoRiichiro ShirotaHirohisa Iizuka
    • H01L2900
    • H01L27/11521H01L27/115
    • In a method of manufacturing a semiconductor device of STI structure, a semiconductor structure in which an insulating material layer is formed on a conductive layer which becomes a gate electrode, is prepared. Etching is conducted to the semiconductor structure to form a trench extending from the insulating material layer into the semiconductor substrate in accordance with a pattern of a resist film (not shown) covering an element region. Then, the insulating material layer is backed off by wet etching or the like and the gate electrode is processed while using the insulating material layer as a mask. As a result, it is possible to make the gate electrode smaller in size than the element region and to form a trench upper portion to be wider than the trench lower portion in the depth direction of the trench, thereby providing a good shape of the insulator embedded in the trench by depositing the insulator.
    • 在制造STI结构的半导体器件的方法中,准备了在形成栅电极的导电层上形成绝缘材料层的半导体结构。 根据覆盖元件区域的抗蚀剂膜(未示出)的图案,对半导体结构进行蚀刻以形成从绝缘材料层延伸到半导体衬底中的沟槽。 然后,通过湿式蚀刻等使绝缘材料层退回,并且在使用绝缘材料层作为掩模的同时对栅电极进行加工。 结果,可以使栅电极的尺寸小于元件区域,并且在沟槽的深度方向上形成比沟槽下部更宽的沟槽上部,从而提供绝缘体的良好形状 通过沉积绝缘体嵌入在沟槽中。
    • 6. 发明授权
    • Nonvolatile semiconductor storage device and its manufacturing method
    • 非易失性半导体存储器件及其制造方法
    • US06288942B1
    • 2001-09-11
    • US09632626
    • 2000-08-04
    • Hirohisa IizukaShinji SatohRiichiro Shirota
    • Hirohisa IizukaShinji SatohRiichiro Shirota
    • G11C1604
    • H01L27/11521H01L27/115H01L27/11524
    • High-concentrated impurity regions 24 for isolation of bit line contacts, having the same conduction type as that of a semiconductor substrate 10, are formed in the semiconductor substrate 10 under field oxide films 12 in locations between individual drain regions of selection transistors provided in a plurality of NAND memory cells, respectively. The high-concentrated impurity regions 24 for isolation of bit line contacts are made in a common step of making high-concentrated impurity regions 26 for isolation of memory transistors, by implanting impurities into the semiconductor substrate 10 through slits 20a, 20b made in a first conductive film 20. The high-concentrated impurity regions 24 prevent the punch-through phenomenon between bit line contacts 42a, and improve the resistivity to voltage between the bit line contacts 42a.
    • 用于隔离具有与半导体衬底10相同的导电类型的位线接触的高浓度杂质区24形成在半导体衬底10中的场氧化物膜12下的位于选择晶体管的各漏极区之间的位置 多个NAND存储器单元。 用于隔离位线触点的高浓度杂质区24是通过将杂质注入到半导体衬底10中的狭缝20a,20b以第一个方式制造的共同步骤制成用于隔离存储晶体管的高浓度杂质区26 高浓度杂质区24防止位线触点42a之间的穿通现象,并提高位线触点42a之间的电压电阻率。
    • 7. 发明授权
    • Method of fabricating semiconductor device
    • 制造半导体器件的方法
    • US07297599B2
    • 2007-11-20
    • US11219752
    • 2005-09-07
    • Norio OhtaniHirohisa IizukaHiroaki HazamaKazuhito NaritaEiji Kamiya
    • Norio OhtaniHirohisa IizukaHiroaki HazamaKazuhito NaritaEiji Kamiya
    • H01L21/8234
    • H01L27/115H01L27/11519H01L27/11526H01L27/11529
    • A method of fabricating a semiconductor device includes forming on a semiconductor substrate a gate electrode with a gate insulating film being interposed between the substrate and the electrode, forming an insulating film for element isolation protruding from a surface of the semiconductor substrate, forming an oxide film on the surface of the semiconductor substrate with the gate electrode and the element isolation insulating film having been formed, removing the oxide film in a region in which a self-aligned contact hole is to be formed while using a resist pattern for removing the oxide film formed in a region in which the self-aligned contact hole is formed, and etching a part of the element isolation insulating film protruding from the surface of the semiconductor substrate so that said part is substantially on a level with the surface of the semiconductor substrate, while using the resist pattern for removing the oxide film formed in the region in which the self-aligned contact hole is formed.
    • 一种制造半导体器件的方法包括在半导体衬底上形成栅电极,栅极绝缘膜插入在衬底和电极之间,形成用于元件隔离的绝缘膜,从半导体衬底的表面突出,形成氧化膜 在已经形成有栅电极和元件隔离绝缘膜的半导体衬底的表面上,在使用用于去除氧化膜的抗蚀剂图案的同时,在要形成自对准接触孔的区域中除去氧化膜 形成在其中形成自对准接触孔的区域中,并且蚀刻从半导体衬底的表面突出的元件隔离绝缘膜的一部分,使得所述部分基本上与半导体衬底的表面成一定水平, 同时使用抗蚀剂图案去除形成在自对准接触区域中的氧化膜 形成孔。