Patent ID: 7932880

Claim:
An EL display apparatus comprising: gate signal lines and source signal lines which are arranged so as to intersect each other; a display screen having pixels arranged in a matrix; and a source driver circuit supplying video signal to said source signal lines, wherein: said pixel has an EL element, a driver transistor which supplies a light-emitting current to said EL element, a first condenser, a first switching transistor and a second switching transistor; said first condenser has a first terminal and a second terminal; said first switching transistor has a first terminal, a second terminal and a gate terminal; said second switching transistor has a first terminal, a second terminal and a gate terminal; said gate signal lines include a first gate signal line and a second gate signal line; said first terminal of said first switching transistor is connected to a gate terminal of said driver transistor; said second terminal of said first switching transistor is connected to a first electrode or wiring to which a first voltage is impressed; said first gate signal line is connected to said gate terminal of said first switching transistor; said first terminal of said first condenser is connected to said gate terminal of said driver transistor; said second terminal of said first condenser is connected to a second electrode or wiring to which a second voltage is impressed; said first voltage is impressed to said gate terminal of said driver transistor by applying a turn-on-voltage to said first gate signal line, said first terminal of said second switching transistor is connected to said source signal line; said second gate signal line is connected to said gate terminal of said second switching transistor; said second switching transistor is turned on by applying a turn-on-voltage to said second gate signal line; a video signal applied to said source signal line is output from said second terminal of said second switching transistor and is supplied to said drive transistor; after the turn-on-voltage is applied to said first gate signal line and said first voltage is applied to said driver transistor, the turn-on-voltage is applied to said second gate signal line and said video signal is supplied to said driver transistor.