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    • 3. 发明授权
    • Multi-layered metal silicide resistor for Si Ic's
    • Si Ic的多层金属硅化物电阻
    • US06359339B1
    • 2002-03-19
    • US09480224
    • 2000-01-10
    • Richard W. GregorIsik C. KizilyalliSailesh M. MerchantJaseph R. RadosevichPradip K. Roy
    • Richard W. GregorIsik C. KizilyalliSailesh M. MerchantJaseph R. RadosevichPradip K. Roy
    • H01L2348
    • H01L28/24H01L27/0802
    • The present invention provides a unique a resistor formed on a semiconductor substrate. The resistor preferably comprises a first resistor layer that includes a first metal silicide, such as tungsten silicide, and nitrogen and that is formed on the substrate. The first layer has a first thickness and a concentration of nitrogen incorporated therein. The nitrogen concentration may be varied to obtain a desired resistive value of the resistor. Thus, depending on the concentration of nitrogen, a wide range of resistive values may be achieved. The resistor further comprises a second resistor layer with a second thickness that includes a second metal silicide and that is formed on the first resistor layer. Thus, the present invention provides a metal silicide-based resistor having nitrogen incorporated therein which allows the resistance of the resistor to be tailored to specific electrical applications. Yet at the same time, the resistor is far less susceptible to temperature and voltage variation than conventional diffused resistors and, thereby, provides a more precise resistor.
    • 本发明提供了形成在半导体衬底上的独特的电阻器。 电阻器优选地包括第一电阻层,该第一电阻层包括第一金属硅化物,例如硅化钨和氮,并且形成在衬底上。 第一层具有掺入其中的第一厚度和氮浓度。 可以改变氮浓度以获得电阻器的期望电阻值。 因此,取决于氮的浓度,可以实现宽范围的电阻值。 电阻器还包括具有第二厚度的第二电阻层,该第二电阻层包括第二金属硅化物,并形成在第一电阻层上。 因此,本发明提供一种其中结合有氮化物的金属硅化物基电阻器,其允许将电阻器的电阻定制为特定的电气应用。 然而与此同时,电阻器比常规扩散电阻器更不易受温度和电压变化的影响,从而提供更精确的电阻器。