Patent ID: 6165849
Filing Date: 2000-12-26
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, which method comprising:forming a first mask on a main surface of a semiconductor substrate exposing a portion of a logic core region and a portion of an input/output (I/O) region;ion implanting nitrogen into the surface of the semiconductor substrate in the logic core region; andforming a first oxide layer on the nitrogen implanted surface portion of the semiconductor substrate in the logic core region and a second oxide layer on the input/output (I/O) portion of the semiconductor substrate, the second oxide layer having a thickness greater than that of the first oxide layer,the method further comprising forming a pad oxide layer on the surface of the semiconductor substrate before forming the first mask, forming the pad oxide layer comprising forming the pad oxide layer at a thickness of about 5 .ANG. to about 10 .ANG..