ZnS blue light emitting device
    71.
    发明授权
    ZnS blue light emitting device 失效
    ZnS蓝色发光器件

    公开(公告)号:US4916496A

    公开(公告)日:1990-04-10

    申请号:US256125

    申请日:1988-10-06

    CPC分类号: H01L33/0037 H01L33/0083

    摘要: An improved ZnS blue light emitting device is formed with a low-resistivity ZnS layer serving as a luminescent layer, a high-resistivity insulating layer of multi-layer structure for hole carrying injection above the low-resistivity ZnS layer and an electrode on the high-resistivity insulating layer. The high-resistivity insulating layer includes at least two stacked layers of different insulator materials serving different functions.

    摘要翻译: 形成了一种改进的ZnS蓝色发光器件,其具有用作发光层的低电阻率ZnS层,用于在低电阻率ZnS层上方进行空穴注入的多层结构的高电阻绝缘层和高电极上的电极 电阻绝缘层。 高电阻绝缘层包括不同功能的不同绝缘体材料的至少两层堆叠层。

    Apparatus for protecting of coal mine workers
    72.
    发明授权
    Apparatus for protecting of coal mine workers 失效
    煤矿工人保护设备

    公开(公告)号:US4067618A

    公开(公告)日:1978-01-10

    申请号:US726406

    申请日:1976-09-24

    摘要: An apparatus for protecting coal mine workers from flying coal, rocks, coal dust, scattering coal and the like, which are produced as a drum shearer works in a longwall coal face. The apparatus is provided with isolated walls or chambers between iron props installed in the self-advancing supports provided in the longwall coal face by use of fastening members. The isolated wall or chamber is connected with its adjacent wall or chamber by a flexible connecting member.

    摘要翻译: 一种用于保护煤矿工人免受煤矿,岩石,煤尘,散煤等的影响,作为鼓式剪煤机生产的工具在长壁煤面上。 该装置在通过使用紧固构件安装在设置在长壁煤面中的自行进支撑件中的铁道之间设置有隔离的壁或室。 隔离的墙壁或室通过柔性连接构件与其相邻的壁或室连接。