Patent ID: 7129917
Filing Date: 2006-10-31
Classification: G09G,H01L

Abstract:
1. A driving method of a light-emitting device comprising: at least one frame period including at least one line period, the line period comprising: selecting a gate signal line connected to switching TFTs by inputting a selection signal from a gate signal line driving circuit, inputting a video signal to each of source signal lines from a source signal line driving circuit, and inputting the video signal inputted to each of the source signal lines to a gate electrode of each of current controlling TFTs through each of the switching TFTs, wherein an emission brightness of each of EL elements is controlled by the video signal inputted to the gate electrode of each of the current controlling TFTs, and wherein a drain current of each of the current controlling TFTs when the emission brightness of the EL element becomes maximum is Id, a mobility is μ, a gate capacitance per unit area is C