Display apparatus

摘要

A pixel circuit has a first capacitor having a first terminal connected with a gate of a driving transistor; a second capacitor connected between a second terminal of the first capacitor and a source of the driving transistor; a first switch applying a reference voltage to a node at which the first capacitor and the second capacitor are connected; a second switch supplying an image signal voltage to the gate of the driving transistor; a third switch supplying an initialization voltage to a drain of the driving transistor and a fourth switch supplying current to the drain of the transistor for emitting light from the current light emitting device.

主权项

1. A display apparatus having a plurality of arrayed pixel circuits, each of the pixel circuits comprising:
a current light emitting device; a driving transistor supplying current to the current light emitting device; a first capacitor having a first terminal connected to a gate of the driving transistor; a second capacitor connected between a second terminal of the first capacitor and a source of the driving transistor; a first switch applying a reference voltage to a node at which the first capacitor and the second capacitor are connected; a second switch supplying an image signal voltage to the gate of the driving transistor; a third switch supplying an initialization voltage to a drain of the driving transistor; a fourth switch supplying current to the drain of the driving transistor for emitting light from the current light emitting device, and a fifth switch applying the reference voltage to the gate of the driving transistor, wherein each of the pixel circuits is driven to have: an initialization period for charging the second capacitor to a predetermined voltage; a threshold detecting period for detecting a threshold voltage of the driving transistor following the initialization period; a writing period for writing the image signal voltage to the first capacitor following the threshold detecting period; and a luminescence period for causing the current light emitting device to emit light following the writing period.