DISPLAY DEVICE AND METHOD FOR DRIVING SAME

摘要

Provided is a driving method whereby it is possible to simultaneously compensate for both degradation of a drive transistor and degradation of a light-emitting element without causing special light emission at the time of detecting characteristics in a display device. In a display device which includes a pixel circuit including an electro-optic element and a drive transistor, a driving method includes: a first characteristic detection step for detecting a characteristic of the drive transistor; a second characteristic detection step for detecting a characteristic of the electro-optic element; a correction data storage step for storing characteristic data obtained based on detection results in the first and second characteristic detection steps as correction data; and a video signal correction step for correcting the video signal based on the correction data. The second characteristic detection step is performed in a light emission period.

主权项

1. A method for driving a display device having an n-row×m-column (n and m are integers not smaller than 2) pixel matrix including n×m pixel circuits each including an electro-optic element whose luminance is controlled by a current and a drive transistor configured to control a current to be supplied to the electro-optic element, the method comprising:
a first characteristic detection step of detecting a characteristic of the drive transistor; a second characteristic detection step of detecting a characteristic of the electro-optic element; a correction data storage step of storing, into a previously prepared correction data storage portion, characteristic data obtained based on a detection result in the first characteristic detection step and a detection result in the second characteristic detection step as correction data for correcting a video signal; and a video signal correction step of correcting the video signal based on the correction data stored in the correction data storage portion, to generate a data signal to be supplied to the n×m pixel circuits, wherein one frame period includes a selection period in which light emission of the electro-optic element is prepared and a light emission period in which light emission of the electro-optic element is performed, pieces of processing of one or both of the first characteristic detection step and the second characteristic detection step are performed only on one row of the pixel matrix in each one frame period, and the processing of the second characteristic detection step is performed in the light emission period.