Mitsubishi Denki Kabushiki Kaisha

Takahiro Nagamine

Akira Maeda

Shigeru Matsuno

Masato Koyama

Shoji Miyashita

Takanori Sone

Yasumichi Hatanaka

Susumu Arai

Takeyuki Maegawa

Takuo Ozawa

A metal electrode is formed on a substrate. The metal electrode includes a first layer, a second layer, and a third layer lying, from an outermost surface of the metal electrode toward the substrate, in this order. The first layer contains tin as a principal constituent and the second layer contains a metallic element which produces an eutectic reaction with tin, wherein the melting point of the first layer is higher than the melting point of the second layer. The third layer is an underlying metallic layer for the first and second layers.

Metal electrode and bonding method using the metal electrode

Growing community of inventors

Tokyo, Japan

Takahiro Nagamine