Patent ID: 7592991

Claim:
A method of driving a light emitting device, said light emitting device comprising: a switching transistor provided in a pixel; a transistor for driving provided in said pixel; a transistor for blanking provided in said pixel; an electric source; an electric current supplying line connected with said electric source and connected with one of source and drain regions of said transistor for blanking; a counter electrode contact connected with said electric source; a gate signal line drive circuit connected with said electric source and connected with a gate electrode of said switching transistor; and a source signal line drive circuit connected with said electric source and connected with one of source and drain regions of said switching transistor, wherein said switching transistor and said transistor for driving and said transistor for blanking and said electric source and said electric current supplying line and said counter electrode contact and said gate signal line drive circuit and said source signal line drive circuit are provided over a same substrate, said method comprising: outputting a picture signal on a source signal line, said picture signal having a level which turns on said transistor for driving; turning on said switching transistor to apply said picture signal to a gate electrode of said transistor for driving in an address period, said transistor for driving turned on by the application of said picture signal; flowing an electric current from said electric current supplying line to a counter electrode through an EL element to make said EL element emit a light in a sustain period; turning on said transistor for blanking to input a potential of said electric current supplying line to said gate electrode of said transistor for driving, said transistor for driving turned off by the input of the potential of said electric current supplying line to said gate electrode of said transistor for driving, said EL element made emit no light by the turning off of said transistor for driving in a subframe in which the address period is longer than the sustain period.