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    • 7. 发明申请
    • NONVOLATILE SEMICONDUCTOR MEMORY DEVICE HAVING EXCELLENT CHARGE RETENTION AND MANUFACTURING PROCESS OF THE SAME
    • 具有优异充电保持性及其制造工艺的非挥发性半导体存储器件
    • US20070155099A1
    • 2007-07-05
    • US11685077
    • 2007-03-12
    • Masaaki TakataMitsumasa Koyanagi
    • Masaaki TakataMitsumasa Koyanagi
    • H01L21/336H01L21/3205
    • H01L29/42332Y10S977/943
    • There has been a problem in conventional Si-type floating-gate type nonvolatile semiconductor memory devices that the charge retention characteristic is low due to insufficiently large electron affinity of Si, therefore improvement of the memory performances, such as scaling down of a memory cell and increasing operation speed, have been difficult to be achieved due to the essential problem. In order to solve the above problem, in the nonvolatile semiconductor memory device of the present invention, a material having large work function or large electron affinity or a material having a work function close to that of semiconductor substrate or of a control gate, is employed for a floating gate retaining charges. Further, an amorphous material having small electron affinity for an insulating matrix is used. Further, at a time of deposition of charge retention layer, the supply ratio of the nano-particle material and the insulating matrix material, such as the mixture ratio of materials of both phases in a target in a sputtering method, is adjusted. By these methods, the charge retention characteristic of the floating-gate type nonvolatile semiconductor memory device can be improved, and the above-mentioned problem of the nonvolatile semiconductor memory device can be solved.
    • 在常规的Si型浮栅型非易失性半导体存储器件中存在由于Si的电子亲和力不足而导致的电荷保持特性低的问题,因此存储器性能的改善,例如存储器单元的缩小和 提高运行速度,由于基本问题而难以实现。 为了解决上述问题,在本发明的非易失性半导体存储器件中,使用具有大功函数或大电子亲和性的材料或具有接近半导体衬底或控制栅的功函数的材料 为浮门保留费用。 此外,使用对绝缘基体具有小的电子亲和力的无定形材料。 此外,在电荷保持层的沉积时,调整纳米粒子材料和绝缘基体材料的供给比例,例如溅射法中的靶中的两相的材料的混合比例。 通过这些方法,可以提高浮栅型非易失性半导体存储器件的电荷保持特性,并且可以解决上述非易失性半导体存储器件的问题。
    • 8. 发明申请
    • Nonvolatile semiconductor memory device having excellent charge retention and manufacturing process of the same
    • 非易失性半导体存储器件具有优异的电荷保持率及其制造工艺
    • US20060118853A1
    • 2006-06-08
    • US11003421
    • 2004-12-06
    • Masaaki TakataMitsumasa Koyanagi
    • Masaaki TakataMitsumasa Koyanagi
    • H01L29/76
    • H01L29/42332Y10S977/943
    • There has been a problem in conventional Si-type floating-gate type nonvolatile semiconductor memory devices that the charge retention characteristic is low due to insufficiently large electron affinity of Si, therefore improvement of the memory performances, such as scaling down of a memory cell and increasing operation speed, have been difficult to be achieved due to the essential problem. In order to solve the above problem, in the nonvolatile semiconductor memory device of the present invention, a material having large work function or large electron affinity or a material having a work function close to that of semiconductor substrate or of a control gate, is employed for a floating gate retaining charges. Further, an amorphous material having small electron affinity for an insulating matrix is used. Further, at a time of deposition of charge retention layer, the supply ratio of the nano-particle material and the insulating matrix material, such as the mixture ratio of materials of both phases in a target in a sputtering method, is adjusted. By these methods, the charge retention characteristic of the floating-gate type nonvolatile semiconductor memory device can be improved, and the above-mentioned problem of the nonvolatile semiconductor memory device can be solved.
    • 在常规的Si型浮栅型非易失性半导体存储器件中存在由于Si的电子亲和力不足而导致的电荷保持特性低的问题,因此存储器性能的改善,例如存储器单元的缩小和 增加运行速度,由于基本问题而难以实现。 为了解决上述问题,在本发明的非易失性半导体存储器件中,使用具有大功函数或大电子亲和性的材料或具有接近半导体衬底或控制栅的功函数的材料 为浮门保留费用。 此外,使用对绝缘基体具有小的电子亲和力的无定形材料。 此外,在电荷保持层的沉积时,调整纳米粒子材料和绝缘基体材料的供给比例,例如溅射法中的靶中的两相的材料的混合比例。 通过这些方法,可以提高浮栅型非易失性半导体存储器件的电荷保持特性,并且可以解决上述非易失性半导体存储器件的问题。
    • 9. 发明申请
    • METHOD OF FABRICATING SEMICONDUCTOR DEVICE USING LOW DIELECTRIC CONSTANT MATERIAL FILM
    • 使用低介电常数材料薄膜制作半导体器件的方法
    • US20060115943A1
    • 2006-06-01
    • US11275733
    • 2006-01-26
    • Mitsumasa Koyanagi
    • Mitsumasa Koyanagi
    • H01L21/8234
    • 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。