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    • 25. 发明申请
    • NONVOLATILE SEMICONDUCTOR MEMORY ELEMENT EXCELLENT IN CHARGE RETENTION PROPERTIES AND PROCESS FOR PRODUCING THE SAME
    • 非挥发性半导体存储元件在充电保持性方面的优异性及其制造方法
    • US20080171411A1
    • 2008-07-17
    • US12046763
    • 2008-03-12
    • Masaaki TAKATAMitsumasa Koyanagi
    • Masaaki TAKATAMitsumasa Koyanagi
    • H01L21/8234H01L21/336
    • H01L21/28273H01L21/3105H01L21/316H01L21/31645H01L29/42332H01L29/66825H01L29/7881
    • A nonvolatile semiconductor memory element enabling to improve insulation performance of an insulator around a floating gate and to decrease the ratio of oxidized metal ultrafine particles in the floating gate, are provided.In a process for producing nonvolatile semiconductor memory element comprising a floating gate made of a hardly oxidizable material having a Gibbs' formation free energy for forming its oxide higher than that of Si in a range of from 0° C. to 1,200° C., and an insulator made of an oxide of an easily oxidizable material surrounding the floating gate and having such an energy equivalent or lower than that of Si, the floating gate made of hardly oxidizable material is formed by using a physical forming method, the oxide of the easily oxidizable material is formed by using a physical forming method or a chemical forming method, and after a gate insulation film is formed, a heat treatment is carried out in a mixed atmosphere of an oxidizing gas and a reducing gas in a temperature range of from 0° C. to 1,200° C. while the mixture ratio of the mixed gas and the temperature are controlled so that only the hardly oxidizable material is reduced and only the oxide of the easily oxidizable material is oxidized.
    • 提供一种非易失性半导体存储元件,其能够提高浮动栅极周围的绝缘体的绝缘性能并降低浮栅中的氧化金属超微粒子的比例。 在制造非易失性半导体存储元件的方法中,所述非易失性半导体存储元件包括由几何可氧化材料制成的浮栅,所述浮栅具有Gibbs'形成自由能,用于在0℃至1200℃的范围内形成高于Si的氧化物, 以及由易于氧化的材料的氧化物构成的绝缘体,该氧化物围绕浮动栅极并且具有等于或低于Si的能量,由几何可氧化材料制成的浮栅是通过使用物理成形法形成的, 通过使用物理形成方法或化学成型方法形成易氧化材料,在形成栅极绝缘膜之后,在氧化气体和还原气体的混合气氛中,在 0℃至1200℃,同时控制混合气体和温度的混合比,使得只有几乎不可氧化的材料被还原,并且只有易氧化的氧化物 太阳能被氧化。
    • 26. 发明授权
    • Method of fabricating semiconductor device using low dielectric constant material film
    • 使用低介电常数材料膜制造半导体器件的方法
    • US07326642B2
    • 2008-02-05
    • US11275733
    • 2006-01-26
    • Mitsumasa Koyanagi
    • Mitsumasa Koyanagi
    • H01L21/4763
    • H01L21/84H01L21/76898H01L21/8221H01L27/0688H01L27/12H01L29/42384H01L29/66772H01L29/78603H01L29/78648H01L2224/2919H01L2224/32145H01L2924/00014
    • The semiconductor device is capable of coping with speedup of operation using a low dielectric constant material film other than silicon. The base (10) formed by the substrate (11) and the low dielectric constant material film (12) whose relative dielectric constant is lower than silicon is provided. The semiconductor element layer including the MOS transistor (30) is adhered onto the surface of the base (10) for stacking. The transistor (30) is formed by using the island-shaped single-crystal Si film (31) and buried in the insulator films (15), (16) and (17). The multilayer wiring structure (18) is formed on the semiconductor element layer and is electrically connected to the transistor (30). The electrode (20) functioning as a return path for the signals is formed on the back surface of the base (10). Instead of forming the electrode (20) on the base (10), the electrodes (20A) may be arranged on the back surface of the base (10A), configuring the base (10A) as an interposer.
    • 半导体器件能够使用除硅以外的低介电常数材料膜来应对加速操作。 设置由基板(11)形成的基板(10)和相对介电常数低于硅的低介电常数材料薄膜(12)。 包括MOS晶体管(30)的半导体元件层粘附到基底(10)的表面上以进行堆叠。 晶体管(30)通过使用岛状单晶硅膜(31)形成并埋入绝缘膜(15),(16)和(17)中。 多层布线结构(18)形成在半导体元件层上并与晶体管(30)电连接。 用作信号返回路径的电极(20)形成在基座(10)的背面上。 代替在基座(10)上形成电极(20),电极(20A)可以布置在基座(10A)的后表面上,构成基座(10A)作为插入件。
    • 29. 发明授权
    • Nonvolatile semiconductor memory device having nanoparticles for charge retention
    • 具有用于电荷保留的纳米颗粒的非易失性半导体存储器件
    • US07355238B2
    • 2008-04-08
    • US11003421
    • 2004-12-06
    • Masaaki TakataMitsumasa Koyanagi
    • Masaaki TakataMitsumasa Koyanagi
    • H01L29/76
    • H01L29/42332Y10S977/943
    • A nonvolatile semiconductor memory device including a source region and a drain region formed on a surface of a semiconductor substrate, a channel-forming region formed so as to connect the source region and the drain region or so as to be sandwiched between the source region and the drain region, a tunnel insulating film formed in contact with the channel-forming region, a charge retention layer formed adjacently to the tunnel insulating film, a gate insulating film formed adjacently to the charge retention layer, and a control gate formed adjacently to the gate insulating film. The charge retention layer includes an insulating matrix having, per nonvolatile semiconductor memory device, one conductive nano-particle which is made of at least one single-element substance or chemical compound that functions as a floating gate.
    • 一种非易失性半导体存储器件,包括形成在半导体衬底的表面上的源极区域和漏极区域,形成为连接源极区域和漏极区域的沟道形成区域,以夹在源极区域和源极区域之间, 漏极区域,与沟道形成区域形成的隧道绝缘膜,与隧道绝缘膜相邻形成的电荷保持层,与电荷保持层相邻形成的栅极绝缘膜,以及与栅极绝缘膜相邻形成的控制栅极 栅极绝缘膜。 电荷保持层包括绝缘矩阵,每个非易失性半导体存储器件具有由至少一个用作浮栅的单一元素物质或化合物制成的导电纳米颗粒。