Abstract:
Methods of fabricating semiconductor devices having patterns with different feature sizes are provided. An example method includes: etching a first film layer below a patterned mask to form first and second features on a second film layer, forming respective first and second spacers adjacent to sidewalls of the first and second features on the second film layer, removing the first and second features to expose respective first and second portion of the second film layer, the second portion having a larger CD than the first portion, controlling an etching process such that the first portion is etched through and the second portion is protected from etching by a protective film formed during the etching process, and patterning a thin film masked by the first spacer, the second spacer, and the second portion to form smaller features and larger features in respective first and second regions of the thin film.
Abstract:
A method for fabricating a semiconductor device includes: forming a first trench and a wider second trench in a substrate and a material layer formed thereon, forming a flowable isolation material covering the material layer and filling in the first and second trenches, removing a portion of the flowable isolation material in the second trench so that the thickness of the remaining flowable isolation material on the sidewall of the second trench is 200 Å to 1000 Å, and forming a non-flowable isolation material on the flowable isolation material.
Abstract:
Provided are improved semiconductor memory devices and methods for manufacturing such semiconductor memory devices. A method may incorporate the patterning of the array and periphery regions in self-aligned quadruple patterning and provide semiconductor devices resulting from the combined patterning.
Abstract:
A one-time programmable memory array includes a first row conductor extending in a first row direction and disposed at a first elevation, a second row conductor extending in a second row direction and disposed at a second elevation and a column conductor extending in a column direction and disposed adjacent to the first row conductor and adjacent to the second row conductor. The array also includes a dielectric layer covering at least a portion of the column conductor, a fuse link coupled between the dielectric layer on the column conductor and the second row conductor.