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    • 5. 发明申请
    • SEMICONDUCTOR DEVICE
    • 半导体器件
    • US20130020569A1
    • 2013-01-24
    • US13547119
    • 2012-07-12
    • Shunpei YAMAZAKINaoto YAMADEJunichi KOEZUKA
    • Shunpei YAMAZAKINaoto YAMADEJunichi KOEZUKA
    • H01L29/12
    • H01L27/1225
    • A semiconductor device which can operate at high speed and consumes a smaller amount of power is provided. In a semiconductor device including transistors each including an oxide semiconductor, the oxygen concentration of the oxide semiconductor film of the transistor having small current at negative gate voltage is different from that of the oxide semiconductor film of the transistor having high field-effect mobility and large on-state current. Typically, the oxygen concentration of the oxide semiconductor film of the transistor having high field-effect mobility and large on-state current is lower than that of the oxide semiconductor film of the transistor having small current at negative gate voltage.
    • 提供了可以高速运行并消耗更少功率的半导体器件。 在包括各自包含氧化物半导体的晶体管的半导体器件中,在负栅极电压下具有小电流的晶体管的氧化物半导体膜的氧浓度与具有高场效应迁移率的晶体管的氧化物半导体膜的氧浓度不同 通态电流。 通常,具有高场电迁移率和大导通状态电流的晶体管的氧化物半导体膜的氧浓度低于在负栅极电压下具有小电流的晶体管的氧化物半导体膜的氧浓度。
    • 9. 发明申请
    • METHOD FOR MANUFACTURING SOI SUBSTRATE
    • 制造SOI衬底的方法
    • US20120164817A1
    • 2012-06-28
    • US13411864
    • 2012-03-05
    • Takeshi SHICHIJunichi KOEZUKAHideto OHNUMAShunpei YAMAZAKI
    • Takeshi SHICHIJunichi KOEZUKAHideto OHNUMAShunpei YAMAZAKI
    • H01L21/46
    • H01L27/1266H01L21/76254H01L27/1214H01L29/66772
    • The present invention provides a method for manufacturing an SOI substrate, to improve planarity of a surface of a single crystal semiconductor layer after separation by favorably separating a single crystal semiconductor substrate even in the case where a non-mass-separation type ion irradiation method is used, and to improve planarity of a surface of a single crystal semiconductor layer after separation as well as to improve throughput. The method includes the steps of irradiating a single crystal semiconductor substrate with accelerated ions by an ion doping method while the single crystal semiconductor substrate is cooled to form an embrittled region in the single crystal semiconductor substrate; bonding the single crystal semiconductor substrate and a base substrate with an insulating layer interposed therebetween; and separating the single crystal semiconductor substrate along the embrittled region to form a single crystal semiconductor layer over the base substrate with the insulating layer interposed therebetween.
    • 本发明提供一种制造SOI衬底的方法,即使在非质量分离型离子照射方法为非质子分离型离子照射方法的情况下,通过有利地分离单晶半导体衬底来提高分离后的单晶半导体层的表面的平面性 并且在分离之后提高单晶半导体层的表面的平面性以及提高生产量。 该方法包括以下步骤:当单晶半导体衬底被冷却以在单晶半导体衬底中形成脆化区域时,通过离子掺杂方法照射具有加速离子的单晶半导体衬底; 将单晶半导体衬底和基底衬底之间插入绝缘层; 并且沿着脆化区域分离单晶半导体衬底,以在基底衬底上形成绝缘层,形成单晶半导体层。