| 摘要 |
A monitor line electrically connectable with sources of drive transistors and positive electrodes of electro-optical elements is provided. A drive method includes a step of detecting the characteristics of a drive transistor, a step of detecting the characteristics of an electro-optical element, a step of storing characteristics data obtained on the basis of a result of the detection of the characteristics, as correction data for correcting a video signal, and a step of correcting the video signal on the basis of the correction data. Here, the length of a selection period is set to be equal for a monitored row and an unmonitored row. In addition, a potential given to the monitor line for the detection of the characteristics of the drive transistors and a potential given to the monitor line for the detection of the characteristics of the electro-optical elements are made different. |
| 主权项 |
1. A drive method for a display device having a pixel matrix of n rows and m columns constituted by n×m (where n and m are integers greater than or equal to 2) pixel circuits, each including an electro-optical element whose brightness is controlled with current and a drive transistor for controlling a current to be supplied to the electro-optical element, the drive method comprising:
a drive transistor characteristics detecting step of detecting characteristics of the drive transistor; a correction data storing step of causing a correction data storage unit prepared in advance to store, as correction data for correcting a video signal, characteristics data obtained on the basis of a detection result in the drive transistor characteristics detecting step; and a video signal correcting step of correcting the video signal on the basis of the correction data stored in the correction data storage unit, and generating a data signal to be supplied to the n×m pixel circuits, wherein the display device has, for each column in the pixel matrix, a monitor line electrically connectable with sources of the drive transistors and positive electrodes of the electro-optical elements, wherein processing of the drive transistor characteristics detecting step is performed for only one row in the pixel matrix per period of one frame, wherein, when a row for which the processing of the drive transistor characteristics detecting step is performed within each frame period is defined as a monitored row and a row other than the monitored row is defined as an unmonitored row, a period of one frame for the monitored row includes a drive transistor characteristics detection period during which the processing of the drive transistor characteristics detecting step is performed, and a light emission period during which the electro-optical elements are enabled to emit light, wherein, for the monitored row, the monitor line is electrically connected to the source of the drive transistor and the positive electrode of the electro-optical element throughout the drive transistor characteristics detection period and the light emission period, and wherein a potential given to the monitor line during the drive transistor characteristics detection period and a potential given to the monitor line during the light emission period are made different so that a current flows through only the drive transistor out of the drive transistor and the electro-optical element during the drive transistor characteristics detection period and so that a current flows through only the electro-optical element out of the drive transistor and the electro-optical element during the light emission period. |
