Taiwan Semiconductor Manufacturing Comp. Ltd.

Yi-Tsang Hsieh

Cha-Hsin Chao

Yi-Wei Chiu

Chih-Teng Liao

Li-Te Hsu

Ying Ting Hsia

Yu-Hsi Tang

Yu-Chi Lin

Chih-Ching Cheng

Chih-Hao Chen

Chung Chuan Huang

Yu-Lun Ke

Che-En Tsai

Po-Lung Hung

A semiconductor manufacturing apparatus for performing a process is disclosed. An apparatus includes a chamber configured to receive a wafer for an etching process; a conductive focus ring disposed within the chamber and configured to focus an electric field to control an etch direction of the etching process; and an insulative cover ring disposed within the chamber, wherein the insulative cover ring is configured to modify the electric field, wherein the insulative cover ring has an inner annular insulative portion and outer annular insulative portion, and wherein a gap is defined between the inner annular insulative portion and the outer annular insulative portion.

Plasma processing apparatus and method

A plasma etching system generates a plasma above a wafer in a plasma etching chamber. The wafer is surrounded by a focus ring. The plasma etching system straightens a plasma sheath above the focus ring by generating a supplemental electric field above the focus ring.

Dry etcher uniformity control by tuning edge zone plasma sheath

A method for manufacturing a semiconductor structure includes disposing a wafer in a processing chamber, in which the wafer is laterally surrounded by a focus ring. A plasma is formed in the processing chamber to process the wafer. A thickness of the focus ring is detected. A plasma direction of the plasma over a peripheral region of the wafer is adjusted according to the thickness of the focus ring.

Plasma processing method for manufacturing semiconductor structure

In a method of controlling a plasma beam of a plasma etcher a flow rate controller of the plasma etcher is set to generate one or more flow rates of an etching gas corresponding to one or more plasma beams of the plasma etcher. The emitted light generated by plasma discharge corresponding to the one or more plasma beams of the plasma etcher is monitored. The flow rate controller is calibrated based on the one or more flow rates and a corresponding emitted light of the plasma discharge.

Small gas flow monitoring of dry etcher by OES signal

A method includes forming a bottom source/drain contact plug in a bottom inter-layer dielectric. The bottom source/drain contact plug is electrically coupled to a source/drain region of a transistor. The method further includes forming an inter-layer dielectric overlying the bottom source/drain contact plug. A source/drain contact opening is formed in the inter-layer dielectric, with the bottom source/drain contact plug exposed through the source/drain contact opening. A dielectric spacer layer is formed to have a first portion extending into the source/drain contact opening and a second portion over the inter-layer dielectric. An anisotropic etching is performed on the dielectric spacer layer, and a remaining vertical portion of the dielectric spacer layer forms a source/drain contact spacer. The remaining portion of the source/drain contact opening is filled to form an upper source/drain contact plug.

Self-aligned spacers and method forming same

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Hsinchu, Taiwan

Yi-Tsang Hsieh