Patent ID: 9728130
Date: 2017-08-08
CPC Classifications: G09G,H01L,H05K

Claim:
1. An EL display apparatus comprising: a display screen including pixels arranged in a matrix, each of the pixels including an EL device and a pixel circuit; a source driver circuit configured to output a video signal applied to each of the pixels; a source signal line through which the video signal output from the source driver circuit is transmitted; and a gate driver circuit which includes a first gate driver circuit, a second gate driver circuit, a first gate signal line through which a first selection voltage or a first non-selection voltage output from the first gate driver circuit is transmitted, and a second gate signal line through which a second selection voltage or a second non-selection voltage output from the second gate driver circuit is transmitted, wherein: the pixel circuit of each of the pixels includes a driving transistor configured to supply a luminescence-causing current to the EL device, a first switching transistor, and a second switching transistor, the first switching transistor is disposed on a path through which the luminescence-causing current flows, the second switching transistor is configured to apply the video signal, which is output from the source driver circuit, to the driving transistor, a gate terminal of the first switching transistor is connected to the first gate signal line, a gate terminal of the second switching transistor is connected to the second gate signal line, the first switching transistor and the second switching transistor are independently on/off controlled by the first gate driver circuit and the second gate driver circuit, the source driver circuit is provided as a semiconductor chip and is attached to the EL display apparatus, an output terminal of the source driver circuit is connected to the source signal line, and the gate driver circuit receives a control signal that is level-shifted by the source driver circuit.