Micron Technology Incorporated

Sahn D Tang

Gordon A Haller

Paul Grisham

A method of forming a field effect transistor includes forming trench isolation material within a semiconductor substrate and on opposing sides of a semiconductor material channel region along a length of the channel region. The trench isolation material is formed to comprise opposing insulative projections extending toward one another partially under the channel region along the channel length and with semiconductor material being received over the projections. The trench isolation material is etched to expose opposing sides of the semiconductor material along the channel length. The exposed opposing sides of the semiconductor material are etched along the channel length to form a channel fin projecting upwardly relative to the projections. A gate is formed over a top and opposing sides of the fin along the channel length. Other methods and structures are disclosed.

Methods of forming field effect transistors, pluralities of field effect transistors, and DRAM circuitry comprising a plurality of individual memory cells

There is provided fin structures and methods for fabricating fin structures. More specifically, fin structures are formed in a substrate. The fin structures may include two fins separated by a channel, wherein the fins may be employed as fins of a field effect transistor. The fin structures are formed below the upper surface of the substrate, and may be formed without utilizing a photolithographic mask to etch the fins.

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Boise, ID, United States of America

Sahn D Tang