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    • 7. 发明授权
    • Liquid crystal display having wires made of molybdenum-tungsten alloy
and a method of manufacturing the same
    • 具有由钼 - 钨合金制成的导线的液晶显示器及其制造方法
    • US6130443A
    • 2000-10-10
    • US170100
    • 1998-10-13
    • Mun-Pyo HongYoung-Jae Tak
    • Mun-Pyo HongYoung-Jae Tak
    • G02F1/1343G02F1/136G02F1/1362H01L21/3213H01L29/45H01L29/00
    • G02F1/136286H01L21/32134H01L27/124H01L29/458G02F2001/13629
    • A liquid crystal display has wires made of aluminum alloy layer, and two molybdenum-tungsten alloy layers MoW located on/under the aluminum alloy layer, respectively. To form a wire, the first molybdenum-tungsten alloy layer, the aluminum alloy layer, and the second molybdenum-tungsten alloy layer are sequentially deposited. The molybdenum-tungsten alloy layer has different etch rates for one etchant, depending on the deposition temperature and tungsten content ratio. Particularly, since the molybdenum-tungsten alloy layer has an etch rate similar to that of an aluminum layer and aluminum alloy layer for an aluminum etchant CH.sub.3 COOH/HNO.sub.3 /H.sub.3 PO.sub.4 /H.sub.2 O. Therefore, the first molybdenum-tungsten alloy layer having a lower etch rate than that of the aluminum layer or the aluminum alloy layer, and the second molybdenum-tungsten alloy layer having a higher etch rate than that of the aluminum layer or the aluminum alloy layer may be formed by adjusting deposition temperature and tungsten content ratio. Accordingly, the wires have a gradually sloped taper angle.
    • 液晶显示器具有由铝合金层制成的线和分别位于铝合金层之下的两个钼 - 钨合金层MoW。 为了形成导线,顺序地沉积第一钼 - 钨合金层,铝合金层和第二钼 - 钨合金层。 根据沉积温度和钨含量比,钼 - 钨合金层对于一种蚀刻剂具有不同的蚀刻速率。 特别地,由于钼 - 钨合金层的蚀刻速率与用于铝蚀刻剂CH 3 COOH / HNO 3 / H 3 PO 4 / H 2 O的铝层和铝合金层相同。 因此,具有比铝层或铝合金层蚀刻速率低的蚀刻速率的第一钼 - 钨合金层和比铝层或铝合金层蚀刻速率高的蚀刻速率的第二钼 - 钨合金层 可以通过调节沉积温度和钨含量比来形成。 因此,电线具有逐渐倾斜的锥角。