Patent ID: 8835928

Claim:
A semiconductor device, comprising: an insulating substrate; a plurality of source lines provided on the insulating substrate; a thin film transistor electrically connected to each of the plurality of source lines; a pixel electrode electrically connected to the thin film transistor; and a diode element that electrically connects two source lines among the plurality of source lines; wherein: a semiconductor layer of the diode element includes a first region, a second region and a channel region located between the first region and the second region; a connection region in which the source lines and the diode element are connected to each other includes: a first electrode formed of a conductive film which is the same as that of a gate electrode of the thin film transistor; a second electrode formed of a conductive film which is the same as that of the source lines; and a third electrode and a fourth electrode formed of a conductive film which is the same as that of the pixel electrode; a part of each source line is a source electrode of the thin film transistor, and the second electrode and the source lines are formed separately from each other; the first electrode and the second electrode are electrically connected to each other via the third electrode; and the first electrode and the corresponding source line are electrically connected to each other via the fourth electrode.