United Semiconductor (Xiamen) Co., Ltd.

Pao-Chung Lee

Shouguo Zhang

Xijun Guo

Yongbo Xu

Jinggang Li

A method of electro-chemical plating is disclosed. The catholyte is delivered to the cathode chamber. The catholyte is controlled at a first temperature before flowing into the cathode chamber. The anolyte is provided at room temperature. The temperature of the anolyte is lowered from the room temperature to a second temperature before delivering into the anode chamber. The second temperature is equal to or lower than the first temperature. The plating surface of the substrate is immersed in the electrolyte. The substrate is biased to a direct current (DC) voltage. The biased substrate attracts ions of the metal in the electrolyte toward the plating surface so as to electroplating the metal onto the substrate.

Growing community of inventors

Xiamen, China

Pao-Chung Lee