Patent ID: 7002181
Filing Date: 2006-02-21
Classification: G09G,H01L

Abstract:
1. A displayed device, comprising: an organic LED element which is part of a pixel in an array of a plurality of pixels; a switching thin film transistor electrically connected to at least one of said elements; a driver thin film transistor electrically connected to said at least one of said elements, and wherein said driver thin film transistor further comprises: a first insulating film having a first and a second surface; an active layer positioned on a portion of said first surface of said first insulating film; a second insulating film positioned on said active layer and on said first surface of said first insulating film; a first gate electrode having a first area positioned on said second surface of said first insulating film; a second gate electrode positioned on said second insulating film, said second gate electrode having a second area less than or greater than said first area of said first gate electrode; a first conductor connected to said first gate electrode for selectively applying a first voltage to said first gate electrode and operate said transistor in conjunction with or independent of said second gate electrode; and a second conductor connected to said second gate electrode for applying a second voltage to said second gate electrode and operate said transistor in conjunction with or independent of said first gate electrode.