iPhone X Iphone X Question

so on break had pretty interesting conversation retired uncle used work apple during 80s , 90's. worked on lcd's , outsourcing lcd's various japanese manufactures want call candy coated imacs (these guys:
https://tinyurl.com/yaqdr64h) may or may not remember.

anyways today apple different company , uncle although retired fascinated lcds, leds , oleds has more or less spent greater portion of life working technology. explained me oleds new , breakthrough in able create blue lights, or blue led had struggled manufacture in prior years. , went on further explain how blacks great in oleds because off. , when @ aps netflix you'll see large amount of blacks within applications background little no leakage (like it's black).

had overlooked several days/weeks , never cared notice that. because know have alot of people complaining black borders on various videos, aps etc. yea blacks great, , it's impressive how black are, lol.

when making phone call background (during actual call) options or dialpad appears have tone of black simulate leakage. thinking needs updated/refreshed black, or else going on here?

guess i'm paying alot of attention various colors screen displays, , 1 time black shows on screen , i'm hmmm... doesn't seem right.

 

not true black in screens shades of dark dark gray guess.

 

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