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    • 48. 发明授权
    • Increasing an electrical resistance of a resistor by oxidation or nitridization
    • US07351639B2
    • 2008-04-01
    • US10753241
    • 2004-01-08
    • Arne W. BallantineDaniel C. EdelsteinAnthony K. Stamper
    • Arne W. BallantineDaniel C. EdelsteinAnthony K. Stamper
    • H01L21/20
    • C23C8/02C23C8/04C23C8/10C23C8/24C25D11/00C25D11/02C25D11/026H01C7/006H01C17/26H01L21/263H01L27/0802H01L29/8605Y10S257/904Y10S257/914
    • A method and structure for increasing an electrical resistance of a resistor that is within a semiconductor structure, by oxidizing or nitridizing a fraction of a surface layer of the resistor with oxygen/nitrogen (i.e., oxygen or nitrogen) particles, respectively. The semiconductor structure may include a semiconductor wafer, a semiconductor chip, and an integrated circuit. The method and structure comprises five embodiments. The first embodiment comprises heating an interior of a heating chamber that includes the oxygen/nitrogen particles as gaseous oxygen/nitrogen-comprising molecules (e.g., molecular oxygen/nitrogen). The second embodiment comprises heating the fraction of the surface layer by a beam of radiation (e.g., laser radiation), or a beam of particles, such that the semiconductor structure is within a chamber that includes the oxygen/particles as gaseous oxygen/nitrogen-comprising molecules (e.g., molecular oxygen/nitrogen). The third embodiment comprises: using a plasma chamber to generate plasma oxygen/nitrogen ions; and applying a DC voltage to the plasma oxygen/nitrogen ions to accelerate the plasma oxygen/nitrogen ions into the resistor such that the oxygen/nitrogen particles include the plasma oxygen/nitrogen ions. The fourth embodiment comprises using an anodization circuit to electrolytically generate oxygen/nitrogen ions in an electrolytic solution in which the resistor is immersed, wherein the oxygen/nitrogen particles include the electrolytically-generated oxygen/nitrogen ions. The fifth embodiment comprises immersing the semiconductor structure in a chemical solution which includes the oxygen/nitrogen particles, wherein the oxygen/nitrogen particles may include oxygen/nitrogen-comprising liquid molecules, oxygen/nitrogen ions, or an oxygen/nitrogen-comprising gas dissolved in the chemical solution under pressurization.