| 摘要 |
The invention provides a display device that achieves optimization of an RGB signal without increasing power consumption required for displaying a test image. A display device of an embodiment of the invention has a display panel displaying an image corresponding to an RGB signal, a signal processing circuit portion including a plurality of signal processing circuits optimizing the RGB signal, an ACL circuit controlling the RGB signal so that the display panel emits light with predetermined electric power or less, and first and second test circuits respectively supplying first and second test image signals corresponding to first and second test images for the optimization to the display panel. The signal processing circuit portion further has a display area limitation circuit displaying the first and second test images only on a limited part as a display region of the display panel so that the whole of the display panel emits light with predetermined electric power or less when the first and second test image signals are supplied.
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