Nan Ya Technology Corporation

Hung-Mo Wu

Ying-Cheng Chuang

Chao-Wen Lay

Chung-Hsin Lin

Ping-Heng Wu

Shing-Yih Shih

Mao-Ying Wang

A method of forming a semiconductor structure includes the following steps. A dielectric layer is formed over a conductive line. A photoresist layer is formed over the dielectric layer. The photoresist layer is patterned to form a mask feature and an opening is defined by the mask feature. The opening has a bottom portion and a top portion communicated to the bottom portion, and the top portion is wider than the bottom portion. The dielectric layer is etched to form a via hole in the dielectric layer using the mask feature as an etch mask, such that the via hole has a bottom portion and a tapered portion over the bottom portion. The conductive material is filled in the via hole to form a conductive via.

Semiconductor structure and fabrication method thereof

The invention provides a semiconductor device including a substrate, a dielectric layer, a dummy bonding pad, a bonding pad, a redistribution layer, and a metal interconnect. The substrate includes a non-device region and a device region. The dielectric layer is on the non-device region and the device region. The dummy bonding pad is on the dielectric layer of the non-device region. The metal interconnect is in the dielectric layer of the non-device region and connected to the dummy bonding pad. The bonding pad is on the dielectric layer of the device region. The buffer layer is between the bonding pad and the dielectric layer. The buffer layer includes metal, metal nitride, or a combination thereof. The redistribution layer is on the dielectric layer and connects the dummy bonding pad and the bonding pad.

Method of fabricating semiconductor device having voids between top metal layers of metal interconnects

Semiconductor device having voids between top metal layers of metal interconnects

Growing community of inventors

Taipei, Taiwan

Hung-Mo Wu