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    • 2. 发明公开
    • 반도체 장치
    • 半导体器件
    • KR1020140144157A
    • 2014-12-18
    • KR1020140148549
    • 2014-10-29
    • 가부시키가이샤 한도오따이 에네루기 켄큐쇼
    • 이찌조미쯔히로엔도도시야스즈끼구니히꼬다께무라야스히꼬
    • H01L29/786H01L21/336G02F1/136
    • H01L29/7869H01L29/78606
    • In a transistor including an oxide semiconductor, hydrogen in the oxide semiconductor leads to degradation of electric characteristics of the transistor. Thus, an objective is to provide a semiconductor device having good electrical characteristics. An insulating layer in contact with an oxide semiconductor layer where a channel region is formed is formed by a plasma CVD method using a silicon halide. The insulating layer thus formed has a hydrogen concentration less than 6×10 20 atoms/cm3 atoms/cm3 and a halogen concentration greater than or equal to 1×10 20 atoms/cm3 atoms/cm3; accordingly, hydrogen diffusion into the oxide semiconductor layer can be prevented and hydrogen in the oxide semiconductor layer is inactivated or released from the oxide semiconductor layer by the halogen, whereby a semiconductor device having good electrical characteristics can be provided.
    • 在包括氧化物半导体的晶体管中,氧化物半导体中的氢导致晶体管的电特性的劣化。 因此,目的是提供具有良好电气特性的半导体器件。 通过使用卤化硅的等离子体CVD法形成与形成沟道区的氧化物半导体层接触的绝缘层。 如此形成的绝缘层的氢浓度小于6×10 20原子/ cm 3原子/ cm 3,卤素浓度大于或等于1×10 20原子/ cm3原子/ cm3; 因此,可以防止氢氧化进入氧化物半导体层,并且氧化物半导体层中的氢被卤素氧化半导体层失活或释放,从而可以提供具有良好电特性的半导体器件。