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    • 3. 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。
    • 4. 发明申请
    • SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME
    • 半导体器件及其制造方法
    • US20130056727A1
    • 2013-03-07
    • US13602489
    • 2012-09-04
    • Naoto YAMADEJunichi KOEZUKA
    • Naoto YAMADEJunichi KOEZUKA
    • H01L29/786H01L21/363
    • H01L29/78693H01L21/02554H01L21/02565H01L21/02631H01L27/12H01L29/04H01L29/10H01L29/7869
    • A semiconductor device which is miniaturized and has sufficient electrical characteristics to function as a transistor is provided. In a semiconductor device including a transistor in which a semiconductor layer, a gate insulating layer, and a gate electrode layer are stacked in that order, an oxide semiconductor film which contains at least four kinds of elements of indium, gallium, zinc, and oxygen, and in which the percentage of the indium is twice or more as large as each of the percentage of the gallium and the percentage of the zinc when the composition of the four elements is expressed in atomic percentage is used as the semiconductor layer. In the semiconductor device, the oxide semiconductor film is a film to which oxygen is introduced in the manufacturing process and contains a large amount of oxygen, and an insulating layer including an aluminum oxide film is provided to cover the transistor.
    • 提供小型化并具有足够的电特性用作晶体管的半导体器件。 在包括半导体层,栅极绝缘层和栅极电极层的晶体管的半导体器件中,依次包含铟,镓,锌和氧中的至少四种元素的氧化物半导体膜 ,并且其中当四种元素的组成以原子百分比表示时,铟的百分比是镓的百分比和锌的百分比的两倍或更多,而作为半导体层。 在半导体器件中,氧化物半导体膜是在制造过程中引入氧并含有大量氧的膜,并且提供包括氧化铝膜的绝缘层以覆盖晶体管。