| 摘要 |
<p>PURPOSE:To improve the yield and to reduce the cost by realizing an active matrix display device having such structure that a line defect due to disconnection of a source bus line can be surely corrected. CONSTITUTION:Source bus line projecting parts 46, 46 are formed in two positions on both sides of a gate bus line 21 on a source bus line 23, and one end parts of first conductor pieces 47, 47 are put under their front ends with a gate insulating film 13 between them. Both end parts of a second conductor piece 45 are put on the other end parts of first conductor pieces 47, 47 with the gate insulating film 13 between them. The second conductor piece 45 is arranged across the gate bus line 21. A redundant structure is formed by this constitution. If a line defect is detected, areas 51, 52 corresponding to overlap parts between source bus line projecting parts 46, 46 and first conductor pieces 47, 47 and areas 53, 54 corresponding to overlap parts between first conductor pieces 47, 47 and the second conductor piece 45 are irradiated with laser light. Thus, conductors are short-circuited to form a by-pass line 100 on the side of the part where disconnection 90 occurs.</p> |
