Patent ID: 8253179

Claim:
A semiconductor device comprising: a pixel, the pixel comprising: a first wiring, a second wiring and a metal layer over an insulating surface; a first insulating layer covering the first wiring, the second wiring and the metal layer; a second insulating layer covering the first insulating layer, a first electrode over the second insulating layer, wherein the first electrode is in contact with the second wiring through the first insulating layer and the second insulating layer; a second electrode formed over the second insulating layer; and a third insulating layer over the first electrode, the first insulating layer, the first wiring, the second wiring, the metal layer and the second insulating layer, wherein the first wiring, the second wiring and the metal layer contain a same material, wherein the first electrode is provided between the metal layer and the first wiring, wherein the metal layer is provided between the first electrode and the second electrode, and wherein the metal layer is electrically insulated from other wirings.