Multilayer external connection structure having third layer covering sidewalls of the first and second, made of reflective conductive material

摘要

The invention provides highly reliable wiring and connection terminals of an electro-optic device used as a transfiective liquid crystal device or the like. Since sidewalls and a part of an upper surface of a data line are covered with a reflection film, a central layer is not etched by an etchant when the reflection film is formed by patterning. In addition, since a transparent conductive film is connected to an upper layer of the data line via a contact hole, the resistance of a connection terminal can be decreased, and superior conduction can be obtained.