Taiwan Semiconductor Manufacturing Comp. Ltd.

Richard Chu

Yuan-Chih Hsieh

Lan-Lin Chao

Martin Liu

Chia-Shiung Tsai

Chun-Wen Cheng

Ming-Tung Wu

Chia-Hua Chu

Chung-Hsien Lin

Mingo Liu

Jung-Huei Peng

Hsin-Ting Huang

Hung Hua Lin

Provided is a wafer level packaging. The packaging includes a first semiconductor wafer having a transistor device and a first bonding layer that includes a first material. The packaging includes a second semiconductor wafer having a second bonding layer that includes a second material different from the first material, one of the first and second materials being aluminum-based, and the other thereof being titanium-based. Wherein a portion of the second wafer is diffusively bonded to the first wafer through the first and second bonding layers.

Hermetic wafer level packaging

Provided is a wafer level packaging. The packaging includes a first semiconductor wafer having a transistor device and a first bonding layer that includes a first material. The packaging includes a second semiconductor wafer having a second bonding layer that includes a second material different from the first material, one of the first and second materials being aluminum -based, and the other thereof being titanium-based. Wherein a portion of the second wafer is diffusively bonded to the first wafer through the first and second bonding layers.

The present disclosure provides a method of bonding a plurality of substrates. In an embodiment, a first substrate includes a first bonding layer. The second substrate includes a second bonding layer. The first bonding layer includes silicon; the second bonding layer includes aluminum. The first substrate and the second substrate are bonded forming a bond region having an interface between the first bonding layer and the second bonding layer. A device having a bonding region between substrates is also provided. The bonding region includes an interface between a layer including silicon and a layer including aluminum.

Wafer level packaging bond

The present disclosure provides various embodiments of a via structure and method of manufacturing same. In an example, a via structure includes a via having via sidewall surfaces defined by a semiconductor substrate. The via sidewall surfaces have a first portion and a second portion. A conductive layer is disposed in the via on the first portion of the via sidewall surfaces, and a dielectric layer is disposed on the second portion of the via sidewall surfaces. The dielectric layer is disposed between the second portion of the via sidewall surfaces and the conductive layer. In an example, the dielectric layer is an oxide layer.

Semiconductor having a high aspect ratio via

The present disclosure provides various embodiments of a via structure and method of manufacturing same. In an example, a method for forming a via structure includes forming a via in a semiconductor substrate, wherein via sidewalls of the via are defined by the semiconductor substrate; forming a dielectric layer on the via sidewalls; removing the dielectric layer from a portion of the via sidewalls; and forming a conductive layer to fill the via, wherein the conductive layer is disposed over the dielectric layer and the portion of the via sidewalls. In an example, the dielectric layer is an oxide layer.

A semiconductor device includes a substrate wafer, a dielectric layer overlying the substrate wafer, a patterned conductor layer in the dielectric layer, and a first barrier layer overlying the conductor layer. A silicon top wafer is bonded to the dielectric layer. A via is formed through the top wafer and a portion of the dielectric layer to the first barrier layer. A sidewall dielectric layer is formed along inner walls of the via, adjacent the top wafer to a distance below an upper surface of the top wafer, forming a sidewall dielectric layer shoulder. A sidewall barrier layer is formed inward of the sidewall dielectric layer, lining the via from the first barrier layer to the upper surface of the top wafer. A conductive layer fills the via and a top barrier layer is formed on the conductive layer, the sidewall barrier layer, and the top wafer.

Growing community of inventors

Taipei, Taiwan

Richard Chu