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    • 27. 发明授权
    • Micromachined mass flow sensor with condensation prevention and method of making the same
    • 微加速质量流量传感器,防止凝结,并制作相同的方法
    • US09360357B2
    • 2016-06-07
    • US13847045
    • 2013-03-19
    • Liji HuangChih-Chang Chen
    • Liji HuangChih-Chang Chen
    • G01F1/699G01F1/684G01F1/692
    • G01F1/699G01F1/6845G01F1/692
    • The design and manufacture method of a silicon mass flow sensor made with silicon micromachining (a.k.a. MEMS, Micro Electro Mechanical Systems) process for applications of gas flow measurement with highly humidified or liquid vapors is disclosed in the present invention. The said silicon mass flow sensor operates with an embedded heater and an adjacent control temperature sensor beneath the integrated calorimetric and thermal dissipative sensing thermistors. When the condensation takes place at the surface of the said silicon mass flow sensor, the embedded heater shall be turned on to elevate the temperature of the supporting membrane or substrate for the sensing thermistors. The elevated temperature shall be adjusted to above the vaporization temperature with the feedback data of the adjacent temperature sensor such that the surface condensation due to the presence of the liquid vapors in a gas flow can be effectively eliminated.
    • 在本发明中公开了使用硅微加工(a.k.a.Microchip,Micro Electro Mechanical Systems)制造的硅质量流量传感器的设计和制造方法,其用于具有高度加湿或液体蒸气的气流测量的应用。 所述硅质量流量传感器使用嵌入式加热器和在集成的量热和热耗散感测热敏电阻之下的相邻控制温度传感器来操作。 当冷凝发生在所述硅质量流量传感器的表面时,嵌入式加热器应被打开以升高感测热敏电阻的支撑膜或基底的温度。 应使用相邻温度传感器的反馈数据将升高的温度调节到高于蒸发温度,以便能够有效地消除气流中存在液体蒸汽的表面冷凝。
    • 28. 发明授权
    • MEMS utility meters with exchangeable metrology unit
    • 具有可更换计量单元的MEMS功率表
    • US08994552B2
    • 2015-03-31
    • US13662520
    • 2012-10-28
    • Changming JiangYong FengSugang JiangChih-Chang ChenLiji Huang
    • Changming JiangYong FengSugang JiangChih-Chang ChenLiji Huang
    • G01F5/00G08C15/06H04Q9/00
    • H04Q9/00H04Q2209/43H04Q2209/60
    • An all-electronic utility gas meter using with micromachined (a.k.a. MEMS Micro Electro Mechanical Systems) silicon sensor to measure gas metrology data for custody transfer or tariff in city gas metering application is disclosed in the present invention. The meter has two separate metrology units. One of the units is located in the main flow channel with the insertion probing configuration while the other is configured as a bypass unit assembly with the main metrology unit. The bypass metrology unit can perform independent metrology tasks and can be exchanged onsite during service, maintenance or repair without dismantle the meter from the service pipeline. The bypass metrology unit also can be used to compare the measured data from time to time and performance self-diagnosis that shall help the performance and data authentication during the meter field service. Both of the units can be powered by battery or external sources. The units can be connected to network as well as provide internal plural storages for data transmission and safety.
    • 在本发明中公开了一种使用微机械(即微机电MEMS机电系统)硅传感器来测量用于城市燃气计量应用中的监管转移或关税的气体计量数据的全电气公用事业气体计量器。 仪表有两个独立的计量单位。 其中一个单元位于具有插入探测配置的主流道中,而另一个被配置为与主计量单元的旁路单元组件。 旁路计量单元可以执行独立的计量任务,并可在维修,维护或维修期间进行现场交换,而无需将仪表从服务管道拆除。 旁路计量单元还可用于比较不时测量的数据和性能自我诊断,这将有助于仪表现场服务期间的性能和数据认证。 这两个单元可以由电池或外部来源供电。 这些单元可以连接到网络,并提供用于数据传输和安全的内部多个存储。
    • 30. 发明申请
    • Micromachined High Breakdown Voltage ESD Protection Device for Light Emitting Diode and Method of Making the Same
    • 用于发光二极管的微加工高击穿电压ESD保护装置及其制造方法
    • US20140268440A1
    • 2014-09-18
    • US13795489
    • 2013-03-12
    • Chih-Chang ChenLiji Huang
    • Chih-Chang ChenLiji Huang
    • H02H9/04
    • H02H9/046H01L27/0248
    • This invention relates to a micromachined ESD protection device and its microfabrication method for light emitting diode (LEDs) chips. The LEDs is coupled to the ESD protection device in a shunt connection to absorb and eliminate the electrostatic charges induced by human contact or other voltage spike sources. The ESD protection circuit can prevent the LED from burning down and extend its lifespan. By using a thick polyimide layer as the dielectric film for capacitors in the micromachined ESD protection device at the current invention has the advantages with high breakdown voltage compared to other ESD protection circuits. And furthermore, the device in the current invention is easy for mass production with low manufacturing cost. Another embodiment of the present invention is that the multiple-array arrangement in current micromachined ESD protection device could greatly enhance the liability due to multiple-protection and thus to provide the possibility of multiple-times usage.
    • 本发明涉及一种用于发光二极管(LED)芯片的微加工ESD保护器件及其微细加工方法。 LED在分流连接中耦合到ESD保护装置,以吸收和消除由人接触或其它电压尖峰源引起的静电电荷。 ESD保护电路可以防止LED燃烧,延长使用寿命。 通过使用厚聚酰亚胺层作为本发明的微加工ESD保护器件中的电容器用电介质膜,具有与其它ESD保护电路相比具有高击穿电压的优点。 此外,本发明的装置容易进行批量生产,制造成本低。 本发明的另一个实施例是当前微加工ESD保护装置中的多阵列布置可以大大增强由于多重保护引起的责任,从而提供多次使用的可能性。