Taiwan Semiconductor Manufacturing Comp. Ltd.

Ming-Ho Lin

Chun-Heng Chen

Chi On Chui

Cheng-I Lin

Xiong-Fei Yu

Chi-On Chui

Yung-Cheng Lu

A method of forming a semiconductor device includes forming a first layer on a semiconductor fin; forming a mask on the first layer, the mask being thicker on a top of the semiconductor fin than along a sidewall of the semiconductor fin. The first layer is thinned along the sidewall of the semiconductor fin using the mask. A second layer is formed on the semiconductor fin, the second layer covering the mask and the first layer. A dummy gate layer is formed on the semiconductor fin and patterned to expose a top surface of the semiconductor fin.

Dielectric layer on semiconductor device and method of forming the same

A method includes forming a fin protruding over a substrate; forming a conformal oxide layer over an upper surface and along sidewalls of the fin; performing an anisotropic oxide deposition or an anisotropic plasma treatment to form a non-conformal oxide layer over the upper surface and along the sidewalls of the fin; and forming a gate electrode over the fin, the conformal oxide layer and the non-conformal oxide layer being between the fin and the gate electrode.

Non-conformal oxide liner and manufacturing methods thereof

A method includes forming a protruding structure, and forming a non-conformal film on the protruding structure using an Atomic Layer Deposition (ALD) process. The non-conformal film includes a top portion directly over the protruding structure, and a sidewall portion on a sidewall of the protruding structure. The top portion has a first thickness, and the sidewall portion has a second thickness smaller than the first thickness.

Non-conformal capping layer and method forming same

A semiconductor device includes a semiconductor substrate and a first dielectric layer. The semiconductor substrate includes at least one fin. The first dielectric layer is disposed on the at least one fin. A thickness of the first dielectric layer located on a top surface of the at least one fin is greater than a thickness of the first dielectric layer located on a sidewall of the at least one fin.

Semiconductor device

Provided are a deposition method, a semiconductor device and a method of fabricating the same. The semiconductor device includes a substrate and a dielectric structure. The substrate includes at least one fin thereon. The dielectric structure covers the at least one fin. A thickness of the dielectric structure located on a top surface of the at least one fin is greater than a thickness of the dielectric structure located on a sidewall of the at least one fin. The dielectric structure includes a first dielectric layer and a second dielectric layer. The first dielectric layer is conformally disposed on the at least one fin. The second dielectric layer is disposed on the first dielectric layer over the top surface of the at least one fin. A thickness of the second dielectric layer is greater than a thickness of the first dielectric layer.

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Taipei, Taiwan

Ming-Ho Lin