Signal distribution circuit, signal distribution device, and display device

A signal distribution device, comprising a plurality of signal distribution circuits,

• each of the plurality of signal distribution circuits including:
• a single input terminal for receiving an input signal;
• a plurality of switching elements connected to the input terminal, each of the plurality of switching elements being composed of a thin film transistor;
• supply lines for supplying, to the plurality of switching elements, the input signal fed to the input terminal;
• and
• a plurality of distribution lines connected respectively to a plurality of output terminals via the plurality of switching elements,
• the plurality of signal distribution circuits each distributing the input signal to the plurality of output terminals via the plurality of switching elements respectively,
• wherein
• each of the plurality of switching elements includes:
• a gate electrode;
• a first electrode connected to the input terminal via a corresponding one of the supply lines;
• and
• a second electrode connected to a corresponding one of the plurality of output terminals via a corresponding one of the plurality of distribution lines,
• the plurality of signal distribution circuits are each provided with a plurality of control lines respectively connected to, or functioning as, the gate electrodes of the plurality of switching elements, each of the plurality of control lines being for receiving a selection signal for switching on/off a corresponding one of the plurality of switching elements,
• the corresponding one of the supply lines and at least one of the plurality of distribution lines each have an extension section which extends in an extending direction of a corresponding one of the plurality of control lines,
• the extension sections are each formed at positions which do not overlap edge portions of the corresponding one of the plurality of control lines in the extending direction thereof,
• the plurality of switching elements are provided on one of the plurality of control lines in an extending direction of the one of the plurality of control lines,
• the adjacent switching elements arranged in the extending direction have a gap section therebetween,
• the one of the plurality of control lines has, at least in the gap section, a slit or slits which extend in the extending direction and a grating section which extends in the extending direction and is grated by the slit or slits, and
• the extension sections are each formed at positions which do not overlap edge portions of the grating section in an extending direction of the grating section.