Patent ID: 8420460
Filing Date: 2013-04-16
Classification: H01L

Abstract:
1. A method, comprising: forming a high-leakage dielectric on an active region of a device; forming a resist completely over and in physical contact with a portion of a top surface of the high-leakage dielectric to protect it during etching; forming a low-leakage dielectric on and in physical contact with a portion of the active region of the device, and on and in physical contact with an entire top surface of the portion of the high-leakage dielectric that was not etched; removing the low-leakage dielectric from the entire top surface of the portion of the high-leakage dielectric; and forming a gate electrode over the non-etched high-leakage dielectric and the low-leakage dielectric, after the forming of the low-leakage dielectric, wherein the low-leakage dielectric is formed thicker than the high-leakage dielectric.