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    • 63. 发明申请
    • ENCAPSULATION METHOD FOR PACKAGING SEMICONDUCTOR COMPONENTS WITH EXTERNAL LEADS
    • 用于封装具有外部引线的半导体元件的封装方法
    • US20110129962A1
    • 2011-06-02
    • US12592597
    • 2009-11-30
    • Limin WangLei ShiLiang ZhaoFeng Ye
    • Limin WangLei ShiLiang ZhaoFeng Ye
    • H01L21/78
    • H01L21/561H01L21/4842H01L23/3107H01L24/97H01L2924/01033H01L2924/01079H01L2924/01082H01L2924/014
    • This invention discloses a method for packaging a semiconductor device with leads extending outside its encapsulation. The method comprises the following steps: Step 1, providing a lead frame comprising a plurality of lead frame units arranged in two dimensional array, each lead frame unit comprising a die pad and a plurality of leads located along two opposite sides of the die pad, attaching a semiconductor chip onto the die pad and electrically connecting the electrodes on each chip to its corresponding leads; Step 2, Encapsulating the chips, the die pads, and the leads with molding material into a plurality of one dimensional plastic encapsulation bars with the leads of each lead frame unit extending out along two opposite sides of the plastic encapsulation bars connecting to a plurality of tie bars substantially parallel to the plastic encapsulation bars; Step 3, Trimming off the tie bars therefore cutting off the connections between the leads to the tie bars while preserving a portion of the leads extending out of the plastic encapsulation bars; and Step 4, Sawing through the plastic encapsulation bars to form a plurality of individual semiconductor components with leads extending outside its encapsulation.
    • 本发明公开了一种用于封装半导体器件的方法,该半导体器件具有在其封装之外延伸的引线。 该方法包括以下步骤:步骤1,提供包括以二维阵列排列的多个引线框单元的引线框架,每个引线框架单元包括管芯焊盘和位于管芯焊盘的两个相对侧的多个引线, 将半导体芯片附接到芯片焊盘上并将每个芯片上的电极电连接到其对应的引线; 步骤2,通过模塑材料将芯片,芯片焊盘和引线封装成多个一维塑料封装棒,每个引线框架单元的引线沿塑料封装条的两个相对侧延伸,连接到多个 连接条基本上平行于塑料封装条; 步骤3,修剪连接杆,从而切断导线到连接杆之间的连接,同时保留从塑料封装棒伸出的一部分引线; 和步骤4,通过塑料封装条锯切以形成多个单独的半导体部件,其引线延伸到其封装外部。
    • 66. 发明授权
    • Method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a top cladding
    • 通过选择顶部包层的波导芯宽度来控制波导双折射的方法和装置
    • US07609917B2
    • 2009-10-27
    • US12079930
    • 2008-03-28
    • Farnaz ParhamiLiang ZhaoFan Zhong
    • Farnaz ParhamiLiang ZhaoFan Zhong
    • G02B6/12G02B6/10G02B6/34
    • G02B6/12023G02B6/126
    • A method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a tuned top clad is described herein. In one example, a dopant concentration within a top cladding material is between 3-6% (wt.). Given a tuned top cladding composition, a width of the waveguide core is pre-selected such that birefringence is minimized, i.e., a zero, or near zero. The desirable width of the waveguide core is determined by calculating the distribution of stress in the top cladding over a change in temperature. From this distribution of stress, a relationship between the polarization dependent wavelength and variable widths of the waveguide in the arrayed waveguide grating are determined. This relationship determines a zero value, or near zero value, of polarization dependent wavelength for a given range of waveguide widths. Accordingly, the width of the waveguide may be selected such that the polarization dependent wavelength is minimized.
    • 本文描述了通过选择用于调谐顶部包层的波导芯宽度来控制波导双折射的方法和装置。 在一个实例中,顶部包层材料内的掺杂剂浓度在3-6%(重量)之间。 给定一个调整的顶部包层组成,预先选择波导芯的宽度,使得双折射最小化,即零或接近零。 通过计算在顶部包层中的应力在温度变化中的分布来确定波导芯的期望宽度。 根据这种应力分布,确定阵列波导光栅中波导的偏振相关波长与可变宽度之间的关系。 对于给定的波导宽度范围,该关系确定偏振相关波长的零值或近零值。 因此,可以选择波导的宽度使得偏振相关波长最小化。
    • 67. 发明授权
    • Method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a top clad
    • 通过选择顶部包层的波导芯宽度来控制波导双折射的方法和装置
    • US06850670B2
    • 2005-02-01
    • US09894049
    • 2001-06-28
    • Farnaz ParhamiLiang ZhaoFan Zhong
    • Farnaz ParhamiLiang ZhaoFan Zhong
    • G02B6/12G02B6/126G02B6/34
    • G02B6/126G02B2006/121
    • A method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a tuned top clad is described herein. A tuned top cladding describes a pre-existing dopant concentration within a top cladding material. Given a tuned top cladding composition, a width of the waveguide core is pre-selected such that birefringence is minimized, i.e., a zero, or near zero. The desirable width of the waveguide core is determined by calculating the distribution of stress in the top cladding over a change in temperature. From this distribution of stress, a relationship between the polarization dependent wavelength and variable widths of the waveguide in the arrayed waveguide grating are determined. This relationship determines a zero value, or near zero value, of polarization dependent wavelength for a given range of waveguide widths. Accordingly, the width of the waveguide may be selected such that the polarization dependent wavelength is minimized.
    • 本文描述了通过选择用于调谐顶部包层的波导芯宽度来控制波导双折射的方法和装置。 调谐的顶部包层描述了顶部包层材料中预先存在的掺杂剂浓度。 给定一个调整的顶部包层组成,预先选择波导芯的宽度,使得双折射最小化,即零或接近零。 通过计算在顶部包层中的应力在温度变化中的分布来确定波导芯的期望宽度。 根据这种应力分布,确定阵列波导光栅中波导的偏振相关波长与可变宽度之间的关系。 对于给定的波导宽度范围,该关系确定偏振相关波长的零值或近零值。 因此,可以选择波导的宽度使得偏振相关波长最小化。
    • 70. 发明授权
    • Autonomous fluid control device having a movable valve plate for downhole fluid selection
    • 具有用于井下流体选择的可动阀板的自主流体控制装置
    • US08991506B2
    • 2015-03-31
    • US13640542
    • 2011-10-31
    • Jean-Marc LopezLiang Zhao
    • Jean-Marc LopezLiang Zhao
    • E21B34/08E21B43/12F16K15/03E21B34/00
    • E21B34/08E21B43/12E21B2034/005F16K15/03
    • An apparatus and method are described for autonomously controlling flow of fluid in a subterranean well, where fluid flow is controlled based on a fluid characteristic, such as viscosity or density, which changes over time. Fluid flows into a vortex assembly where a centrifugal force is imparted to the fluid. A less viscous fluid will have a relatively greater velocity and centrifugal force than a more viscous fluid. The fluid exits the vortex chamber by both a vortex outlet and a peripheral outlet. An autonomous valve element moves between an open position, in which fluid flows freely through the peripheral outlet, and a closed position, in which fluid flow through the peripheral outlet is restricted. The valve element is moved by the centrifugal force of the fluid, such that a fluid having a higher centrifugal force moves the valve element to the closed position, thereby reducing the total fluid flow through the vortex assembly.
    • 描述了一种用于自主控制地下井中的流体流动的装置和方法,其中基于随时间变化的流体特性(例如粘度或密度)来控制流体流动。 流体流入涡流组件,其中离心力被施加到流体。 较粘稠的流体将具有比较粘稠的流体相对更大的速度和离心力。 流体通过涡流出口和外围出口都离开涡流室。 自主阀元件在流体通过周边出口自由流动的打开位置和闭合位置之间移动,在该位置限制流过外围出口的流体流动。 阀元件通过流体的离心力移动,使得具有较高离心力的流体将阀元件移动到关闭位置,从而减少通过涡流组件的总流体流量。