Patent ID: 7582537
Filing Date: 2009-09-01
Classification: H01L

Abstract:
1. A zener diode fabricating method comprising: sequentially forming an insulation films and mask layers on top and bottom surfaces of a substrate having a first polarity; sequentially etching part of the mask layer and the insulation film on the top surface of the substrate to form a pair of openings through which the substrate is exposed; implementing a diffusion process by introducing an impurity having a second polarity opposite to that of the first polarity into the top surface of the substrate to form mutually spaced diffusion layers having the second polarity at substrate regions exposed through the pair of openings; removing the mask layer on the top surface of the substrate to expose the insulation film, the mutually spaced diffusion layers exposed through the openings of the insulation film; and forming a pair of electrode lines each electrically connected to a respective one of the exposed diffusion layers.