ACTIVE MATRIX SUBSTRATE, DISPLAY PANEL, AND DISPLAY DEVICE

摘要

In the present invention, a drain electrode (17) is provided with a lower layer drain electrode (17a) and an upper layer drain electrode (17b) layered so as to cover part of the upper surface of a semiconductor layer (14). The semiconductor layer (14), lower layer drain electrode (17a), and upper layer drain electrode (17b) are constituted in a stepped state, and in the parts constituted in the stepped state, the distance between the peripheral edge of the lower layer drain electrode (17a) and the peripheral edge of the upper layer drain electrode (17b) is greater than 0.4 µm and less than 1.5 µm.