| 摘要 |
To enable freely choose a bus-line to be monitored without such a problem that the bus-line is made corroded. A liquid crystal display device comprising: a substrate ( 10 ) in which a display area ( 10 d) is delimited; and two series of bus-lines ( 4, 5 ) supported by the substrate, one ends of the bus-lines being located in proximity to one side of the display area, another ends of the bus-lines being located in proximity to another side of the display area which is opposite to the one side of the display area, the two series of bus-lines ( 4, 5 ) being arranged to extend over the display area in such a manner that the one series of bus-lines ( 4 ) is orthogonal to the other series of bus-lines ( 5 ). The display device further comprises: a conductive auxiliary wiring pattern ( 6 h, 6 v) which extends in such a manner that the pattern crosses another end(s) of the bus-line(s), which is/are all to be monitored, of the one series of bus-lines ( 4 or 5 ) via an electrically insulating layer ( 7 ), and which is led out to a predetermined location on a side of one ends of the bus-lines ( 5 or 4 ) of the other series to form a coupling portion ( 6 p) capable of electrically connecting to the exterior.
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