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    • 7. 发明申请
    • MANUFACTURING METHOD OF SEMICONDUCTOR DEVICE
    • 半导体器件的制造方法
    • US20120258575A1
    • 2012-10-11
    • US13437271
    • 2012-04-02
    • Yuhei SATOKeiji SATOToshinari SASAKITetsunori MARUYAMAAtsuo ISOBETsutomu MURAKAWASachiaki TEZUKA
    • Yuhei SATOKeiji SATOToshinari SASAKITetsunori MARUYAMAAtsuo ISOBETsutomu MURAKAWASachiaki TEZUKA
    • H01L21/336
    • H01L29/7869H01L21/477
    • To provide a highly reliable semiconductor device manufactured by giving stable electric characteristics to a semiconductor device including an oxide semiconductor. In a manufacturing process of a transistor, an oxide semiconductor layer, a source electrode layer, a drain electrode layer, a gate insulating film, a gate electrode layer, and an aluminum oxide film are formed in this order, and then heat treatment is performed on the oxide semiconductor layer and the aluminum oxide film, whereby an oxide semiconductor layer from which an impurity containing a hydrogen atom is removed and which includes a region containing oxygen more than the stoichiometric proportion is formed. In addition, when the aluminum oxide film is formed, entry and diffusion of water or hydrogen into the oxide semiconductor layer from the air due to heat treatment in a manufacturing process of a semiconductor device or an electronic appliance including the transistor can be prevented.
    • 提供通过给包括氧化物半导体的半导体器件赋予稳定的电特性而制造的高可靠性的半导体器件。 在晶体管的制造工序中,依次形成氧化物半导体层,源极电极层,漏极电极层,栅极绝缘膜,栅电极层和氧化铝膜,然后进行热处理 在氧化物半导体层和氧化铝膜上形成除去含有氢原子的杂质的氧化物半导体层,其中含有超过化学计量比的氧的区域。 此外,当形成氧化铝膜时,可以防止在半导体器件或包括晶体管的电子设备的制造过程中由于热处理而从空气中进入和扩散水或氢进入氧化物半导体层。