Patent ID: 8482010

Claim:
An Electro Luminescence (EL) display panel, comprising: an EL unit; and a thin film semiconductor configured to control luminescence at said EL unit, wherein said EL unit includes: an anode electrode, a cathode electrode, and a light-emitting layer interposed between said anode electrode and said cathode electrode, said thin film semiconductor includes: a substrate; a gate electrode above said substrate; a gate insulating film above said substrate to cover said gate electrode; a semiconductor layer on said gate insulating film and above said gate electrode; a first electrode above said semiconductor layer; a second electrode in a same layer as said first electrode; a first power supply line electrically connected to said second electrode and in a same layer as said second electrode; a first interlayer insulating film above said gate insulating film to cover said first electrode and said second electrode; a gate line above said first interlayer insulating film to cross said first power supply line, said first interlayer insulating film being in a layer different from said gate electrode; a second power supply line being in a same layer as said gate line and side-by-side with said gate line; and an auxiliary line in a same layer as said second power supply line and side-by-side with said second power supply line, and said gate electrode and said gate line are electrically connected via a first conductive portion passing through said gate insulating film and said first interlayer insulating film, said first power supply line and said second power supply line are electrically connected via a second conductive portion passing through said first interlayer insulating film, and said auxiliary line is electrically connected to said cathode electrode.