One-time programmable memory array and manufacturing method thereof

Abstract

The present application provides an anti-fuse one-time programmable (OTP) memory array and a manufacturing method of the anti-fuse one-time programmable (OTP) memory array. The memory array includes: active areas; pairs of programming word lines and read word lines; and dummy word lines. The active areas extend along a first direction in a semiconductor substrate, and are separately arranged along a second direction. The programming word lines, the read word lines and the dummy word lines extend along the second direction over the semiconductor substrate. A region in which a pair of programming word line and read word line are intersected with one of the active areas defines a unit cell in the memory array. The dummy word lines respectively lie between adjacent pairs of programming word lines and read word lines. A region in which one of the dummy word lines is intersected with one of the active areas defines an isolation transistor.