| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a matrix array substrate which does not incure the reduction of the aperture ratios of a planar display device even when a signal line 1 has a redundant wiring structure in an matrix array substrate for the planar display device. SOLUTION: A signal line 1 is constituted by allowing a low resistance conductive layer 13 which is produced simultaneously with a drain electrode 22 and an auxiliary electrode layer 14 which is produced simultaneously with a pixel electrode 3 are conducted with each other through a contact hole 15 penetrating the insulating film existing between these layers. In the signal line 1 of such a redundant wiring structure, a contact hole forming part 11 whose width is wider than that of the other part 12 of the signal line 1 is provided at the intersection part with a scanning line 4.</p> |
