Patent ID: 6929999

Claim:
A method of manufacturing a semiconductor, the method comprising: forming gate lines on a semiconductor substrate; forming a first insulating layer between the gate lines; forming first contact pads and second contact pads in the first insulating layer and between the gate lines, the first and second contact pads a surface of the semiconductor substrate; forming a second insulating layer overlying the first and second contact pads; forming bit lines on the second insulating layer, the bit lines electrically connected to the second contact pads and extending across the gate lines; forming a third insulating layer overlying the bit lines; and forming band-type openings by selectively etching a portion of the third insulating layer, wherein the band-type openings extend in a lengthwise direction of the gate lines to expose the first contact pads, and wherein the band-type openings have portions that protrude in a lengthwise direction of the bit lines.