Display device, picture signal processing method, and program

摘要

There is provided a display device including a display unit having pixels, each of which includes a luminescence element that individually becomes luminous depending on a current amount and a pixel circuit for controlling a current applied to the luminescence element according to a voltage signal, where the pixels are arranged in a matrix pattern. The display device includes an average luminance calculator (200) for calculating average luminance for a predetermined period of the input picture signal, and also includes a luminous time setter (202) for setting an effective duty depending on the calculated average luminance by the average luminance calculator (200), the effective duty regulating for each one frame a luminous time for which the luminescence element is luminous. The luminous time setter (202) sets the effective duty such that a luminescence amount regulated by a preset reference duty and possible maximum luminance of a picture signal.

主权项

1. A display method including:
supplying a selection signal for selecting pixels to be luminous in a predetermined scanning cycle, each of the pixels including a luminescence element that individually becomes luminous depending on a current amount and a pixel circuit for controlling a current applied to the luminescence element according to a voltage signal; supplying to the pixels the voltage signal according to an input picture signal, the pixels, the scan lines, and the data lines arranged in a matrix pattern; multiplying primary colour signals of the picture signal respectively by adjustment values for the respective primary colour signals based on a voltage-current characteristic; calculating average luminance for a first area, based on the picture signal multiplied by the adjustment values; calculating average luminance for a second area, based on the picture signal multiplied by the adjustment values, the second area being smaller than the first area; selecting, as an average luminance, a larger value out of an average luminance calculated for the first area and an average luminance calculated for the second area; and setting an effective duty according to the average luminance.