Patent ID: 7256421
Filing Date: 2007-08-14
Classification: G02F,H01L,H05B

Abstract:
1. A display device comprising: a first semiconductor and a second semiconductor on an insulating surface; a gate insulating film over the first semiconductor; a first metal layer over the gate insulating film; a passivation film over the first metal layer; a second metal layer over the passivation film; a flattening film over the second metal layer; a barrier film over the flattening film; a third metal layer over the barrier film; the gate insulating film over the second semiconductor; a fourth metal layer over the gate insulating film; the passivation film over the fourth metal layer; a fifth metal layer over the passivation film; the flattening film over the fifth metal layer; a sixth metal layer over the barrier film; wherein a first opening formed in the flattening film is covered by the barrier film; wherein a second opening is formed inside side faces of the first opening, the second opening being formed in a lamination having the gate insulating film, the passivation film, and the barrier film; wherein the third metal layer is connected to the first semiconductor via the first opening and the second opening; wherein a first capacitor element comprises the second semiconductor, the gate insulating film, and the metal layer; and wherein a second capacitor element comprises the fourth metal layer, the passivation film, and the fifth metal layer.