Taiwan Semiconductor Manufacturing Comp. Ltd.

Huey-Chi Chu

Wen-Chuan Chiang

Kuo-Chi Tu

Wei-Min Tseng

Chun-Yao Chen

Chien-Chung Wang

Shih-Guo Shen

Chen-Jong Wang

Kuo-Ji Chen

Ming-Hsiang Song

Chia-Shiung Tsai

Kuo-Cheng Ching

Cheng-Yuan Tsai

Hsing-Lien Lin

Tien-Lu Lin

Hai-Dang Trinh

Kuo-Ching Huang

Hsiao-Hui Tseng

Chung-Wei Chang

Wen-Cheng Chen

Tsung-Hsun Huang

A semiconductor structure and a method for forming the same are provided. The method for manufacturing a semiconductor structure includes forming a bottom electrode layer over a substrate and forming a first passivation layer over the bottom electrode layer by a first atomic layer deposition process. The method for manufacturing a semiconductor structure further includes forming a dielectric layer over the first passivation layer by a second atomic layer deposition process and forming a second passivation layer over the dielectric layer by a third atomic layer deposition process. The method for manufacturing a semiconductor structure further includes forming a top electrode layer over the second passivation layer.

Metal-insulator-metal structure and method for forming the same

A metal insulator metal (MIM) capacitor includes a top electrode, a first via contacting a first surface of the top electrode, a bottom electrode, a second via contacting a second surface of the bottom electrode, and an insulator between the top electrode and the bottom electrode. One of the top and the bottom electrodes includes a first part and a second part. The first part has a first edge and a second edge opposing the first edge. The second part shares the second edge with the first part. At least a portion of the first edge contacts the respective via, and a first one of the first and the second edges is longer than a second one of the first and the second edges.

Metal-insulator-metal capacitor with current leakage protection

The present disclosure relates to an integrated chip having a MIM (metal-insulator-metal) capacitor and an associated method of formation. In some embodiments, the integrated chip has a MIM capacitor disposed within a capacitor inter-level dielectric (ILD) layer. An under-metal layer is disposed below the capacitor ILD layer and includes one or more metal structures located under the MIM capacitor. A plurality of vias vertically extend through the capacitor ILD layer and the MIM capacitor. The plurality of vias provide for an electrical connection to the MIM capacitor and to the under-metal layer. By using the plurality of vias to provide for vertical connections to the MIM capacitor and to the under-metal layer, the integrated chip does not use vias that are specifically designated for the MIM capacitor, thereby decreasing the complexity of the integrated chip fabrication.

MIM capacitor structure

The present disclosure relates to a MIM (metal-insulator-metal) capacitor, and an associated method of formation. In some embodiments, the MIM capacitor includes a first electrode having a capacitor bottom metal layer disposed over a dielectric buffer layer located over an under-metal layer. A capacitor dielectric layer is disposed onto and in direct contact with the capacitor bottom metal layer. A second electrode having a top capacitor metal layer is disposed onto and in direct contact with the capacitor dielectric layer. A capacitor inter-level dielectric (ILD) layer is disposed over the top capacitor metal layer, and a substantially planar etch stop layer disposed over the capacitor ILD layer. The capacitor's simple stack provides for a small step size that prevents topography related issues, while the dielectric buffer layer removes design restrictions on the lower metal layer.

The present disclosure relates to a MIM capacitor, and an associated method of formation. In some embodiments, the MIM capacitor has a first electrode having a bottom capacitor metal layer disposed over a semiconductor substrate. A second electrode having a middle capacitor metal layer overlies the bottom capacitor metal layer. A third electrode having a top capacitor metal layer has a stepped structure is laterally and vertically separated from the middle capacitor metal layer by a capacitor dielectric layer continuously extends from a first position between the bottom capacitor metal layer and the middle capacitor metal layer, to a second position between the middle capacitor metal layer and the top capacitor metal layer. The capacitor dielectric layer allows for the MIM capacitor to have a structure that improves fabrication of the capacitor.

Methods and apparatus are disclosed for manufacturing metal-insulator-metal (MIM) capacitors. The MIM capacitors may comprise an electrode, which may be a top or bottom electrode, which has a bottle neck. The MIM capacitors may comprise an electrode, which may be a top or bottom electrode, in contact with a sidewall of a via. The sidewall contact or the bottle neck of the electrode may burn out to form a high impedance path when the leakage current exceeds a specification, while the sidewall contact or the bottle neck of the electrode has no impact for normal MIM operations. The MIM capacitors may be used as decoupling capacitors.

An integrated circuit includes a circuit module having a plurality of active components coupled between a pair of supply nodes, and a capacitive decoupling module coupled to the circuit module. The capacitive decoupling module includes a plurality of metal-insulator-metal (MiM) capacitors coupled in series between the pair of supply nodes, wherein a voltage between the supply nodes is divided across the plurality of MiM capacitors, thereby reducing voltage stress on the capacitors.

Semiconductor device with decoupling capacitor design

A method for fabricating a metal-insulator-metal capacitor in an embedded DRAM process is described. A plurality of contact plugs are provided through an insulating layer to semiconductor device structures in a substrate wherein the contact plugs are formed in a logic area of the substrate and in a memory area of the substrate and providing node contact plugs to node contact regions within the substrate in the memory area. Thereafter, capacitors are fabricated in a twisted trench in a self-aligned copper process.

Embedded DRAM for metal-insulator-metal (MIM) capacitor structure

A memory cell comprising a capacitor having a dielectric layer interposing first and second vertically disposed electrodes, an insulating lining located over the capacitor, and a transistor gate extension passing over the capacitor. A spacer isolates an end of one of the capacitor electrodes from the transistor gate extension. In one embodiment, the spacer includes a first non-planar profile configured to engage a second non-planar profile comprising ends of the one of the capacitor electrodes and the insulating lining.

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Hsin-Chu, Taiwan

Huey-Chi Chu