Patent ID: 8373255
Filing Date: 2013-02-12
Classification: H01L

Abstract:
1. A diode comprising: a P-type well formed in a semiconductor substrate; a first N-type impurity doping area formed in the P-type well; a second N-type impurity doping area formed in the P-type well; a first P-type impurity doping area formed in the P-type well, and parallel to and apart from the first N-type impurity doping area; a second P-type impurity doping area formed in the P-type well, and parallel to and apart from the second N-type impurity doping area; a first isolation area formed between the first N-type impurity doping area and the first P-type impurity doping area; a second isolation area formed between the second N-type impurity doping area and the second P-type impurity doping area; first contacts formed in the first N-type impurity doping area and the first P-type impurity doping area in a single row or a plurality of rows; and second contacts formed in the second P-type impurity doping area and the second N-type impurity doping area in a single row or a plurality of rows, wherein a distance between the second N-type impurity doping area and the second P-type impurity doping area is greater than a distance between the first N-type impurity doping area and the first P-type impurity doping area, and a contact pitch between the second contacts is greater than a contact pitch between the first contacts.