DISPLAY DEVICE
According to one embodiment, a display device includes a display area which includes a plurality of subpixels, a plurality of lower electrodes provided in the subpixels, respectively, a plurality of organic layers which cover the lower electrodes, respectively, and emit light based on applied voltage, and a common electrode which covers the organic layers and overlaps the display area. Further, the common electrode has a slit in which at least an end reaches an outer edge of the common electrode.
1 . A display device comprising:
a display area which includes a plurality of subpixels;
a plurality of lower electrodes provided in the subpixels, respectively;
a plurality of organic layers which cover the lower electrodes, respectively, and emit light based on applied voltage; and
a common electrode which covers the organic layers and overlaps the display area, wherein
the common electrode has a slit in which at least an end reaches an outer edge of the common electrode.
2 . The display device of claim 1 , wherein
both ends of the slit reach the outer edge of the common electrode.
3 . The display device of claim 1 , wherein
an end of the slit reaches the outer edge of the common electrode, and the other end does not reach the outer edge.
4 . The display device of claim 2 , wherein
the common electrode has a plurality of segments which are divided by the slit, and
the segments are electrically connected to each other.
5 . The display device of claim 4 , further comprising a power supply line provided in a surrounding area around the display area, wherein
each of the segments has a first end portion and a second end portion in an extension direction of the slit, and
the first end portion of each of the segments is connected to the power supply line.
6 . The display device of claim 4 , further comprising a high-resistive portion which has a resistance higher than the segments, is provided in a surrounding area around the display area and connects the segments to each other.
7 . The display device of claim 4 , wherein
the segments are arranged in an arrangement direction intersecting with an extension direction of the slit, and
at least two of the segments have widths which are different from each other in the arrangement direction.
8 . The display device of claim 7 , wherein
each of the display area and the common electrode has a planar shape in which a width in the extension direction decreases with increasing distance from a center in the arrangement direction,
the segments include a first segment and a second segment which is closer to the center than the first segment, and
a width of the first segment in the arrangement direction is greater than a width of the second segment in the arrangement direction.
9 . The display device of claim 8 , wherein
the planar shape of each of the display area and the common electrode is circular.
10 . The display device of claim 7 , further comprising:
a power supply line provided in a surrounding area around the display area and connected to each of the segments;
a terminal portion including a terminal for applying common voltage; and
a connection portion which connects the terminal portion and the power supply line, wherein
the segments include a first segment and a second segment having a shorter distance from the connection portion along the power supply line than the first segment, and
a width of the first segment in the arrangement direction is less than a width of the second segment in the arrangement direction.
11 . The display device of claim 7 , wherein
a difference between a number of pixels overlapping one of adjacent two segments of the plurality of segments and a number of pixels overlapping the other segment is within 10%.
12 . The display device of claim 7 , wherein
a difference between a number of pixels overlapping a segment having a greatest area among the plurality of segments and a number of pixels overlapping a segment having a least area among the plurality of segments is within 30%.
13 . The display device of claim 1 , further comprising:
a plurality of pixel circuits connected to the lower electrodes, respectively;
a plurality of scanning lines which supply a scanning signal to the pixel circuits; and
a plurality of signal lines which supply a video signal to the pixel circuits, wherein
the slit extends parallel to the signal lines.
14 . The display device of claim 1 , further comprising:
a plurality of pixel circuits connected to the lower electrodes, respectively;
a plurality of scanning lines which supply a scanning signal to the pixel circuits; and
a plurality of signal lines which supply a video signal to the pixel circuits, wherein
the slit extends parallel to the scanning lines.
15 . The display device of claim 1 , wherein
the common electrode includes:
a conductive partition provided in boundaries of the subpixels; and
a plurality of upper electrodes which cover the organic layers, respectively, and are in contact with the partition.
16 . The display device of claim 15 , wherein
the partition includes:
a conductive lower portion; and
an upper portion provided on the lower portion and protruding from a side surface of the lower portion, and
the upper electrodes are in contact with the side surface of the lower portion.