Patent ID: 7274259
Filing Date: 2007-09-25
Classification: H03F

Abstract:
1. A layout structure of a semiconductor device forming a signal driver, driven to correspond to a voltage difference between a first and a second input signal, wherein the signal driver comprises: a first signal response unit responding to the first input signal received through a first input gate terminal; a second signal response unit responding to the second input signal received through a second input gate terminal; and a current source unit, for restricting currents provided to the first and second signal response units to respective source currents thereof, having a plurality of bias unit pairs, each bias unit pair having at least two bias units, wherein the layout structure of the semiconductor device forming the signal driver comprises: the two bias units being separately arranged on opposite sides of a predetermined imaginary centerline so as to reduce current mismatch occurring between the first and second signal response units; and the imaginary centerline being an imaginary line that is a set of points spaced apart by the same distances from opposite reference points of the corresponding first and second signal response units.