Patent ID: 8274207

Claim:
An Electro Luminescence (EL) display panel comprising: an EL unit; and a thin film semiconductor unit 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 unit includes: a substrate; a gate electrode formed above said substrate; a gate insulating film formed above said substrate to cover said gate electrode; a semiconductor layer formed on said gate insulating film and above said gate electrode; a first electrode formed above said semiconductor layer; a second electrode formed in a same layer as said first electrode; an interlayer insulating film formed (i) above said gate insulating film to cover said first electrode and said second electrode, and (ii) in a layer different from a layer in which said gate electrode is formed; a gate line formed above said interlayer insulating film; a power supply line formed above said interlayer insulating film on which said gate line is formed, in a same layer as said gate line, and side-by-side with said gate line; and an auxiliary line formed above said interlayer insulating film, in a same layer as said gate line and said power supply line, and side-by-side with said gate line and said 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 interlayer insulating film, one of said first electrode and said second electrode is electrically connected to said power supply line via a second conductive portion passing through said interlayer insulating film, and said auxiliary line is electrically connected to said cathode electrode.