Metal oxynitride transistor devices
    7.
    发明申请
    Metal oxynitride transistor devices 审中-公开
    金属氮氧化物晶体管器件

    公开(公告)号:US20160308067A1

    公开(公告)日:2016-10-20

    申请号:US14545285

    申请日:2015-04-17

    摘要: A thin film transistor with a first metal oxynitride channel layer or a first metal oxide channel layer is provided to have controlled channel doping concentrations in a bottom surface region, a central channel region and a top surface region so that doping concentration ratios between the bottom surface region and the central channel region and between the top surface region and the central channel region are greater than a first threshold doping ratio and less than a second threshold doping ratio in order to retain more uniform charge carrier mobility values in the first channel layer and to improve the performance of the thin film transistor devices.

    摘要翻译: 提供了具有第一金属氧氮化物沟道层或第一金属氧化物沟道层的薄膜晶体管,以在底表面区域,中心沟道区域和顶表面区域中具有受控的沟道掺杂浓度,使得底表面 区域和中心沟道区域之间以及顶表面区域和中心沟道区域之间的区域大于第一阈值掺杂比并且小于第二阈值掺杂比,以便在第一沟道层中保持更均匀的载流子迁移率值,并且 提高薄膜晶体管器件的性能。

    Tunable surface acoustic wave resonators and filters

    公开(公告)号:US20170085246A1

    公开(公告)日:2017-03-23

    申请号:US14756554

    申请日:2015-09-17

    IPC分类号: H03H9/145 H03H9/25

    摘要: Filters and oscillators are important components for electronic systems especially those for communications. For many portable units operating at 2 GHz or less, surface acoustic wave resonators are used as filters or oscillators, the resonant frequency is determined by the electrode pitch and velocity of the surface acoustic waves. Because of the large number of frequency bands for communications, it is important to have SAW resonators where the resonant frequencies are tunable and adjustable. This invention provides tunable surface acoustic wave resonators utilizing semiconducting piezoelectric layers having embedded or elevated electrode doped regions. Both metallization ratio and loading mass are changed by varying a DC biasing voltage to effect a change in the resonant frequency. A plurality of the present tunable SAW devices may be connected into a tunable and selectable microwave filter for selecting and adjusting of the bandpass frequency or an tunable oscillator by varying the DC biasing voltages.