Also, as shown in 
In this case, the first conductive layer 450 may be electrically connected to a ground line.
Meanwhile, 
For example, the second conductive layer 451 (integrated with the fourth active layer 430) may extend under the contact hole 490, and the third conductive layer 480 may be electrically connected to the second conductive layer 451 through the contact hole 490. In this case, the third conductive layer 480 may serve as the gate electrode of the the third transistor T3 together with the second conductive layer 451.
Subsequently, as shown in 
In a panel including transistors having the above-described structure, the area of subpixels SP may be reduced, and thus it is possible to achieve high resolution.