| 摘要 |
It is an object of the present invention to provide an apparatus and method for evaluating an organic EL display, with which there is a simple drive circuit used for testing an organic EL display 10, evaluation of high reliability can be achieved, and an evaluation of the organic EL display 10 itself is performed prior to the installation of finished product drive circuits to the organic EL display 10, which makes it possible to suppress the decrease in yield caused by dealing with defective products due to the evaluation results. It was noticed that if the drive (testing) of a pixel 11 is performed during the discharge of the previous pixel 11 after the supply of drive current to that previous pixel 11, and if the difference between the drive current and discharge current values of the organic EL pixel 14 of the pixel 11 is under a specific level, then it is possible to decide that the pixels constituted by the various organic EL elements are operating normally, and the present invention is characterized in that pixel defects are detected by detecting the difference between drive current and discharge current values for every pixel 11 constituted by an organic EL element 1.
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