Patent ID: 11957015
Assignee: SHARP KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A display device comprising:
a base substrate;
a thin film transistor (TFT) layer provided on the base substrate;
a plurality of light-emitting elements which are provided on the TFT layer, and in which a plurality of first electrodes, a plurality of light-emitting layers, and a second electrode common to the plurality of first electrodes are layered in sequence to form a display region;
a sealing film which is provided to cover the plurality of light-emitting elements, and in which a first inorganic insulating film, an organic film, and a second inorganic insulating film are layered in sequence;
a dam wall that is provided in a frame shape in a frame region around the display region, that surrounds the display region and overlaps with a circumferential end portion of the organic film;
a terminal portion which is provided in an end portion of the frame region in such a manner as to extend in one direction, and in which a plurality of terminals are arranged;
a plurality of display wiring lines in which display wiring lines extend parallel to each other in the display region, each of the plurality of display wiring lines including a first metal layer, a second metal layer, and a third metal layer that are layered in sequence, and the third metal layer is provided to cover a side surface of the first metal layer, and a side surface and an upper face of the second metal layer; and
a plurality of lead wiring lines that are provided in the frame region to intersect with the dam wall, lead wiring lines in the plurality of lead wiring lines extending parallel to each other, wherein each of the plurality of lead wiring lines:
is formed of a same material and in a same layer as each of the plurality of display wiring lines,
is electrically connected to a corresponding one of the plurality of display wiring lines on a display region side, and
is electrically connected to a corresponding one of the plurality of terminals on a terminal portion side, and

wherein a plurality of source lines and a plurality of power source lines are provided as the plurality of display wiring lines,
the third metal layer is provided to cover the side surface of the first metal layer, and the side surface and the upper face of the second metal layer in each of the plurality of lead wiring lines,
a bending portion is provided to extend in one direction between the display region and the terminal portion,
the plurality of lead wiring lines are provided to intersect with the bending portion,
in each of the plurality of lead wiring lines in the bending portion, a plurality of openings each passing through the first metal layer and the second metal layer is provided in the first metal layer and the second metal layer, and the third metal layer is provided to cover the plurality of openings, and
a thickness of the second metal layer is greater than each of a thickness of the first metal layer and a thickness of the third metal layer.