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1. 发明授权

US5665653A Method for encapsulating an electrochemical sensor 失效
标题翻译：封装电化学传感器的方法
公开(公告)号：US5665653A
公开(公告)日：1997-09-09
申请号：US412705
申请日：1995-03-29
申请人： Rex O. Bare , Andy Scherer
发明人： Rex O. Bare , Andy Scherer
IPC分类号： G01N27/28 , H01L25/04 , H01L23/31 , H01L25/16
CPC分类号： G01N27/414 , H01L2224/48091
摘要： An electrochemical sensor assembly which allows a solution to make contact with an active sensing area of a sensor, while constraining the solution such that the fluid does not contact the sensor electronics and a method for fabricating such a sensor assembly. A sensor assembly is fabricated in accordance with a simple process, including: fabricating a master pattern which matches the external profile of an epoxy shell which will encapsulate a substrate upon which the sensors are mounted; forming a flexible tool (or mold) which conforms to the general profile of the master pattern; placing sensors together with any other desired electronic circuitry on a substrate (such as a printed circuit board or a ceramic pad to form a "hybrid"); pressing a number of electrical contact points on the hybrid and the active sensing area of each sensor on the substrate into contact with flexible protrusions of the flexible tool; and potting the hybrid. Due to the fact that the protrusions from the flexible tool are in contact with the hybrid and structures thereon, a seal is formed to prevent potting material from contacting and covering the predetermined areas of the hybrid covered by the protrusions from the flexible tool.
摘要翻译：一种电化学传感器组件，其允许溶液与传感器的主动感测区域接触，同时约束溶液，使得流体不接触传感器电子器件以及用于制造这种传感器组件的方法。根据简单的过程制造传感器组件，包括：制造匹配环氧树脂外壳的外部轮廓的主图案，其将封装安装有传感器的基板; 形成符合主图案的一般轮廓的柔性工具（或模具）; 将传感器与任何其它所需的电子电路放置在基板（例如印刷电路板或陶瓷垫以形成“混合”）上; 将混合物上的多个电接触点和基板上每个传感器的主动感测区域按压与柔性工具的柔性突起接触; 和灌封杂交。由于来自柔性工具的突起与其上的混合物和结构接触，形成密封件以防止灌封材料接触并覆盖由柔性工具由突起物覆盖的混合物的预定区域。

2. 发明授权

US5583462A Method and apparatus for multiplexing devices having long thermal time constants 失效
标题翻译：具有长热时间常数的装置的多路复用方法和装置
公开(公告)号：US5583462A
公开(公告)日：1996-12-10
申请号：US434128
申请日：1995-05-03
申请人： Eric Grasshoff
发明人： Eric Grasshoff
IPC分类号： G01N27/403 , G01N27/414 , H03K17/284 , H03K17/693 , H03H11/26 , G01N27/26 , G11C27/02
CPC分类号： H03K17/693 , G01N27/4148 , H03K17/284
摘要： A method and apparatus for rapidly measuring chemical properties of a solution using a plurality of devices having relatively long thermal time constants selectively coupled to a control means. Current I.sub.d flows through only one device at a time. A timing logic control circuit controls the timing of the drain switch and, if present, the reference switch. The output of the multiplexing circuit is sampled a precise amount of time after each device begins conducting current. The temperature at the sample time is a constant. The characteristics of the solution in which the device is immersed is the only variable in the operation of the device (i.e., I.sub.d, and V.sub.ds are held constant). By sampling the output a predetermined amount of time after the device has been turned on, the temperature rise is controlled. In this way, the effects of temperature rise due to conduction on the device are constant at each sample time and can be neglected, and the characteristics of the solution can be precisely determined without waiting for the temperature to stabilize.
摘要翻译：一种用于使用选择性地耦合到控制装置的具有相对长的热时间常数的多个装置来快速测量溶液的化学性质的方法和装置。电流Id一次只流过一个设备。定时逻辑控制电路控制漏极开关的定时，如果存在，则控制参考开关。在每个器件开始传导电流之后，复用电路的输出被采样精确的时间量。采样时间的温度是一个常数。器件浸入的解决方案的特征是器件工作的唯一变量（即Id，Vds保持不变）。通过在器件接通之后对输出进行采样预定量的时间，控制温度升高。以这种方式，由于器件导通引起的温度上升的影响在每个采样时间都是恒定的并且可以被忽略，并且可以在不等待温度稳定的情况下精确地确定溶液的特性。

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