Patent ID: 7833075
Filing Date: 2010-11-16
Classification: G02F,H01L

Abstract:
1. A method for forming a metal line, comprising: forming a first metal layer on a base substrate, the first metal layer comprising aluminum and/or aluminum alloy; forming a second metal layer on the first metal layer, the second metal layer comprising molybdenum and/or molybdenum alloy; forming a photoresist pattern having a line-shape on the second metal layer; etching the second metal layer with a first etching gas by using the photoresist pattern as a mask, the first etching gas comprising a mixture of a chlorine-containing gas and an oxygen gas; and etching the first metal layer with a second etching gas different from the first etching gas by using the photoresist pattern as a mask, the second etching gas comprising at least one of a mixture of a chlorine-containing gas and a nitrogen gas, or a mixture of a chlorine-containing gas and an argon gas.