发明申请
US20080138924A1 METHOD OF FABRICATING ELECTRIC FIELD SENSOR HAVING ELECTRIC FIELD SHIELD 失效
制造电场感应电场传感器的方法

METHOD OF FABRICATING ELECTRIC FIELD SENSOR HAVING ELECTRIC FIELD SHIELD
摘要:
A method of manufacturing an electric field sensor having an electric field shield. The method includes providing a substrate doped with a first impurity; forming a resistive tip having a resistance region doped with a low concentration of a second impurity at an apex of a protruding portion of the substrate, and first and second semiconductor electrode regions doped with a high concentration of the second impurity on both slopes of the protruding portion with the resistive region therebetween, wherein the second impurity has a polarity opposite to that of the first impurity; forming a dielectric layer on the resistive tip; forming a mask having a high aspect ratio on the dielectric layer; depositing a metal layer on the dielectric layer; and exposing the dielectric layer formed on the resistance region through the metal layer by removing the mask.
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