Taiwan Semiconductor Manufacturing Comp. Ltd.

Chih Ping Wang

Jr-Jung Lin

Chih-Han Lin

Hung-Jui Kuo

Chao-Cheng Chen

Shih-Yao Lin

Hui-Jung Tsai

Chen-Yu Wu

Chi-Wei Yang

Pei-Hsiu Wu

Yun Ting Chou

Semiconductor device structures with a gate structure having different profiles at different portions of the gate structure may include a fin structure on a substrate, a source/drain structure on the fin structure, and a gate structure over the fin structure and along a sidewall of the fin. The source/drain structure is proximate the gate structure. The gate structure has a top portion having a first sidewall profile and a bottom portion having a second sidewall profile different from the first sidewall profile.

Gate structure with non-linear profile for transistors

A method includes forming isolation regions extending into a semiconductor substrate, wherein semiconductor strips are located between the isolation regions, and forming a dielectric dummy strip between the isolation regions, recessing the isolation regions. Some portions of the semiconductor strips protrude higher than top surfaces of the recessed isolation regions to form protruding semiconductor fins, and a portion of the dielectric dummy strip protrudes higher than the top surfaces of the recessed isolation regions to form a dielectric dummy fin. The method further includes etching the dielectric dummy fin so that a top width of the dielectric dummy fin is smaller than a bottom width of the dielectric dummy fin. A gate stack is formed on top surfaces and sidewalls of the protruding semiconductor fins and the dielectric dummy fin.

Dummy fin profile control to enlarge gate process window

Provided is a method of detecting photoresist scums and photoresist residues. A carrier is provided. The carrier has a photoresist layer with opening patterns therein. A plasma etching process is performed to the opening patterns of the photoresist layer. Charges are injected to the opening patterns of the photoresist layer. Whether a photoresist scum or residue is present in at least one of the opening patterns is detected.

Method of detecting photoresist scum, method of forming semiconductor package and photoresist scum detection apparatus

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Hsinchu, Taiwan

Chih Ping Wang