Every (compliant) screen will produce that range, when given numbers between the minimum and maximum. It's nowhere near every color we can see (the dark gray area), but it is a decent manufacturing target and it covers a very practical area of our vision.
Screens could just produce their maximum range all the time... but then you'd get screwed up colors, with every display being different than the others (some redder, some greener, etc.). Hence standard color ranges, like sRGB, so bananas used for color scale always look the same shade of yellow. That triangle looks the same on my screen as it does on yours, assuming the manufacturer cared at all about consistency. (remember the stupidly red OLEDs when they were new? they looked awful, humans looked like oompah loompahs)
So screens are capable of more than they normally display, sometimes by a pretty large margin. Somehow you have to tell the screen to go beyond its normal range, to show yellower yellows for super-bananas - that's HDR.
Every (compliant) screen will produce that range, when given numbers between the minimum and maximum. It's nowhere near every color we can see (the dark gray area), but it is a decent manufacturing target and it covers a very practical area of our vision.
Screens could just produce their maximum range all the time... but then you'd get screwed up colors, with every display being different than the others (some redder, some greener, etc.). Hence standard color ranges, like sRGB, so bananas used for color scale always look the same shade of yellow. That triangle looks the same on my screen as it does on yours, assuming the manufacturer cared at all about consistency. (remember the stupidly red OLEDs when they were new? they looked awful, humans looked like oompah loompahs)
So screens are capable of more than they normally display, sometimes by a pretty large margin. Somehow you have to tell the screen to go beyond its normal range, to show yellower yellows for super-bananas - that's HDR.