Patent ID: 8076845
Filing Date: 2011-12-13
Classification: H01L

Abstract:
1. A display apparatus comprising: a substrate; a thin-film transistor and a wiring with a resistance lower than a resistance of a first electrode provided on the substrate, the wiring extending from a terminal and being disposed along a side of a display region; a planarization film provided on the thin-film transistor and the wiring extending from the terminal; and a plurality of light-emitting devices provided on the planarization film to provide a display region, wherein, in the light-emitting device, a second electrode, a light-emitting layer, and a first electrode are stacked on the substrate in that order, wherein a plurality of first contact holes and a plurality of second contact holes are provided in the planarization film at a part outside the display region to connect the first electrode to the wiring extending from the terminal, and wherein the first contact holes and the second contact holes are disposed in parallel to each other along the wiring extending from the terminal, a distance between the second contact hole and the display region is longer than a distance between the first contact hole and the display region, and an opening area of the second contact hole is smaller than an opening area of the first contact hole so that a current density of the first contact hole is substantially equal to a current density of the second contact hole.