Patent ID: 8830149
Filing Date: 2014-09-09
Classification: G09G

Abstract:
1. A display device comprising: a horizontal scanning section configured to supply signal potentials to signal lines, the signal potentials including video signal potentials; pixel circuits arranged in rows and columns, a plurality of the pixel circuits being grouped into groups of k rows, k>2, respective ones of the pixel circuits including a storage capacitor, a first sampling transistor and a second sampling transistor that are cascaded and together control writing of the signal potentials from one of the signal lines to the storage capacitor, a driving transistor that generates a driving current based on a voltage held in the storage capacitor, and an electrooptic element connected to an output terminal of the driving transistor; a vertical scanning section configured to supply vertical scanning pulses for vertical scanning of the pixels circuits to row scanning lines that include writing scanning lines and power supply scanning lines, wherein each of the writing scanning lines corresponds to one of the groups and is connected in common to a gate electrode of the first sampling transistor of each of the pixel circuits of the corresponding group, each power supply scanning line corresponds to one of the groups and controls supply of power to the driving transistor of each of the pixel circuits of one or more rows of the respective corresponding group, for each of the groups: a gate electrode of the second sampling transistor of each of the pixel circuits in one of the k rows of the respective group is connected to one of the power supply scanning lines that corresponds to a different one of the groups than the respective group and a gate electrode of the second sampling transistor of each of the pixel circuits in one of the other k rows of the respective group is connected to one of the writing scanning lines that corresponds to another different one of the groups than the different one of the groups and the respective group, and the vertical scanning section supplies the vertical scanning pulses to the row scanning lines such that a threshold correction operation is performed in each of the pixel circuits, and, for each of the pixel circuits, a delay between a last threshold correction operation for the respective pixel circuit in a given period and a video signal writing operation for the respective pixel circuit in the given period is the same in each of the pixel circuits.