| abstract |
The display device includes: an electro-optical transfer function transforming part, which receives an image signal with a first brightness range, performs EOTF transformation on the image signal to obtain a first brightness value; Dynamic range signal, the maximum value of the second brightness range is smaller than the maximum value of the first brightness range, the brightness transforming part converts the first brightness value into a second brightness value within the second brightness range, and the maximum value of the second brightness range is greater than the standard The maximum value of the brightness of the dynamic range SDR signal, the maximum brightness value of the SDR signal is 100nit; and the display, based on the second brightness value to display a pseudo high dynamic range signal with a second brightness range, the maximum value of the second brightness range is the display The maximum possible display peak luminance DPL that can be displayed is greater than the maximum luminance value of the SDR signal, and the conversion from the first luminance value to the second luminance value is performed based on the content luminance information of the video signal. |