Patent ID: 6347048
Filing Date: 2002-02-12
Classification: H01L,Y10S

Abstract:
A semiconductor memory device comprising:a memory cell which includes a first driver transistor, a second driver transistor, a first load transistor, a second load transistor, a first transfer transistor, and a second transfer transistor, wherein: the memory cell has first and second gate electrode layers, first and second drain-drain connecting layers, first and second drain-gate connecting layers, and a source contact layer; the first gate electrode layer includes a gate electrode of the first driver transistor and a gate electrode of the first load transistor; the second gate electrode layer includes a gate electrode of the second driver transistor and a gate electrode of the second load transistor; a source region of the first and second driver transistors is located in a region between the first and second gate electrode layers; the source contact layer is located in the region between the first and second gate electrode layers; the first and second drain-drain connecting layers are located higher than the first and second gate electrode layers; the first and second gate electrode layers are located between the first and second drain-drain connecting layers; the first drain-drain connecting layer connects a drain region of the first driver transistor to a drain region of the first load transistor; the second drain-drain connecting layer connects a drain region of the second driver transistor to a drain region of the second load transistor; the first and second drain-gate connecting layers are located higher than the first and second gate electrode layers; the first and second drain-gate connecting layers are located in a different layer from the first and second drain-drain connecting layers; the first drain-gate connecting layer connects the first drain-drain connecting layer to the second gate electrode layer; and the second drain-gate connecting layer connects the second drain-drain connecting layer to the first gate electrode layer.