Samsung Display Co., Ltd.

Dongwoo Fine-chem Co., Ltd.

Suckjun Lee

Jong-Hyun Choung

Hongsick Park

Seon-Il Kim

In-Bae Kim

Giyong Nam

Youngchul Park

Youngjin Yoon

Inseol Kuk

Inho Yu

An etchant includes, based on a total amount of the etchant, from about 0.5 to about 20 wt % of a persulfate, from about 0.01 to about 2 wt % of a fluorine compound, from about 1 to about 10 wt % of an inorganic acid, from about 0.5 to about 5 wt % of an azole compound, from about 0.1 to about 5 wt % of an electron-donating compound, from about 0.1 to about 5 wt % of a chlorine compound, from about 0.05 to about 3 wt % of a copper salt, from about 0.1 to about 10 wt % of an organic acid or an organic acid salt, and a remaining amount of water.

Etchant and method for manufacturing display device using the same

Growing community of inventors

Jeonju-si, South Korea

Suckjun Lee