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    • 7. 发明专利
    • Semiconductor device and manufacturing method of the same
    • 半导体器件及其制造方法
    • JP2014013851A
    • 2014-01-23
    • JP2012151027
    • 2012-07-05
    • Hitachi Ltd株式会社日立製作所
    • UCHIYAMA HIROYUKIWAKANA HIRONORI
    • H01L29/786H01L29/423H01L29/49
    • PROBLEM TO BE SOLVED: To provide a technology of enabling improvement of performance of a semiconductor device.SOLUTION: A thin film transistor 10 includes a wire member 12 supported on a support substrate 11. The wire member 12 has as a core, a conductor wire 20 which functions as a gate line, and a surface of the conductor wire 20 is sequentially covered with a gate insulation film 21 and a channel layer 22. The wire member 12 is supported in a sandwiched manner by source/drain electrodes 13, 14 formed on the support substrate 11. The source/drain electrodes 13, 14 are electrically connected with the channel layer 22 at positions away from each other along a circumferential direction of a cross section of the wire member 12.
    • 要解决的问题:提供能够提高半导体器件的性能的技术。解决方案:薄膜晶体管10包括支撑在支撑基板11上的线构件12.线构件12具有作为芯的导线 20,其用作栅极线,并且导体线20的表面依次被栅极绝缘膜21和沟道层22覆盖。线构件12以形成的源极/漏极13,14夹持的方式被支撑 源极/漏极13,14沿着线构件12的横截面的圆周方向彼此远离的位置与沟道层22电连接。
    • 10. 发明专利
    • Oxide semiconductor device, manufacturing method thereof, and active matrix substrate
    • 氧化物半导体器件及其制造方法和有源矩阵衬底
    • JP2010140919A
    • 2010-06-24
    • JP2008312814
    • 2008-12-09
    • Hitachi Ltd株式会社日立製作所
    • UCHIYAMA HIROYUKIKAWAMURA TETSUSHIWAKANA HIRONORI
    • H01L29/786H01L21/336
    • H01L29/7869H01L21/02554H01L21/02565H01L21/02617H01L21/28291H01L27/10873H01L27/112H01L27/11206H01L27/1225H01L27/3262H01L51/5206
    • PROBLEM TO BE SOLVED: To solve the problem that a characteristic which an oxide semiconductor material originally has cannot be utilized due to a difference in work function and difficulty in reducing contact resistance between a metal electrode material and an oxide semiconductor thin-film transistor such as indium oxide gallium zinc and zinc oxide tin. SOLUTION: A phenomenon is utilized in which contact resistance between a semiconductor oxide and metal varies depending on the percentage of added oxygen in gas which is introduced at the film-formation of the semiconductor oxide such as indium oxide gallium zinc and zinc oxide tin. The contact resistance can be suppressed by raising the percentage of added oxygen to 10% or higher, however, in contrast, a threshold potential shift tends to increase. Therefor, a region from the surface where a metal contacts with the semiconductor oxide down to as deep as at least 3 nm is formed as a contact layer with the percentage of added oxygen being 10% or higher while the region being a main channel layer is formed at the percentage of the added oxygen of 10% or lower to form a multilayer structure. Thus, both an ohmic property relative to an electrode metal and reliability in suppressing the threshold potential shift can be made compatible. COPYRIGHT: (C)2010,JPO&INPIT
    • 解决的问题为了解决由于功函数的不同而难以使金属电极材料与氧化物半导体薄膜之间的接触电阻降低的问题,原来具有氧化物半导体材料的特性不能利用的问题 晶体管,如氧化铟镓锌和氧化锌锡。 解决方案:利用半导体氧化物和金属之间的接触电阻根据在氧化铟镓锌和氧化锌等半导体氧化物成膜时引入的气体中添加的氧气的百分比而变化的现象 锡。 可以通过将添加的氧的百分比提高到10%以上来抑制接触电阻,然而,相反,阈值电位偏移趋于增加。 因此,形成从金属与半导体氧化物接触至深度至少3nm的表面的区域作为接触层,其中添加的氧的百分比为10%以上,而主沟道层的区域为 以加入的氧气的百分比形成10%以下,形成多层结构。 因此,相对于电极金属的欧姆特性和抑制阈值电位偏移的可靠性都可以兼容。 版权所有(C)2010,JPO&INPIT