Patent ID: 7663247
Filing Date: 2010-02-16
Classification: G11C,H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate including a rectangular shape having a first and a second long sides and a first and a second short sides; a memory cell array formed on the semiconductor substrate, including a rectangular shape having a third and a fourth long sides and a third and a fourth short sides, the third long side being adjacent to the first long side of the semiconductor substrate and the third short side being adjacent to the first short side of the semiconductor substrate; a sense amplifier string located along the fourth short side of the memory cell array; a first row decoder string located along the third long side of the memory cell array, the first row decoder string including a first and a second end portions, the first end portion being adjacent to the first short side of the semiconductor substrate; and a second row decoder string located along the fourth long side of the memory cell array, the second row decoder string including a third and a fourth end portions, the third end portion being adjacent to the first short side of the semiconductor substrate, the second row decoder string being located opposite of the first row decoder string with the memory cell array interposed between the first and second row decoder strings, wherein a distance between the first end portion of the first row decoder string and the first short side of the semiconductor substrate is longer than a distance between the third end portion of the second row decoder string and the first short side.