MATRIX ARRAY SUBSTRATE AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To prevent a short circuit between a signal line and a scan line in a matrix array substrate for a planar display device including the signal lines each having a redundant line structure comprising an upper layer line and a lower layer line. SOLUTION: In an intersection part 7 of a signal line 6 and a scan line 11 in this matrix array substrate, a signal line lower layer line 51 is set to be sufficiently broad to absorb unevenness in an outline position of a signal line upper layer line 31. Accordingly, the signal line upper layer line 51 does not protrude out of a range of the signal line lower layer line 31 in the intersection part 7 so as not to cause a short circuit between the signal line upper layer line 51 and the scan line 11 even if a pinhole occurs at a position along the signal line 6 in an insulation film covering the scan line 11.