| 摘要 |
A pixel circuit 10 includes four TFTs 11 to 14, a capacitor 15, and an organic EL element 16. Between a node A where the TFT 11 and the capacitor 15 are connected and a power supply line VPk, the TFT 14 is provided in place of a capacitor. The gate terminal of the TFT 14 is connected to a control line Ek. The TFT 14 is in an on state in a light emission period of the organic EL element 16. The power supply line VPk and control lines Ek and AZk are connected to the pixel circuits 10 in a plurality of rows. A display device simultaneously performs initialization to the pixel circuits 10 in the plurality of rows, simultaneously performs threshold detection to the pixel circuits 10 in the plurality of rows, sequentially writes data to the pixel circuits 10 row by row, and makes organic EL elements 16 included in the pixel circuits 10 in the plurality of rows emit light in the same period. |
| 主权项 |
1. A current drive type display device, comprising:
a plurality of pixel circuits each including a light emitting element and disposed in a row direction and a column direction; a plurality of scanning signal lines each connected to the pixel circuits in the same row; a plurality of data signal lines each connected to the pixel circuits in the same column; one or more control lines each connected to the pixel circuits in a plurality of rows; one or more power supply lines each connected to the pixel circuits in the plurality of rows; a drive circuit driving the scanning signal lines, the data signal lines, and the control line(s); and a power supply circuit selectively applying a plurality of potentials to the power supply line(s), wherein the drive circuit and the power supply circuit simultaneously perform initialization to the pixel circuits in the plurality of rows, simultaneously perform threshold detection to the pixel circuits in the plurality of rows, sequentially write data to the pixel circuits row by row, and perform a control to make the light emitting elements included in the pixel circuits in the plurality of rows emit light in the same period, and each of the pixel circuits further includes: a drive transistor having one conduction terminal connected to the power supply line, and the other conduction terminal connected to one end of the light emitting element; a capacitor having one end connected to a control terminal of the drive transistor; a write control transistor provided between the other end of the capacitor and the data signal line, and having a control terminal connected to the scanning signal line; a threshold detection transistor provided between the control terminal and the conduction terminal on the light emitting element side of the drive transistor; and a power supply connection transistor provided between the other end of the capacitor and the power supply line or another power supply line having a predetermined potential, and having a control terminal connected to the control line. |
