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发明授权
CN103839834B 半导体装置及其制造方法 失效 - 权利终止

半导体装置及其制造方法
摘要：
本发明涉及半导体装置及其制造方法。本发明的课题在于提供包括电特性优良且可靠性高的薄膜晶体管的半导体装置及没有不均匀性地制造该半导体装置的方法。本发明的要旨在于使用包含In、Ga及Zn的氧化物半导体膜作为半导体层，并包括在半导体层和源电极层及漏电极层之间设置有缓冲层的反交错型（底栅结构）的薄膜晶体管。通过在源电极层及漏电极层和半导体层之间意图性地设置载流子浓度比半导体层高的包含In、Ga及Zn的缓冲层，形成欧姆接触。
摘要（英）：

To offer a semiconductor device including a thin film transistor having excellent characteristics and high reliability and a method for manufacturing the semiconductor device without variation. The summary is to include an inverted-staggered (bottom-gate structure) thin film transistor in which an oxide semiconductor film containing In, Ga, and Zn is used for a semiconductor layer and a buffer layer is provided between the semiconductor layer and source and drain electrode layers. An ohmic contact is formed by intentionally providing a buffer layer containing In, Ga, and Zn and having a higher carrier concentration than the semiconductor layer between the semiconductor layer and the source and drain electrode layers.

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