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    • 7. 发明授权
    • Inverted-pyramidal photonic crystal light emitting device
    • 倒金字塔型光子晶体发光器件
    • US07700962B2
    • 2010-04-20
    • US11564213
    • 2006-11-28
    • James McKenzieTom LeeMajd Zoorob
    • James McKenzieTom LeeMajd Zoorob
    • H01L33/00
    • H01L33/20H01L2933/0083
    • A light-emitting device (LED) is described which exhibits high extraction efficiency and an emission profile which is substantially more directional than from a Lambertian source. The device comprises a light generating layer disposed between first and second layers of semiconductor material, each having a different type of doping. An upper surface of the first layer has a tiling arrangement of inverted pyramidal or inverted frustro-pyramidal indentations in the semiconductor material filled by a material of different refractive index and which together comprise a photonic band structure. The indentations and their tiling arrangement are configured for efficient extraction of light from the device via the upper surface of the first layer and in a beam that is substantially more directional than from a Lambertian source. An enhanced device employs a reflector beneath the second layer to utilise the microcavity effect. A method for fabricating the device is also described which employs anisotropic wet etching to produce the inverted pyramidal or inverted frustro-pyramidal indentations.
    • 描述了一种发光装置(LED),其显示出高的提取效率和与朗伯源相比基本上更有方向性的发射分布。 该器件包括设置在第一和第二半导体材料层之间的发光层,每个具有不同类型的掺杂。 第一层的上表面在由不同折射率的材料填充并且一起包括光子带结构的半导体材料中具有倒棱锥体或反向截锥棱锥形凹陷的平铺布置。 压痕和它们的平铺布置被配置用于通过第一层的上表面和基本上比朗伯源更方向的光束有效地从装置提取光。 增强器件使用第二层下方的反射器来利用微腔效应。 还描述了一种用于制造该器件的方法,其采用各向异性湿法蚀刻以产生倒锥体或反向截锥棱锥形凹陷。
    • 10. 发明申请
    • THERMO-MECHANICAL CLEAVABLE STRUCTURE
    • 热机械可靠结构
    • US20060163685A1
    • 2006-07-27
    • US10905905
    • 2005-01-26
    • Fen ChenCathryn ChristiansenRichard KontraTom LeeAlvin StrongTimothy SullivanJoseph Therrien
    • Fen ChenCathryn ChristiansenRichard KontraTom LeeAlvin StrongTimothy SullivanJoseph Therrien
    • H01L29/00H01L21/00
    • H01L23/5256H01L2924/0002H01L2924/00
    • A thermo-mechanical cleavable structure is provided and may be used as a programmable fuse for integrated circuits. As applied to a programmable fuse, the thermo-mechanical cleavable structure includes an electrically conductive cleavable layer adjacent to a thermo-mechanical stressor. As electricity is passed through the cleavable layer, the cleavable layer and the thermo-mechanical stressor are heated and gas evolves from the thermo-mechanical stressor. The gas locally insulates the thermo-mechanical stressor, causing local melting adjacent to the bubbles in the thermo-mechanical stressor and the cleavable structure forming cleaving sites. The melting also interrupts the current flow through the cleavable structure so the cleavable structure cools and contracts. The thermo-mechanical stressor also contracts due to a phase change caused by the evolution of gas therefrom. As the thermo-mechanical cleavable structure cools, the cleaving sites expand causing gaps to be permanently formed therein.
    • 提供了一种热机械可切割结构,可用作集成电路的可编程保险丝。 如应用于可编程保险丝,热机械可切割结构包括与热机械应力源相邻的导电可切割层。 当电通过可切割层时,可切割层和热机械应力器被加热并且气体从热机械应力源逸出。 气体将热机械应力局部绝缘,导致邻近热机械应力的气泡局部熔化,形成裂开位置的可切割结构。 熔化还中断当前通过可切割结构的流动,因此可切割结构冷却和收缩。 热机械应力还由于由其产生的气体引起的相变而收缩。 当热机械可裂解结构冷却时,裂解位置膨胀,导致间隙永久形成。